Trouble Shooting Guide, Mechanical
4/00021-1/FEA 209 544/89 A
Company Internal
Sony Ericsson Mobile Communications AB
14(26)
7 Key/Flip
•
Make a general visual inspection for misuse, corrosion or oxidation from liquid damage
according to point 1.2
7.1 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 button LCD top, side, base and centre (Fig. 7.1) or the button key (Fig. 7.2) is
mechanical damaged or dirty. Replace the faulty necessary.
•
Check if the key flex sheet (Fig. 7.3) or the LCD flex sheet (Fig.7.4) is mechanical
damaged, dirty or oxidized. Replace the faulty component if necessary.
•
Check if the key FPC (Fig. 7.5) or the FPC hinge (Fig.7.6) is mechanical damaged, dirty
or oxidized. Replace the faulty component if necessary.
•
Check if the keyboard flex-film is fitting correct into the FPC connector (Fig. 7.7)
and
check if the FPC connector is closed.
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. 7.1
Fig. 7.2
