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LCD-DV Troubleshooting 42" Class Full HD 1080P LCD TV (42" diagonally) 42LE5500 42LE5500 LED Backlights 1080P Direct View LCD Training Published October 8 th , 2010

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Page 1: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

LCD

-DV

Trou

bles

hoot

ing

42"

Cla

ss F

ull H

D 1

080P

LCD

TV

(42"

dia

gona

lly)

42LE

5500

42LE

5500

LED

Bac

klig

hts

1080

PD

irec

t Vie

w L

CD

Trai

ning

Publ

ished

Oct

ober

8th

, 201

0

Page 2: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

2

OU

TLIN

EO

UTL

INE •

Switc

h M

ode

Pow

er S

uppl

y w

ith L

ED B

ackl

ight

Driv

er B

oard

Prel

imin

ary

Sect

ion:

Trou

bles

hoot

ing

Sect

ion:

Boa

rd O

pera

tion

Trou

bles

hoot

ing

of :

Con

tact

Info

rmat

ion,

Pre

limin

ary

Mat

ters

, Spe

cific

atio

ns,

LCD

Ove

rvie

w, G

ener

al T

roub

lesh

ootin

g S

teps

, S

igna

l Dis

tribu

tion,

Dis

asse

mbl

y In

stru

ctio

ns a

nd V

olta

ges

•M

ain

Boa

rd

•Sof

t Tou

ch K

eys

Dis

asse

mbl

y Se

ctio

n: R

emov

al o

f Circ

uit B

oard

s

•Ft

Con

trol

Boa

rd

•Spe

aker

s

Page 3: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

3

42LE

5500

LC

D D

irect

Vie

w D

ispl

ay

Sec

tion

1Th

is S

ectio

n w

ill c

over

Con

tact

Info

rmat

ion

and

rem

ind

the

Tech

nici

an o

f Im

port

ant

Safe

ty P

reca

utio

ns fo

r the

Cus

tom

ers

Safe

ty a

s w

ell a

s th

e Te

chni

cian

and

the

Equi

pmen

t.

Bas

ic T

roub

lesh

ootin

g Te

chni

ques

whi

ch c

an s

ave

time

and

mon

ey s

omet

imes

can

be

ove

rlook

ed. T

hese

tech

niqu

es w

ill a

lso

be p

rese

nted

.

This

Sec

tion

will

get

the

Tech

nici

an fa

mili

ar w

ith th

e D

isas

sem

bly,

Iden

tific

atio

n an

d La

yout

of t

he L

CD

Dis

play

Pan

el.

At t

he e

nd o

f thi

s Se

ctio

n th

e Te

chni

cian

sho

uld

be a

ble

to Id

entif

y th

e C

ircui

t Boa

rds

and

have

the

abili

ty a

nd k

now

ledg

e ne

cess

ary

to s

afel

y re

mov

e an

d re

plac

e an

y C

ircui

t Boa

rd o

r Ass

embl

y.

Ove

rvie

w of

Top

ics

to b

e D

iscus

sed

Ove

rvie

w of

Top

ics

to b

e D

iscus

sed

Page 4: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

4

IMPO

RTAN

T SA

FETY

NO

TIC

EIM

PORT

ANT

SAFE

TY N

OTI

CE

The

info

rmat

ion

in th

is tr

aini

ng m

anua

l is

inte

nded

for u

se b

y pe

rson

s po

sses

sing

an

adeq

uate

bac

kgro

und

in

elec

trica

l equ

ipm

ent,

elec

troni

c de

vice

s, a

nd m

echa

nica

l sys

tem

s. In

any

atte

mpt

to re

pair

a m

ajor

Pro

duct

, pe

rson

al in

jury

and

pro

perty

dam

age

can

resu

lt. T

he m

anuf

actu

rero

r sel

ler m

aint

ains

no

liabi

lity

for t

he

inte

rpre

tatio

n of

this

info

rmat

ion,

nor

can

it a

ssum

e an

y lia

bilit

y in

con

junc

tion

with

its

use.

Whe

n se

rvic

ing

this

pr

oduc

t, un

der n

o ci

rcum

stan

ces

shou

ld th

e or

igin

al d

esig

n be

mod

ified

or a

ltere

d w

ithou

t per

mis

sion

from

LG

E

lect

roni

cs. U

naut

horiz

ed m

odifi

catio

ns w

ill no

t onl

y vo

id th

e w

arra

nty,

but

may

lead

to p

rope

rty d

amag

e or

us

er in

jury

. If w

ires,

scr

ews,

clip

s, s

traps

, nut

s, o

r was

hers

use

d to

com

plet

e a

grou

nd p

ath

are

rem

oved

for

serv

ice,

they

mus

t be

retu

rned

to th

eir o

rigin

al p

ositi

ons

and

prop

erly

fast

ened

.

CAU

TIO

NC

AUTI

ON

To a

void

per

sona

l inj

ury,

dis

conn

ect t

he p

ower

bef

ore

serv

icin

g th

is p

rodu

ct. I

f ele

ctric

al p

ower

is re

quire

d fo

r di

agno

sis

or te

st p

urpo

ses,

dis

conn

ect t

he p

ower

imm

edia

tely

afte

r per

form

ing

the

nece

ssar

y ch

ecks

. Als

o be

aw

are

that

man

y ho

useh

old

prod

ucts

pre

sent

a w

eigh

t haz

ard.

At l

east

two

peop

le s

houl

d be

invo

lved

in th

e in

stal

latio

n or

ser

vici

ng o

f suc

h de

vice

s. F

ailu

re to

con

side

r the

wei

ght o

f an

prod

uct c

ould

resu

lt in

phy

sica

l in

jury

.

Prel

imin

ary

Mat

ters

(Th

e Fi

ne P

rint)

Prel

imin

ary

Mat

ters

(Th

e Fi

ne P

rint)

Page 5: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

5

Toda

y’s

soph

istic

ated

ele

ctro

nics

are

ele

ctro

stat

ic d

isch

arge

(ES

D) s

ensi

tive.

ES

D c

an w

eake

n or

dam

age

the

elec

troni

cs in

a m

anne

r tha

t ren

ders

them

inop

erat

ive

or re

duce

s th

e tim

e un

til th

eir n

ext f

ailu

re.

Con

nect

an

ES

D w

rist s

trap

to a

gro

und

conn

ectio

n po

int o

r unp

aint

ed m

etal

in th

e pr

oduc

t. A

ltern

ativ

ely,

yo

u ca

n to

uch

your

fing

er re

peat

edly

to a

gro

und

conn

ectio

n po

int o

r unp

aint

ed m

etal

in th

e pr

oduc

t. B

efor

e re

mov

ing

a re

plac

emen

t par

t fro

m it

s pa

ckag

e, to

uch

the

anti-

stat

ic b

ag to

a g

roun

d co

nnec

tion

poin

t or

unpa

inte

d m

etal

in th

e pr

oduc

t. H

andl

e th

e el

ectro

nic

cont

rol a

ssem

bly

by it

s ed

ges

only

. Whe

n re

pack

agin

g a

faile

d el

ectro

nic

cont

rol a

ssem

bly

in a

n an

ti-st

atic

bag

, obs

erve

thes

e sa

me

prec

autio

ns.

Regu

lato

ry In

form

atio

nRe

gula

tory

Info

rmat

ion

This

equ

ipm

ent h

as b

een

test

ed a

nd fo

und

to c

ompl

y w

ith th

e lim

its fo

r a C

lass

B d

igita

l dev

ice,

pur

suan

t to

Par

t 15

of th

e FC

C R

ules

. The

se li

mits

are

des

igne

d to

pro

vide

reas

onab

le p

rote

ctio

n ag

ains

t har

mfu

l in

terfe

renc

e w

hen

the

equi

pmen

t is

oper

ated

in a

resi

dent

ial i

nsta

llatio

n. T

his

equi

pmen

t gen

erat

es, u

ses,

an

d ca

n ra

diat

e ra

dio

frequ

ency

ene

rgy,

and

, if n

ot in

stal

led

and

used

in a

ccor

danc

e w

ith th

e in

stru

ctio

n m

anua

l, m

ay c

ause

har

mfu

l int

erfe

renc

e to

radi

o co

mm

unic

atio

ns. H

owev

er, t

here

is n

o gu

aran

tee

that

in

terfe

renc

e w

ill no

t occ

ur in

a p

artic

ular

inst

alla

tion.

If th

is e

quip

men

t doe

s ca

use

harm

ful i

nter

fere

nce

to

radi

o or

tele

visi

on re

cept

ion,

whi

ch c

an b

e de

term

ined

by

turn

ing

the

equi

pmen

t off

and

on, t

he u

ser i

s en

cour

aged

to tr

y to

cor

rect

the

inte

rfere

nce

by o

ne o

r mor

e of

the

follo

win

g m

easu

res:

Reo

rient

or r

eloc

ate

the

rece

ivin

g an

tenn

a; In

crea

se th

e se

para

tion

betw

een

the

equi

pmen

t and

the

rece

iver

; Con

nect

the

equi

pmen

t to

an o

utle

t on

a di

ffere

nt c

ircui

t tha

n th

at to

whi

chth

e re

ceiv

er is

con

nect

ed; o

r con

sult

the

deal

er o

r an

expe

rienc

ed ra

dio/

TV te

chni

cian

for h

elp.

ESD

Not

ice

ESD

Not

ice

(Ele

ctro

stat

ic S

tatic

Dis

char

ge)

(Ele

ctro

stat

ic S

tatic

Dis

char

ge)

Page 6: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

6

Cus

tom

er S

ervi

ce (a

nd P

art S

ales

) (8

00) 2

43-0

000

Tech

nica

l Sup

port

(and

Par

t Sal

es)

(800

) 847

-759

7

USA

Web

site

(GSF

S)ht

tp://

gsfs

-am

eric

a.lg

e.co

m

Cus

tom

er S

ervi

ce W

ebsi

teht

tp://

ww

w.u

s.lg

serv

ice.

com

Kno

wle

dgeb

ase

Web

site

http

://lg

tech

assi

st.c

om

LG W

eb T

rain

ing

http

s://l

ge.w

ebex

.com

LG C

S A

cade

my

http

://ln

.lge.

com

/ilea

rn

Publ

ishe

d Se

ptem

ber 2

010

by L

G T

echn

ical

Sup

port

and

Tra

inin

gLG

Ele

ctro

nics

Ala

bam

a, In

c.

201

Jam

es R

ecor

d R

oad,

Hun

tsvi

lle, A

L, 3

5813

.

32LG

40, 3

2LH

30, 3

7LH

55, 4

2LG

60, 4

2LG

70, 4

2LH

20, 4

2LH

40, 4

2LH

50, 4

2LH

90, 4

2SL8

0,

47LG

90, 4

7LH

85, 4

2LE5

500,

47L

E850

042

PG20

, 42P

J350

, 42P

Q20

, 42P

Q30

, 50P

G20

, 50P

J350

, 50P

K25

0, 5

0PK

750,

50P

S80,

50

PS60

, 60P

K75

0, 6

0PS1

1, 6

0PS6

0, 6

0PS8

0

LCD

-DV:

PLA

SMA

:

Als

o av

aila

ble

on th

e Pl

asm

a Pa

ge:

PDP

Pane

l Alig

nmen

t Han

dboo

k, S

chem

atic

s w

ith B

ookm

arks

Pl

asm

a C

ontr

ol B

oard

RO

M U

pdat

e (J

ig re

quire

d)

LG C

onta

ct In

form

atio

nLG

Con

tact

Info

rmat

ion

Pre

sent

atio

ns w

ith A

udio

/Vid

eo

and

Scr

een

Mar

ks

New

Tra

inin

g M

ater

ials

on

New

Tra

inin

g M

ater

ials

on

the

Lear

ning

Aca

dem

y si

teth

e Le

arni

ng A

cade

my

site

New

: 201

0 M

odel

s S

oftw

are

Dow

nloa

ds T

echn

ical

Ass

ista

nce

http

://13

6.16

6.4.

200

Page 7: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

7

Saf

ety

and

Han

dlin

g R

egul

atio

ns

1.A

ppro

xim

atel

y 20

min

ute

pre-

run

time

is re

quire

d be

fore

mak

ing

any

pict

ure

perfo

rman

ce

adju

stm

ents

from

the

Men

u.

2.R

efer

to th

e V

olta

ge/C

urre

nt s

ilk s

cree

ning

on

the

Sw

itch

Mod

e P

ower

Sup

ply.

3.C

-MO

S c

ircui

ts a

re s

ensi

tive

to s

tatic

ele

ctric

ity.

Use

cau

tion

whe

n de

alin

g w

ith th

ese

IC a

nd c

ircui

ts.

4.E

xerc

ise

care

whe

n m

akin

g vo

ltage

and

wav

efor

m c

heck

s to

pre

vent

cost

ly s

hort

circ

uits

fro

m d

amag

ing

the

unit.

5.

Be

caut

ious

of l

ost s

crew

s an

d ot

her m

etal

obj

ects

to p

reve

nt a

pos

sibl

e sh

ort i

n th

e ci

rcui

try.

1.C

heck

the

appe

aran

ce o

f the

Rep

lace

men

t Pan

el a

nd C

ircui

t Boa

rds

for b

oth

phys

ical

da

mag

e an

d pa

rt nu

mbe

r acc

urac

y.2.

Che

ck th

e m

odel

labe

l. V

erify

mod

el n

ames

and

boa

rd m

odel

mat

ches

.3.

Che

ck d

etai

ls o

f def

ectiv

e co

nditi

on a

nd h

isto

ry. E

xam

ple:

Osc

illato

r fai

lure

dea

d se

t, et

c…

Che

ckin

g P

oint

s to

be

Con

side

red

LCD

Dire

ct V

iew

Ove

rvie

wLC

D D

irect

Vie

w O

verv

iew

Page 8: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

8

Basic

Tro

uble

shoo

ting

Step

sBa

sic T

roub

lesh

ootin

g St

eps D

efin

e, L

ocal

ize,

Isol

ate

and

Cor

rect

•Def

ine

Look

at t

he s

ympt

om c

aref

ully

and

det

erm

ine

wha

t circ

uits

cou

ld b

e ca

usin

g th

e fa

ilure

. Use

you

r sen

ses

Sig

ht, S

mel

l, To

uch

and

Hea

ring.

