Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 779)

Section 15B
Replacement Procedures
15B-23
ATTENTION: Make sure that all cables are properly attached
to the correct terminals. Failure to do so may result in injury to
personnel, or damage to the control or machine.
6. Turn ON power to the control.
To replace main power supply:
1. Turn OFF all power to the control.
ATTENTION: To guard against electrical shock hazards, never
make connections or disconnections at the ac distribution
network unless the main ac disconnect switch is open and
locked.
2. If you have a 9/230 Digital remove the four screws hold the front
cover to the enclosure as shown. If you have a 9/230 Analog skip this
step and go on to the next step.
Remove these screws to take off the front cover.
Remove these screws to take off the front cover.
15B.8
Replacing the Main Power
Supply on the 9/230