W995
1230-1858 rev. 1
TROUBLESHOOTING
Operation LED Problems
T
R
O
UBL
ESHOOT
ING
- Camera Button LED Problems
START
Load ETS SW into the Phone
Use the TRS Fixture and Connect:
Key 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:
Operation LED
If Operation LED is working on the TRS Fixture then Replace
Key Flex Assy
If not then continue with the
Operation LED Problems TRS guide
1:
Disconnect: VBATT and DCIO/SEPI
2:
Disconnect and Remove the Key Flex Assy from
the PBA
3:
Connect VBATT and DCIO/SEPI
3.8 Volt DC at
MP 54 (C4224)
Replace
X2410
Yes
SL 5 Replace
N2000
SL 4 Escalate
No
Is the
MP 53 (V2479_Pin C1)
Short Circuit
to the GND
No
SL 5 Replace
V2479
SL 4 Escalate
Yes
Operation LED Problems
START
Load ETS SW into the Phone
Use the TRS Fixture and Connect:
Key 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:
Camera Button LED
If Camera Button LED is working on the TRS Fixture then Replace Key Flex Assy
If not then continue with the
Camera Button LED Problems TRS guide
1:
Disconnect: VBATT and DCIO/SEPI
2:
Disconnect and Remove the Key Flex Assy from
the PBA
3:
Connect VBATT and DCIO/SEPI
3.8 Volt DC at
MP 56 (C4222)
Replace
X2410
Yes
SL 5 Replace
N2000
SL 4 Escalate
No
Is MP 55
(V2479_Pin C2)
Short Circuit
to GND
No
SL 5 Replace
V2479
SL 4 Escalate
Yes
Camera Button LED Problems
SEMC Troubleshooting Manual
15
(125)