Loo

k fo

r bur

ned

parts

and

ch

eck

for p

ossi

ble

over

heat

ed c

ompo

nent

s. C

apac

itors

will

som

etim

es le

ak d

iele

ctric

mat

eria

l an

d gi

ve o

ff a

dist

inct

odo

r. Fr

eque

ncy

of p

ower

sup

plie

s w

ill ch

ange

with

the

load

, or l

iste

n fo

r re

lay

clos

ing

etc.

Obs

erva

tion

of th

e fro

nt P

ower

LE

D m

ay g

ive

som

e cl

ues.

•Loc

aliz

eA

fter c

aref

ully

che

ckin

g th

e sy

mpt

om a

nd d

eter

min

ing

the

circ

uits

to b

e ch

ecke

d an

d af

ter g

ivin

g a

thor

ough

exa

min

atio

n us

ing

your

sen

ses

the

first

che

ck s

houl

d al

way

s be

the

DC

Sup

ply

Vol

tage

s to

thos

e ci

rcui

ts u

nder

test

. Alw

ays

conf

irm th

e su

pplie

s ar

e no

t onl

y th

e pr

oper

leve

l but

be

sure

they

are

noi

se fr

ee. I

f the

sup

plie

s ar

e m

issi

ng c

heck

th

e re

sist

ance

for p

ossi

ble

shor

t circ

uits

.

•Isol

ate

To fu

rther

isol

ate

the

failu

re, c

heck

for t

he p

rope

rwav

efor

ms

with

the

Osc

illosc

ope

to m

ake

a fin

al d

eter

min

atio

n of

the

failu

re. L

ook

for c

orre

ct A

mpl

itude

Pha

sing

an

d Ti

min

g of

the

sign

als

also

che

ck fo

r the

pro

per D

uty

Cyc

le o

f the

sig

nals

. Som

etim

es

“glit

ches

”or “

road

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Page 9: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

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Page 10: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

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Page 11: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

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20

10

LC

D T

V4

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55

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less

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Page 12: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

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Page 13: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

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Page 14: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

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Page 15: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

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Page 16: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

16

Logo

Fam

iliar

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Page 17: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

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20

10

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Page 18: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

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55

00

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Page 19: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

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55

00

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Page 20: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

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55

00

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Page 21: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

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e ve

rsio

n-c

ompa

rison

cur

rent

sof

twar

e ve

rsio

n an

dR

elea

sed

softw

are

vers

ion

Afte

r com

plet

ion

of th

e te

st, a

Pop

up

men

u is

di

spla

yed

with

pre

load

ed b

ack

grou

nd p

ictu

re.

Sel

ect N

O if

eve

ryth

ing

is O

K.

Add

ition

al T

V C

heck

s ca

n be

mad

e by

Scro

lling

dow

n.P

ictu

re, S

ound

and

Net

wor

k Te

st

If yo

u se

lect

Yes

;Se

rvic

e ca

ll nu

mbe

r, M

odel

nam

e,S

W v

ersi

on a

nd s

eria

l No.

is d

ispl

ayed

. N

ote:

Con

firm

the

“Suf

fix”o

f the

mod

el

num

ber.

If th

e M

ain

boar

d is

repl

aced

, the

Mod

el

and

Ser

ial n

umbe

r mus

t be

rein

serte

d in

to m

emor

y. S

ee M

odel

Num

ber D

/L.

Page 22: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

22

1) C

reat

e an

LG

_DTV

fold

er o

n th

e U

SB

Fla

sh D

rive

2) C

opy

new

sof

twar

e (x

xx.e

pk) t

o "L

G_D

TV"

fold

er. M

ake

sure

to h

ave

corre

ct s

oftw

are

file.

3) W

ith T

V tu

rned

on,

inse

rt U

SB

flas

h dr

ive.

4) Y

ou c

an s

ee th

e m

essa

ge

“TV

Sof

twar

e U

pgra

de”(

See

figu

re to

righ

t)5)

Cur

sor l

eft a

nd h

ighl

ight

"STA

RT"

But

ton

and

push

“Ent

er”b

utto

n us

ing

the

rem

ote

cont

rol.

6) Y

ou c

an s

ee th

e do

wnl

oad

prog

ress

Bar

.7)

Do

not u

nplu

g un

til u

nit h

as a

utom

atic

ally

re

star

ted.

8) W

hen

dow

nloa

d is

com

plet

ed, y

ou w

ill se

e “C

OM

PLE

TE”.

9) Y

our T

V w

ill be

rest

arte

d au

tom

atic

ally

.

USB

Aut

omat

ic S

oftw

are

Dow

nloa

d In

stru

ctio

nsU

SB A

utom

atic

Sof

twar

e D

ownl

oad

Inst

ruct

ions

Cur

rent

ly

Inst

alle

d Ve

rsio

n

Softw

are

Vers

ion

foun

d on

the

USB

Fla

sh

Driv

e

* CA

UTI

ON

: D

o no

t rem

ove

AC

pow

er o

r the

USB

Fla

sh D

rive.

D

o no

t tur

n of

f Pow

er, d

urin

g th

e up

grad

e pr

oces

s.

File

foun

d on

the

USB

Fl

ash

Driv

e

Softw

are

File

s ar

e no

w a

vaila

ble

from

LGTe

chas

sist

.com

Page 23: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

23

Man

ual S

oftw

are

Dow

nloa

d:M

anua

l Sof

twar

e D

ownl

oad:

Pre

pare

the

Jum

p D

rive

as d

escr

ibed

in th

e “U

SB

Aut

omat

ic D

ownl

oad”

sect

ion

and

inse

rt it

into

eith

er o

f the

US

B p

orts

.B

ring

up th

e C

usto

mer

’s M

enu

and

scro

ll to

“OP

TIO

NS

”.P

ress

the

“FA

V”k

ey 7

tim

es to

brin

g up

the

Man

ual D

ownl

oad

Scr

een.

Exa

mpl

e of

file

s fo

und

On

the

Jum

p D

rive

Hig

hlig

ht th

e S

oftw

are

upda

te fi

le

and

pres

s “S

ELEC

T”to

beg

in th

e do

wnl

oad

proc

ess.

WA

RN

ING

:U

se e

xtre

me

Cau

tion

whe

n us

ing

the

Man

ual “

Forc

ed”

Dow

nloa

d M

enu.

Any

fil

e ca

n be

do

wnl

oade

d w

hen

sele

cted

and

may

ca

use

the

Mai

n bo

ard

to b

ecom

e in

oper

ativ

e if

the

inco

rrec

t file

w

as s

elec

ted.

Page 24: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

24

Serv

ice

Men

u: D

ownl

oadi

ng E

DID

Dat

a Pg

1 o

f 2Se

rvic

e M

enu:

Dow

nloa

ding

ED

ID D

ata

Pg 1

of 2

1) P

ress

“A

DJ”

key.

2) S

elec

t men

u,

Eith

er “

PCM

EDID

D/L

”or

AC

3 ED

ID D

/L

Page 25: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

25

Serv

ice

Men

u: D

ownl

oadi

ng E

DID

Dat

a Pg

2 o

f 2Se

rvic

e M

enu:

Dow

nloa

ding

ED

ID D

ata

Pg 2

of 2

3) H

ighl

ight

“St

art”

then

Pre

ss “

Sele

ct”

key.

4) W

hen

Writ

ing

appe

ars

Dow

nloa

ding

in p

rogr

ess

5) D

ownl

oadi

ng C

ompl

ete

Whe

n PC

MED

ID D

/L w

as s

elec

ted

Whe

n A

C3

EDID

D/L

was

sel

ecte

d

Not

e: W

hen

PCM

is d

ownl

oade

d, A

C3

will

be

N/G

and

whe

n A

C3

is d

ownl

oade

d PC

Mw

ill b

e N

/G.

This

mea

ns th

at w

hen

PCM

is O

K, P

CM

audi

o is

prio

rity

and

whe

n A

C3

is O

K, A

C3

audi

o is

pr

iorit

y.

Page 26: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Wei

ght w

/o S

tand

36.

8 lb

sW

eigh

t with

Sta

nd 4

3 lb

s

42LE

5500

Pro

duct

Dim

ensi

ons

42LE

5500

Pro

duct

Dim

ensi

ons

7.7/

8"20

0mm

24.1

3/16

"62

9.92

mm

40"

1016

mm

Rem

ove

4 sc

rew

s to

re

mov

e st

and

for

wal

l mou

nt

20.7

/16"

510m

m

27.3

/16"

690.

88m

m

1.3/

16"

30.4

8mm

10.5

/8"

269.

24m

m

7.7/

8"20

0mm5.

9/16

"14

2mm

11.5

/16"

288m

m

2.3/

8" (6

0.96

mm

)

Cen

ter

Ther

e m

ust b

e at

leas

t 4 in

ches

of C

lear

ance

on

all s

ides

26

17.5

/16"

440m

m

12.3

/8"

314.

96m

mMod

el N

o.S

eria

l No.

Labe

l

Wat

tage

Loca

l Dim

min

g TB

DFu

ll W

hite

TB

DSt

and

By

0.1W

Oct

ober

201

0

42LE

5500

L

CD

-DV

Page 27: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

27

DIS

ASSE

MBL

Y SE

CTI

ON

DIS

ASSE

MBL

Y SE

CTI

ON

Dis

asse

mbl

y:Th

is s

ectio

n of

the

man

ual w

ill di

scus

s D

isas

sem

bly,

Lay

out

(Circ

uit B

oard

Iden

tific

atio

n) o

f the

42L

E55

00 L

CD

Dire

ct V

iew

Tel

evis

ion.

Upo

n co

mpl

etio

n of

this

sec

tion

the

Tech

nici

an w

ill ha

ve a

bet

ter

unde

rsta

ndin

g of

the

disa

ssem

bly

proc

edur

es, t

he la

yout

of t

he p

rinte

d ci

rcui

t boa

rds

and

be a

ble

to id

entif

y ea

ch b

oard

.

Page 28: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

28

Rem

ove

the

28 s

crew

s in

dica

ted.

Pay

atte

ntio

n to

the

size

and

type

of s

crew

as th

ere

are

man

y di

ffere

nt ty

pes.

Putti

ng in

an

impr

oper

scr

ew w

hen

reas

sem

blin

g m

ay C

ause

dam

age.

The

Stan

d ha

s to

be

rem

oved

bef

ore

rem

ovin

g th

e ba

ck.

Rem

ovin

g th

e Ba

ck C

over

Re

mov

ing

the

Back

Cov

er

The

AC

Cor

dD

oes

Not

unp

lug

Rem

ove

plas

tic

cove

r.

The

Stan

d B

rack

et h

as a

pl

astic

cov

er “

Not

Sho

wn”

that

mus

t be

rem

oved

to

expo

se th

e sc

rew

s.

Page 29: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

29

Circ

uit B

oard

Lay

out

Circ

uit B

oard

Lay

out

Mai

n B

oard

Pow

er S

uppl

y(S

MPS

)

Invi

sibl

eSp

eake

r Rig

htIR

/LED

B

oard

Soft

Touc

hK

eybo

ard

LVD

S C

able

s

Invi

sibl

eSp

eake

r Lef

tLG

Log

o B

oard

War

ning

: The

Fra

me

has

very

sha

rp e

dges

To L

EDs

Pane

l Con

nect

ion

Poin

ts

Clip

s ho

ld th

e fr

ont g

lass

in p

lace

, use

cau

tion.

Add

scr

ews

whi

le s

ervi

cing

.

Page 30: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

MA

INB

OA

RD

POW

ERSU

PPLY

Spea

ker (

Fron

t Lef

t)

AC

In

IRLE

D

42LE

5500

Con

nect

or Id

entif

icat

ion

Dia

gram

42LE

5500

Con

nect

or Id

entif

icat

ion

Dia

gram

TFT

PAN

EL 30O

ctob

er 2

010

42LE

5500

L

CD

-DV

Spea

ker (

Fron

t Rig

ht)

Soft

Touc

h K

eys

p/n:

EB

U60

9046

03p/

n: E

BR

6610

1301

p/n:

EB

U60

9046

02

p/n:

EB

R64

9662

01

p/n:

EAJ

6087

1201

p/n:

EA

B609

6150

1p/

n: E

AB60

9615

01p/

n: E

AV6

0793

302

p/n:

EBR

6496

6801

p/n:

EA

Y608

0310

1p/

n: E

AY6

0803

201

n/c

n/c

SK10

1

P204

P750

1P7

500

P800

0

P820

0P8

800

J1J2

J3

To TFT

Pane

l

If th

e P

anel

is re

plac

ed, r

eset

the

UTT

Tim

e.

Ser

vice

Men

u, S

yste

m 1

Item

12

P205

P201

To L

ED

s

Whi

te P

lug

Blac

k Pl

ug

Page 31: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

31

Powe

r Sup

ply

Powe

r Sup

ply

Boar

d Re

mov

alBo

ard

Rem

oval

Dis

conn

ect

P201

, P20

4,

P205

and

AC

In

SK

101.

P201

Pres

s in

ge

ntly

on

the

two

tabs

to re

leas

e lo

ck

P201

SK10

1

Rem

ove

the

6 sc

rew

s in

dica

ted

by th

e ar

row

s.A

C In

SK10

1 fit

s ve

ry

snug

into

it’s

co

nnec

tor.

Pres

s in

on

the

two

tabs

to re

leas

e lo

ck

Boa

rd is

“Th

in”,

be

care

ful n

ot to

flex

.

p/n

EA

Y60

8031

01

P204

P205

Page 32: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

32

Rem

ovin

g th

e M

ain

Boar

dRe

mov

ing

the

Mai

n Bo

ard

Rem

ove

any

tape

hol

ding

do

wn

any

cabl

es.

