Heart Rate Monitor Troubleshooting
Hand Held Heart Rate Does Not Work
1. Place your hands on the
HHHR
1
(Hand Held Heart Rate) contacts, making full contact
with both top and bottom contacts for at least 15 seconds.
a. If the unit displays a heart rate, no problem exists.
b. If the unit does not display a heart rate value within this time, continue with next
step.
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.
a. If the HHHR functions correctly, then the processor on the
HR
2
board was in a
"latched-up" condition, and cycling the power cleared the condition.
b. 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 Vdc.
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,
a. If NO, Correct the wiring error.
b. If YES, Continue.
5. Verify that the grip connections are free of corrosion.
a. If NO, replace the corroded HHHR grips.
b. If YES, continue.
6. Verify that there is a ferrite bead around the cable from the HHHR board to the upper
PCA
3
. (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.
1
Hand Held Heart Rate
2
Heart Rate
3
Printed circuit assembly, generally referred to as either an upper PCA or lower PCA.
Contact Precor Customer Support at [email protected] or 800.786.8404 with
any questions.
Page 112
7 Troubleshooting
System Troubleshooting Procedures
