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.
3.
4.
1.
2.
1.
2.
3.

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.
12
3
4
Remove the antenna.
5.
6.
7.
8.

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.
9.
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
/2
13MHz