C903
1228-1147 rev. 1
TROUBLESHOOTING
Handsfree Aux Microphone Problems
T
R
O
UBL
ESHOOT
ING
START
Step 1:
Perform the
System Connector Protection Test
If successful go to step 2.
Step 2:
Power On the Phone
Use Hands-Free (PHF) Set
Continue with the
Hands-Free (PHF) Connection Problems TRS guide
Yes
No
Can You
see the PHF icon
in the Phone Display
when the PHF set is
NOT
attached
Replace
N2422
Connect:
Hands-Free (PHF) Set
to the Phone
Can You
see the PHF
icon in the Phone
Display
Flash the Phone with
EMMA SUCR SW
Yes
No
SL 4 Replace
N2422
SL 5 Replace
X2405 or N2010
Hands-Free (PHF) Connection Problems
START
Note !
Before starting check if the Hands-Free (PHF) Connection is Ok.
Step 1:
Perform the
System Connector Protection Test
If successful go to step 2.
Step 2:
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW
Use Hands-Free (PHF) Set
Continue with the
Hands-Free (PHF) Aux Microphone Problems TRS guide
1:
Use Fault Trace SW and go to:
Audio and FM Radio
Audio Loop Test
Audio Input:
AUX1
Loop Mode:
Analog
Audio Output:
Loudspeaker
Apply Audio Loop
2:
Disconnect: DCIO/SEPI from the PBA
3:
Connect the PHF set to the PBA
Can you
hear any sound
from the TRS Fixture
Loudspeaker when
blowing into the
PHF Mic
Go to
Hands-Free (PHF)
Aux Earphone
Problems TRS guide
Yes
No
Are
L2401 and L2402
= Max 2 Ohm
2V - 2.2V DC
at MP 69 (C3158)
Is
MP 69 (C3158)
Short Circuit
to the GND
No
SL 4 Replace
N3101
SL 5 Replace
C3158 or N2000
Yes
SL 5 Replace
R3156 or N2000
SL 4 Escalate
No
Yes
SL 4 Replace
N3101
SL 5 Replace
X2405, C2462 or
C2463
Yes
Replace
L2401 or L2402
No
Disconnect:
VBATT and Hands-Free (PHF) Set
Remove the PBA from the TRS Fixture
Hands-Free (PHF) Aux Microphone Problems
- Connection Problems
SEMC Troubleshooting Manual
26
(129)