PDF User Manual

  1. Home
  2. Manuals
  3. LG 21FU3RL Service Manual

LG 21FU3RL Service Manual

21FU3RL-T3

Made by: LG
Type: Service Manual
Category: TV
Pages: 16
Size: 3.73 MB

 

Download PDF User Manual



Full Text Searchable PDF User Manual



background image

COLOR TV

SERVICE MANUAL

CAUTION

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

CHASSIS : CW81A

MODEL : 21FU3RL

21FU3RL-T3

website:http://biz.LGservice.com

Internal Use Only

 


background image

- 2 -

LGE Internal Use Only

Copyright © 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...................................................................................................

 


background image

- 3 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

SAFETY PRECAUTIONS

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by      in the
Schematic 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 prevent
X-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 the

servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.

It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently 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

. Do

not lift the Picture tube by it's Neck.

X-RAY Radiation

Warning: 

To determine the presence of high voltage, use an accurate high
impedance 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 inch
If the meter indication is out of tolerance, immediate service and
correction is required to prevent the possibility of premature
component failure.

Before returning the receiver to the customer, 

always perform an 

AC leakage current check

on the exposed

metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock. 

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc. 
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1MΩ and 5.2MΩ. 
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver 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 capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
0.5mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.

Leakage Current Hot Check circuit

The source of X-RAY RADIATION in this TV receiver is the High
Voltage Section and the Picture Tube.
For continued X-RAY RADIATION protection, the replacement
tube must be the same type tube as specified in the
Replacement Parts List.

1.5 Kohm/10W

To Instrument's
exposed 
METALLIC PARTS

Good Earth Ground
such as WATER PIPE,
CONDUIT etc.

AC Volt-meter

IMPORTANT SAFETY NOTICE

0.15uF

 


background image

- 4 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

SPECIFICATIONS

Note :

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

1. Scope

This specification is applied to the CW81A Chassis.

2. Test and Inspection Method

1) performance : LGE TV test method followed.
2) Demanded other specification

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

3. Test Condition

Each part is tested as below without special appiontment
1) Temperature : 20 

± 5°C(77 ± 9°F), CST : 40 ± 5°C

2) 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 specification by part number in
accordance with B.O.M.

5) The receiver must be operated for about 20 minutes prior to

the 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

 


background image

- 5 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

1. Application Object

These adjustment instructions are applicable to CW81A/B
Chassis.

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 chassis

input to prevent electric shock and to protect the test
instrument.

(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 in

following 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 pattern
PAL_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 Preparation

1) 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 , you
need to check the signal strength frequently in
order 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 until
horizontal line faintly visible.

(Exit screen voltage adjustment by press “Enter(

A

)” key of

factory 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) Adjustment

1) 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 direction

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

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

4) Push the DY(deflection yoke) all the way to the CPT

funnel.

5) Turn the purity magnet(2-pole magnet) so that the

“green” color portion of left side and the “blue” color
portion on the right side have equal amount of
color.

6) Pull the DY slowly backward and fix it when the whole

screen becomes red. (The specified torque for fixing DY
screw should be 10Kg/cm.) 

5-2. Convergency Adjustment

(1) Necessary Instrument

1) Degaussing Coil
2) Convergency fixing instrument (special tools)

(2) Adjustment Preparation

1) 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

R

G     R     B

<Fig. 1>

<Fig. 2>

 


background image

- 6 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

(3) Static Convergence (STC) Adjustment

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

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

3) Converge the RED vertical line and BLUE vertical line in

unity(same line) by changing the angle between the 2
tabs of 4-pole magnet.

4) Converge the RED horizontal and BLUE horizontal line

unity(same line) by turning the 2 tabs of the 4-pole
magnet. At this time,do not change the angle between
the 2 tabs.

5) Converge the R,G,B vertical line in unity(same line) by

changing the angle between the 2 tabs of the 6-pole
magnet.

6) Converge the R,G,B horizontal line in unity(same line) by

turning the 2 tabs of the 6-pole magnet. At this time, do
not change the angle between the 2 tabs.

(4) Dynamic Convergence (DYC) Adjustment

1) Y-Axis Adjustment : Adjust  convergence of Y-axis

(vertical) by moving the deflection
yoke(DY) left and right.

2) X-axis Adjustment : Adjust  convergence of X-axis

(horizontal) by moving the deflection
yoke(DY) up and down.

6. White Balance Adjustment

6-1. Necessary Instrument

(1) Auto White Balance Meter (Low/High light Pattern

generator)

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

6-2. Adjustment Preparation

: Prior to this adjustment, the Screen Voltage adjustment

should 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 factory
remote control after adjustment finished. 
* In case there is excess RED color at screen voltage

adjustment, adjust it using “Volume -(

G

)”Key of factory

remote 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 CH

D

, CH

E

Key to choose adjustment item.

(4) Use the VOL

F

, VOL

G

Key to change item data.

(5) Adjustment Procedure

1) 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 as
shown 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 low

light with B BIAS to have color temperature as shown
below.

5) Repeat steps a~d until both low and high light have

same reading as shown below.

7. Focus Voltage Adjustment

This adjustment must be done after operating the TV set
receiver sufficiently.

7-1. Adjustment Preparation

Received the LG standard pattern (PAL : Digital Pattern,
480NC, 13CH, NTSC : Crosshatch pattern, Ch.09 ) and set
the picture condition on “APC ON” (CLEAR) mode.

7-2. Adjustment

Turn the focus volume on the FBT upper direction to have the
best focus vertical line (figure 1.(a)) and horizontal line (figure
1.(b)) as shown below.

8. SUB-BRIGHTNESS Adjustment

This adjustment must be done after the White balance
Adjustment.

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]

 


background image

- 7 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

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 VOL

F

,VOL

G

KEY so that the 1th, 2th Black

Level in gray scale of PAL B/G 05CH pattern have a little
bit of difference. (See figure 2)

8-3. Sub-Tint Adjustment

This adjustment has to be done only if the picture has bad tint
otherwise, 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 same
color.

9. Deflection setting data adjustment

These adjustment will be done by Auto Adjustment
Equipment.
For manual adjustment, it is also possible by the following
procedure.

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 CH

D

E

Key to select adjustment item.

(4) Press the VOL

F

G

Key to change the data.

9-2. Adjustment

(1) Horizontal Position Adjustment

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

(2) Vertical Position Adjustment

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

(3) Vertical Size Adjustment

Select SVC02 (VA) and adjust so that the middle circle of
the Digital Pattern (480NC, 13CH) coincide with the
effective 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 horizontal
center line coincide with geometric horizontal center of the
CPT.

