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Nokia Customer Care
Appendix A: RF Troubleshooting
Company Confidential
Copyright
©
2005 Nokia. All rights reserved
A-13
2.3 TX IQ self test (ST_CDSP_TX_IQ_TEST)
TX_IQ_TEST (85) checks that the TXIQ lines between RAP & Vinku are properly connected. If this
fails also power tests and RXIQ loopback will fail.
Tested signals: VBAT_ASIC, TXIP, TXIQ, TXQP, TXQN, DAC_REF1, RFBUS
Error code for this self test is given in format:
•
0xyy, 0xzz, MeasResult1, MeasResult2, …
,where 0xyy, 0xzz is the main part of the error code:
0xyyzz
ALL or ANY ERROR
(0x00xx)
ST_CDSP_TX_IQ_TEST
ERRORS
Propable cause:
Poor soldering/faulty
VINKU
Poor soldering/faulty RAP
Other possible reasons:
RETU, but since we’ve
gotten this far
without fails it should be
OK
YES
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