User Guide

NPM-2NX
Troubleshooting CCS Technical Documentation
Page 4 ãNokia Corporation Issue 1 07/02
Transceiver Troubleshooting
General about testing
Phone operating modes
Phone has three different modes for testing/repairing phone. Modes can be selected with
suitable resistors connected to BSI- and BTEMP- lines as following:
Table 1: Mode selection resistors
The MCU software enters automatically to local or test mode at start-up if correspond-
ing resistors are connected.
Note! Baseband doesn't wake up automatically when the battery voltage is connected
(normal mode). Power can be switched on by
• Pressing the power key
• connecting a charger
• RC-alarm function
In the local and test mode the baseband can be controlled through MBUS or FBUS (FBUS
is recommended) connections by a Phoenix service software.
Mode BSI- resistor BTEMP- resistor Remarks
Normal 68k 47k
Local 560_ (<1k_) What ever
Test 3.3k (> 1k) 560_ (<1k_) Recommended with baseband testing. Same as
local mode, but making a phone call is possible.