Siemens Home and Office
Communication Devices GmbH & Co. KG
Confidential
16
SHC CC RCT
Version 1.5
J. Junggebauer
5.5 Repair of N602
Affected unit:
A165/ 265, AC165/ 265 base station
Diagnosis code IRIS:
81000 (Radio/ No contact)
Repair level:
Level
2.2
Components:
N602 (3.3V regulator from supplier Infineon)
Needed equipment:
Hot air blower, tweezers
Working material:
None
Diagnosis:
Infineon chip could cause voltage drops when the RF part is busy. This should appear often shortly
after picking up the handset to accept or make a call but could in some cases also appear during a
call. Before replacing the regulator it has to be made sure that the problem is caused by the base
station.
Repair:
Replace N602 if Infineon is equipped (see picture below to identify Infineon) by one of the supplier
Fairchild or ST. The part number for L2.2 is: EFW: V-REGC686-D671
Test:
Make a call.
Infineon
chip:
