Siemens SL10 Repair Documentation page 19

Information and Communication Products
5.2.2 Fault Symptom on GSM-Tester:
5.3 Priority:

........ Mandatory

........ Repair

........ Optional

........ Not Yet Defined
5.4 Repair Documentation
5.4.1 Description of procedure:
5.4.1.1 Diagnosis
5.4.1.2 Repair by component change
V1.3
Communication Devices
Slider keypad does not work properly.
Display problems.
Display or keyboard illumination problems.
Handset fails the keyboard, display or illumination test.
The connection between the main board and the upper MMI is made
through the connector X2 and a flexible cable. The signals of these
connection are:
1) Display signals.
2) Earphone (loudspeaker) signals.
3) Display / Keyboard illumination signals.
Visually check the connector. Watch for dry joints.
Visually check the flexible cable coming from the upper MMI. Watch
for dry joints on the MMI.
Resolder dry soldering joints.
If the connector or flexible cable is physically damaged use hot air
blower or wick to remove defective connector / cable.
Page 19 of 31 ICP CD ST
D. Schnoor
08/98