manual TV LG 14"14fu7rb-t2

COLOR TVSERVICE MANUAL

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

CHASSIS : MC-059D

MODEL : 14FU7RBMODEL : 14FU7RB-T2

North/ Latin America http://aic.lgservice.comEurope/Africa http://eic.lgservice.comAsia/Oceania http://biz.lgservice.com

Aug., 2008Printed in ChinaP/NO : MFL40183504

Internal Use Only

- 2 -

CONTENTS

CONTENTS ............................................................................................... 2

SAFETY PRECAUTIONS...........................................................................3

SPECIFICATIONS ......................................................................................4

ADJUSTMENT ...........................................................................................6

TROUBLE SHOOTING.............................................................................11

BLOCK DIAGRAM...................................................................................15

PRINTED CIRCUIT BOARD ....................................................................16

EXPLODED VIEW....................................................................................18

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

LGE Internal Use Only

- 3 -

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



- 4 -

General specification

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

Item

Receiving System

Available Channel

Input Voltage

Market

Screen Size

Aspect Ratio

Display Method

Tuning System

Operating Environment

Storage Environment

Specification

NTSC M (AV 3.58)

NTSC M (AV 3.58)/ PAL M/N

PAL BG, DK, I/NTSC M (AV 3.58/4.43)

SECAM DK

1) VHF : E2 ~ E12

UHF : E21 ~ E69

CATV : S1 ~ S20

HYPER : S21 ~ S41

2) VHF: 02 ~ 13CH (12CH)

UHF : 14 ~ 69CH (56CH)

CATV : 01~125CH (113CH)

AC110 ~ 240V@50/60Hz

AC110 ~ 240V@50/60Hz

Mideast,Africa, Middle South America

Conventional 14

4: 3

CRT

FS

FVS 100 Program

1) Temp : 0 ~ 45 deg

2) Humidity: Below 85 %

1) Temp: -20 ~ 60 deg

2) Humidity: Below 85 %

Remark

Mideast/Africa

L America/Philippines/Taiwan

China/Indonesia/Thai/Vietnam

CIS

PAL MODEL

NTSC MODEL

Mideast/Africa

Middle South America

NTSC MODEL

PAL MODEL

No.

1

2

3

4

5

6

7

8

9

10



ScopeThis specification is applied to the MC-059D CHASSIS ColourTV.

SpecificationEach part is tested as below without special appointment.1) Temperature : 25 ± 5°C (77 ± 9°F), CST : 40 ± 5°C2) Relative Humidity : 65 ± 10%3) Power Voltage :

4) Specification and performance of each parts are followedeach drawing and specif ication by part number inaccordance with BOM.

5) Warm up TV set for more than 20min, before themeasurement.

Test Method1) Capacity: It follows the TV QC Standard of LGE2) Other standard.

Standard Input Voltage

110 ~ 240V@50/60Hz

110 ~ 240V@50/60Hz

RemarkMarket

Mideast/Africa

Middle/South America

Compliance

Safety: As CB standand (IEC60065)

EMC: CE standard (EN55020, EN55013)

Market

Mideast/Africa

Middle/South America

- 5 -

Features and Function

Feature

Key

Station

Picture

Time

Special

Audio Input

Local Key

Remocon

Audio program

Manual program

Program edit

Favorite channel

PSM

CSM

Clock

Off time

On time

Auto Sleep

Language

Input

Child lock

Blue back

Specification

1 Rear (Mono)

6EA/Front: ON/OFF, MENU, Vol (F, G), PR(E, D)

7EA/Front: ON/OFF, MENU, OK, Vol (F, G), PR(E, D)

LG Code

System

Storage from

Normal search

Turbo search

Storage

System

Channel

Search

Name

8CH Memory

Dynamic

Standard

Mid

Game

User

Standard

Reddish

Greenish

Bluish

--:--

--:--/On/Off

--:--/Pr/Vol./On/Off

On/Off

English

French

Parsi

Arab

TV/AV

On/Off

On/Off

Remark

Non regulation region

Regulation region

PAL MODEL BG/I/DK

PAL MODEL BG/I/DK

V/UHF or Cable

" or "

Detail drawing Control item:

contrast

Brightness

Colour

Sharpness

Settting now time

Setting shut time

Setting turn on

No signal power off action

English

France

Parsi

Arab

No.

