5. Trouble shooting
START
Check All of LEDs solder
Check VBAT | No | |
Check BATTERY | ||
Yes |
| |
check GPIO | No | |
signal(SUB_KEY_BL | Replace TR(Q100) | |
,TP2) Voltage of | ||
| ||
Q100 > 0.7v |
|
check GPIO | No | Resolder or |
signal(QWERTY_KE |
| |
Y_BL, TP1) Voltage |
| Replace VA301 or U102 |
of VA301 < 1.0v |
|
|
Yes
KEY_LED is operating
Copyright © 2008 LG Electronics. Inc. All right reserved. | - 83 - | LGE Internal Use Only |
Only for training and service purposes |
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