Rem

ove

the

7 sc

rew

s in

dica

ted

by th

e ar

row

s.N

/C

Flip

the

lock

ing

tab

upw

ard,

pul

l the

LVD

S rib

bon

out.

NO

TE: A

lway

s ch

eck

on

top

and

behi

nd th

e La

rge

ICs.

And

look

for a

pie

ce

of C

hoco

late

(Hea

t Tra

nsfe

r Mat

eria

l).B

e su

re to

tran

sfer

to

new

Boa

rd if

pre

sent

.

Dis

conn

ect P

7500

, P7

501,

P80

00, P

8200

and

P8

800

P750

1P7

500

Dec

orat

ive

Met

al P

late

Rem

ove

deco

rativ

e pl

astic

and

rem

ove

the

boar

d.

P880

0P8

200

P800

0

Pres

s in

on

the

side

rele

ase

tabs

to re

mov

e.

N/C

Afte

r rem

ovin

g th

e M

ain,

ther

e ar

e ta

bs s

ticki

ng th

roug

h th

e M

ain

boar

d ho

ldin

g th

e M

etal

pl

ate

in p

lace

.

p/n

EB

U60

9046

03

Page 33: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

33

Rem

ovin

g Fr

ont I

R Bo

ard

Rem

ovin

g Fr

ont I

R Bo

ard

IR b

oard

/ In

telli

gent

Sen

sor

p/n

EB

R64

9662

01

Dis

conn

ect J

1, J

2 an

d J3

con

nect

ors.

J2

J3Tab

Tab

J1

Pres

s up

war

d on

the

two

tabs

at t

he to

p. T

ilt th

e bo

ard

dow

nwar

d.

Tab

Tab

Lift

stra

ight

up

To C

lear

the

Tabs

at t

he b

otto

m.

Page 34: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

34

TRO

UBL

ESH

OO

TIN

G S

ECTI

ON

TRO

UBL

ESH

OO

TIN

G S

ECTI

ON Tr

oubl

esho

otin

g:Th

is s

ectio

n of

the

man

ual w

ill d

iscu

ss tr

oubl

esho

otin

g.

Upo

n co

mpl

etio

n of

this

sec

tion

the

Tech

nici

an w

ill h

ave

a be

tter u

nder

stan

ding

of h

ow to

dia

gnos

is a

nd re

solv

e pr

oble

ms.

Page 35: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

35

POW

ER S

UPP

LY S

ECTI

ON

POW

ER S

UPP

LY S

ECTI

ON

This

sw

itch

mod

e po

wer

sup

ply

deve

lops

Sta

nd B

y 3.

5V

at a

ll tim

es w

hen

AC

is a

pplie

d.A

t pow

er o

n, it

dev

elop

s 12

V an

d 20

V fo

r the

Mai

n bo

ard.

It de

velo

ps 1

20V

for t

he L

ED B

ackl

ight

s.Th

is p

ower

sup

ply

draw

s le

ss th

an 1

wat

t dur

ing

stan

d by

m

ode.

The

fuse

F10

1 an

d F1

03 re

ads

7.6V

(fr

om h

ot g

roun

d) d

urin

g th

is ti

me.

Whe

n th

e co

ntro

ller c

hip

rece

ives

the

PW

R-O

N c

omm

and

3.36

V v

ia P

201

Pin

1, t

he p

rimar

y se

ctio

n in

crea

ses

its

curre

nt s

uppl

ying

abi

lity.

Bot

h P

rimar

y fu

ses

F101

and

F1

03 n

ow re

ad a

littl

e m

ore

than

395

V.

T102

del

iver

s A

C to

D20

6 w

hich

dev

elop

s th

e 12

0V fo

r th

e LE

D b

ackl

ight

s.

P201

Con

nect

or: (

To M

ain

Boa

rd)

12V

(11.

43V

) is

rout

ed o

ut P

201

pins

17,

19

and

21 a

nd

20V

(21.

27V

) is

rout

ed o

ut P

201

pins

2, 3

and

4.

P204

Con

nect

or: (

To P

anel

LED

s)12

0V is

rout

ed o

ut P

204

pins

1 a

nd 1

2.

P205

Con

nect

or: (

To P

anel

LED

s)12

0V is

rout

ed o

ut P

205

pins

1 a

nd 1

2.

Page 36: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

36

Powe

r Sup

ply

(SM

PS)

Boar

d La

yout

Powe

r Sup

ply

(SM

PS)

Boar

d La

yout

Hot

Gro

und

Shoc

k H

azar

d

F100

5A

/250

VF1

021A

/250

VA

C P

rote

ct

p/n

EA

Y60

8031

01

F101

3.15

A/2

50V

F103

1A/2

50V

STB

Y 7

.6V

Run

396

VFr

om H

ot G

nd

Page 37: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

42LE

5500

Pow

er S

uppl

y St

art U

p Se

quen

ce42

LE55

00 P

ower

Sup

ply

Star

t Up

Sequ

ence

37

Inve

rter O

nS

tarts

the

Inve

rters

Sta

nd B

y 3.

5V

Rem

ote

or P

ower

But

ton

Key

MA

IN

BO

AR

D

RL_

ON

Inv

On

Sta

nd B

y3.

5V R

eg

25

66

8

4

5

Prim

ary

side

fuse

s:S

tand

-By

7.6V

Run

396

V (H

ot G

nd)

3

12V

24V 12

V

At p

oint

TV

is in

S

tand

-By

stat

e.

Ene

rgy

Sta

r com

plia

nt.

0 .1

Wat

ts3

Oth

er R

egs

LCD

PA

NEL

To P

anel

Bac

klig

hts

120H

zM

anip

ulat

es B

ackl

ight

LE

Ds

Low

= B

right

RL_On

2

No

AC

D

et in

th

is

mod

el

Afte

r Mut

e R

elea

sed

LVD

S V

ideo

Ft IR

Key

120V

Mod

el 1

_Opt

1 P

anel

Con

trol

INV

_CTL

Mic

ropr

oces

sor I

C81

01

RL_

ON

And

Tru

-Mot

ion

LVD

S V

ideo

Q80

04

P201

T510

&R

ectif

ier

P20

5

Power On Pow

er

On

5

P204

120V

P800

0

Soft

Touc

h K

eyP

8200

Inverter On

P75

00R

eset

G

ener

ator

C81

08R

8184

1A

C In

3.5V

_ST

P-DIM

8

4

P75

01

Pane

lVC

C

12V

IC91

03

3.3V

, 16

V, -

5V,

26V

,

DC

toD

C7

5

7

Key

1 o

r IR

7

Vide

oPr

oces

sor

IC90

0

IC91

02H

VDD

7.8V

VC

C 3

.3V

, VD

D 1

6V,

VG

L -5

V, V

GH

26V

, H

VDD

7.8

V

IC93

021.

8V_L

/ D

imm

ing

7

SIN

MO

SI,

CLK

12 B

lock

s

99

9

Oct

ober

201

0

42

LE55

00

LC

D-D

V

POW

ER S

UPP

LY (S

MPS

)PO

WER

SU

PPLY

(SM

PS)

Brid

geR

elay

sT1

02D

206

6

512

V/2

4V

Reg

ulat

ors

On

Boa

rdIn

verte

r

8 9

6

Loca

l and

Glo

bal D

imm

ing

Loca

l and

Glo

bal D

imm

ing

5

P-D

IM1

(PW

M-D

IM)

Pul

se W

idth

Dim

min

gG

loba

l Dim

min

gM

anip

ulat

ed b

y:

Cus

t Men

u fo

r Bac

klig

htan

dPi

ctur

e C

onte

ntM

anip

ulat

e P-

DIM

Loca

l Dim

min

g (S

IN)

IC93

01D

imm

ing

IC

88

2218

2~4

See

Not

e 1:

IC88

01Au

dio

Amp

17 19 21

19~

1216

Not

e 1:

12V

TU

RN

S O

N:

IC80

00 5

V_U

SB

IC80

03 5

V_N

orm

alIC

8005

3.3

V_N

orm

alIC

8903

+3.

3V_M

EMC

IC89

02 +

1.26

V_M

EMC

ME

MC

=M

otio

n Es

timat

ed M

otio

n C

ompe

nsat

edFo

r Vid

eo P

roce

ssor

Rig

ht S

ide

Pane

lD

river

Boa

rd

Left

Sid

e Pa

nel

Driv

er B

oard

P-D

IM9

9

2

7

Glo

bar

Dim

min

g

V-S

YN

C

9

23

Page 38: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

0.38

V~3

.3V

PWM

-DIM

PWM

-DIM

0.09

V

PWM

-DIM

(PW

M D

imm

ing)

can

var

y ac

cord

ing

to

inco

min

g vi

deo

IRE

leve

l, O

SD

Bac

klig

ht s

ettin

g an

d In

telli

gent

Sen

sor (

room

ligh

t con

ditio

n).

Ran

ge 0

.37V

to 3

.3V

.

42LE

5500

Tel

evis

ion

Turn

On

Com

man

ds C

ircui

t Dra

win

g42

LE55

00 T

elev

isio

n Tu

rn O

n C

omm

ands

Circ

uit D

raw

ing

R80

1910

0

11.4

3V

Gnd

Gnd

Gnd

Gnd

3.36

V

ERR

OU

T

PWR

INV_

CTL

SMPS

P201

R25

11

MA

IN B

oard

P800

0

3.5V

Gnd

1 65 87 109 1211 14 15 1917 2118 2422

1 65 87 109 1211 14 15 1917 2118 2422

Gnd

L800

3

L800

2+1

2VC

8001

100

uF

R80

0010

K

10

Q80

05+3

.3V_

Nor

mal

INV_

CTL

S 2 6

D 7

Q80

04

L801

5

Pane

l_Vc

c (1

2V)

3.36

V

GQ

8003

Mod

el_O

pt_1

1.8V

+12V

R80

10 1

0K

C80

0010

0uF

+3.5

V_ST

RL_

ON

GP

IO 0

9

3.28

V

38

Q80

02

L800

0

+3.5

V_ST

INV_

On

PWR

-ON

IC81

01M

icro

RL_

ON

Pow

er D

et14

Res

et40

Key

125

Key

226

Pow

erO

n/O

ff 2_

220

R80

044.

7K

3.5V

3.5V

3.5V

Q80

010V

36

R80

60

10K

+3.3

V_N

orm

al

Res

et

12V

Gnd

1313

1616

0.02

V

2323

3.3V Gnd

Q80

00

R80

3210

K

R81

8722

R81

8447

KC

8108

0.1u

F

IC90

0B

CM

R10

41 0

R80

27 0

R81

7822

IR16

R81

3522

R81

0310

0

R80

0147

KR

8011

1.8

KTo

IC91

03D

C to

DC

C

onv

T-C

ON

+12V

L801

3

IC80

05

Pow

er_O

n/O

ff2_2

R81

7622

K

R80

261K

0.68

V

R80

03 2

2K

11.8

V11

.79V

11.8

V

3.36

V8

0.66

V0V

3.36

V

3.3V

0V

0V

3.1V

24.6

V

11.9

V

R81

3422

Oct

ober

201

0

42

LE55

00

LC

D-D

V

32 432 4

L800

5+2

4VC

8024

68uF

24V

21.2

7V

12V

12V

P-D

IM: D

igita

l D

imm

ing

(Var

iabl

e)

SBY3

.5V

2020

T6M

2_M

OSI

IC93

01D

imm

ing

R93

47 2

2M

2_M

OSI

R80

76 0

SIN

21.2

7V

21.2

7V

11.4

3V

11.4

3V

U5

R93

5022

VSYN

C /

R_V

S

SCLK

R80

78

0

VSYN

C

SIN

R6

M2_

SCLK

R_V

SR

9346

22

R80

77 0

M2_

SCLK

SCLK

VSYN

C

(Dat

a) 3

.25V

p/p

Dat

a

3.64

V

p/p

3.76

V p

/p

Page 39: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

39

AC

Sho

uld

not b

e ap

plie

d at

any

tim

e w

hile

add

ing

jum

pers

or

Whi

le u

nplu

ggin

g co

nnec

tors

as

dam

age

to th

e ci

rcui

t Boa

rd

may

occ

ur.

a) W

hen

AC

is a

pplie

d, th

e S

MP

S “M

US

T”be

pro

duci

ng

STB

Y 3

.5V

on

pins

9, 1

0, 1

1 or

12

of P

201.

If 3.

5V S

tand

by is

not

bei

ng g

ener

ated

, the

SM

PS

is d

efec

tive

and

mus

t be

repl

aced

. The

re is

no

need

to c

ontin

ue w

ith th

e ne

xt te

st.

But

, mak

e su

re A

C is

arri

ving

at t

he c

onne

ctor

SK

101.

(b) U

nplu

g P

8000

on

the

Mai

n B

oard

to m

ake

inse

rtion

of t

he J

umpe

rs e

asie

r. U

se P

700

Sid

e to

inse

rt re

sist

ors

TEST

1:

(1) A

dd a

jum

per b

etw

een

(3.5

V S

TBY

) pin

7, 8

, 9 o

r 10

and

Pin

1(P

WR

_ON

). A

pply

AC

. Th

is w

ill tu

rn o

n th

e po

wer

sup

ply,

rela

ys w

ill cl

ick.

a) C

heck

that

the

24V

and

12V

pow

er s

uppl

ies

are

turn

ed o

n,

•P2

01 (1

2V p

ins

17, 1

9 an

d 21

)•

P20

1 (2

4V p

ins

2, 3

and

4)

•P2

04 a

nd P

205

(120

V p

ins

1 an

d 12

) to

the

Pan

el. (

Or c

heck

D20

6 +

lead

)(2

) Rem

ove

AC

pow

er

Powe

r Sup

ply

Boar

d Lo

w Vo

ltage

Tes

t 1Po

wer S

uppl

y Bo

ard

Low

Volta

ge T

est 1

No

Bac

klig

hts

durin

g th

is te

st

Pin

1 is

the

Bro

wn

Wire

Page 40: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

40

Con

tinue

if th

e 1st

test

was

OK

. Le

ave

orig

inal

jum

per i

n pl

ace.

