Mitsubishi Electric apricot ls/vs550 Owner'S Handbook Manual Download Page 36 | Manualshive

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S y s t e m m o t h e r b o a r d

5/2 LS/VS550 OWNER’S HANDBOOK

Jumpers and control connections

14

2

4

1

3

5

6

7

12

13

11

10

9

8

1

J80 - audio enable/disable

8

PL74 and PL75 - fan connectors

2

PL86 - speaker links

9

J70 - Reserved. Do not move.

3

J40 - hard disk LED select

10

J72 - battery disconnect

4

J71 - Reserved. Do not move

11

J1 to 4 - CPU clock divisor

5

J90 and J91 - SCSI setting links

12

J32 - board bus frequency

6

PL70 and PL71 - case connections

13

J30 and J31 - BIOS links

7

PL20 - front bezel daughterboard

14

J60 - floppy drive setting

Warning

Warning

Do not alter jumper settings under normal operation as permanent
damage could be caused to motherboard components.

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Summary of Contents for apricot ls/vs550

Page 1: ...LS VS550 Owner s Handbook NATIONAL ACCREDITATION OFCERTIFICATION BODIES ...

Page 2: ...OWNER S HANDBOOK APRICOT LS VS550 with Pentium Pro processor ...

Page 3: ...bed in this manual is furnished under a license agreement The software may be used or copied only in accordance with the terms of this agreement It is against the law to copy any disk supplied for any purpose other than the purchaser s personal use No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording for a...

Page 4: ... 1 Audio subsystem 1 2 Turning on and booting 1 2 Energy saving features 1 3 Turning the power off 1 4 Opening the system unit 1 5 The components inside 1 6 2 THE SYSTEM DRIVES Using the floppy drive 2 1 Using a CD ROM drive 2 2 Optional PD drive 2 4 Hard disk drives 2 6 Installation of a second HDD 2 7 3 SYSTEM EXPANSION Configuring a card 3 1 Installing a card 3 5 ...

Page 5: ...ures 5 1 Jumpers and control connections 5 2 Replacing the CMOS battery 5 6 Upgrading the motherboard 5 7 Adding more memory 5 7 Upgrading the processor 5 9 6 SYSTEM BIOS AND SETUP Entering Setup 6 1 Control keys 6 2 Main menu screen 6 3 Beep codes 6 11 Error messages 6 13 Note down your settings 6 14 Appendix section Cleaning and Transporting 4 pages Antistatic precautions 2 pages ...

Page 6: ... remove the battery If a short circuit is made between its positive and negative terminals the battery may explode Replace a discharged configuration CMOS battery with one of the same type Dispose of the battery in accordance with the manufacturer s recommended instructions and DO NOT attempt to recharge disassemble or incinerate the discharged battery Keep away from children Laser products Any CD...

Page 7: ...evel is less than 70 dB A according to DIN 45635 Part 19 ISO 7779 Notes All interconnecting cables e g Microphone headphone and speaker and communication cables should be less than 2 metres in length If cable extensions are used ensure adequate earth connections are provided and screened cables are used Legalities This equipment complies with the relevant clauses of following European Directives L...

Page 8: ...itch settings on the rear of the system If you wish to use the computer in another country it may not be suitable contact your supplier or an authorised Apricot dealer Before connecting up any parts of the system ensure that the AC supply is switched off or disconnected First connect up the keyboard mouse monitor signal cable and audio cables as appropriate Connect up all AC cables System to suppl...

Page 9: ...movable 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 Never substitute a power cord from any other appliance If you suspect a fault with the AC power lead obtain a replacement from your supplier or authorised maintainer ...

Page 10: ... 2 AC supply socket 8 Serial port COM1 14 Audio connections 3 Supply selector switch 9 Serial port COM2 15 System security loop 4 AC outlet for monitor 10 Parallel printer port 16 Optional case lock 5 USB port 11 Not used 6 Keyboard port 12 Side air vents detailed on following page Security The optional Security case lock 16 can help prevent casual and unauthorised removal of the cover while the s...

Page 11: ...phones and passive speakers Phantom power is provided for microphone types that require this facility Electret type 8 Ohm impedance minimum on both microphone and speakers Turning on and booting the computer Turning the power on To turn on the computer press the lower or white POWER button The green POWER ON light should come on to show that the system unit is powered The monitor has its own power...

