Hypertherm Powermax30 XP Service Manual - Manual (Page 76)

76 Powermax30 XP Service Manual 808150 Revision 1
5 – Troubleshooting and System Tests
Test 2 – power board voltage checks
1. Set the power switch to OFF (O), disconnect the power cord from the power source, and disconnect the gas supply.
2. Remove the power supply handle and cover. (See Remove the power supply cover on page 88.)
3. Remove the component barrier. (See Remove the component barrier on page 90.)
4. Reconnect the electrical power and set the power switch to ON (I).
5. Use a multimeter to verify the voltages at the J7 pins listed in the following table to verify the power board is
functioning correctly.
Figure 16
 To test the values at pin 16, you must position the torch and power supply so that you can
safely pull and release the torch trigger. For ground locations, see
Figure 11 on page 71.
If any of the values are incorrect, replace the power board. (See Remove the power board
on page 109.)
WARNING!
ELECTRIC SHOCK CAN KILL
Use extreme caution when working near live electrical circuits. Dangerous
voltages exist inside the power supply that can cause serious injury or death.
See the WARNING! on page 58 before proceeding.