(3) A

dd a

noth

er ju

mpe

r bet

wee

n (S

TBY

_3.5

V)

pin

9, 1

0, 1

1 or

12

and

Pin

18

(INV

_On)

.

(4) A

pply

AC

Pow

er. S

imul

atin

g a

Pow

er a

nd

Bac

klig

ht O

n co

mm

and.

Bac

klig

hts

Nor

mal

:a)

If n

orm

al, t

he b

ackl

ight

s sh

ould

turn

on.

S

MP

S O

K, I

nver

ter O

K.

Bac

klig

hts

Abn

orm

al:

a) R

eche

ck a

ll co

nnec

tions

.b)

Con

firm

the

INV

On/

Off

line

pulli

ng u

p to

at l

east

3V

. c)

Che

ck th

e co

nnec

tions

to th

e P

anel

.

If th

e In

verte

r On

com

man

d is

pul

ling

up to

3V

and

the

120V

is b

eing

gen

erat

ed

from

D20

6 +

lead

, See

the

Inve

rter S

ectio

n of

the

Pow

er S

uppl

y fo

r add

ition

al c

heck

s.

Not

e: If

eith

er P

204

or P

205

is d

isco

nnec

ted,

the

back

light

s w

ill c

ome

on,

but s

hut o

ff in

4 s

econ

ds.

REM

OVE

AC

PO

WER

:

Powe

r Sup

ply

Boar

d Ba

cklig

hts

Test

2Po

wer S

uppl

y Bo

ard

Back

light

s Te

st 2

Pin

1 is

the

Bro

wn

Wire

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EB

C

EB

C

EB

C

EB

C

EB

C

EB

C

EB

C

EB

C

EBC

EBC

EBC

EB

C

P204

P205

Thes

e dr

iver

s gr

ound

the

LED

blo

cks.

(12

Tota

l). If

the

120V

is p

rese

nt o

n P

ins

1 an

d 12

of P

204

and

P20

5 yo

u ca

n gr

ound

thes

e te

st p

oint

s to

turn

on

a bl

ock.

1V (1

00 IR

E)

30V

(0 IR

E)

42LE

5500

Inve

rter

Par

t of t

he S

MPS

42LE

5500

Inve

rter

Par

t of t

he S

MPS

41O

ctob

er 2

010

42LE

5500

L

CD

-DV

Gnd

Gnd

120V

120V

120V

120Vn/c

n/c

n/c

n/c

n/c

n/c

Loca

l Dim

min

g O

nL-

DIM

(SIN

)

Loca

l Dim

min

g O

ffL-

DIM

(SIN

)32

V p

/p

LED

Driv

e Si

gnal

50

IRE

3.64

V p

/pV-

Sync

Sig

nal

3.25

V p

/p

3.25

V p

/p

*1V

~30V

LED

Driv

e

*1V

~30V

LED

Driv

e

*1V

~30V

LED

Driv

e

*1V

~30V

LED

Driv

e

*Whi

te 1

00 IR

E to

Bla

ck 0

IRE

INVE

RTE

R

Sect

ion

of th

e SM

PS

Inve

rter

Top

Lef

t Con

nect

or1

VDD

-33

3.5V

2V

LED

-RA

NG

E0V

3G

ndG

nd4

+12V

S12

.44V

Pin

17-

19-2

1 P

201

5G

ndG

nd6

+3.5

VS

3.57

VP

in 9

-12

P20

1

Inve

rter

Cen

ter L

eft C

onne

ctor

1IN

V_O

N3.

28V

Pin

18

P20

12

Gnd

Gnd

3G

ndG

nd4

SCLK

0.09

VP

in 2

0 P

201

5FB

_STR

_VF

1V6

P-D

M1

1.9V

Pin

22

P20

1

Inve

rter

Bot

tom

Lef

t Con

nect

or1

Err

or0V

Pin

24

P20

12

(L-D

IM) S

IN3.

3VP

in 2

3 P

201

3P

OW

ER

_ON

3.35

VP

in 1

P20

14

VS

YNC

_IN

0VP

in 1

6 P

201

5G

ndG

nd6

Gnd

Gnd

Pin

23

P20

1

Pin

23

P20

1

Pin

16

P20

1

3.76

V p

/pSC

LK S

igna

l

Pin

20

P20

1

100u

Sec

10m

Sec

100u

Sec

Page 42: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

42

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

(1) P

DIM

1 Pi

n 22

can

var

y ac

cord

ing

to in

com

ing

vide

o IR

E

leve

l, O

SD

Back

light

set

ting

and

then

Inte

lligen

t Sen

sor

(room

ligh

t con

ditio

n) O

utpu

t fro

m th

e V

ideo

Pro

cess

or

IC90

0. R

ange

0.3

7V to

3.3

V.

.

Powe

r Sup

ply

Con

nect

or P

201

Volta

ge a

nd D

iode

Che

ckPo

wer S

uppl

y C

onne

ctor

P20

1 Vo

ltage

and

Dio

de C

heck

P201

Con

nect

or “

SMPS

”to

“M

ain”

P800

0P2

01 C

onne

ctor

1

Odd

pin

s ar

e on

fro

nt ro

w

1.02

V3.

36V

0VPW

R-O

N1

1.10

V21

.27V

0V24

V2-

4

Gnd

Gnd

Gnd

Gnd

5-8

Ope

n3.

5V3.

57V

3.5V

9-12

Gnd

Gnd

Gnd

Gnd

13-1

5

Ope

n0.

02V

0VV_

SYN

C16

0.17

8V11

.43V

0V12

V17

Ope

n3.

28V

0VIN

V-O

N18

0.17

8V11

.43V

0V12

V19

Ope

n0.

09V

0VSC

LK20

0.17

8V11

.43V

0V12

V21

Ope

n0.

38V~

3.3V

0VP-

DIM

122

Ope

n3.

3V0V

L-D

IM (S

IN)

23

*1.4

5VG

ndG

ndER

RO

R24

Dio

de

Che

ckR

un

STB

YLa

bel

Pin

P201

Lab

el

P-D

IM1

3.66

V p

/p 5

0IR

E

*Pin

24

is g

roun

ded

on th

e M

ain

Boar

d

Page 43: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

43

Powe

r Sup

ply

Con

nect

or P

204

/ P2

05 V

olta

ge a

nd D

iode

Che

ckPo

wer S

uppl

y C

onne

ctor

P20

4 /

P205

Vol

tage

and

Dio

de C

heck

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

(1)Th

e dr

ive

sign

al c

hang

es d

ue to

the

brig

htne

ss le

vel o

f the

ba

cklig

hts.

Low

indi

cate

s “B

right

”. H

igh

indi

cate

s “D

im”.

P204

"SM

PS"

to “

The

Pane

l"P2

04

1

P205

Ope

n12

0V0V

01.A

1

Ope

n0V

n/c

n/c

2

Ope

n(1

) 1V~3

0V0V

02-1

C3

Ope

n(1

) 1V~3

0V0V

01-2

C4

Ope

n(1

) 1V~3

0V0V

01-3

C5

Ope

nn/

cn/

cn/

c7-

6

Ope

n(1

) 1V~3

0V0V

02-3

C8

Ope

n(1

) 1V~3

0V0V

02-2

C9

Ope

n(1

) 1V~3

0V0V

02-1

C10

Ope

nn/

cn/

cn/

c11

Ope

n12

0V0V

02.A

12

Dio

de

Che

ckR

un

STB

YLa

bel

Pin

Ope

n12

0V0V

03.A

1

Ope

n0V

n/c

n/c

2

Ope

n(1

) 1V~3

0V0V

03-1

C3

Ope

n(1

) 1V~3

0V0V

03-2

C4

Ope

n(1

) 1V~3

0V0V

03-3

C5

Ope

nn/

cn/

cn/

c7-

6

Ope

n(1

) 1V~3

0V0V

04-3

C8

Ope

n(1

) 1V~3

0V0V

04-2

C9

Ope

n(1

) 1V~3

0V0V

04-1

C10

Ope

nn/

cn/

cn/

c11

Ope

n12

0V0V

04.A

12

Dio

de

Che

ckR

un

STB

YLa

bel

Pin

P205

"SM

PS"

to “

The

Pane

l"

1

Page 44: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

44

Powe

r Sup

ply

Con

nect

or S

K101

and

AC

Fus

es V

olta

ge a

nd D

iode

Che

cPo

wer S

uppl

y C

onne

ctor

SK1

01 a

nd A

C F

uses

Vol

tage

and

Dio

de C

hec kk

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

AC

Vol

tage

Rea

ding

s (F

rom

Hot

Gro

und)

Pin

s 1

and

2 fo

r STB

Y a

nd R

UN

.

OL

NE

L3

OL

120V

acL

EL1

Dio

de C

heck

Run

S

TBY

Labe

lP

inSK10

1 "S

MPS

" to

AC

IN

SK

101

Bot

tom

Rig

ht o

f SM

PS

F100

F100

6.3A

/250

VA

C IN

F100

or F

102

(Dio

de C

heck

)M

ain

Pow

er S

witc

h C

lose

d

Red

or B

lack

Lea

d on

Fus

e (O

pen)

Oth

er L

ead

on H

ot G

roun

d

LN

F102

F102

1A/2

50V

AC

Page 45: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

45

Powe

r Sup

ply

F101

and

F10

3 Vo

ltage

Che

cks

Powe

r Sup

ply

F101

and

F10

3 Vo

ltage

Che

cks

F100

3.15

A/2

50V

From

Hot

Gnd

STB

Y 7

.6V

Run

396

V

F103

1A/2

50V

From

Hot

Gnd

STB

Y 7

.6V

Run

396

V

If th

e se

t was

on

and

then

turn

ed o

ff in

to th

e S

tand

-By

cond

ition

, the

vol

tage

ta

kes

a ve

ry lo

ng ti

me

to b

leed

dow

n to

the

read

ing

give

n he

re.

Page 46: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

46

MAI

N B

OAR

D S

ECTI

ON

MAI

N B

OAR

D S

ECTI

ON

The

Mai

n bo

ard

rece

ives

its

oper

atio

nal B

+ fr

om th

e Po

wer

Sup

ply

via

P800

0.

Ther

e ar

e tw

o LV

DS

cabl

e fe

eds

that

are

out

put f

rom

the

on-b

oard

T-C

ON

(TFT

Driv

er) s

ectio

n di

rect

ly to

the

Pane

l. Th

ese

carr

y th

e du

el 1

2 bi

t LVD

S Vi

deo

and

TruM

otio

n Vi

deo

equa

ling

a 12

0Hz

vide

o si

gnal

. The

se s

igna

ls h

ave

alre

ady

been

pre

pare

d fo

r the

Pan

el’s

Lef

t and

Rig

ht b

oard

s. T

he

Mai

n bo

ard

also

incl

udes

the

Tune

r, A

udio

and

Aud

io/V

ideo

inpu

tsan

d se

lect

ion

circ

uits

.

STA

ND

-BY

•ST

BY

3.5V

(P80

00 p

ins

9~12

)

The

Mai

n bo

ard

also

dev

elop

s se

vera

l B+

sour

ces

on th

e bo

ard.

LVD

S •Pa

nel_

VCC

(12V

Not

gen

erat

ed, b

ut s

witc

hed

from

the

12V

arri

ving

from

the

SM

PS

).

RU

N •

12V

pins

13

and

14

•20

V pi

ns 1

7 an

d 18

.

TUN

ER a

nd V

SB C

IRC

UIT

3.3V

_TU

(Mad

e fro

m 3

.3V

_Nor

mal

).•

1.26

V_TU

(Mad

e fro

m 3

.3V

_TU

).

STA

ND

-BY

VOLT

AG

ES•

3.3V

_ST

(Vol

tage

dire

ct fr

om S

MP

S).

GEN

ERA

L•

5V_N

orm

al(M

ade

from

12V

In).

•3.

3V_N

orm

al(M

ade

from

12V

In).

•5V

USB

(Mad

e fro

m 1

2V In

).

Inpu

t Vol

tage

s fr

om S

MPS

.

WIR

ELES

S VO

LTA

GES

to J

K87

00•

20V

(Sw

itche

d fr

om 2

0V fr

om S

MPS

)

AU

DIO

IC88

01•1

.8V

(Mad

e fro

m 3

.3V

_Nor

mal

).

BC

M IC

900

Mic

ro/V

ideo

Pro

cess

or•3

.3V_

ST, 1

.2V,

D1.

5V, D

1.8V

IC93

01 T

ru-M

otio

n an

d D

imm

ing

IC•1

.26V

_MEM

C, 1

.5V_

MEM

C,

and

3.3V

_MEM

C

T-C

ON

IC90

01•3

.3V_

VCC

, -5V

_VG

L, 2

7V_V

GH

, 16

V_VD

D a

nd H

VDD

(7.8

V)

HD

MI V

OLT

AG

ES (Q

200)

•1.

8V_H

DM

I (Fr

om D

1.8V

)

Page 47: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

47

Mai

n Bo

ard

Layo

utM

ain

Boar

d La

yout

VID

EO

PRO

CES

SOR

IC

900,

T-C

ON

IC

9001

and

Tr

u-M

otio

n IC

9301

ru

ns H

ot.

This

is n

orm

al.

P750

1

To P

anel

P750

0

Com

pone

nt In

Thes

e co

nnec

tors

are

M

ini p

lug

type

P880

0To

Spe

aker

sP8

200

To F

ront

IR

P810

0n/

c

LAN

Wire

less

Rem

ote

P900

0n/

c

P800

0To

SM

PS

See

next

pag

e fo

r co

mpo

nent

id

entif

icat

ion

Hea

dpho

ne

IC90

0

IC90

1

IC93

01

p/n:

EBU

6090

4603

HD

MI

USB

1

USB

2

Page 48: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

201

0

42L

E55

00

LC

D-D

V

42LE

5500

Mai

n La

yout

42LE

5500

Mai

n La

yout

48

E

C BA1C

A2

QD

SW93

00Tr

u-M

otio

nR

eset

SW81

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icro

proc

esso

rR

eset

SW10

00Vi

deop

roce

ssor

Res

et

D

GS

A-C

A C

MA

IN B

OA

RD

p/n:

EB

U60

9046

03

Q?

