Nokia NSM-4 Series Instrucciones de instalación

PAMS Technical Documentation

NSM–4 Series Transceivers

Issue 1 01/2002 Nokia Corporation

Disassembly &

Troubleshooting

Instructions

NSM–4

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 2 Issue 1 01/2002

Nokia Corporation

CONTENTS

Disassembly of NSM–4 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transceiver Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Baseband Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .

PWB Test Points 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Testing 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Clock 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sleep Clock 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Supplies 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Phone is totally dead 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flash programming fails 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power doesn’t stay on or phone is jammed 19. . . . . . . . . . . .

Contact Service on the phone display 19. . . . . . . . . . . . . . . . .

SIM related faults 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio faults 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Charging fault 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF Troubleshooting 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NSM–4

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 3

Issue 1 01/2002 Nokia Corporation

Disassembly of NSM–4

NSM–4 phone disassembled.

NSM–4

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 4 Issue 1 01/2002

Nokia Corporation

Remove battery.

Step 3. Lift the battery first from the

lower end. Remove the battery.

Step 1. Press the button on the side.

Step 2. Slide the cover downwards and

it will be released.

NSM–4

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 5

Issue 1 01/2002 Nokia Corporation

Remove the SIM card from its location.

Step 1. Open the slide cover.

Remove the slide cover.

Step 2. Push the slide edge outwards.

NOTE: Use only numbered side 2 to release

the slide.

Step 3. Lift the slide up simultaneously and

the slide will be released.

2. 3.

NSM–4

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 6 Issue 1 01/2002

Nokia Corporation

Step 1. To remove the antenna, push with the

thin spike of SRT–3 (Battery Connector Extrac-

tor Tool) forward to release the snaps and lift

up the antenna.

NOTE: Be careful not brake the middle frame.

Remove the antenna.

5. Remove the A–cover.

Remove the frame screws (4 pcs). Screws are

numbered according to the tightening order.

NOTE: When assembling the screws,

use 14 Ncm torque.

A–cover can now be removed.

Remove speaker if needed.

NSM–4

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 7

Issue 1 01/2002 Nokia Corporation

Remove keymat module screws (2 pcs).

NOTE: When assembling the

screws, use 17 Ncm torque.

Keymat module removed.

Push SW/slide switch before removing

the keymat module. Now remove the

keymat module.

NOTE: Be careful not to damage the

slide switch on the PWB.

Remove PWB and display.

Push from the side to release the PWB.

To remove the display release the snap fix-

ings in the display module.

Remove the keymat module.

NSM–4

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 8 Issue 1 01/2002

Nokia Corporation

Main frame and PWB apart.

Following parts can be separated from the

main frame:

– bottom connector

– SIM connector

– vibra

– metal gasket

8. Remove battery connector.

Turn the phone around.

Press down battery connector springs

using SRT–3 (Battery Connector Ex-

tractor Tool). Battery connector will be

released.

Remove first the volume switch.

Then remove the volume key.

Remove volume switch and key.

NSM–4

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 9

Issue 1 01/2002 Nokia Corporation

10.

Parts separated from

the main frame.

NSM–4 phone disassembled.

NSM–4

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 10 Issue 1 01/2002

Nokia Corporation

Transceiver Troubleshooting

Baseband Troubleshooting

Because of the underfilling of the MAD and combo memory, it is impossible

to change those.

PWB Test Points

Reference Signal Note

C213 RFC MAIN CLOCK (13MHz)

HAGAR (N505) –> MAD (D200)

J100* PWM CHARGE CURRENT CONTROL

CCONT (N100) –> CHAPS (N101)

J101 FBUSTX FBUS TRANSMITTED DATA

MAD (D200) –> SERVICE INTERFACE

J102 FBUSRX FBUS RECEIVED DATA

SERVICE INTERFACE –> MAD (D200)

J103 MBUS ONE WIRE TWO DIRECTION SERIAL BUS

(9600 BIT/S)

MAD (D200) <–> SERVICE INTERFACE

J104 CCONT CSX CCONT (N100) CHIP SELECT

MAD (D200) –> CCONT (N100)

J223 CCONT INT CCONT (N100) INTERRUPT

MAD (D200) –> CCONT (N100)

J226 VCXOPWR 26MHz SYSTEM CLOCK CONTROL

MAD (D200) –> VCXO (G830)

J227 PURX POWER UP RESET

CCONT (N100) –> MAD (D200)

J228 SLEEPCLK SLEEP CLOCK (32kHz)

CCONT (N100) –> MAD (D200)

J230 GND GROUND

J234* HAGAR _RESET_X HAGAR (N505) RESET

MAD (D200) –> HAGAR (N505)

J235 ROM1SELX FLASH CHIP SELECT

MAD (D200) –> COMBO MEMORY (D210)

J236 RAMSELX RAM CHIP SELECT

MAD (D200) –> COMBO MEMORY (D210)

J237 SYNTHDATA

(SDATA) HAGAR (N505) SERIAL DATA

MAD (D200) –> HAGAR (N505)

J239 DSPXF NOT CONNECTED

J240 MCURDX MCU READ

MAD (D200) –> COMBO MEMORY (D210)

J241 MCUWRX MCU WRITE

MAD (D200) –> COMBO MEMORY (D210)

J242 MCUAD1 MCU ADDRESS LINE 1

MAD (D200) –> COMBO MEMORY (D210)

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