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Table of Contents

Baseband self tests in Phoenix .............................................................................................................................3–5

Power and charging troubleshooting..................................................................................................................3–7

Dead or jammed device troubleshooting.......................................................................................................3–7

General power checking...................................................................................................................................3–9

Charging troubleshooting ................................................................................................................................3–9

Interface troubleshooting .................................................................................................................................. 3–11

Flash programming fault troubleshooting.................................................................................................. 3–11

Combo memory troubleshooting ................................................................................................................. 3–13

USB interface troubleshooting...................................................................................................................... 3–14

SIM card troubleshooting .............................................................................................................................. 3–15

User interface troubleshooting.......................................................................................................................... 3–16

Keypad troubleshooting................................................................................................................................ 3–16

Display module troubleshooting.................................................................................................................. 3–16

General instructions for display troubleshooting.................................................................................. 3–16

Display troubleshooting ........................................................................................................................... 3–17

Keyboard backlight troubleshooting ...................................................................................................... 3–19

Camera troubleshooting..................................................................................................................................... 3–20

Camera troubleshooting................................................................................................................................ 3–20

Camera and HWA HW troubleshooting ........................................................................................................ 3–21

Camera AF troubleshooting........................................................................................................................... 3–23

Camera flash troubleshooting ...................................................................................................................... 3–24

Audio troubleshooting........................................................................................................................................ 3–25

Audio troubleshooting test instructions...................................................................................................... 3–25

Internal earpiece troubleshooting ............................................................................................................... 3–29

Internal microphone troubleshooting......................................................................................................... 3–29

Internal handsfree (IHF) troubleshooting.................................................................................................... 3–31

External earpiece troubleshooting............................................................................................................... 3–32

Vibra troubleshooting.................................................................................................................................... 3–32

TV Out troubleshooting ................................................................................................................................. 3–34

TV Out troubleshooting ............................................................................................................................ 3–34

Baseband manual tuning guide......................................................................................................................... 3–34

Certificate restoring for BB5 products.......................................................................................................... 3–34

Energy management calibration.................................................................................................................. 3–40

List of Tables

Table 4 Display module troubleshooting cases................................................................................................ 3–16

Table 5 Pixel defects ........................................................................................................................................... 3–17

Table 6 Calibration value limits ......................................................................................................................... 3–40

List of Figures

Figure 9 Flashing pic 1. Take single trig measurement for the rise of the BSI signal.................................. 3–12

Figure 10 Flashing pic 2. Take single trig measurement for the rise of the BSI signal................................ 3–13

Figure 11 Single-ended output waveform of the Ext_in_HP_out measurement........................................... 3–27

Figure 12 Differential output waveform of the Ext microphone in out loop measurement Int handsfree

out. ............................................................................................................................................................. 3–27

Figure 13 Single-ended output waveform of the AV ear loop when microphone is connected................. 3–28

RM-352; RM-354

BB Troubleshooting and Manual Tuning Guide

Issue 1 COMPANY CONFIDENTIAL Page 3 –3