strw6554a

COLOR TVSERVICE MANUAL

CAUTIONBEFORE SERVICING THE CHASSIS,READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS : CW81A

MODEL : 21FU3RL 21FU3RL-T3

website:http://biz.LGservice.comInternal Use Only

- 2 - LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

CONTENTS

Contents ....................................................................................................2

Safety Precautions....................................................................................3

Specifications............................................................................................4

Adjustment Instructions...........................................................................5

Trouble Shooting ......................................................................................8

Block Diagram.........................................................................................13

Exploded View.........................................................................................14

Exploded View Parts List .......................................................................15

Replacement Parts List ..........................................................................16

SVC. Sheet...................................................................................................


SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in theSchematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to preventX-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance

An isolation Transformer should always be used during theservicing of a receiver whose chassis is not isolated from the ACpower line. Use a transformer of adequate power rating as thisprotects the technician from accidents resulting in personal injuryfrom electrical shocks.

It will also protect the receiver and it's components from beingdamaged by accidental shorts of the circuitry that may beinadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown,replace it with the specified.

When replacing a high wattage resistor (Oxide Metal Film Resistor,over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Due to high vacuum and large surface area of picture tube,extreme care should be used in handling the Picture Tube. Donot lift the Picture tube by it's Neck.

X-RAY Radiation

Warning:

To determine the presence of high voltage, use an accurate highimpedance HV meter.

Adjust brightness, color, contrast controls to minimum. Measure the high voltage. The meter reading should indicate 23.5 ± 1.5KV: 14-19 inch, 26 ± 1.5KV: 19-21 inch,29.0 ± 1.5KV: 25-29 inch, 30.0 ± 1.5KV: 32 inchIf the meter indication is out of tolerance, immediate service andcorrection is required to prevent the possibility of prematurecomponent failure.

Before returning the receiver to the customer,

always perform an AC leakage current check on the exposedmetallic parts of the cabinet, such as antennas, terminals, etc., tobe sure the set is safe to operate without damage of electricalshock.

Leakage Current Cold Check(Antenna Cold Check)With the instrument AC plug removed from AC source, connect anelectrical jumper across the two AC plug prongs. Place the ACswitch in the on position, connect one lead of ohm-meter to the ACplug prongs tied together and touch other ohm-meter lead in turn toeach exposed metallic parts such as antenna terminals, phonejacks, etc. If the exposed metallic part has a return path to the chassis, themeasured resistance should be between 1MΩ and 5.2MΩ. When the exposed metal has no return path to the chassis thereading must be infinite.An other abnormality exists that must be corrected before thereceiver is returned to the customer.

Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet.Do not use a line Isolation Transformer during this check. Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitorbetween a known good earth ground (Water Pipe, Conduit, etc.)and the exposed metallic parts.Measure the AC voltage across the resistor using AC voltmeterwith 1000 ohms/volt or more sensitivity.Reverse plug the AC cord into the AC outlet and repeat AC voltagemeasurements for each exposed metallic part. Any voltagemeasured must not exceed 0.75 volt RMS which is corresponds to0.5mA.In case any measurement is out of the limits specified, there ispossibility of shock hazard and the set must be checked andrepaired before it is returned to the customer.

Leakage Current Hot Check circuit

The source of X-RAY RADIATION in this TV receiver is the HighVoltage Section and the Picture Tube.For continued X-RAY RADIATION protection, the replacementtube must be the same type tube as specif ied in theReplacement Parts List.

1.5 Kohm/10W

To Instrument'sexposed METALLIC PARTS

Good Earth Groundsuch as WATER PIPE,CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF


SPECIFICATIONSNote : Specification and others are subject to change without notice for improvement.

1. ScopeThis specification is applied to the CW81A Chassis.

2. Test and Inspection Method1) performance : LGE TV test method followed.2) Demanded other specification

- Safety: CB Spec.(EN60065)- EMC: CE Spec.(EN55020,EN55013)

3. Test ConditionEach part is tested as below without special appiontment1) Temperature : 20 ± 5°C(77 ± 9°F), CST : 40 ± 5°C2) Relative Humidity : 65 ± 10%3) Power Voltage : Standard input voltage 220V, 50/60Hz

* Standard Voltage of each products is marked by models.4) Specification and performance of each parts are followed

each drawing and specif ication by part number inaccordance with B.O.M.

5) The receiver must be operated for about 20 minutes prior tothe adjustment.

