Service Manual, 9.31, 9.33, 9.35 (redhook).fm
Contents
1. 10109 5is q s polq bumu 14617 vodT SOUJON 0015 WA d 20 SE 6 20 6 6 20 1 6 aiqeyse 4 PIO 20 GE 6 AIUO Jaddn Aiowayy 459 wr vir Er ar VOd puo g 210 OJJ YEH HE H Page 562. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 9 31 9 33 9 35 Treadmill Press the OK or ENTER key to exit the U Boot SW display U BASE SW Press the OK or ENTER key The U Base SW part number will be displayed The U Base SW is the upper PCA operating system software Press the OK or ENTER key to exit the U Base SW display LOWER SW Press the OK or ENTER key The Lower SW part number will be displayed The Lower SW is the lower PCA operating system software Press the OK or ENTER key to exit the Lower SW display METRICS BOARD SW Press the OK or ENTER key The metrics board software part number will be displayed Press the OK or ENTER key to exit the metrics board SW display USAGE LOG Press the OK or ENTER key The usage for each program can be displayed The ARROW keys will allow to scroll through the list of programs For example the manual program usage will be displayed as MANUAL USED X TIMES TOTAL X MINUTES Press the OK or ENTER key to exit the usage log display ERROR LOG Press the OK or ENTER key 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 Each error in the log will show the odometer reading in
3. Tension Gauge 4 The gauge should read approximately 75 inch pounds The drive belt tension is acceptable if it is in the range of 60 to 90 inch pounds 5 If the drive belt tension is less than 60 or greater than 90 inch pounds slightly loosen the four drive motor mounting bolts The drive motor mounts on slotted holes allowing the drive motor to be move forward or rearward Move the drive motor forward or rearwards as required until the belt gauge reads approximately 75 inch pounds and tighten the four drive motor mounting bolts See Diagram 4 3 Momentarily remove the drive belt tension gauge from the drive belt Replace the drive belt tension gauge on the drive belt and re adjust the drive belt tension if necessary Torque the four drive motor mounting bolts to 180 inch pounds Page 14 9 31 9 33 9 35 Treadmill 6 Re install the motor cover Diagram 4 3 Drive Belt Adjustment Drive Motor Mounting Bolt 7 Plug the line cord into the wall outlet and set the treadmill circuit breaker in the on position 8 Check treadmill operation per Section 3 Page 15 9 31 9 33 9 35 Treadmill Procedure 4 3 Treadmill Belt Cleaning Procedure 1 First check for proper operation of the safety stop key Stand to one side of the treadmill Insure that the stop key tether is hanging straight down from the stop key and is not wrapped around the handle bars Push the Quick Start button and wait for the display to
4. be required 1 8 to 1 4 turn Increase the treadmill speed to 4 m p h if the belt drifts away from center touch up the tracking as described in step 13 If the belt drifts to the right slowly turn the left hand mounting bolt counter clockwise until the drifting stops If the belt drifts to the left slowly turn the right hand mounting bolt counter clockwise until the drifting stops Only a very small adjustment should be required 1 8 to 1 4 turn Increase the treadmill speed to 8 m p h if the belt drifts away from center track it as described in step 11 Increase the treadmill speed to maximum if the belt drifts away from center track it as described in step 13 Set the treadmill at a comfortable running speed and run on the treadmill for a couple of minutes and note the running belt tracking If required track it as described in step 11 If applicable replace the finger guard removed in step 4 Replace the end caps removed in step 3 Page 49 9 31 9 33 9 35 Treadmill Procedure 6 12 Running Belt and or Deck Replacement This procedure is to be used to replace the running belt and or deck while maintaining the drive belt s original tensioning and setting the running belt s tension and tracking Two running belt gauges Precor part number 20007 101 are required It is important that this procedure be followed to maintain correct drive belt and running belt tension Over tensioning the belt will lead to premature ru
