Table of Contents

Baseband self tests in Phoenix 3-5

Power and charging troubleshooting 3-7

Dead or jammed device troubleshooting 3-7

Power key troubleshooting 3-9

General voltage checking troubleshooting 3-10

General power checking 3-12

Charging troubleshooting 3-13

USB charging troubleshooting 3-13

Battery current measuring fault troubleshooting 3-15

Clocking troubleshooting 3-16

Interface troubleshooting 3-17

Flash programming fault troubleshooting 3-17

SIM card troubleshooting 3-20

MicroSD card troubleshooting 3-21

USB data interface troubleshooting 3-22

User interface troubleshooting 3-25

Keyboard and side keys troubleshooting 3-25

Power key troubleshooting 3-26

Keyboard LEDs and Navi key LEDs troubleshooting 3-27

Display module troubleshooting 3-27

General instructions for display troubleshooting 3-27

Display fault troubleshooting 3-29

Display backlight troubleshooting 3-30

Hall sensor troubleshooting 3-31

Camera module troubleshooting 3-32

Taking and evaluating test pictures with main camera 3-32

Main camera troubleshooting 3-33

Main camera baseband troubleshooting 3-33

Main camera no recognizable viewfinder image troubleshooting 3-35

Main camera bad image quality troubleshooting 3-35

Audio troubleshooting 3-37

Audio troubleshooting test instructions 3-37

Internal earpiece troubleshooting 3-41

Internal microphone troubleshooting 3-41

Internal handsfree (IHF) troubleshooting 3-43

External earpiece troubleshooting 3-44

External microphone troubleshooting 3-45

Acoustics troubleshooting 3-46

Introduction to acoustics troubleshooting 3-46

Earpiece troubleshooting 3-47

IHF troubleshooting 3-47

Microphone troubleshooting 3-49

Vibra troubleshooting 3-50

Bluetooth and FM radio troubleshooting 3-51

Bluetooth troubleshooting 3-51

FM radio troubleshooting 3-52

Baseband manual tuning guide 3-52

Certificate restoring for BB5 products 3-52

Energy management calibration 3-58

List of Tables

Table 6 Display module troubleshooting cases 3-27

Table 7 Pixel defects 3-28

Table 8 Calibration value limits 3-58

List of Figures

Figure 8 Flashing pic 1. Take single trig measurement for the rise of the BSI signal 3-18

Figure 9 Flashing pic 2. Take single trig measurement for the rise of the BSI signal 3-19

Figure 10 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected 3-39

Figure 11 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is connected 3-39

Figure 12 Single-ended output waveform of the HP_in_Ext_out loop when microphone is connected 3-40

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DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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