Mitsubishi Electric Apricot LS340 Owner's Handbook Manual
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Mitsubishi Electric Apricot LS340 Owner's Handbook Manual

Mitsubishi Electric Apricot LS340 Owner's Handbook Manual

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LS340
VS340
Owner's Handbook
NATIONAL
ACCREDITATION
OF CERTIFICATION
BODIES

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Summary of Contents for Mitsubishi Electric Apricot LS340

  • Page 1 LS340 VS340 Owner’s Handbook NATIONAL ACCREDITATION OF CERTIFICATION BODIES...
  • Page 2 APRICOT LS/VS340 OWNER’S HANDBOOK DITION...
  • Page 3 All rights reserved. No use or disclosure or reproduction of this manual, in any form, is permitted without prior written consent from the publishers. Copyright © Apricot Computers Limited 1996. All rights reserved. Published by: Mitsubishi Electric PC Division Apricot Computers Limited 3500 Parkside Birmingham Business Park...
  • Page 4 S a f e t y a n d R e g u l a t o r y N o t i c e s 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’.
  • Page 5 This system complies with the CE Marking Directive and its strict legal requirements. Use only parts tested and approved by Mitsubishi Electric PC Division. Failure to do so may result in invalidating both the compliance and your warranty. All expansion cards...
  • Page 6 S a f e t y a n d R e g u l a t o r y N o t i c e s Power Connection Typical AC plugs 125V 250V 250V 250V 250V BS1363A SHUCO NEMA 5-15P SRAF 1962/DB16/87 ASE 1011 U.
  • Page 7 S a f e t y a n d R e g u l a t o r y N o t i c e s Connecting to the AC power supply Important Any peripheral equipment that requires an AC power cord must be earthed. Use the procedure below to connect the components together.
  • Page 8 S a f e t y a n d R e g u l a t o r y N o t i c e s 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.

  • Page 9: Table Of Contents

    C o n t e n t s CONTENTS Introducing... Unpacking Pictorial guide to the system unit Summary of features Getting Started General advice Connecting the components Turning on and booting the computer Backing-up the pre-installed software Customising your display settings Using the 3.5-inch diskette drive Using Help 2/10...
  • Page 10 C o n t e n t s Start Options 3/10 Advanced Setup 3/11 Plug and Play 3/12 Error Log 3/13 Power Management 3/13 Using CD-ROMs and Tape Drives Using a CD-ROM drive Using a PD/CD drive Using a Travan tape drive Using a DDS tape drive 4/10 Maintaining and Transporting...
  • Page 11 C o n t e n t s Troubleshooting Problems when starting Troubleshooting checklist Inside the System Unit Anti-static precautions Opening the system unit Motherboard layout Changing jumper settings System connectors Replacing the configuration battery Technical Information Specifications Physical characteristics Electrical characteristics APRICOT 340 OWNER’S HANDBOOK...

  • Page 12: Introducing

    I n t r o d u c i n g INTRODUCING . . . This chapter gives you a quick tour of your new Apricot computer. As soon as you’ve unpacked the components and familiarised yourself with them, you should progress to the next chapter, “Getting Started”.

  • Page 13: Pictorial Guide To The System Unit

    I n t r o d u c i n g Pictorial guide to the system unit APRICOT LS/VS340 OWNER’S HANDBOOK...
  • Page 14 SCSI tape drive is in use (depending on the operating system). infrared sensor: fitted only on Apricot LS340 models with a built-in LOC Technology system (i.e. the LS Security Card). speaker grille: Apricot LS340 models have internal stereo speakers.
  • Page 15 I n t r o d u c i n g APRICOT LS/VS340 OWNER’S HANDBOOK...
  • Page 16 I n t r o d u c i n g AC power outlet: where the monitor power cord can plug in. voltage selection switch: the system unit can be set to operate with a 100-120 V or 220-240 V AC power supply. AC power inlet: where the system unit power cord plugs in.

