combo funai emerson sylvania chasis-lcd-a1504

15″/20″ COLOR LCD TELEVISION

LCD-A1504LCD-A2004

The LCD panel is manufactured to provide many years of useful life.Occasionally a few non active pixels may appear as a tiny spec of color.This is not to be considered a defect in the LCD screen.

1-1 L4100SP

SPECIFICATIONS

<TUNER> ANT. Input ------------------- 80 dBµV, Video: PAL 87.5%, Audio: 30 kHz dev (1 kHz Sin)

Test Input Signal----------- 400Hz 30% modulation

<LCD PANEL>

<VIDEO>

<AUDIO> All items are measured across 8Ω load at speaker output terminal with L.P.F.

Note:Nominal specifications represent the design specifications. All units should be able to approximate these. Some will exceed and some may drop slightly below these specifications. Limit specifications represent the absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications.

Description Condition Unit Nominal Limit

1. Intermediate Freq. PictureSound

MHzMHz

45.7541.25

--

2. Color Killer Sens. CH-3 dBµV 20 23

3. AFT Pull In Range(10mV input)

– MHz ±1.6 ±0.7


1. Number of Pixels HorizontalVertical

pixelspixels

640 x 3480

--

2. Brightness cd/m2 450 -

3. Response Time - msec 16 -

4. Support Color - - 16mil.(8bit) -

5. Viewing Angle HorizontalVertical

°°

-85 to 85-85 to 70

-


1. Over Scan HorizontalVertical

%%

8.56.5

10±510±5

2. Color Temperature -xy

°K 85000.290.30

-0.29±0.030.30±0.03

3. Resolution HorizontalVertical

lineline

400350

<250<300


1. Audio Output Power 10% THD: Lch/Rch W 1.0/1.0 0.8/0.8

2. Audio Distortion 500mW: Lch/Rch % 1.0/1.0 <3

3. Audio Freq. Response -6dB: Lch-6dB: Rch

HzHz

50 to 12K50 to 12K

--

4. Audio S/N RFVIDEO 1VIDEO 2

dBdBdB

606060

454545

4-3 L4100DC

Wiring Diagram

Fig. D3

T402CN101A CN102A

CN31A

CN31B

CN801CN802

To Speaker

To LCD Module Assembly


Function CBA

Main CBA

LCD Main CBA

To Speaker

CN103A

CN101B

CN320A CN321A

CN102B CN103B

T401

4-6 L4200DC

Cable Wiring Diagram

Fig. D3

T1402CN101A CN102A

CN53

CN405CN1401

CN51

CN51A

CN801CN802

To Speaker


Function CBAIR Sensor CBA

Inverter CBA Main CBA

LCD Main CBA

To Speaker

CN103A

CN101B

CN310A CN311A CN313A

CN102B CN103B

T1401

T1404To LCD ModuleAssembly

To LCD ModuleAssembly

T1403

5-1 L4100INT

HOW TO INITIALIZE THE LCD TELEVISION

To put the program back at the factory-default, initialize the LCD television as the following procedure.

How to initialize the LCD television:1. Turn the power on. (Use main power on the TV

unit.)

2. To enter the service mode, press [STANDBY], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds.

- To cancel the service mode, press [STANDBY] button on the remote control.

3. To initialize the LCD television, press “DISPLAY” button on the remote control unit.

4. Confirm "FF" indication on the upper right of the screen.

6-1 L4100EA

ELECTRICAL ADJUSTMENT INSTRUCTIONSGeneral Note: “CBA” is abbreviation for “Circuit Board Assem-bly.”NOTE:

Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available.

Test Equipment Required1. DC Voltmeter

2. Pattern Generator

3. Color Analyzer

How to Set up the Service mode:1. Turn the power on. (Use main power on the TV

unit.)

2. Press [STANDBY], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds.

- To cancel the service mode, press [STANDBY] button on the remote control.

1. Initial SettingGeneralEnter the Service mode.

Set the each initial data as shown on table 1 below.