Item Specification Remark

Receiving System PAL BG,DK,I / NTSC M(AV3.58/4.43) China/ Indonesia/ Thai/ Vietnam

PAL BG,DK,I / NTSC M(AV3.58/4.43) CIS

SECAM DK

PAL BG,DK,I / NTSC M(AV3.58/4.43) Asia/ Middle East/ Africa

SECAM BG,DK,L

Available Channel VHF : E2 ~ E12

UHF : E21 ~ E69

CATV : S1 ~ S20

HYPER : S21 ~ S41

Input Voltage 220V~, 50/60Hz East Asia

100-240V~, 50/60Hz Others

Market China, Indonesia, Thai, Vietnam, Asia/Africa

Screen Size 14 ~ 21 inch (Flat / Conventional)

21” Super slim/ultra slim

Aspect Ratio 4:3

Display Method CRT

Tuning System FVS

Operating Environment 1) Temp : 0 ~ 40 deg

2) Humidity : ~ 85 %

Storage Environment 3) Temp : -20 ~ 60 deg

4) Humidity : ~ 90 %

4. General Specification


1. Application Object

These adjustment instructions are applicable to CW81A/BChassis.

2. Notes(1) Because this is a cold chassis, it is not necessary to use

an isolation transformer. However,operating it using a transformer between the power supply line and chassisinput to prevent electric shock and to protect the testinstrument.

(2)All adjustments must be done in correct sequence.However, for better productivity, it can be changed in a pre-permitted range.

(3) Environment conditions: If not specified, it must be done infollowing conditions.1) Temperature: 25±5°C 2) Humidity : 65±10%

(4) AC Voltage : 100-240V ±10%, 50/60Hz(5) If not specified, the receiver must be operated for more

than 20 minutes prior to the adjustment.(6) Signal: Received the standard color signal. (65dB±1dBuV)

PAL/SECAM : LG standard signal means the digital patternPAL_EU 05CH

(7) If not specified, APC ON is APC CLEAR(DYNAMIC).

3. AGC Voltage Adjustment

3-1. Necessary Instrument: Digital Multi meter : 1 set

- Max Input Current : Over 1A/ Max Input Voltage : 500Vdc- Measurement Range : 10mV-100mVdc/ Accuracy : 0.03%

3-2. Adjustment Preparation1) Input in the 75Ω cable 65dB(±1dB) LG standard signal.2) Connect the multi-meter to J105(AGC Check Marking)

3-3. Adjustment(1) Press the “INSTART” key of factory remote control and

select “VP0 (RF AGC)” adjustment mode.(2) Press the VOL +/-(F/G)Key until the multi-meter shows

reading as shown below.(3) CAUTION : Since the signal strength can be easily

changed by the condition of signal cable , youneed to check the signal strength frequently inorder to prevent misadjustment.

4. Screen Voltage Adjustment

4-1. Adjustment (Use factory remote control)(1) Input in the 75Ω cable LG standard signal (Digital

Pattern,480NC)(2) Press the “ADJ” key of factory remote control once to make

the TV set display horizontal line.(3) Turn the screen volume on the FBT clockwise until the

horizontal line is visible and turn it counterclockwise untilhorizontal line faintly visible.(Exit screen voltage adjustment by press “Enter(A)” key offactory remote control.)

5. Purity and Convergence Adjustment

5-1. Purity Adjustment(1) Adjustment Preparation

1) Receive Red Raster Pattern for purity adjustment.(51ch)2) Demagnetize the CPT and Cabinet with a degaussing

coil.

(2) Adjustment1) Pre-adjust the static convergence (STC) with the 4 and

6pole magnet.2) If the horizontal Line is inline with CPT Mark,2-Pole

magnet should direct 3-9 o’clock direction3) If not,direct 2-Pole magnet handle toward 6-12 o’clock

direction and adjust the Horizontal Line to fall onto themark opening the magnet at an angle.

4) Push the DY(deflection yoke) all the way to the CPTfunnel.

5) Turn the purity magnet(2-pole magnet) so that the“green” color portion of left side and the “blue” colorportion on the right side have equal amount ofcolor.

6) Pull the DY slowly backward and fix it when the wholescreen becomes red. (The specified torque for fixing DYscrew should be 10Kg/cm.)

5-2. Convergency Adjustment(1) Necessary Instrument

1) Degaussing Coil2) Convergency fixing instrument (special tools)

(2) Adjustment Preparation1) Operate the unit at the least 15 minutes before

adjustment.2) Using degaussing coil,remove the stains on CPT &

Cabinet.3) Received the Cross Hatch Pattern for Convergence

(09ch).4) Let the Contrast in normal luminance level.

ADJUSTMENT INSTRUCTIONS

G R B G R B

RG R B

<Fig. 1>

<Fig. 2>


(3) Static Convergence (STC) Adjustment1) Receive Cross Hatch Pattern (09CH).2) Before adjusting Static Convergence(STC),adjust the

focus first seeing to it that the WHITE color picturequality is sharp enough.

3) Converge the RED vertical line and BLUE vertical line inunity(same line) by changing the angle between the 2tabs of 4-pole magnet.

4) Converge the RED horizontal and BLUE horizontal lineunity(same line) by turning the 2 tabs of the 4-polemagnet. At this time,do not change the angle betweenthe 2 tabs.

