LG 32lc41 Service Manual

							
- 11 -
8) Click OK button at the edit window.
9) Under Downloading process10) If download is failed, for example No acknowledge from slave. Execute download again from(1).
(2) Download method 2 (AV Plate Ass’y)
1) Push S/W ‘ON (connect SCL to GND using switch at Jig) and connect the download jig to D-sub jack.
2) Supply the power (Stand-by 5V) and wait for 3 seconds.
3) Push the S/W off (Disconnect SCL to GND using switch at jig). 4) Execute ‘Download.vi2c’ program in PC, then a main
widow will be opened.
5) Double click the blue box and confirm Bootloader Version as 42.
6) Click the Erase Flash button.
7) Double click the download file low then, edit window will be opened.
8) Chick the choice button I n the edit window, then file choice window’ will be opened.

Push S/W
Push S/W
 
						

							
- 12 -
9) Choose the Hex file in folder and execute downloadingwith click open button.
10) Click OK button at the edit window
11) Under Downloading progress.
12) If download is failed, for example No acknowledge from slave, execute download again from (1).
(3) Download method 3 (SET)
1) Push the “Tilt” button in an Adjust Remote control Thenthe LCD TV will change a “slave mode”. 2) Connect Zig to TV using a D-sub cable.
3) Execute ‘Download_CS.vi2c’ program in PC, then a
main widow will be opened.
4) Click GO button. If you don’t push the “go”, the Hex file would not be
downloaded although the download proceeds normally
at first glance.
5) Double click the blue box and confirm Bootloader Version as 42.
6) Click the Erase Flash button
 
						

							
- 13 -
7) Double click the download file low then, edit windowwill be opened.
8) Chick the choice button I n the edit window, then file choice window’ will be opened
9) Choose the Hex file in folder and execute downloading with click open button
10) Click OK button at the edit window
11) Downloading 12) If download is failed, for example No acknowledge
from slave, execute download again from (1).
4.3. Channel memory download
(1) Connect the download jig to D-sub jack.
(2) Execute ‘Channel.vi2c’ program in PC, then a mainwindow will be opened.
(3) Push the button change and select the Channel memory data.
(4) Check the communication is OK or not.
=> Push the Read area (Ackn. Check) and check Cyan area is OK message.
 
						

							
- 14 -
(5) Push the Update NVM from File
4.4. Tool Option Area Option Change
Before PCB check, have to change the Tool option and Area
option
Option values are below
(If on changed the option, the input menu can differ the model
spec.)
The input methods are same as other chassises(Use adj Key
on the Adjust Remote control)
4.5. Color carrier Adjustment(Inspection process)
(1) Tuning the RF signal
ZA, TA : PAL Philips Pattern(with color Bar)
MA : NTSC Digital Pattern(with color Bar)
(2) push the adj key in the adjustment remote control.
5. EDID(The Extended Display Identification Data )
/DDC(Display Data Channel)download
* Caution - Use the proper signal cable for EDID Download.
- Never connect HDMI & D-SUB Cable at the same time.
- Use the proper cables below for EDID Writing.
* EDID Data

< EDID DATA HDMI Set : 256bytes>

Tool Option
Inch ZA TA
26 02240 04288
32 02256 04304
37 02264 04312
42 02272 04320
Area Option Depend on PR
Item
Manufacturer ID
Version
Revision Condition
GSM
Digital : 1
Digital :3 Data
1E6D
01
03
For RGB EDIDFor HDMI EDID
 
						

