User Guide

CCS Technical Documentation Troubleshooting
NPM-2NX
Issue 1 07/02 ãNokia Corporation Page 7
Baseband Troubleshooting
Note: ESN and IMEI has to re-written to phone If UEM is replaced. This can be
done only in Central Service.
The Baseband Troubleshooting instructions consists of the following topics:
•Power up
• Flash programming
•Audio
•Earpiece
•Microphone
• Charging
• Accessory detection
• Data cable
•Sleep clock
• User interface
•Display
•Lights
•Buzzer
•Vibra
•Keyboard
•Infra red
• Power up faults
Power up sequence
UEM acts as a HW master during start up
• Vbatt limits: 2.1V for internal state machine, 3V triggering whole startup
• Regulator sequencing