9.4.1 Description of procedure:
220.127.116.11 Repair by component change
18.104.22.168 Repair by SW-Booting
9.4.2 List of needed material
22.214.171.124 Jigs and Tools
The coil is used to generate the voltage to operate the piezo ringer. If it
is defective, the ringer cannot work anymore.
Check the status of the coil by measuring its resistance with a
multimeter. The resistance must be very low. Also broken coils have to
Use hot air blower or soldering iron to remove defective coil.
Avoid excessive heat!
Watch surrounding components!
Resolder new coil afterwards.
Retest handset after repair.
Ringer Coil C25(88)
Hot Air Blower
Page 30 of 34
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