W995
1230-1858 rev. 1
TROUBLESHOOTING
T
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O
UBL
ESHOOT
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Handsfree (PHF) Problems - Audio Jack Problems
START
Note !
Before following this guide make sure that the
Hands-Free (PHF) Connection is working properly.
Load ETS SW into the Phone
Use the TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Use Hands-Free (PHF) Set
Continue with the
Hands-Free (PHF) Aux Earphone Problems TRS guide
1:
Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
PHF Earphone
2:
Disconnect: DCIO/SEPI from the PBA
3:
Connect the PHF set to the PBA
Can you
hear the 1 kHz tone
In the PHF
Earphone
Go to
Hands-Free (PHF)
Aux Microphone
Problems TRS guide
Yes
No
More than
400mV AC Pk-Pk
1 kHz signal at MP 31
(C3149) and
MP 33 (C3150)
SL 5 Replace
N2000 or N2010
SL 4 Escalate
No
Yes
No
Disconnect VBATT and PHF Set and
Remove PBA from the TRS Fixture
Are
L2403, L2404,
L2440, L2443
= Max 2 Ohm
Replace
L2403, L2404,
L2440 or L2443
No
Is L2406
= Max 1 Ohm
SL 4 Replace
N3101
SL 5 Replace
N2000 or N2010
Replace
L2406
No
More than
300mV AC Pk-Pk
1 kHz signal at MP 97
(L2403) and
MP 99 (L2404)
Replace
X2405
Yes
Is
MP 96 (X2405_Pin 5)
or MP 98 (X2405_Pin 6)
Short Circuit to
GND
Yes
SL 4 Replace
N3101
SL 5 Replace
C2447 or C2448
Yes
No
Yes
Hands-Free (PHF) Aux Earphone Problems
START
Load ETS SW into the Phone
Use the TRS Fixture
Connect: VBATT and DCIO/SEPI
Insert the Hands-Free (PHF) Set with 3.5mm Stereo Plug
into the TRS Fixture 3.5mm Audio Jack
Use Fault Trace SW
Continue with the
Audio Jack Detection Problems TRS guide
1:
Use Fault Trace SW and go to:
General
Selftest
Run:
Audio Jack Detection
No
Is the
Audio Jack Detection
test result
0x1
Replace
Audio Jack
Yes
Disconnect VBATT and DCIO/SEPI
Remove PBA from the TRS Fixture
Is MP 50
(V3103_Cathode)
Short Circuit
to GND
SL 4 Replace
V3103
SL 5 Replace
N2010
Yes
Is L3104
= Max 2 Ohm
No
Replace
L3104
No
SL 5 Replace
R3115 or N2010
SL 4 Escalate
Yes
Audio Jack Detection Problems
SEMC Troubleshooting Manual
25
(125)