5) Converge the R,G,B vertical line in unity(same line) bychanging the angle between the 2 tabs of the 6-polemagnet.

6) Converge the R,G,B horizontal line in unity(same line) byturning the 2 tabs of the 6-pole magnet. At this time, donot change the angle between the 2 tabs.

(4) Dynamic Convergence (DYC) Adjustment1) Y-Axis Adjustment : Adjust convergence of Y-axis

(vertical) by moving the deflectionyoke(DY) left and right.

2) X-axis Adjustment : Adjust convergence of X-axis(horizontal) by moving the deflectionyoke(DY) up and down.

6. White Balance Adjustment

6-1. Necessary Instrument(1) Auto White Balance Meter (Low/High l ight Pattern

generator)(2) CRT Color Analyzer, CA-100 : 1set(3) Factory Remote Control

6-2. Adjustment Preparation: Prior to this adjustment, the Screen Voltage adjustmentshould be finished.

6-3. Auto Adjustment(1) Adjust the using Auto White Balance Meter.(2) Enter CPU OFF mode by press the “IN-START” &”MUTE”

key of factory remote control in turn before adjustment. Exit CPU OFF mode by press the “MUTE” key of factoryremote control after adjustment finished. * In case there is excess RED color at screen voltage

adjustment, adjust it using “Volume -(G)”Key of factoryremote control until the RED color disappear.

6-4. Manual Adjustment(1) Adjust using white Balance meter and factory remote

controller.(2) Enter into adjustment mode by pressing the INSTART key

of factory remote control.(3) Use the CHD, CHE Key to choose adjustment item.(4) Use the VOLF, VOLG Key to change item data.

(5) Adjustment Procedure1) Make the picture luminance 45Ft-L by change the

“CONTRAST” and “BRIGHTNESS”.2) Adjust X data of high light with R DRIVE and Y data of

high light with B DRIVE to have color temperature asshown below.

3) Make the picture luminance 4.5Ft-L by change the“CONTRAST” and “BRIGHTNESS”.

4) Adjust X data of low light with R BIAS and Y data of lowlight with B BIAS to have color temperature as shownbelow.

5) Repeat steps a~d until both low and high light havesame reading as shown below.

7. Focus Voltage AdjustmentThis adjustment must be done after operating the TV setreceiver sufficiently.

7-1. Adjustment PreparationReceived the LG standard pattern (PAL : Digital Pattern,480NC, 13CH, NTSC : Crosshatch pattern, Ch.09 ) and setthe picture condition on “APC ON” (CLEAR) mode.

7-2. AdjustmentTurn the focus volume on the FBT upper direction to have thebest focus vertical line (figure 1.(a)) and horizontal line (figure1.(b)) as shown below.

8. SUB-BRIGHTNESS AdjustmentThis adjustment must be done after the White balanceAdjustment.

8-1. Adjustment preparation(1).NTSC

- Received LG standard Mono scope pattern (CH14).- Set the picture condition on “APC ON” (CLEAR) mode.

(2). PAL- Received PAL B/G 5CH pattern.- Set the picture condition on “PSM ON” (DYNAMIC) mode.

MARKET COLOR TEMPERATURE X-AXIS Y-AXIS REMARK

ALL 13000 268 ± 5 273 ± 5

[ f igur e 1- PAL]

( a)

( b)

[ f igure 1 - NTSC]


8-2 Adjustment(1) Press the “ADJ” key of the factory remote control twice to

enter to “SUB-BRIGHTNESS” adjustment mode.(2) PAL MODEL : Change the Sub-Brightness data by

pressing the VOLF,VOLG KEY so that the 1th, 2th BlackLevel in gray scale of PAL B/G 05CH pattern have a littlebit of difference. (See figure 2)

8-3. Sub-Tint AdjustmentThis adjustment has to be done only if the picture has bad tintotherwise, it can be omitted if the picture has good tint.

(1) Received LG standard pattern signal (SMPTE, 2CH).(2) Set the picture condition on “APC ON” (CLEAR) mode.(3) Press the “ADJ” key of the factory remote control three

times to enter to “SUB-TINT” adjustment mode.(4). Change the Sub-Tint data by pressing the VOL¢∏,VOL¢∫

Key until the upper and lower CYAN color becomes samecolor.

9. Deflection setting data adjustmentThese adjustment wil l be done by Auto AdjustmentEquipment.For manual adjustment, it is also possible by the followingprocedure.

9-1. Adjustment Preparation(1) Deflection setting data adjustment can be done only with

remote control.(2) Press the “INSTART” Key on the factory remote control

continuously to enter to Deflection Adjustment mode.(3) Press the CHD, EKey to select adjustment item.(4) Press the VOLF, G Key to change the data.

9-2. Adjustment(1) Horizontal Position Adjustment

Select SVC02 (H-POS) and adjust so that the left and rightvertical line are symmetrical as possible.

