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11.3 Repair Document
Description of procedure
Diagnosis
Visual check and measure with multimeter to detect if pins are cold,
soldering, oxidized or deformed.
Repair by component change
1. Re-solder this connector if cold or insufficient soldering.
2. Heat and remove the defective earpiece by Soldering Iron (350°C ± 20 °C) from
the topside.
3. Put on a new earpiece.
4. Heat and press the earpiece to the right position gently.
Avoid excessive heat! Watch surrounding component!
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 Earpiece
Part Number: L36104-F3090-X907
Jigs and Tools
Hot Air Blower (350°C ~ 400 °C)
Soldering Iron (350°C ± 20 °C)
Special Tools:
Multimeter
Working materials
Desolder Wick / Braid
Solder
V 1.1
ST55
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