No handheld HR reading - No chest strap HR reading
l
Verify that neither the chest strap signal nor the handheld signal is being accepted
with either a heart rate test transmitter or a chest strap transmitter.
l
If neither a chest strap signal or a handheld signal is being accepted, replace the con-
sole
Constant or intermittent HR readings when neither the handheld or chest
strap is in use
l
Replace the console
See Also
"System Troubleshooting Procedures" on page 102
LIft System Troubleshooting
Information to hellp troubleshoot and repair Lift System issues.
Lift System Description:
The lift system on these units consists of an
AC
1
line voltage driven lift motor (120 VDC),
and an internal 1 KΩ potentiometer for lift position identification. The lift motor contains two
motor windings, one to operate the motor in an “upward” direction and the other to operate
the motor in a “downward” direction. As the lift motor is operated, the motor also rotates the
potentiometer via an internal gear system. Therefore, the position of the lift system can be
determined by monitoring the value of the internal potentiometer. The lift motor is initially set
at a known starting position and then subsequent motor movement is tracked via the poten-
tiometer resistance reading.
Note
: All resistance measurements must be performed with power removed from
the treadmill and the load disconnected from the circuit. Performing resistance
measurements with voltage applied and connected to the circuit it will give erro-
neous readings and may damage your ohmmeter.
1
Alternating Current: electric current which periodically reverses direction between positive
and negative polarity.
Contact Precor Customer Support at [email protected] or 800.786.8404 with
any questions.
Page 106
7 Troubleshooting
System Troubleshooting Procedures