1

2

3

4

5

6



Item

1. Scope of ApplicationThese instructions are applied to MC-059D Chassis.

2. Notes1) Because this is a cold chassis, it is not necessary to use an

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

2) Adjustment must be done in the correct order.3) The adjustment must be performed in the circumstance of

25°C±5°C of temperature and 65%±10% of relativehumidity if there is no specific designation.

4) The input voltage of the receiver must keep PAL: 100~240V±10%,50/60Hz (China/Indonesia/Thailand/Vietnam/CISmarket) in adjusting.

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

6) Signal: Receive the standard color signal. (65dB±1dBuV )PAL/SECAM: LG standard signal means the digital patternPAL-B/G 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 LG standard signal 65dB (±1dB) into 75Ω cable.2) Connect the digital multi-meter to J105. (AGC Check

Marking)

3-3. Adjustment1) Select the VP 0(RF AGC) adjustment mode by pressing

IN-START key on the SVC remote control.2) Press VOL +/- (F, G) key until the muti-meter shows

reading as 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 error.

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 TV set display horizontal line.3) Turn the Screen Vol. on the FBT clockwise to appear

Horizontal Line and turn it counterclockwise untilhorizontal 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 Preparation1) 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

6-pole 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 handle towards 6-12 o'clock direction

and adjust the horizontal line to fall onto the markopening the magnet at an angle.

4) Push the DY (deflection yoke) all the way to CPT funnel.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 of color.Review <Fig. 1>

6) Pull the DY slowly backward and fix it when the wholescreen becomes red. (The specified torque for fixing DYscrew should be 10Kg/cm). See <Fig. 2>

5-2. Convergency Adjustment

(1) Necessary Instrument1) Degaussing Coil2) Convergency fixing instrument (special tools)

(2) Adjustment Preparation1) Heat run over 30 minutes before adjustment.2) Demagnetize the CPT and Cabinet by using degaussing

coil.3) Receive Cross Hatch Pattern for Convergence (09CH).4) Let the contrast in normal luminance level.

(3) Static Convergence (STC) Adjustment1) Receive Cross Hatch Pattern for Convergence (09CH).2) Adjust the focus first seeing to it that the WHITE color

picture quality is sharp enough.3) Change the angle between the 2 tabs of 4-pole magnet

until vertical Red and Blue lines are unified.4) Turning the 2 tabs of 4-pole magnet until horizontal Red

and Blue lines are unified. At this time, do not changethe angle between the 2 tabs.

- 6 -

ADJUSTMENT

RG R B

G R B G R B

<Fig. 1>

<Fig. 2>



Maker

LG Innote

SANYO

LG Innote

Tuner Spec.

TAEW-G013D

115-B-A86EL

TAEA-G001D

Signal

65dBu

65dBu

65dBu

Remark

PAL

PAL

PAL

AGC Vol.

2.3±0.05V

2.3±0.05V

2.3±0.05V

Tuner P/N

6700MF0014A

6700PF0006B

6700MF0018B

- 7 -

5) Converge the R,G,B vertical line in unity by changing theangle between the 2 tabs of the 6-pole magnet.

6) Converge the R,G,B horizontal line in unity by turning the2 tabs of the 6-pole magnet. At this time, do not changethe angle between the 2 tabs.

(4) Dynamic Convergence (DYC) Adjustment1) Y-Axis Adjustment : Adjust by moving DY right and left2) X-Axis Adjustment : Adjust by moving DY up and down.

5-3. Block DiagramAdjustment fundermental is before CPT factory without ITCadjustment, need according to below order.

