LG LG9200 Service Manual page 60

Keypad Backlight Trouble (Qwerty Key) : (2)
KEY2 : EL charge pump pin 5
OUT605
• Trouble Shooting Setup
- Connect PIF-UNION to the phone, and
power on.
- Open the slide part.
OUT608
Check contacting this point !
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4. TROUBLE SHOOTING
Check soldering this point !
L601
U602
Q602
C602 C601
• Trouble Shooting Procedure
- Check the soldering of components.
- Check the KEY2.
- Check OUT605 or OUT608 (200Vp-to-p).