NEC M320 User Manual
NEC
Versa M320
Disassembly Manual
Table of contents
Overview.................................................................................................................................................................3
Technician Notes....................................................................................................................................................3
Disassembly Instructions........................................................................................................................................3
Reassembly Instructions........................................................................................................................................3
Required Tools .......................................................................................................................................................3
Hazardous Voltage.................................................................................................................................................4
Avoid Electrostatic Discharge.................................................................................................................................4
Power Supply Unit..................................................................................................................................................4
Removing the Battery.............................................................................................................................................5
Removing the Hard Disk Drive...............................................................................................................................5
Removing the Memory Module ..............................................................................................................................6
Removing the Wireless LAN & MDC Modem Module............................................................................................7
Removing the Keyboard.........................................................................................................................................8
Removing the optical disk drive..............................................................................................................................9
Removing the CPU...............................................................................................................................................10
Removing the LCD Module..................................................................................................................................14
Removing the LCD Panel.....................................................................................................................................16
Removing the Top Cover .....................................................................................................................................18
Removing the Touch Pad.....................................................................................................................................20
Removing the Floppy Disk Drive..........................................................................................................................21
Removing the Audio Board ..................................................................................................................................22
Removing the Main Board....................................................................................................................................23
Removing the speakers........................................................................................................................................25
DIP Switch Setting................................................................................................................................................26
Screws..................................................................................................................................................................27
Notice ...................................................................................................................................................................28
NEC Versa M320 Disassembly Manual
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Overview
This document contains step-by-steps disassembly instructions for the Versa M320 chassis. The instructions are
illustrated where necessary with images of the part that is being removed or disassembled. Furthermore, the screws
that are removed are shown next to the image of the parts themselves.
NEC reserves the right to make changes to the Versa M320 chassis without notice.
Technician Notes
Only technicians authorized by NEC Computers International BV should attempt to repair this equipment. All
troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the
complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component
level or to make modifications to any printed wiring board. Improper repairs can create a safety hazard. Any
indication of component replacement or printed wiring board modifications may void any warranty or exchange
allowances.
Disassembly Instructions
When disassembling the system unit, follow these general rules:
Do not disassemble the system into parts that are smaller than those specified in the instructions.
Label all removed connectors. Note where the connector goes and in what position it was installed.
Turn off the power and disconnect all power and all options.
Reassembly Instructions
Reassembly is the reverse of the disassembly process. Use care to ensure that all cables and screws are returned
to their proper positions. Check that no tools or any loose parts have been left inside the chassis. Check that
everything are properly installed and tightened.
Required Tools
All disassembly procedures can be perform using the following tools:
PH 0x60 Philips screwdriver
PH 0x40 Philips screwdriver
4.0 x 60 Flat screwdriver
2.0 x 30 Flat screwdriver
SW5,0 Spacer screwdriver
Small tweezers
Pin
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Hazardous Voltage
There is hazardous voltage present inside the computer
when it is connect to an AC supply, even when the
computer’s power switch is off. Exposure to hazardous
voltage could cause personal injury. To avoid risk of injury,
contact an Authorized Service Provider for proper
(un)installation of optional hardware devices.
Avoid Electrostatic Discharge
Electrostatic electricity can easily damage circuit cards and
integrated circuits (ICs). To reduce risk of damage, store
them in protective packaging whenever they are not
installed in your system.
Add-in cards can be extremely sensitive to ESD and always
require careful handling. After removing the card from the
computer, place the card flat on a grounded, static-free
surface, component-side up. Use a conductive foam pad if
available, but not the card wrapper. Do not slide the card
over any surface.
Before you install or remove memory modules, video
memory, disk drives, circuit cards or other devices, protect
them from static electricity. To do so, make sure your
computer’s power switch is OFF. Then, unplug the
computer’s AC power cord. Before picking up the device you
(un)install, you should wear an anti-static wrist wrap
(available at electronic supply stores). Be sure to connect
the wrist wrap to an unpainted metal portion of the computer
chassis. As an alternative, you can dissipate electrostatic
build-up by touching an unpainted metal portion of the
computer chassis with one hand. Then touch the device you
are (un)installing with the other hand, and maintain
continuous contact with it until it is (un)installed in the
computer.
Power Supply Unit
Under no circumstances should you attempt to disassemble
the power supply. The power supply contains no userserviceable parts. Inside the power supply are hazardous
voltages that can cause serious personal injury. Always
return a defective power supply to your dealer.
