Nokia 7280 Service Manual 06(a) RM14 bb trouble

Nokia Customer Care

6(a) - Baseband

6(a) - Baseband Troubleshooting and Manual Tuning

Troubleshooting

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

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2 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Table of Contents

Page No

Introduction .........................................................................................................5

General Failures.................................................................................................. 6

Phone is dead.................................................................................................... 6

Low battery operation time................................................................................. 8

Flash programming does not work..................................................................... 9

Charging failure................................................................................................ 10

Phone does not stay on, or phone is jammed.................................................. 11

Display information: “Contact Service”............................................................. 12

Function Failures ..............................................................................................14

Camera failure ................................................................................................. 14

Viewfinder working but no picture taken when pressing select-key ............... 16

FM-radio failure................................................................................................ 17

Infrared communication failure......................................................................... 18

SIM failure........................................................................................................ 19

Bluetooth failure............................................................................................... 20

Display failure .................................................................................................. 21

Audio failure..................................................................................................... 22

Uplink or downlink failure ...............................................................................22

Uplink missing audio signal ............................................................................23

Uplink weak audio signal ............................................................................... 24

Uplink distorted audio signal .......................................................................... 25

Uplink TDMA noise ........................................................................................26

Downlink missing audio signal .......................................................................27

Downlink weak audio signal ...........................................................................28

Downlink distorted audio signal ..................................................................... 29

Downlink noise in audio signal .......................................................................30

Downlink TDMA noise ....................................................................................31

Various noise problems ................................................................................. 32

BT audio errors ..............................................................................................33

Vibra errors ....................................................................................................34

Key failure........................................................................................................ 35

Power key failure ...........................................................................................35

UI module keys working .................................................................................36

Service Tool Concept for RM-14 Baseband Tunings..................................... 37

Service concept for RM-14 baseband tunings................................................. 38

Baseband Tunings ............................................................................................40

Energy management tuning............................................................................. 40

List of Figures

ISSUE 1 11/04 COMPANY CONFIDENTIAL 3

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Page No

Fig 1 Phone is dead..............................................................................................8

Fig 2 Low battery................................................................................................... 9

Fig 3 Flash programming does not work............................................................... 10

Fig 4 Troubleshooting charging............................................................................. 11

Fig 5 Phone does not stay on, or is jammed......................................................... 12

Fig 6 Display information: “Contact Service”......................................................... 14

Fig 7 No picture..................................................................................................... 15

Fig 8 No picture 2.................................................................................................. 16

Fig 9 Viewfinder working but no picture taken when pressing select-key............. 17

Fig 10 Infrared communication failure................................................................... 19

Fig 11 SIM failure..................................................................................................20

Fig 12 Display failure............................................................................................. 22

Fig 13 Uplink or downlink failure ........................................................................... 23

Fig 14 Uplink missing audio signal........................................................................ 24

Fig 15 Uplink weak audio signal............................................................................ 25

Fig 16 Uplink distorted audio signal ......................................................................26

Fig 17 Uplink TDMA noise .................................................................................... 27

Fig 18 Downlink missing audio signal ...................................................................28

Fig 19 Downlink weak audio signal.......................................................................29

Fig 20 Downlink distorted audio signal.................................................................. 30

Fig 21 Downlink noise in audio signal...................................................................31

Fig 22 Downlink TDMA noise................................................................................ 32

Fig 23 Various noise problems.............................................................................. 33

Fig 24 BT audio errors ..........................................................................................34

Fig 25 Vibra errors ................................................................................................35

Fig 26 Power key failure........................................................................................36

Fig 27 UI module keys working.............................................................................37

4 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Introduction

This document describes in overview the different hardware error possibilities for the RM-14 phone.

Not every possible hardware error is described in this document, but only those possible to correct.

Note! Most components are under shielding and therefore not changeable.

