Only For Training And Service Purposes - LG AT&T GR500 Service Manual

4. TROUBLE SHOOTING
4.11.2. Speaker (Voice Loud Speaker,Midi, MP3,Key Tone)
• Signals to the speaker
–
–
Note : You ought to check whether R, L, Cs along the corresponding paths are soldered
well or not before following the trouble shooting guide next.
LGE Internal Use Only
Speaker signals are generated at AB3100
• SPKRP, SPKRN
Speaker path :
• 1.AB3100 (SPKRP, SPKRN)
• 2. C549, C550 on the main board
• 3. U501(audio amp ) on the main board
• 4. Speaker
- 98 - Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes