Service manual

Level 1-2 Service Manual Troubleshooting
July 1, 2005 31
Programming: Software Upgrade and Flexing
Contact your local technical support engineer for information about equipment and procedures
for flashing and flexing.
7. Phone will not recognize or accept
SIM card.
SIM card defective. Check the SIM card contacts for dirt. Clean if
necessary, and check if fault has been
cleared. If the contacts are clean, insert a
known good SIM card into the phone. Power
up the phone and confirm that the card has
been accepted. If the fault no longer exists,
replace the defective SIM card.
8. Keypad not functioning. Keypad defective. Use alcohol to wipe the keypad metal dome.
Check if fault has been cleared. If the fault is
still present, either replace the keypad or
refer to a Level 3 Service Center for the
keypad metal dome replacement.
9. Vibrator feature not functioning. a) Vibrator faulty. Check general condition of vibrator. If it is
good, proceed to b.
b) Vibrator defective. Replace the defective vibrator.
10. No or weak audio when using
headset.
a) Headset plug not fully pushed. Ensure the headset plug is fully seated in
thejack. If the seated is OK, proceed to b.
b) Headset defective. Temporarily replace the headset with a
known good headset. Ensure good seated.
Place a call and verify improvement in
headset audio. If fault is cleared, replace the
defective headset.
11. Camera module not functioning. (for
C261)
Camera module defective. Replace the camera module as described in
the procedures. Verify that the fault has been
cleared and reassemble the phone with the
new camera module.
Table 4: Level 1 and 2 Troubleshooting Chart (Continue)
Symptom Probable Cause Verification and Remedy