Slide Key Side View Led Troubleshooting - LG InTouch Lady Service Manual

Slide Key side view LED Troubleshooting

4.7 Slide Key side view LED Troubleshooting
Sub Key Pad Slide is on as below :
Key pressing LED_CON go down low (below 0.8v)
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Only for training and service purposes
START
Key press
+VPWR is above .2V?
Yes
When the LCD is on,
TP2 is below 0.8v?
Yes
LED ON ?
Yes
END
Sub Key Backlight LED On
No
Check battery
No
Change the FPCB
or KEY PCB
No
Change the MAIN PCB
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4. TROUBLE SHOOTING
LGE Internal Use Only