Mitsubishi Electric Apricot LS Owner's Handbook Manual

Mitsubishi Electric Apricot LS Owner's Handbook Manual

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Summary of Contents for Mitsubishi Electric Apricot LS

  • Page 2 Apricot LS System with Pentium Pro motherboard ® Owner’s Handbook MITSUBISHI ELECTRIC...
  • Page 3 Copyright © Apricot Computers Limited 1996. All rights reserved. Published by Apricot Computers Limited 3500 Parkside Birmingham Business Park Birmingham, England, B37 7YS MITSUBISHI ELECTRIC Printed in the United Kingdom...
  • Page 4: Safety And Regulatory Notices

    N O T I C E S Safety and Regulatory Notices Read the separate Power Connection Guide and Health and Comfort Guide before using the computer for the first time. Electrical The computer uses a safety ground and must be earthed. The system unit AC power cord is its ‘disconnect device’.
  • Page 5 N O T I C E S CLASS 1 LASER PRODUCT label is located on the under side of the system unit. Use the CD-ROM drive only as described in this manual. Failure to do so may result in exposure to hazardous radiation. Do not attempt to dis-assemble the CD-ROM drive.
  • Page 6 N O T I C E S FCC class A / B (USA) * FCC text - test dependant * DOC class A / B (Canada) * DOC text - test dependant * VCCI level 1 / 2 (Japan) The applicable standards for the country of sale will be shown on the label fixed to the rear of the system.
  • Page 7 PREFACE Some systems may be supplied for the networking environment and therefore may not have a hard disk drive or a floppy disk drive fitted. These systems would probably have a network card installed in an available slot. The motherboard may not be fitted with a on-board video system. In which case a higher grade of video system may be installed in the form of a plug in card occupying one of the expansion slots.
  • Page 8: Table Of Contents

    CONTENTS THE BEGINNING Connections Turning on and booting Energy saving features Turning the power off Cleaning and transporting THE SYSTEM DRIVES Using the floppy drive Using a CD-ROM drive Hard disk drives HDD interface Software backup Copying pre-installed software SYSTEM EXPANSION Configuring a card Installing a card SYSTEM UPGRADES...
  • Page 9 CONTENTS THE SYSTEM UNIT Anti-static precautions Opening the system unit The components inside Drive specification Physical characteristics SYSTEM MOTHERBOARD Board specification Board layout System ports Jumper configurations Processor and BUS clock External connections Replacing CMOS battery SYSTEM BIOS AND SET-UP Entering set-up Control keys Set-up starts on its own...
  • Page 10: The Beginning

    T H E B E G I N N I N G THE BEGINNING. . . You should read this chapter even if you do not read any other. It provides important basic information to help you in using your computer.
  • Page 11: Turning On And Booting

    T H E B E G I N N I N G Turning on and booting the computer Turning the power on To turn on the computer, press the lower, or white, P button. OWER The green POWER ON light should come on to show that the system unit is powered.
  • Page 12: Energy Saving Features

    T H E B E G I N N I N G already in place or pre-installed on this, the C: drive, and it is usually made ‘active’, i.e. the bootable hard disk. Energy Saving features If the system is left unattended for more than a predetermined time, energy saving features will come into play.
  • Page 13: Cleaning And Transporting

    T H E B E G I N N I N G • Always exit from, or close down Windows. This procedure deletes the temporary files it creates, and will close down all your applications in an orderly manner. It will prompt you to save any unsaved work in the process.
  • Page 14 T H E B E G I N N I N G The system unit • Occasionally wipe the system unit with a soft, slightly damp, lint-free cloth. • Occasionally check the air vents on the rear and sides of the system unit.
  • Page 15 T H E B E G I N N I N G 4. If a solid object drops between the keys, turn the keyboard upside down and shake it gently. Do not probe between the keys as this may cause serious damage. The mouse The mouse tends to be used heavily and so is susceptible to damage, but a little care should minimise this.
  • Page 16 T H E B E G I N N I N G Use common sense when handling the computer. Hard disks in particular can be damaged if the computer is dropped or handled roughly. As a precaution, back up your data from the hard disks to tape or floppy disks before moving the computer.
  • Page 17: The System Drives

    T H E S Y S T E M D R I V E S THE SYSTEM DRIVES This chapter contains simple operating instructions about the drives that may be currently fitted in your computer. Using the floppy disk drive The floppy disk drive is usually configured in the system BIOS as drive A:, with a capacity of 1.44 Mbytes.
  • Page 18: Using A Cd-Rom Drive

