Baseband Troubleshooting; Power Up Sequence - Nokia NPM-2NX Troubleshooting Manual

CCS Technical Documentation

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
Issue 1 07/02 ãNokia Corporation
NPM-2NX
Troubleshooting
Page 7