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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:
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