6. White Balance Adjustment

6-1. Necessary Instrument1) Automatic White Balance Meter (Low/High Light Pattern generator)2) CRT Color Analyzer, CA-100: 1set3) Factory Remote Control

6-2. Adjustment Preparation

Prior to this adjustment, the Screen Voltage adjustment should be finished.

6-3. Automatic Adjustment1) Adjust using Automatic White Balance Meter.2) Enter CPU OFF Mode by press "IN-START" & "MUTE"

key of factory remote control in turn before adjustment. After finishing adjustment, press the TV/AV key to exit.

*In case there is excess RED color at screen voltageadjustment, adjust it using "VOLUME -(F)" key of remotecontrol until the RED color disappear.

6-4. Manual Adjustment 1) Adjust using white Balance meter and Factory Remote

controller.2) Enter white balance adjustment mode by pressing

"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 Procedure

a. Make the picture luminance 45Ft-L by changing the“CONTRAST” and “BRIGHTNESS”.

b. Adjust X data of high light with R-DRIVE(VP7) and Ydata of high light with B-DRIVE(VP9) to have the colortemperature as shown below.

c. Make the picture luminance 4.5Ft-L by changing the“CONTRAST” and “BRIGHTNESS”.

d. Adjust X data of low light with R-BIAS(VP4) and Y dataof low l ight with B-BIAS(VP6) to have the colortemperature as shown below.

e. Repeat steps a~d until both low and high light havesame readings as shown below.

7. Focus V oltage AdjustmentThis adjustment must be done after operating the TV set receiver sufficiently.

7-1. Adjustment Preparation Received LG standard pattern (Digital Pattern, 480NC,13CH)and set the picture condition on " APC ON" (CLEAR) mode.

7-2. AdjustmentTurn the focus volume on the FBT upper direction to have the best focus vertical line and horizontal line as below:

DY and Magnet assembled

CPT Assembly Before CPT assembly, on CPTNECK and DY, adhibit TAPE onCPT contact part.TAPE need OVER-LAPPING ,parallel with NECK

STANDARDmore than 15 min Heat-Run

DY FIX Torque 9 ~ 11Kg f.cm

Magnet placeDY adjustment, can not engenderCPT neck shadow.Convergence Magnet

Heat Run

Degaussing

STC Adjustment

Purity Adjustment

DY Fix

SCREEN Voltage ADJ

W/B Fix

FOCUS ADJ.

STC ADJ.

DYC ADJ.

6pole 4 2

15 ~ 20mm

Market Color Temperature X-AXIS Y-AXIS Remark

PAL 12,000°K 268±3 273±3 Auto white balance meter standard

<Fig. 3>



- 8 -

8. Deflection setting data adjustmentThese adjustment will be done by Automatic AdjustmentEquipment.For manual adjustment, it is also possible by the followingprocedure.

8-1. Adjustment Preparation1) Set the Deflection data with the SVC Remote control.2) Select the Deflection adjustment mode by pressing IN-

START key.3) Press the CHD, CHE key to select adjustment item.4) Press the VOLF, VOLG key for data changing.

8-2. Adjustment1) Horizontal Position Adjustment

Select VP1(H-POS) and adjust so that the left and rightvertical line are symmetrical as possible.

2) Vertical Position AdjustmentSelect VP2(V-POS) and adjust so that the horizontal centerline coincide with geometric horizontal center of the CPT.

3) Vertical Size AdjustmentSelect VP3(V-SIZE) and adjust so that the middle circle ofthe Digital Pattern (480NC, 13CH) coincide with theeffective screen of CPT.

9. Auto Adjustment Preparation Sett-ing Data T able

10. EEPROM OPTION TABLEYou can find the EEPROM Option Data if entering IN-START key of the adjustable remote control and then pressing MENU key.

