C905
1222-9526 rev. 1
TROUBLESHOOTING
SIM Problems
TROU
B
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OTIN
G
- Memory Stick Problems
START
Step 1:
Load ITP SW into the Phone
Step 2:
Insert Test SIM
Connect:
Dummy Battery connected to
Power Supply Channel 1 (VBATT)
and DCIO/SEPI
Use Fault Trace SW
No
Is the
Sim Com Test
Passed
1.8 Volt DC at
MP 155 (X2402_Pin 1)
Yes
Yes
Yes
Remove Test SIM
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
Logic
SIM Card control
Activate:
SIMVCC
SIMVCC On
Activate:
SIMCONRST
Yes
SIMVCC On
SIMCONRST On
Activate:
SIMCONCLK
0.9V-1V DC at
MP 151 (X2402_Pin 3)
Yes
SIMVCC On
SIMCONRST On
SIMCONCLK On
Activate:
SIMCONDAT
1.8 Volt DC at
MP 105 (ST2411)
Is
MP 154 (X2402_Pin 5)
Connected to
PBA GND
No
Yes
SL 5 Replace
R2416
SL 4 Escalate
No
Fault Trace SW
Logic
SIM Card control
Activate:
SIM Com Test
Is any of
C2414 or C2420
Short circuit
No
SL 5 Replace
C2414 or C2420
SL 4 Escalate
Yes
8 Kohm
between
MP 155 (X2402_Pin 1)
(
Red Probe
) and
MP 150 (X2402_Pin 7)
(Black Probe)
No
1.8 Volt DC at
MP 156 (C2420)
No
Replace
X2402
Yes
1.8 Volt DC at
MP 153 (X2402_Pin 2)
No
Replace
X2402
No
Yes
SL 5 Replace
N2000
SL 4 Escalate
1.8 Volt DC
at MP 152 (C2419)
Yes
No
1MHz and
1.8 Volt Pk-Pk at
MP 107 (ST2410)
Flash the Phone with
EMMA SUCR SW
Is C2419
Short circuit
SL 5 Replace
C2419
SL 4 Escalate
Yes
SL 5 Replace
N2000
SL 4 Escalate
No
Yes
1MHz and
1.8V-2.2V Pk-Pk at
MP 34 (SP2410)
No
SL 5 Replace
N2010
SL 4 Escalate
No
Replace
X2402
1.8 Volt DC at
MP 106 (C2413)
No
SL 5 Replace
N2000
SL 4 Escalate
Yes
Disconnect:
VBATT and DCIO/SEPI
Yes
SL 4 Replace
X2402
SL 5 Replace
N2000 or N2010
SL 5 Replace
N2000 or N2010
SL 4 Escalate
No
SIM Problems
Is X2401
damaged
SL 5 Replace
X2401
SL 4 Escalate
Yes
Load ITP SW into the Phone
Insert Memory M2 Card
Use TRS Fixture
Connect:
VBATT and DCIO/SEPI
Use Fault Trace SW
No
Fault trace SW
Logic
SIM Card control
Activate:
Memory Stick Test
Is this a
C905c phone
Yes
No
Replace
X2401
Is the
Memory Stick Test
Passed
Flash the Phone with
EMMA SUCR SW
Yes
0 Volt DC at
MP35 (R2422
MSDETECT)
No
Is this a
C905c phone
No
Replace
X2401
Yes
SL 5 Replace
X2401
SL 4 Escalate
No
1.8 Volt DC at
MP 162 (ST2200
VMC18)
SL 5 Replace
N2000
SL 4 Escalate
No
SL 5 Replace
X2401 or N2010
SL 4 Escalate
Yes
Is this a
C905c phone
Yes
SL 4 Replace
X2401
SL 5 Replace
N2010
Yes
No
START
NOTE !
SL 4 may only Repair X2401 on the
C905c
Phones
If there is a problem with X2401
on
C905
or
C905a
Phones
SL 4 Escalate to SL 5
Memory Stick Problems
SEMC Troubleshooting Manual
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