User Guide

Nokia Customer Care
Appendix A: RF Troubleshooting
A-10
Company Confidential
Copyright © 2005 Nokia. All rights reserved
ST_CDSP_RF_SUPPLY_TEST,
VINKU ERRORS, PAGE2
Propable cause:
Poor soldering/faulty RETU
Other possible reasons
:
- Problem in VB_ext connection
between RF & BB
- Poor soldering/faulty
HINKU AND VINKU
NO
YES
YES
Propable cause:
Poor solder/Faulty VINKU
NO
NO
YES
Propable cause:
Faulty Vinku /Test error
(BB/IF tests have been
passed so VDIG has to be OK!
So the problem is in the testmux )
NO
YES
YES
YES
Propable cause:
Test error
NO
Propable cause:
Poor solder/Faulty VINKU
Other possible reasons
:
Faulty capacitor connected
to VR1
NO
YES
YES
YES
Propable cause:
Test error
Propable cause:
Poor solder/Faulty VINKU
Other possible reasons
:
Faulty capacitor connected
to VR2
NO
Go to
ST_CDSP_RF_SUPPLY
_
TEST VINKU ERRORS
PAGE 3
VB_EXT line fail
(0x0001)
ST_CDSP_RF_SUPPLY_TEST,
VINKU ERRORS, PAGE2
NO
YES
Does also Hinku’s VB_EXT
line fail (0x0001)
YES
NO
VXO supply fail
(0x0002)
NO
YES
Propable cause:
Faulty Vinku/Test error
(BB/IF tests have been passed so
VDIG has to be OK! So the
problem is in the test mux)
VBAT1 OR VR1
(0x0004)
NO
YES
VBAT1 (VBAT_ASIC)
OK?
YES
YES
NO
NO
YES
YES
YES
NO
Go to
ST_CDSP_RF_SUPP
LY
_TEST VINKU
ERRORS PAGE 3
VBAT2 OR VR2
(0x0008)
Propable cause:
Poor soldering/faulty RETU
Other possible reasons:
-Problem in VB_EXT connection
between RF & BB
- Poor soldering/faulty HINKU and
VINKU
Propable cause:
Poor solder/faulty VINKU
Propable cause:
Test error
Propable cause:
Test error
Propable cause:
Poor soldering/faulty RETU
Other possible reasons:
Faulty capacitor connected
to VR1
Propable cause:
Poor solder/faulty VINKU
Other possible reasons:
Faulty capacitor connected
to VR2
VBAT2 (VBAT_ASIC)
OK?
VR1 (VREG1) OK? VR2 (VREG2) OK?