Display Information: Contact Service; The Phone Doesn't Register To The Network Or Phone Doesn't Make A Call - Nokia NSB-1 Series Troubleshooting Instructions

PAMS
Technical Documentation

Display Information: Contact Service

This fault means that software is able to run and thus the watchdog of
CCONT (N100) can be served.
Selftest functions are run when power is switched on and software is
started to excute from flash.
If any of selftests failed, contact service information will be shown on dis-
play.
The phone doesn't register to the network or phone
doesn't make a call
f the phone doesn't register to the network or the phone doesn't make a
call, the reason could be either the baseband or the RF part.
The phone can be set to wanted mode by WinTesla service software and
determinate if the fault is in RF or in baseband part (RF interface mea-
surements).
The control lines for RF part are supplied both the System Asic
(MAD2;D200) and the RFI (Cobba; N300). MAD2 handles digital control
lines ( like synthe, TxP etc.) and Cobba handles analog control lines (like
AFC, TxC etc.).
The DSP software is constructed so that operation states of DSP (MAD2)
can be seen in external flag (DSPXF) output pin (D200 pin 91).
Original 06/98
1 2 3
NSB–1/3
Troubleshooting Instructions
1. DSP initialization done
2.Synchronization to network
done
3. Registrarition to network
done.
MAD2 pin 91 (DSPXF)
J222
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