Symptom Probable Cause Corrective Action Recommended Tools
IRREGULAR OR
NO DISPLAY
600R, 600U
Control Panel
Control Board
Cables
AC Voltage Output
Generator Output
Cable
• Probe leads between pin 1 and 2 of 5PB.
(Page 19-20)
• Pedal unit up to at least 30 RPM.
• Is voltage 5 VDC?
• If not 5 VDC – replace Control Panel.
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• Disconnect 6PG from 6PH.
• Pedal.
• Check DC voltage between pins 2 and 3
for 5 VDC.
• No 5 VDC? – Replace Control Board.
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• Perform continuity checks on all upper
and lower cables.
• Replace defective cables
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• Check for AC Voltage between pins 1
and 2 of 3PB, and pins 2 and 3 of 3PB.
• Is there AC voltage output in both
places?
• If yes – replace Control Board.
• Check for AC Voltage between pins 1
and 2 of 3PD, and pins 2 and 3 of 3PD.
• Is there AC voltage output in both
places?
• If no – replace Generator.
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• Perform a continuity check on the
generator output cable.
• If no continuity – replace cable
Multi-meter
Support Services 800-883-8783 Mon-Fri 8:30am-5:00pm Central Time Zone Fax: 636-272-7148
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