    T H E S Y S T E M D R I V E S 3. Push the disk gently home until it ‘clicks’ into place. The drive button will also move outwards slightly. The drive door will stay open, leaving the disk just visible 4.
  • Page 19 T H E S Y S T E M D R I V E S With the appropriate software, a CD-ROM drive can retrieve multimedia data from CD-ROM discs, pictures from Multisession Photo-CD discs and also play commercial audio CDs. Warning The laser beam inside the CD-ROM drive is harmful to the eyes if looked at directly.
  • Page 20: Hard Disk Drives

    T H E S Y S T E M D R I V E S Note Wait a few seconds for the CD to spin up to full speed before attempting either to play the audio tracks or to read data from it. To remove a compact disc, press the eject button and then lift out the CD.
  • Page 21 T H E S Y S T E M D R I V E S The primary hard drive The majority of computers are supplied with one internal or ‘primary’ hard disk drive (HDD) designated as the C: drive. The operating system will normally be installed on this drive.
  • Page 22 T H E S Y S T E M D R I V E S It should not be necessary to actually remove any internal screws, merely loosen them sufficiently to remove an assembly. Remove the floppy drive assembly, slide it towards the rear of the system and lift it out.
  • Page 23 T H E S Y S T E M D R I V E S across DS.) A new SCSI drive will need its ID link set. Check the drive documentation. SLAVE MASTER Fit the new hard drive in the available position using the special screws provided taking sure not to touch either of the exposed control boards, then refit the assembly to the baseplate.
  • Page 24: Hdd Interface

    T H E S Y S T E M D R I V E S The disk will then need to be formatted. Look in your software user guide for further information, or in Windows Help. If you have a CD-ROM drive fitted this will have to be renamed as drive E:, as a second hard drive will be designated automatically as drive D: by the operating system.
  • Page 25: Software Backup

    T H E S Y S T E M D R I V E S Software backup Within Windows you will find Help on numerous topics including backing up, or making a security copy, of your software. It is vital to maintain a discipline of regular backup of your data.
  • Page 26: System Expansion

    S Y S T E M E X P A N S I O N SYSTEM EXPANSION Your computer can accept various expansion cards or boards. Most are simple to install. You can extend the capabilities of the computer, for example: •...
  • Page 27: Configuring A Card

    S Y S T E M E X P A N S I O N Configuring the card Part of the installation procedure for many expansion cards involves setting up or configuring the card so it works correctly in the system.
  • Page 28 S Y S T E M E X P A N S I O N Some interrupts are fixed, others can be re-assigned. The following table lists the interrupts used by the computer and shows which may be available for use by expansion cards. Default assignment Available? IRQ0...
  • Page 29 S Y S T E M E X P A N S I O N The following table lists the DMA channels used by the computer and shows which are available for use by expansion cards. Default assignment Available? DMA0 DMA1 Alternate ECP printer port Optionally...
  • Page 30 S Y S T E M E X P A N S I O N Any ports not listed are available for expansion cards. All addresses below 100h are used by the system board for various fixed system components and chipset controller settings. They are unavailable for use.
  • Page 31: Installing A Card

    S Y S T E M E X P A N S I O N Installing the card Read all these instructions through before attempting to install any expansion card. Installing expansion cards can be one of the most difficult operations you may ever perform within your computer.
  • Page 32 S Y S T E M E X P A N S I O N 7. Position the expansion card alongside the slot in which you wish to install it. Align the rear of the card with the slot in the rear of the system unit, and, if the card is full length, align the front of the card with the card guide.
  • Page 33: System Upgrades

    SYSTEM UPGRADES SYSTEM UPGRADES Read this chapter before purchasing any memory or processor upgrade and if you are in any doubt, consult your supplier. Then, if having read the relevant instructions, you still do not feel confident about installing the upgrade, you may wish to have your supplier or service organisation install it for you.
  • Page 34 SYSTEM UPGRADES DIMMs have hardware outputs, readable by the chipset, which indicate the memory chip speed to the controller. Detection of memory size is automatic by the BIOS. Although the minimum configuration is one DIMM there are considerable performance benefits in fitting more than one DIMM, as 2-way or 4-way interleave become available when two, or four DIMMs respectively, are fitted.
  • Page 35: Installing And Removing Dimms