Table 1: Initial Data

ITEMBUTTON

(on the remote control)

DATA VALUE

LCD-A1504

LCD-A2004

BRT(PAL)

MENU → 1

130 134 CNT(PAL) 174 174 CLR-R(PAL) 78 74 CLR-B(PAL) 78 74 SHR(PAL) 143 143 S-BRT(PAL)

MENU → 2

130 134 S-CNT(PAL) 174 174 S-CLR-R(PAL) 78 74 S-CLR-B(PAL) 78 74 S-SHR(PAL) 143 143 C-BRT(PAL)

MENU → 3

134 134 C-CNT(PAL) 122 132 C-CLR-R(PAL) 156 154 C-CLR-B(PAL) 156 154 C-SHR(PAL) 143 143 BRT(SECAM)

MENU → 4

130 134 CNT(SECAM) 174 174 CLR-R(SECAM) 78 74 CLR-B(SECAM) 78 74 SHR(SECAM) 143 143 S-BRT(SECAM)

MENU → 5

130 134 S-CNT(SECAM) 174 174 S-CLR-R(SECAM) 78 74 S-CLR-B(SECAM) 78 74 S-SHR(SECAM) 143 143 C-BRT(SECAM)

MENU → 6

134 134 C-CNT(SECAM) 122 132 C-CLR-R(SECAM) 156 154 C-CLR-B(SECAM) 156 154 C-SHR(SECAM) 143 143 BRT(NTSC)

MENU → 7

134 134 CNT(NTSC) 172 174 CLR-R(NTSC) 78 70 CLR-B(NTSC) 78 70 TNT(NTSC) 148 148 SHR(NTSC) 143 143 S-BRT(NTSC)

MENU → 8

134 134 S-CNT(NTSC) 172 174 S-CLR-R(NTSC) 78 70 S-CLR-B(NTSC) 78 70 S-TNT(NTSC) 148 148 S-SHR(NTSC) 143 143

6-2 L4100EA

2. +B AdjustmentPurpose: To obtain correct operation.

Symptom of Misadjustment: The picture is dark and

the unit does not operate correctly.

Note: TP401(+B), TP300(GND), VR649 --- Main CBA

1. Connect DC Volt Meter to TP401 and TP300(GND).

2. Adjust VR649 so that the voltage of TP401 becomes +13.0±0.3V DC [LCD-A1504] or +21.0±0.3V DC [LCD-A2004].

3. Flicker AdjustmentAdjustment Point: R977 (LCD Main CBA)

1. Enter the Service mode.

2. Press “2” button on the remote control unit.The following screen appears.

3. If Flicker Adjustment is not fit, the screen become the following.

4. Adjust R977 so that flash stops.

C-BRT(NTSC)

MENU → 9

134 134 C-CNT(NTSC) 122 132 C-CLR-R(NTSC) 156 154 C-CLR-B(NTSC) 156 154 C-TNT(NTSC) 148 148 C-SHR(NTSC) 143 143BRIGHT 0 0 0NORMAL 0 40 65DARK 0 95 98 COR(C/D/S-1) VOL. p → 1 131 131 COG(C/D/S-1) VOL. p → 2 131 131 COB(C/D/S-1) VOL. p → 3 131 131 DR(C/D/S-1) VOL. p → 4 145 145 DG(C/D/S-1) VOL. p → 5 143 143 DB(C/D/S-1) VOL. p → 6 140 140 SBR(C/D/S-1) VOL. p → 7 0 0 SBB(C/D/S-1) VOL. p → 9 0 0 C-COR(C/D/S-2) VOL. p → 1 131 131 C-COG(C/D/S-2) VOL. p → 2 131 131 C-COB(C/D/S-2) VOL. p → 3 131 131 C-DR(C/D/S-2) VOL. p → 4 145 145 C-DG(C/D/S-2) VOL. p → 5 143 143 C-DB(C/D/S-2) VOL. p → 6 140 140 C-SBR(C/D/S-2) VOL. p → 7 0 0 C-SBB(C/D/S-2) VOL. p → 9 0 07F

VOL. p

FF FFLAST POWER OFF OFFSYSTEM PAL-BG PAL-BGNCM ON ONASPECT OFF OFFRUSSIAN OFF OFF

Test Point Adj. Point

TP401 (+B)TP300 (GND)

VR649

M. EQ. Spec.

DC Voltmeter +13.0±0.3V DC [LCD-A1504]+21.0±0.3V DC [LCD-A2004]

ITEMBUTTON

(on the remote control)

DATA VALUE

LCD-A1504

LCD-A2004

R977

LCD Main CBA

FLASH(Go and Off)

6-3 L4100EA

The following adjustment normally are not attempted in the field. Only when replacing the LCD Panel then adjust as a preparation.

