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LG M2550D Service Manual

LG M2550D
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4.2 DOWNLOAD USB
1) Make New folder named “LG_DTV” and put ISP file(*.epk)
in the folder.
2) Put the USB Stick to the USB socket
3) 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
4) Show the message “Copying files from memory”
5) Updating is staring.
6) Updating Completed, The TV will restart automatically.
7) 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.
* After downloading, have to adjust TOOL OPTION again.
1) Push "ADJ" key in service remote controller
2) Select "1.Tool Option" and Push “OK” button
3) Punch in the number. (Each model has their number.)
4) Completed selecting Tool option
4.3 ADC Process
1) Press the “ADJ” KEY on R/C and enter EZ ADJUST.
2) Enter ADC Calibration mode by pushing “
G”key at “6. ADC
Calibration”.
3) Push the “Start” button.
4) ADC Calibration External is executed automatically.
5) Press “EXIT”key on R/C.
Adjust Sequence
*aa 00 00 [Enter Adjust Mode]
*xb 00 40 [Component1 Input (480i)]
*ad 00 10 [Adjust 480i Comp1]
*xb 00 60 [RGB Input (1024*768)]
*ad 00 10 [Adjust 1024*768 RGB]
*aa 00 90 End Adjust mode
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
- 12 -
NO. Item CMD 1 CMD 2 Data 0
Enter Adjust ‘Mode In’ A A 0 0 When transfer the ‘Mode In’
Adjust MODE Carry the command.
ADC adjust ADC Adjust A D 1 0 Automatically adjustment
(The use of a internal pattern)

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LG M2550D Specifications

General IconGeneral
3DNo
Aspect ratio16:9
Display surfaceMatt
Display diagonal25 \
Viewing angle, vertical160 °
Contrast ratio (dynamic)5000000:1
Display number of colors16.78 million colors
Viewing angle, horizontal170 °
Digital vertical frequency56 - 75 Hz
Digital horizontal frequency30 - 83 kHz
Display brightness (typical)250 cd/m²
Supported graphics resolutions1920 x 1080 (HD 1080)
Audio systemDolby Surround X
TV tuner integratedYes
Screen format adjustments4:3, 14:9, 16:9
Digital signal format systemDVB-C, DVB-T
CertificationTUV-GS, FCC-B, CE.
Product colorBlack
Market positioning-
Compliance industry standardsDDC2B
RMS rated power6 W
Number of speakers2
USB hub version2.0
DVI-I ports quantity0
LED indicatorsPower
Tilt angle range-5 - 15 °
Panel mounting interface200 x 100 mm
AC input voltage100 - 240 V
AC input frequency50 - 60 Hz
Power consumption (standby)0.3 W
Power consumption (typical)50 W
Cables includedAC, VGA
Sustainability certificatesENERGY STAR
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)180 mm
Height (with stand)451 mm
Weight (with stand)4850 g
Depth (without stand)53 mm
Width (without stand)595 mm
Height (without stand)382 mm
Weight (without stand)4280 g

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