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Mitsubishi Electric CX series Owner's Handbook Manual

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Owner's Handbook


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Summary of Contents for Mitsubishi Electric CX series

  • Page 1 SERIES Owner’s Handbook COMPAC...
  • Page 3 Copyright © Apricot Computers Limited 1998. All rights reserved. Published by: Apricot Computers Limited 3500 Parkside Birmingham Business Park Birmingham, England B37 7YS Printed in the United Kingdom...
  • Page 4: Safety And Regulatory Notices

    SAFETY AND REGULATORY NOTICES General Electrical The system employs a safety ground Das System benötigt aus Sicherheitsgründen einen Masseanschluß Le système doit être mis à la terre Dette system bruger en sikkerhedsjordforbindelse Apparaten skall anslutas till jordat uttag när den anslutas till ett nätverk The system unit AC power cord is its ‘disconnect device’.
  • Page 5 S a f e t y & R e g u l a t o r y N o t i c e s Ergonomic When positioning the system unit, monitor and keyboard, take into account any local or national regulations relating to ergonomic requirements. Anti-static precautions Warning Static electricity can cause permanent damage to electronic components.
  • Page 6 S a f e t y & R e g u l a t o r y N o t i c e s Maintenance Switch off and disconnect all cables before attempting to clean the computer. Do not use sprays, solvents or abrasives that might damage the system unit surface. Do not use cleaning fluids or sprays near air vents, ports, or the diskette and CD- ROM drives.
  • Page 7 93/68/EEC Important This system, when supplied, complies with the CE Marking Directive and its strict legal requirements. Use only parts tested and approved by Mitsubishi Electric PC Division. All expansion cards, drives and peripherals should carry the CE mark. Standards...
  • Page 8: Power Connection

    S a f e t y & R e g u l a t o r y N o t i c e s Power Connection Typical AC plugs 250V 125V 250V 250V 250V BS1363A SHUCO NEMA 5-15P SRAF 1962/DB16/87 ASE 1011 U.
  • Page 9 S a f e t y & 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 following guidance to connect the components together.
  • Page 10: Table Of Contents

    C o n t e n t s CONTENTS Welcome Unpacking Pictorial guide to the system unit General advice Connecting the components Getting Started Turning on the PC Power management Power management and Windows Shutting down the PC Using the computer for the first time Backing-up the pre-installed software Improving your display settings If your hard disk is larger than 2 gigabytes...
  • Page 11 C o n t e n t s Motherboard Features summary Components Microprocessor Second level cache memory PCI enhanced IDE interface Input/Output (I/O) controller Real-Time clock Universal Serial Bus (USB) support On-board video graphics controller Additional A.G.P. support BIOS PCI auto configuration IDE auto configuration ISA plug and play capability Security passwords...
  • Page 12 C o n t e n t s DMA channels 5/20 I/O map 5/20 PCI configuration space map (figures in hex) 5/22 Interrupts 5/22 Drive Upgrades Configuring an E-IDE drive Installing a drive Removing the drive assembly Fitting a 3.5" drive Fitting a 5.25"...
  • Page 13 C o n t e n t s DMI Event Logging 7/13 Security menu 7/16 Power menu 7/17 Boot menu 7/18 Exit menu 7/20 Upgrading the BIOS 7/21 Power-on self-test 7/24 Recoverable POST errors 7/24 Terminal POST errors and beep codes 7/27 Troubleshooting Problems when starting...
  • Page 14: Welcome

    W e l c o m e WELCOME This chapter gives you a quick tour of your new CX Personal Computer. As soon as you’ve unpacked the components and assembled them, you should progress to the next chapter, Getting Started. Throughout this manual ‘Windows’...
  • Page 15: Pictorial Guide To The System Unit

