LG 21FU6RLX User manual

COLOR TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/ Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Sep., 2008
Printed in ChinaP/NO.: MFL51851001
CHASSIS : CW62E
MODEL: 21FU6RLX
MODEL: 21FU6RLX-T8
Internal Use Only

- 2 -
CONTENTS
Contents ....................................................................................................2
Safety Precautions....................................................................................3
Control Descriptions ................................................................................4
Specifications............................................................................................7
Adjustment Instructions...........................................................................8
SVC Remocon.........................................................................................13
Trouble Shooting ....................................................................................14
Printed circuit board...............................................................................17
Block Diagram.........................................................................................19
Exploded View.........................................................................................20
SVC. Sheet...................................................................................................
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 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 1MΩand 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
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

- 4 -
SPECIFICATIONS
Note : Specification and others are subject to change without notice for improvement.
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Application Range.
This spec sheet is applied to the CW62E chassis.
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Specification
Each part is tested as below without special appointment.
1) Temperature : 25°C
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5°C
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2) Relative Humidity : 65
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10%
3)Power Voltage : Standard input voltage
100 ~ 240V~ 50/60Hz
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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 BOM .
5) The receiver must be operated for about 20 minutes prior
to the adjustment.
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Test method
No
1
2
3
4
5
6
7
8
9
10
Item
Receiving System
Available Channel
Input Voltage
Market
Screen Size
Aspect Ratio
Display Method
Tuning System
Operating Environment
Storage Environment
Remark
Korea
L.America/ Philippine
Taiwan
China / Indonesia/ Thai/ Vietnam
EU
CIS, Non EU
PAL Model
N-EU, Latin America
EU
NTSC Model
PAL Model
Specification
NTSC M (AV 3.58)
PAL N/M, NTSC M(AV 3.58)
PAL BG,DK,I/NTSC M(AV 3.58/4.43)
PAL/SECAM BG/DK,PAL I
SECAM DK,NTSC M/4.43,PAL BG DK
VHF : E2 ~ E12
UHF : E21 ~ E69
CATV : S1 ~ S20
HYPER : S21 ~ S41
AC 100~240V 50/60Hz
AC 230Vac 50Hz
Latin America, China, Indonesia
Philipines,Taiwan, Thai,Vietnam,CIS
21inch (US)
4:3
CRT
FS
FVS 100Promgram
1) Temp : 0 ~ 40 deg
2) Humidity : 85 % Under
1) Temp : -20 ~ 60 deg
2) Humidity : 85 % Under
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General Specification
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only
Market
N-EU
EU/CIS
Compliance
CCC Safety : K60065
Safety : CB [K60065]
EMC : CE [EN55020,EN55013]
Appliance
110 ~ 240Vac, 50/60Hz
230Vac, 50Hz

1. Application Object
These adjustment instructions are applied to CW62E chassis.
2. Notes
(1) Because this is a cold chassis, it is not necessary to use
an isolation transformer.But, operate 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 the better productivity, it can be changed in
pre-permitted range.
(3) Environment conditions: If not specified, it must be done in
following conditions.
1) Temperature : 25°C ± 5°C
2)Humidity : 65% ± 10%
(4) Power supply of a SET which is adjusted is
(100~240V) ±10% AC, 50~60Hz
(5) If not specified, the receiver must be operated for more
than 20 minutes prior to the adjustment.
(6)Signal : Receive the standard color signal. (65dB ±1dB uV)
LG standard signal means the digital pattern
(PAL_EU 05CH)
3. Adjustment
3.1 Focus adjustment
3.1.1. Preperation
a. Receive the Cross-Hatch Pattern(Fig. 1) and Set the picture
condition on DYNAMIC Mode or APC CLEAR mode
3.1.2. Adjustment 1
Adjust the FOCUS VOLUME of FBT for the Best focus of
vertical line
3.2 Focus adjustment
Following direction is a case using of None-ITC CPT for CPT
manufacture factory.
This adjustment shoule be done as below direction.
3.2.1. Purity Adjustment
a. Do degauss CPT and Cabinet
b. Receive the RED Raster Pattern for purity adjustment.(11CH).
c. Unfasten fixing Screw of DY, close DY to CPT Funnel DY as
possible as you can.
d. Make R-Land be centered as cross Purity Magnet
That time,4th 6th magnet should keep free gauss status
e. Make uniform RED Raster as moving DY,
Check there is purity problem or not on R/G/B, white Raster.
Then, Fix screw of DY.
(At this time, be careful about inclination and DY should be
fixed keeping horizontality)
f. Check the TV in direction of EAST, WEST, SOUTH, NORTH,.
Adjust with supporting MAGNET when adjustment is not
operated .
3.2.2. Convergence Adjustment
This adjustment should be operated at the best condition of
FOCUS after finishing the PURITY adjustment.
a. BACK RASTER receives black CROSS HATCH signal.
b. Adjust Brightness so that there are 9-12 dots.
c. Widen two tabs of 4pole Magnet with equal angles and accord
red, blue vertical lines at the center of screen.
d. With keeping angle of "c. clause", rotate tab and accord
red/blue, green vertical lines at the center of screen
e. Widen two tabs of 6pole Magnet with equal angles and accord
red, blue vertical lines at the center of screen
f. With keeping angle of "e. clause", repeat the adjustment from c
to e keeping in mind the movement of red,blue, green when the
horizontal lines are twisted
- 5 -
ADJUSTMENT INSTRUCTIONS
AB
<Fig. 1> Cross-Hatch Pattern (NTSC : US 09CH, PAL : E-7CH)
Assembling DY and
Magnet
CPT Assembly
As preparatory operations before
assembling CPT, wind cotton Tape for
protecting to CPT NECK and DY, CPT
connection parts. At this moment, end
of tape should be over-lapped and
wound in direct route to the NECK.
It needs minimum 15 minutes for
Heat run under Standard picture
condition.
Torque is 9~11 Kg f.cm when DY is
Fixed.
Fix the Magnet to the position as
shown picture below. Be careful not to
make CPT neck shadow while
adjusting DY.
HEAT RUN
Degaussing
Pre STC Adjust
Adjust Purity
Fix DY.
SCREEN Adjustment
Fix W/B
Adjust Focus
Adjust STC
Adjust DYC
Convergence Magnet
15 ~ 20mm
6Pole 42
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

