manual tv lg 14"14fu7rb-t2
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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
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 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
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
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
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
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>
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
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>
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 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
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
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
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 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
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 11 -
1. TV FUNCTIONAL
2. TU / IF SECTION
3. VIDEO PROCESSING
TROUBLE SHOOTING
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 12 -
4. SMPS PRIMARY SECTION
5. SMPS SECONDARY SECTION
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 13 -
6. VERTICAL SECTION
7. HORIZONTAL SECTION
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
8. SOUND PROCESSING SECTION
- 14 -
9. CPT DRIVE SECTION
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 15 -
BLOCK DIAGRAM
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 16 -
MAIN
PRINTED CIRCUIT BOARD
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 17 -
MEMO
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
- 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
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
LGE Internal Use Only
Copyright©2008 LG Electronics.Inc. All right reserved.Only for training and service purposes.
P/N: 3854VA0196C (07.11.06) LGE Internal Use Only
SVC. SHEET : 3854VA0196C-S
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