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Symptom Probable Cause Corrective Action Recommended Tools
No Display
750U, 750R
Console Set
Brake
Defective Cable
Console Cable/
Lower Control
Board
• Remove console set bolts. Verify good
connection at the back of the console
set. Set meter for DC volts
• Pedal.
• Measure between #1 and #4 wires (Page
21) for 5.5 – 7.5 VDC.
• Is required voltage present?
• If yes- replace console set. If not,
continue on.
--------
• Remove pedal and if 3 piece crank
remove crank arm.
• Remove right side cover.
• Disconnect 3- wire connector at brake.
• Set meter for AC volts.
• Pedal.
• The voltage should increase as pedaling
increases.
• Is minimum voltage 9 VAC @ 30
RPM?
• If No- replace Brake. If yes, continue
on.
--------
• Remove pedal and if 3 piece crank
remove crank arm.
• Remove right side cover.
• Disconnect 3- wire cable from brake and
lower control board.
• Set meter for continuity.
• Check all 3 wires in cable for continuity.
• No continuity? Replace cable
----------
• Set meter for DC volts. Reconnect
cable to brake and lower control board.
• Pedal.
• Measure for 5.5 – 7.5 VDC between #1
and #4 wires on 7- pin cable for the
console at the lower control board.
• Voltage is present? Replace cable for
console.
• Voltage not present? Replace lower
control board.
Note:
You must pedal at least
30 RPM when
p
erforming any voltage
test. You may require the
assistance of another
p
erson when performing
volta
g
e checks.
Multi-meter
Support Services 800-883-8783 Mon-Fri 8:30am-5:00pm Central Time Zone Fax: 636-272-7148
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