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Precor 9.17 Appendix

Precor 9.17 Appendix

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9.17, 917si Treadmill
9.17, 9.17si Treadmill
Warning: This service manual is for use by Precor trained service providers only.
If you are not a Precor Trained Servicer, you must not attempt to service any Precor Product;
Call your dealer for service.
This document contains information required to perform the majority of troubleshooting, and
replacement procedures required to repair and maintain this product.
This document contains general product information, software diagnostic procedures (when
available), preventative maintenance procedures, inspection and adjustment procedures,
troubleshooting procedures, replacement procedures and electrical block and wiring diagrams.
To move directly to a procedure, click the appropriate procedure in the bookmark section to the
left of this page. You may "drag" the separator bar between this page and the bookmark section
to change the size of the page being viewed.
© 2003 Precor Incorporated
.
Unauthorized Reproduction and Distribution Prohibited By Law
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  • Page 1 9.17, 9.17si Treadmill Warning: This service manual is for use by Precor trained service providers only. If you are not a Precor Trained Servicer, you must not attempt to service any Precor Product; Call your dealer for service. This document contains information required to perform the majority of troubleshooting, and replacement procedures required to repair and maintain this product.

  • Page 2: Section One - Things You Should Know

    Section Seven, Wiring and Block Diagrams. This section includes wiring and block diagrams for 917 and 917si Treadmill. General Information For the latest exploded view, part number and part pricing information, visit the Precor dealer website at “www.precor.com/Dealer”. Page 2...

  • Page 3: Technical Specifications

    9.17, 917si Treadmill Technical Specifications PHYSICAL SPECIFICATIONS Length: 60 inches (152 cm) Width: 28 inches (71 cm) Height: 48 inches (122 cm) Running surface: 18 X 54 inches (46 X 137 cm) Motor: 2.0 hp continuous duty Speed: 1.0 to 10 mph (1.6 to 16 kph)

  • Page 4: Procedure 2.1 - Accessing The Diagnostic Program (917Si Only)

    917, 917si Treadmillr Procedure 2.1 - Accessing the Diagnostic Program (917si only) The keys on the display are hypothetically numbered for 1 to 7 from left to right. Therefore, INCLINE would be key 1, INCLINE would be key 2, etc. Placing the unit in the diagnostic mode causes the software to perform the following operations: Test the LED’s mounted on the upper PCA;...
  • Page 5 9.17, 917si Treadmill 10. A series of dots will appear on the display. Press each of the keys on the keyboard, the appropriate dot will expand to indicate that the key is functioning. Press and hold the STOP key to continue.

  • Page 6: Procedure 2.2 - Displaying The Odometer (917Si Only)

    917, 917si Treadmillr Procedure 2.2 - Displaying the Odometer (917si only) The keys on the display are hypothetically numbered for 1 to 7 from left to right. Therefore, INCLINE would be key 1, INCLINE would be key 2, etc. This procedure allows you to display the number of miles or kilometers logged on the treadmill. Procedure Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker Press keys RESET,6,5, sequentially.

  • Page 7: Procedure 2.3 - Selecting United States Standard Or Metric Units (917Si Only)

    9.17, 917si Treadmill Procedure 2.3 - Selecting United States Standard or Metric Units (917si only) The keys on the display are hypothetically numbered for 1 to 7 from left to right. Therefore, INCLINE would be key 1, INCLINE would be key 2, etc.

  • Page 8: Procedure 2.4 - Documenting Software Problems

    When a problem is found with either the PROM or upper or lower PCA’s, record the information listed below. If you isolated the problem to either the PROM, upper PCA, or lower PCA, include the information with the malfunctioning PROM or PCA when you ship it to Precor Customer Service.
  • Page 9 9.17, 917si Treadmill Section Three - Checking Treadmill Operation This section provides you with a quick method of checking treadmill operation. Check treadmill operation at the end of a maintenance procedure and when it is necessary to ensure that the treadmill is operating properly.

  • Page 10: Procedure 4.1 - Calibrating The Lift (917 Only)

    917, 917si Treadmillr Procedure 4.1 - Calibrating the Lift (917 only) WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood. Procedure Remove the top front and bottom front covers. Lay the treadmill on it’s side and the unsnap lift platform wheel axle from the lift platform. Remove the wheels and axle from the lift motor tube.
  • Page 11 9.17, 917si Treadmill Remove the P7 lift motor connector from the lower PCA. Thread the lift tube counter- clockwise far enough so that you can comfortably grasp the lift motor drive screw. Set the digital multimeter for ohms and leave it connected as in step 4. Turn the lift motor drive screw, by hand, until the meter reads 98 ±...

  • Page 12: Procedure 4.2 - Calibrating The Lift (917Si Only)

    917, 917si Treadmillr Procedure 4.2 - Calibrating the Lift (917si only) WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood. Procedure Lay the treadmill on it’s side and unsnap the lift platform wheel axle from the lift platform. Remove the wheels and axle from the lift motor tube.

