Hypertherm POWERMAX 800 - MAINTENANCE; Troubleshooting Flow

3-21
MAINTENANCE
Service Manual
9-96
LINE VOLTAGE
LED
Off?
To
page 3-22
From
page 3-20
Yes
Check for low input
voltage at TB1
Is line voltage for:
200V < 170V?
208V < 178V?
230V < 195V?
240V < 204V?
400V < 340V?
480V < 408V?
600V < 510V?
Correct supply voltage Yes
Check to see if D27 is
illuminated
No
D27
illuminated?
Replace control board
No
Check control board JP2:
24VAC at pins 1 & 2;
27VAC at pins 6 & 7
Voltages
correct?
Replace control board
Meter
indicates
0 ohms ?
Unplug power cord.
Measure resistances of
fuses F1 & F2
Replace F1
and/or F2.
Check connectors
& wires between
fuses and T1.
Repair as needed.
NoYes
Yes
No
Yes
No
Yes