							
=> Detail EDID Options are below(a, b, c, d, e)a. Product ID
b. Serial No :  Controlled on production line
c. Month, Year : Controlled on production line ex) Monthly: 03  =>  03 Year:  2005 =>  0F
d. Model Name(Hex): 
e. Checksum (7EH) : Changeable by total EDID data
5.1. Sequence of Adjustment
(1) DDC data of Analog-RGB 1) Init the data
2) Load the EDID data. (Open file)[Analog - RGB : LP78A_RGB.ANA]
[Digital - HDMI : LP78A_HDMI.DVI]
3)Set the S/W as below
4) Push the “Write Data & Verify”button. And confirm “Yes”.\
5) If the writing is finished, you will see the “OK” message.
6. Adjustment of White Balance
6.1. Required Equipment
(1) Remote control for adjustment 
(2) Color Analyzer (CA-110 or CA-210 or same product)
(3) Auto W/B adjustment instrument(only for Auto adjustment)
6.2. Connecting diagram of equipment for measuring 
(For Automatic Adjustment)
(1) Enter the DDC adjust mode
- Enter the DDC adjust mode at the same time heat-runmode when pushing the power on by power only key
- Enter the adjust mode and change the input mode to AV (ZA : AV3, TA,MA : AV2)when pushing the Front av key
- Maintain the DDC adjust mode with same condition of Heat-run -> Maintain after AC off/on in status of Heat-run
pattern display
(2) Release the DDC adjust mode - Release the adjust mode after AC off/on or std-by off/onin status of finishing the Hear-run mode
- Release the Adjust mode when receiving the aging off command(F3 00 00) from adjustment equipment
- Need to transmit the aging off command to TV set after finishing the adjustment.)
- 15 -

Model NameModel Name(HEX)32LC4R-ZA00 00 00 FC 00 33 32 4C 43 34 52 2D 5A 41 0A 20 2042LC4R-ZA00 00 00 FC 00 34 32 4C 43 34 52 2D 5A 41 0A 20 20


 
						

							
- 16 -
(3) DDC adjustment support command set
6.3. Adjustment of White Balance
(For Manual adjustment)
- Operate the zero-calibration of the CA-110 or CA-210, then stick sensor to LCD module when you adjust. 
- For manual adjustment, it is also possible by the following sequence1) Select RF no signal by pressing “ POWER ON”key on
remote control for adjustment then operate heat run
more than 15 minutes. 
(If not executed this step, the condition for W/B will be
differ. The W/B condition is Picture Mode : Standard
(MA : Optimum), Color Temp : Normal. )
2) Changing to the av mode by pushing the input or front av key.
3) Display the internal pattern of the VCT-Pro IC by pushing the IN-START.
4) Stick sensor to center of the screen and select each items (Red/Green/Blue Gain and Offset) using 
D/E
(CH+/-) key on R/C.
5) Adjust R Gain / B Gain using 
F/G(VOL+/-) key on R/C.
6) Adjust it until color coordination becomes as below.  (Initially, R/G/B gain and R/G/B offset values are fixed
as below)Red Gain : 80 ,   Green Gain : 80 ,    Blue Gain : 80
Red Offset : 80,  Green Offset : 80 ,  Blue Offset : 80
* Target Value [Picture Mode : Standard (ZA, TA), Optimum(MA),  Color Temp: Normal]-Normal (9300K)    x ; 0.283±0.003  y ; 0.298±0.003
-Luminance(Y)   AV : upper 150 cd/m
2(Typ : 350 cd/m2≥)
=> Reference Value(Automatically fixed) - Cool(11000K): x:0.274±0.003, y: 0.286±0.003
- Warm(7200K) : x:0.303±0.003, y: 0.319±0.003

7) When adjustment is completed, Exit adjustment modeusing EXIT key on R/C
6.4. Input the Shipping Option Data
1) Push the ADJ key in a Adjust Remote control.
2) Input the Option Number that was specified in the BOM,into the Shipping area.
3) The work is finished, Push 
AKey.
7. Default Value in Adjustment mode
(Default values maybe modified the module condition)
7.1. White Balance

8. Internal press test
9. Sound spec.
Adjustment
Aging On/Off
Input select
R GAIN
G GAIN
B GAINCMD(HEX)
F3
F4
16
18
1AADR 00
00
00
00
00
FF : ON / OO : OFF
0x10 : TV
0x20 : AV1(SCART1)
0x21 : AV2(SCART2)
0x23 : AV3(Side AV)
0x40 : Component1
0x50 : RGB DTV
0x60 : RGB PC
0x90 : HDMI1 DTV
GAIN adjustment
Internal pattern of VCT-PRO

