Nokia RM-57 Service Manual page 229

Nokia Customer Care
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
(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
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
VPRE fail
bias block
bias block
(0x0100)
(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
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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)
YES YES
Propable cause:
Propable cause:
Faulty VINKU
Faulty Vinku
Other possible reasons:
Other possible reasons:
Too hot or cold
RB_ext pin environment...
Company Confidential
Appendix A: RF Troubleshooting
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
NO NO It's not possible to get
get here ...
(0x0800) here...
YES YES
NO NO
YES YES
A-11