ISSUE 1 11/04 COMPANY CONFIDENTIAL 5

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

General Failures

■ Phone is dead

The phone doesn’t use any current at all when the supply is connected and/or power key is pressed. It is assumed that the voltage supplied is 3,9Vdc. UEME will prevent any functionality at battery/supply levels below 2,9Vdc and the software will shut the phone down at 3,1Vdc.

6 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Figure 1:Phone is dead

Phone is dead

Yes

Phone shortcircuit DC power

*)

Check RF-PA

Yes

No

Check SIM Switch

Ok

Check VBATT on C104 ~3.9V

Measure voltages on both sides

No

of pin 12 of x1200 when power key is pressed. Should be ~0V.

Yes

*)

Measure voltage on L260, L261, L262, L263, L264, L265 and L206.

No

Should be ~3.9V.

No

*)

Sleep clock on J401:~32,768kHz, 1,8Vpp

*)

Measure voltage on PURX=1.8Vdc onJ404 or N6031 ~1sec after power key is pressed

*)

Yes

Measure voltage on VR3=2,78Vdc on C295pin1

.

*)

Yes

Verify that system clock is @~26MHz,

min 300mVACpp on C422 pin2 towards

D400(TIKU) with regular probe Cin ~10

-13pF/10M

Nok

Replace SIMgate

Check UI flex and PWB

*)

Failure in VBAT line: Check X100, L260, L261, L262 L263, L264, L265, L206, C260 C261, C262, C283 and PWB

*)

No

Check B200, C209,C210, D200 and PWB

No

*)

Check D200 and PWB

*)

No

Check D200, C295 and PWB

*)

No

Check C422, R420, N500 (Helgo), G501 (26MHzXTAL) and PWB

*)

Yes

Note! The boxes marked with *) are not serviceable parts.

Check D400 (TIKU) and D401

ISSUE 1 11/04 COMPANY CONFIDENTIAL 7

The boxes inside the blue lines are not changeable or measurable!

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

■ Low battery operation time

Figure 2:Low battery

8 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14

1

Baseband Troubleshooting and Manual Tuning Nokia Customer Care

■ Flash programming does not work

The flash programming on RM-14 boards is possible via the pads on the PWB and through the SIM slide.

In flash programming error cases the flash prommer (via Phoenix or Darium) can give some information about the fault. The fault information messages could be:

• Phone doesn't set Flashbus TXD line high after VCC is switch on.

• External RAM test failed.

These errors are some of the most common errors and based on this, a fault finding diagram for flash programming is shown below. Various errors can appear from the prommer when flashing the phone - not all of them can be directly linked to the HW or phone.

Because of the use of uBGA components, it is not possible to verify on the dia gram, if there is a short circuit in control and address/data lines on TIKUEDGE, NOR flash, NAND flash or SDRAM.

Figure 3:Flash programming does not work

*)

Re-solder \ Replace componet

)

*

Fix the connections if possible. Else scarp the phone.

scrap

Note!

The boxes marked with *) are not serviceable parts!

Note! The boxes inside the blue lines are not changeable or measurable!

*)

No

Check SDRAM orientation and placement. Placement OK ?

*)

No

Check PWB (if possible) and power lines. Connecti ons OK ?

Flash programming does not work

*)

Prommer information is: External RAM test failed. (C108)

Yes

*)

Flash again

Yes

*)

Replace the SDRAM

Prommer information is:

does

Phone dose not set Flashbus TXD line hi gh after VCC is switched on.

Yes

J39

Check J386 - resistor R397/R396 Connecti ons ok ?

*)

Try reading MCU ID with Phoenix Reading OK ?

*)

Try reading flash ID with Phoenix Reading OK ?

Yes

Flash again

No

Re-solder \ Replace componet

*)

No

Replace UEME or TIKU

*)

No

Replace NOR or NAND flash

ISSUE 1 11/04 COMPANY CONFIDENTIAL 9

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

■ Charging failure

Figure 4:Troubleshooting charging

Charging fails and no current

drawn from 'charger'

*)

Yes

Measure Vchar voltage on V101.

