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4.13 Ear Jack Trouble
START
Inset the earphone
to the phone
Set the audio part of the test
equipment to echo mode.
Earphone will work
properly
Voltage at
C224=~1.6V
Voltage at pin4
of U203=~1V
Check soldering
of R226,C228
Replace
main board
Re-soldering
R226,C228
Re-soldering
R219
Re-soldering
U301
Replace
main board
voltage at pin1 of
U204 =2.8V?
Check the
soldering U204
Check the
soldering J200
Replace
U204
Re-soldering
U204
Re-soldering
U204
Download
S/W
Change the earphone
and try again
Can you hear your voice
from the earphone?
Set the audio part of test
equipment to PRBS or
continuous wave mode
Can you hear your voice
from the earphone?
voltage at
C227=~1.2V
Check soldering
C227,R224,J200
Download
S/W
Re-solder
C227,R224,J200
Can you
hear your voice from the
earphone?
Does the audio profile of
thephone change to the
earphone mode?
Yes
No
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Not good
Yes
Yes
No
Yes
No
Yes
No
4. TROUBLE SHOOTING
SETTING : After Initialize Agilent 8960, Test in EGSM, DCS Mode.
Содержание C3100
Страница 1: ...Service Manual Model C3100 Service Manual C3100 P N MMBD0033001 Date June 2004 Issue 1 0 ...
Страница 51: ...Graph 4 15 EGSM TX 50 VCX VC2 VCX VC2 4 TROUBLE SHOOTING Graph 4 14 DCS TX ...
Страница 67: ...5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 66 5 DISASSEMBLY INSTRUCTION ...
Страница 68: ... 67 5 DISASSEMBLY INSTRUCTION Figure 5 3 Figure 5 4 ...
Страница 69: ... 68 Figure 5 5 5 DISASSEMBLY INSTRUCTION ...
Страница 70: ... 69 5 DISASSEMBLY INSTRUCTION Figure 5 6 Figure 5 7 1 3 2 4 1 2 3 ...
Страница 71: ... 70 Figure 5 8 Figure 5 9 5 DISASSEMBLY INSTRUCTION 4 2 3 1 2 1 ...
Страница 72: ... 71 5 DISASSEMBLY INSTRUCTION Figure 5 10 ...
Страница 83: ... 82 7 BLOCK DIAGRAM 7 BLOCK DIAGRAM Power supply ...
Страница 90: ... 89 9 PCB LAYOUT 9 PCB LAYOUT ...
Страница 91: ... 90 9 PCB LAYOUT ...
Страница 98: ... 97 11 3 HW Test Software for Standalone Test Setup 11 STAND ALONE TEST ...
Страница 100: ... 99 Tx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 102: ... 101 Rx Stand alone Test Setting 11 STAND ALONE TEST ...
Страница 104: ... 103 12 3 Equipment Setup Figure 12 1 Equipment Setup 12 AUTO CALIBRATION ...
Страница 107: ... 106 12 AUTO CALIBRATION ...
Страница 108: ... 107 13 EXPLODED VIEW REPLACEMENT PART LIST 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded View ...
Страница 109: ... 108 13 EXPLODED VIEW REPLACEMENT PART LIST ...