Mitsubishi Electric | Apricot VS | Removing the left side panel

ADD-ON INSTALLATION GUIDE
FT//s Pentium
apricot
MITSUBISHI ELECTRIC
Pentium and OverDrive are trademarks of Intel Corporation.
Micro Channel is a trademark of International Business Machines Corporation.
Information contained in this document is subject to change without notice and
does not represent a commitment on the part of Apricot Computers Limited. The
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.
All rights reserved; no use or disclosure without written consent.
Copyright © Apricot Computers Limited 1993
Published by
Apricot Computers Limited
3500 Parkside
Birmingham Business Park
B37 7YS
MITSUBISHI ELECTRIC
Printed in the United Kingdom
Part no. 15225231
Contents
Introduction 2
Anti-static precautions 3
Power down procedure 4
Power up procedure 4
Removing the left side panel 5
Adapter cards 6
Upgrading memory 8
Processor upgrades 12
1
Introduction
This guide contains instructions on installing expansion
cards, extra memory and processor upgrades in your
computer. This document should be your only source of
information when installing any of these.
You should read this document before purchasing extra
memory or a processor upgrade. If, having read the
relevant instructions, you are not confident about installing
the upgrade, you may wish to have your supplier or service
organisation install it for you.
Before you start installing the upgrade you should be
thoroughly familiar with all the relevant instructions in this
guide.
Warning
Never carry out any work on the equipment with power
applied. Always switch off at the mains, isolate any
batteries and remove the power lead from the equipment
before starting work.
2
Anti-static precautions
All electronic components and equipments are sensitive to
static electricity. Even small electrostatic discharges can
render components useless or severely shorten their
working life, therefore you should always take preventive
measures.
No work should be carried out on any item unless it is in a
Special Handling Area (SHA) as defined in BS CECC
00015:Part 1. In general this involves:
* a common earth point
* an earthed bench or bench mat
* an earthed wrist strap
Note
An antistatic earthing point is provided on the rear panel of
the system unit.
3
Power down procedure
If LOC Technology is in use, a user of appropriate authority
must be logged on before the system can be powered
down.
1. Push the STANDBY button
2. Confirm by pushing the button under the ‘Y’ on the
LCD display.
3. Isolate the internal UPS battery by setting the
BATTERY ISOLATION switch to the ‘0’ position.
4. Unplug the mains power supply.
Power up procedure
1. Ensure that the battery isolation switch is in the ‘0’
position.
2. Plug in the mains power supply.
3. Set the BATTERY ISOLATION SWITCH to the ‘1’
position.
4. Push the POWER button.
5. Perform any required power-on security procedure.
4
Removing the left side panel
The left side panel (as viewed from the front) is located by
three pegs at the front, and secured by two thumbscrews
and a keylock at the rear.
The left side panel allows access to the electronics bay
where the motherboard and power distribution board are
located.
To remove the side panel:
1. Power the system down.
2. Unlock the security lock on the rear panel.
3. Unscrew the two thumbscrews.
4. Swing the rear of the panel away from the system unit
until the rear flanges are clear of the system unit.
5. Support the front of the panel and pull it rearwards
to free it from the pegs.
CASING SCREWS
Replacement is simply the reverse of removal.
5
Adapter cards
Eight 32-bit Micro Channel slots are available on the
motherboard for adapter cards. One slot is always
occupied by a hard disk controller. Each slot has a blanking
plate in the rear panel, and a notch in the bridge assembly
at the front of the system unit.
FANS
EXPANSION
SLOTS
BLANKING
PLATE
ADAPTER
CLAMP
ADAPTER SUPPORT
METALWORK
The two slots nearest the top of the system unit (labelled 6
and 1) are both video slots. Slot 6 is fitted with the auxiliary
video extensions. Slot 1 is fitted with the matched memory
and base video extensions.
Drive controllers must occupy slots 4, 5, 7 and 8. The first
controller always occupies slot 4 and the second (if fitted)
slot 5.
6
It is recommended that slots 6 and 1 are left unoccupied
(except for video cards), and slot 5 is left unoccupied
(except for a second drive controller). Any other adapter
cards should be fitted in slots 2, 3, 5 and 8 working down
the system unit. Only after all these slots are full should
cards other than video adapters or drive controllers be
fitted in slots 6, 1 or 7.
To install an adapter card:
1. Power the system down.
2. Remove the left side panel of the system unit.
3. Loosen the thumbscrew at the bottom of the
blanking plate for the slot that the adapter is to
occupy, and remove the blanking plate.
Note
If the thumbscrew is tight it may be necessary to
use a screwdriver or coin to release the
thumbscrew.
4. Place the adapter card above the required
connector making sure that the front edge of the
card locates in the appropriate notch in the bridge
assembly.
5. Push the card firmly into the connector. Do not use
excessive force.
6. Secure the card by tightening the thumbscrew at the
bottom of the rear panel of the card.
7. Replace the left side panel.
8. Power the system up with the Reference diskette
and reconfigure for the new adapter.
