42PT250-ZG (CHASSIS:PD13K) - LG TV Service Manual (repair manual). Page 7

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(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.

* After downloading, have to adjust TOOL OPTION again.

(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each of models has their number.)
(4) Completed selecting Tool option.

<LM1R>

G

” key at “5. ADC

Calibration”

* Caution: Using ‘power on’ button of the Adjustment R/C , power

on TV.

* ADC Calibration Protocol (RS232)

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

* Required equipment : Adjustment R/C. 

- Check Input and Signal items. (cf. work instructions) 
(1) TV
(2) AV (SCART1/SCART2/ CVBS)
(3) COMPONENT (480i)
(4) RGB (PC : 1024 x 768 @ 60hz)
(5) HDMI
(6) PC Audio In 

* Display and Sound check is executed by Remote

controller.

* Caution : Not to push the INSTOP KEY after completion if the

function inspection.

Model

Module

Tool Tool  Tool  Tool  Tool 

option1 option2   option3  option4 option5

50PT35*- Z*

50T3

37312

21582

54144

27148

3104

50PT250- Z*

50T3

37376

21582

54144

27148

3104

50PT250A- Z* 50T3

37376

21582

54144

27148

3104

50PT250N- Z* 50T3

37376

21582

37760

27148

3104

42PT35*- Z*

42T3

25024

21582

54144

27148

3104

42PT250-Z*

42T3

25088

21582

54144

27148

3104

42PT450-Z*

42T3

25280

37966

54144

27148

2080

NO

Item

CMD 1 CMD 2 Data 0

Enter   Adjust 

A

A

0    0

When transfer the

Adjust 

‘Mode In’

‘Mode In’

Mode

Carry the

command.

ADC 

ADC 

A

D

1    0

Automatically

adjust

Adjust

adjustment

(The use of 

a internal pattern)