Hypertherm MAX200 Service Manual - Manual (Page 70)

MAX200 Service Manual 3-29
1-97
MAINTENANCE
14. No torch DOWN (machine-
torch systems with THC
option) 14.1. Torch lifter motor defective.
Replace torch lifter motor, if necessary.
14.2. Machine interface connections incorrect and/or external
AC or DC source not functioning or interfaced incorrectly.
See Figure 3-10 in Setup section of instruction manual
#800980 for detail and specifications for machine
interface.
14.3. THC board not being activated.
Check to see if D5 on PCB9 illuminates after the STATUS
indicators all extinguish. See Figure 3-15 for location of
D5. If D5 is not illuminated, then PCB9 may not be getting
120VAC from Power Distribution Board PCB6. Check pins,
connectors and associated wiring from REC5 of PCB9 to
REC2 of PCB6.
Repair and/or replace defective component(s), if
necessary.
14.4. CR3 relay on PCB9 defective.
See if D4 illuminates during cut sequence. If D4
illuminates and there is no torch motion down and wiring to
machine is O.K., replace CR3.
14.5. Problem with the volt division circuit.
See Voltage Divider Test Procedure later in this section.
14.6. THC PCB10 defective.
See if D4 illuminates during cut sequence. If D4 does not
illuminate, and voltage division and CR3 are O.K., replace
PCB10.
Problem Possible Causes and Solutions