LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.13 Main LCD trouble
Main LCD control signals are generated by ESM6270. Those signal’s path are:
ESM6270
→
Z ORAN (Multimedia Chip)
→
40-pin connector(CN300 in Main PCB)
→
40-pin
connector (in LCD Module)
The LCD works
START
Press EN D key
to turn the p ower on
Is th e ci rcuit po wered?
Follo w the P ower ON
trouble shoo ting
LCD di spl ay OK?
Check L CD_VDD_2.8V, LCD_RESET_N,
LCD_DATA[ 0~15] in M ain BD
No
Yes
Yes
No
Disconn ect and r econn ect
40-pin B to B conn ector
Chang e th e Main BD
No
End
Yes
Displ ay OK?
Yes
Chang e th e LCD modul e
No
Содержание KE990 - Viewty Cell Phone 100 MB
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