Is it > 3,0V?

Yes

Recalibrate charger circuitry and

retest. Did it work ?

Yes

END

Display information when charger

connected: "Not charging"

*) is SIM holder inserted?

NO

Check system connector

X101, F100, C121, V101, C102,

Swap the phone,

Check:

X1200

C103 and PWB

D200 (UEME) is faultyNO

C107

Yes

Recalibrate charger circuitry and

retest. Did it work ?

No

BTEMP=~68Ohm @roomtemperat-

Verify through Phoenix that BSI =

ure (~25)

~75kOhm (BL-5C) and BTEMP =

~47kOhm @ roomtemperature

(~25C)

Yes

Measure voltage on R200 towards

D200. Should be the same as

Vbat voltage

Yes

Phone should work. If not change

whole engine board

ENDYes

*)

No

Check:

BSI: Battery (BL-5C), C100, R203,

BSI: R102, C100, R203, Q104, pwb, SIM SW, R203 and R206

BTEMP: R100, C101, R202, pwb

BTEMP:R100. C101, R202, pwb and R207

Check:

pwb and R206

and R207

*)

No

Note! The boxes marked with *) are not serviceable parts!

R200, D200 (UEME) and pwb

The boxes inside the blue lines are not changeable or measurable!

Check:

10 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

■ Phone does not stay on, or phone is jammed

If the MCU doesn’t service the watchdog register within the UEME, the operations watchdog will run out after approximately 32 seconds. It is not possible to measure this service routine.

Figure 5:Phone does not stay on, or is jammed

Phone does not stay on or is jammed

Yes

Verify that system clock is @ ~26MHz, min300mVaCpp on C422 pin2 towards D400 (TIKU) with regular probe Cin~10-13pF/ 10M

Yes

Measure voltage on PURX=

1.8Vdc on N6031 ~1sec after the power key is pressed.

Yes

UI functionality and keys react to pressure

Yes

Can extraction of SIM holder switch off the phone.

No

Check C422, R420, N500 (Helgo), G501 (26MHzXTAL) and PWB.

Swap the phone

Check Z300, UI board, keymat, lightguide, and PWB.

Yes

Is everything working until phone shuts down after ~32sec

No

Replace SIM gate

ISSUE 1 11/04 COMPANY CONFIDENTIAL 11

No

Retest and if phone still doesn’t work change whole engine board.

Yes

Swap the phone

Note!

The boxes inside the blue lines are not changeable or measurable!

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

■ Display information: “Contact Service”

When this error appears in the display it means that one or more of the internal baseband test s has failed. The baseband tests (self tests) are performed each time the phone is powered on. The self tests are divided into those performed while powering up (S t art up tests) and the ones that can be executed with a PC using Phoenix (Runtime tests). The following S tart-up tests are performed during power up:

UEM CBUS IF TEST SLEEP X LOOP TEST AUX DA LOOP TEST EAR DATA LOOP TEST TX IDP LOOP TEST TX IQ DP LOOP TEST SIM CLK LOOP TEST SIM IO CTRL LOOP TEST MBUS RX TX LOOP TEST BACKUP BATT TEST RADIO TEST WARRANTY TEST PA TEMP TEST SIM LOCK TEST PPM VALIDITY TEST KEYBOARD STUCK TEST LPRF IF TEST FLASH CHECKSUM TEST CAMERA IF TEST EXT RAM DATA BUS TEST EXT RAM ADDR BUS TEST NAND FLASH ID TEST BT WAKEUP TEST IR IF_TEST

If all these self tests are passed, the phone will start up. From Phoenix it’s possible to run all the self tests and the additional “Runtime test”. The test

cases can be seen below.

12 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Figure 6:Display information: “Contact Service”

ISSUE 1 11/04 COMPANY CONFIDENTIAL 13

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Function Failures

■ Camera failure

Figure 7:No picture

No picture

correctly?

present at

*)

26 Mhz

present at

Module placed

1.8V

L901

Z901?

