Addendum B — Phase 1.5/1.5.3 and New Main PCB
B–11
Addendum B
B.8
Comms PCB – Link LK7
The jumper fitted to link LK7 must always be set in position 2–3, as shown in
Figure 22.3. If you are installing a new machine with a comms PCB fitted or are
fitting a new comms PCB, the jumper may be set in position 1–2 which is
incorrect. This must be changed to position 2–3 before fitting the comms PCB
in the machine or switching the machine on.
11
LK1
1
ÍÍÍÍ
ÍÍÍÍ
BAT1
SW2
PL5
PL1
SW1
SW3
LK1
LK6
LK7
D17
TP14
TP13
TP15
TP1
TP3
TP16
TP4
TP2
Link LK7
Link LK6
27C020 (256k x 8)
EPROM
27C401 (512k x 8)
EPROM
11
Links are in the
2–3 position
LK1
1
Figure B.1
Comms PCB – Link, LK7
Summary of Contents for CX20 SERIES
Page 258: ...PL 1 CX20 CX30 CX34 Service Manual Section PL Parts List ...
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Page 317: ...Addendum A Phase 1 4 and CX34 Parts List A 30 CX20 CX30 CX34 Addendum A ...
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Page 323: ...Contents B 2 Addendum B ...
Page 343: ...Addendum B Phase 1 5 1 5 3 and New Main PCB B 22 Addendum B ...
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Page 347: ......
Page 351: ...PL Parts List Devlin Keyboard C 6 Addendum C ...
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