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Precor 9.55 Manual

Precor 9.55 Manual

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9.55 Treadmill
9.55 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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Summary of Contents for Precor 9.55

  • Page 1 9.55 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

    Things you Should Know About This Appendix The 9.55 has been manufactured in two versions. When servicing a 9.55 it is critical that you are aware of which version of version you are servicing. The differences in the versions may greatly impact service requirements and procedures.

  • Page 3: General Information

    9.55 Treadmill General Information For the latest exploded view diagram, part number and part pricing information, visit the Precor dealer website at “www.precor.com/Dealer”. Technical Specifications Physical Specifications Length: 84 inches (213 cm.) Width: Handrails 36.75 inches (93 cm.) Base 33.75 inches (86 cm.) Height: 55 inches (140 cm.)

  • Page 4: Procedure 2.1 - Accessing The Hardware Validation Program

    The display will momentarily read DISPLAY TEST and then illuminate every LED on the display. Check all LED positions to ensure that all of the LED’s are functioning. Press the ENTER key to continue. Diagram 2.1 - 9.55 Treadmill Display Key #7 Reset/Key #1...
  • Page 5 9.55 Treadmill The display will momentarily read KEYBOARD TEST. The keyboard test will place two dots on the display for each key on the display, including the numeric keypad. Pressing a key will cause the upper of the two dots associated with the key to go out.
  • Page 6 9.55 Treadmill 22. It is suggested that you perform this test on a treadmill known to be in excellent operating condition. Note the values displayed at a fixed speed (such as 3 MPH) and your body weight. Those values may then be used to benchmark the operation of treadmills you are diagnosing.

  • Page 7: Procedure 2.2 - Accessing The Information Display Program

    9.55 Treadmill Procedure 2.2 - Accessing the Information Display Program The information display will access the following data; • Odometer • Hour meter • Software version • Error log Procedure Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker.
  • Page 8 9.55 Treadmill 13. The error log will store up to 10 error conditions. The errors are logged with the most recent error in position one. When a new error condition occurs, each existing error is pushed down one position in log. If there was an error in position 10 when a new error was logged, the error that was in position 10 will be lost.

  • Page 9: Procedure 2.3 - Accessing The User Parameter Program

    9.55 Treadmill Procedure 2.3 - Accessing the User Parameter Program This procedure allows you to change the following settings: • Set Measurement Units • Enable/Disable Password • Set User Name Procedure Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker.

  • Page 10: Procedure 2.4 - Documenting Software Problems

    9.55 Treadmill Procedure 2.4 - Documenting Software Problems When a problem is found with the software in the upper or lower PCA, record the information listed below. When a problem occurs, record the following information: • Model and serial number •...
  • Page 11 9.55 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 12: Procedure 4.1 - Calibrating The Lift Motor

    9.55 Treadmill Procedure 4.1 - Calibrating the Lift Motor Set the treadmill circuit breaker in the “off” position and unplug the line cord from the wall outlet. Remove the hood. Place the treadmill on it’s right side. Remove hitch and clevis pins that secure the lift tube to the lift platform.
  • Page 13 9.55 Treadmill Plug the power cord into the wall outlet, set the treadmill circuit breaker in the “on” position. Press keys RESET, 5,1,7,6,5,7,6,1, sequentially to enter the diagnostics routine. Refer to Procedure 2.1 and advance to the lift test. When the lift calibration number is displayed on...

  • Page 14: Procedure 4.2 - Adjusting Drive Belt Tension

    9.55 Treadmill Procedure 4.2 - Adjusting Drive Belt Tension Set the treadmill circuit breaker in the “off” position and unplug the line cord from the wall outlet. Remove the hood. Place the drive belt tension gauge on the drive belt as shown in Diagram 4.2.
  • Page 15 9.55 Treadmill Diagram 4.3 - Drive Belt Adjustment Bolt Drive Motor Drive Belt Adj. Bolt Plug the line cord into the wall outlet and set the treadmill circuit breaker in the “on” position. Check treadmill operation per Section 3. Page 15...

  • Page 16: Procedure 5.1 - Troubleshooting The Keypad And Upper Pca

    9.55 Treadmill Procedure 5.1 - Troubleshooting the Keypad and Upper PCA If the function keys on the electronic console are unresponsive, the problem may be either the upper PCA or keypad. The keys on this unit are touch sensitive keys. It is necessary to use the keypad diagnostics to troubleshoot the key functions.
  • Page 17 The display housing front panel is equipped with the keypad. 10. If you have performed all of the procedures above and have been unable to correct the problem, call Precor customer service. 11. Access the diagnostics program per procedure 2.1. If the key(s) necessary to access the diagnostic program is not functioning, skip to step 14.

