Tx Iq Self Test (St_Cdsp_Tx_Iq_Test) - Nokia RM-42 Service Manual

Hide thumbs Also See for RM-42:

Table of Contents

Appendix A: RF Troubleshooting

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:

ST_CDSP_TX_IQ_TEST

ALL or ANY ERROR

Propable cause:

Poor soldering/faulty

Poor soldering/faulty RAP

Other possible reasons:

RETU, but since we've

gotten this far

without fails it should be

Company Confidential

Nokia Customer Care

Table of Contents