    SYSTEM UPGRADES Installing and removing DIMMs Note the indents along the connector edge, they prevent the DIMM from fitting into the socket the wrong way round. 1. Turn off the computer and unplug all power cords. 2. Take suitable anti-static precautions and remove the system unit cover.
  • Page 36 SYSTEM UPGRADES 2. Align with and place carefully above the chosen socket, ensuring that the socket end clips are not obstructing. 3. Pushing gently on its top corners, press the DIMM into the socket and make sure the two end clips are snapped into place. Do not use excessive force 4.
  • Page 37: Upgrading The Processor

    SYSTEM UPGRADES • Correctly fitted the DIMMs in their slots. • The DIMMs are of the correct type. • The DIMMs are all of the same capacity. It may be necessary to refit the original memory to check if there is a problem with your new modules.
  • Page 38 SYSTEM UPGRADES connected.) Disconnect any cables connected to the cards, remove the securing screws at the rear of the system unit, then remove the cards. 4. If there is no processor fan, a strong spring clip secures the large heatsink to the processor. Release the end of the spring from the hook on the front of the ZIF socket with care and slide the heatsink clear.
  • Page 39 SYSTEM UPGRADES 5. A lever attached to the ZIF socket secures the processor in the socket. Unhook the lever from the locked position. Lift it upright (at right-angles to the motherboard). There may be a little stiffness at the beginning and end of the lever’s movement. 6.
  • Page 40 SYSTEM UPGRADES • The upgrade processor may have a fan power lead to be connected to the pins on the board (PL2.) The ‘overdrive’ type processor however may have its own internal connection for the fan power supply. 6. Now adjust the processor multiplier and external bus clock speed links on the motherboard in conjunction with the new processor’s data sheet.
  • Page 41: 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 maintenance provider.
  • Page 42 T R O U B L E S H O O T I N G Power-on self-test (POST) Whenever the computer is switched on, the POST routine tests various hardware components, including memory, and compares the actual configuration of the computer with that recorded in configuration (CMOS) memory.
  • Page 43: 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 44: System Disk Drives

    T R O U B L E S H O O T I N G Video If you have fitted a new video controller card ensure that the monitor cable is connected to the new card. Check that you have removed the old video drivers/software from your system before installing any software for the new video card.
  • Page 45: Software

    T R O U B L E S H O O T I N G Check also that the disk is not badly scratched or dirty. Clean them carefully, wiping them with a clean, soft cloth, slightly moistened if necessary. Clean from the centre outwards. Always store CD-ROMs in hard cases and handle them by the edges only wherever possible.
  • Page 46 T R O U B L E S H O O T I N G • Do not lend other people your software master disks. • Keep your floppy disks in a safe place. • Write protect your floppy disks. •...
  • Page 47: Athe System Unit

    T E C H N I C A L I N F O R M A T I O N THE SYSTEM UNIT This appendix provides instructions regarding access to the inside of the system unit for the purposes of maintaining or upgrading the system.
  • Page 48: Opening The System Unit

    T E C H N I C A L I N F O M A T I O N an earthed wrist strap and anti-static clothing. It is also a good idea to use an ioniser or humidifier to remove static from the air. •...
  • Page 49: The Components Inside

    T E C H N I C A L I N F O R M A T I O N 5. Release the caselock and/or remove any locking device from the loop, if fitted. 6. Slide the top cover rearwards slightly, then lift it off. Refitting the cover is simply the reverse of removal.
  • Page 50: Drive Specification

    T E C H N I C A L I N F O M A T I O N Drive Specification summary (removable media only) Floppy disk drive Manufacturer Mitsubishi MF355F-2450MP Interface 34 Pin connector Power Connector 4 pin miniature Loading 1.5W during read/write 100mW during standby...
  • Page 51: Physical Characteristics

    T E C H N I C A L I N F O R M A T I O N Note The IDE CD-ROM drive detailed opposite may be replaced with a similar specification SCSI device when systems are fitted with a suitable interface. Physical Characteristics (system unit) Weight and dimensions...
  • Page 52: Bsystem Motherboard

    T E C H N I C A L I N F O R M A T I O N SYSTEM MOTHERBOARD This appendix details the specification and settings for the main processor board fitted inside your computer. Normally the vast majority of jumper settings should never be changed.
  • Page 53 T E C H N I C A L I N F O R M A T I O N Drives Floppy drives Support for 720 Kb, 1.2 Mb (3-Mode, Japan only) 1.44 Mb at 3.5 inch, and 1.2 Mb at 5.25inch Hard drives PCI/IDE controller.
  • Page 54: Board Layout

