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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
4.7 Slide Key side view LED Troubleshooting
Sub Key Pad Slide is on as below :
Key pressing Æ LED_CON go down low (below 0.8v) Æ Sub Key Backlight LED On
Slide Key side view LED Troubleshooting
START
+VPWR is above 3.2V?
Check battery
No
Yes
END
Change the FPCB
or KEY PCB
No
LED ON ?
Change the MAIN PCB
No
Yes
Key press
When the LCD is on,
TP2 is below 0.8v?
Yes