    W e l c o m e Pictorial guide to the system unit 9 8 7 COM PACT CD E button Diskette drive JECT CD emergency eject hole Hard disk activity indicator CD-ROM disc drawer (platter) Power Mode indicator CD activity indicator button OWER CD phono jack &...
  • Page 16 W e l c o m e 11 12 Casing screws for the top cover RJ-45 network port AC power outlet for monitor USB port Voltage selection switch Serial port 2 AC power inlet from AC supply Keyboard port Audio input socket Serial (modem) port 1 Microphone socket Monitor port...
  • Page 17 Optional DMI software such as Intel’s LANDesk Client Manager is required to operate this feature. Contact your Mitsubishi Electric supplier for more details. See the Motherboard chapter for more information about the system’s motherboard.
  • Page 18 W e l c o m e Configuration jumper DIMM sockets for system memory upgrades Processor socket; Slot 1. Diskette drive Battery Drive assembly, with optional CD-ROM drive. OWNER’S HANDBOOK...
  • Page 19: General Advice

    W e l c o m e General advice This computer is designed to be used in a normal home or office environment. Here are a few hints for choosing a suitable site: Place the system unit flat on a sturdy, level surface, free from vibration.
  • Page 20: Connecting The Components

    W e l c o m e Connecting the components Use the following guidance to connect the components together. It is important that you take each step in the order indicated. Before connecting any components, ensure that the AC power supply is switched off or disconnected, and that the system unit, the monitor, and any peripherals are turned off.
  • Page 21: 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 to use your Mitsubishi Electric CX Series computer safely and efficiently. Turning on the PC To turn on the computer, simply press the P button.
  • Page 22: Power Management

    IBM’s “Wake On LAN” technology. Power management and Windows Mitsubishi Electric CX Series computers support the two types of power management that may be used by Windows operating systems: Advanced Power Management (APM) and Advanced Configuration &...
  • Page 23 G e t t i n g S t a r t e d Windows 95 and Windows 98 Power Minimised states In Windows 95/98, the P button becomes a suspend/resume OWER button. In other words you can enter a Power Minimised state just by briefly pressing the P button.
  • Page 24: Shutting Down The Pc

    G e t t i n g S t a r t e d Shutting down the PC To shut down the computer safely, do the following: Wait until all the activity indicators on the front bezel show ‘not busy’. Turn off any attached peripherals, except for the monitor and other peripherals that are designed to be kept on permanently.
  • Page 25: Using The Computer For The First Time

    G e t t i n g S t a r t e d Using the computer for the first time First time with Windows 95/98 or Windows NT The first time you turn on your computer you must tell Windows your name (and the name of the company for which you work, if applicable) and agree to the legal terms and conditions of the Windows Licence Agreement.
  • Page 26: Improving Your Display Settings

    Display settings in Windows 3.11 The monitor setting is changed by using the ATI Desktop utility in the Mitsubishi Electric group. Open ATI Desktop, choose Screen Adjustment, then choose Select Monitor. This offers a list of all current Mitsubishi Electric monitors. Once you have selected the correct monitor, you can select the required resolution.
  • Page 27: If Your Hard Disk Is Larger Than 2 Gigabytes

    G e t t i n g S t a r t e d If your hard disk is larger than 2 gigabytes If your Mitsubishi Electric PC is pre-installed with Windows 95 or Windows 98, the entire hard disk is initially formatted as one partition.
  • Page 28: Diskettes And Cds

    D i s k e t t e s & C D s DISKETTES and CDs Diskette drive Your PC is fitted with a 1.44 Mbyte diskette drive. This accepts either 1.44 Mbyte (HD) or 720 Kbyte (DD) diskettes. Each diskette has a rigid plastic cover, with a metal shutter that guards the disk surface.
  • Page 29 D i s k e t t e s & C D s Ejecting a diskette Wait until the drive’s activity indicator is unlit, then press the button. EJECT If a diskette becomes stuck in the drive, perhaps because its label has peeled back, do not attempt to remove it with tweezers or any similar implement;...
  • Page 30: Cd-Rom Drive (Optional)

