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Earphone will work Properly
Does the audio Profile
of the phone change to
the earphone mode?
Can you hear your vioce
from the earphone?
Earphone detect problem
Audio path problem
1
Can you hear your voice
from the earphone?
Change Earphone.
Can you hear the sound
from the earphone?
2
Earphone receiving
path problem
Earphone sending
path problem
3
4
Yes
Yes
No
No
Yes
No
No
START
Insert the earphone to the
handset.
Set the audio part of the test
equipment to echo mode
Change the earphone and
try again.
Set the audio part of the
test equipment to PRBS
or continuous wave mode
cf) PRBS : Pseudo Random Bit Sequence
Z3X-BOX.COM
Summary of Contents for CE500
Page 3: ... 4 Z 3 X B O X C O M ...
Page 77: ...4 TROUBLE SHOOTING 78 5 Check Tx I Q TXQP TXQN TXIN TXIP U704 Test Point Z 3 X B O X C O M ...
Page 85: ...Note 86 Z 3 X B O X C O M ...
Page 93: ... 94 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 94: ... 95 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 95: ... 96 Z 3 X B O X C O M ...
Page 103: ...9 CALIBRATION 104 L Standalone Test Equipment Setup Oscilloscope Z 3 X B O X C O M ...
Page 105: ... 106 Z 3 X B O X C O M ...
Page 127: ...Note 128 Z 3 X B O X C O M ...