  • Page 17: Summary Of Features

    The Apricot 340 range is divided into two series. The economical VS-series (Apricot VS340) and the business-minded LS-series (Apricot LS340). Standard features The standard features of the range include: ♦...
  • Page 18 I n t r o d u c i n g ♦ 1.44 Mbyte 3.5" diskette drive; 3.5" hard disk drive bay with room for two one-inch drives (various capacities); one 5.25" removable-media drive bay. ♦ Peripheral Component Interconnect (PCI) and Industry Standard Architecture (ISA) expansion card slots: one full- length shared PCI/ISA slot, one full-length ISA slot, and one half-length ISA slot.

  • Page 19: Getting Started

    G e t t i n g S t a r t e d GETTING STARTED You should read this chapter even if you do not read any other. It provides important information to help you site, connect, power and configure the computer. This chapter will tell you all you need to know in order to start work.

  • Page 20: Connecting The Components

    G e t t i n g S t a r t e d Do not allow any cables, particularly power cords, to trail across the floor where they can be snagged by people walking past. Warning The computer uses the system unit AC power cord as its “disconnect device”.

  • Page 21: Turning On And Booting The Computer

    G e t t i n g S t a r t e d Connect the system unit power cord between the AC power inlet on the rear of the system unit and a nearby, grounded AC power outlet. 10. Where appropriate, connect power cords between your peripherals and nearby, grounded AC power outlets.
  • Page 22 G e t t i n g S t a r t e d System diskette A system diskette is a diskette bearing at least the rudiments of an operating system. If the computer finds such a diskette in the diskette drive, it boots from it.
  • Page 23 G e t t i n g S t a r t e d Why your computer may seem to stop working Your computer has a built-in energy-saving feature. If you leave it for a while without doing anything, it goes into a special low-power Standby mode.

  • Page 24: Backing-Up The Pre-Installed Software

    G e t t i n g S t a r t e d To turn off the computer, simply press the P button again. OWER The power indicator on the button goes out. If the monitor is powered from the system unit, it will be turned off at the same time. After you turn the computer off, wait at least 5 seconds before turning it on again.

  • Page 25: Customising Your Display Settings

    G e t t i n g S t a r t e d Customising your display settings Your pre-installed copy of Windows 95 or Windows for Workgroups is configured for a standard VGA monitor resolution (640 x 480 pixels), so that Windows is sure to display correctly whatever monitor you have.

  • Page 26: Using The 3.5-Inch Diskette Drive

    G e t t i n g S t a r t e d Using the 3.5-inch diskette drive The 3.5-inch diskette drive can read and write double-sided diskettes with a formatted capacity of either 1.44 Mbytes (if marked “HD” or “high density”) or 720 Kbytes (if unmarked, or marked “DD”...
  • Page 27 G e t t i n g S t a r t e d Removing a diskette Before attempting to remove a diskette, make sure that the drive is not currently in use (the diskette activity indicator on the computer’s front bezel must be unlit). Press the button on the drive.

  • Page 28: Using Help

    G e t t i n g S t a r t e d Using Help Along with the software pre-installed on your computer’s hard disk, you will often find one or more Apricot Help files. These will explain any special features of the system, and tell you how to install the software needed to exploit those features.

  • Page 29: Using The Bios Setup Utility

    U s i n g t h e B I O S S e t u p U t i l i t y USING THE BIOS SETUP UTILITY 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 programs).

  • Page 30: Starting Bios Setup

    U s i n g t h e B I O S S e t u p U t i l i t y Starting BIOS Setup To start the BIOS Setup utility: Turn on or restart your computer. Wait until the Mitsubishi Electric logo appears in the top left corner of the screen. Press the 1 key.

  • Page 31: Control Keys

    U s i n g t h e B I O S S e t u p U t i l i t y 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. Some items are for information only.

  • Page 32: Main Menu Screen

    U s i n g t h e B I O S S e t u p U t i l i t y Main menu screen When you start BIOS Setup a main menu screen appears with the following options: •...

  • Page 33: System Summary

    U s i n g t h e B I O S S e t u p U t i l i t y System Summary This page cannot be edited, but gives a summary of the main system settings. Changes made in other pages will be reflected here. Make a note of the information on this page before you make any changes.
  • Page 34 U s i n g t h e B I O S S e t u p U t i l i t y Mouse This option enables the use of a mouse. The actual presence of a mouse can then be detected by POST. You should not normally disable this option.