2.7V

L901

Z900?

clock

R900?

Remove

No No

module

Yes

Check for

short circuit of

No No

C903, C902

or C291

Yes

Check for

short circuit of

No No

C901, C900

or C289

Yes

*)

Check for

No No

short circuit of

905

R900 or R904

Yes

Broken

springs etc.

X302

in X900?

Yes

X302

Change X900

Short

circuits?

Yes

Replace

component

Short

circuits?

Yes

Replace

component

Short

circuits?

Yes

Replace

component

Reposition module

UEME or PWB

FAILURE

UEME or PWB

FAILURE

PWB or TIKU

FAILURE

1.8V

present at

C904

Yes

Check for

No No

short circuit of

C904

Short

circuit?

Yes

Replace

component

PWB or TIKU

FAILURE

*) Most test points are not accessible unless shielding cans are cut open. This must ONLY be done by the Return Analysis technicians and for analysis only

Continue on

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Figure 8:No picture 2

*)

present at

*)

present at

*)

present at

Data

R913?

Clock R906

Clock

R902?

*)

Check for

No No

short circuit of

R913

Yes

*)

Check for

No No

short circuit of

R906

Yes

*)

Check for

No No

short circuit of

R902

Yes

Short

circuits

Yes

Replace

component

Short

circuit?

Yes

Replace

component

Short

circuit?

Yes

Replace

component

CAMERA or PWB

FAILURE

CAMERA or PWB

FAILURE

TIKU or PWB

FAILURE

*)

Data

present at

R901?

*)

Check for

No No

short circuit of

R901

Short

circuit?

Yes

Replace

component

TIKU or PWB

FAILURE

*) Most test points are not accessible unless

shielding cans are cut open. This must ONLY be done

by the Return Analysis technicians and for analysis only

ISSUE 1 11/04 COMPANY CONFIDENTIAL 15

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Viewfinder working but no picture taken when pressing select-key

Figure 9:Viewfinder working but no picture taken when pressing select-key

Viewfinder working but no picture

taken when pressing select-key

Select key

functional?

Yes

*)

R906 = 104MHz

clock when

pressing select?

Reflash phone

Yes

No

Check

rotator flex and

keyboard with

Z300

Phoenix

Z300 and

X300 and

Flex OK?

X301 OK?

Yes

UI- or main

PWB

FAILURE

No

*)

No

Check for

short circuit of

R906

*) Most test points are not accessible unless

shielding cans are cut open. This must ONLY be done

by the Return Analysis technicians and for analysis only

Short

circuit?

Yes

Replace

component

No

Replace

component

CAMERA FAILURE

16 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

■ FM-radio failure

The FM-radio troubleshooting guide is placed in the RF section.

ISSUE 1 11/04 COMPANY CONFIDENTIAL 17

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

■ Infrared communication failure

Figure 10:Infrared communication failure

IrDA Failure

Yes

Measure

VBAT at

C350 = 3,7-

4,2V ?

Yes

Measure VFLASH1 at C351=2,78V

Yes

Measure VIO

at

C352=1,80V

C353=1,80V

No

Defect PWB

Replace

Defect PWB

D200

Replace

Defect PWB

D200

Yes

Measure activity TXD

on N350 pin3

?

Yes

Replace N350

18 COMPANY CONFIDENTIAL ISSUE 1 11/04

No

Replace

Defect PWB

D400

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

■ SIM failure

The hardware of the SIM interface from the UEME (D200) to the SIM connector (X386) can be tested without a SIM card. When the power is switched on, the phone first checks for a 1,8V SIM card and then a 3V SIM card. The phone will try this four times, whereafter it will display "Insert SIM card".

The error ”SIM card rejected” means that the ATR message received from the SIM card is corrupted, e.g. data signal levels are wrong. The first data is always ATR and it is sent from card to phone.

