Nokia NSM-2 Series Installation instructions

PAMS Technical Documentation

NSM–2 Series Transceivers

Issue 1 12/1999 Nokia Mobile Phones Ltd.

Disassembly &

Troubleshooting

Instructions

NSM–2

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 2 Issue 1 12/1999

Nokia Mobile Phones Ltd.

CONTENTS

Disassembly of NSM–2 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transceiver Troubleshooting 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Baseband Troubleshooting 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .

PCB Test Points 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Testing 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

System Clock 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sleep Clock 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Supplies 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Phone is totally dead 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flash programming fails 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power doesn’t stay on or phone is jammed 16. . . . . . . . . . . .

Contact Service on the phone display 16. . . . . . . . . . . . . . . . .

SIM related faults 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio faults 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Charging fault 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF Troubleshooting 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NSM–2

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 3

Issue 1 12/1999 Nokia Mobile Phones Ltd.

Disassembly of NSM–2

Remove battery.

Remove the SIM card from its location.

Step 1. Open 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.

Step 3. Lift the battery first

from the lower end.

Step 4. Remove the battery.

Step 1. Press the button on the side.

Step 2. Slide the cover downwards and

the cover will be released.

Remove the slide cover.

1. 2.

NSM–2

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 4 Issue 1 12/1999

Nokia Mobile Phones Ltd.

Remove keymat module

screws (2 or 3pcs de-

pending on the model).

Remove the frame

screws (4 pcs).

Screws are num-

bered according to

the tightening order.

Step 1. To remove the antenna, push with the thin spike

of SRT–3 (Battery Connector Extractor Tool) forward to

release the snaps.

Step 2. Release snap fixing using screw driver.

Step 3. Lift up the antenna.

NOTE: Models with no hole in the frame, push firmly the

antenna (1. arrow direction) to release the snaps. Use

screw driver to release snap fixing (2. arrow). Lift up the

antenna (3. arrow).

NOTE: Be careful not brake the middle frame.

Remove A–cover, speaker

and power button.

NOTE: When

assembling the

screws, use 17

Ncm torque.

NOTE: When assembling the

screws, use 17 Ncm torque.

Remove the antenna.

NSM–2

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 5

Issue 1 12/1999 Nokia Mobile Phones Ltd.

Parts can be separated:

– lcd module

– PCB

– buzzer rubber

– metal gasket

– bottom connector

– SIM connector

– vibra

Push SW/slide switch before removing

the keymat module. Now remove the

keymat module and rtc–battery.

NOTE: Be careful not to damage the

SW/slide switch on the PCB.

10.

NSM–2

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 6 Issue 1 12/1999

Nokia Mobile Phones Ltd.

Turn the phone around.

Press down battery conector springs

using Battery Connector Extractor Tool.

Battery connector will be released.

Remove the volume switch 1.

Remove the volume key 2.

12.

11.

13.

Release the latch snap.

Remove the latch and latch spring.

NSM–2

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 7

Issue 1 12/1999 Nokia Mobile Phones Ltd.

Transceiver Troubleshooting

Baseband Troubleshooting

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

to change those.

PCB 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)

NSM–2

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 8 Issue 1 12/1999

Nokia Mobile Phones Ltd.

NoteSignalReference

J245* SCLK HAGAR (N505) SERIAL CLOCK

MAD (D200) –> HAGAR (N505)

J250 COBBA CSX COBBA (N250) CHIP SELECT

MAD (D200) –> COBBA (N250)

J251 COBBA SDA COBBA (N250) SERIAL BUS DATA

MAD (D200) <–> COBBA (N250)

J252 COBBA CLK COBBA (N250) SERIAL BUS CLOCK

MAD (D200) –> COBBA (N250)

J253 PCMRXDATA AUDIO RECEIVED DATA

COBBA (N250) –> MAD (D200)

J254 PCMDCLK AUDIO DATA CLOCK (512KHz)

MAD (D200) –> COBBA (N250)

J255 PCMSCLK AUDIO SYNC CLOCK (8kHz)

MAD (D200) –> COBBA (N250)

J255 ESYSRESETX COMPOMEMORY (D210) ENABLE

MAD (D200) –> COMBO MEMORY (D210)

J256 PCMTXDATA AUDIO TRANSMITTED DATA

MAD (D200) –> COBBA (N250)

J257 CCUT (MCUGE-

NIO0) CHARGE CUT

MAD (D200) –> CHAPS (N101)

