Baseband Troubleshooting; Power Up Sequence - Nokia RH-13 Series Troubleshooting Manual

Transceivers
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RH-13
Troubleshooting

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
Page 8
ãNokia Corporation
CCS Technical Documentation
Issue 1 11/02

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