4. White Balance AdjustmentPurpose: To mix red, green and blue beams correctlyfor pure white. Symptom of Misadjustment: White becomes bluishor reddish.

1. Operate the unit for more than 20 minutes.

2. Input the White Purity (APL 80% or APL 40%).

3. Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.Note: The optical receptor must be set perpendicularly to the LCD Panel surface.

4. [RF/AV2(CVBS)]Enter the Service mode. Press “VOL p ” button on the remote control unit and select “C/D/S-1” mode. [AV1(RGB)]Enter the Service mode. Press “VOL p ” button on the remote control unit and select “C/D/S-2” mode.

5. [RF/AV2(CVBS)]When “x” value and “y” value are not within specification, adjust “DB (C/D/S-1)” or “DR (C/D/S-1)”. Refer to “1. Initial Setting.”Note: “DB(C/D/S1)” or “DR(C/D/S1)” must be adjusted within ±10.[AV1(RGB)]When “x” value and “y” value are not within specification, adjust “C-DB(C/D/S-2)” or “C-DR(C/D/S-2)”. Refer to “1. Initial Setting.”Note: “C-DB(C/D/S-2)” or “C-DR(C/D/S-2)” must be adjusted within ±10.

6. Turn the power off and on again. (Main power button on the TV unit.)

Test Point Adj. Point Mode Input

ScreenVOL. pbuttons

[RF/AV2(CVBS)] C/D/S-1[AV1(RGB)] C/D/S-2

White Purity (APL 80%)

or(APL 40%)

M. EQ. Spec.

Pattern Generator, Color analyzer

x: 260 to 320,y: 270 to 330

Figure

Color Analyzer

It carries out in a darkroom.

L = 50 cm

Perpendicularity

INPUT: WHITE 80%

7-1

System Control Block Diagram

L4100BLS

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-MU

TE

SP

-MU

TE

DE

EM

PH

AS

IS

SO

UN

DS

ELE

CT

A/D

CO

NV

ER

TE

RS

CA

RT

DS

PIN

PU

T S

ELE

CT

SC

AR

TP

RE

SC

ALE

D/A

CO

NV

ER

TE

RV

OLU

ME

SC

AR

T1

OU

TP

UT

SE

LEC

TS

CA

RT

1C

HA

NN

EL

MAT

RIX

QU

AS

I-P

EA

KC

HA

NN

EL

MAT

RIX I2

C R

EA

DR

EG

IST

ER

30 31

QU

AS

I-P

EA

KD

ET

EC

TOR

LOU

D S

PE

AK

ER

CH

AN

NE

L M

ATR

IX

AV

C

D/A

CO

NV

ER

TE

R

STA

ND

ER

DA

ND

SO

UN

DD

ET

EC

TIO

N

7-4 L4100BLLCD

LCD Block Diagram ( A )

LC

D M

AIN

CB

A U

NIT

VID

EO

SIG

NA

L

IC30

1(L

CD

DR

IVE

/ S

IGN

AL

PR

OC

ES

S)

TO IF/V

IDE

OB

LOC

KD

IAG

RA

MC

N10

3A

CN

103B

182

181

180

179

175

174

173

OD

DIN

V

EV

EN

INV

ST

H1

PO

L

ST

V1

CLK

V

CLK

H1

LCD

MO

DU

LE VR

EF

(4)

25

VR

EF

(0)

29V

RE

F(1

)28

VR

EF

(2)

27V

RE

F(3

)26

VR

EF

(7)

21

VR

EF

(5)

23V

RE

F(6

)22

VR

EF

(8)

20V

RE

F(9

)19

104

105

103

VC

OM

35V

CO

M36

PAN

EL+

10.8

V

R97

7V

CO

M

CN

320A

169

168

167

166

165

161

160

159

158

155

154

153

152

151

150

146

145

LCD

MO

DU

LE

TP

322

TP

323

TP

318

TP

319

TP

320

TP

321

143

142

141

140

139

135

134

133

132

131

130

129

128

127

123

122

121

120

119

116

115

114

113

106

TP

316

TP

317

TP

312

TP

313

TP

314

TP

315

CN

321A

OR

(3)

