W995
1230-1858 rev. 1
TROUBLESHOOTING
Handsfree (PHF) Problems
T
R
O
UBL
ESHOOT
ING
START
Power On the Phone
Use Hands-Free (PHF) Set
Continue with the
Hands-Free (PHF) Connection Problems TRS guide
Yes
No
Yes
No
Can You
see the PHF icon
in the Phone Display
when the PHF set is
NOT
attached
Is MP 101
(V2417_Cathode)
Short Circuit to
GND
Replace
V2417
Yes
Replace
N2422
Use TRS Fixture
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
Use TRS Fixture
No
Is MP 100
(X2405_Pin 8)
connected to
MP 101
(V2417_Cathode)
SL 4 Replace
N2422
SL 5 Replace
R2439, R2434 or
N2010
Is R2448 = Max 1 Ohm
Replace
R2448
No
Replace
X2405
Yes
No
Hands-Free (PHF) Connection Problems
START
Note !
Before starting this guide check that
the Hands-Free (PHF) Connection is Ok.
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 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
Right 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 28 (C3158)
Is
MP 28 (C3158)
Short Circuit
to GND
No
SL 4 Replace
N3101
SL 5 Replace
C3158 or N2000
Yes
SL 5 Replace
R3156 or N2000
SL 4 Escalate
No
Disconnect VBATT and PHF Set and
Remove PBA from the TRS Fixture
Yes
Is
MP 94 (X2405_Pin 3)
and MP 95 (X2405_Pin
4) Short Circuit
to GND
SL 4 Replace
N3101
SL 5 Replace
C2442 or C2443
Yes
No
Replace
L2401 or L2402
No
Replace
N3101 or X2405
Yes
Hands-Free (PHF) Aux Microphone Problems
SEMC Troubleshooting Manual
24
(125)