Page 12: ...ystem disk A floppy disk bearing at least the rudiments of an operating system If the computer detects a disk in the floppy drive it tries to boot from it If it is a non system disk the computer will ask you to replace it Bootable hard disk Most computers with a hard disk containing pre installed software arrive set up with a suitable boot partition The operating system is usually already in place...

Page 13: ...ystem BIOS gives access to the control settings of the low power mode Turning the power off Remember these two simple points Close down any applications you are running and save any files you have altered or created Data held only in the computer s memory will be lost when you turn off the computer Always exit from or shut down Windows This procedure deletes the temporary operational files it crea...

Page 14: ...river Warning Warning Turn off the computer along with all peripherals and unplug all power cords before removing the top cover Take suitable antistatic precautions while the system cover is removed 1 Turn off both the system unit and the monitor and unplug all power cords from rear of the system unit 2 Remove the two casing screws and put them to one side 1 10101 2 3 Release the caselock or remov...

Page 15: ... 4 3 5 6 2 7 8 1 1 Power supply 5 System cooling fan 2 Hard disk below CD ROM 6 Motherboard 3 CD ROM drive 7 Expansion riser board 4 Floppy drive 8 Rear audio board option Please note that for clarity all the power and signal cables are not shown in the above illustration ...

Page 16: ...window first with the label side uppermost into the drive This will push open the drive door COMPACT 2 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 3 The system should now be able to access the disk and the information it may contain While the system is accessing the disk the drive...

Page 17: ... not moved while a CD is in the drive especially if the CD is being accessed at the time COMPACT 2 3 4 5 1 1 Disc drawer 4 Emergency eject hole 2 Headphone jack and volume 5 Eject button 3 Activity light Warning Warning The laser beam inside the CD ROM drive is harmful to the eyes if looked at directly Do not attempt to remove the drive cover or otherwise disassemble the CD ROM drive If a fault oc...

Page 18: ...the audio tracks or to read data from it To remove a compact disc press the eject button and then lift out the CD It is best to close the drawer to prevent dust getting in unless you intend to put in a new CD Care of CDs Keep CDs well away from dust and moisture and avoid touching the surface of the CD Avoid extremes of temperature and exposure to direct sunlight as these may cause the disk to war...

Page 19: ...ere both a CD ROM drive and an efficient re writable backup device is needed There is an indicator LED to show the type of disk which has been inserted but the rest of the controls are very similar to a conventional CD ROM drive The drive can use any PD cartridges bearing the logo If the cartridge is not formatted you will be prompted to format it All the standard types of CD can be used in this d...

Page 20: ...ume The drive can handle the large and small types of CD ROM as well as music CDs or it will accept the PD recordable cartridge PD CD BUSY These cartridges have a capacity similar to a CD ROM but with the difference of being re writable They have a shelf life of 30 years or more unlike magnetic material which decays over a relatively short period of time Like floppy disks they have a write protect...

Page 21: ...rs are supplied with one internal or primary HDD This will normally be designated as the C drive The operating system will normally be installed on this drive The HDD can have only one active partition i e the bootable disk but larger HDDs may be supplied with more than one partition Caution Caution Apricot Computers Ltd tests many types of hard disks from a variety of manufacturers and all of our...

Page 22: ...emove the cover Take care to observe anti static precautions at all times while the system cover is removed Information on suitable precautions can be found at the rear of this manual Remove the floppy drive assembly by loosening its screws sliding it towards the rear of the system and lifting it out It may be necessary to temporarily disconnect drive cables Take careful note of how they are fitte...

Page 23: ... the exposed control board then refit the assembly to the baseplate Fit an appropriate power connector to the new drive and connect up its signal ribbon cable The ribbon cable is striped to indicate pin 1 Correct orientation must be observed Pin 1 is usually at the end nearest the power connector Refit the CD ROM drive assembly followed by the floppy drive assembly Tighten all the screws as you fi...

Page 24: ...e preparation and setting up before they can be used 2 10101 1 1 3 2 1 Half PCI 2 Full PCI 3 Half ISA The riser board can accommodate a number of expansion cards as shown in the above illustration The normal fitted blanking plates are not shown for clarity Configuring the card The installation procedure for many expansion cards involves setting up or configuring the card so it works correctly in t...

