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PAMS Technical Documentation
NSM±2 Series Transceivers
Disassembly &
Troubleshooting
Instructions
Issue 1 12/1999 |
Nokia Mobile Phones Ltd. |
NSM±2 |
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Disassembly & Troubleshooting Instructions |
PAMS Technical Documentation |
CONTENTS |
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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 |
Page 2 |
Nokia Mobile Phones Ltd. |
Issue 1 12/1999 |
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NSM±2 |
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PAMS Technical Documentation |
Disassembly & Troubleshooting Instructions |
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Disassembly of NSM±2
Remove battery.
Step 1. Press the button on the side. 1. Step 2. Slide the cover downwards and
the cover will be released.
2.
1.
3. Remove the SIM card from its location.
4. Remove the slide cover.
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.
2. |
1. |
3.
Issue 1 12/1999 |
Nokia Mobile Phones Ltd. |
Page 3 |
NSM±2 |
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Disassembly & Troubleshooting Instructions |
PAMS Technical Documentation |
Remove the antenna.
5.
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.
7. Remove A±cover, speaker and power button.
6.
Remove the frame screws (4 pcs). Screws are numbered according to the tightening order.
4
3
1
NOTE: When assembling the screws, use 17 Ncm torque.
2
Remove keymat module
8. screws (2 or 3pcs depending on the model).
NOTE: When assembling the screws, use 17 Ncm torque.
Page 4 |
Nokia Mobile Phones Ltd. |
Issue 1 12/1999 |
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NSM±2 |
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PAMS Technical Documentation |
Disassembly & Troubleshooting Instructions |
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Push SW/slide switch before removing the keymat module. Now remove the
9. keymat module and rtc±battery.
NOTE: Be careful not to damage the
SW/slide switch on the PCB.
10.
Parts can be separated:
±lcd module
±PCB
±buzzer rubber
± metal gasket
±bottom connector
±SIM connector
± vibra
Issue 1 12/1999 |
Nokia Mobile Phones Ltd. |
Page 5 |
NSM±2 |
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Disassembly & Troubleshooting Instructions |
PAMS Technical Documentation |
11. |
Remove the volume switch 1. |
Remove the volume key 2. |
12.
13.
Turn the phone around.
Press down battery conector springs using Battery Connector Extractor Tool.
Battery connector will be released.
Release the latch snap.
Remove the latch and latch spring.
Page 6 |
Nokia Mobile Phones Ltd. |
Issue 1 12/1999 |
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NSM±2 |
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PAMS Technical Documentation |
Disassembly & Troubleshooting Instructions |
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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) |
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HAGAR (N505) ±> MAD (D200) |
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J100* |
PWM |
CHARGE CURRENT CONTROL |
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CCONT (N100) ±> CHAPS (N101) |
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J101 |
FBUSTX |
FBUS TRANSMITTED DATA |
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MAD (D200) ±> SERVICE INTERFACE |
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J102 |
FBUSRX |
FBUS RECEIVED DATA |
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SERVICE INTERFACE ±> MAD (D200) |
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J103 |
MBUS |
ONE WIRE TWO DIRECTION SERIAL BUS |
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(9600 BIT/S) |
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MAD (D200) <±> SERVICE INTERFACE |
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J104 |
CCONT CSX |
CCONT (N100) CHIP SELECT |
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MAD (D200) ±> CCONT (N100) |
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J223 |
CCONT INT |
CCONT (N100) INTERRUPT |
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MAD (D200) ±> CCONT (N100) |
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J226 |
VCXOPWR |
26MHz SYSTEM CLOCK CONTROL |
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MAD (D200) ±> VCXO (G830) |
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J227 |
PURX |
POWER UP RESET |
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CCONT (N100) ±> MAD (D200) |
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J228 |
SLEEPCLK |
SLEEP CLOCK (32kHz) |
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CCONT (N100) ±> MAD (D200) |
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J230 |
GND |
GROUND |
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J234* |
HAGAR _RESET_X |
HAGAR (N505) RESET |
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MAD (D200) ±> HAGAR (N505) |
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J235 |
ROM1SELX |
FLASH CHIP SELECT |
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MAD (D200) ±> COMBO MEMORY (D210) |
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J236 |
RAMSELX |
RAM CHIP SELECT |
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MAD (D200) ±> COMBO MEMORY (D210) |
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J237 |
SYNTHDATA |
HAGAR (N505) SERIAL DATA |
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(SDATA) |
MAD (D200) ±> HAGAR (N505) |
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J239 |
DSPXF |
NOT CONNECTED |
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J240 |
MCURDX |
MCU READ |
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MAD (D200) ±> COMBO MEMORY (D210) |
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J241 |
MCUWRX |
MCU WRITE |
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MAD (D200) ±> COMBO MEMORY (D210) |
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J242 |
MCUAD1 |
MCU ADDRESS LINE 1 |
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MAD (D200) ±> COMBO MEMORY (D210) |
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Issue 1 12/1999 Nokia Mobile Phones Ltd. Page 7
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