Hitachi RAC-25RPA - Precautions for Servicing

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WARNING
[ Main P.W.B.]
Remove four screws securing the main
P.W.B. to the cooling fins, and remove the
main P.W.B. from the cooling fins.
12
PRECAUTIONS FOR SERVICING
Be sure that the power switch is turned off or the power cable is disconnected before servicing.
When replacing any P.W.B., disconnect all the cables (including ground wires).
Removing the P.W.B.s.
Fig. A
Open these support latches to
remove the P.W.B.
Screw
Cooling fins
Earth screw
Remove the earth screw from the
electrical box.
Lead wire
Remove screws fastening the lead wires
which are connected to the terminal board,
and remove the lead wires from the terminal
board.
Terminal board
3
4
Open these support latches to remove
the main P.W.B.
in the direction of the arrow as shown
in Fig A.
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