Table of Contents
Baseband main troubleshooting..........................................................................................................................3–5
Dead or jammed device troubleshooting............................................................................................................3–7
General power checking ........................................................................................................................................3–8
Clocking troubleshooting ................................................................................................................................... 3–10
Charging troubleshooting .................................................................................................................................. 3–11
Backup battery troubleshooting........................................................................................................................ 3–12
Flash programming troubleshooting................................................................................................................ 3–14
Combo memory troubleshooting ...................................................................................................................... 3–17
MicroSD card troubleshooting............................................................................................................................ 3–18
USB troubleshooting ........................................................................................................................................... 3–20
SIM card troubleshooting ................................................................................................................................... 3–21
Power key troubleshooting................................................................................................................................ 3–23
Vibra troubleshooting......................................................................................................................................... 3–24
Accelerometer troubleshooting......................................................................................................................... 3–25
Touch screen troubleshooting........................................................................................................................... 3–25
Introduction to touch screen troubleshooting ........................................................................................... 3–25
Proximity sensor troubleshooting................................................................................................................ 3–26
Resistive touch screen troubleshooting ...................................................................................................... 3–28
Hardware keys troubleshooting ........................................................................................................................ 3–30
Display module troubleshooting ....................................................................................................................... 3–32
General instructions for display troubleshooting....................................................................................... 3–32
Display troubleshooting ................................................................................................................................ 3–33
Display backlights troubleshooting.............................................................................................................. 3–34
Backlights and LED driver troubleshooting ...................................................................................................... 3–36
Ambient Light Sensor troubleshooting and re-calibration............................................................................. 3–38
Introduction to ALS troubleshooting and re-calibration ........................................................................... 3–38
Ambient Light Sensor calibration................................................................................................................. 3–39
Functionality check ................................................................................................................................... 3–39
Calibrating ALS........................................................................................................................................... 3–40
GPS troubleshooting ........................................................................................................................................... 3–41
GPS antenna.................................................................................................................................................... 3–41
GPS layout and basic test points................................................................................................................... 3–42
GPS RF test points........................................................................................................................................... 3–42
GPS settings for Phoenix................................................................................................................................ 3–44
GPS control................................................................................................................................................. 3–44
Oscillator test............................................................................................................................................. 3–46
Receiver self test ....................................................................................................................................... 3–47
CW Test....................................................................................................................................................... 3–48
Quick Test window.................................................................................................................................... 3–49
GPS failure troubleshooting.......................................................................................................................... 3–50
GPS basic checks troubleshooting ................................................................................................................ 3–51
Bluetooth and FM radio ...................................................................................................................................... 3–53
Bluetooth and FM radio introduction........................................................................................................... 3–53
Bluetooth and FM radio component placement ......................................................................................... 3–53
Bluetooth and FM Radio Self Tests ............................................................................................................... 3–55
Bluetooth BER test.......................................................................................................................................... 3–55
Bluetooth and FM radio module troubleshooting ...................................................................................... 3–57
TV out troubleshooting....................................................................................................................................... 3–58
Audio troubleshooting........................................................................................................................................ 3–59
Audio troubleshooting test instructions...................................................................................................... 3–59
RM-356
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 –3
Copyright © 2008 Nokia. All rights reserved.
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