4. TROUBLE SHOOTING
- 58 -
4.8 Speaker Trouble
4.8 Speaker Trouble
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 C235
= 3.3 V?
Replace U202
( Melody IC
LDO)
No
Yes
The voltage
of R209 is ~2.8V
Yes
Check the state of contact of
dual mode speaker
Speaker
Working!!
Yes
Check the soldering of
U202
No
Yes
Re-soldering
U202
Voltage across C238
= 2.8 V?
Check the signal level of
R234, R236
No
No
Yes
Replace U302
Check the soldering of
U302
No
Yes
Re-soldering
U302
Replace U200
No
Replace U201
Check the soldering of
U201
No
Yes
Re-soldering
U201
No
Replace speaker
Summary of Contents for G1610
Page 1: ...Service Manual Model G1610 Service Manual G1610 P N MMBD0045701 Date February 2005 Issue 1 0 ...
Page 52: ...4 TROUBLE SHOOTING 51 Graph 4 14DCS TX Graph 4 15EGSM TX VC1 VC2 VC1 VC2 VC1 VC2 VC1 VC2 ...
Page 70: ...5 DISASSEMBLY INSTRUCTION 69 5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 ...
Page 71: ...5 DISASSEMBLY INSTRUCTION 70 Figure 5 3 Figure 5 4 ...
Page 72: ...5 DISASSEMBLY INSTRUCTION 71 Figure 5 5 ...
Page 73: ...5 DISASSEMBLY INSTRUCTION 72 Figure 5 6 1 3 2 4 Figure 5 7 1 2 3 ...
Page 74: ...5 DISASSEMBLY INSTRUCTION 73 Figure 5 8 4 2 3 1 2 1 Figure 5 9 ...
Page 75: ...5 DISASSEMBLY INSTRUCTION 74 Figure 5 10 ...
Page 86: ...7 BLOCK DIAGRAM 85 7 BLOCK DIAGRAM Power supply ...
Page 87: ... 86 ...
Page 108: ...12 AUTO CALIBRATION 107 12 3 Equipment Setup Figure 12 1 Equipment Setup ...
Page 111: ...12 AUTO CALIBRATION 110 ...