Mitsubishi Electric Apricot LS700 User guide

LS700
Owner’s Handbook
NATIONAL
ACCREDITATION
OF CERTIFICATION
BODIES

OWNER’S HANDBOOK
for the
APRICOT LS700

Intel, Pentium ®and Pentium ® II are registered trademarks of Intel
Corporation.
Microsoft, MS-DOS, Windows ®95 and Windows ®
NT are registered
trademarks of Microsoft Corporation in the US and other countries.
Other trademarks mentioned within this document and not listed above
are the properties of their respective owners.
Information contained in this document is subject to change
without notice and does not represent a commitment on the part of
Apricot Computers Limited. Any software described 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 any purpose, without the express written permission of
the publishers.
Copyright © Apricot Computers Limited 1997. All rights reserved.
Published by:
Apricot Computers Limited
3500 Parkside
Birmingham Business Park
Birmingham, England
B37 7YS
http://www.apricot.co.uk
Printed in the United Kingdom

LS700 HANDBOOK CONTENTS/1
CONTENTS
Safety and Regulatory Notices
General i
Standards ii
Legalities ii
Power connection information iii
Notation conventions iv
1 System Description and Installation
Feature summary 1/1
Dimensions 1/1
Front panel controls and indicators 1/2
Back panel connectors and features 1/3
Selecting a site 1/4
Power supply 1/4
Before installing options 1/6
Secondary fan specifications 1/7
Auxiliary speaker specification 1/7
2 Chassis and Components
Before you begin 2/1
Chassis covers 2/2
Add-in cards 2/7
Peripheral carriers and devices 2/11
Installing hard disk drives 2/15
Installing full-width devices 2/20
Other chassis components 2/22
3 System Motherboard
Motherboard layout 3/2
Connectors 3/3
Jumpers 3/3
Jumpers for BIOS Setup functions 3/5
Continued over:

Contents
2/CONTENTS LS700 HANDBOOK
PCI/IDE interface 3/8
I/O features 3/8
CMOS battery 3/10
Fan Connectors 3/11
USB Interface 3/12
Speaker 3/12
Audio Subsystem and connections 3/13
Hardware Monitor Option 3/15
Front Panel Connections 3/16
Motherboard Resources 3/17
4Upgrading
Processor 4/1
How to Install Memory 4/7
Memory Table 4/9
5BIOS and Setup
Overview 5/1
Main Screen 5/3
Advanced Screen 5/13
Security Screen 5/28
Exit Screen 5/31
Note Down Your BIOS Settings 5/32
6Troubleshooting
Problems when Starting 6/1
Troubleshooting Checklist 6/3
The System’s Disk Drives 6/5
Error Messages 6/6
Appendix
Antistatic precautions 2 pages
Cleaning and Transporting 4 pages

Contents
LS700 HANDBOOK CONTENTS/3
Figures/Illustrations chapter/page
1. Front Panel Controls and Indicators 1/2
2. Back Panel Connectors and Features 1/3
3. Check the Input Voltage Setting 1/5
4. Removing the Top Cover 2/2
5. Removing the Access Side Cover 2/4
6. Removing the Non-Access Side Cover 2/5
7. Removing the Bezel 2/7
8. Removing the Expansion Slot Cover Bracket 2/8
9. Removing an Expansion Slot Cover 2/9
10. Installing an Add-in Card 2/10
11. Removing the Floppy/Peripheral Carrier 2/11
12. Removing the Main Peripheral Carrier 2/13
13. Removing the Floppy Diskette Drive 2/14
14. Installing a Hard Drive in the Carrier 2/16
15. Installing a Hard Drive Behind the Power Supply 2/17
16. Installing a Hard Drive in the Main Peripheral Carrier 2/19
17. Install/remove a full-width Peripheral Device 2/21
18. Removing the Fan/Card Guide Module 2/22
19. Removing the Plastic Filler Panel 2/23
20. Installing an Optional Fan 2/24
21. Installing an Optional Speaker 2/25
22. Removing the Power Supply 2/26
23. Removing the Motherboard 2/28
24. Motherboard Components 3/2
25. Back Panel I/O Connectors 3/3
26. Motherboard Jumper Block 3/4
27. Replacing the Battery 3/10
28. Fan 1 Connector 3/11
29. Fan 3 Connector 3/11
30. CD-ROM Audio connector 3/13
Continued over:

Contents
4/CONTENTS LS700 HANDBOOK
Figures/Illustrations chapter/page
31. Telephony Connector A 3/14
32. Wavetable Connector 3/14
33. Telephony Connector B 3/14
34. Audio Line-in Connector 3/15
35. Chassis Security Connector 3/15
36. Front Panel Connections 3/16
37. Removing the Heatsink support and Processor 4/2
38. Installing the Processor 4/5
39. Installing the Heatsink support Bar 4/6
40. Location of SIMM Sockets 4/8
41. Installing a SIMM 4/10

SAFETY AND REGULATORY NOTICES i
SAFETY AND REGULATORY NOTICES
Electrical
The computer uses a safety ground and must be earthed.
The system unit AC power cord is its ‘disconnect device’. Ensure that the
system unit is positioned close to the AC power outlet and that the plug is
easily accessible. The power cord packed with the computer complies with
the safety standards applicable in the country in which it is first sold. Use
only this power cord. Do not substitute a power cord from any other
equipment.
To prevent fire and electric shock, do not expose any part of the computer
to rain or moisture and turn off the computer and unplug all power cords
before moving or cleaning the system unit, or removing any system cover.
Battery
This product contains a lithium battery:
Do not use a metal or other conductive implement to 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 battery manufacturer's
recommended instructions. Do not attempt to recharge, disassemble or
incinerate the discharged battery. Keep away from children.
Laser products
Any CD-ROM drive fitted in this system is classified as a CLASS 1 LASER
PRODUCT according to IEC825 Radiation Safety of Laser Products
(Equipment Classification: Requirements and User's Guide). The CLASS 1
LASER PRODUCT label is located on the underside of the system unit.
It will be in high visibility colours and bear the details shown above.
Use the CD-ROM drive only as described in this manual. Failure to do so
may result in exposure to hazardous radiation.
Ergonomic
When positioning the system unit, monitor and keyboard, take into
account any local or national regulations relating to ergonomic
requirements.

ii SAFETY AND REGULATORY NOTICES
Standards
Safety
EN 60 950 (1992) plus amendments 1 (1993) and 2 (1993). Common
modifications, special National Conditions and Deviations.
Electro-magnetic Compatibility (EMC)
This product complies with the following European EMC standards:
Emissions EN55022 Class B
Immunity EN50082 Level 1
German Acoustic Noise Regulation
Sound power level 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 following European Directives:
Low Voltage Directive 73/23/EEC
EMC Directive 89/336/EEC
CE Marking Directive 93/68/EEC
and where applicable:
Telecommunications Directive 91/263/EEC
CAUTION
This system complies with the CE marking directive and its strict legal
requirements. Use only Apricot tested and approved parts. Failure to do so may
result in invalidating both the compliance and your warranty. All expansion
cards or upgrade components must carry CE marking.

SAFETY AND REGULATORY NOTICES iii
Power connection information
Typical AC plugs
250V
E
LN
E
NL
250V
E
NL
125V
250V
NL
E
250V
BS1363A SHUCO NEMA 5-15P SRAF 1962/DB16/87 ASE 1011
U. K. Austria Belgium Taiwan Denmark Switzerland
Finland France Thailand
Italy Germany Japan
Sweden Norway USA
Holland Canada
Procedure
CAUTION
Any ancillary equipment using an AC power supply cable should be earthed.
The power supplies in the computer and the monitor are correct for the
country in which the system is first sold. Do not alter any switch 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 supply, system to monitor, all
related peripherals.) Then switch on or connect the AC supply.
♦Switch on the monitor first, then the computer followed by the
peripherals, such as a printer.
WARNING
The power switch on the front of the computer does not isolate the computer
from the supply. You must unplug the AC supply cable from the computer or
the wall outlet before attempting to remove any covers.

