Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 785)

Section 15B
Replacement Procedures
15B-29
To replace the monochrome CRT fuse:
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. Remove the cover that covers the rear of the monochrome operator
panel.
3. Remove the fuse from its holder and replace it with a recommended
replacement fuse. Refer to Figure 15B.7 for the location of the
monochrome CRT fuse.
ATTENTION: Use only replacement fuses of the type and
rating specified for the monochrome CRT. Improper fuse
selection may result in equipment damage.
Figure 15B.7
Location of Monochrome CRT Fuse
Front
Rear
Operator
Panel
3A
4. After replacing the fuse, replace the rear cover of the monochrome
operator panel, then turn power ON.
15B.14
Replacing the Fuse in the
Monochrome CRT