7
Upgrading memory
The FT//s Pentium motherboard has eight SIMM sockets
which support a maximum of 256 Mbytes of RAM. These
eight sockets are arranged in two banks of four. If SIMMs
are installed in a bank all four SIMMs must be identical.
The eight SIMM sockets are located at the top front of the
motherboard as shown in the following illustration.
SIMMS
MM7
MM5
MM1
MM3
MM4
MM8
MM2
MM6
Each of the sockets is identified on the motherboard, from
MM1 to MM8. The odd numbered sockets form bank 0, the
even numbered ones bank 1.
8
Apricot supplies and supports upgrades of 16, 32, 64 and
128 Mbyte capacities. The following table lists the possible
capacities:
Bank capacity (Mbytes)
Bank 0
Bank 1
16
16
32
32
32
64
64
64
64
128
128
128
128
128
16
16
32
16
32
64
16
32
64
128
Total capacity
(Mbytes)
16
32
32
48
64
64
80
96
128
128
144
160
192
256
Note
For all cases the SIMMs in bank 0 could be swapped with
those in bank 1 with no adverse affect.
9
Installing SIMMs
Obtaining access
To obtain access to the SIMM sockets you must remove
the left side panel as described in Removing the left side
panel.
Removing SIMMs
If you wish to install an upgrade in a bank which is already
occupied you must first remove the existing SIMMs. For
each SIMM in the bank:
1. Lever the metal clips on each end of the socket
gently away from the SIMM using your forefingers.
2. Place your thumbs on the top edge of the SIMM and
move it gently forwards.
3. When the SIMM has rotated through 20°, taking care
to avoid touching any of the components on the
SIMM, grip the top corners of the SIMM between
thumb and first finger and carefully pull the SIMM out
of the socket.
Inserting SIMMs
For each socket in the bank:
1. The SIMM will only install in one orientation. There
is a cutout at one end of the SIMM next to the
connector strip.
Hold the SIMM with the cutout at the bottom and the
metal connector strip nearest the motherboard.
10
2. Position the SIMM by the socket with the SIMM
tilted slightly towards the rear of the system unit.
3. Lower the SIMM into the socket, and ensure that the
SIMM is properly located in the connector.
4. Pushing gently on the top corners rotate the SIMM
backwards until it clips into place. Do not use
excessive force.
If the SIMM will not rotate easily remove it and start
again.
5. If the SIMM is properly located the SIMM should
remain in position held by the securing clips, and
with a small plastic lug through the holes on either
side of the SIMM.
11
Processor upgrades
The FT//s Pentium motherboard is fitted with a Zero
Insertion Force (ZIF) processor socket, ready for higher
performance Pentium variants as they become available.
The FT//s Pentium motherboard is ready to accept any
processor with a Pentium compatible pinout, and a
maximum external clock speed of 60MHz.
Removing the processor
Before installing the upgrade processor you must first
remove the existing processor. The processor is at the
bottom front of the motherboard in front of the adapter
cards. Instructions on locating the socket and removing a
processor are given below.
1. Remove the side panel as described in Removing
the left side panel.
2. Note the position of all adapter cards and adapter
cabling.
3. Disconnect all adapter cables and remove the
adapters.
4. Identify the processor.
PROCESSOR
SOCKET
12
The processor is installed in a ZIF socket. A lever
attached to the socket clamps the processor
securely in the socket when it is parallel to the
motherboard.
5. Carefully rotate the lever from the secure position
until it is perpendicular to the motherboard
FREE
LOCKED
The first and last 15° of movement may require
considerable effort. Apply just enough pressure to
overcome the resistance offered by the lever.
6. Once the processor is free of its socket lift it out of
the system unit and place it on the anti-static foam
provided with the upgrade processor.
13
Installation
You are ready to install your new upgrade processor.
1. The upgrade processor and socket are keyed to
ensure that the processor can only be installed in
one orientation.
One corner of the socket has an extra hole inside
the others, the processor has a corresponding extra
pin. The processor has a small dot of paint on its top
surface to indicate the corner with the extra pin. If
the processor has a heatsink fitted the paint dot may
not be visible. Use the illustration below to help you
identify the keyed corner.
POSITIONING
GUIDE
KEYED
CORNER
2. Carefully position the upgrade processor above the
socket with the positioning guide on the processor
over the keyed corner of the socket and the
securing lever in the perpendicular position.
14
PROCESSOR
IN CENTRE
Warning
If the processor is misaligned it will not go into the
socket, and any attempt to force it will damage the
processor, or the socket, or both.
3. Gently insert the upgrade processor making sure
that it is correctly aligned with the socket and that
you do not bend or otherwise damage the pins.
4. Once you are certain that all the pins on the
processor are in the holes in the socket carefully
move the securing lever to the locked position.
The lever may require a considerable amount of
force in order to lock the processor in place. Take
care to exert no more force than is necessary.
5. You may now reassemble the system unit.
15
apricot
APRICOT COMPUTERS LIMITED
3500 PARKSIDE
BIRMINGHAM BUSINESS PARK
BIRMINGHAM B37 7YS.
MITSUBISHI ELECTRIC
Part No 15225231
Revision No 01
Download PDF