Troubleshooting Guide (mech)
1262-4100 Rev 2
Sony Mobile Communications AB
– Company Internal
4(41)
1
Problem Areas
1.1 Power
1.1.1 Will not power on or will switch
off randomly
Check:
Check whether the phone vibrates after the on/off key is
depressed.
Action:
If activation of the Vibrator is detected, refer to section 1.4
‘Display’.
Check:
Check the contact pads on the battery.
Action:
1. If dirty or oxidized
– clean the pads.
2. If damaged
– replace the battery.
Check:
Check the Battery contact pins.
Action:
1. If dirty or oxidized
– clean the contact pins.
2. If adhesive is detected on the contact pins, use an eraser
to gently rub off the adhesive.
3. If damaged
– Replace PBA.
Check:
Inspect the on/off key (a) and the on/off switch (b) on the
Main PBA.
Action
1. If the on/off key (a) or the on/off switch (b) is dirty or
clogged
– clean them.
