Txc Data Test (St_Txc_Data_Test) - Nokia RM-42 Service Manual

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2.4 TXC Data test (ST_TXC_DATA_TEST)

TXC_DATA_TEST (74) tests that the TXC line between RETU & VINKU is properly connected. If this fails

also TX power tests will fail.

Test covers: TxC power control signal, Retu (N2200), RFBUS, Vinku (N7501), VBAT_ASIC

Error code for this self test is given in format:

0xyy, 0xzz, MeasResult1, MeasResult2, ...

,where 0xyy, 0xzz part is the main part of the error code:

Other possible reasons:

Vinku, but it only routes the

voltage back to RETU so in this

test, so it's very unlikely.

ST_CDSP_TXC_DATA_TEST

TXC too high at min

input (0x0001)

Propable cause:

Company Confidential

TXC too low at max

input (0x0002)

Propable cause:

Poor soldering/Faulty VINKU

Poor soldering/Faulty RETU

Appendix A: RF Troubleshooting

It's not possible to

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