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Model
8672A
Service
Disassembly and Reassembly Procedures
(Cont'd)
listed
below:
a.
Remove
the Pozidriv screw at the rear
of
the protective
cover.
b.
Lift
up the rear portion
of the protective
cover and slide towards the rear
of
the Synthesizer
to allow the
front
edge pins
to
disengage
from the
guide
slots.
8-46. Bottom
Cover Removal.
To
remove the
bot¬
tom cover from
the Synthesizer,
follow the
steps
as
listed below:
a.
Place
the
Synthesizer
upside
down.
b.
Remove
the
two
plastic
feet from
the rear
of
the bottom cover by removing the Pozidriv
screw
from
each
foot
(see
Figure
8-2).
c.
Unscrew the Pozidriv screw at the middle
of the
rear edge
of
the
bottom
cover
(see
Figure
8-2).
This
is
a
captive
screw and
will
cause
the
front
edge
of
the
bottom
cover
to pull away from
the
front
frame. Captive screw part number
is
HP
0570-1171;
clip
part
number
is
HP
0510-0043.
d.
Lift
the bottom
cover
off
the Synthesizer.
8-47. Front
Panel
Removal.
To
remove either the
Al
or
A2
Assembly Front Panel, follow the
steps
as
listed
below:
a.
Place
the
Synthesizer
upside
down.
b.
Remove the
plastic
foot on the A2
Assem¬
bly
side
of
the instrument.
c.
Remove the two
Pozidriv
screws
from
the
bottom
edge
of
the
front
frame over
the front
panel.
d.
Place the Synthesizer
with top
side
up.
e.
Remove the top
plastic
trim
strip
from
the front frame.
f.
Remove the
two
Pozidriv
screws
from the
top
edge
of
the
front
frame
over
the
front
panel.
g.
Carefully, pull the front panel outward to
clear
the front
frame
(see
Figure
8-3).
h.
Disconnect the cables and the wiring
as
necessary
to free the front panel.
i.
Remove the two Pozidriv
screws
from
the
hinge and remove
the front panel.
8-48.
Fan Removal and Replacement.
To remove
the fan
from
the Synthesizer, follow the
steps
listed on page
8-9.
WARNING
The fan and fan
relay always have
120
Vac
across
the terminals
if
the
instru¬
ment
is
connected to the Mains
(line)
voltage. BE
SURE
the instrument
is dis¬
connected before removing the fan.
Figure
8-2.
Rear Panel
of the Synthesizer
8-7
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