  • Page 13: Procedure 4.3 - Running Belt Tensioning And Tracking

    9.17, 917si Treadmill Procedure 4.3 - Running Belt Tensioning and Tracking WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood. The basic running belt tensioning and tracking procedure described in the Residential Treadmill service manual (part # 20081-101) may be used to tension and track the 917 or 917si treadmill with a few exceptions.

  • Page 14: Procedure 4.4 - Drive Belt Tensioning

    Place a belt gauge (Precor part # 20030-117 or equivalent) in the middle of the drive belt and in the center of the belt span (see Diagram 5.3). Lay a straight edge along the length of the belt and beside the belt gauge.
  • Page 15 9.17, 917si Treadmill IF... THEN... The belt tensioning gauge reads Turn the drive belt tension bolt clockwise, until the belt tensioning less than 14 pounds gauge reads 14-16 pounds @1/2” deflection. The belt tensioning gauge reads Turn the drive belt tension bolt...

  • Page 16: Procedure 5.1 - Troubleshooting Keypad Function (917 Only)

    917, 917si Treadmillr Procedure 5.1 - Troubleshooting Keypad Function (917 only) If the function keys on the electronic console are unresponsive, the problem may be either the upper PCA or keypad. This troubleshooting procedure gives you the information you need to determine which of these components is malfunctioning.
  • Page 17 9.17, 917si Treadmill Use a DVM, set for DC volts, and read between pin 6 of J2 and the each of the pins in Table 5.1 (no keys pressed) and Table 5.2 (with the appropriate key pressed)... Table 5.1. Voltage Test Points (Function Keys Not Pressed)

  • Page 18: Procedure 5.2 - Troubleshooting Keypad Function (917Si Only)

    917, 917si Treadmillr Procedure 5.2 - Troubleshooting Keypad Function (917si only) If the function keys on the electronic console are unresponsive, the problem may be either the upper PCA or keypad. This troubleshooting procedure gives you the information you need to determine which of these components is malfunctioning.
  • Page 19 9.17, 917si Treadmill Set the circuit breaker in the “on” position. Use a DVM, set for DC volts, and read between pin 6 of J3 and the each of the pins in Table 5.1 (no keys pressed) and Table 5.2 (with the appropriate key pressed)...

  • Page 20: Procedure 5.3 - Troubleshooting The Lift System

    If you have performed all of the above tests and the lift system is still not functioning, call Precor Technical Support. Set the treadmill circuit breaker in the “off” position. Remove the F2 (2 amp slow blow) fuse from the lower PCA.
  • Page 21 9.17, 917si Treadmill Remove the P7 connector from the lower board. Using an ohmmeter, measure between terminals 1 and 3 of P7, between terminals 1 and 2 of P7 and between terminals 2 and 3 of P7. The measurements should be approximately 49.5Ω, 47.5Ω and 97Ω, respectively. If any of the measurements are significantly low or high, replace the lift motor.

  • Page 22: Procedure 5.4 - Troubleshooting The Speed Sensor

    917, 917si Treadmillr Procedure 5.4 - Troubleshooting the Speed Sensor Remove the top front and bottom front covers. Plug the line cord into an AC outlet and set the circuit breaker in the “on” position. Use a digital voltmeter, set for DC volts, to measure the voltage between terminal 1 (green) and terminal 2 (white) of the J1 connector on the lower PCA.
  • Page 23 9.17, 917si Treadmill If the voltage in step 4 is incorrect and the voltage in step 6 is correct, either the speed sensor or the lower PCA could be defective. Substitute a known good speed sensor and see if that corrects the problem. If not, substitute a known good lower PCA.

  • Page 24: Procedure 5.5 - Troubleshooting The External A.c. Power Source

    Procedure 5.5 - Troubleshooting the External A.C. Power Source It is extremely important that any Precor treadmill be connected to and operated on a dedicated 20 amp A.C. circuit. A 20 amp dedicated circuit is defined as: a circuit fed by a 20 amp circuit breaker that feeds a single load.
  • Page 25 9.17, 917si Treadmill The circuit breaker correctly feeds a single A.C. outlet but the neutral is common between several A.C. outlets. The common neutral lead must be removed from treadmill’s A.C. outlet and a new neutral lead from the treadmill’s A.C. outlet to the A.C. neutral distribution bar must be added.

  • Page 26: Procedure 6.1 - Replacing The Running Bed

    917, 917si Treadmillr Procedure 6.1 - Replacing the Running Bed Set the circuit breaker in the “off” position and remove the line cord from the AC outlet. Remove the four screws that retain the hood. Remove the hood by pulling the from the sides and back slightly.
  • Page 27 9.17, 917si Treadmill 10. Center the running belt on the running bed, be sure that the running belt is centered between the belt trackers. Using two running belt tension gauges, tension the running belt to 0.3% 11. Snap the trim strips onto the side rails and slide them back under the end caps. The Timmerman clips (hood mounting clips) must be fully visible with at least a 1/4”...