(2) Vertical Linearity Adjustment.

Select SVC02(V-LIN) and adjust so that the size of the
upper circle is alike with the one of the lower circle at LG
standard 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 with
the effective screen of CPT. 

2) PAL : Select SVC02(VA) and adjust so that the middle

circle of the Digital Pattern (PAL B/G 5CH) has 6~7mm
gaps from the effective screen of CPT.

(4) Horizontal Position Adjustment

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

(5) Horizontal Size Adjustment

Select SVC02(EW WIDTH) and adjust so that the outer line
of the left, right and the remotest grid will correspond to the
effective boundary surface.(The remotest grid, NTSC:
within 2.5 ~ 3.0 column, PAL: within 0 ~ 25%)

(6) Parabola Adjustment

Select SVC02 (EW PARAB) and adjust so that the vertical
line of the remotest grid at the left or right side of the screen
will be parallel to the vertical line of the center of screen

(7) Trapezoidal Adjustment

Select SVC02(EW TRAPE) and adjust so that the width of
the upper part of screen is alike with the one of the lower
part of screen. 

(8) EW UPCOR/ LOCOR Adjustment

Select SVC02(EW UPCOR, EW LOCOR) and adjust so
that the vertical line in the four corners become straight
line.

(9) BOW Adjustment

Select SVC02(HP BOW) and adjust so that the vertical line
in the four corners become straight line.

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

1th VS 2th
BLACK LEVEL have a little bit of difference.

(In case of VIETNAM MODEL  2th VS 3th)

 


background image

- 8 -

TROUBLE SHOOTING

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

1. TV FUNCTIONAL

2 TU/IF SECTION

J512, J544

 


background image

- 9 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

3. VIDEO PROCESSING

Maneuver defectiveness

Maneuver 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, 57
52, 54

35, 36, 40

50~54

46~48

4, 9, 20, 24,
 49, 62

17~23

LV762xx

4. SMPS PRIMARY

DB801(TS4805G),
DB802(D5SB60)

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

C852, R808, ZD851

 


background image

- 10 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

5. SMPS SECONDARY SECTION

DB801(TS4805G),
DB802(D5SB60)

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

C852, R808, ZD851

6. VERTICAL SECTION

, STV9326

 


background image

- 11 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

7. HORIZONTAL SECTION

L402, L403, L404, C401, C402, C412

8. SOUND PROCESSING SECTION

(LV762xx)

(LC75024/LA72702)

 


background image

- 12 -

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

9. CPT DRIVE SECTION

8

D902

D902

 


background image

- 13 -

BLOCK DIAGRAM

LGE Internal Use Only

Copyright © 2008 LG Electronics. Inc. All right reserved. 
Only for training and service purposes

LA

7

6

2

1

3

LA

7

6

2

1

3

DV

D

(F

L

A

T

 O

P

T

.)

DV

D

(F

L

A

T

 O

P

T

.)

CP

T

 D

R

IV

E

CP

T

 D

R

IV

E

FB

T

1

85V

AF

C

AB

L

HE

A

T

E

R

B+

HDT

Co

lle

c

to

r

AV

1

(V

/

R

/

L

)-I

N

US

OC

H/

P

AV

-I

N

AU

D

IO

 B

+

B+

(110

/

115V

)

(1

7V

/

11V

)

SM

PS

 

TR

A

N

S

SP

K

.

Fr

o

n

t-

AV

(2

)

SC

L

SD

A

EX

T

Vi

d

e

o-

in

RG

B

OU

T

TU

N

E

R

V_D

Y

VER

T

I

C

A

L

 AM

P

ST

V9

3

2

6

Re

a

r_A

V

(1

)

( P

H

O

N

E

)

Re

a

r_A

V

(1

)

( PH

O

N

E

)

IC

0

2

EEP

R

O

M

24C

04/

16

V-

O

U

T

H-

O

U

T

S

PK.

10.

5V

Y(

G

)/

C

r(

R

)/

C

b

(B)

SD

A

SC

L

L

C

75

02

4E

A2

/

N

IC

A

M

MO

NO

 

SO

U

N

D

 A

M

P

L

A

42

101

MO

NO

 

SO

U

N

D

 A

M

P

L

A

42

101

AC

IN

P

U

T

(1

0

0

~

2

4

0

V

)

S

T

ER

EO

,

So

u

n

d

 M

a

x

S

O

U

N

D

 AM

P.

L

A

421

0

2(

N

)

S

T

ER

EO

,

So

u

n

d

 M

a

x

SO

U

N

D

 A

M

P

.

L

A

421

0

2(

N

)

R6

1

0

5V

Op

ti

o

n

 P

a

rt

IIC

 B

u

s

 L

in

e

(Mo

no

)

ML

-O

UT

31

22

17

5

46

~

4

8

S

T

ER

EO

( ~

 A

43L

)

MO

N

O

 

( ~

A

4

3

K

 )

12

9

3

9

8

10

2

6

24V

1

ST

-B

Y

TR

A

N

S

(1

W

 O

p

t)

57

56

64

9V

Fr

o

m

IC

8

0

4

IC

804

9V

 R

E

G

IC

0

4

ST

-5

V

 R

E

G

9v

Fr

o

m

IC

8

0

4

IC

6

6

1

5V

5.

1V

IC

75

1

L

A

7

27

3

0

(S

T

E

R

E

O

 O

p

t)

IC7

5

1

L

A

72

730

(S

T

E

R

E

O

 O

p

t)

JA

0

1

H

IC

291

Ga

m

e

 P

a

c

k(G

a

m

e

 O

p

t)

HI

C

2

91

Ga

m

e

 P

a

c

k

(G

a

m

e

 O

p

t)

4,

5,

6

8

7

F

ro

m

 US

OC

V

ide

o(

G

a

m

e

)

Au

d

io

(G

a

m

e

)

JA

0

2

54

SI

F

 

ou

t

IF

3,

6

11

1

4

7

AV

2

(V

/

R

/

L

)-I

N

2

5

9

L

A

72

70

2

BT

S

C

IC

7

0

1

LI

N

-T

V

RI

N

-T

V

2
1

19

20

R/

L

 O

u

t

L-

O

U

T

R-

O

U

T

SA

W

SA

W

5

9

10

IF

 I

N

Z10

2

10

11

13

14

15

12

SI

F

 I

N

32

61

V-O

UT

(M

on

o)

18

17

18

2

7

50

Ex

t R

/

L

IN

49

RG

B

9V

SC

L

SD

A

27

26

33V

ST

-5

V

9v

Fr

o

m

IC

804

9v

Fr

o

m

IC

804

ST

-5

v

Fr

o

m

IC0

4

9v

Fr

o

m

IC

804

9v

Fr

o

m

IC

804

ST

-5

v

Fr

o

m

IC0

4

19

9

24

19

9

24

H-

Vc

c

5V

VD

D

3.

