Troubleshooting Heart Rate Issues; Hand Held Heart Rate Does Not Work - Precor TRM10/GEN06 Service Manual

Troubleshooting Heart Rate Issues

Hand Held Heart Rate Does Not Work

1 Place your hands on the HHHR (Hand Held Heart Rate) contacts, making
full contact with both top and bottom contacts for at least 15
seconds.

If the unit displays a heart rate, no problem exists.

If the unit does not display a heart rate value within this time,
Continue to step 2.
2 Set the on/off switch to the off position, wait 10 seconds, then set
the on/off switch to the on position and repeat step 1.

If the HHHR functions correctly, then the processor on the HR
board was in a "latched-up" condition, and cycling the power
cleared the condition.

If the HHHR does not function correctly, continue with step 3.
3 Verify that the HHHR board has the correct operating voltage.
Connect a voltmeter to VCC and Ground on the Power/Signal connector.
The voltage should read between 4.5 and 5.5VDC.
4 Verify the wiring of the HHHR contacts (top left, bottom left, top
right, bottom right) go to the proper pin on the Grip/Contact
connector, that none of the lines are shorted,

If NO, Correct the wiring error.

If Yes, Continue.
5 Verify that the grip connections are free of corrosion.

If NO, Replace the corroded HHHR grips.

If Yes, Continue.
6 Verify that there is a ferrite bead around the cable from the HHHR
board to the upper PCA. (GEN-06 treadmill only)
7 Verify that the unit does not display a heart rate with only one
hand on a grip. This would indicate static damage, and require
replacement of the heart rate board.
8 If the above procedures do not correct the problem, replace the
heart rate board.
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