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PAMS Technical Documentation
NSM±4 Series Transceivers
Disassembly &
Troubleshooting
Instructions
Issue 1 01/2002 |
Nokia Corporation |
NSM±4 |
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Disassembly & Troubleshooting Instructions |
PAMS Technical Documentation |
CONTENTS |
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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 |
Page 2 |
Nokia Corporation |
Issue 1 01/2002 |
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NSM±4 |
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PAMS Technical Documentation |
Disassembly & Troubleshooting Instructions |
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Disassembly of NSM±4
NSM±4 phone disassembled.
Issue 1 01/2002 |
Nokia Corporation |
Page 3 |
NSM±4 |
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Disassembly & Troubleshooting Instructions |
PAMS Technical Documentation |
1.
1. Remove battery.
Step 1. Press the button on the side.
Step 2. Slide the cover downwards and it will be released.
2.
Step 3. Lift the battery first from the lower end. Remove the battery.
3.
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Nokia Corporation |
Issue 1 01/2002 |
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NSM±4 |
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PAMS Technical Documentation |
Disassembly & Troubleshooting Instructions |
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2. Remove the SIM card from its location.
3. |
Remove the slide cover. |
Step 1. Open the slide cover.
1.
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.
Issue 1 01/2002 |
Nokia Corporation |
Page 5 |
NSM±4 |
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Disassembly & Troubleshooting Instructions |
PAMS Technical Documentation |
1.
1 3
4
2
4. Remove the antenna.
Step 1. To remove the antenna, push with the thin spike of SRT±3 (Battery Connector Extractor Tool) forward to release the snaps and lift up the antenna.
NOTE: Be careful not brake the middle frame.
5. |
Remove the A±cover. |
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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.
Page 6 |
Nokia Corporation |
Issue 1 01/2002 |
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PAMS Technical Documentation |
Disassembly & Troubleshooting Instructions |
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6. |
Remove the keymat module. |
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Remove keymat module screws (2 pcs). |
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NOTE: When assembling the screws, use 17 Ncm torque.
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.
Keymat module removed.
7. |
Remove PWB and display. |
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Push from the side to release the PWB.
To remove the display release the snap fixings in the display module.
Issue 1 01/2002 |
Nokia Corporation |
Page 7 |
NSM±4 |
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Disassembly & Troubleshooting Instructions |
PAMS Technical Documentation |
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 Extractor Tool). Battery connector will be released.
9. |
Remove volume switch and key. |
Remove first the volume switch.
Then remove the volume key.
Page 8 |
Nokia Corporation |
Issue 1 01/2002 |
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