    D i s k e t t e s & C D s CD-ROM drive (optional) The CD-ROM drive can retrieve multimedia data from CD-ROM discs and multi-session Photo-CD discs. It can also play normal music CDs (the drive has its own headphone jack and associated volume control).
  • Page 31 D i s k e t t e s & C D s Inserting a compact disc Press the button on the front of drive. EJECT Place the CD centrally, printed side up, on the platter. Push the button again, or gently push the front of the EJECT platter to draw it back into the drive.
  • Page 32: Expansion Cards

    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, drives and peripherals must carry the CE mark.
  • Page 33: Configuring The Card

    E x p a n s i o n c a r d s Configuring the card Part of the installation procedure for an expansion card involves setting up or ‘configuring’ the card so it will work correctly in the computer.
  • Page 34 E x p a n s i o n c a r d s ISA Interrupt request level (IRQ) The ‘interrupt request level’ or ‘IRQ’ is the means by which the expansion card sends a signal to get the attention of, or interrupt, the processor.
  • Page 35 E x p a n s i o n c a r d s Base memory address Some expansion cards are fitted with memory of their own, usually read-only memory (ROM) containing functional extensions to the computer’s BIOS (basic input/output system) ROM. Some cards also have random-access memory (RAM).
  • Page 36: Installing The Card

    E x p a n s i o n c a r d s Installing the card Read all these instructions through before attempting to install any expansion card. Warning Never carry out any work inside the computer with AC power applied.
  • Page 37: Reserving Isa Legacy Resources

    E x p a n s i o n c a r d s Remove the slot blanking plate by removing its securing screw (marked 1 and 2 in the illustration). Keep the screw; it will be needed later to secure the card. Put the slot cover in a safe place, it will need to be replaced if you remove the card in the future.
  • Page 38: Telling Windows About The New Hardware

    E x p a n s i o n c a r d s If you have Windows, 95/98, NT4.x (or higher), you can use the ‘Control Panel’ to change the resource settings used by devices: Click the Start button in the taskbar, then Settings, then Control Panel.
  • Page 39: Motherboard

    M o t h e r b o a r d MOTHERBOARD This chapter describes the principal features of the motherboard and how to carry out basic upgrades. The ‘Welcome’ chapter tells you how to remove the system unit cover. See also the section on ‘Anti-static precautions’ in the Safety &...
  • Page 40: Components

    M o t h e r b o a r d Components Back panel I/O connectors (see Chapter 1) Slot 1 connector CD-ROM audio connector Processor fan connector Configuration jumper (J5G1) DIMM sockets CMOS battery A.G.P. connector Piezoelectric speaker (optional) Caution Care must be taken in the purchase of upgrade parts to ensure both compatibility with the system and the compliance with appropriate...
  • Page 41: Microprocessor

    M o t h e r b o a r d Microprocessor The motherboard supports a single Pentium II processor operating at any of the Pentium II processor speeds, voltages, and bus frequencies. The processor is packaged in a Single Edge Contact (S.E.C.) cartridge.
  • Page 42: Real-Time Clock

    M o t h e r b o a r d Two serial ports One multimode bi-directional parallel port Standard mode: Centronics-compatible operation High speed mode: support for enhanced capabilities port (ECP) and enhanced parallel port (EPP) Flexible IRQ and DMA mapping for Windows 95 Real-Time clock The motherboard has a time-of-day clock and 100-year calendar that will rollover to 2000 at the turn of the century.
  • Page 43: On-Board Video Graphics Controller

    M o t h e r b o a r d Supports isochronous and asynchronous transfer types over the same set of wires Bandwidth and low latencies appropriate for telephony, audio, and other applications Error-handling and fault-recovery mechanisms built into the protocol Note Computer systems that have an unshielded cable attached to a USB...
  • Page 44 M o t h e r b o a r d Motion video acceleration The ATI Rage Pro when in 2x mode supports motion video acceleration by providing: Multistream video for video conferencing DVD/MPEG-2 decode assist Filtered horizontal/vertical, up/down, scaling enhances playback quality Enhanced line buffer allows vertical filtering of native MPEG-...
  • Page 45: Bios

