22LS5400, 22LS540T (CHASSIS:LD02M) - LG TV Service Manual (repair manual). Page 11

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3.4. CI+ key writing process. (Device CN)
(1)  Press  "Power  on"  button  of  a  service  R/C.(Baud  rate  : 
115200 bps)
(2) Connect USB.
(3) Write CI+ Key through RS-232-C.
*  Connect  TV  SET  and  PC  which  download  keys  Writing 
program by USB-Cable
1)  Start “CIKey.exe”Program and Click (3) Button to connect 
TV and PC.
2) Click (5) to download CI+ Key.
3)  When download succeed, you can see “OK” on Message 
tab.
4)  Check  whether  the  key  was  downloaded  or  not  at  ‘In 
Start’ menu. (Refer to below).
=> Check the Download to CI+ Key value in LG set.
3.4.1. Check the method of CI+ Key value
(1) Check the method on Instart menu
(2) Check the method of RS232C Command 
1) Into the main ass’y 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
3.4.2. Check the method of CI+ key value(RS232)
1) Into the main ass’y mode(RS232: aa 00 00)
2) Check the mothed of CI+ key by command
    (RS232: ci 00 20)
3) Result value
i 01 OK 1d1852d21c1ed5dcx
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
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