3V

Vc

c

5V

H-

Vc

c

5V

VD

D

3.

3V

Vc

c

5V

9v

Fr

o

m

IC8

0

4

14

SO

U

N

D

5V

SO

U

N

D

5V

R6

2

0

7.

5

V

R6

2

0

7.

5

V

IC

8

0

3

5V

IC

8

0

3

5V

Q4

0

2

M

D

1

803

IC

401

T

D

A

8145

IC3

0

1

V-

in

FB

P

 i

n

E

W

 OU

T

L

401

Vc

c

16

EW

-O

U

T

E

W

 IN

5v

Fr

o

m

IC8

0

3

62

IF

5V

SD

A

SC

L

23

24

SC

L

SD

A

51

SP

K

 L

/

R

 

OUT

SC

A

R

T

SC

A

R

T

R,

G

,B

8

33

FB

AVI

D

21

TV

 I

N

(S

T

)

M_R

/L

OU

T(S

T)

Mo

n

it

o

r V

 O

U

T

(S

T

)

 


background image

- 14 -

LGE Internal Use Only

Copyright ©

LG Electronics. Inc. All right reserved. 

Only for training and service purposes

EXPLODED VIEW 

170

300

112

120

530

531

532

520

101

104

600

400

150

174

320

330

331

370

360

380

390

590

591

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts 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 as
recommended 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

 


background image

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

LGE Internal Use Only

PUMP-UP

V-IN

VC

C

PUMP

GN

D

V-OUT

STAG

E

V-REF

O/

-U

P

CEM

IN

OUT

GND

S

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 SHOUL

D

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

STEREO

PLL

PILOT

PLL

PILOT

PILOT

LEVEL DET

CANCELLER

REGUL
ATOR

MODE

OUT

MATRIX

-6dB

L-R

DEMOD

SAP

DEMOD

SAP BPF

SIF DEMOD

LPF

SAP

DET

ST/SAP

SW

LPF

LPF

dbx processor

Offset
Cancell

SYSTEM

CONTROL

I2C

DECODE

Control

ST
SAP

S

pectral

RM

S

 D

E

T

Address

MUTE

L-R/SAP

MUTE

L+R

R-OUT

R-IN

L-OUT

L-IN

B

D/ S

G

R

FB

V-OUT

V-IN

5

4

2

1

8

6

7

3

10

9

11

12

Ripple
Filter

+OUT2

-OUT2

+OUT1

-OUT1

Input AMP

Out AMP

Out AMP

Vcc

Standby

IN1

PREGND

MUTE

IN2

Input AMP

Power

GND

TIMER

0

RESET

ADC

V DET

R

I/O

RESET

G

PORT 1

B

RAM

RST

FS

I

XTSEL

CPU

CPU CLOCK

CORE

VDD3

BASE

TIMER

ROM

OSD

DATA

VDD5

BUS

CLOCK

CVBS

CLOCK

VS

PET_IN

CONTROL

AFT

C_SYNC

HS

POWER_IN

PORT 0

I/ O

TEXT

TELE

PLL

BUS

HS
VS

ABL
ACL

DRIVE/CUT-OFF

OSD

SW

OSD

CONTRAS

T

OSD

CONTRAST

BRIGHT

HOR
C/ D

1/25 6

HOR
VCO

AFC1

HOR
OUT

PHASE

SHIFTER

FBP

HOR
VCC

AFC2

VER
RAMP

VER
C/D

SEP

VER

SYNC

SEP

E/W

APC1

VXO

VCO

APC2

DDS

FSC

(EHT)

1CHIP

VDD

IF

AGC

AGC

RF

SPLL

BPF

DET

900K

AMP

VIF

DET

SOUN

D

DET

VIDE O

AMP

VIDEO

TRAP

VCO

AMP

FM

DET

FM

LI M
AMP

BPF

MATRIX

RGB

CLAMP

COLOR

TINT

COLOR
CLAMP

DC ADJ

SW

SEOAM

DECODER

CLMP

PAL SW

DEMO

DC

REST

BS
SG

SHARP

DL

BPF

SW

V/Y

ADC

YC SW

TRAP

CLMP

SW

VIDEO

DC
VOL

SW

SW

TONE

RGB SW

EXT

CONTRAST

EXT RGB

DRIVE

CUT-OFF

SW

IF

NC

30V

NC

5V

SDA

SCL

CS

NC

AGC

16bit DAC

(MONAURAL)

SRC

(STEREO)

16bit DA

C

(A2/DQPSK)

DEMODULATOR

DECODER

NICAM

ADC

PGA(AGC)+10bi t

IIC

PLL

OSCILATOR

AMP

98.304MHz

18.432MHz

8

14

13

9

12

11

10

1

2

5

7

REG

BUFF

MODE

SELECT

DET

AL

C

AL

C

6dB

BUFF

BU

F

F

BUFF

IN

OUT

GND

S

LG

DSGD.

CHKD.

TITLE

UNIT

DWG NO.

SCALE

Date

mm

APPD.