WARNING
Ensure that the computer is disconnected from
its power source and from all
telecommunications links, networks, or modem
lines whenever the chassis cover is removed.
Do not operate the computer with the cover
removed.
AVERTISSEMENT
Assurez-vous que le système est débranché de
son alimentation ainsi que de toutes les
liaisons de télécommunication, des réseaux, et
des lignes de modem avant d’enlever le capot.
Ne pas utiliser le système quand le capot est
enlevé.
WARNUNG
Das System darf weder an eine Stromquelle
angeschlossen sein noch eine Verbindung mit
einer Telekommunikationseinrichtung, einem
Netzwerk oder einer Modem-Leitung haben,
wenn die Gehäuseabdeckung entfernt wird.
Nehmen Sie das System nicht ohne die
Abdeckung in Betrieb.
ADVERTENCIA
Asegúrese de que cada vez que se quite la
cubierta del chasis, el sistema haya sido
desconectado de la red de alimentación y de
todos lo enlaces de telecomunicaciones, de red
y de líneas de módem. No ponga en
funcionamiento el sistema mientras la cubierta
esté quitada.
WAARSCHUWING
Zorg er voor dat alle verbindingen van en naar
de computer (stroom, modem netwerk, etc)
verbroken worden voordat de behuizing
geopend wordt. Zet de computer nooit aan als
de behuizing geopend is.
AVVERTENZA
Prima di rimuovere il coperchio del telaio,
assicurarsi che il sistema sia scollegato
dall’alimentazione, da tutti i collegamenti di
comunicazione, reti o linee di modem. Non
avviare il sistema senza aver prima messo a
posto il coperchio
NEC Versa M320 Disassembly Manual
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Removing the Battery
Perform the following steps to remove the battery:
1. Make sure to power off the Versa M320.
2. Turn the unit upside down.
3. Unlock the battery and slide it out of its place as the arrow shows in Fig. 1
Fig. 1 Removing the battery
Removing the Hard Disk Drive
To remove the hard disk drive, first remove the battery (see Removing the Battery), then
perform the following steps:
4. Remove the screws as shown in Fig. 2
Fig. 2 Removing the Hard disk drive cover screws
5. Lift up the hard disk drive and disconnect it as shown in Fig. 3
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Fig. 3 Disconnecting the hard disk drive
Note: Use extra care when disconnecting the HDD connector
6. Unscrew the four screws on both sides of the hard disk drive as shown in Fig. 4
Fig. 4 Unscrewing the hard disk drive bracket screws
Removing the Memory Module
To remove the Memory Module, first remove the battery (see Removing the Battery), then
perform the following steps:
1. Release the one screw retaining the memory module slot cover.
Fig. 5 Removing the screw retaining the memory module slot cover
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2. Unclip memory module as shown in Fig. 6
Fig. 6 Removing the memory module
3. Remove the memory module from its slot and put it aside.
Removing the Wireless LAN & MDC Modem Module
To remove the Wireless and MDC Modem Module, first remove the battery (see Removing the
Battery), then perform the following steps:
1. Remove the screw retaining the mini PCI slot cover as shown in Fig. 7
Fig. 7 Removing the screws screw retaining the mini PCI slot cover
2. Disconnect the wireless antenna wires from the wireless module and relea se the two
screws retaining the MCD Modem.
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Fig. 8 Wireless LAN & MCD Modem Module
3. Unclip and remove the wireless LAN module.
4. Carefully lift up the MDC modem module.
5. Disconnect the cable attached to the MDC modem and put the modem aside.
Removing the Keyboard
To remove the Keyboard, first remove the battery (see Removing the Battery), then perform
the following steps:
1. Use a flat screwdriver to lift up the keyboard cover as shown in Fig. 9
Fig. 9 Removing the keyboard cover
2. Lift up the keyboard and disconnect it from the system as shown in Fig. 10
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Fig. 10 Removing the keyboard flat cable
Removing the optical disk drive
To remove the ODD, first remove the keyboard (see Removing the Keyboard), then perform
the following steps:
1. Remove the screws retaining the optical drive connector as shown in Fig. 11
Fig. 11 Releasing the optical drive
2. Remove the optical drive out from the base unit as shown in Fig. 12
Fig. 12 Removing the optical drive
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