  • Page 35: Date And Time

    U s i n g t h e B I O S S e t u p U t i l i t y IDE Translation Mode Select Extended CHS (cylinder, head, sector) to enable the scheme that allows the BIOS to access hard disk drives of greater than 504 Mbytes capacity.

  • Page 36: System Security

    The password options are intended for computers that lack more sophisticated security systems. You should not use these options on an Apricot LS340 computer fitted with an Apricot LS Security Card. Power-on Password This option allows you to set a password that is required every time the computer is turned on or rebooted.
  • Page 37 U s i n g t h e B I O S S e t u p U t i l i t y A dialog asks you to confirm that you want to replace any existing power-on password. Press to confirm (or otherwise).

  • Page 38: Start Options

    U s i n g t h e B I O S S e t u p U t i l i t y Start Options Certain features can be set or enabled automatically when the computer starts. Keyboard NumLock State If set to On, the keys on the numeric keypad (on the right-hand side of the keyboard) will produce numbers when pressed.

  • Page 39: Advanced Setup

    U s i n g t h e B I O S S e t u p U t i l i t y Note that if the First Startup Device is set to Disabled, the computer will be unable to boot. The possible settings depend on the number and type of devices that are installed in your computer.

  • Page 40: Plug And Play

    U s i n g t h e B I O S S e t u p U t i l i t y reasons: first, ROM has (relatively) long access times and the processor can access RAM faster than ROM; second, the contents of RAM can be cached for even greater performance.

  • Page 41: Error Log

    U s i n g t h e B I O S S e t u p U t i l i t y use, but must know about them so as to automatically configure any “Plug and Play” devices and PCI cards to avoid resource conflicts. There is a separate option for each resource: memory, I/O ports, DMA channels and interrupts.
  • Page 42 U s i n g t h e B I O S S e t u p U t i l i t y slows down, but the operating system and your programs continue to run, although slowly. You can wake the computer again by pressing any keyboard key.

  • Page 43: Using Cd-Roms And Tape Drives

    U s i n g C D - R O M s & T a p e D r i v e s USING CD-ROMS AND TAPE DRIVES This chapter contains information about the various optional removable-media drives that are available. These include: ♦...

  • Page 44: Using A Cd-Rom Drive

    U s i n g C D - R O M s & T a p e D r i v e s Using a CD-ROM drive With the appropriate software support, a CD-ROM drive can retrieve multimedia data from CD-ROM discs and multisession Photo-CD discs.
  • Page 45 U s i n g C D - R O M s & T a p e D r i v e s Inserting a compact disc Press the button on the front of the drive. EJECT Place the CD face up on the platter. Push the button again, or gently push the front of the EJECT...

  • Page 46: Using A Pd/Cd Drive

    U s i n g C D - R O M s & T a p e D r i v e s Using a PD/CD drive The dual-purpose PD/CD drive can read CD-ROM and Photo CD discs, play audio CDs and provide re-writable optical cartridge backup.
  • Page 47 U s i n g C D - R O M s & T a p e D r i v e s Inserting a PD cartridge or compact disc Press the button on the front of the drive. EJECT Place the PD cartridge or compact disc face up on the platter (see diagram).
  • Page 48 U s i n g C D - R O M s & T a p e D r i v e s Press the button. The drive mechanism disengages and EJECT the platter is ejected. Caution Do not eject a PD cartridge, or turn off the computer, while the drive’s activity indicator is flashing.

  • Page 49: Using A Travan Tape Drive

    U s i n g C D - R O M s & T a p e D r i v e s Using a Travan tape drive The FTD Travan tape drive uses the on-board diskette/floppy disk interface and so does not require an additional drive controller card like most other tape drives.
  • Page 50 U s i n g C D - R O M s & T a p e D r i v e s Carefully push the cartridge in a bit further until it engages with the drive mechanism. Once the cartridge is correctly loaded, it protrudes about 12 mm from the drive.
  • Page 51 U s i n g C D - R O M s & T a p e D r i v e s Keep tape cartridges well away from magnetic objects, and equipment that generates magnetic fields (for example, your computer’s monitor).

