Nokia 6510 Service Manual 9 NPM9TROUBLE

PAMS Technical Documentation

NPM–9 Series Transceivers

Troubleshooting

Instructions

Issue 1 02/2002  Nokia Corporation

NPM–9
Troubleshooting Instructions

PAMS Technical Documentation

CONTENTS

Transceiver Troubleshooting 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Baseband Troubleshooting 3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

PWB Test Points 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Measurement Points 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting steps 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Main troubleshooting tree 5. . . . . . . . . . . . . . . . . . . . . . . . . . .

Phone is dead 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flash programming doesn’t work 8. . . . . . . . . . . . . . . . . . . . .

Phone is jammed 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Charging fault 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SIM card is out of order (insert SIM card) 13. . . . . . . . . . . . . .

Audio fault 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display fault 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keypad fault 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF Troubleshooting 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF Key Components 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PWB Test Points 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter troubleshooting diagram 28. . . . . . . . . . . . . . . . . .

Transmitter signals 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver troubleshooting diagram for GSM900 34. . . . . . . . .

Receiver troubleshooting diagram for GSM1800 35. . . . . . . .

LNA gainstep checking GSM900 & GSM1800 36. . . . . . . . . .

Synthesizer 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Synthesizer troubleshooting diagram 38. . . . . . . . . . . . . . . . .

Synthesizer signals 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FM Radio troubleshooting 41. . . . . . . . . . . . . . . . . . . . . . . . . . .

FM Radio troubleshooting diagram 42. . . . . . . . . . . . . . . . . . .

FM Radio signals 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page 2

 Nokia Corporation

Issue 1 02/2002

PAMS Technical Documentation

Transceiver Troubleshooting

Baseband Troubleshooting

PWB Test Points

NPM–9

Troubleshooting Instructions

FMCLK

FMCTRLDA

FMWREN

FMCTRLCLK

FM RADIO

FMTUNEX

MBUSTX

FBUSRX

DBUSCLK

DBUSDA
UEMINT

PURX

GND

FBUSTX

MBUS

FPS–8

MBUSRX

VPP

FBUSTX

FBUSRX

SLEEPCLK

CBUSDA

CBUSCLK

DBUSENX1

CBUSENX

SLEEPX

EXTRDX

BLACK colored test points are connected to the lines between UEM and
UPP where the logic level is 1.8 V.

RED colored test points are connected to the lines from FPS–8 and have

2.7 V logic level.
BLUE test points are connected to FM radio lines and have 1.8 V logic

level.

Issue 1 02/2002

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Page 3

NPM–9
Troubleshooting Instructions

Measurement Points

PAMS Technical Documentation

VOUT
VDD 2.78 V
VDDI 1.8 V

SCLK
SDA
GND

XCS

XRES

Troubleshooting steps

VR5 2.78 V

VR7 2.78 V

VCORE 1.8VVIO 1.8V

VR3 2.78 V

VFLASH2 2.78 V

VR1B 4.75 V
VR1A 4.75 V
VR2 2.78 V

VR6 2.78 V
VR4 2.78 V

VANA 2.78 V VFLASH1 2.78 V

The following hints help to find the problem if the circuitry seems to be
faulty. The instructions are divided into following sections:

1. Phone is totally dead

2. Flash programming doesn’t work

3. Power doesn‘t stay on or the phone is jammed

4. Charging fault

5. Plug in SIM card is out of order (insert SIM card).

6. Audio fault

7. Display is not working

8. Keypad fault
The first thing to do is carry out a through visual check of the module. En-

sure in particular that:
a) there are not any mechanical damages

b) soldered joints are OK

Page 4

 Nokia Corporation

Issue 1 02/2002

PAMS Technical Documentation

Main troubleshooting tree

TOP

NPM–9

Troubleshooting Instructions

Phone totally

dead

No

Flash programming

doesn’t work

No

Phone doesn’t

start up or the phone is

jammed

Yes

Yes

Yes

Phone is

dead

Flash
faults

Phone is

jammed

Charging

doesn’t work

TOP 2

Issue 1 02/2002

No

No

Yes

 Nokia Corporation

Charger

Page 5

NPM–9
Troubleshooting Instructions

TOP 2

PAMS Technical Documentation

Phone doesn’t read

SIM card

No

Audio faults

No

Display or LED’s

doesn’t work

Yes

Yes

Yes

SIM card

Audio

faults

Display

faults

Page 6

No

Keypad

doesn’t work

No

Yes

 Nokia Corporation

Keypad

faults

END

Issue 1 02/2002

PAMS Technical Documentation

Phone is dead

Phone is

dead

NPM–9

Troubleshooting Instructions

Phone current

is zero ?

