42LV355H-ZA (CHASSIS:LD0AZ) - LG TV Service Manual (repair manual). Page 13

* 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(ex 42LD450-ZA) 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)

(1) Download Procedure

1) Press “Power on” key of a service remote control.

(Baud rate : 115200 bps)

2) Connect RS232-C Signal Cable.
3) Write CI+ Key through RS-232-C.
4) Check whether the key was downloaded or not at ‘In

Start’ menu.(Refer to below).

=> Check the Download to CI+ Key value in LGset.

1. Check the method of CI+ Key value.

a. Check the method on Instart menu.
b. Check the method of RS232C Command.

1) Into the main assembly mode (RS232 : aa 00 00)

2) Check the key download for transmitted command.

(RS232 : ci 00 10)

3) Result value

- Normally status for download : OKx
- Abnormally status for download : NGx

2. Check the method of CI+ Key value. (RS232)

1) Into the main assembly mode (RS232 : aa 00 00)

2) Check the method of CI+ key by command.

(RS232 : ci 00 20)

3) Result value

i 01 OK 1d1852d21c1ed5dcx

- 13 -

CMD 1

CMD 2

Data 0

A

A

0

0 

CMD 1

CMD 2

Data 0

C

I

1

0 

CMD 1

CMD 2

Data 0

A

A

0

0 

CMD 1

CMD 2

Data 0

C

I

2

0 

CI+ key Value