    M o t h e r b o a r d BIOS The system BIOS is contained in a flash memory device on the motherboard. The BIOS provides the power-on self test (POST), the BIOS Setup program, and the PCI and IDE auto-configuration utilities.
  • Page 46: Security Passwords

    M o t h e r b o a r d Security passwords The BIOS includes security features that restrict whether the BIOS Setup program can be accessed and who can boot the computer. A supervisor password and a user password can be set for the Setup program and for booting the computer, with the following restrictions: The supervisor password gives unrestricted access to view and...
  • Page 47 M o t h e r b o a r d In standby mode, the motherboard can reduce power consumption by spinning down hard drives, and reducing power to or turning off VESA DPMS-compliant monitors. Power-management mode can be enabled or disabled in Setup. While in standby mode, the system retains the ability to respond to external interrupts and service requests, such as incoming faxes or network messages.
  • Page 48: Hardware Monitor

    M o t h e r b o a r d Hardware monitor The hardware monitor subsystem provides low-cost instrumentation capabilities. The features of the hardware monitor subsystem include: Support for chassis intrusion (a switch is fitted to the NLX riser, which can be reported to appropriate software).
  • Page 49 M o t h e r b o a r d Speaker (Optional) A piezoelectric speaker can be mounted on the motherboard. The speaker provides audible error code (beep code) information during the POST. OWNER’S HANDBOOK 5/11...
  • Page 50: Upgrading Components

    M o t h e r b o a r d Upgrading components Read through all the instructions before you start. The procedure is not difficult, but if you do not feel confident, you may wish to have your supplier carry out the upgrade. The processor Remove the installed processor Observe the precautions detailed in the ‘Safety and Regulatory...
  • Page 51 M o t h e r b o a r d Remove the processor by pressing in on the latches and pulling the processor straight up as shown. Place the processor into an antistatic container. Install the processor Insert the processor in the retention mechanism. Press down on the processor until it is firmly seated in the Slot 1 connector and the latches on the processor lock into place.
  • Page 52 M o t h e r b o a r d Use the arrow keys to select the processor speed. For example, select 266 for a 266 MHz Pentium II processor. Press <Enter> to confirm the speed. This Maintenance menu reappears again. Press <F10>...
  • Page 53: How To Install Memory

    M o t h e r b o a r d How to install memory You can install from 8 MB to 384 MB of memory in the motherboard DIMM sockets. The board has DIMM sockets arranged as banks 0, 1, and 2. The motherboard supports the following memory features: 168-pin DIMMs with gold-plated contacts 66 or 100 MHz SDRAM...
  • Page 54 M o t h e r b o a r d To install memory To install DIMMs, follow these steps: Observe the precautions detailed in the ‘Safety and Regulatory Notices’ at the front of this handbook. Turn off and disconnect all peripheral devices connected to the computer.
  • Page 55 M o t h e r b o a r d To remove memory To remove a DIMM, follow these steps: Observe the precautions detailed in the ‘Safety and regulatory notices’ at the front of this handbook. Turn off and disconnect all peripheral devices connected to the computer.
  • Page 56: How To Replace The Cmos Battery

    M o t h e r b o a r d How to replace the CMOS battery When your computer is turned off, a lithium battery maintains the current time-of-day clock and the values in CMOS RAM. The battery should last about seven years. When the battery voltage drops below a certain level, the Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate.
  • Page 57: How To Clear The Passwords

    M o t h e r b o a r d Install the new battery in the socket, orienting the “+” and “-” correctly. Replace the computer cover. How to clear the passwords Observe the precautions detailed in the ‘Safety and Regulatory Notices’...
  • Page 58: Motherboard Resources

