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Do System Tests to Identify Defective Components
5
Powermax65/85/105 SYNC
Troubleshooting Guide
810430
87
Measure the resistance
To get all resistance values, make sure that the power cord is disconnected from the power source
and all internal power supply wires are securely attached.
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 2 bulk capacitors, as
follows:
a.
From the power PCB side,
remove the 4 bulk capacitor
mounting screws.
b.
From the fan side, remove the
2 bulk capacitors by pulling
them straight out of the
plasma power supply.
Remove the fan shroud from
the fan if necessary.
4.
Measure the resistance between the test points (
TP
n
)
on the power PCB as shown in
and
on page 89. Use miniature banana plugs
(for example, Pamona
®
2945 plugs) to connect to the
test points.
If miniature banana plugs are not available, use
small test clips that you can attach to the copper
contacts in the test point openings on the power
PCB.
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 ...