(2) Vertical Position AdjustmentSelect SVC02 (V-POS) and adjust so that the horizontalcenter line coincide with geometric horizontal center of theCPT.

(3) Vertical Size AdjustmentSelect SVC02 (VA) and adjust so that the middle circle ofthe Digital Pattern (480NC, 13CH) coincide with theeffective screen of CPT.

9-3. Adjustment (21” Super Slim, Ultra S/S Model)(1) Vertical Position Adjustment

Select SVC02(V-POS) and adjust so that the horizontalcenter line coincide with geometric horizontal center of theCPT.

(2) Vertical Linearity Adjustment.Select SVC02(V-LIN) and adjust so that the size of theupper circle is alike with the one of the lower circle at LGstandard pattern signal (PAL : EU05CH, NTSC : 13CH).

(3) Vertical Size Adjustment.1) NTSC :Select SVC02(VA) and adjust so that the middle

circle of the Digital Pattern (480NC, 13CH) coincide withthe effective screen of CPT.

2) PAL : Select SVC02(VA) and adjust so that the middlecircle of the Digital Pattern (PAL B/G 5CH) has 6~7mmgaps from the effective screen of CPT.

(4) Horizontal Position AdjustmentSelect SVC02(H-POS) and adjust so that the left and rightvertical line are symmetrical as possible.

(5) Horizontal Size AdjustmentSelect SVC02(EW WIDTH) and adjust so that the outer lineof the left, right and the remotest grid will correspond to theeffective boundary surface.(The remotest grid, NTSC:within 2.5 ~ 3.0 column, PAL: within 0 ~ 25%)

(6) Parabola AdjustmentSelect SVC02 (EW PARAB) and adjust so that the verticalline of the remotest grid at the left or right side of the screenwill be parallel to the vertical line of the center of screen

(7) Trapezoidal AdjustmentSelect SVC02(EW TRAPE) and adjust so that the width ofthe upper part of screen is alike with the one of the lowerpart of screen.

(8) EW UPCOR/ LOCOR AdjustmentSelect SVC02(EW UPCOR, EW LOCOR) and adjust sothat the vertical line in the four corners become straightline.

(9) BOW AdjustmentSelect SVC02(HP BOW) and adjust so that the vertical linein the four corners become straight line.

[Fig.2] PAL B/G 05CH signal

1th VS 2thBLACK LEVEL have a little bit of difference.(In case of VIETNAM MODEL 2th VS 3th)

- 8 -

TROUBLE SHOOTING

LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

1. TV FUNCTIONAL

2 TU/IF SECTION

J512, J544


3. VIDEO PROCESSING

Maneuver defectivenessManeuver defectiveness

In case of influx NOISE- R/C is not operate

Maneuver defectiveness

J624, J625, C603, C604, C609,C610, R605, R616, R611, R612

, J509

Q241,R247

No color

1, 2, 5

56, 5752, 54

35, 36, 4050~54

46~48

4, 9, 20, 24, 49, 62

17~23LV762xx

4. SMPS PRIMARY

DB801(TS4805G),DB802(D5SB60)

IC810(STR-W6553A(MONO)), (STR-W6554A(STEREO))

C852, R808, ZD851


5. SMPS SECONDARY SECTION

DB801(TS4805G),DB802(D5SB60)

IC810(STR-W6553A(MONO)), (STR-W6554A(STEREO))

C852, R808, ZD851

6. VERTICAL SECTION

, STV9326


7. HORIZONTAL SECTION

L402, L403, L404, C401, C402, C412

8. SOUND PROCESSING SECTION

(LV762xx) (LC75024/LA72702)


9. CPT DRIVE SECTION

8

D902

D902

- 13 -

BLOCK DIAGRAM

LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes

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- 14 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All right reserved. Only for training and service purposes

EXPLODED VIEW

170

300

112

120

530

531

532520

101

104

600

400

150

174

320330

331

370

360

380

390590

591

Many electrical and mechanical parts in this chassis have special safety-related characteristics. Theseparts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components asrecommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes

LGE Internal Use Only

PUMP-UP

V-I

N

VCC

PU

MP

GND

V-O

UT

ST

AGE

V-R

EF

O/

-UP

CEM

INOUTGNDS

V-DY

H-DY

WARINNG BEFORESERVICING THIS CHASSIS, READ 'X-RA Y

RADIATION PRECAUTION,' `SAFETY PRECAUTION' AND PRODUCT

SAFETY NOTICE IN THIS MANUAL

CAUTION : THE MARKS IN THE SCHEMATIC DIAGRAM AND THE PARTS LIST DESIGNATE

COMPONENTS WHICH HAVE SPECIAL CHARACTERISTICS FOR SAFETY, AND SHOULD

BE REPLACED ONLY WHICH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT OR

SPECIFIED IN THE PARTS LIST. BEFORE REPLACING ANY OF THESE COMPONENTS,READ

CAREFULLY THE PRODUCT SAFETY NOTICE IN THIS MANUAL .