    M o t h e r b o a r d Motherboard resources Memory map Address Range Address Range Size Description (decimal) (hex) 1024 K - 393216 K 100000 - 18000000 383 MB Extended memory 928 K - 1024 K E8000 - FFFFF 96 KB System BIOS...
  • Page 59 M o t h e r b o a r d Address (hex) Size Description 0080 - 008F 16 bytes DMA page registers 00A0 - 00A1 2 bytes Interrupt controller 2 00B2 - 00B3 2 bytes APM control 00C0 - 00DE 31 bytes DMA controller 2 00F0 - 00FF...
  • Page 60: Pci Configuration Space Map (Figures In Hex)

    M o t h e r b o a r d PCI configuration space map (figures in hex) Bus No. Device No. Function No. Description Intel 82443BX (PAC) Intel 82443BX (PAC) A.G.P. bus Intel 82371EB (PIIX4E) PCI/ISA bridge Intel 82371EB (PIIX4E) IDE bus master Intel 82371EB (PIIX4E) USB Intel 82371EB (PIIX4E) power management Audio/multimedia controller...
  • Page 61: Drive Upgrades

    D r i v e U p g r a d e s DRIVE UPGRADES This chapter describes how to add an E-IDE hard disk or removable media drive to your computer. Warning Never carry out any work inside the computer with AC power applied. Always shut down the computer and unplug all power cords before removing the top cover.
  • Page 62: Installing A Drive

    D r i v e U p g r a d e s Installing a drive Most systems have the master hard disk drive already installed in the lowest of the three drive bays, and a CD-ROM drive in the top bay. This section concentrates on fitting a drive into the spare, middle bay.
  • Page 63: Fitting A 3.5" Drive

    D r i ve U p g r a d e s If the drive you intend to fit is a removable media drive such as a tape drive or CD writer, flex the plastic blanking plate fitted in the front bezel and remove it, then break off the metal blanking plate behind it.
  • Page 64: Fitting A 5.25" Drive

    D r i v e U p g r a d e s Fit the adapter into the drive assembly. CO MP Fitting a 5.25" drive Fit the new drive into the drive assembly using the special screws provided. Do not overtighten the screws and put a strain on the drive casing.
  • Page 65: Configuring New Drives

    D r i v e U p g r a d e s Check to ensure that no other cables or connections have become dislodged or trapped during the work, then replace the system unit cover. Configuring new drives You do not normally need to configure new drives using the BIOS Setup utility, as it will normally recognise new hardware when the PC is next powered up.
  • Page 66 D r i v e U p g r a d e s Windows for Workgroups 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 67: Bios Setup & Post

    B I O S S e t u p & P O S T BIOS SETUP & POST BIOS (pronounced “bye-oss”) stands for ‘basic input/output system’. The BIOS mediates between the computer’s hardware – the processor, memory, and so on – and its software – the operating system and your programs.
  • Page 68: Using The Setup Utility

    B I O S S e t u p & P O S T Using the Setup utility This section provides an overview of the Setup utility. You can use the Setup utility to change the configuration information and boot sequence for the computer.
  • Page 69: Starting Setup

    B I O S S e t u p & P O S T Starting Setup To start the Setup utility: Turn on or restart your computer. Press the <F2> key when you see the message Press <F2> key if you want to run SETUP If you have previously defined a Supervisor password, you are prompted for it before BIOS Setup starts.
  • Page 70: Setup Menus

    B I O S S e t u p & P O S T Setup menus Here is an overview of the menu screens in the Setup utility. Setup Menu Screen Description Maintenance Specifies the processor speed and clears the Setup passwords.
  • Page 71: Maintenance Menus

    B I O S S e t u p & P O S T Maintenance menu This menu is for setting the processor speed and clearing the Setup passwords. Setup only displays this menu in Configure mode. See the section on “Setup modes” earlier in this chapter for information about setting Configure mode.
  • Page 72: Main Menu

