Keyboard - Sony Ericsson K500 Series Troubleshooting Manual

7.2

Keyboard

•
Turn on the phone. Go to the service test menu; choose "Keyboard". Press all the keys.
The pressed key will be indicated in the LCD and a DTMF tone is heard.
•
Check if the mechanically response feels normal and that all the keys have been showed in
the LCD.
•
Check if the dome switch foil (Fig. 7.7) is mechanical damaged, dirty or oxidized. Replace
it if necessary.
•
Check if the keyboard flex-film is fitting correct into the FPC connector (Fig. 7.8) and
check if the FPC connector is closed.
Note: It is important to place the zif tape correct after checking the zif connectors.
•
Check if the keyboard (Fig. 7.9) is mechanical damaged or dirty. Replace it if necessary.
If the fault still occurs, try to update the phone to the latest available software version. If this
doesn't solve the problem, handle the unit according to the local directives.
Fig. 7.7
4/00021-1/FEA 209 544/86 D
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Company Internal Sony Ericsson Mobile Communications AB
Trouble Shooting Guide, SP/Mechanical
Fig. 7.8 Fig. 7.9
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