Nokia 6670, 7610 Service Manual 06a rh51 bb trouble

Nokia Customer Care

RH-51/52, RH-67/68 Series Cellular Phones

6(a) - Baseband Troubleshooting

and Manual Tuning Guide

Company Confidential

RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care

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Company Confidential RH-51/52, RH-67/68

Nokia Customer Care 6(a) - Baseband Troubleshooting

Table of contents

Page No

Baseband troubleshooting .....................................................................................................................7

Dead or jammed phone ....................................................................................................................... 8

BB selftest tools ....................................................................................................................................9

Flash programming fault ..................................................................................................................10

General power checking ...................................................................................................................12

Test points for regulators ...............................................................................................................12

Baseband serial interface troubleshooting .................................................................................14

CBUS.....................................................................................................................................................14

FBUS .....................................................................................................................................................15

MBUS....................................................................................................................................................15

Charger interface troubleshooting ................................................................................................17

Energy management calibration ....................................................................................................18

Troubleshooting tips ..........................................................................................................................18

ADC-offset over limits.....................................................................................................................18

BSI gain over limits ..........................................................................................................................18

Vbatt offset and gain.......................................................................................................................18

VCHAR over limits ............................................................................................................................19

ICHAR over limits..............................................................................................................................19

ADC reading........................................................................................................................................19

Backup battery ....................................................................................................................................20

USB interface troubleshooting .......................................................................................................21

SIM card fault ......................................................................................................................................22

“Insert SIM Card” in device display although card is inserted ..............................................24

Keypad interface fault ......................................................................................................................25

Display fault .........................................................................................................................................27

Illumination fault (display/keyboard backlight) .........................................................................28

MMC interface fault ..........................................................................................................................30

Audio troubleshooting ......................................................................................................................31

Internal microphone ........................................................................................................................31

External microphone........................................................................................................................32

Internal earpiece...............................................................................................................................33

External earpiece ..............................................................................................................................34

IHF.........................................................................................................................................................35

Accessory detection troubleshooting ...........................................................................................36

Camera module troubleshooting ...................................................................................................38

Terms ....................................................................................................................................................38

Image taking condition effect on image quality .......................................................................39

Distance to target.............................................................................................................................39

Sharpness of picture edges............................................................................................................39

Geometrical distortion ....................................................................................................................39

Amount of light available...............................................................................................................40

Movement in bright light...............................................................................................................40

Temperature .......................................................................................................................................40

Display..................................................................................................................................................41

Basic rules of photography, especially shooting against light ............................................41

Flicker........................................................................................................................

Bright light outside of image view..............................................................................................42

...........................41

RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care

Image quality analysis ......................................................................................................................43

Possible faults in image quality....................................................................................................43

Testing for dust .................................................................................................................................43

Testing for sharpness.......................................................................................................................44

Bit errors ...............................................................................................................................................45

Camera hardware failure troubleshooting flow ........................................................................46

Bad image quality ..............................................................................................................................48

Baseband tuning operation .................................................................................................................49

Energy management calibration ....................................................................................................49

HW setup.............................................................................................................................................49

Phoenix SW setup.............................................................................................................................49

Calibration procedure with JBV-1 ...............................................................................................50

Company Confidential RH-51/52, RH-67/68

Nokia Customer Care 6(a) - Baseband Troubleshooting

List of figures

Page No

Fig 1 Main troubleshooting diagram....................................................................................................7

Fig 2 Phone is jammed or dead..............................................................................................................8

Fig 3 BB selftest items..............................................................................................................................9

Fig 4 Flashing troubleshooting 1........................................................................................................ 10

Fig 5 Flashing troubleshooting 2........................................................................................................ 11

Fig 6 General power check................................................................................................................... 13

Fig 7 CBUS test points...........................................................................................................................14

Fig 8 CBUS waveform ............................................................................................................................ 15

Fig 9 Flash interface layout (FBUS/MBUS test pads layout) ..................................................... 16

Fig 10 Not charging on display........................................................................................................... 17

Fig 11 Nothing happens when charging ..........................................................................................18

Fig 12 ADC reading view....................................................................................................................... 19

Fig 13 USB interface troubleshooting............................................................................................... 21

Fig 14 UPP_WD2 and UEME SIM connections............................................................................... 22

Fig 15 SIM power up waveform.......................................................................................................... 23

Fig 16 SIM answer to reset waveform.............................................................................................. 23

Fig 17 Insert SIM card troubleshooting............................................................................................ 24

Fig 18 Keypad troubleshooting 1 ....................................................................................................... 25

Fig 19 Keypad troubleshooting 2 ....................................................................................................... 26

Fig 20 Display troubleshooting ........................................................................................................... 27

Fig 21 Illumination troubleshooting 1.............................................................................................. 28

Fig 22 Illumination troubleshooting 2.............................................................................................. 29

Fig 23 MMC troubleshooting .............................................................................................................. 30

Fig 24 Internal microphone troubleshooting.................................................................................. 31

Fig 25 External microphone troubleshooting ................................................................................. 32

Fig 26 Internal earpiece troubleshooting......................................................................................... 33

Fig 27 External earpiece troubleshooting........................................................................................ 34

Fig 28 IHF troubleshooting................................................................................................................... 35

Fig 29 Accessory detection troubleshooting................................................................................... 36

Fig 30 Sharpness of picture is worse in edges than in center ................................................... 39

Fig 31 Shaking hands caused blurring of this image. ................................................................. 40