  • Page 52: Using A Dds Tape Drive

    The drive automatically detects the format of the cartridge when it is inserted. Caution Use only cartridges bearing the DDS symbols. You cannot play audio DAT cartridges with these drives, even on Apricot LS340 systems. 4/10 APRICOT LS/VS340 OWNER’S HANDBOOK...
  • Page 53 U s i n g C D - R O M s & T a p e D r i v e s Interpreting the LED indicators There are two LED (light-emitting diode) indicators on the drive’s front panel. The Activity (green) and Attention (amber) LEDs show the status of the drive.
  • Page 54 U s i n g C D - R O M s & T a p e D r i v e s Note By default, the drive is configured to recognise DDS Media Recognition System (MRS) cartridges. If a non-MRS cartridge is inserted, you will only be able to read it, not write to it.
  • Page 55 U s i n g C D - R O M s & T a p e D r i v e s The tape log, which includes a record of data integrity failures, cannot be updated while the cartridge is write-protected. It follows that the tape log becomes inaccurate if a cartridge is used while write-protected, and the Media Caution status cannot be relied upon to determine if the cartridge needs to be copied and replaced.

  • Page 56: Maintaining And Transporting

    M a i n t a i n i n g & T r a n s p o r t i n g MAINTAINING AND TRANSPORTING This chapter provides information on how to care for the computer (excluding the removable-media drives). You’ll find that it requires little physical maintenance other than occasional cleaning.
  • Page 57 M a i n t a i n i n g & T r a n s p o r t i n g The keyboard When necessary, clean the keycaps with a slightly damp cloth and a minimum amount of a non-abrasive cleaning agent. Take care not to spill any liquid onto the keyboard.

  • Page 58: Transporting The Computer

    M a i n t a i n i n g & T r a n s p o r t i n g Put the ball back in its socket and replace the plastic cover. It should click into place. Transporting the computer Use common sense when handling the computer;...
  • Page 59 M a i n t a i n i n g & T r a n s p o r t i n g Warning It is imperative that the computer is set to the correct voltage range before use. If not, the machine may be irreparably damaged. The computer can function within two alternative AC power supply ranges, according to the position of the voltage selection switch on the rear of the system unit:...

  • Page 60: Adding Expansion Cards

    A d d i n g E x p a n s i o n C a r d s ADDING EXPANSION CARDS Expansion cards (also known as expansion boards or adapter cards) are small self-contained circuit boards which extend the capabilities of the computer.

  • Page 61: Configuring The Card

    Slot 1 (lower) This slot can accommodate a half-length ISA card (only half-length because the processor gets in the way). In Apricot LS340 systems, this slot may be occupied by an Apricot LS Security Card. Configuring the card Part of the installation procedure for ISA expansion cards, and some PCI cards, involves setting up or configuring the card so it works correctly in the computer.
  • Page 62 A d d i n g E x p a n s i o n C a r d s devices in the computer. In other words, the settings must not conflict. The documentation accompanying the card should tell you whether the card supports Plug and Play, or if not, how to configure it.
  • Page 63 IRQ0 System IRQ1 Keyboard controller IRQ2 System IRQ3 Serial port B IRQ4 Serial port A IRQ5 Parallel port (alternative) Audio in Apricot LS340 models IRQ6 Diskette controller IRQ7 Parallel port IRQ8 Real time clock IRQ9 IRQ10 IRQ11 IRQ12 Mouse IRQ13...
  • Page 64 A d d i n g E x p a n s i o n C a r d s Default assignment DMA0 DMA1 Parallel port in ECP mode (alternate) 8-bit audio (only Apricot LS340 models) DMA2 Diskette/floppy disk controller DMA3 Parallel port in ECP mode...
  • Page 65 A d d i n g E x p a n s i o n C a r d s I/O ports Default assignment 2F8h-2FFh Serial port B 300h-301h Audio: MIDI 330h-331h Audio: MIDI (alternate) 378h-37Fh Parallel port 1 388h-38Fh Audio: FM synthesiser 3B0h-3BFh Monochrome display and printer adapter...
  • Page 66 A d d i n g E x p a n s i o n C a r d s More about memory addresses Memory addresses are always written in base 16 or hexadecimal notation. Unlike the ten digits of the decimal system (0-9), hexadecimal uses sixteen digits (0-9 and A-F, where A=10, B=11, C=12 and so on up to F=15).