OPTION 1

DVD

TURBO ME

V-CURVE

V-MUTE

EYE

PS2 NOCLR

SND MUTE

GAME

OPTION2

TURBO

ARC

200PR

BLUEBACK

TURBO AT

SHARP

DVDN 6P

SLIM

OPTION3

FM TRANS

NTSC

AV PSEU

Q PACK

A2 SW

LNA

QURAN

XD MENU

OPTION 4

SYSTEM

SND MODE

AV

LOC KEY

COLOR T

PLL DIV

OPTION 5

FM PRE

NICAM PRE

SCART PRE

A2 FM TH

FIRST TH

ZWT

INITIAL

0

0

1

1

0

0

1

0

0

0

1

0

1

0

0

0

0

1

1

0

0

0

0

0

1

0

1

3

1

31

6

7

0

5

10

12

REMARK

DVD function (1:Yes, 0:No)

T-P,T-S function display on MENU

VOLUME CURVE (1:HIGH, 0:LOW)

VIDEO MUTE

EYE function (1:Yes, 0:No)

FIX 1

SOUND MUTE at no signal

GAME function (1:Yes, 0:No)

REMARK

TURBO P/S function (1:Yes, 0:No)

ARC function (1:Yes, 0:No)

200CH. MEMORY

BLUEBACK display (1:Yes, 0:No)

TURBO SEARCH function (1:Yes, 0:No)

SHARPNESS DATA (1:+10, 0:NORMAL)

DVD 6P (1:Yes, 0:No)

SLIM OPT (1:Superslim, 2: Normal Flat)

REMARK

FM TRANS function (1:Yes, 0:No)

NTSC function (1:Yes, 0:No)

AV ST MODE (1:PSEUDO, 0:MATRIX)

Q PACK Fuction (1:Yes, 0:No)

MONO DUAL function (1:5.74MHz, 0:NORMAL)

LNA TUNER (1:LNA, 0:NORMAL)

QURAN Function (1:Yes, 0:No)

XD MENU OPT (1:Yes, 0:No)

REMARK

0:ENG/1:ARAB/2:FARSI

0:MONO / 1:AV ST

0:NO AV / 1:AV1 / 2:AV1,2

0:4KEY / 1:6KEY / 2:8KEY/3:POWER

COLOR TABLE

PLL DATA (NTSC Tuning Level)

REMARK

FM PRESCALER

NICAM PRESCALER

SCART PRESCALER

A2 PRESCALER

MONO THRESHOLD

A2 THRESHOLD

Speed1SLave ADD

VIDEO ICBA

EEPROMA2

Delay30

EEPROM

Sub Add74 71 76 73

SpeedPlus

Step/Data3 3 3 3

Sub Add

Start Bit

Stop Bit

Masking

Direction

VCDTV PC

B(R)AMP

C

6

0

0

1

B(R)CUT

9

7

0

0

1

G(B)AMP

E

6

0

0

1

G(B)CUT

B

7

0

0

1

B AMP B CUT G AMP G CUT



Menu

VP 0

VP 1

VP 2

VP 3

VP 4

VP 5

VP 6

VP 7

VP 8

VP 9

VP 10

VP 11

VP 12

VP 13

VP 14

VP 15

VP 16

VP 17

VP 18

VP 19

VP 20

VP 21

VP 22

VP 23

VP 24

VP 25

VP 26

VP 27

VP 28

VP 29

VP 30

VP 31

VP 32

VP 33

VP 34

VP 35

VP 36

VP 37

VP 38

VP 39

VP 40

VP 41

VP 42

VP 43

VP 44

VP 45

VP 46

VP 47

VP 48

VP 49

VP 50

VP 51

VP52

VP53

OSD

RF AGC

H POS

V POS

V SIZE

R BIAS

G BIAS

B BIAS

R DRIVE

G DRIVE

B DRIVE

V LIN

V SCORR

V COMP

H BLK L

H BLK R

AFC GAIN

H FREQ

CD MODE

VBLK SW

FBP SW

YC FILTER

Y APF

C SYSTEM

C VCO

PAL APC

S TRAP SW

VIF SYS

VCO FREQ

SIF SYS

SUB BIAS

BRIGHT

ABL

BRI STOP

ABL TH

RGB TEMP

COR GAIN

PRE SHOOT

OVER SHOOT

Y GAMMA

DC REST

B-ST START

B-ST GAIN

C BYPASS

C KILL ON

C KILL OFF

C KILL OPER

RB BAL

RB ANG

B-Y LEVEL

R-Y LEVEL

V LEVEL

OVER MO SW

OVER MO LE

TINT TH

Adjustment

RF AGC Delay

H PHASE

V Shift (V POSI)

