User Guide

Table of Contents
Baseband troubleshooting....................................................................................................................................6–5
General power checking troubleshooting...........................................................................................................6–7
Clocking troubleshooting......................................................................................................................................6–8
Battery current measuring fault troubleshooting............................................................................................6–10
Flash programming fault troubleshooting........................................................................................................6–11
COMBO memory troubleshooting.......................................................................................................................6–12
Keyboard troubleshooting..................................................................................................................................6–12
USB troubleshooting............................................................................................................................................6–14
Backup battery troubleshooting.........................................................................................................................6–15
Charging troubleshooting...................................................................................................................................6–16
Dead or jammed troubleshooting......................................................................................................................6–17
Accelerometer troubleshooting..........................................................................................................................6–18
Vibra troubleshooting..........................................................................................................................................6–19
MicroSD troubleshooting.....................................................................................................................................6–20
SIM troubleshooting.............................................................................................................................................6–21
Display module troubleshooting........................................................................................................................6–22
General instructions for display troubleshooting........................................................................................6–22
Display fault troubleshooting........................................................................................................................6–24
Display and keyboard backlight troubleshooting........................................................................................6–25
LED driver troubleshooting............................................................................................................................6–27
Bluetooth and FM radio troubleshooting..........................................................................................................6–28
Introduction to Bluetooth/FM Radio troubleshooting................................................................................6–28
Bluetooth settings for Phoenix......................................................................................................................6–29
Bluetooth self tests in Phoenix......................................................................................................................6–30
Bluetooth BER failure troubleshooting.........................................................................................................6–32
BT audio failure troubleshooting..................................................................................................................6–34
FM Radio troubleshooting..............................................................................................................................6–35
Audio troubleshooting.........................................................................................................................................6–36
Audio troubleshooting test instructions......................................................................................................6–36
Internal earpiece troubleshooting................................................................................................................6–39
Internal microphone troubleshooting..........................................................................................................6–40
IHF speakers troubleshooting........................................................................................................................6–41
External microphone troubleshooting..........................................................................................................6–42
External earpiece troubleshooting................................................................................................................6–43
Introduction to acoustics troubleshooting..................................................................................................6–44
Earpiece troubleshooting...............................................................................................................................6–45
IHF troubleshooting........................................................................................................................................6–46
Microphone troubleshooting.........................................................................................................................6–47
Baseband manual tuning guide.........................................................................................................................6–48
Energy management calibration...................................................................................................................6–48
List of Tables
Table 7 Display module troubleshooting cases................................................................................................6–22
Table 8 Pixel defects............................................................................................................................................6–23
Table 9 Calibration value limits..........................................................................................................................6–48
List of Figures
Figure 34 SleepCLK..................................................................................................................................................6–9
RM-86
BB Troubleshooting and Manual Tuning Guide Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 6 –3
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