P820

0

IC90

0Vi

deo

Proc

esso

rLG

E354

9XQ

P880

0

Q82

00

Q82

01

Q87

00

IC83

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805

L880

4

HD

MI

Sele

ctIC

8801

IC88

00IC88

04Q

8800M

icro

IC81

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1000

SW

8100

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P900

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pdat

e

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1

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CO

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7378

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5111

RX/

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X930

025

Mhz

IC93

00

SW93

00

P750

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500

IC91

00 L910

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9102

L910

2

L910

1

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03

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A C

D91

01

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02IC

9302

L930

1 IC89

01IC

8900

L890

4

3

21

3

21

Q80

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8005

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01

Q80

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08Q

8007

L890

5 IC89

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8902

L801

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8202

IC80

01

IC80

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5

IC80

05

P800

0

L801

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009

P90

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amm

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IC60

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IC30

2

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4U

SB1

54M

Hz

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01

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0

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300

TU70

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VJ-

H03

1F18

. IF

p17

. IF

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. IF

AG

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et14

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Page 49: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

42L

E55

00 M

ain

(Fro

nt S

ide)

Com

pone

nt V

olta

ges

IC30

0E

arph

one

Am

pIC

700

(+1.

26V

_TU

)IC

8002

(D1.

8V)

IC80

05 (+

3.3V

_NO

RM

AL)

IC89

02(+

1.26

V_M

EM

C)

IC91

02D

C to

DC

Pin

Pin

Reg

ulat

orP

inR

egul

ator

Pin

Reg

ulat

orP

inR

egul

ator

Pin

HV

DD

T-C

ON

[1]0

V[1

]0V

(Gnd

)[1

]5V

[1]0

V (G

nd)

[1]0

V (G

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1.72

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n)[3

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[3]3

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[3]1

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(Out

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(Gnd

)[3

]11.

72V

(In)

[4]0

V[4

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[4]0

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[4]3

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[5]0

VIC

1000

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WR

On/

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Ctl)

[6]0

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V[1

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2V (I

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V[7

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6V (O

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]0V

[8](

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V (G

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WR

On/

Off1

Ctl)

IC80

07P

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Det

Gen

IC89

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)[1

0]1.

13V

[11]

0.9V

IC80

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Reg

ulat

orP

in(+

12V

and

+3.

5V)

Pin

Reg

ulat

or[1

1]0V

(Gnd

)[1

2]1.

8VP

info

r US

BIC

8003

(+5V

_NO

RM

AL)

[1]0

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nd)

[1]0

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nd)

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nd)

[13]

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[1]1

1.79

V (I

n)P

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nd)

[3]3

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4]7.

7V[1

5]G

nd[3

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8V (I

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7V (H

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D)

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5V[3

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(Gnd

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8008

Pow

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VP

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6V (P

WR

On/

Off2

Ctl)

IC30

1S

witc

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[6]0

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nd)

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9300

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et fo

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SB

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[8]3

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inLG

5111

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nd [8

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[8]5

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9100

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VIC

8001

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IC88

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4V (O

ut)

[4]3

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Pin

Reg

ulat

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8004

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5V R

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Pin

Reg

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]3.3

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info

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B[1

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9302

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nd)

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[3]3

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V (I

n)[4

]0V

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)[1

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(Gnd

) [8

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[4]1

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[3]3

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[2]1

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8901

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EM

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[6]6

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[3]0

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nd)

IC30

2S

witc

hed

[6]n

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]n/c

Pin

Reg

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or[7

]15.

3V[4

]0.8

VP

in5V

for U

SB

1[7

]4.4

6V[6

]2.5

5V (O

ut)

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nd)

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[1]G

nd [8

]3.3

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WR

On/

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[2]5

V (I

n)[9

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V [8

]0V

(Gnd

)[3

]3.3

V (I

n)[1

0]13

.47V

[7]1

.8V

(In)

[3]5

V[1

0]3.

3V[1

1]12

.75V

[8]1

.8V

(In)

[4]3

.3V

[11]

1.2V

Q80

05IN

V_O

NQ

8306

HD

MI

[12]

11.8

V[5

]3.3

V[1

2]G

ndP

inD

river

Pin

Det

[13]

10V

D91

01V

GH

/VD

D[6

]5V

(Out

)[1

3]3.

3VB

0V (I

NV

ON

) En

B0V

[14]

5.96

VP

inR

ectif

yer

[7]5

V (O

ut)

[14]

0.8V

C3.

1V (O

ut)

C3.

3V[1

5]4.

06V

A15

.4V

[8]n

/cE

Gnd

EG

nd[1

6]15

.3V

AC

22.2

V[1

7]0V

C27

.4V

(VG

H)

Q30

0 E

arph

one

Mut

eQ

8003

PA

NE

L_V

CC

Q82

00IR

Buf

fer

Q83

07H

DM

I [1

8]2.

96V

Pin

L O

utP

inC

ontro

l 2nd

Driv

erP

in2n

dP

inD

et[1

9]2.

33V

D91

02V

GL/

VC

CB

0VB

0.67

9VB

0.02

VB

0V[2

0]3.

3V (I

n)P

inR

ectif

yer

C3.

3VC

0VC

3.4V

C4.

18V

A(-

5V V

GL)

EG

ndE

Gnd

EG

ndE

Gnd

AC

(-1.

9V)

C0V

Q80

01P

AN

EL_

VC

CQ

8004

PA

NE

L_V

CC

Q82

01IR

Buf

fer

Q87

00W

irele

ss P

WR

Q88

00A

MP

_MU

TEP

inC

ontro

l 1st

Driv

erP

inS

witc

hP

in1s

tD

ongl

e O

utTu

rns

on Q

8701

Pin

Pin

25

IC88

01B

0VS

11.8

V (I

n)B

0VB

0.66

V (0

.0V

Don

gle

In)

B0V

C0.

68V

G1.

8V (E

nabl

e)C

3.3V

C0.

14V

(24V

Don

gle

In)

C3.

336V

EG

ndD

11.8

V (O

ut)

EG

ndE

Gnd

EG

nd

49

Oct

ober

201

0

42LE

5500

LC

D-D

V

Page 50: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

201

0

42L

E55

00

LC

D-D

V

42LE

5500

Mai

n (B

ack

Side

) Lay

out

42LE

5500

Mai

n (B

ack

Side

) Lay

out

50

E

C BA1C

A2

QD

MA

IN B

OA

RD

p/n:

EB

U60

9046

03

Q90

1

IC60

2IC

606

IC60

4

18. I

F p

17. I

F n

16. I

F A

GC

15. R

eset

14. 3

.3V

13. 1

.26V

12. G

ND

11. C

VB

S10

. NC

9. S

IF

8. N

C 7

. SD

A 6

. SC

L 5

. NC

4. N

C 3

. 5V

2. N

C 1

. NC

Dig

ital V

ideo

Ana

log

Vid

eo

Tune

r B+

Tune

r Dat

aTu

ner C

lock

Aud

io

TU70

0TD

VJ-H

031F Q

702

Q70

1

Rub

ber

IC82

00

IC84

01

IC84

00Q83

04

Q83

01D

8307

Q83

03Q

8300

D83

09Q

8701

IC87

00Q

8205

Q82

03

Q83

05Q

8302

D83

06

Rubber

D

S G

Q20

0

G

S B

D

Q83

08

D83

12

IC81

00

IC90

00

IC90

03

IC90

01

Rub

ber

Rub

ber

Q80

00

Q80

021 2

3

Page 51: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

42L

E55

00 M

ain

(Bac

k Si

de) C

ompo

nent

Vol

tage

s

IC60

2D

1.8V

IC84

00 R

GB

IC87

00W

irele

ssQ

200

(1.8

V_H

DM

I)Q

8203

IR W

irele

ss P

ass

Pin

Reg

ulat

orP

inH

/V S

ync

Pin

Buf

fer

Pin

Sw

itch

Pin

2nd

Driv

er[1

]0V

(Gnd

)[1

]1.9

V[1

]0V

(3.3

V D

ongl

e In

)S

1.83

V (O

ut)

B0V

[2]3

.29V

(PW

R O

n/O

ff1 C

tl)[2

]1.9

V[2

]3.3

V (0

.3V

Don

gle

In)

G3.

35V

(PW

R O

n/O

ff2 C

tl)C

3.3V

[3]0

.9V

(DD

R_V

TT)

[3]4

.4V

[3]n

/cD

1.83

V (I

n)E

Gnd

[4]0

.93V

[4]0

V[4

]n/c

[5]1

.83V

[5]0

.9V

[5]n

/cQ

701

Tune

r SIF

[6]3

.38V

(In)

[6]n

/c (4

.5V

)[6

]Gnd

Pin

(Sou

nd) B

uffe

rQ

8205

IR W

irele

ss P

ass

[7]1

.8V

(Out

)[7

]0V

(Gnd

)[7

]Gnd

B0.

16V

Pin

1st D

river

[8]0

.91V

(DD

R_V

TT)

[8]n

/c (4

.5V

) [8

]Gnd

CG

ndB

0.6V

[9]n

/c (1

.9V

)[9

]n/c

E0.

83V

C0V

IC81

00E

EP

RO

M[1

0]n/

c (1

.9V

)[1

0]0.

02V

EG

ndP

inM

icro

[11]

n/c

(4.5

V)

[11]

0VQ

702

Tune

r Vid

eo[1

]0V

(Gnd

)[1

2]0.

9V[1

2]3.

3VP

in(A

nalo

g) B

uffe

rQ

8300

, 2H

DM

I 2[2

]0V

(Gnd

)[1

3]0.

9V[1

3]0V

(3.3

V D

ongl

e In

)B

2.05

VP

inD

et[3

]0V

(Gnd

)[1

4]5V

[14]

3.3V

C2.

75V

B4.

2V[4

]0V

(Gnd

)[1

5]3.

3VE

Gnd

C0V

[5]3

.37V

IC84

01E

DID

Dat

a[1

6]3.

3VE

Gnd

[6]3

.37V

Pin

PC

Q90

1FL

AS

H_W

P[7

]0V

(Gnd

)[1

]0V

(Gnd

)IC

9303

EE

PR

OM

Pin

for I

C90

1Q

8303

, 4, 5

HD

MI 3

[8]3

.37V

[2]0

V (G

nd)

Pin

for L

G51

11B

0V (F

lash

_WP

)P

inD

et[3

]0V

(Gnd

)[1

]0V

(Gnd

)C

3.36

VB

0VIC

8200

RS

232

[4]0

V (G

nd)

[2]0

V (G

nd)

EG

ndC

4.2V

Pin

Rou

ting

[5]0

.7V

[3]0

V (G

nd)

EG

nd[1

]0V

[6]4

.1V

[4]0

V (G

nd)

Q80

00R

L_O

N (P

WR

_On)

[2]0

V[7

]4.5

V[5

]3.3

7VP

in1s

t Driv

erQ

8308

CE

C R

emot

e[3

]0V

[8]4

.5V

(In)

[6]3

.37V

B0.

66V

Pin

HD

MI C

EC

[4]0

V[7

]3.3

4VC

0V[B

]2.7

2V[5

]0V

IC90

00S

eria

l Fla

sh [8

]3.3

7V (I

n)E

Gnd

[G]2

.73V

[6](

-5.4

7V)

Pin

T-C

ON

[S]3

.27V

[7]n

/c (5

.59V

)[1

]0.0

6VQ

8002

PW

R_O

N[D

]3.3

7V [8

]n/c

(0V

)[2

]0.6

7VD

8306

, 7, 9

5V P

ull U

p R

outin

gP

inS

witc

h[9

]n/c

(3.3

V)

[3]3

.3V

(In)

Pin

HD

MI S

CL/

SD

A[1

]3.3

6V (I

n)Q

8701

IR W

irele

ss P

ass

[10]

n/c

(0.2

V)

[4]0

V (G

nd)

A1

5.04

V[2

]0V

Pin

2nd

Driv

er[1

1]n/

c (3

.3V

)[5

]0V

C4.

58V

[3]3

.3V

(Out

)G

24.5

V (2

.3V

Don

gle

I[1

2]3.

35V

[6]0

.34V

A2

0VS

24V

[13]

0V[7

]3.3

1V (I

n)D

0V (2

4.5V

Don

gle

In)

[14]

(-5.

47V

) [8

]3.3

4V (I

n)D

8312

3.5V

Pul

l Up

[15]

0V (G

nd)

Pin

HD

MI C

EC

[16]

3.37

VA

10V

C3.

26V

A2

3.2V 51

Oct

ober

201

0

42LE

5500

LC

D-D

V

Page 52: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

52

Mai

n Bo

ard

X90

01 a

nd X

9000

Cry

stal

Che

cks

Mai

n Bo

ard

X90

01 a

nd X

9000

Cry

stal

Che

cks

25M

hz

MA

IN B

oard

1.58

V

1.6V

X900

1

3.19

V p/

p

4.86

V p/

p

IC90

01 T

-CO

N C

ryst

al

1.56

V

1.6V

X900

0

2.54

V p/

p

3.27

V p/

p

IC93

01 T

ruM

otio

n /

Dim

min

g C

ryst

al

12M

hz

X900

1

X900

0

Run

s w

hen

set i

s O

n

Run

s w

hen

set i

s O

n

Page 53: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

53

Mai

n Bo

ard

X81

00 a

nd X

1001

Cry

stal

Che

cks

Mai

n Bo

ard

X81

00 a

nd X

1001

Cry

stal

Che

cks

10M

hz

MA

IN B

oard

1.95

V

1.52

X810

0

3.13

V p/

p

2.26

V p/

p

IC90

0 B

CM

Cry

stal

1.52

V

1.3V

X100

1

781m

V p/

p

789m

V p/

p

IC81

00 M

icro

Cry

stal

54M

hz

X810

0

X100

1X8

101

1.75

V1.

