LG 42LX6500 Service Manual page 10

- Adjust sequence
Press the PIP key of the ADJ remote control. (This PIP
A
key is hot key to enter the VCOM adjusting mode)
(Or After enter Service Mode by pushing "ADJ" key, then
Enter V-Com Adjust mode by pushing "
Com")
A As pushing the right or the left button on the remote
control, And find the V-COM value Which is no or
minimized the Flicker.
(If there is no flicker at default value, Press the exit key
and finish the VCOM adjustment.)
Push the OK key to store value. Then the message
A
"Saving OK" is pop.
A Press the exit key to finish VCOM adjustment.
[Visual Adjust and control the Voltage level]
3.6. Model name & serial number download
(1) Model name & Serial number D/L
A Press "Power on" key of service remote control.(Baud
rate : 115200 bps)
Connect RS232 Signal Cable to RS-232 Jack.
A
Write Serial number by use RS-232.
A
Must check the serial number at Instart menu.
A
(2) Method & notice
A. Serial number D/L is using of scan equipment.
B. Setting of scan equipment operated by Manufacturing
Technology Group.
C.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.
a. Press the 'instart' key of ADJ remote control.
b. Go to the menu '5.Model Number D/L' like below photo.
c. Input the Factory model name(ex 42LD450-ZA) or Serial
number like photo.
d. Check the model name Instart menu -> Factory name
displayed (ex 42LE7500-ZA)
e. Check the Diagnostics (DTV country only) -> Buyer model
displayed (ex 42LE7500-ZA)
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Only for training and service purposes
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3.7. CI+ Key Download method
G " key at "10. V-
- 10 -
(1) Download Procedure
1) Press "Power on" button of a service R/C.(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 ass'y mode (RS232 : aa 00 00)
CMD 1 CMD 2
A A
2) check the key download for transmitted command
(RS232 : ci 00 10)
CMD 1 CMD 2
C I
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 ass'y mode (RS232 : aa 00 00)
CMD 1 CMD 2
A A
2) Check the method of CI+ key by command (RS232 :
ci 00 20)
CMD 1 CMD 2
C I
3) Result value
i 01 OK 1d1852d21c1ed5dcx
Data 0
0 0
Data 0
1 0
Data 0
0 0
Data 0
2 0
CI+ key Value
LGE Internal Use Only