LG 22MT47D, Service Manual

Page: 11 / 32

- 11 - LGE Internal Use Only
Copyright © LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.1. EDID Process
3.1.1. EDID download
1) Press “Power only” key of service remote controller.
2) Press the “ADJ” Key of service remote controller.
3) Enter EDID D/L mode by pushing “►” key at “EDID D/L”.
4) Select “Start” menu to download EDID data.
5) Check the “OK” message.
6) Press EXIT key on R/C.
→ Caution: - Do not connect HDMI & D-sub Cable when
download EDID.
* Edid data and Model option download (RS232)
→ Caution
* Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
3.1.2. EDID
- RGB : Check sum : BC
- HDMI : Checksum : 15 CE
3.2. Function Check
3.2.1. Check display and sound
*Check Input and Signal items. (cf. work instructions)
1) TV
2) AV (SCART/CVBS)
3) COMPONENT (480i)
4) HDMI(PC : 1366 x 768 @ 60Hz)
5) RGB(PC : 1366 x 768 @ 60Hz)
6) PC Audio In
* Display and Sound check is executed by Remote controller
* Some models do not support RGB & PC audio in. It depends
on model spec.
→ Caution : Not to push the INSTOP KEY after completion if
the function inspection.
3.3. CI+ key writing process.
(Device CN)
3.3.1. Download method
3.3.1.1. Communication Prot Connection
Connection : PCBA (USB Port) → USB to Serial Adapter (UC-
232A) → RS-232C cable → PC(RS-232C port)
3.3.2. CI+ Key Download
1) Set CI+ Key path Directory at Start Mac & CI+ Download
Programme.
2) Set COM 1,2,3,4 / 115200(Baudrate) (1)/(2)
3) Click port connection button(1)
4) Start CI+ Key Download, Push the button(4)
5) Check OK or NG.
6) After completing download, CI + key values are increase by
one automatically. To write CI+ key next SET, click CI+ key
writing button(5) directly.
7) Check whether the key was downloaded or not at ‘In Start’
menu. (Refer to below).
NO Item CMD
1
CMD
2
Data 0
Enter
download
MODE
Download
‘Mode In’
A A 0 0 When transfer the
‘Mode In’,
Carry the command.
EDID data and
Model option
download
Download A E 00 10 Automatically download
(The use of a internal
Data)
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