Hypertherm Powermax65 Service Manual Rev.1 - Manual (Page 166)

TroubleshooTing and sysTem TesTs
5-40
powermax
65/85 Service Manual
Test 2 – DC Power Buss
Resistance check
Note: All resistance values must be taken with the power cord disconnected and all internal power supply wires
attached.
• Remove the mounting screws from the bulk capacitors and pull the caps away from the power board.
• Measure resistances described in the following tables.
CSA
Test points Value
TP 10 and 12 25 kΩ
TP 11 and 12 25 kΩ
CE
Test points Value
TP 11 and 13 18 kΩ
TP 12 and 13 18 kΩ
WORK
LEAD
BLK
BLK
J13
J16 J17 J18 J19
J26
TP12
J28
TP10
TP11
WORK
LEAD
J13
J2 J1
J18 J19
J27
J30
J23
J24
TP13
J29
TP11
TP12
• Replace the bulk capacitor mounting screws before power-up.