
Do System Tests to Identify Defective Components
5
Powermax65/85/105 SYNC
Troubleshooting Guide
810430
83
Test 2 – DC power bus
If you get the
3-43-0
fault code, use this test to do a check of the internal capacitors.
Measure the voltage
1.
Set the power switch on the plasma power supply to OFF (
O
), and disconnect the power cord.
2.
Wait for approximately 10 minutes for internal voltages to be fully released.
3.
Remove the plasma power supply cover and the component barrier.
4.
Connect the power cord to the power source, and set the power switch on the plasma power
supply to ON (
I
).
NOTICE
Do not use a multimeter with test leads for this test. This can cause a short circuit between the bus and
the heatsink. Use miniature banana plugs instead, and attach them to the test point (TP) openings in
the power PCB.
WARNING
ELECTRIC SHOCK CAN KILL
The plasma power supply contains dangerous electric voltages that can seriously injure or
kill you.
Use extreme caution if you do service or maintenance work on a plasma power supply
when it is connected to an electric power source and the outer cover or panels are
removed.
WARNING
ELECTRIC SHOCK CAN KILL
Wait for internal voltages to be fully released before you touch the bulk
capacitors.
The bulk capacitors can be charged for up to 10 minutes after the plasma
power supply is set to OFF (
O
).
Summary of Contents for Powermax105
Page 1: ...Powermax65 85 105 SYNC Troubleshooting Guide 810430 REVISION 0 ENGLISH ...
Page 12: ...Before You Begin 1 12 810430 Troubleshooting Guide Powermax65 85 105 SYNC ...
Page 174: ...System Diagrams 8 174 810430 Troubleshooting Guide Powermax65 85 105 SYNC ...
Page 180: ...System Diagrams 8 180 810430 Troubleshooting Guide Powermax65 85 105 SYNC ...