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Mitsubishi Electric apricot MS660 Owner's Handbook Manual

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Owner's Handbook



  Summary of Contents for Mitsubishi Electric apricot MS660

  • Page 2 COMPAC Up and running in a few minutes...
  • Page 3 Power Up When have fully connected your system press the Power button to turn the computer on. When the system unit is powered the power indicator on the left of COM PAC the front panel will light up. If nothing happens, check your connections and supply switch.
  • Page 4: The Remote Control

    The Remote Control The optional infra-red remote control offers a friendly user- interface to the inexperienced user. The remote control operates on two AA batteries, which are provided. You need to insert the batteries into the remote control unit in order to use it. Use the diagram opposite to insert the batteries.
  • Page 5 STANDBY: puts the PC into, or restores it from energy saving mode. Further details on the energy saving capabilities of your computer are provided on the last page of this section. If your computer has a TV card fitted, pressing the TV button on the remote control for the first time will activate the TV Wizard.
  • Page 6: Playing Games

    Playing Games To play any of the games provided, you need to insert the appropriate CD into the CD-ROM drive. Press the button on the front of the drive and place the CD label-up on the platter. Push the button again, or gently push the front of the platter to draw it COM PACT back into the drive.
  • Page 7: Low Power Mode

    Please remember... This computer system is shipped with the latest Energy Star power-saving features already activated, allowing you to be more environmentally friendly in your work. It is intended to help reduce global power consumption, and ultimately waste and pollution. This computer system is designed, when left unattended, to enter a ‘Low Power’...
  • Page 9 ® ® Intel, ‘Pentium ’ and ‘Pentium with MMX technology’ are registered trademarks of Intel Corporation. Microsoft, MS-DOS, Windows ® and Windows ® 95 are registered trademarks of Microsoft Corporation in the US and other countries. Other trademarks mentioned within this document and not listed above are the properties of their respective owners.
  • Page 10: Table Of Contents

    CONTENTS Safety and regulatory notices General Standards Power connection guidance Power cable wiring UK ONLY Introducing your computer Your multimedia computer Energy-efficient features Pictorial guides Removing panels The internal layout Using your computer Using the 3.5 diskette drive Using the CD-ROM drive Using the (optional) PD drive Cleaning your drives The sound connections...
  • Page 11 Expansion cards Configuring a card Installing a card System upgrades System memory Upgrading the processor Second hard disk drive New drives/accessories 6/10 Troubleshooting Problems when starting Restoring the software Troubleshooting checklist System disk drives System motherboard Principal features Changing the jumper settings System connectors Replacing the CMOS battery System BIOS and setup...
  • Page 12: Safety And Regulatory Notices

    SAFETY AND REGULATORY NOTICES Electrical The computer uses a safety ground and must be earthed. The system unit AC power cord is its ‘disconnect device’. Ensure that the system unit is positioned close to the AC power outlet and that the plug is easily accessible.
  • Page 13: Standards

    External Speakers (where supplied) Always switch off or disconnect the AC supply before disconnecting any of the speaker leads, whether audio or power. Disconnect the AC supply when equipment is not used for a period of time. To prevent the risk of electric shock, do not remove speaker covers. Connecting the speaker power cord to any other cords or joining cords together can cause fire and risk of electric shock.
  • Page 14: Power Connection Information

    Thermalcote bonding compound The thermal bonding compound used between the system processor and its heatsink can cause skin irritation and stain clothing. Avoid prolonged or repeated contact with skin. Wash thoroughly with soap and water after handling. Avoid contact with eyes and inhalation of fumes. Do not ingest. Power connection information Typical AC plugs 250V...
  • Page 15 Power Cable Connections - UK ONLY This equipment is supplied with an AC power lead that has a moulded, non-removable, 3-pin AC plug. Always replace the fuse with one of the same type and rating which is BSI or ASTA approved to BS1362. Always refit the fuse cover, never use the plug with the fuse cover omitted.
  • Page 16: Introducing Your Computer

