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13.3 Repair Document
Description of procedure
Diagnosis
Visual check and measure with multimeter if pins are cold, insufficient soldering,
oxidized or deformed.
Repair by component change
1.Re-solder this connector if cold or insufficient soldering.
2. Use hot blower to remove the defective connector.
Avoid excessive heat! Watch surrounding components!
3. Add solder.
4. Heat and put on a new connector to enhance adhesion.
5. Re-solder if needed.
Repair by SW-Booting
Not possible!
Test
Retest handset by '*#369#' after repair procedure as described above
List of needed material
Components
ST55 Keypad Connector
Part Number: L36334-Z97-C328
Jigs and Tools
Hot Air Blower (350°C ~ 400 °C)
Soldering Iron (350°C ± 20 °C)
Special Tools:
Multimeter
Working materials
Solder
V 1.1
ST55
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