Service manual

5 The tray has two tabs which fit into the front slots of
the unit and four clips, two at each side, holding the
tray in place. Remove the tray from the main unit by
grasping both ends of the support metalwork. The
whole
assembly should lift and the end tags disengage from
the sides. See the diagram below.
6 Once you have removed the tray, you can remove the
floppy disc drive (item 77) and the hard disc drive (item
78) by turning the tray over and unscrewing the four
screws which hold each drive in place. Take care to
observe all anti-static precautions when storing the
disc drives.
Removing the speaker
Looking from the rear of the main unit, the speaker (item
36) is located on the right hand side of the unit.
1 Remove the rubber sealant (item 74) from each side of
the speaker.
2 Pull the speaker directly upwards and out of the main
unit.
Removing the front plastic
moulding
1 There are six spring plastic clips on the front moulding (
item 28), three each on the top and bottom, attaching
it to the main unit. Release these clips from the inside
of the main unit.
2 Remove the plastic moulding. Note that there are two
LEDs in the front moulding, with wires attached. Feed
these wires carefully through the plastic panel.
Removing the power supply unit
1 Remove the plastic push button from the on/off switch (
item 32) on the front of the unit.
2 Undo the two fixing screws on each side of the on/off
switch socket.
3 Remove the earth wire from the earth fixing point,
easing the wire away from the harness clip at the side
of the unit.
4 The power supply unit itself (item 12) is held in place by
two screws which fix it to the base metal work of the
unit. Remove these two fixing screws together with
their washers.
5 Remove the four fixing screws at the rear of the unit.
6 Lift the power supply unit upwards and out of the main
unit.
Part 2 - Disassembly and assembly Issue 1, November 1991 2-3