Camera Play And Mode Button Problems; Numeric Keypad Led Problems - Sony Ericsson Cyber-Shot C905 Troubleshooting Manual

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Camera Play and Mode (REC) Button Problems
START
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
0 Volt DC at
SL 5 Replace
MP 82 (S2415_Pin A)
N2010
Yes
and MP 84
SL 4 Escalate
(S2415_Pin B)
Replace
No
S2415
Is the
MP 82
SL 5 Replace
(S2415_Pin A)
N2010
and MP 84 (S2415_Pin B)
No
Short circuit to GND
SL 4 Escalate
(Shield Can
Fence)
Yes
Remove the
S2415 Camera Mode (REC)
Button
Is the
MP 82
SL 5 Replace
(S2415_Pin A)
V2475 or V2471
and MP 84 (S2415_Pin B)
Yes
SL 4 Escalate
still Short circuit to GND
(Shield Can
Fence)
0 Volt DC at
Replace
MP 88 (S2424_Pin A)
No
S2424
and MP 90
(S2424_Pin B)
SL 5 Replace
N2010
Yes
SL 4 Escalate
TROUBLESHOOTING
1.8 Volt DC at
Go to Volume
MP 96 (S2453_Pin A)
Up and Down Button
No
and MP 94
Problems TRS guide
(S2454_Pin A)
Press the
S2415 Camera Mode (REC)
Button
Yes
Yes
Is there
1.8 Volt DC at
MP 82 (S2415_Pin A)
a problem with
No
No
and MP 84
S2424 Camera Play
(S2415_Pin B)
Button
Yes
Replace
No
S2415
1.8 Volt DC at
Press the
MP 88 (S2424_Pin A)
S2424 Camera Play
Yes
and MP 90
Button
(S2424_Pin B)
SL 5 Replace
V2482
No
SL 4 Escalate
Camera Play and Mode Button - Numeric Keypad LED Problems

Numeric Keypad LED Problems

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:
Init Screen Testing
Led and Backlight
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
VBATT and DCIO/SEPI
Numeric Key Foil
between MP 74
(R4401) and MP 72
Connect: VBATT and DCIO/SEPI
Restart the Fault Trace SW and go to:
Init Screen Testing
Led and Backlight
MP 56 (TP4400)
Fault Trace SW
Replace
Yes
X2410
at MP 160 (C2473)
SEMC Troubleshooting Manual
START
MMI
Misc
Activate:
Keypad LED
Disconnect:
Disconnect:
Max 1 Ohm
SL 5 Replace
L4400
No
SL 4 Escalate
(C4401)
Yes
MMI
Misc
Activate:
Keypad LED
5 Volt DC at
Replace
No
N4400
Yes
Deactivate:
Keypad LED
SL 5 Replace
3.8 Volt DC
N2000
No
SL 4 Escalate
1222-9526 rev. 1
C905
14
(124)

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