J258* BUTTON_CTRL

(MCUGENIO1) HEADSET BUTTON DETECTION CON-

TROL

MAD (D200) –> XMICP

J259 MCUGENIO2 NOT CONNECTED

J260 EXTMCUDA0 MCU DATA LINE 0

MAD (D200) <–> COMPOMEMORY (D210)

J299* TXP TRANSMITTER POWER CONTROL

MAD (D200) –> RF

L200 MIC MIC BIAS VOLTAGE, 2.1V IF NO MIC

V250 –> MIC

N310 PIN 13 KBD LIGHT KEYPAD LED LIGHT CURRENT

UI–SWITCH (N310) –> KEYPAD BACK-

LIGHT LEDS

N310 PIN 14 KBDLED_ADJ KEYPAD BACKLIGHT BRIGHTNESS AD-

JUSTMENT

R311 –> UI–SWITCH (N310)

N310 PIN 16 VIBRA_CTRL VIBRA DRIVE

UI–SWITCH (N310) –> VIBRA (M300)

N310 PIN 19 VIBRA VIBRA CONTROL PWM

MAD (D200) –> UI–SWITCH (N310)

N310 PIN 3 BUZZER BUZZER CONTROL PWM

MAD (D200) –> UI–SWITCH (N310)

N310 PIN 6 BUZZER_CTRL BUZZER DRIVE

UI–SWITCH (N310) –> BUZZER (B301)

N310 PIN 7 KBLIGHTS KEYPAD AND DISPLAY BACKLIGHT CON-

TROL

MAD (D200) –> UI–SWITCH (N310)

NSM–2

Disassembly & Troubleshooting Instructions

PAMS Technical Documentation

Page 9

Issue 1 12/1999 Nokia Mobile Phones Ltd.

NoteSignalReference

N310 PIN 8 LCDLED_ADJ LCD BACKLIGHT BRIGHNESS ADJUST-

MENT

R310 –> UI–SWITCH (N310)

N310 PIN 9 LCD LIGHT LCD LED LIGHT CURRENT

UI–SWITCH (N310) –> DISPLAY BACK-

LIGHT LEDS

N400 PIN 4 IRONX IRDA (N400) SHUTDOWN

MAD (D200) –> IRDA (N400)

N401 PIN 4 IRDA POWER 2.8V

N401 –> IRDA (N400)

R118 PWRONX POWER ON BUTTON

POWER BUTTON (S330) –> CCONT (N100)

R206 SENA HAGAR (N505) CHIP SELECT

MAD (D200) –> HAGAR (N505)

R211 VPP FLASH PROGRAMMING VOLTAGE

N220 –> COMPOMEMORY (D210)

R277 EAD ACCESSORY DETECTION

XMICP –> CCONT (N100)

*Only in NSM–2..

Testing

The MCU software enters a local mode at start–up if suitable resistors are

connected to the BTEMP and BSI lines.

NOTE! Baseband doesn’t wake up automatically when the battery voltage

is connected. Power must be switched on by

pressing the Power key or

inserting a waking pulse BTEMP line or

connecting a charger

In the local mode the baseband can be controlled through MBUS or

FBUS connections by a PC–locals software. Baseband internal connec-

tions are tested with selftests if possible.

Parameters cannot be set accurate enough by design because of compo-

nent tolerances. Due to use of 5% resistor values, the channels of the

CCONT A/D converters need to be aligned in the production phase. With-

in battery voltage tuning the MCU software reads the A/D reading from

CCONT at 4.1V and stores this reading to emulated EEPROM memory as

a reference point. Another reference point is created by assuming that

while the input voltage is zero, A/D reading is also zero. Now the slope is

known and A/D readings can be calibrated. Calibration is included in

VBATT A/D reading task.

NSM–2

Disassembly & Troubleshooting Instructions PAMS Technical Documentation

Page 10 Issue 1 12/1999

Nokia Mobile Phones Ltd.

Troubleshooting

Troubleshooting instructions are divided into following sections:

How to check/fix the system/sleep clock.

How to check/fix the power supplies.

Contact service case.

How to check/fix the SIM faults.

How to check/fix the Audio faults.

How to check/fix the charger faults.

The first thing to do is to carry out a thorough visual check of the module.

Make sure that:

– there are no mechanical damages

– solder joints are OK

Before changing anything ALL SUPPLY VOLTAGES AND SYSTEM

CLOCK / SLEEP CLOCK should be checked.

26MHz VCXO

G830

HAGAR

N505

Clock signal

buffer

V800++

MAD

C213

13MHz

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