5V

1.85

V p/

p2.

82V

p/p

Eith

er le

gE

ither

leg

Eith

er le

g

Run

s al

lTh

e tim

eR

uns

whe

n se

t is

On

Run

s al

lTh

e tim

e

Page 54: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

54

Mai

n Bo

ard

DC

to D

C C

onve

rter

(Vo

ltage

s fo

r Pan

el)

Che

cks

Mai

n Bo

ard

DC

to D

C C

onve

rter

(Vo

ltage

s fo

r Pan

el)

Che

cks

-5V

VGL

D91

02

+27V

VGH

D91

01

+3.3

VVC

C

+16V

VDD

Pan

el 1

2V

Loca

tion:

Top

Cen

ter o

f Boa

rd

IC91

03

+7.8

1VH

VDD

IC91

02

B+

for

IC91

02IC

9103

L910

2

L910

4

L910

0

L910

1

Pan

el 1

2V

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Oct

ober

20

10

LC

D T

V4

2LE

55

00

55

Mai

n Bo

ard

Addi

tiona

l Pan

el V

olta

ge C

heck

sM

ain

Boar

d Ad

ditio

nal P

anel

Vol

tage

Che

cks

-4.8

V (V

DD

-OD

D)

Loca

tion:

Top

Lef

t of B

oard

From

IC91

01 P

in 2

1

P750

0P7

501

-4.8

V (V

DD

-EVE

N)

-4.7

V (V

ST)

IC91

01B

ack

Side

of B

oard

From

IC91

01 P

in 2

0

From

IC91

01 P

in 1

9

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Oct

ober

20

10

LC

D T

V4

2LE

55

00

56

Mai

n Bo

ard

Con

nect

or P

8000

to P

ower

Sup

ply

Volta

ge a

nd D

iode

Che

Mai

n Bo

ard

Con

nect

or P

8000

to P

ower

Sup

ply

Volta

ge a

nd D

iode

Che

ckck

Dio

de M

ode

valu

es ta

ken

with

al

l Con

nect

ors

Rem

oved

(1)P

DIM

Pin

22

can

vary

acc

ordi

ng to

inco

min

g vi

deo

IRE

leve

l, O

SD

Bac

klig

ht s

ettin

g an

d In

tellig

ent S

enso

r (ro

om li

ght c

ondi

tion)

. R

ange

0.3

7V to

3.3

V.

P800

0 “M

ain

Boa

rd"

to P

201

“SM

PS"

P800

0

Odd

Pin

s Fr

ont R

ow

Gnd

Gnd

Gnd

ER

RO

R24

1.05

V3.

3V0V

L-D

IM (S

IN)

23

Ope

n0.

38V~

3.3V

0VP

-DIM

22

Ope

n11

.43V

0V12

V21

1.06

V0.

09V

0VSC

LK20

Ope

n11

.43V

0V12

V19

1.62

V3.

28V

0VIN

V-O

N18

Ope

n11

.43V

0V12

V17

1.06

V0.

02V

0VV

-SY

NC

16

Gnd

Gnd

Gnd

Gnd

13-1

5

1.24

V3.

5V3.

57V

3.5V

9-12

Gnd

Gnd

Gnd

Gnd

5-8

Ope

n21

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0V24

V2-

4

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36V

0VP

WR

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1

Dio

de C

heck

Run

ST

BY

Labe

lPi

n

P-D

IM1

3.66

V p

/p 5

0IR

E

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Oct

ober

20

10

LC

D T

V4

2LE

55

00

57

Mai

n Bo

ard

Con

nect

or P

7500

to th

e Pa

nel V

olta

ge a

nd D

iode

Che

ckM

ain

Boar

d C

onne

ctor

P75

00 to

the

Pane

l Vol

tage

and

Dio

de C

heck

Ther

e ar

e no

Sta

nd-B

y V

olta

ges

for t

he C

onne

ctor

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

P750

0 C

onne

ctor

“M

ain"

to th

e “P

anel

Gnd

Gnd

Gnd

20

1.06

V0.

3VSO

E19

1.06

V0.

62V

POL

18

1.06

V0V

VST_

IN17

Gnd

1.07

VH

_CO

NV

16

2.06

V1.

06V

OPT

_N15

Gnd

Gnd

Gnd

14

Ope

n1.

06V

GM

A18

13

Ope

n2.

35V

GM

A16

12

Ope

n2.

98V

GM

A15

11

Ope

n4.

08V

GM

A13

10

Ope

n5.

99V

GM

A12

9

Ope

n7.

48V

GM

A10

8

Ope

n8.

02V

GM

A97

Ope

n10

.02V

GM

A76

Ope

n11

.88V

GM

A65

Ope

n12

.78V

GM

A44

Ope

n13

.5V

GM

A33

Ope

n14

.91V

GM

A12

Gnd

Gnd

Gnd

1

Dio

de

Che

ckR

unLa

bel

Pin

Ope

n7.

81V

HVD

D40

Ope

n7.

81V

HVD

D39

Gnd

Gnd

Gnd

38

1.64

V3.

3VVC

C37

1.64

V3.

3VVC

C36

Gnd

Gnd

Gnd

35

1.09

V1.

3VLV

5-34

0.9V

1.02

VLV

5+33

1.09

V1.

3VLV

4-32

0.9V

1.02

VLV

4+31

1.09

V1.

27V

LV3-

30

0.9V

1.07

VLV

3+29

1.09

V1.

17V

LVC

LK-

28

0.9V

1.16

VLV

CLK

+27

1.09

V1.

3VLV

2-26

0.9V

1.03

VLV

2+25

1.09

V1.

3VLV

1-24

0.9V

1.4V

LV1+

23

1.09

V1.

27V

LV0-

22

0.9V

1.06

VLV

0+21

Dio

de

Che

ckR

unLa

bel

Pin

Gnd

Gnd

Gnd

60

Ope

n7.

7VZ_

OU

T59

1.5V

8VC

LK1

58

1.5V

8VC

LK2

57

1.5V

8VC

LK3

56

1.5V

8VC

LK4

55

1.5V

8VC

LK5

54

1.5V

8VC

LK6

53

Ope

n27

.4V

VGI_

N(V

GH

)52

0.6V

(-5V)

VGI_

P(V

GL)

51

1.5V

(-4.8

V)VD

D_O

DD

50

1.5V

(-4.8

V)VD

D_E

VEN

49

0.6V

(-5V)

VGL

48

1.5V

(-4.7

V)VS

T47

Gnd

Gnd

Gnd

46

Ope

n6.

87V

VCO

M_F

B45

Ope

n6.

86V

VC

OM

_IN

44

Gnd

Gnd

Gnd

43

Ope

n15

.57V

VDD

42

Ope

n15

.57V

VDD

41

Dio

de

Che

ckR

unLa

bel

Pin

Page 58: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

58

Mai

n Bo

ard

Con

nect

or P

7501

to th

e Pa

nel V

olta

ge a

nd D

iode

Che

ckM

ain

Boar

d C

onne

ctor

P75

01 to

the

Pane

l Vol

tage

and

Dio

de C

heck

Ther

e ar

e no

Sta

nd-B

y V

olta

ges

for t

he C

onne

ctor

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

P750

1 C

onne

ctor

“M

ain"

to th

e “P

anel

Ope

n15

.57V

VDD

20

Ope

n15

.57V

VDD

19

Gnd

Gnd

Gnd

18

Ope

n6.

86V

VC

OM

_IN

17

Ope

n6.

87V

VCO

M_F

B16

Gnd

Gnd

Gnd

15

1.5V

(-4.7

V)VS

T14

0.6V

(-5V)

VGL

13

1.5V

(-4.8

V)VG

H_E

VEN

12

1.5V

(-4.8

V)VG

H_O

DD

11

0.6V

(-5V)

VGH

10

Ope

n27

.4V

VGH

9

1.5V

8VC

LK6

8

1.5V

8VC

LK5

7

1.5V

8VC

LK4

6

1.5V

8VC

LK3

5

1.5V

8VC

LK2

4

1.5V

8VC

LK1

3

Ope

n7.

7VZ_

OU

T2

Gnd

Gnd

Gnd

1

Dio

de

Che

ckR

unLa

bel

Pin

0.9V

1.22

VR

V5-

40

1.09

V1.

13V

RV5

+39

0.9V

1.22

VR

V4-

38

1.09

V1.

12V

RV4

+37

0.9V

1.27

VR

V3-

36

1.09

V1.

08V

RV3

+35

0.9V

1.18

VR

VCLK

-34

1.09

V1.

17V

RVC

LK+

33

0.9V

1.22

VR

V2-

32

1.09

V1.

13V

RV2

+31

0.9V

1.23

VR

V1-

30

1.09

V1.

13V

RV1

+29

0.9V

1.12

VR

V0-

28

1.09

V1.

07V

RV0

+27

Gnd

Gnd

Gnd

26

1.64

V3.

3VVC

C25

1.64

V3.

3VVC

C24

Gnd

Gnd

Gnd

23

Ope

n7.

81V

HVD

D22

Ope

n7.

81V

HVD

D21

Dio

de

Che

ckR

unLa

bel

Pin

Gnd

Gnd

Gnd

60

Ope

n14

.91V

GM

A159

Ope

n13

.5V

GM

A358

Ope

n12

.79V

GM

A457

Ope

n11

.88V

GM

A656

Ope

n10

.02V

GM

A755

Ope

n8.

02V

GM

A954

Ope

n7.

48V

GM

A10

53

Ope

n5.

99V

GM

A12

52

Ope

n4.

08V

GM

A13

51

Ope

n2.

98V

GM

A15

50

Ope

n2.

35V

GM

A16

49

Ope

n1.

06V

GM

A18

48

Gnd

Gnd

Gnd

47

2.06

V1.

06V

OPT

_N46

Gnd

1.07

VH

_CO

NV

45

1.06

V0V

VST_

IN44

1.06

V0.

62V

POL

43

1.06

V0.

3VSO

E42

Gnd

Gnd

Gnd

41

Dio

de

Che

ckR

unLa

bel

Pin

Page 59: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

59

Mai

n Bo

ard

P820

0 to

(Ft

. IR/

Inte

llige

nt S

enso

r) V

olta

ge a

nd D

iod

Mai

n Bo

ard

P820

0 to

(Ft

. IR/

Inte

llige

nt S

enso

r) V

olta

ge a

nd D

iod e

Che

cke

Che

ck

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

P820

0 C

onne

ctor

"M

AIN

Boa

rd"

To P

100

"IR

Boa

rd"

P820

01

121110987654321Pin

Ope

n0V

0VLE

D_R

/BU

ZZ0.

52V

3.34

V0V

+3.3

V_N

orm

alG

ndG

ndG

ndG

ndO

pen

1.6V

1.63

V(2

) IRO

pen

0V0V

LED

_LO

GO

Gnd

Gnd

Gnd

Gnd

1.24

V3.

47V

3.56

V3.

5V_S

T1.

9V3.

3V3.

29V

KEY

21.

9V3.

3V3.

32V

KEY

1G

ndG

ndG

ndG

ndO

pen

3.5V

3.56

V(1

) SDA

Ope

n3.

5V3.

56V

(1) SC

LD

iode

Che

ckR

un

STB

YLa

bel

(1) C

lock

pul

ses

only

pre

sent

whe

n In

tellig

ent S

enso

r is

turn

ed o

n. (3

.7V

p/p

)(2

) IR

pul

ses

(1.6

V p

/p)

Page 60: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

60

Mai

n Bo

ard

Con

nect

or P

8800

to S

peak

ers

Volta

ge a

nd D

iode

Che

ckM

ain

Boar

d C

onne

ctor

P88

00 to

Spe

aker

s Vo

ltage

and

Dio

de C

heck

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

P880

0 C

ON

NEC

TOR

"M

ain"

to "

Spea

kers

"

SPK

-L(+

)SP

K-L

(-)SP

K-R

(+)

SPK

-R(-)

LAB

EL

Ope

n10

.62V

0V4

Ope

n10

.62V

0V3

Ope

n10

.62V

0V2

Ope

n10

.62V

0V1

Dio

de C

heck

Run

SBY

Pin

Use

spe

aker

out

to te

st fo

r def

ectiv

e A

udio

Am

p IC

8801

Not

e: (N

orm

al, ½

Aud

io B

+)

P880

0

Q88

00A

mp

Mut

e

Aud

io B

+21

.3V

Pins

49-

52

Mut

ePi

n 25

Q88

00 (M

ute)

Act

ive

Low

. N

orm

al 3

.3V

Col

lect

or to

Pin

25

IC88

01

IC88

00A

mp

1.8V

(1)

Page 61: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

61

Mai

n JK

8700

Wire

less

Med

ia B

ox D

ongl

e Ja

ck (

Volta

ge a

nd D

iode

Ch

Mai

n JK

8700

Wire

less

Med

ia B

ox D

ongl

e Ja

ck (

Volta

ge a

nd D

iode

Ch e

ck)

eck)

Vol

tage

s w

ith W

irele

ss M

edia

Box

Don

gle

plug

ged

in. U

se M

edia

Box

Don

gle

side

to re

ad v

olta

ges.

R

emov

e co

ver,

(see

Wire

less

Med

ia B

ox tr

aini

ng m

anua

l for

det

ails

).*2

0.3V

Sw

itche

d fro

m Q

8701

Dra

in B

ack

side

of t

he b

oard

.Q

8701

turn

ed o

n by

Q87

00 fr

ont s

ide

of th

e bo

ard.

Q87

00 tu

rned

on

by M

icro

proc

esso

r pin

38.

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

Gnd

Gnd

0VG

nd19

-20

1.37

V3.

3V0.

67V

IR18

Gnd

Gnd

0VG

nd17

1.22

V3.

3V0V

Wire

less

_TX

16

1.17

V3.

3V0V

Wire

less

_RX

15

Gnd

Gnd

0VG

nd14

1.02

V3.

