SPORTS ART C51R, Repair Manual

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C51R/C51U Bike Repair Manual (Electronics) - Troubleshooting
Test Procedure
1. Put on the Polar strap, making sure it makes good contact with your skin.
2. Turn on unit power. Sit on the bike seat within 2 1/2 feet from the display.
3. Press the QUICK START key, then press the MODE (1) key until the HR LED lights.
4. The display should show your heart rate within five seconds.
Troubleshooting
1. Inspect whether the Polar strap works on other equipment. If it does not operate on any equipment,
try another Polar strap. If it works on other equipment but not this unit, proceed to the following.
2. Inspect whether the wire from the Polar receiver board to the display is connected properly.
3. Replace the Polar receiver board. Re-insert the main program IC into its socket on the display board.
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