    INTRODUCING YOUR COMPUTER This chapter gives you a quick tour of your Apricot multimedia computer. It details the various features of the computer and contains pictorial guides to help you become familiar the various parts of the machine. If you have yet to get your computer up and running for the first time, please refer to the ‘Quick Start Guide’.
  • Page 17: Energy-Efficient Features

    I n t r o d u c i n g y o u r c o m p u t e r ♦ On-board high performance PCI bus video based on an ATI 264GT controller, for enhanced 3-D graphics capabilities, equipped with 2 Mbytes of video memory.
  • Page 18: Pictorial Guides

    I n t r o d u c i n g y o u r c o m p u t e r ♦ VESA BIOS Extensions for Power Management (VBE/PM), for use with energy-efficient monitors that support Display Power Management Signalling (DPMS). Caution Caution Do not attempt to use the computer’s energy-saving features with a...
  • Page 19: Front View

    I n t r o d u c i n g y o u r c o m p u t e r Front View COM PAC Energy saving button and LED Power button Internal speaker grill Front audio connections: (This speaker cuts off when Upper - Speakers external speakers connected)
  • Page 20: Rear View

    I n t r o d u c i n g y o u r c o m p u t e r Rear View 10 10 1 Rear of expansion bay Audio (see chapter 2 for details) VGA port for monitor signal Handles to assist during side panel cable removal...
  • Page 21: Removing Panels

    I n t r o d u c i n g y o u r c o m p u t e r Removing panels For complete access to the motherboard and for fitting expansion boards the main side panel and the top panel both have to be removed.
  • Page 22 I n t r o d u c i n g y o u r c o m p u t e r 10 10 1 Other side panel This panel only needs to be removed for access to the drive bay fixing screws.
  • Page 23: The Internal Layout

    I n t r o d u c i n g y o u r c o m p u t e r The internal layout Please note that for clarity, all the internal ribbon and power connections are not shown. Power supply Processor socket First hard disk...
  • Page 24: Using Your Computer

    USING YOUR COMPUTER You should read this chapter even if you do not read any other. It provides useful information on the correct operation of the drives fitted to your computer and explains the multimedia features. This guide assumes that your computer is up and running. If you have yet to get the computer up and running please refer to the ‘Quick Start Guide’...
  • Page 25 U s i n g y o u r c o m p u t e r the two. The other hole which exists on both disks is the write protect tab (on the underside). Keep diskettes well away from dust, moisture, magnetic objects, and equipment that generates magnetic fields.
  • Page 26: Using The Cd-Rom Drive

    U s i n g y o u r c o m p u t e r Removing a diskette Before attempting to remove a diskette, make sure that the drive is not currently in use (the diskette activity indicator, opposite the drive’s eject button must be unlit).
  • Page 27 U s i n g y o u r c o m p u t e r The CD-ROM LED flashes when the CD-ROM tray is opened, and when it is active (i.e. busy reading information). The CD-ROM drive has the following features: CO MP AC Disc drawer Headphone jack and headphone volume level...
  • Page 28 U s i n g y o u r c o m p u t e r The headphone socket and volume control can be used whilst listening to commercial audio or music CDs (providing you are not using external speakers, or feeding the output to your hi-fi). You can still use all the other various features of your computer whilst you are playing an audio CD.
  • Page 29 U s i n g y o u r c o m p u t e r To eject the drawer manually (for example, during a power failure) you must ensure that the computer is turned off. Then insert a thin metal rod (such as an unwound paper clip) into the emergency eject hole and push, see below: CO MP AC...
  • Page 30: Using The (Optional) Pd Drive