  • Page 67: Installing The Card

    A d d i n g E x p a n s i o n C a r d s Installing the card Warning Never carry out any work inside the computer with AC power applied. Always turn off the computer and unplug all power cords before starting work.
  • Page 68 A d d i n g E x p a n s i o n C a r d s Remove the blanking plate of the chosen slot by removing its securing screw, then sliding the plate out of its slot. Keep the screw, you will use it later to secure the card.
  • Page 69 A d d i n g E x p a n s i o n C a r d s 12. If the card you have just installed is intended to control a removable-media drive, turn to the next chapter for instructions on installing the drive itself.

  • Page 70: Upgrading

    U p g r a d i n g UPGRADING This chapter contains instructions on installing upgrades or add-ons in the computer (with the exception of expansion cards which are dealt with in the preceding chapter). Read this chapter before purchasing an upgrade. If, having read the relevant instructions, you are not confident about installing the upgrade, you may wish to have your supplier or service organisation install it for you.

  • Page 71: Inside The System Unit

    U p g r a d i n g Inside the system unit APRICOT LS/VS340 OWNER’S HANDBOOK...
  • Page 72 U p g r a d i n g The illustration opposite identifies the major components inside system unit that are affected by the installation instructions in this chapter. video memory upgrade sockets: systems with 1 Mbyte of video memory can be upgraded to have 2 Mbytes, providing more colours and/or higher resolutions.

  • Page 73: Adding More System Memory

    U p g r a d i n g Adding more system memory The computer’s motherboard is fitted with sockets for up to four Extended Data Output (EDO) 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 74 U p g r a d i n g Use the illustration at the beginning of this chapter to identify the SIMM sockets. Depending on how much memory is already fitted, some of the sockets may be occupied. Compare the current configuration of SIMMs with the configuration for the memory upgrade you intend to install.
  • Page 75 U p g r a d i n g To remove a SIMM Disengage the metal holding clips on each side of the socket using your thumbs. Place your forefingers on the top edge of the SIMM and tilt the SIMM forward to about 15 to the vertical.
  • Page 76 U p g r a d i n g Do not use excessive force. If the SIMM will not fit easily, remove it and start again. Repeat these steps for each SIMM you want to install. When you have finished, replace the removable-media drive tray you removed earlier, then replace the system unit cover.

  • Page 77: Adding More Video Memory

    U p g r a d i n g Adding more video memory Video memory is memory reserved for use by the on-board controller. More video memory can provide more colours or higher resolutions to an extent determined by the capabilities of your monitor.
  • Page 78 U p g r a d i n g If necessary, replace the expansion cards you removed earlier. Replace the system unit cover. You can now reconfigure your operating system to use the expanded capabilities of the video controller. See your operating system documentation for details.

  • Page 79: Upgrading The Processor

    U p g r a d i n g Upgrading the processor The ZIF (zero insertion force) processor socket on the motherboard is designed to accept a variety of Intel Pentium processors with processor speeds from 75 to 200 megahertz (MHz). You can upgrade your processor by replacing it with one of higher performance.
  • Page 80 U p g r a d i n g Removing the old processor Turn off the computer and unplug all power cords. Take suitable anti-static precautions and remove the system unit cover. If you are unfamiliar with the recommended anti-static precautions or the procedure for removing the system unit cover, refer to Appendix A, “Inside the System Unit”.
  • Page 81 U p g r a d i n g Lift the processor and its attached heat sink out of the socket and place it on an anti-static surface outside the system unit. Avoid touching the metal pins of the processor. Caution If the processor does not lift easily out of the socket, do not attempt to force it.
  • Page 82 U p g r a d i n g Separate the heat sink from the processor by twisting the heat sink back and forth to loosen the grip of the thermal bonding compound, then slide the heat sink off to one side of the processor. Fitting the new processor Ensure that the securing lever on the ZIF socket is still in the upright position.
  • Page 83 U p g r a d i n g 1 positioning guide 2 keyed corner You will need to adjust the processor speed selection jumpers on the motherboard. See Appendix A, “Inside the System Unit”, for more information about locating and adjusting motherboard jumper settings.

