LG 37LH250H Service Manual page 12

* USB DOWNLOAD(*.epk file download)
1. Put the USB Stick to the USB socket
2. Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is Low, it
didn't work. But your downloaded version is High, USB data
is automatically detecting
3. Show the message "Copying files from memory"
4. Updating is staring.
5. Updating Completed, The TV will restart automatically.
6. If your TV is turned on, check your updated version and Tool
option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have, TV
can lost all channel data. In this case, you have to channel
recover. if all channel data is cleared, you didn't have a
DTV/ATV test on production line.
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
* After downloading, have to adjust TOOL OPTION again.
1. Push "Adj" key in service remote controller.
2. Select "Tool Option 1~ 4" and Push "OK" button.
3. Punch in the number. (Each model has their number.)
Model Tool option1
37LH250H-UA 22273
32LH250H-UA 18177
42LH250H-UA 26369
4. Completed selecting Tool option
4. Board-level adjustment
4.1 ADC adjustment
4.1.1 Overview
ADC adjustment is needed to find the optimum black level and
gain in Analog-to-Digital device and to compensate RGB
deviation.
4.1.2 Equipment & Condition
1) Jig (RS-232C protocol)
2) Input : MSPG-925FS(Model : 209 ,Pattern : 65, Only
component))
3) RGB Adjust use internal pattern.
4.1.3 Adjustment
4.1.3.1 Method
• Using RS-232, adjust items listed in 3.1 in the order shown in
"4.1.3.3".
4.1.3.2 Adj. protocol
Protocol Command
Enter adj. ad 00 00
mode
Begin adj. ad 00 10
Return adj.
result
Read adj. (main)
data ad 00 20
(sub )
ad 00 21
Confirm adj. ad 00 99
End adj. ad 00 90
Ref.) ADC adj. RS232C Protocol_Ver1.0
4.1.3.3 Adj. order
• ad 00 00 [Enter ADC adj. mode]
• ad 00 10 [Adjust 480i Comp1/1080p Comp1/1024*768 RGB]
• ad 00 90 End adj.
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Tool option1 Tool option1 Tool option1
1576 33056
1576 33056
1576 33056
Set ack
d 00 OK00x
OKx (Success)
NGx (Fail)
(main)
000000000000000000000000007c007b006dx
(Sub)
000000070000000000000000007c00830077x
NG 03 00x (Fail)
NG 03 01x (Fail)
NG 03 02x (Fail)
OK 03 03x (Success)
d 00 OK90x
LGE Internal Use Only
1024
1024
1024