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4.15 Main LCD trouble
Main LCD control signals are generated by MSM6280. Those signal's path are :
MSM6280 → Z ORAN (Multimedia Chip) → 40-pin connector(CN300 in Main PCB) → 40-pin
connector (in LCD Module)
Check L CD_VDD_2.8V, LCD_RESET_N,
Change the Main BD
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Only for training and service purposes
START
Press END key
to turn the power on
Is th e ci rcuit po wered?
Yes
Disconn ect and reconn ect
40-pin B to B conn ector
LCD display OK?
No
LCD_DATA[ 0~15] in M ain BD
No
Change th e LCD module
4. TROUBLE SHOOTING
No
Follo w the P ower ON
trouble shoo ting
Yes
Displ ay OK?
No
- 169 -
Yes
Yes
The LCD works
End
LGE Internal Use Only
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