Figure 11:SIM failure

SIM Fault

Is used sim a

3,0V or 1,8V

card ?

Yes

Measure

VSIM at

X386. Is it 3V

or 1,8V?

Yes

Check SIM power-up

sequence

(picture of 3V sim card)

Should be as

No

Replace used

test sim-card

Check SIM

No No

reader X386

Is not as

picture

Measure

VSIM at

C390. Is it

3V?

Yes

Replace R388

UEME FAILURE

VSIM

Reset

Clock

Data

ISSUE 1 11/04 COMPANY CONFIDENTIAL 19

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

■ Bluetooth failure

The Bluetooth troubleshooting guide is placed in the RF section.

20 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

■ Display failure

Figure 12:Display failure

Display fails

Yes

Is display working

Yes

NO

Yes

Change display

module

Is display

working?

NO

Measure Vflash1 @

L302 towards X302 (display connector).

Should be ~2,78Vdc

Yes

Measure VIO @ L301 towards X302 (display connector). Should be

~1,8Vdc

Yes

Are LED's working?

Measure Vout on

C304 = ~13,5V

NO

*)

Check:

X302, C311, L302, C310,

D200 (UEME) and PWB

*)

Check:

X302, C309, L301, C308,

R307, D200 (UEME) and

PWB

Check:

N300, C304, R308, R312,

R306, X302, R305, X300, pwb

and UI board

End

Yes

Measure RESX on

X302 - pin 24. Should

be ~1,8V.

Yes

Phone should work. If

not change engine

board.

*)

NO

Check:

D400 (TIKU) and pwb

*) Some of the components

under shield, not changeable

or measurable parts.

ISSUE 1 11/04 COMPANY CONFIDENTIAL 21

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

■ Audio failure

Uplink or downlink failure

Figure 13:Uplink or downlink failure

Start

Is there an

audio

signal?

Yes

Is audio

level

sufficient?

Yes

Is audio

signal

undistorted?

Yes

Is TDMA

noise

inaudible

uplink

No

Go to "Uplink

missing audio

signal"

Go to "Uplink

weak audio

signal

Go to "Uplink

distorted

audio signal"

Go to "Uplink TDMA noise"

Is problem

uplink or downlink

Is there an

audio

signal?

Yes

Is audio

level

sufficient?

Yes

Is audio

signal

undistorted?

Yes

Is audio

signal free

of noise

downlink

No

Go to

"Downlink

audio signal

missing"

Go to

"Downlink

audio signal

weak"

Go to

"Downlink

audio signal

distorted"

Go to

"Downlink

audio signal

noise"

Yes

Is there no

acoustical

feedback

No

Go to

"Acoustical

feedback"

Yes

Is TDMA

noise

inaudible

Yes

Is there no

acoustical

feedback

Yes

Click noise, audio

signal too loud or

bad picture/

sound

synchronization

No

Go to

"Downlink

TDMA noise"

Go to

"Acoustical

feedback"

Software

error or bad

TIKU

22 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Uplink missing audio signal

Figure 14:Uplink missing audio signal

Start

No

Is mute

deactivated?

Is problem

present both with

hand portable

and accessory?

Is problem

solved when

using

accessory?

Yes

Measure

mic. bias. Is

it close to

2.1 V ?

Yes

No

Deactive

mute in menu

Accessory is

defective

*)

Are any of the bias

No

components defective ? (check R153, C151 and

R154

R151 for hand portable

and R156, C158, R166,

C159 and L152 for

*)

No

Replace

UEME

accessory)

Yes

Replace defective parts. Is bias close to

2.1 V ?

No

*) Some of the components

under shield, not changeable

Yes

Are microphone

contacts and

PWB pads ok ?

Yes

Replace

microphone

or measurable parts.