  • Page 18: Procedure 5.2 - Troubleshooting The Lift System

    9.55 Treadmill Procedure 5.2 - Troubleshooting the Lift System Lift System Description: The lift system on these units consists of an AC line voltage driven lift motor (120 Vac or 240 Vac), and an internal 1 KΩ potentiometer for lift position identification. The lift motor contains two motor windings, one to operate the motor in an “upward”...
  • Page 19 12. If you have performed all of the procedures above and have been unable to correct the problem, call Precor customer service. 13. Set the treadmill’s circuit breaker in the “off” position and remove the AC line cord from the AC outlet.
  • Page 20 15. If you have performed all of the procedures above and have been unable to correct the problem, call Precor customer service. 16. Set the treadmill’s circuit breaker in the “off” position and remove the AC line cord from the AC outlet.

  • Page 21: Procedure 5.3 - Troubleshooting The Speed Sensor

    9.55 Treadmill Procedure 5.3 - Troubleshooting the Speed Sensor Note: The speed sensor is a hall effect sensor that emits a pulse when a flywheel lobe passes between it’s transmitter and receiver. The speed control circuit processes the pulse train emitted by the speed sensor.
  • Page 22 Try substituting the lower logic PCA first then the upper PCA, if necessary. If you have performed all of the above procedures and have been unable to correct the problem, call Precor Customer Support. Page 1-22 Page 22...

  • Page 23: Procedure 5.4 - Troubleshooting The External A.c. Power Source

    Procedure 5.4 - 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 24 9.55 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 25: Procedure 6.1 - Replacing The Lift Motor

    9.55 Treadmill Procedure 6.1 - Replacing the Lift Motor Note: The replacement lift motor must be calibrated prior to installation. The lower PCA bracket assembly must be removed to gain access to the lift motor. The defective lift motor is then removed and the calibrated replacement lift motor is installed.

  • Page 26: Procedure 6.2 - Replacing The Lift Platform

    9.55 Treadmill Procedure 6.2 - Replacing the Lift Platform Set the treadmill circuit breaker in the “off” position. Remove the AC line cord from the AC outlet. Remove the treadmill hood. Carefully, lay the treadmill on it’s right side. Remove the hitch pin and clevis pin that fastens the lift motor tube to the lift platform. While the lift tube is not fastened to the lift platform, care must be taken to not allow the lift tube to rotate.

  • Page 27: Procedure 6.3 - Replacing The Lower Logic Pca

    July 2, 2001. To replace the lower PCA on a version 1 9.55 treadmills, order (1) 59036-101 9.55 lower PCA retrofit kit. The kit comes complete with all necessary parts and installation instructions. Page 27...

  • Page 28: Procedure 6.4 - Replacing The Lower Power Pca

    July 2, 2001. To replace the lower PCA on a version 1 9.55 treadmills, order (1) 59036-101 9.55 lower PCA retrofit kit. The kit comes complete with all necessary parts and installation instructions. Page 1-28...

  • Page 29: Procedure 6.5 - Replacing The Lower Pca (Version 2)

    9.55 Treadmill Procedure 6.5 - Replacing the Lower PCA (version 2) Set the treadmill circuit breaker in the “off” position. Remove the AC line cord from the AC outlet. Note the routing and tie down points of all of the wiring coming into the lower PCA. This information will be required after the replacement lower PCA has been installed.
  • Page 30 9.55 Treadmill If the treadmill being serviced operates on 120Vac, the 120Vac jumper must be removed from the defective lower power PCA and re-installed on the replacement lower power PCA between the M1 connector and the M6 connector. Caution If the treadmill being serviced operates on 240 Vac, the jumper in step 12 must not be installed.

  • Page 31: Procedure 6.6 - Replacing The Speed Sensor

    9.55 Treadmill Procedure 6.6 - Replacing the Speed Sensor Set the treadmill circuit breaker in the “off” position. Remove the AC line cord from the AC outlet. Disconnect the plug from the J2 connector on the lower logic PCA. Rotate the flywheel so that the speed sensor is between flywheel lobes.
  • Page 32 9.55 Treadmill 11. Set the treadmill circuit breaker in the “on” position and check treadmill operation per Procedure 3. Page 1-32 Page 32...

