3 — Disassembly and Assembly
3–11
CX20/CX30/CX34 Service Manual
Figure 3.3
External Connector Plate (CX20 W) – View from above
BLUE
BROWN
Ferrite ring
External connector
plate
Fuse holder
Mains connector/filter
REAR OF UNIT
Mains On/Off switch
ISC connector
Host/Master
connector
Transducer
interface connector
BROWN
Earth connections
EARTH BRAID (TO CHASSIS
PRIMARY EARTH)
BLUE (TO CONNECTOR: PLUGS
INTO SK1 ON POWER SUPPLY PCB)
GREEN (TO KEYBOARD LOOM CONNECTOR:
PLUGS INTO PL4 ON MAIN PCB)
GREEN WITH YELLOW STRIPE (TO EARTH
STUD ON KEYSWITCH/DCU PLATE)
EARTH BRAID (TO COVER, BEHIND
KEYBOARD)
BROWN (TO CONNECTOR: PLUGS
INTO SK1 ON POWER SUPPLY PCB)
BOTH GREEN (WHEN FITTED, THEY
ARE CONNECTED TO POWER INPUT
LOOM: PLUGS INTO PL8 ON MAIN PCB
– REFER TO SERVICE INFORMATION
CIRCULAR 358)
EARTH (TO CHASSIS
PRIMARY EARTH)
GREEN
RED
YELLOW
BLUE
TO RS232 INTERFACE
PCB (TERMINAL TB2)
EARTH BRAID (TO CHASSIS PRIMARY
EARTH)
EARTH LEAD (TO REAR DISPLAY
BLANKING PLATE)
Summary of Contents for CX20 SERIES
Page 258: ...PL 1 CX20 CX30 CX34 Service Manual Section PL Parts List ...
Page 284: ......
Page 287: ......
Page 317: ...Addendum A Phase 1 4 and CX34 Parts List A 30 CX20 CX30 CX34 Addendum A ...
Page 318: ......
Page 321: ......
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 ...
Page 344: ......
Page 347: ......
Page 351: ...PL Parts List Devlin Keyboard C 6 Addendum C ...
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