Control Unit - Mitsubishi Electric MELDAS C6 Maintenance Manual

4. DAILY MAINTENANCE AND PERIODIC INSPECTION AND MAINTENANCE

4.3.3 Control Unit

(1) Control unit
Always turn the machine power OFF before replacing the control unit.
(1) Disconnect all cables connected to the control unit.
(2) Remove all cards mounted in the control unit's extension slots.
(3) Loosen screw A. (There is no need to remove the screw.)
(4) While supporting the control unit with a hand, remove screw B.
(5) Lift up and remove the control unit.
(6) Replace with a new control unit, and fix the control unit with the fixing screws.
(7) Mount the cards into the extension slots.
(8) Correctly connect all cables that were connected.
(Connect the cables to the designated connectors.)
CAUTION
Incorrect connections could cause device damage, so always connect the cables to the
designated connectors.
Do not replace the control unit while the power is ON.
Do not connect or disconnect the cables connected between each unit while the power
is ON.
4.3 Replacement Methods
Screw A
Lift up
II - 29
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Screw B