Page 25: ...pplier or manufacturer Most modern cards are supplied with default settings which are often an industry standard It is best to rely on these where possible ISA Interrupt request level IRQ The interrupt request level or IRQ either term can be used is the line over which the expansion card sends a signal to get the attention of or interrupt the processor Many of these are reserved for components on ...

Page 26: ... the parallel port you can disable it with the BIOS Set up utility freeing IRQ7 Do not disable ports unless you have no intention of using them 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 lists the DMA channels used by the computer ...

Page 27: ...t 1 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 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 RO...

Page 28: ...ower cords 2 Take suitable anti static precautions and remove the system unit cover Information on suitable precautions can be found at the rear of this manual 3 First decide in which of the available slots you wish to install the card In general it is easiest to start with the lowest slot and work upwards 4 Check on two things the type of board ISA or PCI and then its length Not all slots take th...

Page 29: ...l the screws clamps that you removed in Step 5 10 Connect any necessary signal cables to the card 11 Check to ensure no other cables or connectors have become dislodged and replace the system unit cover Before you switch on read the manuals supplied with the card If you are certain all is correct switch on Your first task if you have just fitted an ISA card will be to enter the BIOS to register th...

Page 30: ...ng Problems when starting If you suspect a blown fuse In the United Kingdom and some other countries AC plugs contain fuses Your Apricot computer is initially supplied and fitted with the correct supply cable and fuse for operation in the country in which it is sold If the fuse in the system s unit AC plug blows when you turn on the computer this may be caused by an AC power surge but is more ofte...

Page 31: ...should be to turn off the computer wait 20 to 30 seconds and then turn it on again to see if the error is transitory or persistent Persistent POST errors may indicate a fault in the system Check that all external cables are securely connected Try running the BIOS Setup utility to reconfigure the system Open up the system unit and check that all internal signal and power cables are securely connect...

Page 32: ... If the problem persists contact your supplier or authorised maintainer 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 Connections Check that all power and signal cables are securely connected to the c...

Page 33: ...utility Check also that the software which drives or uses the card is correctly configured Check in the chapter Expansion Cards for information and in System BIOS and Setup to see whether your chosen settings are useable System BIOS Check finally the system BIOS to ensure that it has not been disturbed from the original settings If the settings appear to have altered there may be a fault with the ...

Page 34: ...a 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 There is also the write protect tab to check Make sure that you are trying to access the drive by the correct icon for the media in use Hard disk drive If you encounter problems accessing the hard disk drive use the BIOS Setup utility to check that the drive is c...

Page 35: ...nnector 15 VRM8 socket 2 Aux audio connector 9 IDE secondary connector 16 Zif socket for processor 3 modem audio input 10 Floppy drive connector 17 CMOS battery CR2032 4 Main PSU connections 11 PSU 3 3V aux connector 18 Diagnostic board port 5 Rear audio connections 12 Memory slot MM1 19 Expansion riser socket 6 PSU logic control not used 13 Memory slot MM2 20 External ports 7 SCSI connector 14 Me...

Page 36: ...e 3 J40 hard disk LED select 10 J72 battery disconnect 4 J71 Reserved Do not move 11 J1 to 4 CPU clock divisor 5 J90 and J91 SCSI setting links 12 J32 board bus frequency 6 PL70 and PL71 case connections 13 J30 and J31 BIOS links 7 PL20 front bezel daughterboard 14 J60 floppy drive setting Warning Warning Do not alter jumper settings under normal operation as permanent damage could be caused to mo...

Page 37: ...O I 7 2 I O I O 9 2 I O O O 11 2 O X X I Strictly reserved O O O O 2 I jumper fitted O No jumper X Don t care Bus speed select J32 Frequency Jumper J32 60 MHz No jumper 66 MHz Jumper fitted Flash BIOS J30 J31 Recovery J30 Program enable J31 2 3 Normal 1 2 Enable 1 2 Recover 2 3 Disable Battery backup J72 Erase CMOS settings 1 2 Normal 2 3 1 sec to discharge ...

Page 38: ...E drives fitted 1 2 SCSI Enabled SCSI drives fitted 2 3 Floppy Disk mode J60 Pins Floppy options J60 1 3 3 mode operation Software control for 1 2Mb mode operation in Japan Speakers PL86 This is only for special system cases with internal stereo speakers the normal casing is only fitted with a single beep type speaker connected to PL71 Pins Function Connection PL86 1 Stereo Left Left speaker pins ...