Fig 32 Near objects in image get skewed when shooting from a moving car...................... 40

Fig 33 Noisy image taken in +70deg............................................................................................... 41

Fig 34 Image which has been taken “against the light”. ......................................................... 41

Fig 35 Flicker in image of white uniform object illuminated by strong fluorescent light. 42

Fig 36 A lens reflection effect caused by sun shining above the scene.................................. 42

Fig 37 A good quality picture taken indoors...................................................................................42

Fig 38 Effects of dust in optical path ............................................................................................... 44

Fig 39 Camera HW troubleshooting.................................................................................................. 46

Fig 40 Hardware failure troubleshooting......................................................................................... 47

Fig 41 Bad image quality troubleshooting ......................................................................................48

Fig 42 EM calibration window ............................................................................................................50

RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care

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Company Confidential RH-51/52, RH-67/68

Nokia Customer Care 6(a) - Baseband Troubleshooting

Baseband troubleshooting

This document is intended to be a guide for localising and repairing electrical faults in the RH-51/52, RH-67/68 device. The fault repairing is divided into troubleshooting paths.

The following diagrams describe baseband troubleshooting.

Figure 1: Main troubleshooting diagram

RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care

Dead or jammed phone

Figure 2: Phone is jammed or dead

Company Confidential RH-51/52, RH-67/68

Nokia Customer Care 6(a) - Baseband Troubleshooting

BB selftest tools

“Selftest failed. Contact service.” on display.

This fault means that the software is able to run and thus the watchdog of UEME can be served. Selftest functions are executed when the phone is powered on, and if one or more selftest functions fail, the message “Selftest failed. Contact Service.” is shown on the display.

The MCU selftest case can be split into two categories: The ones that are executed during power up and the ones that are executed only with a PC connected. These tests and the items included are as follows:

Figure 3: BB selftest items

RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care

Flash programming fault

Following is the troubleshooting flow chart of flash programming.

“C101Boot timeoutl” written in the flow chart refers to the Phoenix error message that is shown when there are problems on phone flash programming using FPS-8.

Figure 4: Flashing troubleshooting 1

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Nokia Customer Care 6(a) - Baseband Troubleshooting

Figure 5: Flashing troubleshooting 2

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General power checking

Test points for regulators

VCOREA (LM2608/N230: 1.5V output) Test point: C231 near by BT shield

UEME internal regulators Test points: VIO 1.8V at C282 VANA 2.78V at C278 VFLASH1 2.78V at C279

VLCD (MAS9161/N233: 2.5V output) Test point: N233 pin or C240 near.

VIO

VFLASH1

VANA

Company Confidential RH-51/52, RH-67/68

Nokia Customer Care 6(a) - Baseband Troubleshooting

Figure 6: General power check

RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care

Baseband serial interface troubleshooting

CBUS

CBUS is a three-wire serial interface between the main baseband components. The bus consists of data, clock and bus_enable signals. In RH-51/52, RH-67/68 the bus is connected between UPP_WD2, UEME and ZOCUS. UPP_WD2 takes care of controlling the traffic on the bus.

If the interface is faulty from the UPP_WD2’s end, the phone does not boot properly as powering configurations do not work. Traffic on the bus can be monitored at the following test point and pins.

• CBusClk UPP_WD2 side of R106 pin

• CBusEN1X J378 Pad

• CBusDA J377 Pad

The pads and pin are shown below.

Figure 7: CBUS test points

Company Confidential RH-51/52, RH-67/68

Nokia Customer Care 6(a) - Baseband Troubleshooting

The CBUS traffic is shown in the figure below (read command to ZOCUS, LM3820, N130).

CBusCLk is connected to Ch1, CBusDa to CH2 and CBusEnx to Ch3.

Figure 8: CBUS waveform

FBUS

If you are able to get the phone to boot up and can reach Phoenix BB selftest it is possible to test the functionality of each component attached to CBus. Use:

• ST_UEM_CBUS_IF_TEST to test the UEME Cbus interface

• ST_ZOCUS_CBUS_IF_TEST to test the ZOCUS Cbus interface

If an error is found testing any of the above components you should replace or re-solder the failed component.

FBUS is a two-wire RX and TX interface between UPP_WD2 and flash/test interface. The bus goes through UEME, which adjusts the voltage levels to suit UPP_WD2. The interface voltage level on the phone flash/test pad pattern is 2.7V and on the UPP_WD2 end it is

1.8V.

The functionality of this interface should not affect the device boot into NORMAL, LOCAL or TEST modes. Phoenix tests can be performed through the MBUS interface in the case of a failure in the FBUS interface. Flashing is not possible if there is a problem in the FBUS interface.

Fbus signals can be seen at flashing test pads and the pad layout is shown in the following figure.

MBUS

MBUS is a two-wire RX and TX interface between UPP_WD2 and UEME. From UEME the interface continues to flash/test interface as one-wire interface. UEME adjusts the volt-

RH-51/52, RH-67/68 Company Confidential 6(a) - Baseband Troubleshooting Nokia Customer Care

age levels.

The interface voltage level on the phone flash/test pad pattern is 2.78V and on the UPP_WD2 end it is 1.8V. MBUS traffic between UPP_WD2 and UEME can be tested with Phoenix (ST_MBUS_RX_TX_LOOP_TEST). Flashing is not possible if there is a problem in MBUS. The MBUS signal can also be seen at flashing test pads and the pad layout is shown in the following figure.

Figure 9: Flash interface layout (FBUS/MBUS test pads layout)

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