Nokia 6120 classic - Table 7 Power

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Table of Contents

Troubleshooting overview ....................................................................................................................................3–5

Dead or jammed device troubleshooting............................................................................................................3–6

General power checking ........................................................................................................................................3–7

Clocking troubleshooting ......................................................................................................................................3–8

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

Backup battery troubleshooting........................................................................................................................ 3–10

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

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

MicroSD card troubleshooting............................................................................................................................ 3–14

USB interface troubleshooting........................................................................................................................... 3–16

SIM card troubleshooting ................................................................................................................................... 3–17

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

Power key troubleshooting................................................................................................................................ 3–20

Vibra troubleshooting......................................................................................................................................... 3–21

Display module troubleshooting ....................................................................................................................... 3–21

General instructions for display troubleshooting....................................................................................... 3–21

Display troubleshooting ................................................................................................................................ 3–24

Backlights and LED driver troubleshooting ...................................................................................................... 3–25

Bluetooth and FM radio ...................................................................................................................................... 3–26

Introduction to Bluetooth/FM Radio troubleshooting ............................................................................... 3–26

Bluetooth settings for Phoenix..................................................................................................................... 3–28

Bluetooth self tests in Phoenix..................................................................................................................... 3–29

Bluetooth troubleshooting ........................................................................................................................... 3–31

FM radio troubleshooting.............................................................................................................................. 3–31

Audio troubleshooting........................................................................................................................................ 3–33

Audio troubleshooting test instructions...................................................................................................... 3–33

Internal earpiece troubleshooting ............................................................................................................... 3–36

Internal microphone troubleshooting......................................................................................................... 3–37

IHF speakers troubleshooting....................................................................................................................... 3–38

External headset microphone troubleshooting.......................................................................................... 3–39

External headset earpiece troubleshooting ................................................................................................ 3–40

Acoustics troubleshooting............................................................................................................................. 3–41

Introduction to acoustics troubleshooting ............................................................................................ 3–41

Earpiece troubleshooting......................................................................................................................... 3–42

IHF troubleshooting.................................................................................................................................. 3–43

Microphone troubleshooting ................................................................................................................... 3–44

Baseband manual tuning guide......................................................................................................................... 3–45

Certificate restoring ....................................................................................................................................... 3–45

Energy management calibration.................................................................................................................. 3–46

List of Tables

Table 9 Display module troubleshooting cases................................................................................................ 3–22

Table 10 Pixel defects ......................................................................................................................................... 3–22

Table 11 Calibration value limits ....................................................................................................................... 3–46

List of Figures

Figure 8 Charging backup battery ..................................................................................................................... 3–10

Figure 9 Discharging backup battery ................................................................................................................ 3–10

RM-243

BB Troubleshooting and Manual Tuning Guide

Issue 1 COMPANY CONFIDENTIAL Page 3 –3