Baseband Troubleshooting Overview - Nokia RM-70 Service Manual

RM-70
BB Troubleshooting and Manual Tuning Guide

Baseband troubleshooting overview

This section is intended to be a guide for localising and repairing electrical faults.
The table below tells you what troubleshooting to go to.
Problem
Phone does not stay on or is jammed
Abnormal current consumption
Flashing does not work or the problem is not clearly
defined
Charging does not work
Display does not work
Keypad does not work
Backlights do not work
Phone does not read SIM card
USB does not work
Audio (mic, earpiece, IHF) does not work
Camera does not work
Swivel detection
Camera flash LED does not work
Bluetooth does not work
FM radio does not work
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Troubleshooting
1 Dead or jammed phone
2 Power key
1 General power checking
2 Battery current measuring fault
1 Flashing
2 Clocking
3 Combo memory
1 Charging
1 Display fault
1 Keypad
1 Display and keyboard backlight
2 LED driver
1 SIM
1 USB
1 Audio
2 Acoustics
1 Camera hardware failure message
2 Camera baseband hardware
3 Camera viewfinder
4 Bad image quality
1 Swivel detection troubleshooting
1 Flash LED
1 Bluetooth (BT)
1 FM radio
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