Programming: Software Upgrade And Flexing - Motorola C257 Service Manual

Level 1-2 Service Manual
Table 4: Level 1 and 2 Troubleshooting Chart (Continue)
Symptom
7. Phone will not recognize or accept
SIM card.
8. Keypad not functioning.
9. Vibrator feature not functioning.
10. No or weak audio when using
headset.
11. Camera module not functioning. (for
C261)

Programming: Software Upgrade and Flexing

Probable Cause
SIM card defective.
Keypad defective.
a) Vibrator faulty.
b) Vibrator defective.
a) Headset plug not fully pushed.
b) Headset defective.
Camera module defective.
Contact your local technical support engineer for information about equipment and procedures
for flashing and flexing.
July 1, 2005
Verification and Remedy
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.
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.
Check general condition of vibrator. If it is
good, proceed to b.
Replace the defective vibrator.
Ensure the headset plug is fully seated in
thejack. If the seated is OK, proceed to b.
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.
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.
Troubleshooting
31