Epson RC420 Manual page 144

Maintenance 8. DMB (Drive Main Board)
(14) Disconnect the flat cables (X104, X114) that connect to DMB.
(15) Remove six mounting screws securing the DMB to the Controller.
(16) Remove the old DMB.
(17) Install the new DMB and mount it with six mounting screws in the inside and two
(18) Re-install the Motor Drivers for axis #1 and axis #3 just to position the DMB
(19) Tighten the eight mounting screws that are still loose from step (17).
(20) Connect the (X104, X114) cables that were disconnected in step (14).
(21) If the Regeneration module was removed in step (11), re-install it by referring to steps
(22) Fasten the mounting screws to secure the Motor Drivers.
(23) Mount the Top Cover to the Controller.
(24) Turn over the Controller.
(25) Connect the cables to the backside of the DMB.
(26) Mount the Bottom Cover to the Controller.
(27) Turn over the Controller again.
(28) Connect the cables to the back of the Controller.
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screws at the back loose enough so that it can still be moved around a little for
positioning.
(6) and (7) described in the section Maintenance 9.2 Replacing a Regeneration
Module.
RC420 Rev.9