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Keylock Switch Problems
START
Step 1:
Load ETS SW into the Phone
Use TRS Fixture
Connect: VBATT and DCIO/SEPI
Step 2:
Use Fault Trace SW and go to:
MMI
Misc
Init Screen Testing
Activate:
Key Test
Press the Keylock Switch (S2401) on the PBA
Is the
Keylock Switch
(S2401)
Ok
No
1.8 Volt DC at
MP 9 (ST2412)
No
SL 4 Replace
Is any
S2401
of MP 31 (S2401_Pin A)
No
SL 5 Replace
or MP 32 (S2401_Pin B)
Short circuit to
N2010
GND
TROUBLESHOOTING
Replace
Rear Cover
Yes
Assembly or Rear
Cover Assembly
Recessed
Replace
Yes
S2401
SL 4 Replace
S2401
Yes
SL 5 Replace
C2477 or N2010
Keylock Switch Problems - Volume Up and Down Problems
Volume Up and Down Problems
Load ETS SW into the Phone
Connect: Keyboard FPC Assembly to the PBA
Connect: VBATT and DCIO/SEPI
Use Fault Trace SW and go to:
Press the Volume Up and Down keys on the
Keyboard FPC Assembly
Go to
Navigation Keys
No
Problems
SEMC Troubleshooting Manual
START
Step 1:
Use TRS Fixture
Step 2:
MMI
Misc
Init Screen Testing
Activate:
Key Test
Is the
Replace
Volume Up and Down
Yes
Keyboard FPC
Ok
Assembly
1235-5821 rev. 1
Aino - U10
11
(57)
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Table of Contents
Troubleshooting
