User Guide

TX IQ DP LOOP TEST

SIM CLK LOOP TEST

SIM IO CTRL LOOP TEST

MBUS RX TX LOOP TEST

BACKUP BATT TEST

RADIO TEST

WARRANTY TEST

PA TEMP TEST

SIM LOCK TEST

PPM VALIDITY TEST

KEYBOARD STUCK TEST

LPRF IF TEST

FLASH CHECKSUM TEST

CAMERA IF TEST

EXT RAM DATA BUS TEST

EXT RAM ADDR BUS TEST

NAND FLASH ID TEST

BT WAKEUP TEST

IR IF_TEST

If all these self tests are passed, the phone will start up. From Phoenix it is possible to run all the self tests and

the additional “Runtime test”.

Power key failure

If the power key does not work properly, follow these instructions:

1 Check power key connection in antenna connector.

2 Replace either antenna or PWB.

UI module keys troubleshooting

If the UI module keys are not working, do the following:

1 Check/replace UI-flex

2 Check baseband (if LED)

3 Replace PWB

RM-13/33

Baseband Troubleshooting and Tuning Nokia Customer Care

9240218 (Issue 1) Company Confidential Page 6–15