    T E C H N I C A L I N F O R M A T I O N Board layout Com 2 Com 1 Video Parallel Mouse Key/Bd 11 10 9 Battery (type CR2032) Expansion riser socket BIOS control links Main power supply connector FDD connector Primary IDE interface...
  • Page 55: System Ports

    T E C H N I C A L I N F O R M A T I O N System Ports (external connections) Serial communications COM 1, COM 2 9 way Male D-type connector 10101 1. Data carrier detect 2.
  • Page 56 T E C H N I C A L I N F O R M A T I O N Keybord and Mouse ports 6 pin miniature DIN connector Both of the connections have the same voltages and signals but are not interchangeable. 1.
  • Page 57: Jumper Configurations

    T E C H N I C A L I N F O R M A T I O N Jumper configurations There are very few jumpers that will ever need changing, most of them have been factory set for your system and its needs, but for completeness, the details are given here.
  • Page 58: Processor And Bus Clock

    T E C H N I C A L I N F O R M A T I O N Processor and bus clock Full details of the processor’s requirements should accompany the new processor and the appropriate board links should then be identified from the information below.
  • Page 59: External Connections

    T E C H N I C A L I N F O R M A T I O N Processor settings examples Processor speed Links PL10 PL400 PL10 PL400 External connections Connectors identified at position ‘13’ on the motherboard diagram. PL18 PL17 PL22...
  • Page 60 T E C H N I C A L I N F O R M A T I O N Read carefully the following instructions before commencing work. 1. Turn off the computer and unplug all power cords. 2. Take suitable anti-static precautions and remove the system unit cover.
  • Page 61: System Bios And Set-Up

    T E C H N I C A L I N F O R M A T I O N SYSTEM BIOS AND SET-UP When the system is switched on, the power on self test (POST) does its job depending upon the information it finds in the BIOS and sets up the computer to boot into operation.
  • Page 62: Set-Up Starts On Its Own

    T E C H N I C A L I N F O R M A T I O N ↑ and ↓ Scroll through a menu list. ←and→ To toggle values or settings. ↵ The enter key, to select the highlighted item. Numbers, used in places where values are to be entered.
  • Page 63: Opening Screen

    T E C H N I C A L I N F O R M A T I O N Opening screen On entering the set-up utility a main menu screen appears. If there is an associated sub-menu, or a further sub-menu available, then the listed options have a preceding bullet, as shown below: •...
  • Page 64: Sub-Menu Pages

    T E C H N I C A L I N F O R M A T I O N Sub-menu pages 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 of the information on this page before you progress any further or make any changes.
  • Page 65 T E C H N I C A L I N F O R M A T I O N Floppy disk drives This is available purely to change the mode of the floppy drive. The drive supplied and fitted is a 3.5inch 1.44 Mbyte. This setting, if changed, could prevent software access to the fitted drive.
  • Page 66 T E C H N I C A L I N F O R M A T I O N Date and Time There is a Real Time Clock (RTC) on the system motherboard. The RTC is maintained by the CMOS battery when the system is off. System time Using the left and right arrow keys to move around, you then use either the number keys to insert new figures or the + and - keys to...
  • Page 67 T E C H N I C A L I N F O R M A T I O N Delete User password Use this to clear or remove the existing password, without replacing it with a new one. You may be asked for confirmation or to enter the old password.
  • Page 68 T E C H N I C A L I N F O R M A T I O N Diskette-less Operation If this option is Disabled, POST will report a fault or any absence of the floppy drive and halt the boot process, if Enabled, POST will bypass the floppy test and continue, providing another boot device is available e.g.
  • Page 69 T E C H N I C A L I N F O R M A T I O N Error handling This gives acces to a further menu where internal processor errors can be detected and displayed. These settings are intended for maintainance engineers for fault diagnostic purposes only and should not be changed.
  • Page 70 T E C H N I C A L I N F O R M A T I O N Each resource can be set to either Available or Not available. If shown as available, it is assumed by the system not to be in use by any ISA card or device and therefore will be made available for the PCI auto-configure process.
  • Page 71: Error Messages

    T E C H N I C A L I N F O R M A T I O N Error messages Code Cause Code Cause Keyboard locked Keyboard data line failure Timer tick interrupt failure Keyboard stuck key failure Timer 2 test failure Keyboard controller failure Diskette controller failure...

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