Troubleshooting
Testing Elevation Potentiometer
48
7. Check for fractured housing or broken motor mounts. Replace if necessary.
6.6.
Testing Elevation Potentiometer
1. Remove the elevation pot from elevation motor but do not disconnect the brown, orange and blue wires.
2. Using a digital voltmeter set to ohms (
Ω
), place probes on the potentiometer prongs with the (orange) and
(brown) wires.
• Turn pot shaft completely clockwise: 0-1000
Ω
• Turn pot shaft completely counterclockwise: 1000-0
Ω
Note:
Now place meter probes on prongs (orange) and (blue) wires.
• Turn shaft of the potentiometer completely clockwise: 1000-0
Ω
• Turn pot shaft completely counterclockwise: 0-1000
Ω
Note:
If the elevation potentiometer does not indicate the proper resistance readings, it is must be replaced.
Note:
Potentiometer should fit snugly into motor. Check for tight fit. Also check that nut on potentiometer is tight.
6.7.
Testing Motor Control Board
This procedure verifies both the PWM motor control board and the SCR Motor Control PCB, any differences in the
step is noted. Reference the appropriate wiring diagram for pin-out information:
• SCR motor control PCB: “Interconnect Wiring Diagram - LTD and Home Models, ESI PWM Control PCB” on
• PWM motor control PCB: “Interconnect Wiring Diagram - Club Model” on page
1. Plug the treadmill in and turn it on.
2. Remove the motor cover.
3. Measure AC voltage into the motor control PCB across AC voltage terminals.
• 110V Treadmills: 120 VAC
• 220V Treadmills: 220 VAC
If the voltage is correct then proceed to the next step. Otherwise correct the AC power input problem.
4. Place the treadmill in Diagnostic mode.
5. Increase speed up to maximum: 90VDC for 110V Treadmills, 180VDC for 220V Treadmills.
6. Confirm that 90VDC (for 110V treadmills) or 180VDC (for 220V treadmills) is available across MTR+ and MTR-.
If the reading is as specified, the motor control PCB is working properly and troubleshooting is complete. Other
-
wise, proceed.
WARNING
This test requires that power be applied to the circuitry. Use caution to avoid electrical
shock and shorting board contacts.
Содержание L7 Club
Страница 1: ...L7 L8 L9 Treadmill 90 Series Service Manual...
Страница 4: ...Grounding Instructions 4...
Страница 16: ...Introduction Recommended Tools 16...
Страница 26: ...Electrical Reference Harnesses 26...
Страница 30: ...Routine Maintenance Maintenance Checklist 30...
Страница 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...
Страница 116: ...Replacement Parts 116...
Страница 119: ......
Страница 120: ...111 Canfield Avenue Suite A 1 Randolph NJ 07869 1 800 LANDICE Tel 973 927 9010 Fax 973 927 0630 www landice com...