3589.6Mhz At R503 - Nokia 6260 Repair Hints

Customer Care / Service & Support Readiness
Competence Transfer Team
Copyright © 2005 Nokia
Furthermore check that the SHF-oscillator is working. Check signal at R503 (3589.6MHz on TX-
channel 37) with an analyzer:
If 3589.6MHz signal at R503 is not measurable, check VR7 2.8VDC at both sides of L505. Also
check control voltage at R501, which varies between 0.7V and 3.8V.
In case that all above mentioned signals from both UEME D250 and UPP D370 are ok but still there
is no 897.4MHz TX signal measurable at R717, usually the RF-chip N500 itself is defect. Exchange
part with help of BGA rework system, but remember that it is necessary to retune the RF-values!
Edited by:
TBE

3589.6MHz at R503

Checked by:
SCCE
CONFIDENTIAL
03.02.2005
19 (21)
Repair Hints
Version 1.0 Approved
6260 / RM-25
Approved by:
MKO/PRZ