Corrective action
1. Remove the power from the cutting system.
2. Tighten loose CAN cable connections between the plasma power supply, the cooler, and the gas
connect console.
3. Tighten loose connections on the control PCB chassis in the gas connect console.
4. Make sure that the D16 (+5 VDC) LED and the D18 (+3.3 VDC) LED are illuminated on the control
PCB.
D16 and D18 show that there is power to the PCB. Refer to Gas connect console control PCB
(141375) diagram on page 387.
5. Make sure that the D30 LED and the D31 LED on the control PCB are flashing one time per second.
A flashing LED shows that the mircoprocessor on the PCB is functional.
6. If the D24 LED and the D25 LED on the control PCB are flickering and you have diagnostic codes
600 and 602, do the following:
a. Make sure that the CAN cables between the plasma power supply and the cooler and between
the cooler and the gas connect console are connected.
b. Disconnect the CAN cable between the control PCB and the mixer in the OptiMix console.
c. With the cable disconnected, do D24 and D25 stop flickering?
If yes... • There is damage to the CAN cable. Use an ohm meter to make sure that there
is continuity at each connector. Measure each pin in the same order as the CAN
connectors. For example, in the image, pin 1 in connector A aligns with pin 1 in
connector B. If there is no continuity, replace the cable.
• There is a bad connection between the plasma power supply and the cooler or between
the cooler and the gas connect console. Reconnect the CAN cable, or replace it if
necessary.
• There is a bad connection between the small CAN jumper cable for the gas connect
console control PCB and the sheet metal panel in the gas connect console. Reconnect
the CAN cable, or replace it if necessary.
If no... Continue with the next step.
Diagnostics and Troubleshooting
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811530 Instruction Manual XPR460
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