No

Phone current is < 50mA

No

Phone current is ~ 54 mA

Yes

Yes

No

Is phone

flash programing OK ?

No

Yes

Check X101

solder and

VBATT lines

Phone is

jammed

Flash
faults

Yes

Is phone in LOCAL

MODE ?

Yes

OK retest

Issue 1 02/2002

No

Check BSI line

X101, C241, R203, C109,

Are they OK ?

 Nokia Corporation

Yes

Change UEM

R202

No

Repair

Page 7

NPM–9
Troubleshooting Instructions

Flash programming doesn’t work

Flash
faults

PAMS Technical Documentation

The Phone does

not set Flashbus TXD line

high after the startup.

No

Yes

Measure BSI pulse

during Flash

programming.

Is it OK ?

Yes

Measure FBUSTX

line during Flash

programming

from testpoint J411

Is it High (1.8V) ?

Yes

No

No

Check BSI line

X101, C241,

R203, C109,

R202

Check R102

If OK –>

Change UEM

Change UPP

The Phone does not set

Flashbus TXD line low after

the line has been high.

No

Flash faults

page 2

Page 8

Yes

 Nokia Corporation

Change UPP

Issue 1 02/2002

PAMS Technical Documentation

Flash faults

page 2

NPM–9

Troubleshooting Instructions

Wrong manufactor ID

and Device ID

No

Is the phone totally dead ?

No

Phone

doesn’t start up

or the phone

is jammed ?

Yes

Yes

Yes

Change

FLASH

Phone is

dead

Phone is

jammed

Retest

Issue 1 02/2002

No

 Nokia Corporation

Page 9

NPM–9
Troubleshooting Instructions

Phone is jammed

Phone is

jammed

Measure

VIO, VCORE, FLASH1,

VANA, VR3 voltages.

Are they OK ?

Yes

No

Check VBATT1–6

VIO, VCORE,

FLASH1, VANA,

VR3 lines. Are

they OK?

Yes

PAMS Technical Documentation

Check

No

Z260 – Z265

C260 – C265

BSI / BTEMP

lines and

VBATT lines

Check BSI /

BTEMP lines. If

OK –>

UEM regulators

are not working

Change UEM

Measure

32.6kHz Sleep Clk

from testpoint J404

Is it OK ?

Yes

Measure

13MHz RFClk from R420.

Is it OK ?

Yes

No

No

Measure

32.6kHz Sleep Clk
from B200.

Is it OK ?

Yes

Measure 26MHz RFClk

from C660.

Is it OK ?

Yes

No

No

Check B200,

C209, C210

Change UEM

Check R661,

C661, R660,

C660 if OK

change G660

Check R420,

C420 if OK

change N600

Measure PURX

signal from testpoint J402

Is it high (1.8V)?

Yes

Jammed

Page 2

Page 10

No

 Nokia Corporation

Change UEM

Issue 1 02/2002

PAMS Technical Documentation

Jammed

Page 2

NPM–9

Troubleshooting Instructions

Phone shutdown after

30s

No

Measure DBUSClk

1MHz signal

from testpoint J413

Is it OK ?

Yes

Read phone info.

Is it OK ?

Yes No

No

No

Measure watchdog

signal CBUSDA from

testpoint J414

Is it OK ?

Measure FBUSRX

signal during phone info read

from testpoint J412

Is it OK ?

Change UPP

No

Change UEM

Yes

Change LA5

module

Issue 1 02/2002

Yes

Measure FBUSTX

signal during phone info read

from testpoint J411

Is it OK ?

Yes

Retest

 Nokia Corporation

No

Change UPP

Change UEM

Page 11

NPM–9
Troubleshooting Instructions

Charging fault

PAMS Technical Documentation

Charger

Battery bar

doesn‘t work (scroll)

Yes

Measure voltage
over (TVS) V100.

Is it > 3.0 Vdc ?

No

No

Connect

(ACP–7)
charger

Retest

Check X100,
V100, C103,

C100, F100,

L100

and line

Yes

Read BTEMP value.

(Compare it to ambient

temperature)

Is it ~ 25 C (0319) ?

Yes

Remove (fuse) F100
and measure current.
Is it ~350...390 mA ?

