User Guide

Various errors can appear from the prommer when flashing the phone - not all of them can be directly linked

to the hardware.

Because uBGA components are used, it is not possible to verify if there is a short circuit in control and address/

data lines on TikuEDGE, NOR flash, NAND flash or SDRAM.

Figure 83 Flash programming troubleshooting

User interface troubleshooting

Display information: "Contact service"

When this error appears in the display it means that one or more of the internal baseband tests has failed. The

baseband tests (self tests) are performed each time the phone is powered on. The self tests are divided into

those performed while powering up (Start up tests) and the ones that can be executed with a PC using Phoenix

(Runtime tests). The following Start-up tests are performed during power up:

UEM CBUS IF TEST

SLEEP X LOOP TEST

AUX DA LOOP TEST

EAR DATA LOOP TEST

TX IDP LOOP TEST

RM-13/33

Nokia Customer Care Baseband Troubleshooting and Tuning

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