Troubleshooting Guide (mech)
1261-4721 Rev 3
Sony Mobile Communications AB
– Company Internal
4(62)
1
Problem Areas
1.1 Power
1.1.1 Will not power on or will switch
off randomly
Check:
Check whether the phone vibrates by pressing the key
on/off.
Action:
1. If activation of the Vibrator is detected, refer to section 1.4
„Display‟.
2. If NO activation of the Vibrator is detected, check that the
battery is charging when connected to a charger.
Follow Test Instruction (Charging via USB), Diagnostic
Battery / Charging status.
Check:
Inspect the Key On/Off.
Action:
1. If dirty
– clean it.
2. If damaged
– replace it.
Check:
Inspect the BtB connector of battery to the PBA.
Action:
1. If not properly connected
– disconnect and reconnect.
2. If dirty or oxidized
– clean the both sides of the BtB
connector.
3. Check current draw in off mode by using “Dummy Battery”
(max 1 mA).