SCL

SDA

EW

GAME/FM_DATA

GAME_CLK/FM_CLK

SPK_L

MUTE

EYE

MUT

E

EW

POWER/FM_CE

IR

FRONT/SIDE-R

REAR-R

REAR-L

FRONT/SIDE-L

SPK_R

REAR-L

SIDE-R

SIDE-L

SIDE-V

FRONT-V

FRONT-L

REAR-L

VER-OUT

HOR-OUT

FBP

B-OUT

G-OUT

R-OUT

ABL

R

-OUT

G

-OUT

B

-OUT

VI

F

_

IN

2

SDA

SCL

SDA

IR

SDA

SCL

TV-R

VIF_IN1

REAR-R

MNT_L-OUT

MNT_R-OUT

FB_IN

AV1-ID

DVD-Y/G_IN

DVD-Cb/B_IN

RESE

T

HOR-OUT

RF_AGC

MNT_L-OUT

EXT_R-IN

EXT_V-IN

TV

-L

TV

-R

GAME_ID//FM_CE

GAME_DATA/FM_DAT

A

EY

E

DOWNLOAD

DOWNLOAD_CLK

DOWNLOAD_DATA

GAME_CLK/FM_CL

K

DVD-Cr/R_IN

REAR-V

MNT_V-OUT

HS

FBP

HS

VS

FRONT/SIDE-V

D

V

D-Cb/B_IN

FB

_

I

N

D

V

D-Cr/R_IN

D

V

D-Y/G_IN

F

B

_OUT

D

V

D-Cr/R

DV

D

-Y

/G

D

V

D-Cb/B

FRONT/SIDE_L

EHT

NICAM_RESET

VIF_IN2

FRONT-R

REAR-V

RESET

NICAM_RESET

FM_ON_OFF

DEGAUSS

ABNORMAL

SC

L

SD

A

A

V

1_ID/DOWNLOAD_DATA

D

E

GAUSS/FM_ON_OFF/USB_SW/DOWNLOAD

KEY

S

PK-L

S

PK-R

VIF_IN1

RF_AGC

FRONT/SIDE-V

SC

L

SD

A

EXT_V-IN

SD

A

SC

L

MNT_L-OUT

REAR-V

FRONT/SIDE-V

REAR-V

POWER/FM_C

E

EHT

PO

W

E

R

/F

M

_

C

E

VER-OUT

VS

ABNORMA

L

POWER/FM_CE

DVD-Y/G

DVD-Cr/R

DVD-Cb/B

SIF_OUT

PAL/NTSC

SIF_OUT

M

N

T_R-OUT

MNT_V-OUT

FB_OUT

TV-L

EXT_L-IN

EXT_R-IN

KE

Y

EXT_L-IN

ABL

IR

SCL

GID/SW/DL

POWER

TV-R

TV-L

TO DG COIL

P802

1

2

STV9326

IC301

1

2

3

4

5

6

7

D815
TVR06J

RL80 1

6920VB1001E

10 0

R906

1.6/2W (RF

)

FR401

30K(RN)

R311

0.1u F

C210

560

R524

3.9K

R510

100u F
10 V

C28

1N4148

D405 *

2.7K

R307

P6

330uF
10V

C108

18K

R108

0.01uF

C534

1N4148

D902

4.7K

R803

1N4148

D403

1.5K/0.5

W

R919

1N4148

D603

3.3K

R501

1.5/0.5W

R310

10 0

R562

470 p

C229*

75

R100*

47

R401

0.5W

1.0/0.5W
(RF)

R303

100K

R150

0.1uF
50 V

C527

P01

1

2

3

C607*

10uF
16V

T/ W

L212

100

R564

470P/500V

C303

P119

1

2

3

4

5

0.47uF
50V

C524

220

R516

P601

1

2

3

10 K

R60

0.01

C548*

1uF
50V

C760

0.01uF

C510

680

R72

1N4148

D604

T/W

R614

1000uF
16 V

C850

1K

R565

470p

C225*

1N4005

D302

T4AL250 V

F801

470P

C233

10 0

J554

1000uF
16 V

C826

1uF
50V

C757

ABL

0.1u F
50 V

C517

0.05/0.5

W

(RP )

FR501

MONO

J636

100uF
10 V

C518

C51
82P

123A

FB905*

0.1u F

C506

10 0

R505

150

R404

180/2W
(RS)

R315

T/W

L90 4

10 0

J509

470p

C222*

P201

1

2

3

4

5

6

R66

3.3K

0.01u F

C633

P703

1

2

3

100uF
10V

C833

T/ W

L903

C295

10uF
16 V

1000P

C107

T802

6200JB8008G

150-06 T

  T804

 

150-F06T

1

2

3

4

BF421

Q403

10K

R618

12K

R522

4.43MHz

X501

0.047uF
MYL

C533

1N4148

D501

(10u)

J/W

L216

390

R922

1/7W

R801

75

R252

CHOKE

82u H

L80 2

4.7u F
50 V

C415

470u F
35 V

C309

125-022R

FB801

620/0.5W

R302 *

1.5K

R409

1.6 K

R18

CH+(PR+)

SW16

220

R69

T/ W

L901

470p

C223*

2UH

FB201

1500P

C516

10 0

R506

1.2K

R17

560P/2KV

C417

2SC6092(SS/ULTRA)
2SC6093(Normal/FLAT)

Q402

47K/2W
(RS)

R804

T/W

L21 1

SK901

KIA78R09API

IC804

1

2

3

4

C56*
330P

VOL-

SW13

P602

1

2

3

4

75

R250

P02A

1

2

3

4

5

1/2W

150

R236

100K

R109

1000P/1KV

C813
CK

C605
47uF
16V

RU3AMV

D813

10uF
16V

C756

L-H P

18K(RN)

R301

18K/2W
(RS )

R912

C26
330u F
10 V

0.1u F

C211

CH-(PR- )

SW15

T/ W

L224

HIC291

1

2

3

4

5

6

7

8

470K

R858

0. 5

P401

1

2

3

4

4.7uF
250 V

C901

10.5V

10uF
25 V

C407

9.1V

ZD502*

0.68uF
50 V

C312

680

R531

1.2/0.5W(SS CPT)*

FR932*

SW801(SUB:SW1801)

1N4148

D805

0.01uF

C767*

T/ W

L225

P902

1

2

3

4

5

6

7

8

9

C2330- Y

Q901

47uF
16 V

C308

75

R249

5.1 V

ZD804*

0.01uF

C764

4.7u F
50V

C242

(PHONE)

JA01

2

3

4

5

6

7

1

PC17L1

IC802

1

2

4

3

( RC)

8.2M/0.5

W

R814

51 0

R530

RU3AMV

D826

1.5K/0.5W

R920

39/2W
RS

R132

T/ W

L221

100K

R408

GAME-VIDE

O

0.01uF

C806 *

470P

C231

T/ W

L902

P03A

1

2

3

4

10 0

R760

270P

C902

GAME-AUDI

O

1000uF
35 V

C831

0.05/0.5

W

( RP)

FR825

4.7u F
250V

C540

15K

R312

16V

10u F

C201

Q672
2SC5343

(MPP)

153/2.0K

V

C414

10K

R410

CPT EARTH

P910

1

10u

L230

C103 M

Q301

103

C538*

(PP)

223/200V

C514

AFC

75K

R705

4.7K

R58

0.1uF

C212

33K/0.5W
(RS)

R110

P101

1

2

3

75K

R706

VD801

TVR621D

P1

1K

R154

18K

R617

3900u F
MYL

C301

300

R513

36K(RN)

