4. TROUBLE SHOOTING
- 85 -
START
EARPHONE WILL
WORK PROPERLY.
Does the audio
profile of the phone change to
the earphone mode?
Insert the earphone to the phone.
Yes
No
Can you hear your vioce from
the earphone?
Yes
No
Set the audio part of the test
equipment to echo mode.
Earphone detect problem
Audio path problem
1
Set the audio part of the test
equipment to PRBS or continuous
wave mode.
Change the earphone and try again.
Can you hear your voice from
the earphone?
Change Earpho ne.
Yes
Can you hear the sound from
the earphone?
Yes
No
2
Earphone receiving path
problem
Earphone sending path
problem
3
4
No
voltage at C160=~1.2V
Yes
Check soldering
C160,R143,J102
Download S/W
No
Re-solder
C160,R143,J102
Not good
Yes
Replace
main board
3
Checking Flow
Earphone receiving path problem
Summary of Contents for C1150
Page 1: ...Service Manual Model C1150 Service Manual C1150 Date October 2005 Issue 1 0 ...
Page 3: ......
Page 99: ...Note 100 ...
Page 104: ... 105 8 PCB LAYOUT 8 PCB LAYOUT ...
Page 105: ... 106 8 PCB LAYOUT ...
Page 113: ...10 STAND ALONE TEST 114 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 117: ...Note 118 ...
Page 119: ... 120 Note ...
Page 135: ...Note 136 ...