32O

R(4

)31

OR

(5)

30

OR

(0)

35O

R(1

)34

OR

(2)

33

OG

(3)

25O

G(4

)24

OG

(5)

23

OR

(0)

28O

G(1

)27

OG

(2)

26

OB

(3)

18O

B(4

)17

OB

(5)

16

OB

(0)

21O

B(1

)20

OB

(2)

19

ER

(3)

5E

R(4

)4

ER

(5)

3

ER

(0)

8E

R(1

)7

ER

(2)

6

EG

(3)

47E

G(4

)46

EG

(5)

45

EG

(0)

50E

G(1

)49

EG

(2)

48

EB

(3)

40E

B(4

)39

EB

(5)

38

EB

(0)

43E

B(1

)42

EB

(2)

41

CV

BS

18

CV

BS

29

S-V

IDE

O-C

5S

-VID

EO

-Y6

VID

EO

-Pb

3

VID

EO

-Pr

1V

IDE

O-Y

2

VC

OM

3V

CO

M4C

N32

1A

8485

X30

154

MH

zXIN

XO

UT

CLE

AR

15C

LKV

14V

CO

MC

ON

TR

OL

Q97

1IC

981,

CLE

AR

91 95 96 98

ST

V1

13

LP44C

N32

0A

PO

L43

HM

S1-

E10

CLK

H12

ST

H1

42H

MS

1-O

14

WF

11W

F10

WF

12W

F9

VID

EO

SIG

NA

LP

RO

CE

SS

NT

SC

/PA

L S

EPA

RAT

ION

BU

RS

T

LOC

KE

D

OU

TP

UT

CO

NT

RO

L

CH

RO

MA

D

EC

OD

ER

SE

CA

M P

DM

RC

O

PAN

EL

SIG

NA

LP

RO

CE

SS

TV

SIG

NA

LP

RO

CE

SS

INP

UT

CO

NT

RO

L

CV

BS

YC

BGRA

/D

A/D

A/D

A/D

3344 1342 4021 31

LP97 18

7

WF

14W

F13

Co

mp

aris

on

Ch

art

of

Mo

del

s &

Mar

ksM

od

elM

ark

LCD

-A15

04LC

D-A

2004

A B

BGR BGR

R90

5R

907

R90

1R

904

R90

2

R99

7

7-5

LCD Block Diagram ( B )

L4200BLLCD

CN

310A

LC

D M

AIN

CB

A U

NIT

VID

EO

SIG

NA

L

IC30

1(L

CD

DR

IVE

/ S

IGN

AL

PR

OC

ES

S)

TO IF/V

IDE

OB

LOC

KD

IAG

RA

MC

N10

3A

CN

103B

182

181

180

179

175

174

173

CN

311A

OD

DIN

V

EV

EN

INV

ST

H1

PO

LLP C

LKH

1

LCD

MO

DU

LE VR

EF

(4)

10

VR

EF

(0)

14V

RE

F(1

)13

VR

EF

(2)

12V

RE

F(3

)11

VR

EF

(7)

6

VR

EF

(5)

8V

RE

F(6

)7

VR

EF

(8)

5V

RE

F(9

)4

104

105

OR

(0)

29O

R(1

)28

OR

(2)

27O

R(3

)26

OR

(4)

25O

R(5

)24

OG

(0)

22O

G(1

)21

OG

(2)

20O

G(3

)19

OG

(4)

18O

G(5

)17

OB

(0)

15O

B(1

)14

OB

(2)

13O

B(3

)12

OB

(4)

11O

B(5

)10

ER

(0)

39E

R(1

)38

ER

(2)

37E

R(3

)36

ER

(4)

35E

R(5

)34

EG

(0)

32E

G(1

)31

EG

(2)

30E

G(3

)29

EG

(4)

28E

G(5

)27

EB

(0)

25E

B(1

)24

EB

(2)

23E

B(3

)22

EB

(4)

