C905
1222-9526 rev. 1
TROUBLESHOOTING
Primary & Secondary Mic Problems
TROU
B
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E
S
H
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OTIN
G
- Ear Speaker Problems
START
Step 1:
If Primary Mic problem
Replace PBA Key Flex Flip or Slider FPC Assy
and retest the Phone
If successful claim PBA Key Flex Flip or Slider FPC Assy
If not go to step 3.
Step 2:
If Secondary Mic problems replace Flash Complete and
retest the phone
If successful claim Flash Complete
If not go to step 3.
Step 3:
Continue with the
Primary and Secondary Mic Problems TRS guide
Is the
problem with
Primary Mic
Yes
Is the
problem with
both Primary and
Secondary
Mic
SL 5 Replace
N2000
SL 4 Escalate
No
Replace
X4200
Yes
Replace
X4400
No
Primary and Secondary Mic Problems
START
Step 1:
Replace Ear Speaker
and retest the Phone
If successful claim Ear Speaker
If not then go to step 2.
Step 2:
Replace PBA Key Flex Flip
If successful claim PBA Key Flex Flip
If not then go to step 3.
Step 3:
Replace Slider FPC Assy
If successful claim Slider FPC Assy
If not then go to step 4.
Step 4:
Load ITP SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Use Hands-Free (PHF) and
continue with the
Ear Speaker Problems TRS guide
1:
Fault Trace SW
Audio and FM Radio
Audio Loop Test
Audio Input: AUX1
Loop Mode: Analog
Audio Output:
Ear Speaker
Apply Audio Loop
2:
Remove the DCIO/SEPI Cable from the PBA
and Insert the Hands-Free (PHF) set to the PBA
2.6 Volt DC
at MP 125 (ST2201)
and MP 124 (ST2206)
SL 5 Replace
N2000
SL 4 Escalate
No
More than
40 mV AC Pk-Pk
at MP 58 (C3159_Side A) and
MP 57 (C3159_Side B)
when blowing into
PHF mic
Yes
Replace
X4200
Yes
No
Ear Speaker Problems
SEMC Troubleshooting Manual
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