R518

10 0
51 0

R523

100u F
10 V

C409

1/2W

150

R235

1N4148

D847

Q10

C3198Y

P801

AC-I N

1

2

100u F
10 V

C853

10 0

J 501

100u F
10 V

C511

1000P

C805

1kV

P902-1

1

2

3

4

5

Q845
C5343Y

1

2

3

330

R504

9.1V

ZD504*

240K

R420

22K(RN)

R512

0.1uF

C612

100V

9.1V

ZD503*

0.01u

C855 *

100

R921

10K

R607

1K

R615

36K

R552

10u F
16V

C763

C30

0.01

123 A

FB805*

1u F
50 V

C759

10 0

R916

4.7 K

R831*

470P

C234

2.2M/0.5

W

R902

1.8K

R908

0.05/0.5W
(RP )

FR301

10 0

R761

1.0/0.5W
(RF)

R304

100 P

C130*

10UH

L502

C102M

Q813

R-HP

L-SPK

330u F
450V

C803

0.01uF

C535

5.1 V

ZD102

SFAF504G

D824

0.033u F
MYL

C17

62 0

R20

100uF
35V

C307

270P

C904

2K

R616

D2SB60 (Normal/FLAT)

DB801
TS4B05G(ULTRA/SSlim)
DB802

2K

R612

12K(RN)

R519

1N4003

D901 *

75

R251

0.47u F
50V

C531

CK

470P/1K V

C821

KIA78L05B P

IC04

1

2

3

4.7 K

R82

510

R553

103

C106*

10UH

L217

1N4148

D303

82K

R306

100K

R22

100UF
10 V

C832*

10u F
16V

C110

T/W

L223

TV/VIDEO(MENU)

SW11

163-051F(3P)

TH801

TH802
163-054D(2P)

1.2/2W
(RF )

FR403

4.7K

R23

75

R211

0.1u F
50 V

C702

1000P

C294

43 K

R308

T/ W

L222

C2330-Y

Q902

39 0

R905

1N4148

D601

CPT

1uF
50V

C762

0.01u

C601*

VOL+

SW14

220P

C236

1M

R42

MENU(OK

)

SW12

10UH

L218

1N4148

D602

470P

C232

1uF
50V

C761

100 K

R11

K7260M(PAL)

Z111
M1971M(NTSC)

1

2

3

4

5

15K

R554

P5

BA282

D111

33V

ZD103

12K(RN)

R305

EBJ3480670 1

T402

1

2

3

4

6

5

7

8

9

10

P902-2

1

2

3

4

10K/0.5W
(RS)

R550

2.0K/0.5

W

R403

220P

C237

470p

C226*

0.1u F
275V

C802

T/ W

L3

EU1ZV

D804*

A1266

Q601

08/02/29

17:01:33

CW81A.cir/001.sht

220

R65

10 0

R41

47K/2 W
(RS)

R805

1200P/2K V

C908

0.1u F
50 V

C704

2.2u F
50 V

C16

2.2

R604

T/W

L21 3

2200P/4KV

C843

0.1uF
MYL

C314

0.22u F
MYL

C310

100K

R621*

100u F
10V

C40

10K/0.5 W

R407

180 V

47K

R826

( CK)

470P/1KV

C812

68 0

R1

120

R555

39 0

R915

4.7K

R825

100P

C131*

1u F
50 V

C313

18K/2W
(RS )

R923

3.9K

R509

2.2K

R113

5.6/2W
(RS)

R620

4.7K

R21

2200u F
25V

C311

270 P

C907

22K(RN)

R313

220u F
160V

C814

220

R514

100u F
16 V

C766

TVR06J

D505

220u F
10 V

C246

0.33uF
50V

C15

C3228

Q401

56K/0.5 W

R547

CK

470P/500V

C404

75

R226

9.1V

ZD412*

10000p F

C322

0.01uF

C20

1000P

C804

1k V

82 K

R423

2.2K

R112

C2330-Y

Q903

10uF
16 V

C765

1N4148

D502*

J61

7

56 0

R19

39

R515

0.01uF

C507

1uF
50V

C758

4.7uF
50 V

C243

3.9K

R508

4.7K

R111

TVR06J

D301

125-022 R

L804

LED

LD11

2

1

100uF
160 V

C835

0.047uF
MYL

C306

470P

C235

39 K

R502

220P

C541

1uF
50V

C504

30 0

R421

4.7K

R832

1.5K/0.5

W

R918

100uF
10V

C526

J637   

*

C523
100uF
16V

IC02

24C04/24C16

1

2

3

4

5

6

7

8

0.01uF

C101

8.2/0.5W

R873

100

R563

10u

L231

10u F
50V

C103

30 K

R532

330uF
25V

C602

18K/2 W
(RS )

R917

100

R507

T/W

R556

10uF
100V

C408

75 0

R16

220K

C215*

R-SPK

100P

C19

C50
82P

*
56 0

R535

KIA7805AP I

IC803

1

2

3

J116
T/W

4.43MHz TRAP

Z601

0.01uF

C116

PA01

1

2

3

151-C02B

H-DRIV E

T403

1

2

3

4

FRONT AV

JA02

0.01uF
MYL

C432

1N4148

D411

62 0

R462

330

R463

1K

R461

3.9K

R460

100K

R459

6mH

L401

26.5u H

L402

334/400 V

C412

273/630 V

C406

RS4FS

D406

RU4AM

D407

20K

R455

6.8K

R309

IC401

TDA8145

1

2

3

4

5

6

7

8

1K/1W(RS )

R416

120 K

R456

5.1 K

R414

2.7K/2W
(RS)

R406

2.7K/2W(RS )

R316

C551*

0.068uF
MYL

C305*

22uF
50 V

C509

3.0K/2 W
( RS)

R402*

J10 6

C5343

Q16

J117
T/W

0.02/0.5W
(RP )

FR816

15K

R451

1K

R450

5.6K

R517

39K

R457

0.047u F
MYL

C434

473/630 V

C401

450u H

L404

334/400V

C402

1.6m H

L403

1K

R845

J811
T/W

4.7K(RN )

R844

1K

R841

9.1 V

ZD851

39K

R843

0.022uF
MYL

C818

47

R840

Q801
C5343

3.9K

R835

47uF
10 V

C828

91K(RN)

R815

91K(RN)

R816

30K(RN)

R842

KA431

Q840

1u F
250V

C847

T/ W

R884

0.022u F

C502

33 0

R537

C512*

1K

R13

2.2u F
50V

C13

JA01

(DVD)