g. Move DY up, down, left, right and make the convergence to be
optimal condition and stick rubber wedge to CPT so that the
DY not to move.
3.3 ScreenVoltage&WHITE BALANCEAdjustment
3.3.1 Screen Voltage Adjustment.
a. Receive the NTSC or PAL-M/N signal into RF mode
( regardless of channel.)
b. If you press IN-START -> ADJUST , the LINE SVC mode
changes to screen adjustment mode.
c. Turn the Screen volume of FBT until the horizontal line is no
longer seen and then stop.
d. Press the EXIT button to exit Screen Adjust mode.
3.3.2 White Balance Adjustment
Prior to this adjustment, screen voltage adjustment must be finished.
1). Necessary Instrument
(a). White Pattern Generator (Can generate Low/High Light pattern)
(b). White Balance meter( CRT color Analyzer,CA-100)
(c). Factory Remote controller
2) Preliminary steps
(a). Tune the TV set to receive an 100% white pattern.
(b). Perform screen adjustment first.
3) Adjustment
(a). Enter into adjustment mode by "INSTART" key and
select SERVICE1 mode.
(b). Adjust the item with CH+/- Key.
(c). Adjust the data with VOL+/- Key.
(d). Adjustment Procedure
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Adjust"CONTRAST"and "BRIGHT" so that the bright level
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Select GG(G DRIVE) to adjust Y coordinate in High Light
and select RG(R DRIVE) to adjust X coordinate so that
the color coordinates in High Light match the vaInues in
Table below.
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Adjust 'CONTRAST
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and "BRIGHT"so that the bright level
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Select BLO-G(G CUT) to adjust Y coordinate in Low Light
and select BLO-R(R CUT) to adjust X coordinate so that
the color coordinate in Low light match the values in
Table below.
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Repeat
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until the color coordinates in High and Low
color satisfies the Table.
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Check the adjusted color coordinates with the white
balance meter
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. Store the W/B adjustment data in EEPROM by using
ENTER button before EXIT.
[Table 3] W/B Automatic Instrument Table
CW62E WHITE BALANCE IIC PARAMETER
1. IC
2.White balance IIC Parameter (Address)
3.Color coordinate
3.4. Deflection Adjustment
Adjustment should be follow below sequence..
3.4.1. Preparation.
a. Tune the TV set to receive a Digital pattern (PAL : EU 05CH)
b. Use the adjust Remoconto set the Deflection Data.
c. At adjustment mode (IN-START button on remote control of
adjustment), changed to SERVICE 2 mode to adjust the
deflection.
d. Press Channel
D,E button for desirous function adjustment..
e. Press Volume
F,G button to adjust the data.
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If Line is not for LG TV SET, receive the avalible Pattern to adjust
Deflection.(Ex : Crosshatch + Circle)
3.4.2. Adjustment .
1. Deflection Data Adjustment should be follow below sequence.
a. Adjust at N50HZ(PAL) => N60Hz(NTSC) => Z60Hz => N50HZ
=> W50Hz => Z50Hz
b. This sequence is only for specific model which as a ARC
function.
Note : If adjust at N60Hz, every data will be changed to revised
data automatically compared with N60Hz
2. In case of NTSC only model, adjust deflection at 60Hz of NTSC
signal.
Program
Sub Add
Start Bit
Stop Bit
Offset
Polarity
EP_Rom_S
B(R)_Amp
Win31_wb TWB
20
5
0
0
1
36
B(R)_Cut
Win31_wb TWB
17
5
0
0
1
33
G_Amp
Win31_wb TWB
21
5
0
0
0
37
- 6 -
Item EU N-EU
X
Y
Chroma
288
295
9000°C
268
273
13000°C
<Table 1> White Balance Coordinates
(Warning: Color coordinates is different for each Market.)
Tolerance Range : Adjust within ±3 for each X,Y coordinates
BLO-R(R CUT)
BLO-G(G CUT)
RG(R DRIVE)
GG(G DRIVE)
BG (B DRIVE)
LOW LIGHT
HIGH LIGHT
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
0 ~ 63
32
32
32
32
32
Range Refer
DATA
<Table 2> White Balance Initial Data
Program
Vcd Slave
Win31_wb TWB
8A
Eeprom_Slave
Win31_wb TWB
A0
Speed
1
Delay
30
G_Cut
Win31_wb TWB
18
5
0
0
0
34
Speed/ Plus 2 2 2 2
PAL
Item
Fixed
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only
VCD IC
EP_ROM 0 0 0 0
Name Maker Algorithm

