LG KF690 Service Manual page 74

4.7.3 Loud speaker path (voice speaker phone)
Loud speaker path as below:
ESM6270 SPK_R, SPK_L
(Speaker/Receiver Selection Switch)
FPCB to Main PCB Connector)
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
→ →
C504, C505 R505, R507
→
CN300(Main PCB to LCD FPCB connector)
→
OUT100, OUT101(SPK PAD)
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4. TROUBLE SHOOTING
→
U504(SPEAKER AMP)
→
Speaker
→
U501
→
CN102(LCD
LGE Internal Use Only