No

Clean

contacts and

pads

ISSUE 1 11/04 COMPANY CONFIDENTIAL 23

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Uplink weak audio signal

Figure 15:Uplink weak audio signal

Start

Is

microphone

opening

clean?

Yes

Measure bias. Is it

close to

2.1V?

Yes

No

*)

Clean

opening

Are any of the bias

components defective (check R153, C151 and

R154

R151)

Yes

Replace

defective parts.

Is bias close to

2.1 V

Yes

No

*)

Replace

UEME

No

Are microphone

contacts and

PWB pads ok?

Yes

*)

Are any of the

components L151,

R154, C154, C153,R155,

C165, R155, R162

or R157 missing or

R162 or R157 damaged

damaged?

or missing?

Replace

microphone

Clean contacts and pads. If

No

tracks are badly corroded it

may not be possible to

repair phone

*) Some of the components

under shield, not changeable

or measurable parts.

24 COMPANY CONFIDENTIAL ISSUE 1 11/04

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Uplink distorted audio signal

Figure 16:Uplink distorted audio signal

Start

Is there no

distortion when

using

accessory?

Yes

Measure bias. Is it

close to

2.1V?

Yes

No

*)

Are any of the bias

defective (check R153, C151 and

defective parts. Is bias close to

Defect

accessory

components

R154

R151)

Replace

2.1 V

*)

No

Replace

UEME

No

Yes

Are microphone

contacts and

PWB pads ok

Yes

Replace

microphone

Clean contacts and pads. If

No

tracks are badly corroded it

may not be possible to

repair phone

*) Some of the components

under shield, not changeable

or measurable parts.

ISSUE 1 11/04 COMPANY CONFIDENTIAL 25

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Uplink TDMA noise

Figure 17:Uplink TDMA noise

Start

Is there TDMA noise both in hand portable and when

using accessory?

Yes

Replace

microphone. Is

there still noise?

Yes

Check for loose,

missing or damaged

shielding cans

No

Is there only

noise in hand

portable

mode?

Yes

Defective

microphone

No

Defective

accessory

26 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Downlink missing audio signal

Figure 18:Downlink missing audio signal

Start

Is problem present

both in hand

portable mode and

when using FM

radio/music player/

MIDI?

Yes

Is problem

present both in

earpiece, IHF

and with

accessory?

Yes

No

earpiece, IHF or

associated with

Is problem

related to

accessory?

Is problem

FM radio or

music player/

MIDI?

FM

radio

Is external

antenna

working?

Yes

No

IHF

Music

player/MIDI

Defective music file

Accessory is

not detected

or is defective

FM module is

defective

IHF is defective.

Check IHF speaker

and connections.

Check L155, L156

and C162.

Check UEME.

Earpiec

e

Accessory

Earpiece is defective. Check IHF speaker and

connections. Check

L153 and C164.

L155, L156 and

Check UEME.

C162.

Check UEME.

Accessory is

defective

Software or

UEME is defective

ISSUE 1 11/04 COMPANY CONFIDENTIAL 27

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Downlink weak audio signal

Figure 19:Downlink weak audio signal

Start

Is problem

present both in

earpiece and

IHF?

Yes

No

Is problem

related to

earpiece or IHF?

Earpiec

e

Is IHF

opening

clogged?

No

IHF

Is IHF

opening

clogged?

Yes

IHF is defective.

Check UEME.

Clean

opening

Check IHF speaker and connections.

Clean

earpiece

opening

IHF

No

Earpiece is

defective. Check

earpiece speaker

and connections.

Check UEME.

Software or

UEME is defective

28 COMPANY CONFIDENTIAL ISSUE 1 11/04

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Downlink distorted audio signal

Figure 20:Downlink distorted audio signal

Start

Is problem

present both in

earpiece and

IHF?

Yes

No

Is problem

related to

earpiece or IHF?

Earpiec

e

IHF

IHF is defective.

Check IHF speaker and connections.

Check UEME.

Earpiece is

defective. Check

earpiece speaker

and connections.