3. In case of Latin America model, Adjust deflection at N60Hz(NTSC)
Then, adjust deflection at 50hZ of PAL signal.
4. Store the deflection adjustment data in EEPROM by using
'ENTER' button.
After finishing deflection adjustment, press the 'EXIT' button to
exit from SVC mode.
?
?
?
?
?
?
?
?W26X?hg?
?'@6X??*@@,??W2@(?h?
?V'@)X?V40Y?W&@(Y?h?
V'@)X?e?W&@(Yhe?
?V'@)XeW&@(Y?he?
V'@)KO&@(Yhf?
W26X?V'@@@@(Y?W26Xh?
*@@,eN@@@@He*@@,h?
V40YeJ@@@@LeV40Yh?
?W&@@@@)X?hf?
W&@(MI'@)Xhf?
?W&@(YeV'@)X?he?
W&@(Y?e?V'@)Xhe?
?W&@(Y?W26X?V'@)X?h?
?&@0Y??*@@,??V4@)?h?
?V40Y?hg?
?
?
?
?
?
?
?
?
Deflection Adjustment detail contents
?W-Xhf
W&@)X?he
?W&@@@)Xhe
W&@@@@@)X?h
?W&@@@@@@@)Xh
W&@@@@@@@@@)X?g
?W&@@@@@@@@@@@)Xg
W&@@@@@@@@@@@@@)X?f
*@@@@@@@@@@@@@@@,?f
V'@@@@@@@@@@@@@(Y?f
?V'@@@@@@@@@@@(Yg
V'@@@@@@@@@(Y?g
?V'@@@@@@@(Yh
V'@@@@@(Y?h
?V'@@@(Yhe
V'@(Y?he
?V+Yhf
PAL : Adjust upper and lower part of circle from the effective
screen of the CPT.to be distance of 6~7mm
1. V SLOPE
Half of the picture(bottom part) changed to blank.
Adjust so that half blanked- Picture bottom line in accord with
geometric vertical center of the CPT
2. V SHIFT(VS)
Adjust so that the horizontal center line of a digital circle pattern
is in accord with geometric horizontal center of the CPT.
3. V LINEAR(VL)
Adjust the top & bottom size of inner circle to be equal on EU05
CH and US13CH
4. V AMPLIT ( V AMPITUDE)
?W-Xhf
W&@)X?he
?W&@@@)Xhe
W&@@@@@)X?h
?W&@@@@@@@)Xh
W&@@@@@@@@@)X?g
?W&@@@@@@@@@@@)Xg
W&@@@@@@@@@@@@@)X?f
*@@@@@@@@@@@@@@@,?f
V'@@@@@@@@@@@@@(Y?f
?V'@@@@@@@@@@@(Yg
V'@@@@@@@@@(Y?g
?V'@@@@@@@(Yh
V'@@@@@(Y?h
?V'@@@(Yhe
V'@(Y?he
?V+Yhf
NTSC : Adjust so that the circle of a digital circle pattern may
be located within the effective screen of the CPT.
5. H SHIFT(HS)
Adjust so that the Horizontal center line of a digital circle pattern
is in accord with geometric vertical center of the CPT.
6. EW WIDTH(EW)
Adjust outer line of the left/right outer lattice to be united with
effective boundary surface of CPT (Outer lattice: NTSC : 3.0 _
3.5 unit , PAL : 0~25% Range)
7. EW PARAB (EW PARABOLA)
Adjust so that middle portion of the outermost left and right
vertical line looks like parallel with vertical lines of the CPT.
8. EW TRAPE ( EW TRAPEZOID)
Make adjustment so that the top horizontal wideh and the
bottom horizontal width are equal.
(If screen is trapezoid, adjust to be square)
9. EW UPCOR & EW LOCORR
After completing the Cusion adjustment, make adjustments so
that the bottom left and right corner vertical Lines are straight.
10. H BOW
Adjust the left and right crooked line on upper and lower side.