Item
Dielectric Voltage (AC  FG)
Dielectric Voltage (Without FG)Value 1.5
3UnitkV
kVRemark
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
Item Min Typ Max Unit Remark
Audio Practical Max Output, L(Mono)/R 6 7 9 W LCD
 
						

							
- 17 -
TROUBLESHOOTING

1. No power
(1) Symptom
1) Minute discharge does not occur at module.
2) Front LED does not activate.
(2) Press check
Plug in the power cord
Start Check
No
Yes

Is the power cord
plugged in? 

Connect the cable.
Plasma(CN1)No
Yes
Are the line filter and
PSU connected?

Replace the fuse.No
Yes
Is the
correct fuse for
the PSU in place? LCD(F100)

Connect the 13-14pin cable.
Next remove all cables connected to the PSU and
switch the AV voltage to manual.
If the ST-by 5V does not operate, replace the PSU.
No
Yes
Is the
PSU and 13-14pin
cable connected to the VSC board?
 
						

							
- 18 -

2. Protect mode
(1) Symptom
1) After lighting once it does not discharge minutely from the module. \
2) The relay falls.(there is an audible “Click”.)
3) The color of the front LED turns from green to red.
(2) Follow check

Is the Power Boardnormal ? Replace Power Board.Is the output the normal Low/High
voltage except for the Stand-by 5V?
YesNo
No
Are all
the connectors normal? Replace the connector.
Replace the fuse.
Replace the Y-Board.
After checking each connector does
is operate correctly?
YesNo
No
Is the Y-Board
normal?

Is the
appropriate fuse
(FS2,FS3) on the Y-B/D? Is the output voltage
normal after removing the
P1 connector of the Y-B/D?
YesNo
No
Replace the Z-Board.Is the Z-Board
normal?
Is appropriate
fuse (FS1,FS2) on  the Z-B/D? Is the output voltage
normal after removing the
P1 connector of the Z-B/D?
Yes No
No
Is the X- Board
normal?
Is the 
output voltage normal 
after removing the  P100, 110, 200, 210 connector of the X-B/D?After removing the P100, 110 and the output
voltage is normal : Replace the Right X-B/D
After removing the P200, 210 and the output
voltage is normal : Replace the Left X-B/D
No
Yes
Replace the fuse.
Yes
Start Check
 
						

							
- 19 -
3. No Raster
(1) Symptom
1) No OSD or image are displayed on the screen. 
2) The front LED remains green.
(2) Follow check
4. In the case an unusual display in RF mode.

Check the PDP Module
Replace the
Power board.Does
minute discharge at Module?
Is the inverter/VaVs on? Is output the normal
Low/High voltage except
for the Stand-by 5V?
YesNo
No
Is there a fault with
the link cable?

Yes
Is the output for the IC500 normal? Reconnect the link cable in
P803(Plasma).
No
Replace the VSC.No
Yes

Check the power.(L1103)
Is the 
video output of the
Tuner normal? (Check TU400_Pin13)
Is the
input voltage
normal?(Check Pin3) Is the I2C communication normal?
(Check Pin9, Pin10)
YesNo
Yes
Is the LVDS
Cable connected?
Yes
Change the IC(IC500)
Re-insert the cable.No
No
Check the Tuner.
No
A
Start Check
 
						

							
- 20 -
5. In the case of an unusual display in rear AV mode.

Is video input of
the A/V jack normal? (Check R172)
Yes
Sam as Block A
Check the input source.No
6. In the case of an unusual display in Side AV mode.

Is the
video input of
the A/V jack normal? (Check CN703 Pin9)
Yes
Sam as Block A
Check the input source.No
7. In the case of an unusual display in Side S-Video mode.

Is the
video input of
the A/V jack normal (Check CN703 Pin1,Pin3)?
Yes
Sam as Block A
Check the input source.No