3V0V

I2C

_SD

A13

1.02

V3.

3V0V

I2C

_SC

L12

Gnd

Gnd

0VG

nd11

1.1V

3.3V

0Vn/

c10

Gnd

Gnd

0VG

nd9

1.2V

3.3V

0VIn

terr

upt

8

0.98

V0.

3V0V

Det

ect

7

0.98

V20

.3V

0V*2

0.3V

1-6

Dio

de C

heck

Run

ST

BY

Labe

lPi

n

JK87

00 "

MA

IN B

oard

" To

"W

irele

ss M

edia

Box

Don

gle"

JK87

00Ja

ck

1

Wire

less

Med

ia B

ox D

ongl

e m

ust b

e pl

ugge

d in

for

thes

e vo

ltage

s.

Page 62: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

62

FRO

NT

(IR,

INTE

LLIG

ENT

SEN

SOR

and

MO

VIN

G L

ED)

SEC

TIO

NFR

ON

T (I

R, IN

TELL

IGEN

T SE

NSO

R an

d M

OVI

NG

LED

) SE

CTI

ON

The

Inte

llige

nt S

enso

r and

IR b

oard

(loc

ated

on

the

botto

m le

ft as

vie

wed

from

the

rear

) con

tain

s th

e IR

(Inf

rare

d R

emot

e Se

nsor

) and

the

Inte

llige

nt S

enso

r. Th

is b

oard

als

o co

nnec

ts w

ith th

e So

ft To

uch

Key

Boa

rd a

nd th

e C

ente

r LG

Log

o bo

ard.

The

Cen

ter L

G L

ogo

light

s af

ter p

ower

on

and

the

pict

ure

appe

ars.

The

n di

ms

dow

n in

abo

ut 2

sec

onds

. At p

ower

off,

it d

oes

the

reve

rse.

The

IR b

oard

rece

ives

it o

pera

ting

B+

via

CO

N1

pin

6 (S

TBY

3.5V

).

The

IR (I

nfra

red)

rem

ote

rece

iver

can

be

mea

sure

d (1

.57V

) at p

in9

of c

onne

ctor

CO

N1

or P

8200

on

the

Mai

n bo

ard

in S

tand

-By.

Dur

ing

run

pin

9 re

ads

(1.5

4V).

The

IR p

ulse

s (1

.6V

p/p)

CO

N1

pin

9 ar

e se

nt to

P82

00 o

n th

e M

ain

boar

d an

d on

to th

e M

icro

proc

esso

r (IC

8101

) via

pin

16.

The

Inte

llige

nt S

enso

r com

mun

icat

es w

ith th

e M

icro

/Vid

eo P

roce

ssor

IC90

0 B

CM

Chi

p vi

a cl

ock

and

data

line

s SC

L1 a

nd S

DA

1 ar

rivin

g on

con

nect

or C

ON

1 fr

om P

8200

pin

s 1

and

2 on

the

Mai

n bo

ard.

The

Fron

t Pow

er L

EDs

are

cont

rolle

d by

thes

e sa

me

Clo

ck a

nd D

ata

lines

whi

ch c

omm

unic

ate

with

th

e LE

D D

river

IC U

1 on

the

Soft

Touc

h K

ey b

oard

.

The

Key

boa

rd is

rout

ed to

the

IR b

oard

via

CO

N2

and

outp

ut o

n C

ON

1 K

ey 1

and

Key

2 li

nes,

(K

ey 1

pin

4 a

nd K

ey 2

pin

5).

Arr

ivin

g at

P82

00 p

ins

4 an

d 5

onth

e M

ain

Boa

rd.

Then

to th

e M

icro

proc

esso

r 25

and

26 li

nes.

Page 63: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

63

Fron

t IR

Boar

d (C

onne

ctio

ns Id

entif

ied)

Fron

t IR

Boar

d (C

onne

ctio

ns Id

entif

ied)

J1To

Mai

n B

oard

p/n

EB

R64

9662

01

J3

To C

ente

rLo

go B

oard

J2To

Sof

t Tou

chK

ey B

oard

IR a

nd In

telli

gent

Se

nsor

boa

rd

(1)

Page 64: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

64

Fron

t Boa

rd C

onne

ctor

s C

ON

1, C

ON

2 an

d C

ON

3 Vo

ltage

and

Dio

de C

hFr

ont B

oard

Con

nect

ors

CO

N1,

CO

N2

and

CO

N3

Volta

ge a

nd D

iode

Ch e

ckeck

Dio

de M

ode

valu

es ta

ken

with

all

Con

nect

ors

Rem

oved

CO

N1

"Fro

nt IR

" to

P82

00 "

MA

IN"

Ope

n0V

0VLE

D_R

/BU

ZZ12

0.52

V3.

34V

0V+3

.3V_

Nor

mal

11G

ndG

ndG

ndG

nd10

Ope

n1.

6V1.

63V

(2) IR

9O

pen

0V0V

LED

_LO

GO

8G

ndG

ndG

ndG

nd7

1.24

V3.

47V

3.56

V3.

5V_S

T6

1.9V

3.3V

3.29

VK

EY 2

51.

9V3.

3V3.

32V

KEY

14

Gnd

Gnd

Gnd

Gnd

3O

pen

3.5V

3.56

V(1

) SDA

2O

pen

3.5V

3.56

V(1

) SCL

1

Dio

de

Che

ckR

un

STB

YLa

bel

Pin

1.9V

3.3V

3.29

V8

1.9V

3.3V

3.32

V7

Gnd

Gnd

Gnd

6O

pen

3.5V

3.56

V5

Ope

n3.

5V3.

56V

4G

ndG

ndG

nd3

Ope

n1.

63V

0V2

Ope

n3.

47V

3.56

V1

Dio

de C

heck

Run

ST

BY

Pin

Gnd

Gnd

Gnd

4O

pen

0.6V

1.36

V3

Gnd

Gnd

Gnd

21.

24V

3.47

V3.

56V

1D

iode

Che

ckR

un

STB

YPi

n

CO

N2

"Fro

nt IR

" to

“So

ft To

uch

Key

Boa

rd"

CO

N3

"Fro

nt IR

" to

“LG

Log

o B

oard

"

(1)

Clo

ck p

ulse

s on

ly p

rese

nt w

hen

Inte

lligen

t Sen

sor i

s

turn

ed o

n. (3

.7V

p/p

) (2

)IR

pul

ses

(1.6

V p

/p)

Page 65: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

65

INVI

SIBL

E SP

EAKE

R SE

CTI

ON

INVI

SIBL

E SP

EAKE

R SE

CTI

ON

The

42LE

5500

con

tain

s th

e In

visi

ble

Spea

ker s

yste

m.

The

Full

Ran

ge S

peak

ers

poin

t dow

nwar

d, s

o th

ere

is n

o fr

ont v

iew

able

spe

aker

gril

l or a

ir po

rts.

Spea

ker

p/n

EAB6

0961

501

Inst

alle

d

Top

View

Side

Vie

w

Fron

t Vie

w

Page 66: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

Oct

ober

20

10

LC

D T

V4

2LE

55

00

66

INTE

RCO

NN

ECT

DIA

GRA

M (

11 X

17

FOLD

OU

T SE

CTI

ON

)IN

TERC

ON

NEC

T D

IAG

RAM

(11

X 1

7 FO

LDO

UT

SEC

TIO

N)

This

sect

ion

show

s th

e 11

X17

fold

out t

hat

This

sect

ion

show

s th

e 11

X17

fold

out t

hat ’’ s

ava

ilabl

e in

the

Pape

r s

avai

labl

e in

the

Pape

r an

d Ad

obe

vers

ion

of th

e Tr

aini

ng M

anua

l.an

d Ad

obe

vers

ion

of th

e Tr

aini

ng M

anua

l.

The

Adob

e ve

rsio

n of

this

Trai

ning

Man

ual a

llows

the

view

er to

Th

e Ad

obe

vers

ion

of th

i s Tr

aini

ng M

anua

l allo

ws th

e vi

ewer

to

zoom

in a

nd o

ut m

akin

g re

adin

g of

the

smal

l tex

t eas

ier.

zoom

in a

nd o

ut m

akin

g re

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g of

the

smal

l tex

t eas

ier.

This

Powe

r Poi

nt s

hows

a g

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repr

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tatio

n o f

the

11 X

17

This

Powe

r Poi

nt s

hows

a g

raph

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repr

esen

tatio

n of

the

11 X

17

fold

out p

age

so c

larit

y is

limite

d.fo

ldou

t pag

e so

cla

rity

is lim

ited.

Page 67: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

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SC

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LG L

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Not

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artic

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are

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dim

mer

ba

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vel t

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as o

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brig

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ss s

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m, b

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re to

firs

t che

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stom

er’s

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u se

tting

for B

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ight

s. R

aise

the

perc

enta

ge a

nd s

ee if

the

over

all b

right

ness

retu

rns

to n

orm

al. I

f not

, 1st

: Che

ck th

e P-

DIM

leve

l, it

shou

ld ri

se w

ith th

e pe

rcen

tage

sho

wn

on s

cree

n. 1

00%

, 3.3

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ollo

w

the

P-D

IM s

igna

l all

the

way

to th

e In

vert

er.

2nd: T

urn

off

Loca

l Dim

min

g in

the

Cus

tom

ers

Men

u. If

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brig

htne

ss re

turn

s to

nor

mal

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min

e th

e si

gnal

s re

quire

d fo

r Loc

al D

imm

ing.

(S

IN, V

-SYN

C a

nd S

CLK

).

Driv

e Si

gnal

sto

LED

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cks

5 IR

E32

V p/

p 12

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Pane

l con

tain

s 12

LED

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lock

to tu

rn o

n, s

impl

e gr

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th

e pi

n pr

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the

13V

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ce is

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sent

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SMPS

TES

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To

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e P

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ply

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Dis

conn

ect P

8000

on

Mai

n bo

ard.

(A) J

ump

pins

9, 1

0, 1

1 or

12

(3.5

V) t

o pi

n 1.

(Tes

t Vol

tage

O

utpu

ts 1

2V, 2

4V to

Mai

n an

d 24

V to

bot

h In

verte

rs).

Rem

ove

AC

pow

er.

Leav

e th

e ju

mpe

r in

plac

e.

SMPS

TES

T 2:

(B) J

ump

pins

9,

10,

11

or 1

2 (3

.5V

) to

pin

18

(INV

-ON

). A

pply

AC

pow

er, t

he

Bac

klig

hts

shou

ld tu

rn o

n.

Not

e; If

ther

e is

a p

robl

em w

ith

a lo

ad o

n th

e In

verte

r you

can

Rem

ove

AC

and

Dis

conn

ect

P20

5 or

P20

4. W

hen

AC

is

reap

plie

d, th

e B

ackl

ight

LE

Ds

shou

ld tu

rn o

n fo

r abo

ut 6

se

cond

s an

d th

en s

hut o

ff.

J2 "

IR B

oard

" To

"So

ft To

uch

Key

Boa

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Pin

STB

YR

un

Dio

de1

3.45

V3.

36V

Ope

n2

0V1.

63V

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n3

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Gnd

Gnd

43.

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pen

6G

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ndG

nd7

3.45

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n8

3.45

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36V

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13.

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1.36

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Gnd

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3

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1A 250V

F103

1A 250V

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L601

L602

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1

D20

2

D20

3

D20

4

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05

P204

R14

9

RL101 RL1

02

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2

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7In

vert

er

Q20

3

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1

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9

T501

T101

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B

CEB

CE B

CE

B

Com

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nts

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deD

ashe

d Li

near

e H

ot G

roun

d

F101

-F10

3 H

ot G

ndS

tby

7.6V

Run

396

V

120V

LED

Po

wer

To th

e Pa

nel

SCLK

Pin

20

P201

3.76

V p/

p

V-SY

NC

Pin

16

P201

3.64

V p/

p

S-C

LK P

in 2

3 P2

013.

25V

p/p

Loca

l Dim

min

g O

n

S-C

LK P

in 2

3 P2

013.

25V

p/p

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l Dim

min

g O

ff

P800

0P2

01 "

SMPS

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00 "

MA

IN B

oard

"

Dio

de

Ope

n

Gnd

1.05

V

Ope

n

Ope

n

1.06

V

Ope

n

1.62

V

Ope

n

1.06

V

Gnd

1.24

V

Ope

n

Ope

n

Pin

Labe

lST

BY

Run

D

iode

Che

ck

24ER

RO

R0V

0V1.

45V

23L-

DIM

(SIN

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n

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DIM

0V0.

38V~

3.3V

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2112

V0V

11.4

3V0.

178V

20SC

LK0V

0.09

VO

pen

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V0V

11.4

3V0.

178V

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V-O

N0V

3.28

VO

pen

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V0V

11.4

3V0.

178V

16V-

SYN

C0V

0.02

VO

pen

13-1

5G

ndG

ndG

ndG

nd

9-12

3.5V

3.57

V3.

5VO

pen

5-8

Gnd

Gnd

Gnd

Gnd

2-4

24V

0V21

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1.10

V

1PW

R-O

N0V

3.36

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02V

Pin

Labe

lST

BY

Run

D

iode

Che

ck12

02.A

0V11

7.8V

Ope

n

11n/

cn/

cn/

cO

pen

1002

-1C

0V1V

~30V

Ope

n

902

-2C

0V1V

~30V

Ope

n

802

-3C

0V1V

~30V

Ope

n

7-6

n/c

n/c

n/c

Ope

n

501

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~30V

Ope

n

401

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0V1V

~30V

Ope

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302

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0V1V

~30V

Ope

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cn/

c0V

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101

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117.