11. H PARALL(ANGLE)
Adjust the vertical slope.
12. SCORRECT (S CORRECTION)
Adjust the lattice width of the Top/Center/Bottom to be the same.
?W-Xhf
W&@)X?he
?W&@@@)Xhe
W&@@@@@)X?h
?W&@@@@@@@)Xh
W&@@@@@@@@@)X?g
?W&@@@@@@@@@@@)Xg
W&@@@@@@@@@@@@@)X?f
*@@@@@@@@@@@@@@@,?f
V'@@@@@@@@@@@@@(Y?f
?V'@@@@@@@@@@@(Yg
V'@@@@@@@@@(Y?g
?V'@@@@@@@(Yh
V'@@@@@(Y?h
?V'@@@(Yhe
V'@(Y?he
?V+Yhf
As being decided by DY value of the using CPT, set as default
(Initial Data) of using CPT.
13. V SCROLL
* Recommend initial setting data
14. V ZOOM
* Pre setted according to the CPT
15. WBR
16. WBF
3.5 Deflection setting initial Data : SVC DATA for 21" US
O2@@6Khe
W2@@@@@@6Xh
7@@@@@@@@1h
?J@@@@@@@@@@L?g
?7@@@@@@@@@@1?g
?@@@@@@@@@@@@?g
?@@@@@@@@@@@@?g
?3@@@@@@@@@@5?g
?N@@@@@@@@@@H?g
3@@@@@@@@5h
V4@@@@@@0Yh
I4@@0Mhe
Adjust : It is possible to adjust data.
O2@@6Khe
W2@@@@@@6Xh
7@@@@@@@@1h
?J@@@@@@@@@@L?g
?7@@@@@@@@@@1?g
?@@@@@@@@@@@@?g
?@@@@@@@@@@@@?g
?3@@@@@@@@@@5?g
?N@@@@@@@@@@H?g
3@@@@@@@@5h
V4@@@@@@0Yh
I4@@0Mhe
Recommend : It is recommended, if necessary it is possible to adjust.
O2@@6Khe
W2@@@@@@6Xh
7@@@@@@@@1h
?J@@@@@@@@@@L?g
?7@@@@@@@@@@1?g
?@@@@@@@@@@@@?g
?@@@@@@@@@@@@?g
?3@@@@@@@@@@5?g
?N@@@@@@@@@@H?g
3@@@@@@@@5h
V4@@@@@@0Yh
I4@@0Mhe
FIX : Don't change data.
P A L
[Table 4] Deflection setting Initial Data (SERVICE 2)
# After finish the Deflection adjustat PAL 50Hz, NTSC 60Hz's
Deflection data has compensated Data automatically.
But, Confirm the Adjustment condition at NTST System. If
adjustment is necessary, it is possible to adjust
- 7 -
<Fig. 4> Cross-Hatch Pattern(PAL:E-7CH)
UPCOR
LOCOR
EW PARAB
Adjust Point
50Hz 60Hz
Item
V SLOPE
V SHIFT
V LINEAR
V AMPLIT
H-SHIFT
EW WIDTH
EW PARAB
EW TRAPE
EW UPCOR
EW LOCOR
H BOW
H PARALL
SCORRECT
V SCROLL
V ZOOM
WBR
WBF
V SYNSLI
OVRVOLIN
V GUARD
Vertical slope
Vertical shift
Vertical linearity
Vertical amplitude
Horizontal shift
EW width
Parabola adj
Trapezoid adj
Upper corner adj
Lower corner adj
Bow
Horizontal parallelogram
S correction
Vertical scroll
Vertical zoom
Timing of wide Blanking
Timing of Wide Blanking
Vertical slicing level
Over voltage input mode
Vertical guard mode
Description 21"US Remarks
11
42
35
17
35
32
44
34
54
54
35
30
40
21
25
2
2
0
0
1
15
50
45
17
40
30
45
15
50
55
35
30
40
21
25
2
2
0
0
1
Adjust
Adjust
Adjust
Adjust
Adjust
Adjust
Adjust
Adjust
Adjust
Adjust
Adjust
Adjust
Fixed
Recommend
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Real Screen size
Real screen size
[Fig 3] PAL Digital Pattern(EU05CH) [Fig 4] NTSC Digital Pattern(US13CH)
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

