LG 24LF4520, Service Manual

- 10 -

LGE Internal Use Only

Copyright  © 

  LG Electronics. Inc. All right reserved. 

Only for training and service purposes

ADJUSTMENT INSTRUCTION

1. Application Range

This document is applied to LU40A chassis TV which is manu-

factured in TV (or Monitor) Factory or is produced on the basis 

of this data.

2. Designation

1)  The adjustment is according to the order which is designat-

ed and which must be followed, according to the plan which 

can be changed only on agreeing.

2) Power adjustment : Free Voltage.

3) Magnetic Field Condition: Nil.

4) Input signal Unit: Product Specification Standard.

5) Reserve after operation: Above 5 Minutes (Heat Run)

Temperature : at 25 °C ± 5 °C

Relative humidity : 65 % ± 10 %

Input voltage : 220 V, 60 Hz

6)  Adjustment equipments : Color Analyzer (CA-210 or CA-

110), DDC Adjustment Jig equipment, SVC remote control-

ler.

7) Push The "IN STOP KEY" – For memory initialization

3. Main PCB check process

* APC - After Manual-Insult, executing APC

* Boot file Download

1)  Execute ISP program “Mstar ISP Utility” and then click 

“Config” tab.

2)  Set as below, and then click “Auto Detect” and check “OK” 

message. If display “Error”, Check connect computer, jig, 

and set.

3)  Click “Connect” tab. If display “Can’t ”, Check connect 

computer, jig, and set.

4)  Click “Read” tab, and then load download file(XXXX.bin) by 

clicking “Read”

5) Click “Auto” tab and set as below

6) Click “Run”.

7) After downloading, check “OK” message. 

* USB DOWNLOAD(*.epk file download)

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 “Copy the file from the Memory…”

5) Updating is starting.

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.

(1) 

(3) 

(2)                    OK

Please Check the Speed :   
Use the speed under 
200KHz. 

(4) 

filexxx.bin

(6) 

(5) 

(7) ……….OK 

(5) 

Case1 : Software version up

1)  After downloading S/W by USB , Multi-vision set will 

reboot automatically

2) Push "In-stop" key

3) Push "Power on" key

4) Function inspection

5) After function inspection, Push "In-stop" key.

Case2 : Function check at the assembly line

1)  When TV set is entering on the assembly line, Push "In-

stop" ke y at first.

2) Push "Power on" key for turning it on.

→  If you push "Power on" key, TV set will recover channel 

information by itself.

3) After function inspection, Push "In-stop" key.