Table of Contents
Baseband main troubleshooting..........................................................................................................................3–5
General power checking troubleshooting ...........................................................................................................3–6
Dead or jammed device troubleshooting............................................................................................................3–7
TV-out troubleshooting .........................................................................................................................................3–8
Charging troubleshooting .....................................................................................................................................3–9
USB troubleshooting ........................................................................................................................................... 3–10
SIM card troubleshooting ................................................................................................................................... 3–11
Memory cards troubleshooting.......................................................................................................................... 3–12
Clocking troubleshooting ................................................................................................................................... 3–14
Lock key troubleshooting................................................................................................................................... 3–15
CIR troubleshooting ............................................................................................................................................ 3–16
Application processor troubleshooting ............................................................................................................ 3–17
Application processor memory troubleshooting............................................................................................. 3–18
Display module troubleshooting ....................................................................................................................... 3–19
General instructions for display troubleshooting....................................................................................... 3–19
Accelerometer troubleshooting.................................................................................................................... 3–21
Display troubleshooting ................................................................................................................................ 3–22
Display backlight troubleshooting ............................................................................................................... 3–23
Touch screen troubleshooting...................................................................................................................... 3–24
Illumination troubleshooting ....................................................................................................................... 3–25
Qwerty keyboard illumination troubleshooting.................................................................................... 3–25
RGB LED troubleshooting.......................................................................................................................... 3–26
Keyboard troubleshooting ................................................................................................................................. 3–27
Power key troubleshooting........................................................................................................................... 3–27
Volume keys troubleshooting....................................................................................................................... 3–27
Keyboard troubleshooting ............................................................................................................................ 3–29
Camera key troubleshooting......................................................................................................................... 3–29
Sensors troubleshooting .................................................................................................................................... 3–31
Slide detection troubleshooting................................................................................................................... 3–31
Camera cover troubleshooting ..................................................................................................................... 3–31
Battery cover detection troubleshooting .................................................................................................... 3–33
Proximity sensor troubleshooting................................................................................................................ 3–33
Audio troubleshooting........................................................................................................................................ 3–35
Audio troubleshooting test instructions...................................................................................................... 3–35
External earpiece troubleshooting............................................................................................................... 3–37
AIC34 troubleshooting................................................................................................................................... 3–37
External microphone troubleshooting......................................................................................................... 3–39
Internal earpiece troubleshooting ............................................................................................................... 3–40
Internal handsfree speaker troubleshooting.............................................................................................. 3–41
Internal microphone troubleshooting......................................................................................................... 3–42
Vibra troubleshooting.................................................................................................................................... 3–43
ALS technical description and troubleshooting ............................................................................................... 3–44
Ambient Light Sensor..................................................................................................................................... 3–44
ALS troubleshooting....................................................................................................................................... 3–44
Re-tuning ALS.................................................................................................................................................. 3–45
Bluetooth and FM radio troubleshooting ......................................................................................................... 3–46
Introduction to Bluetooth/FM radio troubleshooting................................................................................ 3–46
Bluetooth BER test.......................................................................................................................................... 3–49
Bluetooth and FM radio self tests in Phoenix.............................................................................................. 3–50
Bluetooth troubleshooting ........................................................................................................................... 3–51
RX-51
BB Troubleshooting
Issue 1 COMPANY CONFIDENTIAL Page 3 –3
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