Baseband troubleshooting...........................................................................................................................................................6-5

Dead or jammed device troubleshooting...............................................................................................................................6-6

General power checking troubleshooting...............................................................................................................................6-7

Clocking troubleshooting.............................................................................................................................................................6-8

OMAP1710 troubleshooting.........................................................................................................................................................6-9

Charging troubleshooting..........................................................................................................................................................6-11

Battery current measuring fault troubleshooting.............................................................................................................6-12

Flash programming fault troubleshooting...........................................................................................................................6-13

CMT SDRAM memory troubleshooting....................................................................................................................................6-16

CMT NOR flash fault troubleshooting......................................................................................................................................6-17

Power key troubleshooting.......................................................................................................................................................6-18

USB interface troubleshooting.................................................................................................................................................6-19

SIM card troubleshooting...........................................................................................................................................................6-21

MMC troubleshooting...................................................................................................................................................................6-22

Keyboard troubleshooting.........................................................................................................................................................6-22

Display module troubleshooting.............................................................................................................................................6-24

General instructions for display troubleshooting........................................................................................................6-24

Display fault troubleshooting.............................................................................................................................................6-25

Display and keyboard backlight troubleshooting........................................................................................................6-26

ALS troubleshooting...............................................................................................................................................................6-27

LED driver troubleshooting..................................................................................................................................................6-30

Bluetooth troubleshooting........................................................................................................................................................6-30

Introduction to Bluetooth troubleshooting...................................................................................................................6-30

Bluetooth settings for Phoenix..........................................................................................................................................6-33

Bluetooth self tests in Phoenix...........................................................................................................................................6-34

Bluetooth BER failure troubleshooting............................................................................................................................6-36

BT audio failure troubleshooting......................................................................................................................................6-38

Audio troubleshooting................................................................................................................................................................6-38

Audio troubleshooting test instructions.........................................................................................................................6-38

Internal earpiece troubleshooting....................................................................................................................................6-43

Internal microphone troubleshooting.............................................................................................................................6-45

IHF troubleshooting...............................................................................................................................................................6-46

External microphone troubleshooting.............................................................................................................................6-47

External earpiece troubleshooting....................................................................................................................................6-48

Baseband manual tuning guide...............................................................................................................................................6-49

Energy management calibration.......................................................................................................................................6-49

List of Tables

Table 9 Display module troubleshooting cases..................................................................................................................6-24

Table 10 Pixel defects..................................................................................................................................................................6-25

Table 11 Calibration value limits.............................................................................................................................................6-49

List of Figures

Figure 42 Main troubleshooting tree........................................................................................................................................6-5

Figure 43 SYSCLK from J2801.......................................................................................................................................................6-9

Figure 44 SleepCLK from R211..................................................................................................................................................6-10

Figure 45 Flashing pic 1. Take single trig measurement for the rise of the BSI signal..........................................6-14

Figure 46 Flashing pic 2. Take single trig measurement for the rise of the BSI signal..........................................6-15

9241872 (Issue 1)

Table of Contents

Company Confidential

Nokia Customer Care

Page 6-3

Table of Contents