iv SAFETY AND REGULATORY NOTICES
Power Cable Connections - UK ONLY
This equipment is supplied with an AC power lead that has a moulded,
non-removable, 3-pin AC plug.
Always replace the fuse with one of the same type and rating which is BSI
or ASTA approved to BS1362. Always refit the fuse cover, never use the
plug with the fuse cover omitted.
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.
Notation conventions
The conventions listed below are used throughout this manual.
<F1> A letter, number, symbol, or word enclosed in < > represents a key on your
keyboard. For example, the instruction ‘press <F1>’ means press the key
labelled ‘F1’ on your keyboard.
<Enter> Other manuals refer to <Enter> as RETURN, CARRIAGE RETURN,
<CR>, or use an arrow. All of these terms are interchangeable.
<x + y> Two or three key names, separated by plus signs, indicate multiple-key
entries. For example, <Ctrl + Alt + Del> means hold down <Ctrl> and
<Alt> and press <Del>.
The special notices listed below are used throughout this manual to
emphasise specific information:
WARNING
WARNING indicates a hazard that can cause personal injury or equipment
damage if the hazard is not avoided.
CAUTION
CAUTION indicates a hazard that might cause personal injury, damage to
hardware, or software if the hazard is not avoided.
NOTE
Notes provide information and may be used to emphasise a recommended
sequence of steps.

LS700 HANDBOOK 1/1
1 SYSTEM DESCRIPTION
AND INSTALLATION
This chapter provides a basic description of the LS700, along
with simple installation information.
Feature Summary
♦A removable carrier with bays that can accommodate
one of the following variations:
◊Three half-height full-width peripherals
◊One full-height and one half-height full-width
peripherals
◊Two half-height full-width peripherals and one
narrow peripheral
♦A removable carrier with bays that can hold one floppy
diskette drive and one narrow hard disk drive.
♦A non-removable bay that can hold one narrow hard
disk drive.
♦200 watt (peak) ATX power supply switchable between
115 and 230 volts AC.
♦Seven slots for add-in cards.
♦Padlock hole.
Dimensions
The weight includes the complete chassis assembly with the
power supply and the optional fan.
Width 22.7 cm Height (feet installed) 37.5 cm
Depth 43.2 cm Weight (chassis only) 7.97 kg

System description and installation
1/2 LS700 HANDBOOK
Front Panel Controls and Indicators
Figure 1 Front Panel Controls and Indicators
E
F
A
B
C
D
A. Power on/off light. Turns on when the power is on.
B. Hard disk light. Turns on when the computer reads or
writes data to an IDE hard disk.
C. Floppy diskette drive.
D. Bay for full-width devices, shown here with an optional
CD-ROM drive installed.
E. Power control button. Press to turn on the computer.
F. Bays for other full-width devices, shown with two
plastic filler panels in place.

System description and installation
LS700 HANDBOOK 1/3
Back Panel Connectors and Features
Figure 2 shows a typical configuration including a power
supply and external motherboard I/O connectors.
Figure 2 Back Panel Connectors and Features
C
D
A
BE
A. Power supply fan vent holes.
B. Socket for AC power cord.
C. Add-in card slots.
D. Typical motherboard I/O connectors. See the
motherboard section for further information.
E. Input voltage select switch.

System description and installation
1/4 LS700 HANDBOOK
Selecting a Site
Choose a site that is:
♦Clean and as dust free as possible.
♦Well ventilated and away from sources of heat includ-
ing direct sunlight.
♦Well away from sources of water or damp.
♦Stable and protected from sources of vibration or
physical shock.
♦Isolated from strong electromagnetic fields produced by
electrical devices, such as large air-conditioning units.
♦Equipped with a properly earthed power outlet within
easy reach.
♦In regions that are susceptible to electrical storms, it
may also be advisable to plug your system into a surge
suppresser.
◊Disconnect telecommunication lines to any modem
during an electrical storm.
Power Supply
Checking the Input Voltage Setting
A 200 watt (peak) power supply is integrated into the chassis
to provide power for the motherboard, add-in cards, and
peripheral devices. A switch on the back panel can be used to
set the power supply to operate at:
♦115 V AC (in the range of 90 - 127 V AC), or
♦230 V AC (in the range of 180 - 255 V AC)
To verify that your system has the correct setting for your
environment, check the input power selection switch. This
should already be correctly set for the country of sale.