DO NOT DEGRADE THE SAFETY OF THE RECEIVER THROUGH IMPROPER SERVICING.

A0

A1

A2

GND SDA

SCL

TEST

VCC

KS

SAW

I.RE F

GND OUT

Vcc

EW

SIZE

Y

Cb

Cr

STEREOPLL

PILOTPLL

PILOT

PILOT

LEVEL DET

CANCELLER

REGULATOR

MODEOUT

MATRIX

-6dB

L-RDEMOD

SAPDEMOD

SAP BPF

SIF DEMOD

LPFSAPDET

ST/SAPSW LPF

LPF dbx processor

OffsetCancell

SYSTEMCONTROL

I2CDECODE

ControlSTSAP

Sp

ectr

al

RM

S D

ET

Address

MUTE

L-R/SAP

MUTE

L+R

R-OUT

R-IN

L-OUT

L-IN

B

D/ S

GR

FB

V-OUT

V-IN

5

4

2

1

8

6

7

3

10

9

11

12

RippleFilter

+OUT2

-OUT2

+OUT1

-OUT1

Input AMP

Out AMP

Out AMP

Vcc Standby

IN1

PREGND

MUTE

IN2

Input AMP

PowerGND

TIMER0

RESET

ADC

V DET

R

I/O

RESET

G

PORT 1

B RAM

RST

FS

I

XTSEL

CPU

CPU CLOCK

CORE

VDD3

BASETIMER ROM

OSD

DATA

VDD5

BUS

CLOCK

CVBS

CLOCK

VS

PET_IN

CONTROL

AFT

C_SYNC

HS

POWER_IN

PORT 0I/ O

TEXTTELE

PLL

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14

13

9

12

11

10

1

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3

4

5

6

7

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4

6

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7

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1

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3

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6

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5.1 KR414

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1 2 3 4 5 6 7 8 9 10

11

12

13

14

15

16

17

18

19

20

21

22

23

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1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

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IF_

VC

C[5

V]

62

VID

EO

_O

UT

/SV

O 61

VIF

_A

GC 6

0

AP

C-F

ILT

ER

59

RF

_A

GC 5

8

VIF

_IN

15

7

VIF

_IN

25

6

IF_

GN

D5

5

SIF

_O

UT 5

4

AP

C-F

ILT

ER

53

SIF

SIF

_IN

52

SP

K-R

_O

UT 5

1

SP

K-L

_O

UT 5

0

RG

B_

VC

C[9

.0V

] 49

R_

OU

T 48

G_

OU

T 47

B_

OU

T 46

ABL 4

5

1C

HIP

_G

ND 4

4

CP

U_

GN

D 43

FIL

TS

LC

42

RE

SE

T 41

P0

7 40

P0

6 39

P0

5 38

P0

4 37

P0

3 36

P1

7 35

P1

6 34

P1

1 33

4.7u F50V

C280

??C845*

TU1016700MF0018A(CIS)6700MF0018B(PAL)6700NFNS11E(KOREA)6700NFNS11F(NTSC FR TYPE )6700NFNS11G(NTSC PHONE TYPE)6700NFNS11H(NTSC DIN TYPE)

100u F10V

C636

100uF10V

C615

1.5V REG.IC606

1

2

3

3.3V

1.5 V

10KR541

2200P/500 VCK

C421

330/0.5WR441

J403T/W

0.1u F50V

C677

5V

_2

5V_1

5V

_1

5V_1

T/WR853

J41 3T/ W

0.022uF50V

C574

0.01u F?