Page 39: ...IRDA input Hard disk LED pullup 6 Ground Ground 7 IRDA output Keylock switch 8 Ground Keylock switch return 9 Not used Power on LED signal 10 Not used Power on LED return 11 Speaker out BEEP Standby LED signal 12 Message LED signal Standby LED return 13 Message LED pullup Reset switch return 14 Not used Reset switch 15 Not used Front panel connector PL20 Analogue ground 1 2 KEYED No connection 3 4...

Page 40: ...before removal Warning Warning Do not use a metal or other conductive implement to remove the battery If a short circuit is accidentally made between its positive and negative terminals it may cause the battery to explode 4 Lift the edge of the battery far enough to clear the base of the holder then slide the battery from under the contact spring 5 Taking care not to touch the top or bottom surfac...

Page 41: ...sks are not difficult but if you do not feel confident about the work involved you may wish to have your supplier or service organisation complete it for you Warning Warning Never carry out any work inside the computer with AC power applied Turn off the computer and unplug all power cords before starting work Adding more memory Memory can be fitted in three vertical DIMM sockets which must be popu...

Page 42: ...ing DIMMs before going on to install the new modules To install a DIMM 1 Take the module out of its anti static packaging Hold it by its ends and avoid touching the metal contacts 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 snapp...

Page 43: ...will be automatically detected by the system BIOS if an error message occurs check that you have Correctly fitted the DIMMs in their slots fitted DIMMs of the correct type It may be necessary to refit the original memory to check if there is a problem with your new modules If in any doubt contact your supplier Remember that all new DIMMs must carry the appropriate approval markings etc to avoid in...

Page 44: ...f 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 Handle carefully as there may be heat transfer compound on the heatsink face There may be a power lead for the fan if the processor has one fitted Take note of the fan power lead polarity befor...

Page 45: ... LS VS550 OWNER S HANDBOOK 5 11 int le 6 Lift the processor out of the socket and place it on an anti static surface outside the system unit Hold the processor by its edges and avoid touching any of the metal pins int le ...

Page 46: ...mly hooked into its down position 5 Refit the heatsink if the new processor was supplied without one and secure correctly the retaining spring Ensure the heatsink is central on the processor and is securely held If the spring is no longer required remove it completely by disengaging it from its hook on the rear of the ZIF socket The upgrade processor may have a fan power lead to be connected to th...

Page 47: ...ry and maintained by a small battery so the configuration is preserved while the computer is switched off along with other settings like the date and time Caution Caution The BIOS has been set in our factory for the optimum system performance and operation It is not advisable to alter any settings under normal use Entering Setup Not long after turning on your computer the Mitsubishi symbol appears...

Page 48: ... for example by the addition of more system memory a new hard drive or an expansion card In this case you may have to define and check the new configuration In any areas where the POST has detected changes or there is some contentious issue the BIOS setup menu s buttoned items will change to show an arrowhead symbol This can be followed down through any further levels of menu until you arrive at t...

Page 49: ...n you entered BIOS setup To restore the original default setting Main menu screen When you start BIOS Setup a main menu screen appears with the following options System summary Devices and I O ports Date and time System Security Start options Advanced setup Plug and Play Error Log Power management Save settings Restore settings Load default settings Exit setup Lines with a y bullet in front of the...

Page 50: ...annot 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 Devices and I O ports Serial ports A B COM1 COM2 This allows you to select the I O ports and interrupts used by the two serial ports The system will normally auto configure so it is best to...

Page 51: ...ting Floppy disk drives This lets you specify what diskette and floppy disk drives are fitted Diskette drive A which is fitted by default is invariably a 1 44 Mbytes 3 5 drive You will not be required to change this setting Video Setup If selected this opens a screen which details the video controller and the size of the video memory IDE Controller This must be enabled if the system is supplied wi...

Page 52: ...n 24 hour format Use the control keys to move around and change settings Date The date is in the UK Day Month Year format The procedure for setting the date is the same as for the time System security Power on Password This option allows you to set a password that is required every time the computer is turned on or rebooted Only people who know the password will be able to use the computer The pas...