  • Page 84: Adding A Removable-Media Drive

    U p g r a d i n g Adding a removable-media drive The 5.25" drive bay can contain any half height 5.25" device. A range of removable-media drives are available for this bay. Configuring the drive Drives purchased from an authorised supplier should arrive pre- configured and ready for installation.
  • Page 85 U p g r a d i n g Remove the two screws that secure the removable-media drive tray. Slide the tray backwards slightly and lift it out of the system unit. Open the drive bay door. The drive bay aperture is initially obscured by a blanking plate attached to the top of the metalwork.
  • Page 86 U p g r a d i n g additional screws or cables (some of which may not be required). Place the drive, upside down, on a suitable anti-static surface, then place the drive tray over the drive. Make sure that the tray and the drive are the same way round. Align the holes in the underside of the drive with those in the base of the drive tray.
  • Page 87 U p g r a d i n g 11. Connect the drive’s signal cable(s). Use the table on the next page as a guide. See the documentation provided with the upgrade kit for more information. Before connecting any signal cable to the motherboard, check the label on the inside of the system unit cover to make sure that you are using the correct connector.
  • Page 88 U p g r a d i n g Drive type Cabling instructions Travan tape drive This drive uses a ribbon signal cable with three connectors. This (FTD interface) signal cable must be connected between the signal connector on the rear of the tape drive, the 3.5" diskette drive, and the diskette/floppy disk connector on the motherboard (usually marked FLOPPY...

  • Page 89: Adding A Hard Disk Drive

    U p g r a d i n g Adding a hard disk drive The computer’s 3.5" hard disk drive bay can accommodate two 1" hard disk drives. Hard disk drives should always be connected to the primary ATA/IDE interface. Configuring the drive The ATA/IDE interface supports a maximum of two drives.
  • Page 90 U p g r a d i n g If one hard disk is already fitted, unplug its power and signal cables from the rear of the drive. The hard disk drive bay is secured by two screws and held by two lugs in the base of the system unit.
  • Page 91 U p g r a d i n g 12. Line up the mounting holes on the drive with those in the bay, insert the securing screws and tighten them until they are finger tight. Fit pair A first, then pair B. If you are installing a hard disk drive in a system that previously had only a diskette drive there will be two sets of mounting holes available in the bay.
  • Page 92 U p g r a d i n g 15. Connect the hard disk(s) to their power cables and attach the signal cable. The ribbon signal cable has three connectors. One plugs into the (primary) ATA/IDE interface on the motherboard. The other two connectors are for the master and slave hard disk drives.
  • Page 93 U p g r a d i n g Preparing a drive with Windows for Workgroups With MS-DOS/Windows for Workgroups, you use the MS-DOS Fdisk program to partition the disk followed by the MS-DOS Format command to format the partitions. Use the MS-DOS Help command to find out more about Fdisk and Format.

  • Page 94: Troubleshooting

    T r o u b l e s h o o t i n g TROUBLESHOOTING This chapter offers advice if you suspect a fault with your computer. If in doubt, turn off the computer and unplug all power cords before consulting your supplier or an authorised maintainer.
  • Page 95 T r o u b l e s h o o t i n g Power-on self-test 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 96 T r o u b l e s h o o t i n g Code Cause Code Cause Keyboard locked Keyboard clock line failure Timer tick interrupt failure Keyboard data line failure Timer 2 test failure Keyboard stuck key failure Diskette controller failure Keyboard controller failure System board memory parity interrupt...
  • Page 97 T r o u b l e s h o o t i n g Beep codes The computer uses special audio beep codes to signal certain hardware faults. If you hear a beep code which is not accompanied by a POST error message, call your supplier or authorised maintainer.
  • Page 98 T r o u b l e s h o o t i n g Beep sequences Many of the following beep sequences indicate a serious fault. Your computer may halt. Turn off the computer for 30 seconds and then try again.
  • Page 99 T r o u b l e s h o o t i n g Failure to boot On completion of POST, the computer attempts to boot from a system diskette or bootable hard disk partition. The table below lists some of the messages that might appear during the boot sequence.

  • Page 100: Troubleshooting Checklist

    T r o u b l e s h o o t i n g Troubleshooting checklist If you encounter a problem with the computer the following sections suggest checks to make before you alert your dealer, authorised maintainer or support organisation. The checks listed cover the causes of common problems.
  • Page 101 T r o u b l e s h o o t i n g that the software which drives or uses the card is correctly configured. System BIOS Use the BIOS Setup utility to ensure that the settings are correct. See Chapter 3, “Using the BIOS Setup Utility”.