3.6 SVC DEFAULT DATA (Below DATA is
managed by EEPROM MASTER)
[Table 5] SERICE 1
[Table 6] SERVICE 3
[Table 7] SERVICE 4
[Table 8] option 1,2,3,4,5
- 8 -
OPTION1
OPTION2
OPTION3
OPTION4
OPTION5
ITEM
INCH
SYSTEM
200PR
TOP
ACMS
CH-AU
SCREEN
CHASSIS
PIP
VOL CURVE
A2 STEREO
I/II SAVE
AV3
SCART
DVD
XWAVE
EYE
4KEY
TILT
DBB
OSD LANG
TXT LANG
USB
REMOCON
HOTEL
TURBOSCH
TURBOP/S
LGEINVOL
COUNTRY
QUARRAN
TEXT
TS-AK
Description
0:29S-Slim,1:28Wide,2:29N-Flat,3:25”Flat(21”US)
BG/DK/I/M, BG/DK/I/L
W/O TXT=>200PR,W/TXT=>100PR
TOP - Germany, Swiss, Austria, Italy
Auto channel memory system
China & Australia Frequency table
0: normal , 1: -50V
0 : CW62A, 1 : CW62C 2 : CW62D 3 : CW62E
PIP option
High / Low volume curve
Nicam check & FM stereo / Dual Operator
Dual soung setting save or not
0: Fix
SCART option
DVD option
FM TX option
EYE option
0: 6 KEY 1: 4KEY only
TILT option
0 :W/O DBB except 29FU3, 1: W/ DBB Only 29FU3
Refer to the next page Fig[.8 ]
Refer to the next page Fig[.8 ]
0 : W/O USB Model , 1: W/ USB Model
Not available
HOTEL option
Turbo search
Turbo picture/ sound
0 : Others 1 : Indonesia only (South East Asia)
0 : Others 1 : EAST EU only (East EU)
0 : Others,1: Quarran Model.Only (ARAB FARSI only)
W/ TEXT : 1 , W/O TEXT : 0
Other : 0, 29” TS AK : 1
ITEM
WS
BKS
BSD
DSK
COR
PF
RPO
RPA
PWLDAC
IFOFF
CHSE
ACL
CLPDEL50
CLPDEL60
CLPLEN
CLMPID
DEGAUSS
N-EU
0
1
0
1
2
0
3
2
8
37
0
1
20
2
3
3
0
RemarkDescription
WHITE STRETCH
BLACK STRETCH
BLACK STRATCH DEPTH
DYNAMIC SKIN CONTROL
VIDEO DEPENDENT CORING
PEAKING FREQUENCY DELAY
RATION POSITIVE/
NEGATIVE PEAKS
RATION PRE/AFTER SHOOT
PEAK WHITE LIMITER DAC
IF DEMODULATIOR
CHROMA SENSITIVITY
AUTO COLOR LIMITING
Clamping delay 50
Clamping delay 60
Clamping Pulse Length
Clamping Duration
DEGAUSS
25
32
32
32
32
32
5
13
25
AGC
RG
GG
BG
BLO-R
BLO-G
CDL
L-DLY
RGB-BRI
ITEM NEU
DESCRIPTION
ACG take over
Red Gain
Green Gain
Blue Gain
Black level offset Red
Black level offset Green
Cathode Drive Level
Luminance delay time
OSD/TEXT BRIGHTNESS
Remark
OVMADAPT
OVMTHR
ADC LEV
DEC LEV
MONO LEV
NICAMLEV
FILTBW
BAMA FC
AUX3 VOL
FMWINDOW
BOOSTVAL
MAX VOL
DCXO VAL
DCXOA
TEXT-V
TEXT-H
DBB GAIN
ITEM DESCRIPTION
OVER MODULATION ADAPT
OVER MODULATION THRESHOLD
ADC LEVEL(-16~15)-ADCLEV
DEC LEVEL(-16~15)-DECLEV
MONO LEVEL(-16~-15)MONLEV
NICAM LEVEL(-16~15)-NICEV
FILTER BANDWIDTH
BASS MANAGEMENT
FREQUENCY CHAR
AUX3 VOL(SCART1 RF SOUNDOUT)
FM WINDOW FILTER(FMWS)
MAX VOLUME
DCXO
DCXO
TEXT V POSITION
TEXT H POSITION
Dynamic bass booster gain
1
1
17
17
17
22
0
8
84
1
0
100
50
0
40
5
8
FM pre-scaler (stereoL/R)
FM pre-scaler (Mono)
NICAM pre-scaler
Scart pre-scaler
NEU Remark
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only
?
?
?
?
?
?
?
?
?
?
?
?
?
?W&?he?
W&@Lhe?
?W&@@)X?h?
W&@@@@)Xh?
?W&@@@@@@)X?g?
W&@@@@@@@@)Xg?
?O&@@@@@@@@@@)K?f?
'@@@@@@@@@@@@@@(f?
V'@@@@@@@@@@@@(Yf?
?V'@@@@@@@@@@(Y?f?
V'@@@@@@@@(Yg?
?V'@@@@@@(Y?g?
V'@@@@(Yh?
?V'@@(Y?h?
V'@Hhe?
?V'?he?
?
?
?
?
Example of OPTION DATA on the BOM
LEVEL PART NO. SPECIFICATION DESCRIPTION
1. EBT50665601 MAIN CHASSIS ASSY [112.68.164.32.8]