Vertical Size

Red Bias

Green Bias

Blue Bias

Red Drive

Green Drive

Blue Drive

V LIN (Vertical Linearity)

Vertical S-Correction

V.COMP

H BLK L

H BLK R

AFC Gain & gate

H Freq.

Count Down Mode

VBLK SW

FBP Blanking OR SW

Filter System

Y APF Select

Color System

C/VCO Adjustment

PAL APC SW

S.TRAP SW

VIF System SW

VCO Freq

SIF System SW

Sub Bias (sub-bright)

Brightness Control

Bright ABL Defeat

Bright Mid Stop Defeat

Bright ABL Threshold

RGB Temp SW

Coring Gain Select

Pre-shoot Adjustment

Over-shoot Adjustment

Y Gamma start point Select

DC Restoration Select

Black Stretch Start Point Select

Black Stretch Gain Select

C Bypass

C Kill On

C Kill Off

Color Killer Operational Point

R/B Gain Balance

R/B Angle

B-Y DC Level

R-Y DC Level

Video Level

OVER.MOD.SW

OVER.MOD.LEVEL

Tint Through

Range

0 ~ 63

0 ~ 31

0 ~ 15

0 ~ 127

0 ~ 255

0 ~ 255

0 ~ 255

0 ~ 127

0 ~ 15

0 ~ 127

0 ~ 31

0 ~ 31

0 ~ 3

0 ~ 3

0 ~ 3

0 / 1

0 ~ 63

0 ~ 7

0 / 1

0 / 1

0 ~ 15

0 / 1

0 ~ 7

0 ~ 7

0 / 1

0 / 1

0 ~ 3

0 ~63

0 ~ 3

0 ~ 127

0 ~ 127

0 / 1

0 / 1

0 ~ 7

0 / 1

0 ~ 3

0 ~ 3

0 ~ 3

0 ~ 3

0 ~ 3

0 ~ 3

0 ~ 3

0 / 1

0 / 1

0 / 1

0 ~ 7

0 ~ 15

0 ~ 15

0 ~ 15

0 ~ 15

0 ~ 7

0 / 1

0 ~ 15

0 / 1

Initial setting

40

12

3

110

127

125

127

64

6

64

14

10

7

0

3

0

15

0

0

1

2

0

0

4

0

1

1

112

1

45

64

1

0

4

0

3

0

3

0

1

1

2

1

0

0

7

10

8

28

27

6

0

8

0

Remark

Necessary

Necessary

Necessary

Necessary

Necessary

Unnecessary

Necessary

Necessary

Unnecessary

Necessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

- 9 -

11. IIC BUS Adjustment Data T able



- 10 -

Menu

VP 54

VP 55

VP 56

VP 57

VP 58

VP 59

VP 60

VP 61

VP 62

VP 63

VP 64

VP 65

VP 66

VP 67

VP 68

VP 69

VP 70

VP 71

VP 72

VP 73

VP 74

VP 75

VP 76

VP 77

VP 78

VP 79

VP 80

VP 81

VP 82

VP 83

VP 84

VP 85

VP 86

VP 87

VP 88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

OSD

Y TH

Y GAIN

R WIDTH

R OFFSET

B WIDTH

B OFFSET

T DISABLE

V TRANCE

A MUTE

V MUTE

SYNC KILL

V KILL

FSC SW

GRAY

CROSS BW

H-TONE

RGB BLK

C EXT

CRCB IN

AUDIO SW

VOL FIL

FM MUTE

IF AGC

A-OUT SW

DE-EMPH

FM GAIN

VOLUME

VDC

VSEPUP

VRES TM

HLLDET

ERGBL OUT

S TRAP

C TRAP

DIG OSD

VM AUD SW

VIN RGB SW

FLESH

WPL Ope

VM Gain

SYNC SS

GY AMP

HTNOC

OVER MT

APC OFF

VL OFFS

A2 SW

VCO AD

EQU AD

Bel AD

EQU ON

BA SW

SECKOFF

SECK ON

OSD CONT