    B I O S S e t u p & P O S T Main menu This menu reports processor and memory information and is for configuring the system date, system time, diskette options, and IDE devices. Feature Options Description BIOS Version No options Displays the version of the BIOS.
  • Page 73: Advanced Menu

    B I O S S e t u p & P O S T Advanced menu This menu is for setting advanced features that are available through the chipset. Feature Options Description Plug & Play O/S Specifies if a Plug and Play operating system is being used.
  • Page 74 B I O S S e t u p & P O S T Peripheral Configuration submenu This submenu is for the configuring the computer peripherals. Feature Options Description Serial port A Configures serial port A. Disabled Enabled Auto assigns the first free COM Auto port, normally COM1, the address 3F8h and the interrupt...
  • Page 75 B I O S S e t u p & P O S T Feature Options Description Mode Specifies the mode for serial port Normal B for normal (COM 2) or infrared IrDA applications. ASK-IR Base I/O address Specifies the base I/O address for serial port B.
  • Page 76 B I O S S e t u p & P O S T Feature Options Description Audio Disabled Enables or disables the onboard audio subsystem. Enabled Disabled Enables or disables the configuration of the LAN device. Enabled ® Embedded PXE Disabled Enables or disables LANDesk Support...
  • Page 77: Ide Configuration

    B I O S S e t u p & P O S T IDE Configuration Feature Options Description IDE Controller Disabled Specifies the integrated IDE controller. Primary Primary enables only the Primary Secondary IDE Controller. Both Secondary enables only the Secondary IDE Controller.
  • Page 78 B I O S S e t u p & P O S T IDE Configuration submenus This submenu is for configuring IDE devices, including: Primary IDE master Primary IDE slave Secondary IDE master Secondary IDE slave Feature Options Description Type None Specifies the IDE configuration...
  • Page 79: Floppy Options

    B I O S S e t u p & P O S T Feature Options Description Ultra DMA Disabled Specifies the Ultra DMA mode for the drive. Mode 0 Mode 1 Mode 2 Floppy Options This submenu is for configuring diskette (floppy disk) drives. Feature Options Description...
  • Page 80 B I O S S e t u p & P O S T Feature Options Description Clear all DMI event Clears the DMI event log after logs rebooting. Event Logging Disabled Enables logging of DMI events. Enabled ECC Event Logging Disabled Enables logging of ECC events.
  • Page 81 B I O S S e t u p & P O S T Resource Configuration submenu This submenu is for configuring the memory and interrupts. Feature Options Description Memory Reservation Reserves specific upper memory C800 - CBFF blocks for use by legacy ISA Available | Reserved devices.
  • Page 82: Security Menu

    B I O S S e t u p & P O S T Security menu This menu is for setting passwords and security features. Feature Options Description User Password Is No options Reports if there is a user password set.
  • Page 83: Power Menu

    B I O S S e t u p & P O S T Power menu This menu is for setting power management features. Feature Options Description Power Management Disabled Enables or disables the BIOS power management feature. Enabled Inactivity Timer Specifies the amount of time before the computer enters 1 Minute...
  • Page 84: Boot Menu

    B I O S S e t u p & P O S T Boot menu This menu is for setting the boot features and the boot sequence. Feature Options Description Quick Boot Mode Disabled Enables the computer to boot without running certain POST Enabled tests.
  • Page 85 B I O S S e t u p & P O S T Feature Options Description First Boot Device Removable devices Specifies the boot sequence from the available devices. Second Boot Device Hard Drive To specify boot sequence: Third Boot Device ATAPI CD-ROM Drive 1.
  • Page 86: Exit Menu

    B I O S S e t u p & P O S T Removable Devices submenu This submenu is for configuring the boot sequence for removable devices. Options Description Legacy Floppy Drives Specifies the boot sequence for the removable devices attached to the computer.
  • Page 87: Upgrading The Bios