    U s i n g y o u r c o m p u t e r Using the (optional) PD/CD-ROM drive The dual purpose PD/CD drive can read CD-ROM, Photo CD and play audio CDs as well as providing re-writable optical cartridge backup.
  • Page 31 U s i n g y o u r c o m p u t e r Inserting a PD cartridge/ compact disc Warning Warning The PD/CD drive can only accept one type of disk at any one time. Do not try to attempt to load both a CD and PD cartridge at the same time as this will severely damage the drive.
  • Page 32: Cleaning Your Drives

    U s i n g y o u r c o m p u t e r Removing a PD cartridge/compact disc Before attempting to remove a CD or PD cartridge from the drive, ensure that the drive is not currently active (wait for the drive’s busy activity indicator to stop flashing).
  • Page 33: The Sound Connections

    U s i n g y o u r c o m p u t e r Cleaning the CD-ROM or PD drive It is recommended that you occasionally use a specialist CD cleaning disk to clean the lens in the drive as it may become dusty and fail to operate.
  • Page 34 U s i n g y o u r c o m p u t e r Audio inputs 10 10 1 The line-in socket allows the connection of audio sources to be used when monitoring or recording sound. You can connect a personal stereo (tape or CD), or a line-out signal from a high-fidelity tape deck or CD player.
  • Page 35: The Speaker Sound System

    U s i n g y o u r c o m p u t e r The speaker sound system Your system comes with either separately powered speakers, or standard speakers plus a Deep Sound subwoofer unit as an optional extra. 2-12 It is important that the power cord is connected last.
  • Page 36: Customising Your Display Settings

    U s i n g y o u r c o m p u t e r Standard speakers and Deep Sound subwoofer unit 10 10 1 Customising your display settings Your copy of Windows 95 is initially supplied set up for a standard VGA monitor, so that Windows 95 is sure to display correctly whichever monitor you connect.
  • Page 37: The Hard Disk Drives

    U s i n g y o u r c o m p u t e r The hard disk drive Apricot computers are supplied with one internal hard disk drive which is divided into two partitions. They are designated as drives C: and D: in the Windows 95 Explorer software.
  • Page 38: Using Help

    U s i n g y o u r c o m p u t e r Warning Warning The Recovery CD will return your hard disk back to way it was when it left the factory. Please ensure whenever possible that you have separately backed up data files as any software installed since your first power on, or data created since then will be lost during the recovery procedure.
  • Page 39: First Use Of Internet And 'Branding

    FIRST USE OF INTERNET AND ‘BRANDING’ Setting up your free Internet/Fax To set up your free Internet and Fax (available in the UK only, please check with the ‘Free Internet’ card) you need to complete the following steps: Double-click on the following icon on your desktop: The following setup screen will appear: Your name should appear (you entered it to register for Windows 95).
  • Page 40 I n t e r n e t a n d s e c u r i t y Check that the information is correct. If it is not, press the Re-enter Information button to correct the details. If the information is correct press the Information is correct button to continue.
  • Page 41: Branding' Your Computer

    I n t e r n e t a n d s e c u r i t y ‘Branding’ your computer ‘Branding’ or fingerprinting allows personalised information to be stored in part of the computer’s permanent memory. It is easily done using the Apricot Electronic Fingerprinting application, which will start up when the computer has finished setting up Windows 95.
  • Page 42 I n t e r n e t a n d s e c u r i t y Note Note You will be able to change any of the items in your branding details by running the Apricot Electronic Fingerprinting application later and entering the correct password.
  • Page 43: The Multimedia Applications

    THE MULTIMEDIA APPLICATIONS This chapter details instructions on how to access the software which comes with your computer. The Apricot group of multimedia software applications are collectively referred to as the Easy Manager Software. The Apricot Media Manager application The Apricot Media Manager application provides an easy way to schedule the automatic launch of other software such as the TV, CD applications.
  • Page 44 T h e m u l t i m e d i a a p p l i c a t i o n s coloured button on the remote control to take you into the daily view display: To schedule an event for any time of the day select the icon corresponding to the event you wish to schedule.
  • Page 45: Message Centre Application

