15 — CX30 TK Machine
15–6
CX20/CX30/CX34 Service Manual
Figure 15.2
Keyboard Controller PCB – Links
LK2: for
connecting
FRAME GND
to 0Vd
Not selected
(IC6 disabled)
Selected
(IC6 active)
TB2
B
A
TB1
SCREEN
GN
BU
BK
OR
YL
WH
RD
PL1
LK2
PL4
PL3
PL2
B
A
A
B
LK1
LK3
LK4
A
B
LK1
LK4
A
B
A
B
LK3
A
B
LK1
Jumper connected
in position B
LK4
A
B
A
B
LK3
A
B
LK3
Single keyboard (column or
remote) – 64 large keys only
Two keyboards (column and
remote) – 64 large keys only
on both keyboards
Single keyboard (column or
remote) – 128 keys maximum
in any combination
LK4: can be in
either position.
Power reset circuits
LK4: must be in
opposite position
(position B) on PCB
on other keyboard
LK4: has no effect with LK3 in
position B
LK3: must be in
same position (posi-
tion A) on PCB on
other keyboard.
Содержание CX20 SERIES
Страница 133: ...11 Main PCB 11 4 CX20 CX30 CX34 Service Manual Figure 11 1 Main PCB Electrical Connections See Tables 11 1 and 11 2 ...
Страница 137: ...11 Main PCB 11 8 CX20 CX30 CX34 Service Manual Figure 11 2 Main PCB DIL Switches and Potentiometers ...
Страница 246: ...25 Appendices 25 9 CX20 CX30 CX34 Service Manual 1 Voids printed on receipt 2 Voids not printed on receipt ...
Страница 258: ...PL 1 CX20 CX30 CX34 Service Manual Section PL Parts List ...
Страница 284: ......
Страница 287: ......
Страница 317: ...Addendum A Phase 1 4 and CX34 Parts List A 30 CX20 CX30 CX34 Addendum A ...
Страница 318: ......
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Страница 323: ...Contents B 2 Addendum B ...
Страница 343: ...Addendum B Phase 1 5 1 5 3 and New Main PCB B 22 Addendum B ...
Страница 344: ......
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Страница 351: ...PL Parts List Devlin Keyboard C 6 Addendum C ...
Страница 352: ......