4. TROUBLE SHOOTING
- 94 -
SETTING : After initialize Agilent 8960, Test EGSM, DCS, PCS mode
START
Voltage across C120
is about 2.5V?
No
MIC Bias Voltage
Check the signal level at
each side of MIC201.
Is it a few tens mVAC?
Replace the microphone
Check the soldering of
R206, R208, C208
Resolder R206, R208, C208
MIC will work properly.
Change Main board.
Replace U101.
Voltage VMIC of U101
is about 2.5V?
Resolder R202 & R203.
No
Yes
No
Yes
Yes
No
Yes
Checking Flow
Summary of Contents for M6100
Page 1: ...Date February 2006 Issue 1 0 Service Manual Model M6100 Service Manual M6100 ...
Page 3: ... 4 ...
Page 15: ...3 TECHNICAL BRIEF 16 Figure 3 1 SKY74400 FUNCTIONAL BLOCK DIAGRAM ...
Page 40: ...3 TECHNICAL BRIEF 41 3 7 CAMERA IC AIT813 U701 Figure 3 18 AIT813 APPLICATION BLOCKDIAGRAM ...
Page 42: ...3 TECHNICAL BRIEF 43 3 8 MIDI IC YMU787 U708 Figure 3 20 YMU787 BLOCKDIAGRAM ...
Page 63: ...4 2 TX Trouble 4 TROUBLE SHOOTING 64 SKY74400 FEM 13Mhz OSCILLATOR TEST POINT Figure 4 2 ...
Page 98: ...4 TROUBLE SHOOTING 99 4 16 Camera and Flash Trouble Camera Module CN802 U704 U705 Figure 4 17 ...
Page 109: ... 110 ...
Page 119: ... 120 8 PCB LAYOUT ...
Page 120: ... 121 8 PCB LAYOUT ...
Page 121: ... 122 8 PCB LAYOUT ...
Page 122: ... 123 8 PCB LAYOUT ...
Page 123: ... 124 ...
Page 131: ...10 STAND ALONE TEST 132 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 137: ... 138 ...
Page 159: ...Note ...
Page 160: ...Note ...