4. TROUBLE SHOOTING
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4.16.3 Loud Speaker path(voice speaker phone, VT, multimedia play, etc)
Loud speaker path as below:
MSM6250A HPL_L -> R502 -> C501 -> R503 -> U500(AMP) -> CN600 -> Camera FPCB (b’d to b’d
connector) -> Speaker
Start
The sine wave appear at
R502?
Change the Main board
NO
Connect the phone to network
Equipment and setup call
Setup 1KHz tone out
Set phone with speaker Phone mode
The sine wave appear at
C501, R503?
YES
Check R502, C501, R503 or
Change the Main board
NO
Check U500
NO
YES
YES
Can you hear the tone?
Change the speaker
NO
YES
END
YES
The sine wave appear at
14 and 15 pin of CN600
The sine wave appear at
Speaker soldering point?
NO
Check connector pin and
Speaker soldering point.
Or Change the Camera FPCB
Z3X-BOX.COM
Содержание L602i
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Страница 34: ...3 TECHNICAL BRIEF 35 3 7 Hardware Architecture Figure Simplified Block Diagram Z 3 X B O X C O M ...
Страница 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram Z 3 X B O X C O M ...
Страница 71: ...4 TROUBLE SHOOTING 72 4 2 SIGNAL PATH WCDMA Tx PATH WCDMA Rx PATH Z 3 X B O X C O M ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 5 5 Check RF Rx Level TP1 TP3 TP4 Bias1 TP2 Z 3 X B O X C O M ...
Страница 101: ...4 TROUBLE SHOOTING 102 LCD Control data flow Z 3 X B O X C O M ...
Страница 109: ...4 TROUBLE SHOOTING 110 AUDIO AMP R502 C501 R503 FP500 501 CN600 PIN 14 15 Speaker Soldering Point Z 3 X B O X C O M ...
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Страница 130: ...5 DOWNLOAD 131 Click on X button to use another function Z 3 X B O X C O M ...
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