SETTING : After initialize 5515C, Test US Cellular
START
Voltage at R434 = 1.2V?
(MIC BIAS Voltage Check)
Check the soldering
Of R434
Re-solder R434
Replace MSM
Check the signal level
At each side of MIC. Is
It a few tens mVAC?
Replace the microphone
Check the soldering of
C439, C440
Re-solder C439, C440
Check the soldering of
MIC Filter Part
Re-solder MIC Filter part
MIC will work properly
Checking Flow
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
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Summary of Contents for ID2750
Page 33: ...DCN Mode Graph 4 2 1763 04MHz DCN384 Z 3 X B O X C O M ...
Page 37: ...Waveform DP101 Pin 7 Graph 4 3 c DP101 Pin2 Graph 4 4 c Z 3 X B O X C O M ...
Page 48: ...Circuit Diagram Z 3 X B O X C O M ...
Page 49: ...Figure 4 3 1 PMIC PM6610 FUNCTIONAL BLOCK DIAGRAM 4 3 Logic Part Trouble Z 3 X B O X C O M ...