0.1uF

C613

2.2

R601

2K

R611

2.2

R603

4.7uF
50V

C603

ST

J611

C608

2.2uF
50V

2.2

R602

100

R609

2K

R605

C611
47uF
25V

0.1uF

C614

0.018uF
MYL

C609

0.1uF

C606

0.018uF
MYL

C604

4.7uF
50V

C610

10 0

J51 7

9V

9V

9V

9V

9V

9V

S-Vcc

S-Vcc

5V_1

5V_1

5V_1

5V_1

5V_2

30 V

30V

J13
T/W

ST-5 V

ST-5V

ST-5V

ST-5V

ST-5V

100K

R622*

9V

62 0

R528

J227
T/W

5V_1

ST-5 V

50V

1uF

C648

50V

4.7uF

C676

22uF
50V

C681

LA72702

IC605

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

1uF
50V

C666

1uF
50V

C638

1uF
50V

C670

2.2uF
50V

C657

47uF
10V

C691

10uF
50V

C675

10uF
50V

C672

4.7uF
50V

C656

4.7uF
50V

C654

22uF
50V

C682

4.7uF
50V

C642

0.1uF

C645

0.1uF

C678

100

R666

100

R665

4.7 K

R678

10UH

L604

5V_

1

JA01

(FULL SCART)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

100

R503

75

R203

10 0

R202

100K

R207

240K

R208

1uF
50V

C22

IC601

10 0

R542

10 0

R543

R250
T/W

100

R561

100uF
10V

C521

1uF
50V

C675

1uF
50V

C672

39 K

R539*

P551

B

@value

10

9

8

7

6

5

4

3

2

1

P551

A

@value

10

9

8

7

6

5

4

3

2

1

J568
T/ W

J222
T/W

J224
T/W

J225
T/W

J226
T/W

R415
T/W

330P

C688

330P

C687

2.2uF
50V

C683

0.1uF

C633

0.1uF

C631

560K

R667

5V_1

0.1uF

C673*

5V_1

0.01uF

C632*

0.01u F

C630*

47uF
10 V

C681

0.01uF

C684

0.01uF

C668*

47uF
10 V

C685*

0.01uF

C662*

0.01uF

C661

0.01uF

C680

0.01uF

C645*

0.01u F

C631

1.

5

V

3.3V

1.5V

0.1uF

C635

47uF
10 V

C670

0.1uF

C634

0.1u F

C665

0.1u F

C667

47uF
10 V

C666

T/W

R631

12pF
CC

C689

12pF
CC

C690

18.432MHz

X661

1M

R630

SIF

SIF

10k

R668

10 0

R666

100

R665

10K

R661*

10 K

R664*

330p

C653

1K

R662

1k

R633

4.7uF
50 V

C672

4700p

C687

4.7uF
50V

C675

4700p

C688

1k

R632

Z602

4.5MHz

1

3

2

J721*
T/W

P211A

1

2

3

4

IC81 0

W6553A(MONO)
W6554A(STEREO)

1

2

3

4

5

6

7

220
1/2 W

R838

6.8K

R807

30

R810

J842
T/W

D845
UF4005

22uF
50 V

C840

0.1u F
50 V

C841

0.01uF
MYL

C852

1000pF
1.6KV

C817

221/2KV

C859*

?

C807*

?

C808*

125-022K

FB810

125-022K

FB844

J 843

T/W

75 K

R839

39K(RN)

R806

3300p F
MYL

C842

15 V

ZD846

5.6K

R808

IC501

LV762xx

EXT-R_IN

1

EXT-L_IN

2

INT-V_IN

3

VCC[5V]

4

Video/Chroma/Vertical

EXT-V_IN

5

NC/MONI-R

6

YC-Y

7

YC-C[FB_IN]

8

1CHIP_VDD[3.3V]

9

DVD-Y[G_IN]

10

CR_IN[R_IN]

11

4.43MHz

12

CB_IN[B_IN]

13

APC-FILTER

14

Chroma

FSC[EHT]

15

EW

16

VEROUT

17

V-RAMP

18

VCO_IREF

19

HOR_VCC[5V]

20

AFC-FILTER

21

Horizontal

HOR_OUT

22

FBP

23

CPU_VDD[ST-5V]

24

FILT

25

CPU_VDD2

26

P00

27

P01

28

P02

29

P13

30

P14

31

P15

32

FM_OUT[MONI-L]

64

F

M

-FILTER

63

IF_VCC[5V]

62

VIDEO_OUT/SVO

61

V

IF_AGC

60

APC-FILTER

59

RF_AGC

58

VI

F

_

IN

1

57

VI

F

_

IN

2

56

IF_GND

55

S

IF_OUT

54

APC-FILTER

53

SI

F

SIF_IN

52

S

PK-R_OUT

51

S

PK-L_OUT

50

RGB_VCC[9.0V]

49

R

_

OUT

48

G

_

OUT

47

B

_

OUT

46

AB

L

45

1

CHIP_GND

44

C

PU_GND

43

F

ILTSLC

42

R

ESET

41

P07

40

P06

39

P05

38

P04

37

P03

36

P17

35

P16

34

P11

33

4.7u F
50 V

C280

??

C845*

TU101
6700MF0018A(CIS)
6700MF0018B(PAL)
6700NFNS11E(KOREA)
6700NFNS11F(NTSC FR TYPE )
6700NFNS11G(NTSC PHONE TYPE)
6700NFNS11H(NTSC DIN TYPE)

100u F
10 V

C636

100uF
10V

C615

1.5V REG.

IC606

1

2

3

3.3V

1.5 V

10 K

R541

2200P/500 V
CK

C421

330/0.5W

R441

J403
T/W

0.1u F
50 V

C677

5V

_

2

5V_1

5V_1

5V_1

T/W

R853

J41 3
T/ W

0.022uF
50 V

C574

0.01u F

?

1000 p

C549*

330 K

R538*

10 0

R511

1.2UH

L528

5.1M

R684

2.2M

R654

0.1uF

C664

C114*
0.1uF

J83 0
T/ W

J402
T/W

J 303
T/ W

J 306
T/W

J30 1
T/ W

J 401

T/W

60uH

L405 *

?

L406 *

J 404*

T/W

J81 4
T/ W

0.1uF
275V

C816

123 A

FB817*

?

C839

J81 0
T/ W

6322A00030 A

TH803*

J 906 T/ W

J903
T/ W

J 905
T/W

1N4003

D903

J 907

T/ W

J620
T/W

?