21E

B(5

)20

169

168

167

166

165

161

160

159

158

155

154

153

152

151

150

146

145

LCD

MO

DU

LE

TP

322

TP

323

TP

318

TP

319

TP

320

TP

321

143

142

141

140

139

135

134

133

132

131

130

129

128

127

123

122

121

120

119

116

115

114

113

106

TP

316

TP

317

TP

312

TP

313

TP

314

TP

315

CV

BS

18

CV

BS

29

S-V

IDE

O-C

5S

-VID

EO

-Y6

VID

EO

-Pb

3

VID

EO

-Pr

1V

IDE

O-Y

2

VC

OM

17V

CO

M18

97 95 96

ST

V1

CLK

V10

3

CN

311A

CN

313A

ST

V1

14C

LKV

16V

CO

M1

VC

OM

2

98

EV

EN

INV

2

OD

DIN

V8

CLK

H5C

N31

0A

ST

H1

37P

OL

38LP

39

WF

14W

F13

WF

11W

F10

WF

12W

F9

PAN

EL+

10.8

V

R97

7V

CO

MV

CO

MC

ON

TR

OL

Q97

1IC

981,

VID

EO

SIG

NA

LP

RO

CE

SS

NT

SC

/PA

L S

EPA

RAT

ION

BU

RS

T

LOC

KE

D

OU

TP

UT

CO

NT

RO

L

CH

RO

MA

D

EC

OD

ER

SE

CA

M P

DM

RC

O

PAN

EL

SIG

NA

LP

RO

CE

SS

TV

SIG

NA

LP

RO

CE

SS

INP

UT

CO

NT

RO

L

CV

BS

YC

BGRA

/D

A/D

A/D

A/D

8485

X30

154

MH

zXIN

XO

UT

3344 1342 4021 31 91

Co

mp

aris

on

Ch

art

of

Mo

del

s &

Mar

ksM

od

elM

ark

LCD

-A15

04LC

D-A

2004

A B

BGR BGR

R90

5R

907

R90

1R

904

R90

2

R99

4

7-6 L4100BLP

Power Supply Block DiagramC

AU

TIO

N !

FO

R C

ON

TIN

UE

D P

RO

TE

CT

ION

AG

AIN

ST

FIR

E H

AZ

AR

D,

RE

PLA

CE

ON

LY W

ITH

TH

E S

AM

E T

YP

E T

4A

, 25

0 V

FU

SE

.

NO

TE

: T

he v

olta

ge fo

r pa

rts

in h

ot c

ircui

t is

mea

sure

d us

ing

hot G

ND

as

a co

mm

on te

rmin

al.

CA

UT

ION

!F

ixed

vol

tage

(or

Aut

o vo

ltage

sel

ecta

ble

) po

wer

sup

ply

circ

uit i

s us

ed in

this

uni

t.If

Mai

n F

use

(F60

1) is

blo

wn,

che

ck to

see

that

all

com

pone

nts

in th

e po

wer

sup

ply

circ

uit a

re n

ot d

efec

tive

befo

re y

ou c

onne

ct th

e A

C p

lug

to th

e A

C p

ower

sup

ply.

Oth

erw

ise

it m

ay c

ause

som

e co

mpo

nent

s in

the

pow

er s

uppl

y ci

rcui

t to

fail.

LIN

EF

ILT

ER

L601

AC

601

AC

CO

RD

BR

IDG

ER

EC

TIF

IER

D60

5

HO

TC

OL

D

T60

1

119121415167

4 3

1 2

MA

IN C

BA

CN

101A

Q50

5Q50

4

Q50

3

HO

T C

IRC

UIT

. BE

CA

RE

FU

L.

5 3 2

Q51

1

Q50

2

Q50

1

RE

G+

5V

AL+

3.3V

AL+

8V

PR

OT

EC

T-1

+12

V

AL+

33V

P-O

N-H

Q50

6

Q63

3

PR

OT

EC

T-2

IC63

1+

5VR

EG

1013

IC50

4+

3.3V

RE

G

IC60

1E

RR

OR

VO

LTA

GE

DE

TQ

507

Q51

2

VR

649

TP

401

+B

Q51

0

41 2 75 6

PR

OT

EC

T-3

CN

103A

AL+

5V

P-O

N-H

2

AL+

13V

Q50

8

CN

101B

PAN

EL+2

5V7

7PA

NEL

+3.3

V4

4PA

NEL

+10.

