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TEST PROCEDURE
1. Remove input power to the PRO-CUT 25
machine.
2. Remove carrying handle using a 4mm
allen wrench.
3. Using a crescent wrench, carefully
remove the plastic nut from around the
pressure regulator located on the top of
the machine.
4. Using a 7mm nut driver, remove the case
wraparound.
5. Perform the Capacitor Discharge
Procedure detailed earlier in this
section.
6. Visually check for burned or damaged
components on the input board. If any
components are physically damaged or
determined to be faulty (except the fuse)
the input board should be replaced.
7. Check fuse F1 (1 amp). Replace if
defective.
8. Apply 115VAC input to the PRO-CUT 25
machine. The test should be performed
with 115VAC applied. Not 230VAC.
Note: If the peak input voltage is above
400VAC the thermal light may activate.
Reduce the input voltage.
9. Turn on the machine and carefully check
for 115VAC (+/- 10%) at points A and B.
See Figure F.6. See the Wiring
Diagram.
Note: Within 4 seconds of the machine
being turned on, the two relays RL2 and
RL3 should activate. If they don’t, the
input board is faulty.
TROUBLESHOOTING & REPAIR
F-18 F-18
PRO-CUT 25
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INPUT BOARD VOLTAGE TEST (CONTINUED)
A
B
RL2
RL3
F1
AC
AC
CP
V1
V2
PLUG CN1
1 2 3 4 5 6 7 8
TEST POINTS
Figure F.6 Input Board Description