Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 787)

Section 15B
Replacement Procedures
15B-31
To replace the operator panel power supply on a monochrome operator
panel:
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. Disconnect the cable running from the main power supply to the
operator panel power supply.
3. Disconnect the cable running from the operator panel power supply to
the keyboard I/O ring interface.
4. Remove the keyboard I/O ring interface.
5. Disconnect the cables running from the operator panel power supply
to the MTB panel and the HPG’s.
6. Loosen the 4 mounting screws on the operator panel power supply.
7. Slide the operator panel power supply out of the mount and replace it
with a new operator panel power supply.
8. Tighten the 4 mounting screws on the operator panel power supply
then reconnect all cables.
To replace the operator panel power supply on a color operator panel:
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. Disconnect the cable running from the main power supply to the
operator panel power supply.
3. Disconnect the cable running from the color CRT internal power
supply to the operator panel power supply.
15B.16
Replacing the Power Supply
for Monochrome Operator
Panel
15B.17
Replacing the Power Supply
for the Color Operator Panel