    T h e m u l t i m e d i a a p p l i c a t i o n s The Apricot Message Centre application The Apricot Message Centre application monitors your incoming messages from the e-mail, fax or telephone systems. The Message Centre LED on the front panel of the machine will flash indicating that you have received a message in the Message Centre.
  • Page 46 T h e m u l t i m e d i a a p p l i c a t i o n s The Apricot Entertainment Centre application The Apricot Entertainment Centre provides you with an interface to the games and multimedia programs which came with your system.
  • Page 47: Power Manager Application

    T h e m u l t i m e d i a a p p l i c a t i o n s The Apricot Power Manager application Intelligent power management features come as standard with your system. These features allow you to leave your system powered 24 hours a day much like your video recorder.
  • Page 48: Internet Connection Application

    T h e m u l t i m e d i a a p p l i c a t i o n s The Apricot Internet Connection application Make sure your modem is connected, as shown on the ‘Apricot Welcome Mat’.
  • Page 49: Tv/Teletext Application

    T h e m u l t i m e d i a a p p l i c a t i o n s The Apricot TV/Teletext application (Optional) Caution Caution Before using the TV/Teletext application, with its setup Wizard, ensure that you have a good and reliable aerial connection.
  • Page 50: Expansion Cards

    EXPANSION CARDS This chapter contains instructions on installing expansion cards in your computer. It is important that you read this chapter before purchasing a card. If, having read the installation instructions, you do not feel confident about installing the upgrade yourself you may wish your supplier or service organisation to fit the card for you.
  • Page 51 E x p a n s i o n c a r d s operating systems) to configure the card automatically when you turn on the computer. You need to use the Add New Hardware utility (which is located in Control Panel) in order to configure the card if Windows 95 does not auto-detect it.
  • Page 52 E x p a n s i o n c a r d s Some of these interrupts are fixed, others can be re-assigned, or freed by disabling the component with BIOS Setup. The following table lists the interrupts used by the computer and shows which may be available for use by expansion cards.
  • Page 53 E x p a n s i o n c a r d s Direct memory access (DMA) channel Some hardware devices can use a DMA channel to access system memory without directly burdening the processor. Computers have DMA channels numbered DMA0 to DMA7. The following table gives details of which ones may be available.
  • Page 54 E x p a n s i o n c a r d s I/O ports Default assignment 0C0h-0DFh DMA controller 2 0F0h, 0F1h Math coprocessor busy (clear/reset) 0F8h-0FFh Math coprocessor 1F0h-1F7h Hard disk drive controller 200h-207h Game I/O (disable) 220h-22Fh, 230h-233Fh Sound blaster system 240h-24Fh, 250h-253Fh...
  • Page 55: Installing The Card

    E x p a n s i o n c a r d s between C8000h and DFFFF in upper memory. With most modern expansion cards this is fully automatic. The card’s documentation should list its possible base memory addresses. You will also need to know how much memory the card has, so that you can leave the right gap between this card’s base address and the next.
  • Page 56 E x p a n s i o n c a r d s 10 10 1 Full length PCI Full length ISA Full length PCI/ISA shared slot If the card you are installing is configured by the means of jumpers or switches, check that it is correctly configured before proceeding.
  • Page 57 E x p a n s i o n c a r d s Secure the card by replacing the screw that you removed in Step 4. Connect any necessary signal cables to the card. If the card that you are installing makes use of the ATI Multimedia Channel (AMC) connector then you need to connect the ribbon cable to the AMC/VFC connector on the motherboard.
  • Page 58: System Upgrades