Yes

No

No

Check

X101,C109

R202, C240,

R203 and line.

Change UEM

Retest

Page 12

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Issue 1 02/2002

PAMS Technical Documentation

SIM card is out of order (insert SIM card)

SIM card

Insert SIM card

faults

Yes

Set phone LOCAL mode

Is it OK ?

Troubleshooting Instructions

Check BSI line

No

X101, C241,
R203, C109,

R202.

If OK –>

Change UEM

NPM–9

No

Yes

Check X386

Measure VSIM voltge

from X386

Is it 3V ?

Yes

Check SIM

power UP sequency

(Page 35 figure 19)

Is it OK ?

No

No

Check VSIM line,X386,

C203, C389.

If OK –> Change R388.

If still wrong VSIM

voltage –> Change UEM

Check SIM lines.

If OK –> Change R388.

If still fail –> Change UEM

END

Issue 1 02/2002

Yes

 Nokia Corporation

Change UPP

Page 13

NPM–9
Troubleshooting Instructions

Audio fault

Audio

faults

PAMS Technical Documentation

Is earpiece working?

Yes

No

Try change earpiece.

Is it working now ?

No

Set phone in LOCAL mode.

Use Phoenix Audio Test.

Set EXT IN, HP OUT, LOOP ON.

Measure DC

offset voltage

from Earpiece pads.

Is it ~1.38V ?

Yes

Yes

No

Retest

Check L151, C160,

R164 and line.

If OK

–> Change UEM

Page 14

Audio

faults 2

Measure MICB2

voltage from XMICP pads

(L106) .

Is it ~2.2V ?

Earpiece

2

 Nokia Corporation

Yes

No

Check L106, C112,
R161, C163, R166,

C165, R167 and

line.
If OK

–> Change UEM

Issue 1 02/2002

PAMS Technical Documentation

Earpiece

2

Connect EXT audio signal 1kHz

(sine) (¨200mVp–p) in XMICP pads

and Ground in XMICN

NPM–9

Troubleshooting Instructions

Measure sine signal
from earpiece pads.

Is it ~880mVp–p ?

Yes

Retest

No

Measure sine signal

from UEM (R156)
Is it ~130mVp–p ?

No

Yes

Change UEM.

Check R156, C153,

C155, R166, R167,

C163, R161 and

line.

Issue 1 02/2002

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Page 15

NPM–9
Troubleshooting Instructions

Audio

faults 2

PAMS Technical Documentation

Is microphone working?

Yes

No

Try change bottom

connector X100.

Is it working now ?

No

Set phone in LOCAL mode.

Use Phoenix Audio Test.

Set HP IN, EXT OUT, LOOP ON.

Measure MICB1

voltage from MICP pads.

Is it ~2.1V ?

Yes

No

Retest

Check L105,

C105, C152,
C156, R152,
C168, C166,

C215 and line.

If OK –>

Change UEM

Page 16

Audio

faults 3

Check C151,

R157, C105,

C154 and line.

If OK –>

Change UEM

 Nokia Corporation

Yes

Issue 1 02/2002

PAMS Technical Documentation

Audio

faults 3

NPM–9

Troubleshooting Instructions

Is BUZZER working?

Yes

No

Measure VBATT

voltage from B301.

Is it OK?

Yes

Set phone in LOCAL mode.

Use Phoenix Audio Test.

Set Buzzer volume ON.

Measure Buzzer

control signal

from BUZZER (C307).

Is it 1kHz pulses ?

No

Yes

Check VBATT

line

Change

BUZZER

(B301)

END

Issue 1 02/2002

No

Check C306,

C307, C308

and line.

IF OK –>

Change UEM

 Nokia Corporation

Page 17

NPM–9
Troubleshooting Instructions

Display fault

Display

faults

Set phone into local mode.

Start Display test with Phenix

PAMS Technical Documentation

Try change UI module

Is it working now ?

Yes

Retest

Are the UI–module

led’s turned on ?

Yes

No

Measure signal

from X303 pin. 2.

Is it 128 Hz

~3.3Vp–p ?

No

Check R306 If OK.

Measure VBATT

from V300 pin. 4

Is it OK?

No

Check X303

Yes

No

Check X303

Check R304

and VBATT

line

Page 18

Display
faults 2

Yes

Measure

PWM LED‘s

control signal from UEM

Is it 128 Hz

~3.8Vp–p ?