8V1

1

PAN

EL+

25V

PAN

EL+

3.3V

LC

D M

AIN

CB

A U

NIT

PAN

EL-6

V10

10PA

NE

L-6V

PAN

EL+

10.8

V

CN

103B

AL+

8V14

14A

L+5V

1313

AL+

3.3V

1111

RE

G+

3.3V

AL+

5V

AL+

8V15

15

RE

G+

1.8V

AL+

3.3V

IC10

1+

3.3V

RE

G

IC10

2+

1.8V

RE

G

Q51

1

SW

ITC

HIN

GR

EG

ULA

TOR

IC60

2

+B

AD

J

P-2

5V-O

N

AL+

21V

TO L

CD

BA

CK

LIG

HT

BLO

CK

DIA

GR

AM

(A

)

TO L

CD

BA

CK

LIG

HT

BLO

CK

DIA

GR

AM

(B

)

4 3

1 2

+8V

RE

G

IC50

3

IC60

3E

RR

OR

VO

LTA

GE

DE

T

IC50

7+

5VR

EG

INV

ER

TE

R C

BA

AL+

21V

33

AL+

21V

22

AL+

21V

11

AL+

21V

44

CN

405

CN

1401

P-O

N-L

B

Co

mp

aris

on

Ch

art

of

Mo

del

s &

Mar

ksM

od

elM

ark

LCD

-A15

04LC

D-A

2004

A B

B

B

B

A

A

F60

1T

4A L

250

V

Q60

3

Q60

2

D50

5S

HU

NT

RE

GU

LAT

OR

(

(

D52

5S

HU

NT

RE

GU

LAT

OR

((

D64

9S

HU

NT

RE

GU

LAT

OR

((

7-7 L4100BLLB

LCD Backlight Block Diagram ( A )

T40

1

3 4

BA

CK

LIG

HT

CN

401

2 1

2 5 1 610978

OV

ER

VO

LTA

GE

PR

OT

EC

TOR

Q42

3,Q

427

OV

ER

VO

LTA

GE

PR

OT

EC

TOR

Q42

4,Q

428

T40

2

3 4 2 5 1 610978

BA

CK

LIG

HT

CN

402

2 1

SW

ITC

HIN

G

Q42

5,Q

426

SW

ITC

HIN

G

Q42

1,Q

422

OV

ER

CU

RR

EN

TP

RO

TE

CTO

R

Q46

2

PW

MC

ON

TOR

OL

Q46

8B

AC

KLI

GH

T-A

DJ

OV

ER

VO

LTA

GE

PR

OT

EC

TOR

Q46

4

+

Q46

1

Q46

0

+12

VS

WIT

CH

ING

Q46

6

BA

CK

LIG

HT-

SW

SW

ITC

HIN

GB

AC

KLI

GH

T-O

N

Q46

9

PR

OT

EC

T-1

LC

D M

OD

UL

E

MA

IN C

BA

AL+

13V

Q46

3

TO PO

WE

R

SU

PP

LYB

LOC

KD

IAG

RA

M

SW

ITC

HIN

GB

AC

KLI

GH

T-O

N

Q46

7

Q47

1

Q47

0

TO SY

ST

EM

CO

NT

RO

LB

LOC

KD

IAG

RA

M

Co

mp

aris

on

Ch

art

of

Mo

del

s &

Mar

ksM

od

elM

ark

LCD

-A15

04LC

D-A

2004

A B

7-8

LCD Backlight Block Diagram ( B )

L4200BLLB

SW

/S

W C

TL

BA

CK

LIG

HT-

SW

RL1

401

Q14

05,

Q14

06

IC14

01 (

DC

-AC

INV

ER

TE

R C

ON

TR

OL)

Q14

03

Q14

02

VC

C

1 2

T14

01

CN

1402

LC

D M

OD

UL

EIN

VE

RT

ER

CB

A

BA

CK

LIG

HT-

AD

J

PR

OT

EC

T-1

SW

/S

W C

TL

Q14

07,

Q14

08

Q14

01

BA

CK

LIG

HT

BA

CK

LIG

HT

BA

CK

LIG

HT

BA

CK

LIG

HT

26 27 23 24 28 14 11 913 12

11516

+10

VR

EG

.