- 9 -
<Table 9> OSD & TEXT LANGUAGES
Southeast Asia TEXT
EAST EU CYRILLIC TEXT
WEST EU GREEK TEXT
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
0
1
2
3
4
5
6
7
0
1
0
1
2
3
4
5
6
0
1
2
3
4
5
6
7
8
9
10
11
0
1
ENGLISH
SOUTHEAST ASIA
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
ENGLISH
EAST EU ALL
ENGLISH RUSSIAN
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
ENGLISH
EU 7EA
WEST EU ALL
ENIGLISH GREEK
RESERVED
RESERVED
RESERVED
RESERVED
ENGLISH
INDONESIAN
MALAY
VIETNAMESE
THAI
ENGLISH
GERMAN
RUMANIAN
POLISH
HUNGARIAN
CZECH
RUSSIAN
BULGARIAN
ENGLISH
RUSSIAN
ENGLISH
GERMAN
FRENCH
ITALIAN
SPANISH
NETHERLANDISH
PORTUGUESE
ENGLISH
GERMAN
FRENCH
ITALIAN
SPANISH
NETHERLANDISH
SWEDISH
NORWEGIAN
DANISH
FINNISH
PORTUGUESE
GREEK
ENGLISH
GREEK
0
1
2

- 10 -
- 10 -
ARAB TEXT
FARSI TEXT
Southeast Asia W/O TEXT
WEST EU W/O TEXT
EAST EU W/O TEXT
ARAB W/O TEXT
CHINA, INDIA W/O TEXT
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
ENGLISH
ARABIC
FARSI
ARAB ALL
RESERVED
RESERVED
RESERVED
RESERVED
Same as ARAB TEXT
Same as Southeast Asia TEXT
Same as WESTEU GREEK TEXT
Same as EASTEU CYRILLIC TEXT
Same as ARAB TEXT
ENGLISH
CHINA
HINDI
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
ENGLISH
FRENCH
ARAB
URDU
ENGLISH
FRENCH
ARAB
FARSI
ENGLISH
FRENCH
ARAB
URDU
FARSI
ENGLISH
CHINESE
ENGLISH
HINDI
0
1
2
3
0
1
2
3
0
1
2
3
4
0
1
0
1
3
4
5
6
7
8
9
3.7. FM-Transmitter(X-Wave)
How to inspect condition of a Transmission and reception in
Wireless sound mode
- X-Wave* (option)
-Wireless sound model's efficiency inspections is executed to a
finished in a final inspection phase
-FM Transmitter is a function which receives voice signal by an
exclusive remote control and Earphone,Transmites a FM
through transmitter of inner part in MICOM Board to TV
sound(Monitor Output)
- If the received frequency which set up in OSD is being tunned
without using an exclusive remote control,
It is available to receive in a general FM receiver.
.
?
?
?
?
?
?
?
?
?
?O2@@@6Kh?
?W20M?eI46Xg?
W.M?gI/X?f?
?W.Yf@?e?V/Xf?
W.Y?e?J@?fV/X?e?
7HfW&@?f?N1?e?
?J5?f.Y@?g3Le?
?7H?g@?gN1e?
?@h@?g?@e?
?@h@?g?@e?
?@h@?g?@e?
?3L?g@?gJ5e?
?N1?g@?g7He?
3Lg@?f?J5?e?
V/X?f@?fW.Y?e?
?V/Xe@@@@@??W.Yf?
V/K?gO.Y?f?
?V46K?eO20Yg?
?I4@@@0Mh?
?
?
?
?
?
Execute in channel generating voice-signal (Kumi : 5CH,
25Ch):
?
?
?
?
?
?
?
?
?
O2@@@6K?h?
W20Me?I46X?g?
?W.Mg?I/Xg?
W.Y??W2@6XeV/X?f?
?W.YeW.MI')X??V/Xf?
?7H?e7HeN@1?eN1f?
J5f@?e?@@?e?3L?e?
7Hh?@5?e?N1?e?
@?hJ@H?f@?e?
@?h75g@?e?
@?g?J(Yg@?e?
3LgW.Y?f?J5?e?
N1f?W.Yg?7H?e?
?3L?eW&Y??O@?eJ5f?
?V/Xe7@@@@@@??W.Yf?
V/X?@@@@@@@?W.Y?f?
?V/Kg?O.Yg?
V46Ke?O20Y?g?
I4@@@0M?h?
?
?
?
?
?
Select a transmitted frequency in MENU OSD
MENU => SOUND => X-WAVE=> Set Frequency (87.7MHz)
?
?
?
?
?
?
?
?
?
?O2@@@6Kh?
?W20M?eI46Xg?
W.M?gI/X?f?
?W.Ye?W26X??V/Xf?
W.Y?eW&@@)XeV/X?e?
7Hf7<e@1e?N1?e?
?J5?f@?e3@f3Le?
?7H?hS5fN1e?
?@h?O&Uf?@e?
?@h@@@1f?@e?
?@he@@f?@e?
?3L?h3@fJ5e?
?N1?hN@f7He?
3Le?@6XeJ5e?J5?e?
V/X??@@)KO.YeW.Y?e?
?V/XeI4@0Y??W.Yf?
V/K?gO.Y?f?
?V46K?eO20Yg?
?I4@@@0Mh?
?
?
?
?
?
A received frequency in an exclusive remote control or
received FM Radio is tuned by 87.7MHz which is Same as
frequency in OSD
?
?
?
?
?
?
?
?
?
?O2@@@6Kh?
?W20M?eI46Xg?
W.M?gI/X?f?
?W.Yf@?e?V/Xf?
W.Y?f@?fV/X?e?
7Hf?J@?f?N1?e?
?J5?fW&@?g3Le?
?7H?f7@@?gN1e?
?@f?J@?@?g?@e?
?@fW&@?@?g?@e?
?@f7@@@@@@?f?@e?
?3L?e@@@@@@@?fJ5e?
?N1?g@?g7He?
3Lg@?f?J5?e?
V/X?f@?fW.Y?e?
?V/Xf@?e?W.Yf?
V/K?gO.Y?f?
?V46K?eO20Yg?
?I4@@@0Mh?
?
?
?
?
?
Check out whether a signal generating to Main Speaker
generates in earphone ore receiver or not
?
?
?
?
?
?
?
?
?
?O2@@@6Kh?
?W20M?eI46Xg?
W.M?gI/X?f?
?W.Ye?@@@@(?V/Xf?
W.Y?e?@@@0YeV/X?e?
7HfJ(M?f?N1?e?
?J5?f7Yh3Le?
?7H?e?J@@6XgN1e?
?@f?@@@@)K?f?@e?
?@g?I4@@@f?@e?
?@h?I'@f?@e?
?3L?hN@fJ5e?
?N1?hJ5f7He?
3Le?@6X?W.Ye?J5?e?
V/X??3@)T.Y?eW.Y?e?
?V/X?V4@0Ye?W.Yf?
V/K?gO.Y?f?
?V46K?eO20Yg?
?I4@@@0Mh?
?
?
?
?
?
There is no alternation and setting of adjusted DATA in the
process of inspecting FM TX(X-Wave)
4. Shipping condition.
4.1. Shipping Mode
Do push IN-STOP KEY using by R/C and it, will be done
shipping mode.
4.2. Shipping condition
[Table 6]
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

