Nokia N70 Service Manual 6 bb troubleshooting and manual tuning guide

RM-84/99

Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

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RM-84/99 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Table of Contents

Baseband troubleshooting...........................................................................................................................................................1–5

Dead or jammed device troubleshooting...............................................................................................................................1–6

General power checking troubleshooting...............................................................................................................................1–7

Clocking troubleshooting.............................................................................................................................................................1–8

OMAP1710 troubleshooting.........................................................................................................................................................1–9

Charging troubleshooting..........................................................................................................................................................1–11

Battery current measuring fault troubleshooting.............................................................................................................1–12

Flash programming fault troubleshooting...........................................................................................................................1–13

CMT SDRAM memory troubleshooting....................................................................................................................................1–16

CMT NOR flash fault troubleshooting......................................................................................................................................1–17

OMAP1710 memory troubleshooting.....................................................................................................................................1–18

Power key troubleshooting.......................................................................................................................................................1–20

USB interface troubleshooting.................................................................................................................................................1–21

SIM card troubleshooting...........................................................................................................................................................1–23

MMC troubleshooting...................................................................................................................................................................1–25

Keyboard troubleshooting.........................................................................................................................................................1–26

Slider switch troubleshooting..................................................................................................................................................1–28

FM radio troubleshooting..........................................................................................................................................................1–29

Certificate restoring for BB5.0 products................................................................................................................................1–29

Display module troubleshooting.............................................................................................................................................1–35

General instructions for display troubleshooting........................................................................................................1–35

Display fault troubleshooting.............................................................................................................................................1–37

Display and keyboard backlight troubleshooting........................................................................................................1–38

ALS troubleshooting...............................................................................................................................................................1–39

LED driver troubleshooting..................................................................................................................................................1–41

Bluetooth troubleshooting........................................................................................................................................................1–42

Introduction to Bluetooth troubleshooting...................................................................................................................1–42

Bluetooth settings for Phoenix..........................................................................................................................................1–44

Bluetooth self tests in Phoenix...........................................................................................................................................1–44

Bluetooth troubleshooting..................................................................................................................................................1–46

Bluetooth BER failure troubleshooting............................................................................................................................1–47

BT audio failure troubleshooting......................................................................................................................................1–49

Audio troubleshooting................................................................................................................................................................1–49

Audio troubleshooting test instructions.........................................................................................................................1–49

Internal earpiece troubleshooting....................................................................................................................................1–54

Internal microphone troubleshooting.............................................................................................................................1–55

IHF troubleshooting...............................................................................................................................................................1–56

External microphone troubleshooting.............................................................................................................................1–57

External earpiece troubleshooting....................................................................................................................................1–58

Vibra troubleshooting...........................................................................................................................................................1–59

Baseband manual tuning guide...............................................................................................................................................1–60

Energy management calibration.......................................................................................................................................1–60

List of Tables

Table 1 Display module troubleshooting cases..................................................................................................................1–35

Table 2 Pixel defects....................................................................................................................................................................1–36

Table 3 Calibration value limits................................................................................................................................................1–60

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RM-84/99

Nokia Customer Care BB Troubleshooting and Manual Tuning Guide

List of Figures

Figure 1 Main troubleshooting tree..........................................................................................................................................1–5

Figure 2 SysCLK from C7528 & C7531........................................................................................................................................1–9

Figure 3 SleepCLK from R7558..................................................................................................................................................1–10

Figure 4 Flash programming fault troubleshooting 1/2..................................................................................................1–13

Figure 5 Flash programming fault troubleshooting 2/2..................................................................................................1–14

Figure 6 Flashing pic 1. Take single trig measurement for the rise of the BSI signal.............................................1–15

Figure 7 Flashing pic 2. Take single trig measurement for the rise of the BSI signal.............................................1–15

Figure 8 CMT SDRAM CLK from pin J2806...............................................................................................................................1–16

Figure 9 NOR CLK from J2813....................................................................................................................................................1–17

Figure 10 COMBO NAND in boot pic 1. ...................................................................................................................................1–19

Figure 11 USB 1: D-TXD (POP-PORT pin6) and D+RXD (POP-PORT pin7) voltage levels when USB connected..1–21 Figure 12 USB 2: Take single triggered measurement on the rising edge of the Helen usb0_txen (J4813) line.1–22

Figure 13 SIM interface signals.................................................................................................................................................1–23

Figure 14 MMC card initialization............................................................................................................................................1–25

Figure 15 Data transfer...............................................................................................................................................................1–26

Figure 16 Ambient Light Sensor Calibration window.......................................................................................................1–39

Figure 17 Phoenix settings for Bluetooth troubleshooting............................................................................................1–44

Figure 18 Bluetooth self tests in Phoenix.............................................................................................................................1–45

Figure 19 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected.1–52 Figure 20 Differential output waveform of the Ext_in_IHF_out out loop measurement when speaker is

connected........................................................................................................................................................................................1–53

Figure 21 Single-ended output waveform of the HP_in_Ext_out loop when microphone is connected...........1–53

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RM-84/99 BB Troubleshooting and Manual Tuning Guide Nokia Customer Care

Baseband troubleshooting

Context

This section is intended to be a guide for localising and repairing electrical faults. The fault repairing is divided into troubleshooting paths. The following main troubleshooting tree describes the different baseband troubleshooting paths to be followed in fault situations.

Figure 1 Main troubleshooting tree

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