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CAPACITOR REMOVAL
1. Using the 3/8” wrench, remove the four
screws holding the heat sink to the center
panel assembly. Take note of the insulator
placement for reassembly. The four screws
have insulating washers on both sides of the
panel assembly. These must be properly
replaced upon reassembly.
2. Carefully push the heat sink in towards the
center of the machine. This is necessary to
gain clearance for capacitor(s) removall.
3. Carefully slide the capacitor(s) from the heat
sink assembly. Observe polarity markings
and terminal position.
CAPACITOR REPLACEMENT AND
P.C. BOARD REPLACEMENT
1. Carefully slide the new capacitor(s) into the
heat sink assembly.
2. Reassemble the heat sink assembly to the
center panel using the four screws and insu
lated washers previously removed. Note
insulation placement.
3. Position the capacitors to the P.C.Board for
assembly. Note the polarity of the
capacitors.
4. Apply a thin coating of Penetrox A-13
Electrical Joint Compound to the mating sur-
faces of the P.C. board and the heat sink and
capacitor terminals.
5. Mount the P.C. board to the heat sink and
capacitor assembly. Make sure the capacitor
terminals line up with the holes in the P.C.
board and with the correct capacitor polari-
ties.
6. Assemble the eight socket head screws and
pre-torque them to 25 inch-pounds.
7. Make certain the capacitors are lined up cor-
rectly so that when the capacitor bolts are
assembled through the P.C. board, there will
NOT be any distortion to the P.C. board.
8. Finish tightening the eight screws to 40-48
inch-pounds.
9. Assemble the two Phillips Head screws pre-
viously removed.
10. Connect the J10 plug.
11. Connect leads 201, 204, 205, 208 and 209
previously removed. Torque to 75 IN. LBS.
12. Connect leads 202A, 207A, 206, and 203A
to the capacitor terminals. Torque to 50-60
inch-pounds.
13. Clear and reposition any leads that may be
disturbed. Replace wire ties.
14. Replace the case wraparound cover.
TROUBLESHOOTING & REPAIR
F-53 F-53
PRO-CUT 80
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PRIMARY POWER BOARD AND FILTER CAPACITOR
REMOVAL AND REPLACEMENT (continued)