6.SOUND PRE-SCALER (PAL ONLY)
This SVC setting value is set since Model design for standard, so
adjustment should not be done at manufacture process. This
adjustment specification shows for only reference.
?
?
?
?
?
?
?
?
?
?
?
?W-Xhg?
?'@6X??*@,eW2@(h?
?V'@)X?V+Y?W&@(Yh?
V'@)X?eW&@(Y?h?
?V'@)X?W&@(Yhe?
V'@)?&@(Y?he?
W26X?V'@@@(Y?W26X?g?
&@@)e?@@@e?&@@)?g?
?W&@@@)Xhf?
W&@(?'@)X?he?
?W&@(Y?V'@)Xhe?
W&@(Y?eV'@)X?h?
?W&@(Y?W-X?V'@)Xh?
?&@0Y??*@,eV4@)h?
?V+Yhg?
?
?
?
?
?
?
?
Audio Out Level SPEC
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
PAL B/G, D/K, I : 500mVrms at 54 % modulation ratio.
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
SECAM B/G, D/K, L/L' : 500mVrms at 54 % modulation ratio.
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
?@@@@@@@@@@@@@@@g
NTSC-M : 500mVrms at 100 % modulation ratio
- 11 -
<Table 6 > Shipping condition
4.2.1 PSM MODE (PAL)
[Table 7] Picture mode settind data
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only
Power
Input
MEMORY
CHANNEL
SOUND
MUTE
PSM
XD
SSM
TORBO SOUND
AVL
BALANCE
ON/OFF TIME
AUTO SLEEP
CHILD LOCK
DEGAUSS
EYE
TILT
BLUE BACK
BOOSTER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
ITEM
No. Shipping condition
OFF
TV
Refer to CH. MEMORY
Management
30 STEPS
OFF
DYNAMIC
ON
FLAT
OFF
OFF
0
OFF
OFF
OFF
OFF
OFF
0
OFF
OFF
Remarks
OPTION
OPTION
OPTION
OPTION
PSM
CONTRAST
BRIGHT
COLOR
SHARPNESS
Dynamic
100
60
60
60
Standard
90
55
55
60
Mild
60
55
55
50
Game
50
55
60
50
5. OPTION setting ( PAL )
1).This option adjustment decides function in accordance with
model. Press the SVC TX adjustment button (CH D,Ebotton)
at SVC mode, then adjust the option at OPTION 1,2,3,4,5
mode..
2).OPTION1 scope(0~255), OPTION2 scope (0~255), OPTION3
scope (0~250), OPTION4 scope (0~337) OPTION5 scope
(0~252) Each OPTION data can be input using remote
controller's number key.
(Each option data store automatically.)
3)Mark the option adjustment data like [111,1111,111,111] in
BOM.
SVC REMOCON

