User Guide

Table Of Contents
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 Troubleshooting
Abnormal current consumption 1 General power checking (page 3–6)
2 Battery current measuring fault (page 3–6)
Flashing does not work or the problem is not clearly
defined
1 Flashing (page 3–15)
2 Clocking (page 3–9)
3 Combo memory (page 3–14)
Charging does not work Charging (page 3–8)
Display does not work Display fault (page )
Backlights do not work 1 Backlight (page 3–23)
2 LED driver (page 3–8)
USB does not work USB (page 3–42)
Audio (mic, earpiece, IHF) does not work 1 Audio (page 3–25)
2 Acoustics (page 3–25)
Camera does not work 1 Camera baseband hardware (page 3–11)
2 Camera viewfinder (page 3–12)
3 Bad image quality (page 3–13)
Bluetooth does not work Bluetooth (BT) (page 3–36)
FM radio does not work FM radio (page 3–17)
MicroSD card does not work MicroSD card (page )
RM-272; RM-273
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 –5
Copyright © 2007 Nokia. All rights reserved.