Mitsubishi Electric M80 Series Maintenance Manual page 192

M800/M80/E80 Series Maintenance Manual
6 Replacing Each Unit
Replacement procedures (M800S/M80/E80)
Always replace the operation panel I/O unit with the control unit (machine) power turned OFF.
(1) Check that the machine power is turned OFF. (If the power is not OFF, turn it OFF.)
(2) Open the operation panel door.
(3) Disconnect all the cables connected to the operation panel I/O unit.
(4) Remove the screws fixing the operation panel I/O unit, and take the unit off.
(5) Install a new operation panel I/O unit with fixing screws. (Fix so that the NCKB connector slot is placed at the bottom for
the horizontally arranged keyboard and at the right for the vertically arranged keyboard.)
(6) Connect all the cables back to the operation panel I/O unit. (Always connect the cables to the designated connectors.)
Insert NCKB cable by fitting Δ1st pin position with the connector.
(7) Confirm that all the cables are correctly connected and close the operation panel door.
CAUTION
1. Incorrect connections could cause devices to damage. Connect the cables to designated connectors.
2. Do not replace the operation panel I/O unit while the power is ON.
3. Do not connect or disconnect the cables between units while the power is ON.
FCU8-DX731/FCU8-DX750/FCU8-DX760/FCU8-DX761 (M800S/M80/E80)
Mounting screw size: M3
NCKB
165 IB-1501273-F