5. below Page 16 9 31 9 33 9 35 Treadmill 5 Turn the power off Place your hands on the towel and push it up and down the length of the running deck several times to clean the deck 6 Remove the towel Safety Stop Key Tether It is recommended that this procedure be performed frequently to extend the life of the running belt and running deck Page 17 9 31 9 33 9 35 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 Procedure 1 Set the circuit breaker in the on position WARNING Before continuing with this procedure review the Warning and Caution statements listed in Section One of the Residential Treadmill Service Manual 2 Ifthe treadmill powers up and functions normally until a particular key s is pressed skip to step 8 3 If a Stuck Key message is immediately displayed when the treadmill is powered up continue with the next step 4 This condition may be caused by either the keypad or upper PCA Set the circuit breaker in the off position Remove the two screws that retain the reading rack and remove the reading rack Remove the eight screws that retain the display face two are under the reading rack See Diagram 5 1 Diagram 5 1 Display Console Rear View __ Reading Rack Mounting Screw Reading Rack Mounting Screw Display Face Mounting Scre
6. just before the problem occurred Problem related information such as how far into the program the problem occurred the work level being used when the problem occurred etc The frequency of occurrence Page 10 9 31 9 33 9 35 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 Procedure 1 2 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker Place the treadmill in Manual Mode Adjust the speed of the running belt to 2 3 m p h Operate the treadmill for at least 5 minutes a Concentrate on the feel of the running belt and the sound of the drive motor and rollers Be on the alert for unusual noises smells or vibrations b Enter the Hardware Validation Program and log the power bits under loaded and un loaded conditions Observe the LED s on the electronic console Make sure that each LED lights as the in formation corresponding to that LED is displayed on the electronic console Press the STOP key When the treadmill comes to a stop view the electronic console as the treadmill scans time speed distance and percent of lift Press the INCLINE A key while viewing the electronic console Confirm that the running bed inclines and the in
7. miles and the time hour meter and motor currentreading when the error occurred The errors are displayed as 1 ER20 XXXXX MI XXX HRS XX X AMPS The ARROW keys will allow you to scroll through the log When the QUICK START key is held for 2 seconds the message HOLD TO CLEAR ERRORS will be displayed If the QUICK START key is held for an additional 2 seconds the log will be cleared The message NO ERRORS will be displayed and all error are erased from the log Page 6 9 31 9 33 9 35 Treadmill 31 Press the RESET key to exit the information display 32 Note the error log can also be entered at any time by pressing and holding the RESET key for four seconds Page 7 9 31 9 33 9 85 Treadmill Procedure 2 3 Accessing the User Parameter Program This procedure allows you to change the following settings Select Units 9 31 9 33 Set Max Pause Time Set Cool Down Time Set Speed Limit Procedure 1 2 6 7 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker Refer to diagram 2 1 above and press keys RESET 5 6 7 1 sequentially Use the numeric keypad to enter the number sequence The ARROW keys will step you through the display modes listed above allowing you to skip displays or view only specific displays The display will momentarily display DIAGS SET PARAMETERS SELECT UNITS 9 31 9 33 The currently selected measurement unit will then be displayed Use the AR
8. of the deck has not been used flip the deck so that when it is replaced it will now be the top side Decks with inserts that are being flipped need to be reversed so that the bottom of the deck can be used the inserts can be removed by threading the deck screw into the insert from the top Using a hammer or mallet the insert can be tapped out the bottom of the deck Remove the insert from the deck screw Using one of the CATN025 150 bolts and a flat washer to cover the hole thread the bolt into the insert and pull the insert into the opposite side of the deck until the insert is flush with the deck surface Repeat this procedure with the remaining five inserts 10 Using a clean dry cloth wipe the top surface of the deck clean of any dirt dust or debris 11 Set the replacement or flipped deck inside of the replacement running belt Set the running belt and deck combination in its mounting position on the treadmill Place two running belt gauges on each side of the running belt being sure that the gauges are not across a belt seam Set the gauges to the 3 mark as shown in the Illustration below 12 Slide the drive roller into running belt and into the drive belt Hand start both drive roller mounting bolts 13 Tighten the left hand drive roller bolt fully The left hand side of the drive roller should be as far forward as possible 14 Tighten the right hand drive roller bolt until the mark placed on it in step 5 aligns wi
