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OM-217 Page 22
5-2. Overload Protection: Fuses
Y Turn Off power and discon-
nect input power before
checking fuses.
Remove left side panel.
1 Main Fuse F1
F1 protects control transformer T2
from overload. If F1 opens, the
power source shuts down.
2 Timer/Control Board PC1
3 PC1 Fuse F1
4 PC1 Fuse F2
5 PC1 Fuse F4
6 Isolator/Filter Board PC5
7 PC5 Fuse F1
Fuses on PC1 and PC5 protect the
circuit boards from overload. If any
fuse opens, Ready light goes off,
and the unit does not cut.
Replace fuses as needed. See
Parts List for fuse ratings. Use
proper tool when removing fuses.
Reinstall side panel.
Tools Needed:
Ref. ST-159 466-C / Ref. ST-135 352-A / Ref. SB-137 070-D / SA-141 468-C
3/8 in
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