Yes

 Nokia Corporation

Check control

signal line if OK

Change UEM

No

Check R305,

V300, V329

and line

Issue 1 02/2002

PAMS Technical Documentation

Display
faults 2

NPM–9

Troubleshooting Instructions

Are the display

led’s turned on ?

Yes

No

Measure signal

fromV301 pin. 3.

Is it 128 Hz

~3.3Vp–p ?

No

Measure VBATT

from V301 pin. 4

It is OK?

Yes

Measure

PWM LED‘s

control signal from UEM

Is it 128 Hz

~3.8Vp–p ?

Yes

No

No

Check LED‘s

and line

Check R307

and VBATT

line

Check control

signal line.

If OK,

Change UEM

Check R305,

V301, V329

and line

Display
faults 3

Issue 1 02/2002

Yes

 Nokia Corporation

Page 19

NPM–9
Troubleshooting Instructions

Display
faults 3

PAMS Technical Documentation

Does the display start ?

Yes

VDD (2.78V) and

No

Measure

VDDI (1.8V).

Is it OK?

Yes

Try change UI module

Is it working now ?

No

Check X300

No

Yes

Retest

Check C303

and lines.

If OK,

Change UEM

Measure

VOUT voltage.

Is it ~8.1V?

Yes

Measure
XRES, XCS.
Is it ~1.8 V?

Yes

END

No

No

Check C302,

X300 and lines.

Check X300

and lines.

If OK, change

UPP

Page 20

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Issue 1 02/2002

PAMS Technical Documentation

Keypad fault

Keypad

faults

No

Is the power key working ?

Measure voltage

from S300

Is it HIGH ?

Troubleshooting Instructions

Check R301,

No

C312, S300

and line.

If OK –>

Change UEM

NPM–9

Yes

Measure voltage
from S300 when

power key is pressed.

Is it HIGH ?

No

Yes

Yes

Chech S300.

Is it OK ?

No

Yes

Phone is

dead

Change S300

Phone is

jammed

Keypad
faults 2

Issue 1 02/2002

 Nokia Corporation

Page 21

NPM–9
Troubleshooting Instructions

Keypad
faults 2

PAMS Technical Documentation

No

Is UI module keys working ?

Yes

Try change UI module.

Is it working now ?

No

Check X303

Measure ROW0,
ROW1, ROW2, ROW3,
ROW4 lines from X303.

Are they ~1.8V ?

Yes

Yes

No

Retest

Check ROW0 –

4 Lines, X303.

If OK change

Z301. If still fail

change UPP

Keypad
faults 3

Measure SLEEPX

signal from J403

when key is pressed.

Is it ~1.8V?

Yes

When keypad

is pressed, the led’s are

turned on ?

Yes

No

No

Check ROW0 –
4 Lines, X303.

If OK change

Z301. If still fail

change UPP

Check ROW0 –

4 Lines, X303.

If OK change

Z301. If still fail

change UPP

Display

faults

Page 22

 Nokia Corporation

Issue 1 02/2002

PAMS Technical Documentation

Keypad

faults 3

No No

Is volume UP key working ?

Measure ROW0

line from S301.

Is it ~1.8 V ?

NPM–9

Troubleshooting Instructions

Check S301,

S302, lines.

If OK change

Z301.

If still FAIL

change UPP

Yes

Is volume DOWN key

working ?

Yes

END

No

Measure COL1

from S301 when

S301 is pressed

Is there

50us pulse ?

Measure ROW0

line from S302.

Is it ~1.8 V ?

Yes

Measure COL4

from S302 when

S302 is pressed

Is there

50us pulse ?

Yes

Yes

No

No

No

Check S301,

S302, lines.

If OK change

change UPP

and COL1 line.

If OK change

Change UPP

Z301.

If still FAIL

Change UPP

Check S301

Z301.

If still FAIL

change UPP

Check S302

and COL4 line.

If OK change

Z301.

If still FAIL

change UPP

Issue 1 02/2002

Yes

 Nokia Corporation

Page 23

NPM–9
Troubleshooting Instructions

RF Troubleshooting

Introduction

Measurements should be done using spectrum analyzer with high–fre­quency high–impedance passive probe (LO–/reference frequencies and
RF power levels) and oscilloscope with a 10:1 probe (DC–voltages and
low frequency signals).

The RF–section is build around one RF–ASIC (HAGAR N600). Before
changing HAGAR, please check following things: Supply voltages are OK
and serial communication coming from baseband to HAGAR.

