A Inspection And Maintenance - Omron C1000H Installation Manual

Certain consumable items in a PC (such as fuses, relays, or batteries) need occasional replacement. This Appen-
dix explains how to replace each of these items. Refer to Appendix B Specifications for the specifications of indi-
vidual consumable items. Always keep spare items on hand so that they can be used as immediate replacements.
CPU and Power Supply Fuses
To replace a fuse in the CPU or Power Supply, follow the steps below.
1. Turn OFF the power to the PC.
2. Remove the fuse holder by turning it approximately 50° counterclockwise with a standard screwdriver.
3. Remove the fuse from the holder.
4. Insert a new fuse.
5. Reattach the fuse holder by turning it approximately 50° clockwise with a standard screwdriver.
Output Unit Fuses
To replace a fuse in an Output Unit, follow the steps below.
1. Turn OFF the power to the PC.
2. Detach the terminal block from the Output Unit, by removing the screws located at the top and bottom of the
terminal block.
3. Remove the screws that mount the Output Unit to the Backplane. Pulling the Unit toward you, remove the Out-
put Unit from the Backplane.
4. There are eight screws on each side of the Output Unit. Remove these screws to detach the case from the
cover.
Appendix A
Inspection and Maintenance
Turn counterclockwise
to remove, clockwise to
attach
Standard screwdriver
Mounting screws
Located at the top and bottom.
Terminal block mounting screws
Located at the top and bottom of
the terminal block.
Cover mounting screws (8)
63