True Fitness 750EA, 600EA Resistance Malfunction, Enter DA resistance test mode. Page SG-1

Symptom Probable Cause Corrective Action Recommended Tools

RESISTANCE

MALFUNCTION

600EA

Console Set

Lower Board / Brake

Cable

Brake Coil

Console Cable

•Remove console bolts to access 7-pin connector. Do not disconnect console set. Set meter for DC Volts. Measure between pin 1(red) and pin 5(blue) at 7- pin connector.

•Enter DA (resistance) test mode. Page SG-1.

•Press + key to force .9 VDC out of panel.

•Press + to check voltage at all levels. Is voltage displayed on meter approximately the same as voltage displayed in heart rate window? No- replace console set. Yes, continue on.

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•Remove main body cover & locate the cable connecting the brake and the lower control board. Set meter to DC volts.

•Check DC voltage between pins 2 and 4 of the power supply

•Is voltage is same as shown in heart rate window?

•If NO – go to console cable.

•Check voltage at the 2-pin connector at the brake. Press + to increase resistance and voltage.

•Does the voltage start at 3.7 and increase to 30 VDC? If no- check continuity of cable. If cable is broken replace it, if cable is good – replace the lower board.

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•Set meter to resistance and check the coil. Coil resistance should be 15 ohms, + or – 2 Ohms. If not then replace the coil.

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•Set meter to resistance; perform continuity check on wire harness.

•Check for cross continuity.

•Broken wires? Replace cable.

Note:

You must pedal at least 30 RPM when performing any voltage test. You may require the assistance of another person when performing voltage checks.

Multi-meter

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