Roland HP 2700 Service Notes page 19

Dec. 1990
SK-6 Rubber
Switch Sheet
Difference
Between
Natural
and Sharp
Contacts
-
—
Height
—
With rubber switch 12
PW218—
224
for
SK-6
keyboard,
natural-key
and sharp-key contacts
are
made
to different
dimensions. See the
figures below and note the height of
contacts.
When
replacing contacts, attach
the sheet in place,
i.e.
match characters with keys. Do
not cut the sheet at a
point other than V-cut with a groove.
NOTE
Replacement SK-6 keyboard and
replacement contact
PCS
are equipped with a
complete
set
of rubber
sheets.
Sheets
are also available as
separate replacement.
SK-effl^-Z-f
yf-v-KdiA)
SK-
h
yf-
l
2
PW2
1
8-224
S
K-6
V y
^ -
h
fztzL. x-f
NATURAL
KEY
SHARP KEY
HP-3700/2700
SK-6 KEY
REMOVAL
LEVER
A
lever as
shown
in Fig.
1
is
required
in
SK-6 key
re-
moval.
Consult
your
local
Roland
service center for availa-
bility.
If
not available,
make
a lever following the in-
structions described below.
SK-6
Fig. 1
U
SUBSTITUTIVE LEVER
1.
Prepare
a
length of wire (more than
95mm
or 3.8
in.).
A
paper
clip
is
a
most
typical one.
2. (If
a coiled wire as
example
of a paper
clip.)
Uncoil
and
straigten the wire.
3.
Reshape the wire
to Fig. 2,
with the dimensions
exactly matching the values given
in the figure.
4.
Prepare
a
separate key (may be
a replacement to
be
used, natural or black.).
5.
Grasp
key
and
key holder
at
©
In Fig.
3 with
thumb
and forefinger to allow the holder goes
to
the bottom. Retain tension on holder
at this
point.
And
insert
the key removal
lever Into key
to
hook
the latch lock.
©
In Fig.
3.
6.
Release key holder.
When
the holder remains
locked,
@,
the lever you
made now
passes the
acceptance
test,
and ready
to
work on
the
keyboard.
1
.
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^5 o
-
^
(c?
I
Fig. 3 7
^
^m^j:hOKX-to
Fig.
2
DIMENSIONS
IN
FULL SCALE
llTj-
19