9. off position Remove the A C line cord from the outlet 2 Remove the treadmill s motor cover Carefully lay the treadmill on it s right side 3 Remove the hitch pin and incline motor 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 If the lift tube rotates the lift motor must be re calibrated per Procedure 4 1 4 Remove the hitch pins from the two lift platform pivot pins Remove the lift platform pivot pins Remove the lift platform from the treadmill Diagram 6 1 Lift Platform Mounting Pins Incline Motor Pin 5 Setthe replacement lift platform in it s mounting position and replace both pivot pins Secure the pivot pins with their hitch pins Replace the incline motor pin and secure it with a hitch pin 6 Carefully set the treadmill in its upright position and check treadmill operation per Procedure 3 7 Replace the treadmills motor cover Page 34 9 31 9 33 9 35 Treadmill Procedure 6 3 Replacing the Lower PCA 4 Diagram 6 3 Lower PCA Set the treadmill circuit breaker in the off position Remove the A C line cord from the A C outlet Remove the treadmill s motor cover Disconnect the lower PCA drive motor leads red and black at the mid point connector between the lower PCA and the drive motor Disconnect Both lift motor connectors J1 and J8 the
10. on position Press the QUICK START to start the running belt Use the INCLINE v key to lower the incline to 0 Set the treadmill circuit breaker in the off position and remove the A C line cord from the A C outlet Remove the treadmills motor cover disconnect the lift motor plugs from J1 and J8 connectors of the lower logic PCA See Diagram 5 2 Remove the lift motor s green frame ground wire from the treadmill s frame Lay the replacement lift motor on the floor in front of the treadmill and connect it s two plugs to the J1 amp J8 connectors of the lower logic PCA Calibrate the lift motor per Procedure 4 1 Lay the treadmill on either its left or right side as convenient Remove the hitch and clevis pins from the top and bottom of the lift motor Remove the lift motor from the treadmill Set the calibrated lift motor in its mounting position Replace the upper clevis and hitch pins Replace the lower clevis and hitch pins It may be necessary to slightly rotate the lift tube to align it so that the clevis pin may be inserted To align the hole in the lift tube rotate it in the direction that will cause the least amount of rotation to make alignment possible Route the lift motor cables to the lower PCA Replace the treadmills motor cover Check treadmill operation per Procedure 3 Page 33 9 31 9 33 9 35 Treadmill Procedure 6 2 Replacing the Lift Platform 1 Set the treadmill circuit breaker in the
11. s rear most mounting position toward roller Replace and hand tighten the drive motor mounting screws removed in step 6 Roll the drive belt in place on the drive motor pulley Tension the drive belt and mount the drive motor per Procedure 4 2 Connect the black and red drive motor wires to the mating black and red connectors on the lower PCA Set the speed sensor in its mounting position on the drive motor and fasten with the screw removed in step 3 Torque the mounting screws to 25 inch pounds Re install the motor cover Check treadmill operation per Procedure 3 Page 39 9 31 9 33 9 35 Treadmill Procedure 6 6 Replacing the Circuit Breaker Diagram 6 5 Treadmill Dress Pan 10 Set the treadmill circuit breaker in the off position and unplug the treadmill s line cord from the A C outlet Remove the treadmill s motor cover Remove the four screws that fasten the mounting panel to the treadmill el Rear View Mounting Screw Line Filter A C Input Mounting Module Screw Mounting Panel Circuit Breaker Note where both brown wires the yellow wire and the violet wire are connected to the circuit Disconnect all four wires from the circuit breaker Lift the mounting panel from the treadmill frame to access the bottom side of the mounting panel Note the orientation of the circuit breaker in the dress panel The replacement circuit breaker must be mounted in the same orientation Remove t
