4. TROUBLE SHOOTING
4.7.3 Loud speaker path (voice speaker phone/VT)
Loud speaker path as below:
MSM6280 HEADSET_R, HEADSET_L
U301(Speaker/Receiver Selection Switch)
connector)
→
CN101(LCD FPCB to Main PCB Connector)
Connect the phone to network
Connect the phone to network
Equipment and setup call
Equipment and setup call
Setup 1KHz tone out
Setup 1KHz tone out
Set phone with speaker phone mode
Set phone with speaker phone mode
The sine wave appear at
The sine wave appear at
The sine wave appear at
The sine wave appear at
Change the speaker
Change the speaker
LGE Internal Use Only
→
C324,C301
→
FB302,FB303
Start
Start
FB302,FB303
FB302,FB303
YES
YES
pads of speaker?
pads of speaker?
YES
YES
YES
YES
END
END
- 88 -
→
U805(Audio Codec)
→
CN502(Main PCB to LCD FPCB
→
OUT1, OUT2(SPK PAD)
NO
NO
Change the Main board
Change the Main board
NO
NO
change the LCD FPCB
change the LCD FPCB
Copyright © 2008 LG Electronics. Inc. All right reserved.
→
SPK_R, SPK_L
→
→
Speaker
Only for training and service purposes