Please note: Grounding of the PA module is directly below PA module
making it difficult to check or change. Most RF semiconductors are
static discharge sensitive! So ESD protection must be taken care of
during repair (ground straps and ESD soldering irons). HAGAR and PA
are moisture sensitive and must be pre–baked prior to soldering.

PAMS Technical Documentation

Troubleshooting discrete components (resistors, inductors and capaci­tors) is done by checking component soldering. Capacitors can be
checked for shortening and resistor values using an ohmmeter, but re­member in–circuit measurements are evaluated with caution.

Remember that all measured voltages or RF levels in this document are
rough figures. Especially RF levels vary due to different measuring equip­ment or different probe grounding used . When using RF probe it is good
to use metallic tweezers to connect probe ground to PWB ground as
close to measurement point as possible.

Page 24

 Nokia Corporation

Issue 1 02/2002

PAMS Technical Documentation

RF Key Components

NPM–9

Troubleshooting Instructions

EGSM LNA

GSM1800 LNA
Dual RX SAW
Dual coupler

Antenna switch

Antenna pad

Dual PA

EGSM TX SAW

GSM1800 TX balun

GSM1800 RX 2nd SAW

EGSM RX 2nd SAW

FM IF filter 2

FM IF filter 1

Hagar RFIC

VCO balun

FM receiver IC

FM diskriminator

26MHz XO

4GHz VCO

Issue 1 02/2002

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Page 25

NPM–9
Troubleshooting Instructions

PWB Test Points

PAMS Technical Documentation

1800 1st SAW out

900_RX

900 antsw tx contr
1800 antsw contr

1800_RX

1800
PA ctrl

Antenna
pad

900
PA ctrl

900 PA
bias

1800 PA bias

900 PA in

900 1st SAW out

LNA_P

LNAB_P

LNA_G

900 Mod out

1800 Mod out

1800 PA in

1800 LNA out

LNAB_G

VR2

900 LNA out

VrefRf01

VR4 VR6

FMdiscr .

IF out 1

IF out 2

VrefRf02

VR5

RX_Q

13M clock

RX_I
26M xo out
AFC
SLE
SCLK

VR3
4G VCO out
SDATA
VR7
4G VCO ctrl
TX_I_0
FM audio
Vtune
TX_Q_0
VR1a

LCtank1

LCtank2

Page 26

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Issue 1 02/2002

PAMS Technical Documentation

Transmitter

General instructions

Connect test jig to computer with DAU9S cable or to FPS–8 Flash Prom­mer with XCS–4 modular cable.

Make sure that you have PKD–1 dongle connected to computers parallel
port.

Connect DC power supply to module test jig with FLC–2 cable.
NOTE: When repairing or tuning transmitter use external DC supply with

at least 3A current capability. Set the DC supply voltage to 3.9V and set
the jumper connector on test jig to ”bypass” position.

Connect RF–cable to the module test jig (MJS–46) RF connector and to
measurement equipment or at least 10dB attenuator, otherwise the PA
may be damaged. Normally spectrum analyzer is used as measurement
equipment.

NOTE: Normally Spectrum analyzer maximum input power is +30dBm. It
is recommended to use 10dB attenuator on Spectrum analyzer input to
prevent damage.

NPM–9

Troubleshooting Instructions

Set the phone module to test jig and start Phoenix service sofware.
Initialize connection to phone. (use FBUS driver when using DAU9S and

COMBOX driver when using FPS–8)
Select product from the menu: File –> Choose product –> NPM–9
From toolbar set operating mode to ”Local”.
Activate RF controls window from the menu:

Maintenance –> Tuning –> RF Controls
From the RF controls window:

– Select band ”GSM900” or ”GSM 1800” (Default = ”GSM900”)
– Set Active unit to ”Tx” (Default = ”Rx”)
– Set Operation mode to ”Burst” (Default = ”Burst”)
– Set Tx data type to ”Random” (Default = ”All1”)
– Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band
(Defaults)
– Set Tx PA mode to ”Free” (Default)
– Set power level to 5 (Default = 19) on GSM900 or to 0 (Default = 15)
on GSM1800

