Precor GEN06 Series C952 Service Manual page 94

Wireless Heart Rate Does Not Work
1. Verify wireless heart rate with a known good chest strap transmitter or test transmitter.
If the heart rate reading is erratic, incorrect, or absent, continue.
NOTE: It may be necessary to lean in closer to the console at first to allow receiver to
begin to acquire a heart rate signal.
2. 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 5.5 Vdc.
3. Identify other sources of wireless interference signals in close proximity to the unit (such
as Wi-Fi networks, cordless phones, etc.).
NOTE: Wi-Fi network is transmitting in close proximity to the treadmill the heart rate
system MAY pick it up. Using an ohmmeter, verify that upper and lower PCAs have a
good electrical path to chassis ground.
4. If the preceding procedures do not correct the problem, replace the heart rate board.
5. Possible sources of interference signals include, but not limited to:
Wi-Fi Network Routers
l
Cordless Telephones
l
Cell Phones
l
Electronic Dog Fences
l
Garage Door Remotes
l
Noisy AC feeds
l
Florescent light ballasts
l
See Also
"System Troubleshooting Procedures" on page 74
(Undefined variable: TRM700-16Base.ServiceManualTitle)
6 Troubleshooting
88