On/Off Problems - Sony Ericsson K750 Troubleshooting Manual, Mechanical

Problem Area Items to Check
Visually inspect antenna
If the issue has not been resolved !

4 On/Off Problems

Problem Area Items to Check
Check whether the phone vibrates 10 to 15
Power On problems
seconds after pressing the power key and
whether the keypad illuminates
Before proceeding !
4/000 21-1/FEA 209 544/94 C
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Sony Ericsson Mobile Communications AB
Repair Action
•
If dirty or oxidized – Replace it.
•
If damaged – Replace it.
•
Handle the unit according to local
directives.
Repair Action
•
If activation of the vibrator and keypad are
detected, refer to the "Display Problems"
section
•
Perform a flash upgrade.
Trouble Shooting Guide, Mechanical
Reference Image
Reference Image
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