Issue 1 02/2002

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Page 27

NPM–9
Troubleshooting Instructions

Transmitter troubleshooting diagram

PAMS Technical Documentation

Page 28

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Issue 1 02/2002

PAMS Technical Documentation

NPM–9

Troubleshooting Instructions

Issue 1 02/2002

 Nokia Corporation

Page 29

NPM–9
Troubleshooting Instructions

PAMS Technical Documentation

Page 30

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Issue 1 02/2002

PAMS Technical Documentation

Transmitter signals

NPM–9

Troubleshooting Instructions

TX_I_0, Tx on, Random data, Burst mode

900/1800 antsw tx contr, Tx on, Burst mode

TX_Q_0, Tx on, Random data, Burst mode

900/1800 PA bias, Tx on, Burst mode 900/1800 PA ctrl, Tx on, Burst mode, High

power level

Issue 1 02/2002

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Page 31

NPM–9
Troubleshooting Instructions

PAMS Technical Documentation

GS MPOW Tue Sep 25 13: 48: 59 2001
REF41.0dBm ATT40dB
10dB/

REF OFS

11. 0 dB

RBW

100 kHz

VBW

100 kHz

SWP

2. 0 s
CENTER 897 . 400 MHz SPAN 2 . 000 MHz

A_ wr i t eB_bl ank

Tx out signal, 900 band, burst mode, channel 37

Page 32

 Nokia Corporation

Issue 1 02/2002

PAMS Technical Documentation

Receiver

General instructions

Connect test jig to computer with DAU9S cable or to FPS–8 Flash Prom­mer with XCS–4 modular cable. Make sure that you have PKD–1 dongle
connected to computers parallel port.

Connect DC power supply to module test jig with FLC–2 cable. Set the
DC supply voltage to 3.9V and set the jumper connector on test jig to
”bypass” position.

Connect RF–cable to the module test jig (MJS–46) RF connector and to
RF signal generator.

Set the phone module to test jig and start Phoenix service sofware.
Initialize connection to phone. Use FBUS driver when using DAU9S and

COMBOX driver when using FPS–8.
Choose product from the menu: File –> Choose product –> NPM–9.

NPM–9

Troubleshooting Instructions

From toolbar set operating mode to ”Local”.
Activate RF controls window from the menu: Maintenance –> Testing –>

RF Controls.
From the RF controls window:
– Select band ”GSM900” or ”GSM 1800” (Default = ”GSM900”)

– Set Active unit to ”Rx” (Default = ”Rx”)– Set Operation mode to
”Continuous” (Default = ”Burst”)
– Set AGC to ”8: FEG ON + 46 dB (Default = ”8: FEG ON + 46 dB”)
– Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band
(Defaults)

Apply 942.46771 MHz (channel 37 + 67.710 kHz offset) or 1842.86771
MHz (channel 700 + 67.710 kHz offset) –90 dBm signal to the RF–con­nector (remember to compensate for cable attenuation).

Measuring with an oscilloscope on ”RX_I” or ”RX_Q” this picture should
be seen on a working GSM900 or GSM1800 receiver:

Signal amplitude is 700 mVpp, DC offset 1.35 V and frequency 67 kHz. If
this picture is not seen, continue to the next page.

Issue 1 02/2002

 Nokia Corporation

Page 33

NPM–9
Troubleshooting Instructions

PAMS Technical Documentation

Receiver troubleshooting diagram for GSM900

Apply –90dBm

942.46771MHz signal
from generator to anten­na connector

Yes

Oscilloscope at RX_I
Signal 700mVpp
DC offset 1.35V Fre­quency 67.7kHz

Yes

EGSM RX chain func­tional

No

Change ge­nerator level
to –50dBm

Spectrumanalyzer
900 LNA out
–61 dBm

Yes

NoYes

Spectrumanalyzer
900 1st SAW out
–80 dBm

Oscilloscope
LNA_G 2.7V
LNAB_G 2.7V

Spectrumanalyzer
V500, RFout –57
dBm

Oscilloscope
V500, RFout 2.7V
V500, RFin 0.8 V

Yes

Yes

Spectrumanalyzer
900_RX
–79 dBm

Check dual RX SAW
Z520

Oscilloscope
VR4 2.7V
Check Hagar seri­al interface Check
R501

Check Hagar
N600

Yes

Check C502

NoNo

Check V500,
L500, R502

Yes

Yes

NoNo

NoNo

Check An­tenna switch
Z500

Check Base­band

Spectrumanalyzer
900 bal out
–66 dBm

Yes

Oscilloscope
VR4 2.7V
Check Hagar serial
interface (burst mo­de)

Yes

Spectrumanalyzer
4G VCO out

3769.6MHz
∼–30 dBm (*

Yes

Check Hagar N600

Check V500, C501,
L502, L503

No

Check Z501, C505,
C506, L501

No

Check Baseband

No

Synthesizer troubles­hooting

Yes

All spectrumanalyzer reading
values are measured with 1
kohm passive probe (use
tweezers to connect the
probe ground to the nearest
PWB ground). Reading value
is represented without +26
dB compensation.