Check UEME.

Software error.

Bad music files.

Defective FM

module.

Defective UEME

ISSUE 1 11/04 COMPANY CONFIDENTIAL 29

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Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Downlink noise in audio signal

Figure 21:Downlink noise in audio signal

Start

Is noise

electrical or

mechanical?

Electrical

Is noise

associated with

earpiece/IHF

(hand portable

mode)?

No

Is noise

associated with

FM tuner or with

Music Player?

Mechanical

Yes

Music Player

Loose speaker or

other component inside telephone

No

Does error occur both in earpiece and

IHF?

Yes

Defective

speaker.

Software error.

Defective or badly

tuned antenna.

Bad music file

FM radio

Is noise

associated with

accessory?

Yes

No

Defective FM

module

Defective

accessory. Repair

or Replace

accessory

30 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Downlink TDMA noise

Figure 22:Downlink TDMA noise

Start

Is there TDMA noise both in hand portable and when

using accessory?

Yes

Replace battery.

Is there still

noise?

Yes

No

Is there only

noise in hand

portable

mode?

Yes

Defective

battery.

Check for loose,

missing or damaged

shielding cans.

Mistuned antenna.

Missing/bad

components.

Check that problem is

not related to uplink

TDMA noise.

No

Defective

accessory

ISSUE 1 11/04 COMPANY CONFIDENTIAL 31

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Various noise problems

Figure 23:Various noise problems

Start

Sound

level too

loud?

No

Click noise

No

Picture/sound

synchronisation

Yes

Software

error

Software

error

Bad TIKU

32 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

BT audio errors

Figure 24:BT audio errors

Start

Accessory

working?

Yes

Software working?

Yes

Defective BT

module or antenna.

Defective TIKU

No

Replace or

repair

accessory

Flash with

new software

ISSUE 1 11/04 COMPANY CONFIDENTIAL 33

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Vibra errors

Figure 25:Vibra errors

Start

Wrong setting or

software error.

Contact problem.

No

Is there any

vibration?

Yes

Mechanical problem

- counterweight is blocked

Defective or missing

vibra.

Defective UEME.

Is there

sufficient

vibration?

Yes

Vibra is

constantly

switched

on?

No

Intermittent

vibration?

No

Acoustical

noise?

No

Yes

Software error

Contact problem.

Defective vibra.

Defective UEME.

Software error.

Defective UEME.

Short circuit.

Yes

Bad connection.

Defective vibra.

Mechanical problem

- counterweight hits D-cover/PWB. Loose parts in

phone.

34 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

■ Key failure

Power key failure

Figure 26:Power key failure

Keypad fault

Power key Ok

?

No

Measure voltage

from S323. Is it

X300 pin12 from

high?

UI board. Is it high?.

Yes

Measure voltage

from UI board when

from S323 when

pressed. Is it high?

No

Yes

Check

Check Z300

R302,C302,S323

and line. If Okay

UEME failure

Check UI board.

Check S323. Is it

Is it ok?

Okay?

No

Change UI board

Change S323Phone is jammed

Yes

Phone is dead

ISSUE 1 11/04 COMPANY CONFIDENTIAL 35

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

UI module keys working

Figure 27:UI module keys working

Try to change UI

UI-module

keys working

No

Try to change UI

PWB. Are the

Flex. Are the keys

keys working now

working now?

?

No

Z300

Check X300 & X301

(Soldering and spring

contacts). Is it okay?

Yes

When keypad is pressed, are the LEDS lit?

Measure Row0-Row4,

UP, DOWN and SELECT

lines from X301. Are

voltage levels ~1,8 V?

No

Yes

No

Retest UI module

Change X300 and/

Change Z300

or X301

No

Yes

End

Illumination fault

Yes

Measure SleepX

signal (J403), when key i s

pressed. Is voltage level

~1,8 V?

Yes

When keypad is

pressed, are the

LED's lit?

