User Guide

Table of Contents
Baseband troubleshooting overview...................................................................................................................3–5
Power and charging troubleshooting..................................................................................................................3–6
General power checking troubleshooting ......................................................................................................3–6
Battery current measuring fault troubleshooting .........................................................................................3–6
Charging troubleshooting ................................................................................................................................3–8
Clocking troubleshooting .................................................................................................................................3–9
Interface troubleshooting .................................................................................................................................. 3–11
Camera failure ................................................................................................................................................ 3–11
Camera baseband hardware failure troubleshooting........................................................................... 3–11
Camera viewfinder troubleshooting....................................................................................................... 3–12
Camera: Bad image quality troubleshooting ......................................................................................... 3–13
COMBO memory troubleshooting ................................................................................................................. 3–14
Flash programming fault troubleshooting.................................................................................................. 3–16
FM radio troubleshooting................................................................................................................................... 3–18
FM radio schematic ........................................................................................................................................ 3–18
FM radio testing with headset...................................................................................................................... 3–18
FM radio component layout .......................................................................................................................... 3–19
FM radio troubleshooting.............................................................................................................................. 3–19
User interface troubleshooting.......................................................................................................................... 3–21
Display module troubleshooting.................................................................................................................. 3–21
General instructions for display troubleshooting.................................................................................. 3–21
Display troubleshooting ........................................................................................................................... 3–23
Backlight troubleshooting............................................................................................................................. 3–24
LED driver troubleshooting ........................................................................................................................... 3–25
MR sensor (switch) troubleshooting ............................................................................................................ 3–27
Audio troubleshooting........................................................................................................................................ 3–27
Audio troubleshooting test instructions...................................................................................................... 3–27
Internal earpiece troubleshooting ............................................................................................................... 3–30
External earpiece troubleshooting............................................................................................................... 3–31
IHF troubleshooting....................................................................................................................................... 3–32
Internal microphone troubleshooting......................................................................................................... 3–33
External microphone troubleshooting......................................................................................................... 3–34
Acoustics troubleshooting.................................................................................................................................. 3–35
Introduction to acoustics troubleshooting ................................................................................................. 3–35
Earpiece troubleshooting.............................................................................................................................. 3–36
IHF troubleshooting....................................................................................................................................... 3–37
Microphone troubleshooting ........................................................................................................................ 3–38
Connections troubleshooting............................................................................................................................. 3–39
Bluetooth troubleshooting ........................................................................................................................... 3–39
Introduction to Bluetooth troubleshooting ........................................................................................... 3–39
Bluetooth settings for Phoenix................................................................................................................ 3–40
Bluetooth Phoenix and test setup........................................................................................................... 3–41
Bluetooth self tests in Phoenix................................................................................................................ 3–43
Bluetooth troubleshooting ...................................................................................................................... 3–45
Bluetooth BER failure troubleshooting................................................................................................... 3–45
Bluetooth audio and UI activation troubleshooting ............................................................................. 3–47
USB troubleshooting...................................................................................................................................... 3–49
Baseband manual tuning guide......................................................................................................................... 3–50
Certificate restoring for BB5 products.......................................................................................................... 3–50
Energy management calibration.................................................................................................................. 3–55
RM-164
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 –3
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