42LT360C-ZA (CHASSIS:LD2AC) - LG TV Service Manual (repair manual). Page 13

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5. Model name & Serial number D/L
▪ Press "Power on" key of service remote control.
(Baud rate : 115200 bps)
▪ Connect RS232 Signal Cable to RS-232 Jack.
▪ Write Serial number by use RS-232.
▪  Must  check  the  serial  number  at  the  Diagnostics  of  SET  UP 
menu. (Refer to below).
5.1. Signal Table
CMD : A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low (00~FF)
Data : Write data
CS : CMD + LENGTH + ADH + ADL + Data_1 +...+ Data_n
Delay : 20ms
5.2. Comand Set
* Description
FOS Default write : <7mode data> write
Vtotal,  V_Frequency,  Sync_Polarity,  Htotal,  Hstart,  Vstart,  0, 
Phase
Data write :  Model Name and Serial Number write in EEPROM,.
5.3. Method & notice
(1) Serial number D/L is using of scan equipment.
(2)  Setting  of  scan  equipment  operated  by  Manufacturing 
Technology Group.
(3)  Serial number D/L must be conformed when it is produced in 
production  line,  because  serial  number  D/L  is  mandatory  by 
D-book 4.0.
* Manual Download(Model Name and Serial Number)
If the TV set is downloaded by OTA or Service man, sometimes 
model name or serial number is initialized.(Not always)
There is impossible to download by bar code scan, so It need 
Manual download.
1) Press the "Instart" key of Adjustment remote control.
2) Go to the menu "5.Model Number D/L" like below photo.
3)  Input the Factory model name or Serial number like photo.
4)  Check the model name Instart menu. → Factory name displayed. 
(ex 42LD450-ZA)
5)  Check  the  Diagnostics.(DTV  country  only)  →  Buyer  model 
displayed.(ex 42LD450)
CMD
LENGTH
ADH
ADL
DATA_1
. . .
Data_n
CS
DELAY
Adjust mode
CMD(hex)
LENGTH(hex)
Description
EEPROM WRITE
A0h
84h+n
n-bytes Write (n = 1~16)
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