No

Check lines Row0-Row4, UP, DOWN,and SELECT

from X300.

If Ok, change Z300 and/or

Z301. If it still fails, change

TikuEdge

No

End

Illumination fault

36 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Service Tool Concept for RM-14 Baseband Tunings

EM calibrations should be carried out in JBV-1 Docking Station equipped with DA-40 Docking St a t ion Ad apter

Note: RF tunings must be carried out in MJ-12 module jig. Power to JBV-1 should be supplied from an external DC power supply, not JBV-1 input voltages:

• Maximum + 16 VDC

• Nominal input for RF tunings is +12 V DC

FPS-8 prommer

ISSUE 1 11/04 COMPANY CONFIDENTIAL 37

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

■ Service concept for RM-14 baseband tunings

Table 1:

Item Type Description Product code

1 JBV-1 Docking Station 0770298 2 DA-40 Docking station

adapter 4 CA-5S DC-DC cable 0730283 5 XRF-1 RF antenna cable 0730085 6 PCS-1 DC power cable 0730012 7 DAU-9S Service MBUS cable 0730108 8 PKD-1 Software protection

key 9 Phoenix service SW 8408031

38 COMPANY CONFIDENTIAL ISSUE 1 11/04

0780380

0750018

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Table 1:

Item Type Description Product code

9 CD-ROM Phoenix service SW 0774286

ISSUE 1 11/04 COMPANY CONFIDENTIAL 39

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

Baseband Tunings

■ Energy management tuning

External power supply is needed. EM Calibration is used for calibrating Battery and Charger settings of the phone. Preparation for EM Calibration:

• Connect DC Cable CA-5S between JBV-1 and Vin of Phone for Charger calibration.

• Connect 12…15 V from Power Supply to JBV-1.

NOTE! Check that connection is F-BUS (doesn't work with M-BUS!).

Select Tuning => Energy Management Calibration

Energy Management values to be calibrated are checked. Select “Read from Phone” to show current values in the phone memory and to check that the

communication with the phone works.

40 COMPANY CONFIDENTIAL ISSUE 1 11/04

RM-14 Baseband Troubleshooting and Manual Tuning Nokia Customer Care

Select “Calibrate” to run selected calibrations.

Limits for Energy Management Calibration: Min Max ADC gain27000 28000

ADC offset-50 50 BSI gain930 1100 VBAT gain1000011000 VBAT offset24002600 VCHAR5800062000 ICHAR35004600

If values shown are within limits, select “Save To Phone” to save values to phone.

NOTE! Only values of checked tunings (Battery size, Battery T emperature etc…) will be saved.

Close the “Energy Management Calibration” dialog to end tuning.

ISSUE 1 11/04 COMPANY CONFIDENTIAL 41

RM-14

Nokia Customer Care Baseband Troubleshooting and Manual Tuning

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42 COMPANY CONFIDENTIAL ISSUE 1 11/04

Nokia 7280 Service Manual 06(a) RM14 bb trouble

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

General Failures

■ Phone is dead

■ Low battery operation time

Flash programming does not work

■ Charging failure

■ Phone does not stay on, or phone is jammed

■ Display information: “Contact Service”

Function Failures

■ Camera failure

Viewfinder working but no picture taken when pressing select-key

■ FM-radio failure

■ Infrared communication failure

■ SIM failure

■ Bluetooth failure

■ Display failure

■ Audio failure

Uplink or downlink failure

Uplink missing audio signal

Uplink weak audio signal

Uplink distorted audio signal

Uplink TDMA noise

Downlink missing audio signal

Downlink weak audio signal

Downlink distorted audio signal

Downlink noise in audio signal

Downlink TDMA noise

Various noise problems

BT audio errors

Vibra errors

■ Key failure

Power key failure

UI module keys working

Service Tool Concept for RM-14 Baseband Tunings

■ Service concept for RM-14 baseband tunings

Baseband Tunings

■ Energy management tuning