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NO DISPLAY
600EA
Power Issues
Control Panel
Power Supply
Cables
• Set meter to AC voltage and test wall
outlet to 120 VAC.
• Turn power switch on
• Does power switch lamp come on?
• Yes – go to control panel.
• No- remove rear cover.
• Check voltage input to switch, is it 120
VAC? If yes – replace switch. If no –
continue on.
• Check voltage at end of power cord.
• No voltage? Replace cord.
• Check fuse in power inlet.
• Replace fuse or replace power inlet and
wires.
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• Check connection to the display.
• Reseat connection.
• Set meter to DC volts, unplug display
and check voltage between pin 1and pin
2.
• If 12VDC is present – replace control
panel.
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• Check voltage between pin 2and pin 3at
the power supply.
• If 12 VDC present – replace power
supply.
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• Perform a continuity check on the cables
leading to the control panel.
• Replaced damaged cables.
Multi-meter
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