System description and installation
LS700 HANDBOOK 1/5
Figure 3. Select the Input Voltage Setting
115
230
WWAARRNNIINNGG
The power cable shipped with the system is correct for the
country of supply. If you wish to use the computer in another
country, it may not be suitable, contact your Apricot dealer for
information.
AC Input
Voltage (50/60 Hz) Current
115 V (90-127 V) 3.5 A
230 V (180-255 V) 2.0 A
WWAARRNNIINNGG
To avoid damage to the motherboard or power supply, do not
exceed a total of 160 watts of continuous power draw, or a 200
watt surge for a maximum of 12 seconds.

System description and installation
1/6 LS700 HANDBOOK
Power Supply Output
DC Voltage Current (Max. continuous)
+12 V 6.0 A
+5 V 18.0 A
+5V Standby 0.01 A
+3.3 V 14.0 A
-5 V 0.3 A
-12 V 0.8 A
NNOOTTEE
Due to load sharing among the power supply outputs, the
maximum continuous current outputs of all voltages cannot be
achieved simultaneously.
Before Installing Optional Items
Before installing other items, such as drives, add-in cards,
etc., connect a keyboard and a monitor to the system, switch
on and let the power-on self test (POST) run. This will be
followed by initialisation of the pre-installed Operating
System software, during which you will be asked to enter
personal registration details.
Once this has been fully completed, you can shut down the
operating software, turn the power off, then install any
drives, add-in cards, or upgrades, the instructions for which
are given in the following chapters.
This is to allow ‘Plug and Play’ add-in cards and their special
features to be correctly detected and configured.

System description and installation
LS700 HANDBOOK 1/7
Secondary Fan Specifications
This chassis has been tested for adherence to thermal
specifications using a single system fan and a full
complement of typical add-in cards and peripherals.
Because the power and cooling requirements for add-in card
components vary widely, this testing cannot guarantee that
every add-in card will meet its particular thermal
requirements in all possible system configurations.
If you integrate the system with add-in cards that draw
significant power, it is recommended that you install a front
cooling fan. If you add a secondary fan, it must meet these
specifications. Full installation information can be found in
chapter 2. Suitable fans can be obtained from your Apricot
supplier.
Parameter Specification
Size 80 mm
Voltage 12 V DC
Airflow 26 CFM
Auxiliary Speaker Specifications
Some systems will be supplied with only a simple ‘beep’
speaker fitted to the motherboard. If you add an auxiliary
speaker, it must meet these specifications. Full installation
information can be found in chapter 2.
Parameter Specification
Size 57 mm (approx)
Impedance 8 Ohms

LS700 HANDBOOK 2/1
2 CHASSIS AND
COMPONENTS
This chapter describes how to take apart and reassemble the
chassis and the major components.
Before You Begin
♦Be sure to do each procedure in the correct order.
♦Set up an equipment log to record the computer’s
model and serial numbers, all installed options, and
other information about the computer. If you need this
information, it will be easier to consult the log than to
open up and examine the computer.
♦Observe antistatic precautions at all times whenever any
cover is removed and while handling any components.
◊Information and guidance on antistatic precautions
can be found in the appendix at the rear of this
handbook.
♦You will need a Phillips (#2 bit) and a flatblade
screwdriver.
♦Turn the computer power off by pressing the power
control button.
♦Unplug the AC power cord from the back of the
chassis.
♦Turn off and disconnect all peripheral devices
connected to the computer, e.g. printer or modem.
WWAARRNNIINNGG
The power supply in this computer contains no user-serviceable
parts. To avoid personal injury or damage to your equipment,
refer repair or replacement of the power supply to qualified
technical personnel only.

Chassis and components
2/2 LS700 HANDBOOK
Chassis Covers
Removing the Top Cover
1. Observe the precautions in ‘Before You Begin’.
2. If you are removing the cover for the first time, you
may need to remove the plastic plug in the padlock
hole (see Figure 4). Save it for re-installation.
◊If you installed a padlock on the chassis, unlock the
padlock and remove it.
3. Grasp the top cover at the rear of the chassis.
4. Slide the cover towards the rear of the chassis until it
stops (just over 1cm).
5. Lift the cover away from the chassis.
Figure 4. Removing the Top Cover