OU

TP

UT

LOG

IC1

OU

TP

UT

LOG

IC2

LOG

IC

OV

ER

VO

LTA

GE

PR

OT

EC

T

SLO

WS

TAR

T

OS

C

PW

M2

PW

M1

STA

ND

BY

PR

OT

EC

T

MO

DE

SW

4 5 7

OV

ER

VO

LTAG

EP

RO

TEC

TOR

Q14

10,1

411

OV

ER

VO

LTAG

EP

RO

TEC

TOR

Q14

12,1

413

T14

02C

N14

03

OV

ER

VO

LTAG

EP

RO

TEC

TOR

Q14

14,1

415

1 2

T14

03C

N14

04

OV

ER

VO

LTAG

EP

RO

TEC

TOR

Q14

16,1

417

OV

ER

VO

LTAG

EP

RO

TEC

TOR

Q14

18,1

419

T14

04C

N14

05

OV

ER

VO

LTAG

EP

RO

TEC

TOR

Q14

20,1

421

1 2

10

9 7

3 1 64 2 5

10 8 9 7

3 1 64 2 5

10 8 9 7

3 1 64 2 5

10 8 9 7

3 1 64 2 5

10 8

TO PO

WE

RS

UP

PLY

BLO

CK

DIA

GR

AM

AL+

21V

P-O

N-H

1 2

IC14

02(A

MP

)

IC14

03(A

MP

)

17

26

53

+-

+-+-

+-

+-

+-

8

1314

9

1012

17

26

35

TO SY

ST

EM

CO

NT

RO

LB

LOC

KD

IAG

RA

M

Co

mp

aris

on

Ch

art

of

Mo

del

s &

Mar

ksM

od

elM

ark

LCD

-A15

04LC

D-A

2004

A B

L4100SCM18-3

Main 1/4 & IR Sensor Schematic DiagramComparison Chart of Models and Marks

MODEL MARKLCD-A1504 ALCD-A2004 B

L4100SCM2

Main 2/4 Schematic Diagram

8-4

L4100SCM3


8-5

Comparison Chart of Models and Marks


L4100SCM4


8-6



CAUTION !Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.If Main Fuse (F601) is blown , check to see that all components in the power supplycircuit are not defective before you connect the AC plug to the AC power supply.Otherwise it may cause some components in the power supply circuit to fail.

CAUTION !For continued protection against fire hazard,replace only with the same type fuse.

NOTE:The voltage for parts in hot circuit is measured usinghot GND as a common terminal.

L4100SCF

Function Schematic Diagram ( A )

8-7



8-8

Function Schematic Diagram ( B )Comparison Chart of Models and Marks


L4200SCF

L4200SCINV

Inverter Schematic Diagram ( B )

8-9



L4100SCL1

LCD Main 1/2 Schematic Diagram

8-10



L4100SCL2

LCD Main 2/2 Schematic Diagram

8-11



1 NOTE : CN104, CN105, CN301 are used for adjustment at factory.

9-1 L4100WF

WAVEFORMS

Input: PAL Color Bar Signal (with 1kHz Audio Signal)

WF1 ~ WF8 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.)

WF1 Pin 14 of IC801

AUDIO 0.1V 0.5ms

WF2 Q701 EMITTER

S-VIDEO-Y 0.2V 10µs

WF3 Q702 EMITTER

S-VIDEO-C 0.2V 20µs

WF4 Q751 EMITTER

B 0.5V 5µs

WF7 Q754 EMITTER

CVBS2 0.2V 20µs

WF5 Q752 EMITTER

G 0.5V 20µs

WF8 Q781 EMITTER

CVBS1 0.2V 20µs

WF6 Q753 EMITTER

R 0.5V 10µs

9-2 L4100WF

Input: PAL Color Bar Signal (with 1kHz Audio Signal)

WF9 ~ WF14 = Waveforms to be observed at Waveform check points. (Shown in Schematic Diagram.)

WF9 R997 ( A )R994 ( B )

WF10 R902

WF11 R901

WF12 R904

WF13 R907

WF14 R905

CTKH 1V 20ns

STH1 1V 1µs

POL 1V 20µs

LP 1V 10µs

STV1 1V 5ms

CLKV 1V 10µs



10-1 L4100WI

LC

D M

OD

UL

E

LC

D M

AIN

CB

A U

NIT

1 32 54 76 8 9 10 131211 14 15 1716 1918 2120 22 23

BAC

KLI

GH

T-S

W

RC

V-I

NB

ACK

LIG

HT-

AD

J

KE

Y-IN

-1K

EY-

IN-2

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combo funai emerson sylvania chasis-lcd-a1504

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