W995
1230-1858 rev. 1
TROUBLESHOOTING
Flash LED Problems
T
R
O
UBL
ESHOOT
ING
START
Step 1:
Go to Service Test and perform the Main Camera Test
If successful go to Step 2, if not then go to:
Main Camera Problems TRS guide.
Step 2:
Replace Camera 8 MPixel CMOS
If successful claim Camera 8 MPixel CMOS
if not go to Step 3.
Step 3:
Replace SIM Flex Assy
If successful claim SIM Flex Assy
if not go to Step 4.
Step 4:
Load ETS SW into the Phone
Use the TRS Fixture
Connect the Camera 8 Mpixel CMOS and SIM Flex Assy to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Flash LED
Is the
Flash LED
Ok
Go to Flash LED
Problems in
Torch Mode
No
1:
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Deactivate:
Flash LED
2:
Use Fault Trace SW and go to Misc and
Activate:
Main Camera
Yes
1.8 Volt DC at
MP 85 (C2273)
SL 5 Replace
N2215 or N2010
SL 4 Escalate
No
Replace
X4301 or N4401
Yes
Flash LED Problems in Camera Mode
START
Load ETS SW into the Phone
Use the TRS Fixture
Connect:
SIM Flex Assy to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Display Pattern
Activate:
Flash LED
If the Flash LED is working on the TRS Fixture then
Replace SIM Flex Assy
If not then continue with the Flash LED Problems in Torch Mode TRS guide
5 V – 5.5 V DC at
MP 89 (L4406)
Replace
X2401
Yes
3.8 Volt DC at
MP 82 (L4408)
No
SL 5 Replace
L4408
SL 4 Escalate
No
SL 4 Replace
N4401
SL 5 Replace
N2010
Yes
1:
Disconnect: VBATT and DCIO/SEPI
2:
Disconnect and Remove the
SIM Flex Assy from the PBA
3:
Connect VBATT and DCIO/SEPI
4:
Use Fault Trace SW and
Activate
:
Flash LED
1:
Use Fault Trace SW and
Deactivate
:
Flash LED
2:
Disconnect: VBATT and DCIO/SEPI
Is L4400 = Max 1 Ohm
Replace
X2401
No
Yes
Flash LED Problems in Torch Mode
SEMC Troubleshooting Manual
17
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