4. TROUBLE SHOOTING
- 75 -
Checking Flow
SETTING : Connect PIF to the phone, and Power on. Enter the engineering mode, and set
"Melody on" at Buzzer of BB test menu.
START
Voltage across C409
> 3.3 V?
Replace U102
( ABB LDO)
No
Yes
The voltage
of R075 is ~2.8V
Yes
Check the state of contact of
dual mode speaker
Speaker
Working!!
Yes
Check the signal level of
C406,C407
No
Replace U401
No
Replace U402
Check the soldering of
U402
No
Yes
Re-soldering
U402
No
Replace speaker
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 ...