Baseband Troubleshooting Overview - Nokia RM-237 Service Manual

RM-237
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.
Abnormal current consumption
Flashing does not work or the problem is not clearly
defined
Charging does not work
Display does not work
Backlights do not work
USB does not work
Audio (mic, earpiece, IHF) does not work
Camera does not work
Bluetooth does not work
FM radio does not work
MicroSD card does not work
IrDA does not work
Issue 1
Problem
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Troubleshooting
1 General power checking (page 6–6)
2 Battery current measuring fault (page 6–6)
1 Flashing (page 6–15)
2 Clocking (page 6–9)
3 Combo memory (page 6–14)
Charging (page 6–8)
Display fault (page 6–20)
1 Backlight (page 6–23)
2 LED driver (page 6–24)
USB (page 6–43)
1 Audio (page 6–26)
2 Acoustics (page 6–26)
1 Camera baseband hardware (page 6–11)
2 Camera viewfinder (page 6–12)
3 Bad image quality (page 6–13)
Bluetooth (BT) (page 6–37)
FM radio (page 6–17)
MicroSD card (page 6–18)
IrDA (page 6–25)
Nokia Customer Care
Page 6 –5