  • Page 102: Ainside The System Unit

    I n s i d e t h e S y s t e m U n i t INSIDE THE SYSTEM UNIT This appendix provides step-by-step instructions on obtaining access to the inside of the system unit for the purposes of maintaining or upgrading the system.
  • Page 103 I n s i d e t h e S y s t e m U n i t When installing any upgrade, be sure you understand what the installation procedure involves before you start. This will enable you to plan your work, and so minimise the amount of time that sensitive components are exposed.

  • Page 104: Opening The System Unit

    I n s i d e t h e S y s t e m U n i t Opening the system unit To remove the system unit cover: Turn off both the system unit and the monitor. If your AC power outlets have switches, set them to their Off positions.

  • Page 105: Motherboard Layout

    I n s i d e t h e S y s t e m U n i t Motherboard layout Com 1 Video Parallel Com 2 (optional) Mouse Key/Bd SIMMs sockets 3 and 4 Radio card connector SIMMs sockets 1 and 2 TV audio connector Front panel connectors CD audio connector...

  • Page 106: Changing Jumper Settings

    I n s i d e t h e S y s t e m U n i t Changing jumper settings PL100 PL22 PL32 PL37 PL36 PL11 PL10 PL3, PL4, PL6, & PL7 Caution Do not alter any jumpers or switch settings other than those identified here, unless told to by your supplier or an authorised maintainer.
  • Page 107 I n s i d e t h e S y s t e m U n i t Processor and bus speed selection Caution Do not change these jumpers unless you have upgraded the processor. Otherwise the processor and other vital motherboard components could be destroyed.
  • Page 108 I n s i d e t h e S y s t e m U n i t BIOS upgrade and recovery These jumpers should not normally be changed except by a service engineer or at the direction of a service engineer. CMOS is cleared by moving the PL8 jumper to the 2-3 position for a few moments while the system is turned off, then returning it to the normal 1-2 position.

  • Page 109: System Connectors

    I n s i d e t h e S y s t e m U n i t 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 if they become loose you may need to re-attach them.

  • Page 110: Replacing The Configuration Battery

    I n s i d e t h e S y s t e m U n i t Replacing the configuration battery The computer keeps a record of its current hardware configuration in a CMOS memory chip which is sustained by a small battery. This battery has a life of up to 5 years.
  • Page 111 I n s i d e t h e S y s t e m U n i t Using a non-conductive implement, release the latch that holds the battery in place. The battery will pop up allowing you to lift it out of the holder. Warning You must not use a metal or other conductive implement to remove the battery.

  • Page 112: Btechnical Information

    T e c h n i c a l I n f o r m a t i o n TECHNICAL INFORMATION This appendix provides some technical information about your computer. More detailed information is available from your supplier. Specifications General Processor Types...
  • Page 113 T e c h n i c a l I n f o r m a t i o n I/O ports Serial Two 9-way male D-type RS-232 Parallel 25-way female D-type IEEE 1284: EPP/ECP-compatible Keyboard Windows 95 keyboard, AT-compatible Mouse PS/2-compatible two-button Diskette...

  • Page 114: Physical Characteristics

    T e c h n i c a l I n f o r m a t i o n Physical characteristics Weight and dimensions Component Height Depth Width Mass System unit 94 mm 40 mm 428 mm 9.5-12 kg Keyboard 45 mm 107 mm...
  • Page 115 T e c h n i c a l I n f o r m a t i o n Power cords The power cord supplied with the computer complies with the safety standards applicable in the country in which it is first sold. If you wish to use the computer in another country, you must ensure that you use a power cord which complies with the safety standards of that country.
  • Page 116 MITSUBISHI ELECTRIC PC DIVISION APRICOT COMPUTERS LIMITED 3500 PARKSIDE BIRMINGHAM BUSINESS PARK BIRMINGHAM B37 7YS UNITED KINGDOM T el +44 (0)121 717 7171 Fax +44 (0)121 717 3692 http://www.apricot.co.uk...

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