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KEY REPLACEMENT PROCEDURE
Removing
the following
parts
allow
access
to
the
keys.
First
open
the
top
panel
by removing
screws
®
(8 pcs)
and
^
(2 pcs.)
^
J:
CK®
(
2
^
^
ii-f
T
)
b
FRONT
Back
Rail
Lock
Bar
Key
Stop
Rail
1.
Key
Stop
Rail
1-
1.
Remove
screws
^
(8
pcs)
and grounding
lugs
^
(4
pcs).
2.
Key Lock
Levers
2-
1.
Before removing, repeatedly
lock
and unlock
a
lever
to sense the degrees of
mechanical
reaction force of
the
lever.
Recall
this
friction
when
reassembling the
levers
later.
2-2.
While holding
a
lever
with one hand,
remove
nut
©
and
washer;
pull
down
the
lever
through
the key-
board
together with the Tension
Rod.
Similarly,
remove
the other
lever.
1
.
4r
-
h
y
7°
b
-
f'x©(
8;©)
y
-
f'®
(
2.4P-P
y
7
U/'i-
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j;^'7
-7
RD-1000
JUL. 1986
4.
Matrix Boards
4-1.
Remove
screws
®
(5
pcs)
that securing
Switch
Cover and swing
it
up
to
vertical
position for
dis-
engage,
then
remove
it.
4-2.
Completely
loosen screws
Q{5
pcs).
4-3.
Remove
screws
@
(5
pcs);
lift
up
Switch
Chassis
(R)
and
rest
it
against
the
back
of
Back
Rail
©
.
Now
the keys
are
ready
for
removal.
Reassembling Keyboard
Although
the
reverse steps of
the
above procedure seems
effective to
reassembly, there
are
some
cautions to be
observed
for satisfactory
keyboard performance:
follow
the
instruction
below.
1.
Matrix Boards
1-1.
Place
and
loosely
install
Switch
Chassis
®
with
screws Q)
.
1-2.
Align
all
key
switch
leave
with
corresponding
Actuator
@
;
tighten
Q)
.
1-
3.
Drive screws
®
few
turns
—
to be
fine
adjusted
later.
2.
Lock
Bar
2-
1
.
Secure
Lock
Bar
on
both ends with
screws
©
and
washers.
2-2.
Recap
cushions
©
.
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^
t"x® (5;^)
o
XT
(±0
)
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t"x®(
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^
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7
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7
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^
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6
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