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12 MAINTENANCE & TROUBLESHOOTING
12-4
12.5 Replacement of Fuses
To protect the FS-1570 from overcurrent and equipment fault, two fuses are provided in
the PR-300 Power Supply Unit. If a fuse blows, find the cause before replacing it. If it
blows again after replacement, request service.
Use the proper fuse.
Use of the wrong fuse can cause serious
damage to the equipment and void the
warranty.
CAUTION
CAUTION
Unit Fuse
Power Supply Unit PR-300 10 A (100 VAC) or 5A (200 VAC)
and 20 A (24 VDC)
ON
OFF
100V 10A
220V 5A
ON
OFF
125V 20A
AC IN DC IN DC OUT
PR-300
LNG +- +- +-24V
PR-300
FUSE
Note: The Power Supply Unit PR-850A, used with the FS-2570, does not have a fuse but
a circuit breaker. If the breaker has tripped, find the reason before resetting the
breaker (upward position).
POWER
ON
ON
OFF
AC INPUT 50/60Hz DC OUTPUT
BREAKER
PR-850A