* Spectrumanalyzer
reading with 1 kohm
passive probe (right val­ue add +26 dB)

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Issue 1 02/2002

PAMS Technical Documentation

Troubleshooting Instructions

Receiver troubleshooting diagram for GSM1800

Apply –90dBm

1842.86771MHz signal
from generator to anten­na connector

Oscilloscope at RX_I
Signal 700mVpp
DC offset 1.35V Fre­quency 67.7kHz

Change ge­nerator level
to –50dBm

Spectrumanalyzer
1800 LNA out
–61 dBm

Spectrumanalyzer
1800 1st SAW out
–77 dBm

Spectrumanalyzer
1800_RX
–78 dBm

NPM–9

NoNoNoYesNoYes

Check An­tenna switch
Z500

Yes

GSM1800 RX chain
functional

Yes

Yes

Oscilloscope
LNA_P 0V
LNAB_P 2.7V

Yes

Spectrumanalyzer
V550,
RFout –58 dBm

Oscilloscope
V550, RFout 2.6V
V550, RFin 0.8 V

Yes

Check V550, C551,
L552

Check dual RX SAW
Z520

Oscilloscope
VR4 2.7V
Check Hagar seri­al interface (burst
mode)

Check Hagar
N600

Yes

Check C552

NoNo

Check V550,
R551, L550,
R558

Yes

Yes

NoNo

Check Base­band

Issue 1 02/2002

No

Spectrumanalyzer
1800 bal out
–66 dBm

Oscilloscope
VR4 2.7V
Check Hagar serial
interface (burst mo­de)

Spectrumanalyzer
4G VCO out

3685.6MHz
∼–30 dBm (*

Yes

Check Hagar N600

Check Z551, C555,
C556, L551

NoYes

Check Baseband

NoYes

Synthesizer troubles­hooting

 Nokia Corporation

All spectrumanalyzer reading
values are measured with 1
kohm passive probe (use
tweezers to connect the
probe ground to the nearest
PWB ground). Reading value
is represented without +26
dB compensation.

* Spectrumanalyzer
reading with 1 kohm
passive probe (right val­ue add +26 dB)

Page 35

NPM–9
Troubleshooting Instructions

PAMS Technical Documentation

LNA gainstep checking GSM900 & GSM1800

900 LNA out 1800 LNA out
– RF–level at antenna port eg. –50 dBm
– RX continuous mode (local mode)
– difference between AGC –settings
”FEG on” and ”FEG off”
roughly 25 dB (using 250 ohm
passive RF–probe)

LNAB_G LNAB_P
– RX continuous mode (local mode)
– 2,6 V DC voltage ”FEG ON”
– 0 V DC voltage ”FEG OFF”

LNA_G 1800 LNA_P
– RX continuous mode (local mode)
– 2,7 V DC voltage ”FEG ON” and ”FEG
OFF”

– RF–level at antenna port eg. –50 dBm
– RX continuous mode (local mode)
– difference between AGC –settings
”FEG on” and ”FEG off”
roughly 30 dB (using 250 ohm passive
RF–probe)

– RX continuous mode (local mode)
– 2,7 V DC voltage ”FEG ON”
– 0 V DC voltage ”FEG OFF”

– RX continuous mode (local mode)
– 0 V DC voltage ”FEG ON”
– 1.9 V DC voltage ”FEG OFF”

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Issue 1 02/2002

PAMS Technical Documentation

Synthesizer

General instructions

Connect test jig to computer with DAU–9S cable or to FPS–8 Flash Prom­mer with XCS–4 modular cable.

Make sure that you have PKD–1 dongle connected to computers parallel
port.

Connect DC power supply or FPS–8 to module test jig with FLC–2 cable.
Set the DC supply voltage to 3.9V and set the jumper connector on test

jig to ”bypass” position.
Set the phone module to test jig and start Phoenix service sofware.
Initialize connection to phone. (use FBUS driver when using DAU–9S and

COMBOX driver when using FPS–8)
Select product from the menu: File –> Choose product –>NPM–9
From toolbar set operating mode to ”Local”.

