Rf-Bb Interface (St_Cdsp_Rf_Bb_If_Test) - Nokia RM-42 Service Manual

Appendix A: RF Troubleshooting

2.1 RF-BB interface (ST_CDSP_RF_BB_IF_TEST)

RF_BB_IF test (86) tests the functionality of the RAP3G/HINKU/VINKU serial interface & reset lines. If this
test fails, it means that there's a problem programming Hinku and or Vinku and all of the following
tests cannot give correct data.
Tested signals: VBAT_ASIC, VDIG, VREFRF01, VXO, RFBUSDAT, RFBUSCLK, RFBUSENA, RXRESETX, TXRESETX
Error code for this self test is given in format:
0xyy, 0xzz
•
,where 0xyy, 0xzz part is the total error code:
Incorrect version number Incorrect version number Incorrect version number
read from the RX_IC read from the RX_IC
read from the RX_IC
(0x0001) (0x0001)
(0x0001)
YES YES YES YES
Incorrect version number Incorrect version number Incorrect version
read from the TX_IC read from the TX_IC
number read from the
(0x0008) (0x0008)
TX_IC (0x0008)
YES YES YES YES
VXO (VDIG) voltage OK? VXO (VDIG) voltage OK? VX O (VDIG) voltage OK?
YES YES YES YES
Propable cause: Propable cause:
Propable cause:
Solder problem/faulty RAP Solder problem/faulty RAP
Other possible reasons: Other possible reasons: Solder problem/faulty RAP
- Solder problem/faulty - Solder problem/faulty
Other possible reasons:
Hinku AND Vinku Hinku AND Vinku
-Solder problem/faulty
- Problem with RXRESETX - Problem with RXRESETX
Hinku AND Vinku
AND TXRESETX AND TXRESETX
-Problem with RXRESETX
and TXRESETX
ST_CDSP_RF_BB_IF_TEST ST_CDSP_RF_BB_IF_TEST ST_CDSP_RF_BB_IF_TEST
NO NO NO
Propable cause:
Solder problem/faulty
HINKU
Other possible reasons:
NO NO NO NO
-Problem in VDIG between
RETU & HINKU
-Problem with RXRESETX
NO NO NO
NO NO NO NO Propable cause:
Propable cause: Propable cause:
Problem in RETU or in
Problem in RETU or in Problem in RETU or in
VDIG between route
VDIG between route VDIG between route
RETU & HINKU & VINKU
RETU & HINKU & VINKU RETU & HINKU & VINKU
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0xyyzz
RX_IC is not reset correctly RX_IC is not reset correctly RX_IC is not reset
(0x0002) (0x0002)
correctly (0x0002)
YES YES YES YES
TX_IC is not reset correctly TX_IC is not reset correctly TX_IC is not reset correctly
NO NO NO NO
Is RXRESETX signal OK? Is RXRESETX signal OK? Is RXRESETX signal OK?
(0x0010) (0x0010)
(0x0010)
YES YES YES YES
Propable cause:
VXO (VDIG) voltage OK? Solder problem/faulty Solder problem/faulty
Solder problem/faulty
VXO (VDIG) voltage OK? VXO (VDIG) voltage OK?
Other possible reasons: Other possible reasons:
Other possible reasons:
Problem in VDIG between Problem in VDIG between
Problem in VDIG between
YES YES YES YES
Propable cause:
Propable cause: Propable cause:
Solder problem/faulty RAP
Solder problem/faulty RAP Solder problem/faulty RAP
Other possible reasons: Other possible reasons: Other possible reasons:
Solder problem/faulty Solder problem/faulty
-Solder problem/faulty
Hinku AND Vinku Hinku AND Vinku
Hinku AND Vinku
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Continue to Continue to Continue to
NO NO NO
ST ST _CDSP_RF_BB_IF_TEST _CDSP_RF_BB_IF_TEST
S T_CDSP_RF_BB_IF_TEST
FAI FAI LURE PAGE_2 LURE PAGE_2
FAILURE PAGE 2
NO NO NO
YES YES YES YES
Propable cause: Propable cause:
HINKU HINKU
HINKU
RETU & HINKU RETU & HINKU
RETU & HINKU
Propable cause:
Propable cause: Propable cause:
Solder problem/faulty RAP Solder problem/faulty RAP Solder problem/faulty RAP
Other possible reasons: Other possible reasons:
Other possible reasons:
Short circuit under HINKU/ Short circuit under HINKU/
-Short circuit under
Faulty HINKU Faulty HINKU
HINKU/Faulty HINKU
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