Nokia 6680 RM-36 Service Manual page 257

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