NPM–9

Troubleshooting Instructions

Activate RF controls window from the menu:
Maintenance –> Tuning –> RF Controls

From the RF controls window:
– Select band ”GSM900” or ”GSM 1800” (Default = ”GSM900”)

– Set Active unit to ”Rx” (Default = ”Rx”)
– Set Operation mode to ”Continuous” (Default = ”Burst”)
– Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band
(Defaults)

Issue 1 02/2002

 Nokia Corporation

Page 37

NPM–9
Troubleshooting Instructions

Synthesizer troubleshooting diagram

PAMS Technical Documentation

Page 38

 Nokia Corporation

Issue 1 02/2002

PAMS Technical Documentation

Synthesizer signals

NPM–9

Troubleshooting Instructions

26MHz XO out

4GHz VCO ctrl

900 RX, channel 124, continuous mode

13MHz clock

4GHz VCO ctrl

1800 TX, channel 512, continuous mode

Issue 1 02/2002

 Nokia Corporation

Page 39

NPM–9
Troubleshooting Instructions

PAMS Technical Documentation

REF –20 . 0 dBm ATT 10 d B

Fr i May 11 13: 03: 26 2001

10dB/

MK R

3. 610400 GHz

RBW

10 kHz

VBW

10 kHz

SWP

50 ms

CENTER 3. 6104000 GHz SPAN 2. 00 0 MHz

A_ v i ewB_bl ank

MARKER

3. 610400 GHz
–30. 72 dBm

4GHz VCO output, 1800 band, RX on, continuous mode

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Issue 1 02/2002

PAMS Technical Documentation

FM Radio troubleshooting

NPM–9

Troubleshooting Instructions

FM Radio component layout
Components L101, C101 and C102 are not shown in picture. Compo-

nents are placed in baseband section.

Issue 1 02/2002

 Nokia Corporation

Page 41

NPM–9
Troubleshooting Instructions

FM Radio troubleshooting diagram

PAMS Technical Documentation

Note 1. RF test signal parameters:

A,

– Amplitude,

– Carrier ferquency,
– Deviation, ∆

– Modulating frequency

–67.0 dBm

f

, 98,000 MHz

f

, 75 kHz

c

f

, 1,000 kHz

m

(RF generator internal)

Note 2. Use 10x probe. Compare measured RF signal level to a known good product.

Page 42

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Issue 1 02/2002

PAMS Technical Documentation

FM Radio signals

NPM–9

Troubleshooting Instructions

Audio out from PWB test point – with FM
test signal.

GSMP OW Fr i Aug 31 07: 40: 21 2001
REF – 3 0 . 0 d Bm AT T 0 dB
10dB/

CENT ER

98. 0000 MHz

REF OFS

0. 0 dB

RBW

10 kHz

VBW

10 kHz

SWP

2. 0 s
CENTER 98. 0000 MHz SPAN 500 kHz

A_v i ewB_bl ank

Audio out from test jig connector – with FM
test signal, volume 100%.

GSMP OW Fr i Aug 31 07: 42: 56 2001
REF – 3 0 . 0 d Bm AT T 0 dB
10dB/

CENT ER

108. 7000 MHz

REF OFS

0. 0 dB

RBW

10 kHz

VBW

10 kHz

SWP

2. 0 s
CENTER 108. 7000 MHz SPAN 500 kHz

LC tank 1 – with FM test signal. LC tank 2 – with FM test signal.

GSMP OW Fr i Aug 31 07: 48: 18 2001
REF – 3 0 . 0 d Bm AT T 0 dB
10dB/

A_v i ewB_bl ank

GSMP OW Fr i Aug 31 07: 46: 31 2001
REF –30. 0 dBm ATT 0 dB
10dB/

A_v i ewB_bl ank

A_v i ewB_bl ank

SPAN

1. 000 MHz

REF OFS

0. 0 dB

RBW

10 kHz

VBW

10 kHz

SWP

2. 0 s
CENTER 10. 7000 MHz SPAN 1. 000 MHz

SPAN

1. 000 MHz

REF OFS

0. 0 dB

RBW

10 kHz

VBW

10 kHz

SWP

2. 0 s
CENTER 10. 7000 MHz SPAN 1. 000 MHz

IF out 1 – with FM test signal. IF out 2 – with FM test signal.

Issue 1 02/2002

 Nokia Corporation

Page 43

NPM–9
Troubleshooting Instructions

PAMS Technical Documentation

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Issue 1 02/2002