C903
1228-1147 rev. 1
TROUBLESHOOTING
VGA/VTF Camera Problems
T
R
O
UBL
ESHOOT
ING
- Data Communication Problems
START
NOTE !
This TRS guide is valid
ONLY
for C903 phones with VGA/VTF Camera support.
Step 1:
Flash the Phone with EMMA SUCR SW and go to Service Tests Menu
Perform the: Main and VGA/VTF Camera Tests
If the Tests are successful then claim SW Flash
if not go to step 2.
Step 2:
Replace the Main Flex Assy and retest the Phone
If successfull claim Main Flex Assy
If not go to step 3.
Step 3:
Replace the Navigation PBA Assy and retest the Phone
If successfull claim Navigation PBA Assy
If not then continue with the VGA/VTF Camera Problems TRS guide
Is the
Main Camera
Ok
Go to
Main Camera
Problems TRS guide
No
SL 4 Replace
X4202
SL 5 Replace
N4300, N4301, N4302
N4303, N4304 or
N4305
Yes
Is the
VGA/VTF Camera
Problem Solved
Claim Component
Faulty Component
Yes
SL 5 Replace
N2010
SL 4 Escalate
No
VGA/VTF Camera Problems
START
Step 1:
Perform
System Connector Protection Test
If successful go to step 2.
Step 2:
Dowload ETS SW into the Phone
Go to
USB/VBUS
Charging Problems
Is
the USB
Charging
Ok
Yes
No
Is the
Flash process
Start-up when using
EMMA SW
No
Yes
Is the
ETS SW Flash
Successful
Yes
SL 5 Replace
N2020
SL 4 Escalate
No
Use TRS Fixture
1:
Connect: VBATT and DCIO/SEPI
2:
Remove: DCIO/SEPI
3:
Connect: USB Cable from the PC
2.7V – 3.3V DC
at MP 68 (C2437) and
1.8V DC at
MP 76 (C2435)
Yes
Is
MP 14 (X2405_Pin 10)
Short circuit to GND
Yes
Replace
V2421
Is
MP 15 (X2405_Pin 11)
Short circuit to the
GND
No
Replace
V2420
Yes
5 Volt DC at
MP 75 (C2433)
No
SL 5 Replace
R2442
SL 4 Escalate
No
Yes
SL 4 Replace
N2420
SL 5 Replace
N2010
No
Remove the PBA from the
TRS Fixture
Max
2 Ohm between
MP 14 (X2405_Pin 10)
and MP 65
(Z2400_Pin 2)
Max
0.5 Ohm between
MP 14 (X2405_Pin 10)
and MP 63
(Z2400_Pin 1)
No
SL 5 Replace
X2405
SL 4 Escalate
No
Replace
Z2400
Yes
Max
2 Ohm between
MP 15 (X2405_Pin 11)
and MP 66
(Z2400_Pin 3)
Max
0.5 Ohm between
MP 15 (X2405_Pin 11=
and MP 64
(Z2400_Pin 4)
Yes
No
SL 5 Replace
X2405
SL 4 Escalate
No
Replace
Z2400
Yes
SL 4 Replace
N2420
SL 5 Replace
N2010
Yes
Data communication Problems
SEMC Troubleshooting Manual
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