Page 53: ... prompted at all but will wait for the user to type the password and press ENTER It is important that authorised users of the computer are told to expect this or they may think that the computer has stopped working 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 To chan...

Page 54: ...s Operation If this option is Disabled POST will look for an attached monitor and report an error if it is faulty or missing If Enabled POST will allow the computer to start without a monitor Keyboardless Operation If this option is Disabled POST will look for an attached keyboard and report an error if it is faulty or missing If Enabled POST will allow the computer to start without a keyboard Sta...

Page 55: ...ced Setup from the menu Cache Control A simple dialog allows you to enable or disable the computer s memory cache Some older software is speed sensitive and on rare occasions you may need to disable the cache ROM Shadowing To shadow ROM means to copy its contents into the computer system or random access memory RAM ROM has longer access times and the processor can access RAM faster than ROM Also t...

Page 56: ...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 There is a separate option for each resource memory I O ports DMA and interrupts Some areas are allocated by the system and are not shown Each resource can be set to either Plug and Play or ISA legacy If shown as Plug and Play it is assumed by the system not ...

Page 57: ...ntrol Disable Enable see warning below Caution Caution The monitor supplied with your computer is designed to work with these energy saving features If you use another or older monitor It may not be compatible It may cause permanent damage Beep codes No beeps If no beeps are heard at all the speaker may be disconnected or there may be a speaker circuitry fault One short beep Marks the completion o...

Page 58: ...and try again If the fault persists make a note of it and call your maintenance provider Number of beeps Meaning 1 1 3 CMOS write read test failure 1 1 4 BIOS ROM checksum failure 1 2 1 Programmable Interval Timer test failure 1 2 2 DMA initialisation failure 1 2 3 DMA page register read write test failure 1 2 4 RAM refresh verification failure 1 3 1 First 64K RAM test failure 1 3 2 First 64K RAM ...

Page 59: ...ion information 1162 Serial configuration 163 Time of day not set preboot 1762 Hard disk configuration 164 Memory size does not match CMOS 1780 Fixed disk 0 failure 165 Add remove MC card 1781 Fixed disk 1 failure 166 Memory configuration change 1782 Fixed disk 2 failure 175 Bad EEPROM CRC 1 1783 Fixed disk 3 failure 176 System tampered 1800 No more IRQ available 177 Bad PAP checksum 1801 No more ...

Page 60: ...S y s t e m B I O S a n d S e t u p 6 14 LS VS550 OWNER S HANDBOOK Notes Use this area to make a note of your current BIOS settings for future reference ...

Page 61: ...APPENDIX Cleaning and transporting Suitable antistatic precautions ...

Page 62: ...it with a soft slightly damp clean cloth Occasionally check the air vents on the rear and sides of the system unit Dust and fluff can block the vents and limit the airflow A small clean soft brush may be useful Occasionally clean the removable media drives using a special disk cleaning kit These are available from many sources including your Apricot dealer The monitor Occasionally wipe the monitor...

Page 63: ... 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 Dust and fluff often accumulates in the ball tracking mechanism of the mouse and should be checked for regularly To clean the mouse follow this procedure 1 Unplug the mou...

Page 64: ...ropped or handled roughly Do not transport the computer with either a floppy disk or a CD ROM left in the drives as they may cause damage both to the media and to the drive Do not attempt to pick up the computer using either of the drives as a lifting point Do not try to move the computer while it is plugged into the AC power supply or with any other cables network printer etc still attached and e...

Page 65: ... risk from static discharge while the top cover is off as the electronic components of the motherboard are exposed Memory modules cache upgrades and OverDrive processors are other examples of electrostatic sensitive devices ESSDs All work that involves removing the cover must be done in an area completely free of static electricity We recommend using a Special Handling Area SHA as defined by EN 10...

Page 66: ... components only by their edges avoiding their electrical contacts Never touch the components or electrical contacts on the motherboard or on expansion cards In general do not handle static sensitive items unnecessarily Keep all conductive material foodstuffs and especially liquids away from your work area and the open computer ...

Page 67: ...MITSUBISHI ELECTRIC PC DIVISION APRICOT COMPUTERS LIMITED 3500 PARKSIDE BIRMINGHAM BUSINESS PARK BIRMINGHAM B37 7YS UNITED KINGDOM Tel 44 121 717 7171 Fax 44 121 717 3692 http www apricot co uk ...

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