Troubleshooting
Testing Upper Display Board
50
Figure 6-3.
Optical Speed Sensor
5. Verify that the toothed wheel is secured to the motor shaft and that the teeth run between the emitter/detector
posts. One side has the LED emitter and the other the light detector. The teeth must break the beam to create
the pulse train. Adjust as required.
6. If the sensor is properly adjusted plug the treadmill in and turn it on.
7. Verify that power is available to the emitter/detector:
a. Disconnect the cable to the emitter/detector assembly.
b. Check for +5VDC at the red and black wires of the cable’s connector
c. Check for +5VDC between the white and black wires of the connector.
• If power is available, replace the speed sensor.
• If power is not available, replace the cable.
6.9.
Testing Upper Display Board
The upper display board is powered by DC voltage. The power is supplied by the PCB through the Upper Wire
Harness and then connected to the upper display board. By measuring the Black and Green wires on the Upper
Wire Harness you can confirm voltage from the PCB. Confirm the upper display is g12DC volts delivered to
it. If the display board has the proper DC voltage supplied and does not light, see "Testing Membrane Panel".
6.10. Testing Membrane Panel
The membrane panel has small micro switches laminated inside that transmit the user's key presses into treadmill
functions. Enter
Diagnostic Mode
to confirm proper operation of the membrane panel. In this test mode you will be
able to check each key on the membrane panel. By pressing a key, a numeric code appears, see Table 6-5 for a
complete list of these codes. If you see the appropriate code appear, then the key has failed and the membrane
panel must be replaced.
Note:
The Pro Trainer and Executive Trainer control displays the text of the button pressed and so is not included in the
following table.
WARNING
The next step requires that power be applied to the circuitry. Appropriate caution must
be used to avoid shock and shorting board contacts.
Toothed Wheel
Emitter/Detector
Summary of Contents for L7 Club
Page 1: ...L7 L8 L9 Treadmill 90 Series Service Manual...
Page 4: ...Grounding Instructions 4...
Page 16: ...Introduction Recommended Tools 16...
Page 26: ...Electrical Reference Harnesses 26...
Page 30: ...Routine Maintenance Maintenance Checklist 30...
Page 102: ...Replacement Parts 102 Figure 8 8 Control Panel 17 16 15 13 14 12 11 11 9 5 3 7 6 2 4 8 1...
Page 116: ...Replacement Parts 116...
Page 119: ......