Replacement; Replacing Switching Power Supply Module 1 - Epson RC420 Manual

Maintenance 5. Switching Power Supply Module

5.3 Replacement

5.3.1 Replacing Switching Power Supply Module 1:

■ Before performing any maintenance procedure, always make sure that the main
power of the Controller is turned OFF and that the high voltage charged area is
completely discharged.
Performing any maintenance procedure while the main power is ON or the high
WARNING
voltage charged area isn't discharged completely is extremely hazardous and
may result in electric shock and/or cause serious safety problems.
(1) Shut down Windows, and turn OFF the Controller.
(2) Disconnect all the cables from the back of the Controller.
(3) Turn OFF the UPS ON/OFF
(4) Wait for about 1 minute until the high voltage charged area is completely discharged.
(5) Remove the connector (X400) of the board for display from the front cover.
(6) Remove the battery connector.
(7) Remove six mounting screws, and remove the battery cover.
(8) Pull out the battery from the
(9) Remove six mounting screws, and remove the Bottom Cover.
(10) Remove the CN1 and CN2
(11) Remove the screws 1 and 2, and
122
switch.
Remove four mounting screws, and remove the front cover from the Controller.
Controller.
connectors.
remove the Switching Power Supply
module 1.
(6) Battery Connector
UPS ON/OFF switch
Battery
CN1
Screw 1
(7)
CN2
Screw 2
RC420 Rev.9