1000 pC549*

330 KR538*

100R511

1.2UHL528

5.1MR684

2.2MR654

0.1uFC664

C114*0.1uF

J83 0T/ W

J402T/W

J303T/ W

J306T/W

J30 1T/ W

J401T/W

60uHL405 *

?L406 *J404*

T/W

J81 4T/ W

0.1uF275V

C816

123 AFB817*

?C839

J81 0T/ W

6322A00030 ATH803*

J906 T/ W

J903T/ W

J905T/W

1N4003D903

J907T/ W

J620T/W

?C627*

J607T/W

30PC552*

IC6

51

LC

75

02

4E

AV

DD

33

1

AO

UTR

2

AV

SS

3

LR

VR

EF

4

AV

DD

33

5

NC

6

AO

UT

L7

AV

DD

33

8

VR

T9

VC

OM1

0 VR

B1

1

SIF

21

2

AV

SS

13

AV

DD

33

14 A

VD

D3

31

5

AV

SS

16 A

VD

D1

51

7

AV

SS

18 X

VSS

19

XIN

20 X

OUT

21

AV

DD

33 4

2

MR

VR

EF 41

AV

SS 4

0

NC 3

9

AV

DD

33 3

8

TE

ST

B1 3

7

TE

ST

B0 3

6

TE

ST 3

5

NC 3

4

NC 3

3

NC 3

2

NC 3

1

IOV

SS 3

0

IOV

DD

332

9

RS

TB 2

8

SDA 2

7

SCL 2

6

SA 2

5

DV

DD

15 24

DV

SS 2

3

XV

DD

33 2

2

5V

_1

J720T/W

J705T/W

J281T/W

J704T/W

T/WJ673

T/WJ703

T/WJ641

T/WJ652

T/WJ642

1KR633

1KR632

T/WJ651

T/WJ643T/W

J653

T/WJ672

J527T/W

T/WR40

T/WJ562

J519T/W

T/WJ50 8

J112T/W

T/WJ111

10UHL663 J633*

T/ W

10UHL66 2

T/ WR654

T/WJ645

T/ WJ641T/W

J648T/W

J642

T/ WJ647

47uF10V

C650

J2 2T/ W

J23T/ W

T/ WJ525

J55 5T/ W

J54 1T/ W

T/WJ109

4.7uHL503

T/WJ101

T/WJ558

T/WJ552

T/WJ201

T/ WJ557

T/ WJ507

0.01uFC562*

0.01uFC563*

0.01uFC564*

0.01 8MYL

C542*

0.1(PP)

C545

?R521*

T/WJ524

T/WJ560

9.1VZD407*

T/WJ513

T/WJ528

T/WJ532

T/WJ504

4.7 KR566

T/ WJ706

T/WJ707

T/ WR701

T/WJ521

T/ WR704

T/WJ503

T/WJ506

T/ WJ2 4

T/ WJ522

T/WJ55 9

0.01uFC29

T/ WJ542

T/ WJ702

T/WJ625

T/ WJ624

T/ WJ515

T/ WJ512

T/ WJ544

T/WJ546

J535T/ W

0.01u FC528*

T/ WJ537

T/ WJ543

T/WJ520

T/WJ510

T/WJ567

J286T/ W

J564T/ W

J520T/ W

J563T/ W

T/ WC283

J285T/ W

T/ WJ282

T/WJ292

T/WJ287

T/ WJ288

T/ WJ549

J637T/W

T/ WJ289

T/WJ290

J553T/WT/ W

R536

T/ WJ28 3

T/ WJ284

J291T/W

J286T/W

100J53 4

T/ WR567

T/ WJ281

T/ WR711

J534T/W

J63 8T/ W

J646T/ W

100uF10V

C857*

3.3V REG.IC603

1

2

3

J551T/ W

J804T/ W

J70 9T/W

510R247

A1266Q241

T/ WJ280

T/WJ687

T/ WJ672

T/WJ550

T/ WR780

T/WJ565* T/W

J818

0.1uFC283

10uHL501

100J511

T/WJ54 0

J55 6T/ W

J52 6T/ W

47KR318

5V_1

J81 9T/W

J634T/ W

J523T/W

J664 *T/ W

33/2 W( RS)

R610 *

100uF10V

C699*

J665T/W

5.1VZD601*

0.33uFC630

100pFC639

T/ WJ646

10UHL66 5

T/WJ650

J647T/W

3.3

V

47uF10V

C691*47uF10V

C692*

10UHL664

125-022RFB601

T/WJ110

J3T/W

2.7K/2W(RS)