    SYSTEM UPGRADES This chapter contains instructions on installing upgrades to your system. Memory, processors, hard drives and other drives are covered. Caution Caution Apricot Computers Ltd. tests many types of components from a variety of manufacturers and all of our upgrade parts are guaranteed. The quality, reliability, or compatibility of components obtained from any other source cannot be guaranteed and may invalidate your warranty.
  • Page 59 S y s t e m U p g r a d e s Adding more system memory The computer’s motherboard is fitted with sockets for up to four SIMMs (single in-line memory modules). You may need to add more memory if you want to run complex operating systems or large application programs.
  • Page 60 S y s t e m U p g r a d e s Total Memory Bank 1 sockets Bank 2 sockets 8 Mb 4 Mb 4 Mb 16 Mb 4 Mb 4 Mb 4 Mb 4 Mb 16 Mb 8 Mb 8 Mb 24 Mb...
  • Page 61 S y s t e m U p g r a d e s To install a SIMM 1. Take the SIMM out of its anti-static packaging. Hold it by its edges and avoid touching the metal contacts. Note Note The SIMM is not symmetrical.
  • Page 62: Upgrading The Processor

    S y s t e m U p g r a d e s Reconfiguring the system The first time you turn on the computer after adding or removing SIMMs the memory change will be automatically detected by the power-on self-test (POST). All you have to do is confirm the new configuration in the BIOS Setup utility (refer to ’System BIOS and Setup’...
  • Page 63 S y s t e m U p g r a d e s Caution Caution If you are unfamiliar with the recommended anti-static precautions, refer to the antistatic section at the rear of this handbook. If the computer was turned on prior to commencing this procedure, wait at least 15 minutes for the processor to cool down before proceeding.
  • Page 64 S y s t e m U p g r a d e s Fitting the new processor To fit the upgrade processor: Take the upgrade processor out of its anti-static packaging. Hold the processor by its edges and avoid touching the metal pins.
  • Page 65: Second Hard Disk Drive

    S y s t e m U p g r a d e s Caution Caution If the processor is misaligned it will not go into the socket, and any attempt to force it will damage the processor, or the socket, or both Move the securing lever to the locked position.
  • Page 66 S y s t e m U p g r a d e s Installing the drive To install the hard disk drive: Turn off the computer and unplug all power cords. Take suitable anti-static precautions and remove the system side panels.
  • Page 67: New Drives/Accessories

    S y s t e m U p g r a d e s Fitting new drives/accessories The new drive should have fixing and installation instructions with it, making it a fairly simple task. If you do not feel confident about the procedure you could have your supplier or service organisation complete it for you.
  • Page 68: Troubleshooting

    TROUBLESHOOTING This chapter offers advice if you suspect a fault with your computer. It is concerned mainly with problems caused by the computer itself, problems more often arise from other sources such as your operating system or application software. It must also be remembered that it can be very easy to leave off or dislodge cables and connectors inside the computer when fitting expansion cards, or upgrading the motherboard, or indeed anything that may require temporary removal of the system cover.
  • Page 69 T r o u b l e s h o o t i n g Power-on self-test (POST) Whenever the computer is turned on, the power-on self-test (POST) routine tests various hardware components, including memory, and compares the actual configuration of the computer with that recorded in configuration (CMOS) memory.
  • Page 70 T r o u b l e s h o o t i n g Number of beeps Meaning No beeps If no beeps are heard at all the speaker may be disconnected or there may be a speaker circuitry fault.
  • Page 71 T r o u b l e s h o o t i n g Number of beeps Meaning 1-3-3 Slave DMA register test failure 1-3-4 Master DMA register test failure 1-4-1 Master interrupt mask register test failure 1-4-2 Slave interrupt mask register test failure 1-4-4 Keyboard controller test failure 2-2-2...
  • Page 72: Restoring The Software

    T r o u b l e s h o o t i n g Boot failure message Explanation problem persists, insert a system diskette, press F1, backup the data held on the defective hard disk and try reformatting it. No boot device available This may indicate a fault in the diskette or hard disk drive, or perhaps a damaged...
  • Page 73 T r o u b l e s h o o t i n g Power Check that the AC power supply is switched on, and that the fuse in the AC plug (if any) has not blown. If the system still does not seem to be getting power, obtain another power cord from your supplier.
  • Page 74 T r o u b l e s h o o t i n g ◊ Check that the modem’s IRQ and COM settings do not conflict with other peripherals already present in your system. Go to 9. ◊ Check that the modem is correctly seated in the socket and securely screwed into place.
  • Page 75 T r o u b l e s h o o t i n g Connection initially OK, garbled after a while, or connection initially OK, sporadically garbled. ◊ Check that error correction, MNP or V.42, is enabled before dialling. Modem will not hang up after a call.
  • Page 76: System Disk Drives