8VO

pen

P204

"SM

PS"

To “

The

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l"

Pin

Labe

lST

BY

Run

D

iode

Che

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0V12

0VO

pen

11n/

cn/

cn/

cO

pen

1004

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0V1V

~30V

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n

904

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0V1V

~30V

Ope

n

804

-3C

0V1V

~30V

Ope

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7-6

n/c

n/c

n/c

Ope

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503

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403

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~30V

Ope

n

303

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0V1V

~30V

Ope

n

2n/

cn/

c0V

Ope

n

103

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120V

Ope

n

P205

"SM

PS"

To “

The

Pane

l"

Q90

1

IC60

2IC

606

IC60

4

Q70

2Q

701

IC82

00

IC84

01

IC84

00Q

8304

Q83

01

D83

07Q

8303

Q83

00

Q87

01IC

8700

Q82

05Q

8203

Q83

05Q

8302

D83

06

DS GQ20

0

G

S B

D

Q83

08D83

12

IC81

00

IC90

00

IC90

03IC

9001

Q80

00Q

8002

1 2

3

D83

09

EB

C

EB

C

EB

C

EB

C

EB

C

EB

C

EB

C

EB

C

EBC

EBC

EBC

EB

C

P204

P205

Thes

e dr

iver

s gr

ound

the

LED

blo

cks.

(12

Tota

l). If

the

120V

is p

rese

nt o

n Pi

ns 1

and

12

of P

204

and

P205

you

can

gro

und

thes

e te

st p

oint

s to

turn

on

a bl

ock.

1V (1

00 IR

E)30

V (0

IRE)

Gnd

Gnd

120V

120V

120V

120Vn/c

n/c

n/c

n/c

n/c

n/c

*1V

~30V

LE

D D

rive

*1V

~30V

LE

D D

rive

*1V

~30V

LE

D D

rive

*1V

~30V

LE

D D

rive

*Whi

te 1

00 IR

E to

Bla

ck 0

IRE

INVE

RTE

R S

ECTI

ON

OF

THE

SMPS

To S

peak

ers

See

the

Inve

rter

Sec

tion

Blo

w U

p on

the

Rig

ht

To T

he P

anel

Forc

ing

onA

Blo

ck o

f LED

s.

1V

DD

-33

3.5V

2V

LED

-RAN

GE

0V3

Gnd

Gnd

4+1

2VS

12.4

4VP

in 1

7-19

-21

P20

15

Gnd

Gnd

6+3

.5V

S3.

57V

Pin

9-1

2 P

201

1IN

V_O

N3.

28V

Pin

18

P20

12

Gnd

Gnd

3G

ndG

nd4

SC

LK0.

09V

Pin

20

P20

15

FB_S

TR_V

F1V

6P

-DM

11.

9VP

in 2

2 P

201

1E

rror

0VP

in 2

4 P

201

2(L

-DIM

) SIN

3.3V

Pin

23

P20

13

PO

WE

R_O

N3.

35V

Pin

1 P

201

4V

SY

NC

_IN

0VP

in 1

6 P

201

5G

ndG

nd6

Gnd

Gnd

You

can

also

thes

e ea

ch o

f the

12

bloc

ks fu

nctio

nalit

y by

gro

undi

ng th

e dr

iver

out

put s

igna

ls. S

ee “

Forc

ing

on

a B

lock

of L

EDs

on th

e rig

ht.

Page 68: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

42LE

5500

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IN (F

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MA

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(+1.

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to D

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Q87

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irele

ss P

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ulat

orP

inR

egul

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orP

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ON

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trol 2

nd D

river

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gle

Out

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rns

on Q

8701

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nd)

[1]

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)[1

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(Gnd

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0.67

9VB

0.66

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26V

(Out

)[2

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[2]

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ener

ator

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WR

On/

Off2

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3.36

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WR

On/

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[6]

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witc

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ongl

e In

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rns

on Q

8701

[1]

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ut)

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11.8

V (I

n)B

0.0V

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nd)

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ut)

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11.7

VG

1.8V

(Ena

ble)

C24

V[3

]3.

3V (O

ut)

[9]

2.38

V[9

]0V

(Gnd

)D

11.8

V (O

ut)

EG

nd[1

0]3.

36V

(PW

R O

n/O

ff1 C

tl)IC

8007

Pow

er D

et G

enIC

8903

(+3.

3V_M

EM

C)

[10]

1.13

VIC

8000

5V R

egul

ator

Pin

(+12

V a

nd +

3.5V

)P

inR

egul

ator

[11]

0V (G

nd)

Q80

05IN

V_O

NQ

8800

AM

P_M

UTE

Pin

for U

SB

IC80

03 (+

5V_N

OR

MA

L)[1

]0V

(Gnd

)[1

]0V

(Gnd

)[1

2]0V

(Gnd

)P

inD

river

Pin

Pin

25

IC88

01[1

]11

.79V

(In)

Pin

Reg

ulat

or[2

]3.

6V (I

n)[2

]11

.8V

(In)

[13]

0V (G

nd)

B0V

(IN

V O

N) E

nB

0V[2

]5V

(Out

)[1

]0V

(Gnd

)[3

]3.

5V (O

ut)

[3]

0V (G

nd)

[14]

7.7V

C3.

1V (O

ut)

C3.

336V

[3]

5V (O

ut)

[2]

11.8

V (I

n)[4

]0.

8V[1

5]7.

7V (H

VD

D)

EG

ndE

Gnd

[4]

10.5

V[3

]0V

(Gnd

)IC

8008

Pow

er D

et G

en[5

]0.

8V[1

6]0V

(Gnd

)[5

]3.

3V[4

]0.

8VP

in(+

24V

)[6

]3.

36V

(PW

R O

n/O

ff2 C

tl)Q

8200

IR B

uffe

rD

9101

VG

H/V

DD

[6]

0.8V

[5]

0.86

V[1

]0V

(Gnd

)[7

]3.

3V (O

ut)

IC93

00R

eset

for

Pin

2nd

Pin

Rec

tifye

r[7

]4.

99V

[6]

3.37

V (P

WR

On/

Off2

Ctl)

[2]

3.6V

(In)

[8]

3.3V

(Out

)P

inLG

5111

B0.

02V

A15

.4V

[8]

0V (G

nd)

[7]

5V (I

n)[3

]3.

7V (O

ut)

[1]

3.32

V (I

n)C

3.4V

AC

22.2

V [8

]5V

(In)

IC91

00P

-GA

MM

A[2

]0V

(Gnd

)E

Gnd

C27

.4V

(VG

H)

IC80

01D

1.2V

and

A1.

2VIC

8800

(+1.

8V_A

MP

)P

inC

hip

[3]

3.34

V (O

ut)

Pin

Reg

ulat

orIC

8004

A2.

5V R

egul

ator

Pin

Reg

ulat

or[1

]3.

3VQ

8201

IR B

uffe

rD

9102

VG

L/V

CC

[1]

0V (G

nd)

Pin

for U

SB

[1]

0V (G

nd)

[2]

0V (G

nd)

IC93

02(1

.8V

_L/D

imm

ing)

Pin

1st

Pin

Rec

tifye

r[2

]3.

3V[1

]n/

c[2

]1.

8V (O

ut)

[3]

3.3V

(In)

Pin

Reg

ulat

orB

0VA

(-5V

VG

L)[3

]0V

(Gnd

)[2

]3.

26V

(In)

[3]

3.29

5V (I

n)[4

]0V

(Gnd

)[1

]0V

(Gnd

)C

3.3V

AC

(-1.

9V)

[4]

1.2V

[3]

3.26

V (I

n)[5

]6.

8V[2

]11

.8V

(In)

EG

ndC

0V[5

]3.

3V[4

]n/

cIC

8901

(+1.

5V_M

EM

C)

[6]

6.8V

[3]

0V (G

nd)

[6]

n/c

[5]

n/c

Pin

Reg

ulat

or[7

]15

.3V

[4]

0.8V

Q83

06H

DM

I [7

]4.

46V

[6]

2.55

V (O

ut)

[1]

0V (G

nd)

[8]

15.3

V[5

]0.

76V

Pin

Det

[8]

3.3V

[7]

0.8V

[2]

1.5V

(Out

)[9

]n/

c[6

]3.

34V

(PW

R O

n/O

ff2 C

tl)B

0V[9

]3.

3V [8

]0V

(Gnd

)[3

]3.

3V (I

n)[1

0]13

.47V

[7]

1.8V

(In)

C3.

3V[1

0]3.

3V[1

1]12

.75V

[8]

1.8V

(In)

EG

nd[1

1]1.

2V[1

2]11

.8V

[12]

Gnd

[13]

10V

Q80

01P

AN

EL_

VC

CQ

8307

HD

MI

[13]

3.3V

[14]

5.96

VP

inC

ontro

l 1st

Driv

erP

inD

et[1

4]0.

8V[1

5]4.

06V

B0V

B0V

[16]

15.3

VC

0.68

VC

4.18

V[1

7]0V

EG

ndE

Gnd

[18]

2.96

V[1

9]2.

33V

[20]

3.3V

(In)

42LE

5500

MA

IN (B

AC

K S

IDE)

SIM

ICO

ND

UC

TOR

S

IC60

2D

1.8V

IC82

00R

S23

2IC

8401

ED

ID D

ata

IC93

03E

EP

RO

MQ

8000

RL_

ON

(PW

R_O

n)Q

8303

, 4, 5

HD

MI 3

Pin

Reg

ulat

orP

inR

outin

gP

inP

CP

info

r LG

5111

Pin

1st D

river

Pin

Det

[1]

0V (G

nd)

[1]

0V[1

]0V

(Gnd

)[1

]0V

(Gnd

)B

0.66

VB

0V[2

]3.

29V

(PW

R O

n/O

ff1 C

tl)[2

]0V

[2]

0V (G

nd)

[2]

0V (G

nd)

C0V

C4.

2V[3

]0.

9V (D

DR

_VTT

)[3

]0V

[3]

0V (G

nd)

[3]

0V (G

nd)

EG

ndE

Gnd

[4]

0.93

V[4

]0V

[4]

0V (G

nd)

[4]

0V (G

nd)

[5]

1.83

V[5

]0V

[5]

0.7V

[5]

3.37

VQ

8002

PW

R_O

NQ

8308

CE

C R

emot

e[6

]3.

38V

(In)

[6]

(-5.

47V

)[6

]4.

1V[6

]3.

37V

Pin

Sw

itch

Pin

HD

MI C

EC

[7]

1.8V

(Out

)[7

]n/

c (5

.59V

)[7

]4.

5V[7

]3.

34V

[1]

3.36

V (I

n)[B

]2.

72V

[8]

0.91

V (D

DR

_VTT

) [8

]n/

c (0

V)

[8]

4.5V

(In)

[8]

3.37

V (I

n)[2

]0V

[G]

2.73

V[9

]n/

c (3

.3V

)[3

]3.

3V (O

ut)

[S]

3.27

VIC

8100

EE

PR

OM

[10]

n/c

(0.2

V)

IC87

00W

irele

ssQ

200

(1.8

V_H

DM

I)[D

]3.

37V

Pin

Mic

ro[1

1]n/

c (3

.3V

)P

inB

uffe

rP

inS

witc

hQ

8203

IR W

irele

ss P

ass

D83

123.

5V P

ull U

p[1

]0V

(Gnd

)[1

2]3.

35V

[1]

0V (3

.3V

Don

gle

In)

S1.

83V

(Out

)P

in2n

d D

river

Pin

HD

MI C

EC

[2]

0V (G

nd)

[13]

0V[2

]3.

3V (0

.3V

Don

gle

In)

G3.

35V

(PW

R O

n/O

ff2 C

tl)B

0VA

10V

[3]

0V (G

nd)

[14]

(-5.

47V

)[3

]n/

cD

1.83

V (I

n)C

3.3V

C3.

26V

[4]

0V (G

nd)

[15]

0V (G

nd)

[4]

n/c

EG

ndA

23.

2V[5

]3.

37V

[16]

3.37

V[5

]n/

cQ

701

Tune

r SIF

[6]

3.37

V[6

]G

ndP

in(S

ound

) Buf

fer

D83

06, 7

, 95V

Pul

l Up

Rou

ting

[7]

0V (G

nd)

IC84

00 R

GB

[7]

Gnd

B0.

16V

Q82

05IR

Wire

less

Pas

sP

inH

DM

I SC

L/S

DA

[8]

3.37

VP

inH

/V S

ync

[8]

Gnd

CG

ndP

in1s

t Driv

erA

15.

04V

[1]

1.9V

[9]

n/c

E0.

83V

B0.

6VC

4.58

V[2

]1.

9V[1

0]0.

02V

C0V

A2

0V[3

]4.

4V[1

1]0V

Q70

2Tu

ner V

ideo

EG

nd[4

]0V

[12]

3.3V

Pin

(Ana

log)

Buf

fer

[5]

0.9V

[13]

0V (3

.3V

Don

gle

In)

B2.

05V

Q83

00, 2

HD

MI 2

[6]

n/c

(4.5

V)

[14]

3.3V

C2.

75V

Pin

Det

[7]

0V (G

nd)

[15]

3.3V

EG

ndB

4.2V

[8]

n/c

(4.5

V)

[16]

3.3V

C0V

[9]

n/c

(1.9

V)

Q90

1FL

AS

H_W

PE

Gnd

[10]

n/c

(1.9

V)

IC90

00S

eria

l Fla

shP

info

r IC

901

[11]

n/c

(4.5

V)

Pin

T-C

ON

B0V

(Fla

sh_W

P)

[12]

0.9V

[1]

0.06

VC

3.36

V[1

3]0.

9V[2

]0.

67V

EG

nd[1

4]5V

[3]

3.3V

(In)

[4]

0V (G

nd)

[5]

0V[6

]0.

34V

[7]

3.31

V (I

n)

[8]

3.34

V (I

n)

Page 69: h t er 42LE5500 O d h is P - go-gddq. · PDF file1080P Direct View LCD Training P u bl is h e d O c t o b er 8 t h, 2 0 1 0. ... //lge.webex.com LG CS Academy 32LG40, 32LH30, 37LH55,

42LE

5500

42

LE55

00

Con

clus

ion

Con

clus

ion

Page

Page

This

conc

lude

s th

e 42

LE55

00

trai

ning

ses

sion.

Dire

ct V

iew

LCD

Dire

ct V

iew

LCD