  • Page 28: Procedure 6.2 - Replacing The Running Belt Or Running Belt And Running Bed

    917, 917si Treadmillr Procedure 6.2 - Replacing the Running Belt or Running Belt and Running Bed Set the circuit breaker in the “off” position and remove the line cord from the AC outlet. Remove the four screws that retain the hood. Remove the hood by pulling the from the sides and back slightly.
  • Page 29 9.17, 917si Treadmill Lift the running belt and running bed straight up out of the treadmill frame. Set the replacement running belt and running bed in place in the treadmill frame. 10. Set the drive roller in place, be sure that drive belt is around the drive roller. Replace the two drive roller mounting bolts.

  • Page 30: Procedure 6.3 - Replacing The Speed Sensor

    It is highly recommended that a left side cover (Precor part number 38088-101) is available before performing this procedure. Set the circuit breaker in the “off” position and unplug the line cord from the AC outlet.
  • Page 31 9.17, 917si Treadmill Disconnect the speed sensor connector (J1) from the lower PCA. Remove the speed sensor. Set the replacement speed sensor in it’s mounting position, replace and tighten the speed sensor mounting screws. Remove the paper or similar material that is covering the drive motor holes.

  • Page 32: Procedure 6.4 - Replacing The Lift Platform

    917, 917si Treadmillr Procedure 6.4 - Replacing the Lift Platform Set the circuit breaker in the “off” position and remove the AC line cord from the AC outlet. Lay the treadmill on it’s side. The lift platform snaps onto the frame and the lift platform axle. Diagram 6.4 - Lift Platform Lift Platform Wheel...

  • Page 33: Procedure 6.5 - Replacing The Lift Motor

    9.17, 917si Treadmill Procedure 6.5 - Replacing the Lift Motor Set the circuit breaker in the “off” position and remove the AC line cord from the AC outlet. Remove the lower front cover. Lay the treadmill on it’s side. Remove the shield from the lower PCA.
  • Page 34 917, 917si Treadmillr Set the replacement lift motor in it’s mounting position and secure it to the treadmill frame with the clevis pin removed in step 6. Replace the hitch pin in the clevis pin. Feed the lift motor cable to the lower PCA, and insert the lift motor connector into the lower PCA.

  • Page 35: Procedure 6.6 - Replacing The Drive Motor/Flywheel

    9.17, 917si Treadmill Procedure 6.6 - Replacing the Drive Motor/Flywheel The flywheel on the 917 and 917si treadmills is balanced on the drive motor. Do do not remove or reposition the flywheel on the drive motor. Set the circuit breaker in the “off” position and remove the AC line cord from the AC outlet.
  • Page 36 917, 917si Treadmillr Remove the four bolts that retain the drive motor assembly. Remove the entire drive motor assembly by lifting it out and upward. 10. Remove the three screws from the bottom of the motor bracket the retain the lower PCA to the motor bracket.

  • Page 37: Procedure 6.7 - Replacing The Drive Motor Brushes

    9.17, 917si Treadmill Procedure 6.7 - Replacing the Drive Motor Brushes Remove the drive motor per Procedure 6.6 steps, 1-10. Remove both of the motor brush access covers. Press downward on one of the brush retainers until the hook disengages the bottom edge of the brush holder.
  • Page 38 917, 917si Treadmillr Replace both motor brush access covers. Re-install the drive motor per Procedure 6.6, steps 11-17 Page 38...

  • Page 39: Procedure 6.8 - Replacing The Drive Belt

    9.17, 917si Treadmill Procedure 6.8 - Replacing the Drive Belt Set the on/off switch in the “off” position. Remove the line cord from the AC outlet. Remove the upper front cover (hood). Remove the shield from the lower PCA. Disconnect the interconnect cable from the lower PCA. Remove the six bolts that fasten the targa to the treadmill frame and remove the targa.

  • Page 40: Procedure 6.9 - Replacing The Prom

    917, 917si Treadmillr Procedure 6.9 - Replacing the PROM Anti-static kits (part number 20024-101) can be ordered from Precor. The PROM and the associated printed circuit assembly (PCA) are static sensitive. Anti- static devices must be used and all anti-static precautions must be followed during this procedure.
  • Page 41 9.17, 917si Treadmill Wiring Diagram 7.1 - 917 and 917si (120 Vac) Page 41...
  • Page 42 917, 917si Treadmillr Block Diagram 7.2 - 917 and 917si (120 Vac) Page 42...
  • Page 43 9.17, 917si Treadmill Wiring Diagram 7.3 - 917 and 917si (240 Vac) Line Line Circuit Filter Cord Breaker Page 43...
  • Page 44 917, 917si Treadmillr Block Diagram 7.4 - 917 and 917si (240 Vac) Page 44...

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