12. 9 33 9 35 Treadmill Procedure 2 1 Accessing the Hardware Validation Program The treadmill s diagnostic program consists of the following modes Display Test Keyboard Test Heart Rate Test Machine Test Procedure 1 2 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker Refer to diagram 2 1 below and press keys RESET 5 1 7 6 5 7 6 1 sequentially Use the numeric keypad to enter the number sequence The ARROW keys will step you through the test modes listed above allowing you to skip tests or perform only specific tests DISPLAY TEST Press the OK key to enter the display test Press the OK or ENTER key several times to step through all of the LED s on the display Ensure that all of the LED s illuminate Press and hold the OK or ENTER key to exit the display test Diagram 2 1 9 33 Display Numeric Keypad OK key Arrow Keys RESET key Page 3 10 11 12 13 14 15 16 17 18 19 9 31 9 33 9 35 Treadmill KEYBOARD TEST The keyboard test will place a dot on the display for each key on the display including the numeric keypad Pressing a key will cause the dot associated with the key to go out Test all of the keys in this manner Tug on the safety key lanyard to ensure that the STOP key is activated Press and hold the OK or ENTER key to exit the keyboard test HEART RATE TEST The heart rate test will display the heart ra
13. IPRECOR Move Beyond 9 31 9 33 9 35 Treadmill 9 31 9 33 9 35 Treadmill Warning This service manual is for use by Precor trained service providers only If you are nota 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 2007 Precor Incorporated Unauthorized Reproduction and Distribution Prohibited By Law 20081 116 Page 1 9 31 9 33 9 35 Treadmill Section One Things you Should Know About This Appendix Section One Things You Should Know This section includes technical specifications Read this section as well as the 9 33 or 9 35 Treadmill Owner s Manual before you perform the maintenance procedures in this manual Section Two Software Features Precor treadmills are programmed with several diagnostic
14. If you have performed all of the procedures above and have been unable to correct the problem call Precor customer service Page 20 9 31 9 33 9 35 Treadmill Procedure 5 2 Troubleshooting the Lift System Lift System Description The lift system on these units consists of an A C line voltage driven lift motor 120 Vac and an internal 1 KQ potentiometer for lift position identification The lift motor contains two motor windings one to operate the motor in an upward direction and the other to operate the motor in a downward direction As the lift motor is operated the motor also rotates the potentiometer via an internal gear system Therefore the position of the lift system can be determined by monitoring the value of the internal potentiometer The lift motor is initially set at a known starting position calibration See Procedure 4 1 subsequent motor movement is tracked via the potentiometer resistance reading Note If the potentiometer circuit is shorted the diagnostics A D number will be if the potentiometer circuit is open the diagnostics A D number will be 255 Note All resistance measurements must be performed with power removed from the treadmill Performing resistance measurements with voltage applied may damage your ohmmeter Procedure 1 If the lift motor operates but creates a lift error error 40 or 42 go to step 16 If the lift motor will not move continue with step 2 2 Set the treadmills cir
15. It will now be necessary to touch up the running belt tracking however if this procedure was carefully followed the belt tracking should be very close 14 Remove both belt gauges from the running belt 15 Start the treadmill and operate it at 2 m p h Observe the running belt If the belt drifts away from its centered position re track it by adjusting the take up roller mounting bolts as described in step 16 Page 46 16 17 18 19 20 21 9 31 9 33 9 35 Treadmill If the belt drifts to the right slowly turn the right hand mounting bolt clockwise until the drifting stops If the belt drifts to the left slowly turn the left hand mounting bolt clockwise until the drifting stops Only a very small adjustment should be required 1 8 to 1 4 turn Increase the treadmill speed to 4 m p h if the belt drifts away from center touch up the tracking as described in step 18 If the belt drifts to the right slowly turn the left hand mounting bolt counter clockwise until the drifting stops If the belt drifts to the left slowly turn the right hand mounting bolt counter clockwise until the drifting stops Only a very small adjustment should be required 1 8 to 1 4 turn Increase the treadmill speed to 8 m p h if the belt drifts away from center track it as described in step 16 Increase the treadmill speed to maximum if the belt drifts away from center track it as described in step 18 Set the treadmill at a comfo