    T r o u b l e s h o o t i n g Remote control First of all check the batteries. Try the batteries in a torch or something similar, replace them if necessary. Check also that the front window is not obscured on either the system unit or the handset.
  • Page 77 T r o u b l e s h o o t i n g Optional PD drive Check the type of media in the drive, CD or PD disk cartridge. Remember that the PD cartridge needs the disk inside to be formatted to allow it to be written to.
  • Page 78: System Motherboard

    SYSTEM MOTHERBOARD Principal features Parallel Com 2 Com 1 Video (optional) Mouse Key/Bd Memory sockets 1, 2 (SIMMs) 11 Radio card audio connector Memory sockets 3, 4 (SIMMs) 12 TV card audio connector PL20, Front panel connector 13 CD audio connector Pls 3, 4, 6, 7 Case feature connectors 14 External ports CMOS Battery (type CR2032)
  • Page 79: Changing The Jumper Settings

    S y s t e m m o t h e r b o a r d Changing the Jumper settings PL100 PL22 PL32 PL37 PL36 PL11 PL10 PL3, PL4, PL6, & PL7 Caution Caution Do not alter any jumper settings under normal operation. You may cause permanent damage to the motherboard or its components.
  • Page 80 S y s t e m m o t h e r b o a r d Clear BIOS settings, PL8 Moving the link to pins 2-3, from the default position 1-2, disconnects the battery from the CMOS and will erase all the system settings.
  • Page 81 S y s t e m m o t h e r b o a r d Internal speaker connections, PL2 (if fitted) Pins Function Connection PL2 Stereo - Left Left (stereo) speaker = pins 1 and 2 Audio ground Mono Mono = pins 3 and 2 Link...
  • Page 82: System Connectors

    S y s t e m m o t h e r b o a r d System Connectors The following system connectors are used to connect various features to the motherboard. You should not normally need to disturb these connections but they may become dislodged during work inside the system casing.
  • Page 83: Replacing The Cmos Battery

    S y s t e m m o t h e r b o a r d Replacing the CMOS battery The battery has an average life of 3-5 years. If you have to reconfigure the computer every time you turn it on, the battery has discharged and needs replacing.
  • Page 84: System Bios And Setup

    SYSTEM BIOS AND SETUP BIOS (pronounced ‘bye-oss’) stands for basic input/output system. The BIOS operates at the boundary between the computer’s hardware (the processor, memory and so on) and its software (the operating system and your program), and effectively mediates between the two.
  • Page 85: Entering Setup

    S y s t e m B I O S a n d S e t u p Entering Setup Immediately after switching on the Mitsubishi logo is displayed at the top right hand corner of the screen: While this is visible you can press the F1 key to start the BIOS Setup utility.
  • Page 86: Control Keys

    S y s t e m B I O S a n d S e t u p Control keys A number of keys are used to move around the BIOS Setup utility, select items on the screen and change the current configuration. The two lines at the bottom of the screen indicate what you can do at any given time.
  • Page 87: Main Menu Screen

