Lcd/Illumination Problems; Lcd; Illumination - Sony Ericsson K500 Series Troubleshooting Manual

8 LCD/Illumination Problems

•
Make a general visual inspection for misuse, corrosion or oxidation from liquid damage
according to point 1.2
8.1

LCD

•
Turn on the phone. Go to service test menu; choose "Display". You should see a colour
pattern.
•
Check if the display assy works properly and if there are missing lines or discolours.
Replace it if necessary.
•
Check if the LCD flex-film is fitting correct into the FPC connector (Fig. 8.1) and check if
the FPC connector is closed.
Note: It is important to place the zif tape correct after checking the zif 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.
8.2

Illumination

•
Turn on the phone. Go to service test menu; choose "LED/Illumination". The illumination
should start blinking ~1Hz.
•
Check if the display assy is lighting up properly. Replace it if necessary.
•
Check if the keyboard flex-film is fitting correct into the FPC connector (Fig. 8.2) and
check if the FPC connector is closed.
Note: It is important to place the zif tape correct after checking the zif 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.
4/00021-1/FEA 209 544/86 D
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Company Internal Sony Ericsson Mobile Communications AB
Fig. 8.1
Trouble Shooting Guide, SP/Mechanical
Fig. 8.2
15(20)