R405

33pF/10pF

C520

33pFC503

33pFC546

75KR222

75KR221

T/WR223

J826T/ W

J626T/W

J63 5T/ W

J601T/W

J102 *T/ W

0.01uFC105

390R105

0.01uFC104

22R104

1.2KR103

100R101

0.82L102

0.01uFC115

C3197Q101

3.6KR102

47uF16V

C111

9V

J40 5T/W

TVR06JD304

470uF10V

C525

C102MQ502

C102MQ111

CP120.01uF16V CP13

0.01uF16V

LP0510u H

LP0310uH

CP070.01u F50V

RP101K1/10 W5%

CP2047uF10V

RP091K

1/10W5%

ICP03S1117-18PIC

1

GND

2OUTPUT 3 INPUT

P5

51

B3

52

38

-10

10

1 2 3 4 5 6 7 8 9

10

CP3047u F10V

LP0410uH

CP0447pF50V

CP340.1u F50V

RP

14

10

1/1

0W

5%

RP

131

0

1/1

0W

5%

CP190.01uF50V

CP2547uF10V

RP2810

1/10W5%

QP022SC3875S

E

BC

ICP04KA75270Z

2G

3 O1I

QP012SC3875S

E

BC

CP330.1uF50V

CP0847uF10V

CP310.01uF50V

CP1847pF50V

LP0610uH

CP350.1u F50V

RP

11

10

0

1/1

0W

5%

CP10330uF10V

CP0547pF50V

35

23

8-1

01

0P

55

2B 1 2 3 4 5 6 7 8 9

10

CP290.01uF50V

CP270.01uF50V

RP301K

1/10W5%

CP0122pF50V

RP03100

5%1/6W

CP230.01uF50V

RP3122K

1/10W5%

CP2847uF10V

ICP02

S1117-33PIC1

GND

2OUTPUT 3 I NPUT

RP01220

1/6 W5%

CP110.01uF16V

RP1710

1/10W5%

RP

12

10

1/1

0W

5%

CP0647pF50V

XP0120.25MH z

RP1510K

1/10 W5%

ICP01

PVP9390A-QG-A1

1X

OU

T2

XIN

3V

SS

18

_1

4V

DD

18

_15

GP

O0

6S

EL

7O

UT

38

OU

T2

9O

UT

11

0V

SS

33

DAC

11

VD

D3

3D

AC

12FSW13IN 314IN 215IN 116VDD18ADC17VSS18ADC18CVBS119TEST20CVBS221TM22CVBS32

3C

VB

S42

4V

SS

33

AD

C2

5V

DD

33

AD

C2

6Y

IN2

7U

IN2

8V

IN2

9R

ES

ET3

0V

DD

18

_23

1V

SS

18

_2

32

PO

R3

3G

PO

2

34I2C1

35I2C2

36SDA

37SCL

38INTR

39VDD33PAD

40VSS33PAD

41VSP

42HSP

43GPO1

44CLKOUT

CP3247uF10V

CP1647pF50V

RP08100

1/10 W5%

CP0222pF50V

LP0210uH

CP1747pF50V

CP2147uF10V

RP02220

1/6W5%

RP051K

1/10W5% CP03

47pF50V

RP04100

1/6W5%

LP0110uH

RP

06

10

0

1/6

W5

%

CP360.1uF50V

RP341K1/10W5%

RP331K

1/10W5%

RP0722K1/10W5%

0. 1MYL

C515*

100pC245*

0.1uFC529

R904

R913C2330- YQ904

R706T/W

R711T/W

R317*

J864T/ W

J84 1T/ W

J825T/ W

J82 2T/ W

J82 0T/W

J812T/W

T803

61709MC016D

J813T/ W

J801T/ W

J80 2T/W

J803T/ W

J80 8T/W

J80 6T/ W

J807T/W

J809T/W

T/WJ71 2

J708T/W

T/WJ690

T/WJ698

T/WJ66 7

J656T/W

J602T/ W

J62 1T/ W

J6

22

T/WJ623

ST

J60 5

T/ WJ108

T/ WJ606

J604

T/W

T/WJ609

100J51 6

T/ WJ518

J409T/W

J22 0

T/W

J22 1

T/W

J22 3T/W

J15 1

J6

LA

72

73

0IC

75

1

LIN

-11

LIN

-22

LIN

-33

RIN

-14

RIN

-25

RIN

-36

VIN

-17

VC

C8

VIN

-29

GN

D1

0

VIN

-3

11

R_

MO

NIT

OR1

2

L_

MO

NIT

OR

16

SC

L1

3

SD

A1

4

NC

15

AL

C_

FIL

T1

7

VID

EO

_O

UT

18

AU

DIO

_R

_O

UT

19

AU

DIO

_L

_O

UT

20

VIN

-TV

21

BIA

S_

FIL

TE

R2

2

RIN

-TV

23

LIN

-TV

24

A1275Y

Q103

30KR114 C102M

Q104

T/WJ203

J502

T/W

KIA78R05AP IIC806

12

34

J829T/ W

J82 8T/ W

T/WR811

2200u F25V

C838TVR06JD806

125-022 RFB808

470P/500 VC836

CK

180/2W( RS)

R314

T/ WJ539

100pFC532

1KR606

T/ WJ29 3

9V

TH402*300oh m

TH401*300oh m

SCREEN

5V

510(14")

FOCUS

*

180V

*

26V

GA

ME

/FM

DA

TA

V2

D

GA

ME

ID

/FM

CE

L2 GGGR2

Option

MONO:330/0.5W

NC

GN

D

W/O HP

SD

A

11

SC

L

12

CPT BOARD

MONO

<L

-IN

>

10

<R

-IN

>

<V

-OU

T>

Headphone

<L

-OU

T>

14

<B+ : 115V>

STEREO:510/0.5 W

13

<MONO 4PIN OPT.>

OCP

GND

180V

HEATER

MONO OPTION

9V

B

EBY41778501

G

* : OPTIONR

2.2/0.5W(LG CPT)

H-GND

<SCHEMATIC DIAGRAM OF CW-81A>

'07.05.08

CIRCUIT DIAGRAM

CW-81A CHASSIS

IN

(CK)

FOCUS

180V

SCREEN

COLD

AFC

HOT

C

ABL

C3229(21" )

26V

D833*

<R

-OU

T>

HEATER

<V

-IN

>

COL

12V

C3229(21")

BK

OUT

GK

<EYE OPT. >

HEATER

RK

GND

B

H-GND

DEG OPTION

RU2AMV

HEATER

C3229(21" )

HOT

V-NECK

9V

270P(14" )

B

VID

EO

/NC

390P(14")

G

GND

390P(14")

R

AU

DIO

/FM

ON

_O

FF

510(14") ANODE(HV)

GA

ME

/FM

CL

K/I

R

510(14")

KE

Y

A

VERSION 1.11 2008.02.26

PO

WER

HEADPHONE R V(MONO)

L

PALNTSC

HV

INNER

112V

??

