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4.15 Audio Trouble Shooting
4.15.1 Receiver Path
Voice Receiver path as below:
MSM6250A Ear1ON/Ear1OP -> U605(Speaker/receiver switch) -> CN501(b’d to b’d connector)
-> MAIN FPCB(b’d to b’d connector) -> Speaker
Start
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
The sine wave appear at
Speaker soldering point?
Can you hear the tone?
YES
END
Change the speaker
Hear the tone to the receiver
NO
NO
Check connector pin and
Speaker soldering point.
Or Change the LCD FPCB
YES
The sine wave appear at
R525, R526?
Change the Main board
NO
YES
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Summary of Contents for L601i
Page 1: ...Date October 2006 Issue 1 0 Service Manual Model L601i Service Manual L601i Z 3 X B O X C O M ...
Page 3: ... 4 Z 3 X B O X C O M ...
Page 45: ...3 TECHNICAL BRIEF 46 Figure PM6650 2 Functional Block Diagram Z 3 X B O X C O M ...
Page 105: ...4 TROUBLE SHOOTING 106 Audio AMP 22 and 23 pin of CN501 Z 3 X B O X C O M ...
Page 109: ...4 TROUBLE SHOOTING 110 Ear_sense_n pin R506 R507 R505 Z 3 X B O X C O M ...
Page 112: ...4 TROUBLE SHOOTING 113 Q400 Q401 VBAT T GND Z 3 X B O X C O M ...
Page 125: ...5 DOWNLOAD 126 Click on X button to use another function Z 3 X B O X C O M ...
Page 130: ...6 BLOCK DIAGRAM 131 6 2 Interface Diagram L601i Interface Diagram Z 3 X B O X C O M ...
Page 132: ...6 BLOCK DIAGRAM 133 Top Side Z 3 X B O X C O M ...
Page 133: ... Bottom Side 6 BLOCK DIAGRAM 134 Z 3 X B O X C O M ...
Page 141: ... 142 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 142: ... 143 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 143: ... 144 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 144: ... 145 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 145: ... 146 Z 3 X B O X C O M ...
Page 151: ... 152 Z 3 X B O X C O M ...
Page 153: ... 154 Z 3 X B O X C O M ...
Page 176: ...Note Z 3 X B O X C O M ...
Page 177: ...Note Z 3 X B O X C O M ...