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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.12 Main LCD trouble
Main LCD control signals are generated by MSM7201A. Those signal’s path are :
MSM7201A
→
20-pin LCD connector
→
LCD Module
The LCD works
START
Press END key
to turn the power on
Is th e ci rcuit po wered?
Follow the P ower ON
trouble shoo ting
LCD display OK?
Check VREG_ LCD_2.8V, VREG_MSME_1.8V
LCD_RESET_N in Main BD
No
Yes
Yes
No
Disconn ect and r econn ect
20-pin B to B
conn ecto r
Change the Main BD
No
End
Yes
Display OK?
Yes
No
No
Change the LCD module
Summary of Contents for CT815
Page 1: ...Date May 2009 Issue 1 0 Service Manual Model CT815 Service Manual CT815 Internal Use Only ...
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