Keyboard Assy - Roland RS-1000 Service Notes

RiD-IOOO
JUL. 1986
KEYBOARD ASSY
PA-388B
(7616320000)
NOTES:
EFFSN
671000
Change on keyswitch contact combination. Also see
"CHANGE INFORMATION"
on page
5.
Old Type New Type
PCB
assy part
number
as
well
as
PCB
code remain un-
changed:
PCBcode 40p 22915922
48p
22915942
Associated Change
PROM A
(CPU-A Board IC24)
from
Ver.
1
.4
to Ver. 2.1
.
Replacement Switches
As
a
replacement for old and
new
type switch contacts,
a
matrix board of
new
type switches
only
is
available.
Replacement
of individual
switch
is
not recommended.
Changing to
new
type switch contact needs exchanging
of
ROM A
with
that of Ver. 2.1 or higher.
CAUTION
When
ordering,
state
the
serial
number
of a given unit to
allow the factory judge whether
revised
ROM A
to be
shipped together with
new keyboard
matrix boards.
>i
.
6 7
1
0 0 0
J; !9
^
ij
^
)
CDT
-tr
y
7"
PCB::3-
PCB3-K
40P
229 15922
4 8
P
22915942
ROM A (CPU-A
MIC24)
iy
B
y
1.
A
i)^
2.1
^
5M®
y.'i y
^
^
'i
ROM
A^^'^'—
3
y
2.1
1
22575221
NATURAL KEY A
16
22025306
SHIELD COVER
22575222 NATURAL KEY B
17
23165666 KEY MATRIX BOARD
See NOTES Left.
40P
22575223
NATURAL KEY
C
23165667 48P
22575224 NATURAL KEY D
22575225
NATURAL KEY
E 18
22185321 BACK RAIL
22575226 NATURAL KEY F 19
22265353 CUSHION
22575227
NATURAL KEY
G
20 22265460 FELT STRIP
22575228 NATURAL KEY
A'
21
22165533 SPACER
22575229
NATURAL KEY
C' 22
22265199
BACK RAIL CLOTH STRIP
2
22575230 SHARP KEY 23
22145312 TENSION ROD
3
22265405
FELT STRIP
24
22145402
KEY LOCK LEVER
22265406 FELT STRIP 25
22185401 BALANCE RAIL
4
22125206
GROUNDING LUG
26
22125165 LEVER BASE PLATE
5
22185325 KEY STOP RAIL 27 22195492
HOLDER
6
22145197 BALANCE PIN 28
22265401 FRONT PUNCHING
7
22175155
SPRING 29
22265410 FRONT CUSHION
8
22265407
CLOTH STRIP A
30
BASE BOARD
22265409
CLOTH STRIP
C
31 22145310
FRONT PIN
22265458 CLOTH STRIP D
22265459
CLOTH STRIP
E
9
22135524 LOCK GUIDE
10 22145825
LOCK BAR
11
22135531 PANEL GUIDE
12 CUSHION, H72
13
22815545 SWITCH CHASSIS
14
22175129 SPRING
15 22135532
SWITCH BASE GUIDE
4