C627*

J607
T/W

30P

C552*

IC651

LC75024E

A

V

DD33

1

A

OUT

R

2

AVS

S

3

LRVREF

4

AVDD33

5

NC

6

AOUTL

7

AVDD33

8

VRT

9

VCO

M

10

VRB

11

SI

F

2

12

AVS

S

13

A

V

DD33

14

AVDD33

15

A

VSS

16

AVDD15

17

A

VSS

18

XVS

S

19

XI

N

20

XOU

T

21

AVDD33

42

MRVREF

41

AVSS

40

NC

39

AVDD33

38

TESTB1

37

TESTB0

36

TEST

35

NC

34

NC

33

NC

32

NC

31

IOVSS

30

IOVDD3

3

29

RSTB

28

SD

A

27

SC

L

26

SA

25

DVDD15

24

DVSS

23

XVDD33

22

5V_1

J720
T/W

J705
T/W

J281
T/W

J704
T/W

T/W

J673

T/W

J703

T/W

J641

T/W

J652

T/W

J642

1K

R633

1K

R632

T/W

J651

T/W

J643

T/W

J653

T/W

J672

J527
T/W

T/W

R40

T/W

J562

J519
T/W

T/W

J50 8

J112
T/W

T/W

J111

10UH

L663

J633*
T/ W

10UH

L66 2

T/ W

R654

T/W

J645

T/ W

J641

T/W

J648

T/W

J642

T/ W

J647

47uF
10V

C650

J2 2
T/ W

J23
T/ W

T/ W

J525

J55 5
T/ W

J54 1
T/ W

T/W

J109

4.7uH

L503

T/W

J101

T/W

J558

T/W

J552

T/W

J201

T/ W

J557

T/ W

J507

0.01uF

C562*

0.01uF

C563*

0.01uF

C564*

0.01 8
MYL

C542*

0.1
(PP)

C545

?

R521*

T/W

J524

T/W

J560

9.1V

ZD407*

T/W

J 513

T/W

J 528

T/W

J 532

T/W

J 504

4.7 K

R566

T/ W

J706

T/W

J707

T/ W

R701

T/W

J521

T/ W

R704

T/W

J503

T/W

J506

T/ W

J2 4

T/ W

J522

T/W

J55 9

0.01uF

C29

T/ W

J542

T/ W

J702

T/W

J 625

T/ W

J624

T/ W

J 515

T/ W

J512

T/ W

J544

T/W

J546

J535
T/ W

0.01u F

C528*

T/ W

J537

T/ W

J543

T/W

J520

T/W

J510

T/W

J567

J286
T/ W

J564
T/ W

J520
T/ W

J563
T/ W

T/ W

C283

J285
T/ W

T/ W

J282

T/W

J292

T/W

J 287

T/ W

J288

T/ W

J549

J637
T/W

T/ W

J 289

T/W

J 290

J553
T/W

T/ W

R536

T/ W

J28 3

T/ W

J284

J291
T/W

J286
T/W

10 0

J53 4

T/ W

R567

T/ W

J281

T/ W

R711

J534
T/W

J63 8
T/ W

J646
T/ W

100uF
10 V

C857*

3.3V REG.

IC603

1

2

3

J551
T/ W

J804
T/ W

J70 9
T/W

510

R247

A1266

Q241

T/ W

J280

T/W

J687

T/ W

J672

T/W

J550

T/ W

R780

T/W

J565*

T/W

J818

0.1uF

C283

10uH

L501

10 0

J511

T/W

J54 0

J55 6
T/ W

J52 6
T/ W

47 K

R318

5V_1

J81 9
T/W

J634
T/ W

J 523
T/W

J 664 *
T/ W

33/2 W
( RS)

R610 *

100uF
10V

C699*

J665
T/W

5.1V

ZD601*

0.33uF

C630

100pF

C639

T/ W

J646

10UH

L66 5

T/W

J650

J647
T/W

3.3V

47uF
10 V

C691*

47uF
10V

C692*

10UH

L664

125-022R

FB601

T/W

J110

J3
T/W

2.7K/2W
(RS )