  • Page 33: Procedure 6.7 - Replacing Drive Motor

    9.55 Treadmill Procedure 6.7 - Replacing Drive Motor Set the treadmill circuit breaker in the “off” position and unplug the treadmill’s line cord from the AC outlet. Remove the hood. The drive motor and flywheel are balanced as a matched pair. Since the flywheel is balanced to a specific motor, flywheels should not be removed from one and installed on a different motor.
  • Page 34 9.55 Treadmill 15. Re-install the hood. 16. Check treadmill operation per Procedure 3. Page 1-34 Page 34...

  • Page 35: Procedure 6.8 - Replacing The Circuit Breaker

    9.55 Treadmill Procedure 6.8 - Replacing the Circuit Breaker Set the treadmill circuit breaker in the “off” position and unplug the treadmill’s line cord from the AC outlet. Remove the four screws that fasten the circuit breaker mounting plate to the treadmill. See Diagram 6.8.
  • Page 36 9.55 Treadmill Diagram 6.9 - Circuit Breaker Wiring Set the circuit breaker mounting panel in it’s mounting position. Fasten the circuit breaker mounting panel to the treadmill using the screws removed in step 2. Check treadmill operation per Section 3.

  • Page 37: Procedure 6.9 - Replacing The Line Filter

    9.55 Treadmill Procedure 6.9 - Replacing the Line Filter Set the treadmill circuit breaker in the “off” position and unplug the treadmill’s line cord from the AC outlet. Remove the four screws that fasten the circuit breaker mounting plate to the treadmill. See Diagram 6.8.

  • Page 38: Procedure 6.10 - Replacing The Line Cord

    9.55 Treadmill Procedure 6.10 - Replacing the Line Cord Set the treadmill circuit breaker in the “off” position and unplug the treadmill’s line cord from the AC outlet. Remove the four screws that fasten the circuit breaker mounting plate to the treadmill. See Diagram 6.8.

  • Page 39: Procedure 6.11 - Replacing The Drive Motor Cooling Fan

    9.55 Treadmill Procedure 6.11 - Replacing the Drive Motor Cooling Fan Set the treadmill circuit breaker in the “off” position and unplug the treadmill’s line cord from the AC outlet. Remove the hood. Remove the drive motor per Procedure 6.7, steps 2-8.

  • Page 40: Procedure 6.12 - Replacing The Drive Motor Brushes

    9.55 Treadmill Procedure 6.12 - Replacing the Drive Motor Brushes Set the treadmill circuit breaker in the “off” position and unplug the treadmill’s line cord from the AC outlet. Remove the hood. Remove the drive motor per Procedure 6.7, steps 2-6.
  • Page 41 9.55 Treadmill Repeat 3-8 with remaining drive motor brush. 10. Replace the drive motor per Procedure 6.7, steps 11-14. 11. Re-install the hood. 12. Check treadmill operation per Procedure 3. Page 41...

  • Page 42: Procedure 6.13 - Replacing The Prom

    9.55 Treadmill Procedure 6.13 - 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 43: Wiring Diagram 7.1 - 9.55 (Version 1)

    9.55 Treadmill Wiring Diagram 7.1 - 9.55 (version 1) Page 43...

  • Page 44: Block Diagram 7.2 - 9.55 120 Vac (Version 1)

    9.55 Treadmill Block Diagram 7.2 - 9.55 120 Vac (version 1) Note: Fan sense function removed on units manufactured sfter 9/29/2000 Page 1-44 Page 44...

  • Page 45: Block Diagram 7.3 - 9.55 240 Vac (Version1)

    9.55 Treadmill Block Diagram 7.3 - 9.55 240 Vac (version1) Note: Fan sense function removed on units manufactured sfter 9/29/2000 Page 45...

  • Page 46: Wiring Diagram 7.4 - 9.55 120 Vac (Version 2)

    9.55 Treadmill Wiring Diagram 7.4 - 9.55 120 Vac (version 2) Page 1-46 Page 46...

  • Page 47: Wiring Diagram 7.5 - 9.55 240 Vac (Version 2)

    9.55 Treadmill Wiring Diagram 7.5 - 9.55 240 Vac (version 2) Page 47...

  • Page 48: Block Diagram 7.6 - 9.55 120 Vac (Version 2)

    9.55 Treadmill Block Diagram 7.6 - 9.55 120 Vac (version 2) Page 1-48 Page 48...

  • Page 49: Block Diagram 7.7 - 9.55 240 Vac (Version 2)

    9.55 Treadmill Block Diagram 7.7 - 9.55 240 Vac (version 2) Page 49...

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