Nokia RM-42, Руководство по обслуживанию

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Appendix A: RF Troubleshooting Nokia Customer Care
Company Confidential
Copyright © 2005 Nokia. All rights reserved
A-11
VRFTX Fail
(0x0010)
ST_CDSP_RF_SUPPLY_TES
VINKU ERRORS, PAGE
NO
YES
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VRXTX pin
VVGA Fail
(0x0020)
NO
YES
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VVGA pin
VVCO Fail
(0x0040)
YES
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VVCO pin
NO
VLO Fail
(0x0080)
YES
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VLO pin
VPRE Fail
(0x0100)
NO
YES
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VPRE pin
RB_EXT or internal
bias block
(0x0200)
YES
Propable cause:
Poor solder/Faulty Vinku
Other possible reasons:
Wrong or missing resistor at
NO
Temperature sensor
(0x0800)
YES
Propable cause:
Faulty Vinku
Other possible reasons:
NO
It’s not possible to
get here …
NO
VRFTX fail
(0x0010)
ST_CDSP_RF_SUPPLY_TEST,
VINKU ERRORS, PAGE 3
NO
YES
NO
YES
YES
NO
YES
NO
YES
YES
NO
YES
NO
It’s not possible to get
here…
NO
VVGA fail
(0x0020)
VVCO fail
(0x0040)
VLO fail
(0x0080)
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VRXTX pin
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VVGA pin
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VVCO pin
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VLO pin
Propable cause:
Poor solder
Other possible reasons:
Faulty capacitor at VPRE pin
Propable cause:
Poor solder/Faulty VINKU
Other possible reasons:
Wrong or missing resistor at
RB_ext pin
Propable cause:
Faulty VINKU
Other possible reasons:
Too hot or cold
environment…
VPRE fail
(0x0100)
RBE_EXT or internal
bias block
(0x0200)
Temperature sensor
(0x0800)