Nokia E62 Service Manual 06troub red

Nokia Customer Care

6 — BB Troubleshooting and

Manual Tuning Guide

Issue 1 COMPANY CONFIDENTIAL Page 6 –1

RM-88

Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

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RM-88 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Table of Contents

Introduction to baseband troubleshooting.........................................................................................................6–5

Baseband main troubleshooting..........................................................................................................................6–6

General power checking troubleshooting...........................................................................................................6–7

Battery current measuring fault troubleshooting..............................................................................................6–8

Flash programming fault troubleshooting..........................................................................................................6–9

Keyboard troubleshooting....................................................................................................................................6–9

USB interface troubleshooting............................................................................................................................6–11

Charging troubleshooting...................................................................................................................................6–12

Dead or jammed troubleshooting......................................................................................................................6–13

IrDA troubleshooting...........................................................................................................................................6–14

Vibra troubleshooting..........................................................................................................................................6–15

MiniSD troubleshooting.......................................................................................................................................6–16

SIM troubleshooting.............................................................................................................................................6–17

Display module troubleshooting........................................................................................................................6–18

General instructions for display troubleshooting........................................................................................6–18

Display fault troubleshooting........................................................................................................................6–20

Display and keyboard backlight troubleshooting........................................................................................6–21

EL backlight fault troubleshooting................................................................................................................6–24

ALS troubleshooting........................................................................................................................................6–25

LED driver troubleshooting............................................................................................................................6–28

Bluetooth troubleshooting..................................................................................................................................6–29

Introduction to Bluetooth troubleshooting.................................................................................................6–29

Bluetooth settings for Phoenix......................................................................................................................6–29

Bluetooth self tests in Phoenix......................................................................................................................6–30

Bluetooth BER failure troubleshooting.........................................................................................................6–32

BT audio failure troubleshooting..................................................................................................................6–33

Audio troubleshooting.........................................................................................................................................6–34

Audio troubleshooting test instructions......................................................................................................6–34

Internal earpiece troubleshooting................................................................................................................6–37

Internal microphone troubleshooting..........................................................................................................6–38

IHF troubleshooting........................................................................................................................................6–39

External microphone troubleshooting..........................................................................................................6–40

External earpiece troubleshooting................................................................................................................6–41

Introduction to acoustics troubleshooting..................................................................................................6–42

Earpiece troubleshooting...............................................................................................................................6–43

Acoustics IHF troubleshooting.......................................................................................................................6–44

Microphone troubleshooting.........................................................................................................................6–45

Baseband manual tuning guide.........................................................................................................................6–46

Energy management calibration...................................................................................................................6–46

List of Tables

Table 9 Display module troubleshooting cases................................................................................................6–18

Table 10 Pixel defects..........................................................................................................................................6–19

Table 11 Calibration value limits........................................................................................................................6–46

List of Figures

Figure 34 Flashing pic 1. Take single trig measurement for the rise of the BSI signal...................................6–9

Figure 35 Flashing pic 2. Take single trig measurement for the rise of the BSI signal...................................6–9

Issue 1 COMPANY CONFIDENTIAL Page 6 –3

RM-88

Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

Figure 36 Ambient Light Sensor Calibration window.......................................................................................6–26

Figure 37 BER test result......................................................................................................................................6–30

Figure 38 Bluetooth self tests in Phoenix..........................................................................................................6–31

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

connected...................................................................................................................................................6–35

Figure 40 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is

connected...................................................................................................................................................6–35

Figure 41 Single-ended output waveform of the HP_in_Ext_out loop when microphone is connected....

6–36

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RM-88 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Introduction to baseband troubleshooting

This chapter outlines the troubleshooting process for any baseband related problems reported from our customer. All troubleshooting by service technicians will be limited to those parts that are not under any shields.

Basic Troubleshooting for RM-88

The most likely problems that may be reported with RM-88 engine are listed below.

• Phone does not power up or gets jammed during startup.

• Abnormal current consumption.

• Flashing does not work.

• Charging does not work.

• Display does not work.

• Keypad does not work.

• Display backlight does not work.

• Keyboard EL dome sheet does light up.

• Mail indicator LED does not work.

• Phone gives SIM card error.

• Phone cannot access SD card.

• USB does not work.

• Audio (earpiece, microphone, and/or IHF) does not work.

• Audio headset does not work.

• Volume key does not work.

• Bluetooth does not work.

• IRDA does not work.

Issue 1 COMPANY CONFIDENTIAL Page 6 –5

RM-88

Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

Baseband main troubleshooting

Troubleshooting flow

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RM-88 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

General power checking troubleshooting

Troubleshooting flow

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Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

Battery current measuring fault troubleshooting

Troubleshooting flow

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RM-88 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Flash programming fault troubleshooting

Troubleshooting flow

Figure 34 Flashing pic 1. Take single trig measurement for the rise of the BSI signal.

Figure 35 Flashing pic 2. Take single trig measurement for the rise of the BSI signal.

Keyboard troubleshooting

Context

There are two possible failure modes in the keyboard module:

• One or more keys can be stuck, so that the key does not react when a keydome is pressed. This kind of failure is caused by mechanical reasons (dirt, corrosion).

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RM-88

Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

• Malfunction of several keys at the same time; this happens when one or more rows or columns are faulty (shortcut or open connection). For a more detailed description of the keyboard and keymatrix, see section Keyboard in System Module.

If the failure mode is not clear, start with the Keyboard Test in

Phoenix

Troubleshooting flow

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RM-88 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

USB interface troubleshooting

Troubleshooting flow

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Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

Charging troubleshooting

Troubleshooting flow

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RM-88 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Dead or jammed troubleshooting

Troubleshooting flow

Issue 1 COMPANY CONFIDENTIAL Page 6 –13

RM-88

Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

IrDA troubleshooting

Troubleshooting flow

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