W995
1230-1858 rev. 1
TROUBLESHOOTING
Loudspeaker Problems
T
R
O
UBL
ESHOOT
ING
START
Load ETS SW into the Phone
Use the TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Continue with the
Earphone Problems TRS guide
1:
Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Loudspeaker Left
Can you
hear a 1 kHz tone
from the TRS Fixture
Left Loudspeaker
Replace
BT GPS Antenna
Yes
No
2V AC Pk-Pk
1 kHz signal at
MP 36 (V3101_Pin C1)
and MP 37
(V3101_Pin C2)
SL 5 Replace
L3112 or L3113
SL 4 Escalate
No
Is any of
MP 91 (TP3110) and
MP 90 (TP3111)
(Red
Probe)
Short Circuit to
GND (Black
Probe)
Yes
SL 4 Replace
V3101 or N3100
SL 5 Replace
C3107 or C3108
No
1.8 Volt DC
at MP 3 (R3153)
Replace
N2410
Yes
More than
400mV AC Pk-Pk
1 kHz signal at
MP 34 (C3137)
Replace
N3100
Yes
SL 5 Replace
N2000 or N2010
SL 4 Escalate
No
Yes
No
Loudspeaker Left Problems
START
Load ETS SW into the Phone
Use the TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Continue with the
Earphone Problems TRS guide
1:
Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Loudspeaker Right
Can you
hear a 1 kHz tone
from the TRS Fixture
Right Loudspeaker
Replace
Main Antenna
Yes
No
2V AC Pk-Pk
1 kHz signal at
MP 4 (V3102_Pin C1) and
MP 5 (V3102_Pin C2)
Replace
L3116 or L3117
No
Is
any of
MP 118 (TP3107) and
MP 119 (TP3108)
(Red
Probe)
Short Circuit to
GND (Black
Probe)
Yes
No
1.8 Volt DC
at MP 3 (R3153)
Yes
More than
400mV AC Pk-Pk
1 kHz signal at MP 7
(C3148)
Replace
N3102
Yes
SL 5 Replace
N2000 or N2010
SL 4 Escalate
No
Replace
V3102 or N3102
Replace
N2410
No
Yes
Loudspeaker Right Problems
SEMC Troubleshooting Manual
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