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Repair Of N602 - Siemens AC265 Service Manual

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5.5 Repair of N602

Affected unit:
Diagnosis code IRIS:
Repair level:
Components:
Needed equipment:
Working material:
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:
Confidential
Version 1.5
A165/ 265, AC165/ 265 base station
81000 (Radio/ No contact)
Level 2.2
N602 (3.3V regulator from supplier Infineon)
Hot air blower, tweezers
None
16
Siemens Home and Office
Communication Devices GmbH & Co. KG
SHC CC RCT
J. Junggebauer

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