R405

33pF/
10pF

C520

33pF

C503

33pF

C546

75 K

R222

75 K

R221

T/W

R223

J 826
T/ W

J 626
T/W

J63 5
T/ W

J 601
T/W

J102 *

T/ W

0.01uF

C105

390

R105

0.01uF

C104

22

R104

1.2K

R103

100

R101

0.82

L102

0.01uF

C115

C3197

Q101

3.6K

R102

47uF
16V

C111

9V

J40 5
T/W

TVR06J

D304

470uF
10V

C525

C102M

Q502

C102M

Q111

CP12

0.01uF

16V

CP13

0.01uF

16V

LP05
10u H

LP03
10uH

CP07

0.01u F

50 V

RP10

1K
1/10 W

5%

CP20

47uF

10 V

RP09

1K

1/10W

5%

ICP03

S1117-18PIC

1

GND

2

OUTPUT

3 INPUT

P551B

3

5238-1010

1

2

3

4

5

6

7

8

9

10

CP30

47u F

10 V

LP04
10uH

CP04

47pF

50V

CP34

0.1u F

50 V

RP14 10

1/10W 5%

RP1

3

10

1/10W 5%

CP19

0.01uF

50V

CP25

47uF

10V

RP28

10

1/10W

5%

QP02
2SC3875S

E

B

C

ICP04

KA75270Z

2

G

3 O

1

I

QP01

2SC3875S

E

B

C

CP33

0.1uF

50V

CP08

47uF

10 V

CP31
0.01uF
50 V

CP18

47pF

50V

LP06
10uH

CP35

0.1u F

50 V

RP11 100

1/10W 5%

CP10

330uF

10V

CP05

47pF

50 V

35238-1010

P552B

1

2

3

4

5

6

7

8

9

10

CP29

0.01uF

50 V

CP27
0.01uF
50V

RP30

1K

1/10W

5%

CP01

22pF

50V

RP03

100

5%

1/6W

CP23

0.01uF

50V

RP31

22K

1/10W

5%

CP28

47uF

10V

ICP02

S1117-33PIC

1

GND

2

OUTPUT

3 I NPUT

RP01

220

1/6 W

5%

CP11
0.01uF

16V

RP17

10

1/10W

5%

RP

1

2

10

1

/10W

5%

CP06

47pF

50 V

XP01

20.25MH z

RP15

10 K

1/10 W

5%

ICP01

PVP9390A-QG-A1

1

XOUT

2

XI

N

3

VSS18_

1

4

VDD18_

1

5

GPO0

6

SE

L

7

OUT3

8

OUT2

9

OUT1

10

VSS33DA

C

11

VDD33DA

C

12

FSW

13

IN 3

14

IN 2

15

IN 1

16

VDD18ADC

17

VSS18ADC

18

CVBS1

19

TEST

20

CVBS2

21

TM

22

CVBS3

23

CVBS

4

24

VSS33ADC

25

VDD33ADC

26

YIN

27

UIN

28

VIN

29

RESE

T

30

VDD18_

2

31

VSS18_

2

32

POR

33

GPO2

34

I2C1

35

I2C2

36

SDA

37

SCL

38

INTR

39

VDD33PAD

40

VSS33PAD

41

VSP

42

HSP

43

GPO1

44

CLKOUT

CP32

47uF

10 V

CP16

47pF

50V

RP08

10 0

1/10 W

5%

CP02

22pF

50V

LP02

10uH

CP17

47pF

50V

CP21

47uF

10V

RP02

220

1/6W

5%

RP05

1K

1/10W

5%

CP03

47pF

50V

RP04

10 0

1/6W

5%

LP01

10uH

RP06 100

1/6W 5%

CP36

0.1uF

50 V

RP34

1K
1/10W

5%

RP33

1K

1/10W

5%

RP07

22 K
1/10W

5%

0. 1
MYL

C515*

100p

C245*

0.1uF

C529

R904

R913

C2330- Y

Q904

R706
T/W

R711
T/W

R317*

J 864
T/ W

J84 1
T/ W

J 825

T/ W

J82 2
T/ W

J82 0
T/W

J812

T/W

T803

61709MC016D

J 813

T/ W

J 801
T/ W

J80 2

T/W

J 803

T/ W

J80 8

T/W

J80 6

T/ W

J807

T/W

J809

T/W

T/W

J71 2

J708

T/W

T/W

J690

T/W

J698

T/W
J66 7

J 656
T/W

J602

T/ W

J62 1

T/ W

J62

2

T/W

J623

ST

J60 5

T/ W

J108

T/ W

J606

J604

T/W

T/W

J609

10 0

J51 6

T/ W

J518

J409

T/W

J22 0

T/W

J22 1

T/W

J22 3

T/W

J15 1

J6

LA72730

IC751

LI

N

-1

1

LI

N

-2

2

LI

N

-3

3

RI

N

-1

4

RI

N

-2

5

RI

N

-3

6

VI

N

-1

7

VCC

8

VI

N

-2

9

GND

10

VI

N

-

3

11

R_MONITO

R

12

L_MONITOR

16

SCL

13

SDA

14

NC

15

ALC_FIL

T

17

VIDEO_OUT

18

AUDIO_R_OUT

19

AUDIO_L_OUT

20

VIN-T

V

21

BIAS_FILTER

22

RIN-T

V

23

LIN-T

V

24

A1275Y

Q103

30K

R114

C102M

Q104

T/W

J203

J502

T/W

KIA78R05AP I

IC806

1

2

3

4

J829

T/ W

J82 8

T/ W

T/W

R811

2200u F
25 V

C838

TVR06J

D806

125-022 R

FB808

470P/500 V

C836

CK

180/2W
( RS)

R314

T/ W

J539

100pF

C532

1K

R606

T/ W

J29 3

9V

TH402*
300oh m

TH401*
300oh m

SCREEN

5V

510(14")

FOCU

S

*

180V

*

26 V

GAME/FM DATA

V2

D

GAME ID/FM CE

L2

G

G

G

R2

Option

MONO:330/0.5W

NC

GND

W/O HP

SDA

11

SCL

12

CPT BOARD

MON

O

<L-IN>

10

<R-IN>

<V-OUT>

Headphone

<L-OUT>

14

<B+ : 115V>

STEREO:510/0.5 W

13

<MONO 4PIN OPT.>

OCP

GND

180V

HEATER

MONO OPTION

9V

B

EBY41778501

G

* : OPTION

R

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"

)

26 V

D833*

<R-OUT>

HEATER

<V-IN>

COL

12 V

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

VIDEO/NC

390P(14")

G

GN

D

390P(14")

R

AUDIO/FM ON_OFF

510(14")

ANODE(HV)

GAME/FM CLK/IR

510(14")

KEY

A

VERSION 1.11 2008.02.26

PO

W

ER

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+

1.88V

MENU/OK

VOL+/VOL+

T-SOUND

NT/PAL

T-PICTURE

TV_VIDEO/MENU 1.34V

??

VOL-/VOL-

<DVD_R-IN>

<DVD_L-IN>

LA42101 (10W MONO MAX)

LA42102N(15W+15W MAX)

<PAL>

ABN

NORMAL

<NICAM/A2 OPT.>

<DOWNLOAD OPT.>

BTSC

<AV STEREO OPT.>

<NTSC>

W/TEXT

W/O TEXT

NTSC

PAL

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-IN

Cr-IN

GND

5V

R-OUT

G-OUT

B-OUT

FB-OUT

SD

A

SC

L

VS

HS

GN

D

GN

D

GN

D

TV_VIDEO

AV

1

AV2

<PIP OPT.>

<W/PIP OPT.>

<W/PIP OPT.>

<IC VERSION>

BPF

Slave Address=0x38

<W/O BPF OPT.>

<W/FM TX OPT.>

MNT_R

MNT_L

GND

GND

D

NC

S/GND

VI N

SS/AD J

FB

BD

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

MODE

INPUT

VIN1

REAR

VIN2

FRONT/SIDE

VIN3

GAM

E

VIN-T V RF

MONO LV76210

LV76220

LV76230

PAL/NT

SOUNDIC

SYSTEM

PAL/NT/SECAM

COMBEWTXT Surround

A2+NICAM BTSC

LV76211

LV76221

LV76231

LV76233

LV76212

LV76222

LV76213

LV76232

LV76223

LC75024

LA72702N

AV-ST

RF-ST
IC

*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. >

GN

D

GN

D

IR

KEY

POWE

R

ST-5

V

GND

EYE

GND

9V

NC

<MONO/AV ST OPT. >

<W/O RELAY>

<W/O NICAM>

<NICAM>

W/O ST-BY 1W

W/ 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

AV

1

GN

D

AV

2

GN

D

GN

D

RF

SC

L

SD

L

VS

HS

FB

0

RI

5V

RO

BO

GO

BI

GN

D

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)

.

 


background image

May,  2008

Printed in Korea

P/NO : MFL41322905