User Guide

Table of Contents
Baseband main troubleshooting..........................................................................................................................6–5
Dead or jammed device troubleshooting............................................................................................................6–6
General power checking troubleshooting ...........................................................................................................6–7
CMT clocking troubleshooting...............................................................................................................................6–8
APE clocking troubleshooting ...............................................................................................................................6–9
APE troubleshooting ........................................................................................................................................... 6–10
Charging troubleshooting .................................................................................................................................. 6–11
Battery current measuring fault troubleshooting ........................................................................................... 6–12
Flash programming fault troubleshooting....................................................................................................... 6–13
APE memory troubleshooting............................................................................................................................ 6–15
Power key troubleshooting................................................................................................................................ 6–16
USB interface troubleshooting........................................................................................................................... 6–17
SIM card troubleshooting ................................................................................................................................... 6–18
MicroSD card troubleshooting............................................................................................................................ 6–19
IR troubleshooting .............................................................................................................................................. 6–20
S60 keyboard troubleshooting .......................................................................................................................... 6–21
T9 keyboard troubleshooting ............................................................................................................................ 6–22
Certificate restoring for BB5 products............................................................................................................... 6–23
Display module troubleshooting ....................................................................................................................... 6–28
General instructions for display troubleshooting....................................................................................... 6–28
LCD troubleshooting ...................................................................................................................................... 6–30
Display and keyboard backlight troubleshooting....................................................................................... 6–31
ALS troubleshooting....................................................................................................................................... 6–33
LED driver troubleshooting ........................................................................................................................... 6–36
EL backlight fault troubleshooting............................................................................................................... 6–38
Bluetooth troubleshooting................................................................................................................................. 6–39
Introduction to Bluetooth troubleshooting ................................................................................................ 6–39
Bluetooth self tests in Phoenix..................................................................................................................... 6–40
Bluetooth BER tests in Phoenix..................................................................................................................... 6–41
BT failure troubleshooting ............................................................................................................................ 6–44
Bluetooth BER failure troubleshooting........................................................................................................ 6–45
Audio troubleshooting........................................................................................................................................ 6–47
Audio troubleshooting test instructions...................................................................................................... 6–47
Internal earpiece troubleshooting ............................................................................................................... 6–51
Internal microphone troubleshooting......................................................................................................... 6–52
IHF troubleshooting....................................................................................................................................... 6–53
External earpiece troubleshooting............................................................................................................... 6–54
External microphone troubleshooting......................................................................................................... 6–55
Vibra troubleshooting.................................................................................................................................... 6–56
Baseband manual tuning guide......................................................................................................................... 6–56
Energy management calibration.................................................................................................................. 6–56
List of Tables
Table 8 Display module troubleshooting cases................................................................................................ 6–28
Table 9 Pixel defects ........................................................................................................................................... 6–29
Table 10 Calibration value limits ....................................................................................................................... 6–57
List of Figures
RM-208
BB Troubleshooting and Manual Tuning Guide Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 6 –3
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