Nokia NSM-3 Installation instructions
PAMS Technical Documentation
NSM–3/3D Series Transceivers
Issue 3 11/2000 Nokia Mobile Phones Ltd.
Disassembly &
Troubleshooting
Instructions
NSM–3/3D
Disassembly & Troubleshooting Instructions PAMS Technical Documentation
Page 2 Issue 3 11/2000
Nokia Mobile Phones Ltd.
CONTENTS
Disassembly of NSM–3 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly of NSM–3D 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transceiver Troubleshooting 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Baseband Troubleshooting 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PCB Test Points 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Clock 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sleep Clock 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supplies 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phone is totally dead 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash programming fails 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power doesn’t stay on or phone is jammed 20. . . . . . . . . . . .
Contact Service on the phone display 20. . . . . . . . . . . . . . . . .
SIM related faults 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio faults 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging fault 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Troubleshooting 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NSM–3/3D
Disassembly & Troubleshooting Instructions
PAMS Technical Documentation
Page 3
Issue 3 11/2000 Nokia Mobile Phones Ltd.
Disassembly of NSM–3
Remove battery.
Remove the SIM card
from its location.
Step 3. Lift the battery first
from the bottom end.
Step 4. Remove the battery.
Remove A–cover.
Step 1. Press the button
on the top of the phone.
Step 2. Pull A–cover apart.
NOTE snap fixings at the
lower end of A–cover.
Step 1. Press the but-
ton at the bottom of the
phone.
Step 2. Slide the cover
downwards and the
cover will be released.
1.
2.
3.
4.
NSM–3/3D
Disassembly & Troubleshooting Instructions PAMS Technical Documentation
Page 4 Issue 3 11/2000
Nokia Mobile Phones Ltd.
NOTE: When assembling the
screws, use 17 Ncm torque.
To remove the PCB from the
housing remove the 6 screws.
NOTE: Here is shown the as-
sembly order.
1
2
3
4
5
6
Remove the PCB from B–cover.
Parts can be separated. Latch and latch spring can be separated
after removal of the left A–cover fixing.
1. When taking the PCB and UI mod-
ule apart remember the snap fixings
on both sides of the LCD.
NOTE: When assembling make
sure UI and PCB module edges
are fitted also correctly.
1.
Remove the speaker
from its housing.
NOTE: Install allways
new speaker, old speaker
must not be used.
5.
6.
7.
8.
9.
NSM–3/3D
Disassembly & Troubleshooting Instructions
PAMS Technical Documentation
Page 5
Issue 3 11/2000 Nokia Mobile Phones Ltd.
Remove the RTC battery from its
housing in UI module.
Remove the bat-
tery connector
from its housing
using SRT–3 tool.
Remove the antenna
by releasing the snap
fixings at both sides of
the phone.
10.
12.
11.
13.
Remove the volume switch and
key from the B–cover housing.
NSM–3/3D
Disassembly & Troubleshooting Instructions PAMS Technical Documentation
Page 6 Issue 3 11/2000
Nokia Mobile Phones Ltd.
Main parts of the phone disassembled.
14.
Remove the SIM
spring by releasing
the fixings at both
ends of the spring.
NSM–3/3D
Disassembly & Troubleshooting Instructions
PAMS Technical Documentation
Page 7
Issue 3 11/2000 Nokia Mobile Phones Ltd.
Disassembly of NSM–3D
Remove battery.
Remove the SIM card
from its location.
Step 3. Lift the battery first
from the bottom end.
Step 4. Remove the battery.
Remove A–cover.
Step 1. Press the button
on the top of the phone.
Step 2. Pull A–cover apart.
NOTE snap fixings at the
lower end of A–cover.
Step 1. Press the but-
ton at the bottom of the
phone.
Step 2. Slide the cover
downwards and the
cover will be released.
1.
2.
3.
4.
NSM–3/3D
Disassembly & Troubleshooting Instructions PAMS Technical Documentation
Page 8 Issue 3 11/2000
Nokia Mobile Phones Ltd.
NOTE: When assembling the
screws, use 17 Ncm torque.
To remove the PCB from the
housing remove the 6 screws.
NOTE: Here is shown the as-
sembly order.
1
2
3
45
6
Remove the PCB from B–cover.
Parts can be separated. Latch and latch spring can be separated
after removal of the left A–cover fixing.
1. When taking the PCB and UI mod-
ule apart remember the snap fixings
on both sides of the LCD.
NOTE: When assembling make
sure UI and PCB module edges
are fitted also correctly.
1.
Remove the speaker
from its housing.
NOTE: Install allways
new speaker, old speaker
must not be used.
5.
6.
7.
8.
9.
NSM–3/3D
Disassembly & Troubleshooting Instructions
PAMS Technical Documentation
Page 9
Issue 3 11/2000 Nokia Mobile Phones Ltd.
Remove the RTC battery from its
housing in UI module.
Remove the bat-
tery connector
from its housing
using SRT–3 tool.
Remove the antenna
by releasing the snap
fixings at both sides of
the phone.
10.
12.
11.
13.
Remove the volume switch and
key from the B–cover housing.
NSM–3/3D
Disassembly & Troubleshooting Instructions PAMS Technical Documentation
Page 10 Issue 3 11/2000
Nokia Mobile Phones Ltd.
Main parts of the phone disassembled.
14.
Remove the SIM
spring by releasing
the fixings at both
ends of the spring.
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