3.00V

CH-/PR-

VOLTAGE

0.81 V

0V

2.48 V

<KEY MATRIX>

CH+/PR+

1.88VMENU/OK

VOL+/VOL+

T-SOUND

NT/PAL

T-PICTURE

TV_VIDEO/MENU 1.34V

??

VOL-/VOL-

<D

VD

_R

-IN

>

<D

VD

_L

-IN

>

LA42101 (10W MONO MAX)

LA42102N(15W+15W MAX)

<PAL>

ABNNORMAL

<NICAM/A2 OPT.>

<DOWNLOAD OPT.>

BTSC <AV STEREO OPT.>

<NTSC>

W/TEXT W/O TEXT

NTSCPAL

NICAM/A2

<SIDE A/V OPT>.

<MONO><STEREO>

<MONO OPT.> <MONO OPT.>

<MONO 4P,W/SCART OPT.>

<W/O SCART,PIP>

<W/SCART,PIP>

<GAME, FM TX OPT.>

<STEREO,W/O SCART OPT.>

<W/O PIP>

FB

-IN

Cb

-IN

Y-I

N

Cr-

INGN

D

5V

R-O

UT

G-O

UT

B-O

UT

FB

-OU

T

SDA

SCL

VS

HS

GND

GND

GND

TV

_V

IDE

O

AV1

AV

2

<PIP OPT.>

<W/PIP OPT.>

<W/PIP OPT.>

<IC VERSION>

BPF

Slave Address=0x38

<W/O BPF OPT.>

<W/FM TX OPT.>

MN

T_

R

MN

T_

L

GN

D

GN

D

D

NC

S/GND

VI N

SS/ADJ

FB

BD

MONO :IC810(W6553A), R806(RN ???)STEREO:IC810(W6554A), R806(RN 39K)

MODE INPUT

VIN1 REAR

VIN2 FRONT/SIDEVIN3 GAMEVIN-T V RF

MONO LV76210LV76220

LV76230

PAL/NT

SOUNDIC SYSTEM

PAL/NT/SECAM

COMBEWTXT Surround A2+NICAMBTSC

LV76211

LV76221

LV76231

LV76233

LV76212

LV76222

LV76213

LV76232

LV76223

LC75024

LA72702N

AV-ST

RF-STIC

*ASSEMBLE SUSOC(AV/ST)IC WITH RF/ST IC FOR RF-ST MODEL

PAL/NT/SECAM

PAL/NT/SECAM

PAL/NT

PAL/NT/SECAM

PAL/NT/SECAM

PAL/NT

PAL/NT/SECAM

PAL/NT

PAL/NT/SECAM

PAL/NT/SECAM

A2/NICAM

BTSC

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

LA42102L(10W+10W MAX)

<STEREO OPT.>

<SS/ULTRA OPT. >

<FLAT,Normal OPT. >

<SS/ULTRA OPT.>

<FLAT,Normal OPT.><SS OPT. ><ULTRA OPT. >

B+

<MONO/AV ST OPT. >

GND

GND

IR KE

Y

PO

WER

ST

-5V

GN

D

EY

E

GN

D

9V

NC

<MONO/AV ST OPT. >

<W/O RELAY>

<W/O NICAM>

<NICAM>

W/O ST-BY 1WW/ NICA M

W/O ST-BY 1W

B+

S-Vcc

10.5 V

???V

GND

S-GND

GND

COLD

GND

<RF ST>

<MONO/AV ST OPT.>

<MONO/AV ST>

<PRE AMP OPT.>

<MUTE OPT.>

Slave Address=0x80

VCD Slave Address=0xBA

EEPROM Slave Address=0xA0

TUNER Slave Address=0xC0

Slave Address=0x92

AV1

GND

AV2

GND

GND

RF

SCL

SDL

VS

HS

FB

0

RI

5V

RO

BO

GO

BI

GND

FB

I

GI

CPT BOARD

PIP BOARD

NARROW RANGE OPT.

<W/O ST-BY 1W OPT>

<W/ST-BY 1W OPT>

W/ST-BY 1W

=>Initial model: 21"ULTRA S/S(21FU1R) .

May, 2008Printed in KoreaP/NO : MFL41322905

strw6554a

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