OSD POS

Adjustment

Y TH

Y Gain

R width

R offset

B width

B offset

T Disable

V TRANCE

Audio Mute

Video Mute

Sync Kill

Vertical Kil

SVO or fsc Output

Gray Mode

Cross B/W

Half Tone

Blank Defeat

C Ext

CbCr IN

Audio SW

VOL. FIL

FM Mute

IF AGC Defeat

A.MONI.SW

De-emphasis TC

FM Gain

VOLUME

Vertical OUT DC Level

V-sync Separation Up

Vertical Reset Timing

Vertical sync system (H lock)

External RGB Contrast

S Trap Test

C. Trap Test

Digital OSD sw

VM output or Ext Audio input

Video input or Ext RB input

Auto-Flesh

WPL operating Point

VM Gain

Sensitivity of sync separation

G-Y Amplitude

Color on/off on Half tone Mode

Overmodulation circuit Type

APC Offset current

IF video level offset

5.74MHz FM Det

IF VCO freerun frequency

Equalizer

Bell filter

Equalizer circuit

Bell filter adjust

SECAM Killer circuit disable

SECAM Killer circuit enable

OSD Contrast

OSD Position

Range

0 ~ 3

0 ~ 3

0 ~ 3

0 ~ 3

0 ~ 3

0 ~ 3

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 ~ 3

0 ~ 3

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 / 1

0 ~ 127

0 ~ 63

0 / 1

0 / 1

0 / 1

0 ~ 15

0 ~ 7

0 ~ 7

0 / 1

0 / 1

0 / 1

0 / 1

0 ~ 3

0 ~ 7

0 ~ 7

0 ~ 15

0 / 1

0 / 1

0 ~ 7

0 ~ 3

0 / 1

0 ~ 15

0 ~ 15

0 ~ 15

0 / 1

0 / 1

0 / 1

0 / 1

0 ~ 7

1 ~ 60

Initial setting

1

0

0

0

0

0

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

126

63

0

0

1

8

4

4

0

0

1

0

0

0

3

4

0

0

4

3

0

8

8

3

0

1

0

0

5

38

Remark

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary

Unnecessary



- 11 -

1. TV FUNCTIONAL

2. TU / IF SECTION

3. VIDEO PROCESSING

TROUBLE SHOOTING



- 12 -

4. SMPS PRIMARY SECTION

5. SMPS SECONDARY SECTION



- 13 -

6. VERTICAL SECTION

7. HORIZONTAL SECTION



8. SOUND PROCESSING SECTION

- 14 -

9. CPT DRIVE SECTION



- 15 -

BLOCK DIAGRAM



- 16 -

MAIN

PRINTED CIRCUIT BOARD



- 17 -

MEMO



- 18 -

EXPLODED VIEW

174

112

913 170 150 153

520

105

120

330

320

310

300

400943

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

OPTION




P/N: 3854VA0196C (07.11.06) LGE Internal Use Only

smk zyrex

Rectangle

smk zyrex

Typewriter

Khusus pengukuran di IC tidak boleh langsung di KAKI IC, Ukurlah pada

smk zyrex

Typewriter

titik lain yang berhubungan

Edited by Foxit Reader Copyright(C) by Foxit Corporation,2005-2009 For Evaluation Only.

SVC. SHEET : 3854VA0196C-S

Documents

manual TV LG 14"14fu7rb-t2