    S y s t e m B I O S a n d S e t u p Main menu screen When you start BIOS Setup a main menu screen appears with the following options: • • System Summary • • Product Data •...
  • Page 88 S y s t e m B I O S a n d S e t u p System Summary This page cannot be edited, but gives a summary of the system main settings. Changes made in other pages will be reflected here. Make a note (on page 13) of the information on this page before you progress any further or make any changes.
  • Page 89 S y s t e m B I O S a n d S e t u p Mouse This option enables the use of a mouse. The actual presence of the mouse can then be detected by POST. You should not normally disable this setting.
  • Page 90 S y s t e m B I O S a n d S e t u p Mbytes capacity. You might need to select Standard CHS if your operating system does not support Extended CHS for large drives. Hard Disk Drives Hard disk size and type is auto-detected when the computer is turned on, but other parameters can be manually set for each drive should it be required.
  • Page 91 S y s t e m B I O S a n d S e t u p System Security This is to allow you to set, change or delete passwords for either general or administrator use. Power-on Password This option allows you to set a password that is required every time the computer is turned on or rebooted.
  • Page 92 S y s t e m B I O S a n d S e t u p The user is allowed three attempts to enter the correct password. If they fail the computer is “locked” and must be switched off. Turning the computer on again restarts the sequence.
  • Page 93 S y s t e m B I O S a n d S e t u p Displayless Operation If this option is “Disabled”, POST will look for an attached monitor and report an error an error if it is faulty or missing; if “Enabled”, POST will allow the computer to start without a monitor.
  • Page 94 S y s t e m B I O S a n d S e t u p Advanced Setup Any settings changed here, if incorrect, may cause the system to halt or may cause your software to malfunction. A warning about this appears on the screen when you choose Advanced Setup from the menu.
  • Page 95 S y s t e m B I O S a n d S e t u p Plug and Play Enabling the Plug and Play adapter configuration will auto-configure any Plug and Play cards but any ISA adapters which do not support Plug and Play will require the system resources to be registered.
  • Page 96: Error Messages

    S y s t e m B I O S a n d S e t u p Error Messages If you get an error which is not listed or the problem persists, call your supplier or authorised maintainer. Code Cause Code Cause...
  • Page 97: Note Down Your Bios Settings

    S y s t e m B I O S a n d S e t u p Notes Note down your BIOS settings for reference. 9/14 MS660 OWNER’S HANDBOOK...
  • Page 98: Important Information

    IMPORTANT INFORMATION Suitable antistatic precautions Cleaning and transporting your computer Fall-back password MS660 OWNER’S HANDBOOK...
  • Page 99 ANTI-STATIC PRECAUTIONS Static electricity can cause permanent damage to electronic components. You should be aware of this risk, and take precautions against the discharge of static electricity into the computer. Static electricity can be generated by moving on a chair, brushing against desks or walls, or simply walking across an ordinary carpet.
  • Page 100 A n t i - s t a t i c p r e c a u t i o n s ♦ Handle static-sensitive items with extreme care. Hold expansion cards and add-on components only by their edges, avoiding their electrical contacts. Never touch the components or electrical contacts on the motherboard or on expansion cards.
  • Page 101 CLEANING AND TRANSPORTING Cleaning the computer Do not use solvents or abrasives, they might damage the system unit surfaces. Do not use aerosols or sprays near any part of the system, in particular, air vents or grills, ports, or removable-media drives, as microscopic droplets can remain in the air for some time and then be sucked in when you switch on and cause irreparable damage.
  • Page 102 C l e a n i n g a n d T r a n s p o r t i n g The keyboard When necessary, clean the keycaps with a slightly damp clean cloth and a minimum amount of a non-abrasive cleaning agent. Regularly check the keyboard cable for wear and tear, particularly near table or shelf edges.
  • Page 103 C l e a n i n g a n d T r a n s p o r t i n g Inside the mouse there are three small rollers. Using a cotton swab moistened with a solvent cleaner, gently wipe off any oil or dust that has collected on the rollers, rotating them to reach all of their surfaces.
  • Page 104 FALL-BACK PASSWORD The fall-back password is a 12-digit number, unique to your computer, that is indelibly encoded in your computer's read-only memory. It is intended for use with your computer’s anti-theft features (described in Chapter 1, of this manual). If you ever forget your usual password, you can use the fall-back password instead.