Hypertherm HT2000-200 Volt - Manual (Page 155)

MAINTENANCE
8-10 HySpeed HT2000
Instruction Manual
19
Troubleshooting
The troubleshooting section is presented by following normal operational sequence.
Before troubleshooting for specific problems, be sure that unit passes
Initial Checks
as outlined earlier in this
section.
WARNING
SHOCK HAZARD: Always use caution when servicing a power supply when the covers are
removed. Dangerous voltages exist within the power supply which could cause injury or death. If
questions or problems arise during servicing, call the Hypertherm Technical Services Department
at 1-800-643-9878.
1. The green POWER ON pushbutton
switch PB1 is pressed, but the fans
are not operating and the green
POWER ON indicator does not
illuminate.
1.1. The green POWER ON (1) PB1 pushbutton is defective.
Check that switch is operating correctly, and that good
contact is being made. The POWER ON switch is normally
open.
1.2. The red POWER OFF (0) PB2 pushbutton is defective.
Check that switch is operating correctly, and that good
contact is being made. The POWER OFF switch is normally
closed.
1.3. Associated wiring not making good contact.
Check wiring and repair or replace, if necessary.
2. The green POWER ON pushbutton
switch PB1 is pressed, the POWER
ON indicator illuminates, but the
fans are not running.
2.1. CR2 on the power distribution board is defective.
Check that CR2 switches when POWER ON pushbutton is
pressed. See Figure 8-2 for location of CR2. If CR2 is
defective, replace PCB1.
2.2. Connector from power distribution board is not seated
securely.
Check pins, connectors and associated wiring for good
continuity. Repair or replace, if necessary.
Problem Possible Causes
/ Solutions