C905
1222-9526 rev. 1
TROUBLESHOOTING
Camera Play and Mode Button
TROU
B
L
E
S
H
O
OTIN
G
- Numeric Keypad LED Problems
START
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Is there
a problem with
S2424 Camera Play
Button
Go to Volume
Up and Down Button
Problems TRS guide
1.8 Volt DC at
MP 82 (S2415_Pin A)
and MP 84
(S2415_Pin B)
No
SL 5 Replace
N2010
SL 4 Escalate
Press the
S2415 Camera Mode (REC)
Button
Yes
0 Volt DC at
MP 82 (S2415_Pin A)
and MP 84
(S2415_Pin B)
Replace
S2415
No
Yes
No
1.8 Volt DC at
MP 88 (S2424_Pin A)
and MP 90
(S2424_Pin B)
Yes
Press the
S2424 Camera Play
Button
Yes
0 Volt DC at
MP 88 (S2424_Pin A)
and MP 90
(S2424_Pin B)
Replace
S2424
No
SL 5 Replace
N2010
SL 4 Escalate
Yes
1.8 Volt DC at
MP 96 (S2453_Pin A)
and MP 94
(S2454_Pin A)
Yes
No
Is the
MP 82
(S2415_Pin A)
and MP 84 (S2415_Pin B)
Short circuit to GND
(Shield Can
Fence)
No
SL 5 Replace
N2010
SL 4 Escalate
Remove the
S2415 Camera Mode (REC)
Button
Yes
Is the
MP 82
(S2415_Pin A)
and MP 84 (S2415_Pin B)
still Short circuit to GND
(Shield Can
Fence)
SL 5 Replace
V2475 or V2471
SL 4 Escalate
Yes
Replace
S2415
No
No
SL 5 Replace
V2482
SL 4 Escalate
Camera Play and Mode (REC) Button Problems
3.8 Volt DC
at MP 160 (C2473)
SL 5 Replace
N2000
SL 4 Escalate
No
Replace
X2410
Yes
Connect: VBATT and DCIO/SEPI
Restart the Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Keypad LED
START
Load ITP SW into the Phone
Use TRS Fixture
Connect: Numeric Key Foil to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Led and Backlight
Activate:
Keypad LED
If Keypad LED is working on the TRS Fixture
then Replace Numeric Key Foil
If not then continue with the
Numeric Keypad LED Problems TRS guide
Disconnect:
VBATT and DCIO/SEPI
Disconnect:
Numeric Key Foil
Max 1 Ohm
between MP 74
(R4401) and MP 72
(C4401)
SL 5 Replace
L4400
SL 4 Escalate
No
Yes
5 Volt DC at
MP 56 (TP4400)
No
Replace
N4400
Yes
Fault Trace SW
Deactivate:
Keypad LED
Numeric Keypad LED Problems
SEMC Troubleshooting Manual
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(124)