    Upgrading the BIOS If necessary, a BIOS upgrade file can be obtained from your Mitsubishi Electric supplier. The upgrade file is in fact a self- extracting archive containing BIOS files, recovery files, text files and the Intel Flash Memory Update Utility. It will have a name such as, for example, 10006bi1.exe...
  • Page 88 B I O S S e t u p & P O S T 11. Use the arrow keys to select the correct file, and then press .bio <Enter>. 12. When asked for confirmation, choose Continue with Programming. 13. When the message appears, remove the Upgrade is Complete diskette and press <Enter>.
  • Page 89 B I O S S e t u p & P O S T Replace the system unit cover and re-connect the power cord. Turn on the computer, and allow it to boot. The recovery process takes a few minutes. Listen to the computer’s speaker: Two beeps and the end of activity in the diskette drive signals a successful BIOS recovery.
  • Page 90: Power-On Self-Test

    B I O S S e t u p & P O S T Select drive A and use the arrow keys to select the correct .lng file and then press <Enter>. When the utility asks for confirmation that you want to flash the new language into memory, choose Continue with Programming.
  • Page 91 B I O S S e t u p & P O S T Error Message Explanation Diskette drive A error Drive A is present but fails the POST diskette tests. Check that the drive is defined with the proper diskette type in Setup and that the diskette drive is installed correctly.
  • Page 92 B I O S S e t u p & P O S T Error Message Explanation Parity Check 1 Parity error found in the system bus. BIOS attempts to locate the address and display it on the screen. If it cannot locate the address, it displays ????.
  • Page 93: Terminal Post Errors And Beep Codes

    B I O S S e t u p & P O S T Terminal POST errors and beep codes There are several POST routines that shut down the computer if they fail. The BIOS sounds a sequence of beeps to identify the point at which POST failed.
  • Page 94 B I O S S e t u p & P O S T Beeps Port 80h Code Explanation 1-3-3-1 Autosize DRAM 1-3-3-2 Initialize POST Memory Manager 1-3-3-3 Clear 512 KB base RAM 1-3-4-1 RAM failure on address line xxxx 1-3-4-3 RAM failure on data bits xxxx of low byte of memory bus...
  • Page 95: 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. 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.
  • Page 96: Power-On Self-Test (Post)

    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 BIOS POST routine tests various hardware components, including memory, and compares the actual configuration of the computer with that recorded in CMOS memory.
  • Page 97: Common Problems

    T r o u b l e s h o o t i n g No boot device available This may indicate a fault in the diskette or hard disk drive, or perhaps a damaged system diskette. Press <F1> to retry, using another system diskette, if possible.
  • Page 98 T r o u b l e s h o o t i n g Mouse If the screen cursor moves jerkily, the ball inside the mouse may require cleaning. Open the base of the mouse can clean the ball in water mixed with a small amount of mild detergent.
  • Page 99 T r o u b l e s h o o t i n g Diskette drive If you have problems accessing a diskette, check that it is inserted correctly, that it has been correctly formatted, that it is not write- protected, and that the diskette drive controller is enabled.
  • Page 100: Equipment Log

    EQUIPMENT LOG Use this page to record pertinent information about your PC. Passwords Software Password Manufacturer’s data You should record the model codes and serial numbers of the system components. Model Serial number System unit Monitor Keyboard Mouse Expansion card 1 Expansion card 2 Expansion card 3 Expansion card 4...
  • Page 101 MITSUBISHI ELECTRIC MITSUBISHI ELECTRIC PC DIVISION PC DIVISION 3500 Parkside Niederlassung Deutschland Birmingham Business Park Gothaer Strasse 27 Birmingham B37 7YS 40880 Ratingen United Kingdom Germany Tel +44 (0) 121 717 7171 Tel +49 (0) 2102 4556 Fax +44 (0) 121 717 7799 Fax +49 (0) 2102 455700

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