Trouble Shooting Guide, Mechanical
4/00021-1/FEA 209 544/89 A
Company Internal
Sony Ericsson Mobile Communications AB
15(26)
Fig. 7.3
Fig. 7.4
Fig. 7.5
Fig. 7.6
Fig. 7.7
7.2 Side
keys
•
Turn on the phone. Go to the service test menu; choose “Keyboard”. Press all the side
keys. The pressed key will be indicated in the LCD and a DTMF tone is heard.
•
Check if the Button lock switch (Fig. 7.8) and the button shutter (Fig.7.9) is working
properly and if the mechanical response feels normal. Replace the faulty component if
necessary.
•
Check if the key flex sheet (Fig. 7.10) is mechanical damaged, dirty or oxidized. Replace
it if necessary.
•
Check if the key FPC (Fig. 7.11) is mechanical damaged, dirty or oxidized. Replace it if
necessary.
•
Check if the FPC Connectors (Fig. 7.12) are closed properly and if the flex films are
mounted right in the FPC connectors.
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.
