User Guide

Table of Contents
Baseband troubleshooting....................................................................................................................................6–5
Dead or jammed device troubleshooting............................................................................................................6–7
General power checking troubleshooting...........................................................................................................6–8
Clocking troubleshooting......................................................................................................................................6–9
Application processor clocking troubleshooting..............................................................................................6–10
Application processor troubleshooting.............................................................................................................6–11
Charging troubleshooting...................................................................................................................................6–13
Battery current measuring fault troubleshooting............................................................................................6–14
Flash programming fault troubleshooting........................................................................................................6–15
CMT SDRAM memory troubleshooting................................................................................................................6–18
CMT NOR flash fault troubleshooting..................................................................................................................6–19
Application processor memory troubleshooting..............................................................................................6–21
Power key troubleshooting.................................................................................................................................6–23
USB interface troubleshooting............................................................................................................................6–24
SIM card troubleshooting....................................................................................................................................6–27
MMC troubleshooting...........................................................................................................................................6–29
Keyboard, sidekey and joystick troubleshooting..............................................................................................6–31
Slider switch troubleshooting.............................................................................................................................6–33
Certificate restoring for BB5.0 products............................................................................................................6–34
Display module troubleshooting........................................................................................................................6–39
General instructions for display troubleshooting........................................................................................6–39
Display fault troubleshooting........................................................................................................................6–41
Display and keyboard backlight troubleshooting........................................................................................6–42
ALS troubleshooting........................................................................................................................................6–44
LED driver troubleshooting............................................................................................................................6–47
Bluetooth troubleshooting..................................................................................................................................6–48
Introduction to Bluetooth troubleshooting.................................................................................................6–48
Bluetooth settings for Phoenix......................................................................................................................6–51
Bluetooth self tests in Phoenix......................................................................................................................6–51
FLALI/BT audio failure troubleshooting........................................................................................................6–53
Bluetooth BER failure troubleshooting.........................................................................................................6–54
Audio troubleshooting.........................................................................................................................................6–56
Audio troubleshooting test instructions......................................................................................................6–56
Internal earpiece troubleshooting................................................................................................................6–60
Internal microphone troubleshooting..........................................................................................................6–61
IHF troubleshooting........................................................................................................................................6–62
External microphone troubleshooting..........................................................................................................6–63
External earpiece troubleshooting................................................................................................................6–64
Vibra troubleshooting....................................................................................................................................6–65
Baseband manual tuning guide.........................................................................................................................6–66
Energy management calibration...................................................................................................................6–66
List of Tables
Table 2 Display module troubleshooting cases................................................................................................6–39
Table 3 Pixel defects............................................................................................................................................6–39
Table 4 Calibration value limits..........................................................................................................................6–66
List of Figures
RM-49
BB Troubleshooting and Manual Tuning Guide Nokia Customer Care
Issue 1 COMPANY CONFIDENTIAL Page 6 –3
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