TROUBLE SHOOTING
- 12 -
1. RF-STEREO MODEL
1) PICTURE OK / NO SOUND
Check/ Replace TU101 or Input signal
NO
OK
Selected correct system in menu
Check the waveform IF 1 of TU101
Check the voltage at pin 3, 9, 16, 43,
86, 88, 90 of UOCIII
NO Check/ Replace IC11
NO
Check the voltage at pin 57, 58 of
UOCIII
NO
OK
Check the waveform at pin 4, 5 of IC11
OK
Check the waveform at pin 4, 12 of
IC601
Check/ Replace Q603
NO
OK
Check the waveform at pin 6 of IC601
Check/ Replace IC601
NO
OK
Check the waveform at pin 1, 2, 14, 15
of IC601
Check/ Replace R823, D826
Check the Heater voltage of
CPT(6~6.4 Vrms)
Check R, G, B out of CPT board
Check IC901,
P402A
Check 190V line of CPT Board &
if no problem check and Replace
Check the Heater pulse of FBT T402
Check RF901, P903C,
P903B, FR401 Check FBT T402
Check HV, Screen voltage of CPT
Check FBT T402
NO
OK
Check the waveform at pin 3, 13 of
IC601
2) No Raster / Sound OK(1/2)
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

- 13 -
3) No Raster (2/2)
Check the in/out of
regulator(IC822,
IC823, IC824)
Check pin 73 of
IC11(H_Out) Check the voltage of
C832
Check/ Replace Fuse
Is the voltage each
pin voltage of IC11 Check Fuse of AC line
Check/ Replace
IC11
Check T401 & each
pin voltage
Check Q401collect
waveform
Check & Replace
T402
Check the voltage
pin4 of IC810
Check/ Replace
IC810, IC802, Q830
Check Fuse and Diode of secondary
Load of SMPS trans(T802)
Check the B+at D829
cathode
OPEN
Check/ Replace DB801
NO
Check/ Replace Fuse and IC810
NO
OK
NO
Normal Abnormal
Check/ Replace
Q402
Check/ Replace
T401
Check/ Replace
Q401
Check Q402
collector waveform
Check/ Replace IC11
NO
OK
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

- 14 -
4) No Picture/ No Sound
Is any OSD displayed?
OK
NO
NO
OK
OK
NO NO
OK
OK
NO
OK
OK
OK
P904A (R, G, B out
of IC501) P904A (R, G, B out of IC11)
Replace IC11
Check pin8, 12 SCL,
SDA Check IC12(EEPROM)
& SCL, SDA, Line
Check pin3 Reset
Voltage
Check IC11 pin 83,
84, 85 (R, G, B out) Check SMPS Trans Secondary Voltage Go to No sound/ picture OK
Check the waveform
pin73(H-out)
Check IC11 pin 83,
84, 85 (R, G, B out) Check receiving system in MENU & execute Auto - Program
Does the auto - Program
operate properly
Store on manual -program MENU
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

- 15 -
PRINTED CIRCUIT BOARD
MAIN
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

- 16 -
LED+PRE-AMP
CONTROL
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

- 17 -
BLOCK DIAGRAM
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

- 18 -
EXPLODED VIEW
590 530
300
120
330
320
310
311
591
331
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
400
943
112
170 150
913
520
504
P801
Copyright©2008 LG Electronics.Inc. All right reserved.
Only for training and service purposes. LGE Internal Use Only

P/N:EBY31683802 (080201)

SVC. SHEET : EBY31683802-S