16. Procedure 6 3 If the DS1 LED does not illuminate and the display indicates that the lift should be moving upward replace the upper PCA If the A C voltmeter reads the presence of A C line voltage and an error 40 is displayed go to step 10 If the A C voltmeter reads the presence of A C line voltage and an error 42 is displayed continue with step 11 Set the treadmill s circuit breaker in the off position and remove the A C line cord from the A C outlet Remove the lift motor connector from the J1 connector on the lower PCA Visually inspect the lift motor connector for broken or improperly crimped connections Using an ohmmeter read the resistance between terminals 1 amp 4 and between terminals 3 amp 4 Both readings should be approximately 13 25 Q If either reading is open or very high resistance replace the lift motor per Procedure 6 1 Set the treadmill s circuit breaker in the off position and remove the A C line cord from the A C outlet Remove the lift motor connector from the J8 connector on the lower PCA Visually inspect the lift motor connector for broken or improperly crimped connections Using an ohmmeter measure between terminals 1 amp 3 1 amp 2 and 2 amp 3 of the lift motor connector Terminals 1 and 3 should read approximately 1 KQ The sum of the two readings between terminals 2 amp 3 and 1 amp 2 should total approximately 1 KQ If either reading is open or very high resistance repl
17. ROW keys to toggle between U S and METRIC Press the ENTER key to select the currently displayed measurement unit Note To change the measurements units on a 9 35 Press the METRICS key select the measurement unit with the ARROW keys and save the selection with the OK key 8 9 10 11 12 13 14 15 SET MAX PAUSE TIME Press the OK or ENTER key Use the ARROW keys to set the maximum pause time between 1 and 10 minutes Press the ENTER key to select the currently displayed pause time SET COOL DOWN TIME Press the OK or ENTER key Use the ARROW keys to set the COOL DOWN time between 1 and 5 minutes Press the ENTER key to select the currently cool down time Page 8 16 17 18 19 20 9 31 9 33 9 35 Treadmill SET SPEED LIMIT Press the OK or ENTER key Use the ARROW keys to set the maximum speed between 1 and 12 MPH Press the ENTER key to select the currently displayed speed limit Press the RESET key to exit the set club parameters display Page 9 9 31 9 33 9 35 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 Software version number Program number running when the problem occurred A description of a What happened or failed to happen b The action taken by the user
18. ace the lift motor per Procedure 6 1 If you have performed all of the procedures above and have been unable to correct the problem call Precor customer service Set the treadmill s circuit breaker in the off position and remove the A C line cord from the A C outlet Remove the lift motor connector from the J1 connector on the lower PCA Visually inspect the lift motor connector for broken frayed or improperly crimped connections Using an ohmmeter read the resistance between terminals 1 amp 4 3 amp 4 and 1 amp 3 The readings should be approximately 13 25 O 13 25 O and 26 5 O respectively If the reading is significantly low replace the lift motor per Procedure 6 1 Page 22 14 15 16 9 31 9 33 9 85 Treadmill If the resistance readings in step 13 are normal replace the lower logic PCA per Procedure 6 3 If you have performed all of the procedures above and have been unable to correct the problem call Precor customer service Set the treadmill s circuit breaker in the off position and remove the A C line cord from the A C outlet Remove the lift motor connector from the J8 connector on the lower logic PCA Visually inspect the lift motor connector for broken or improperly crimped connections Using an ohmmeter measure between terminals 1 amp 3 1 amp 2 and 2 amp 3 of the lift motor connector Terminals 1 and 3 should read approximately 1 KQ The sum of the two readings between terminals 2
19. amp 3 and 1 amp 2 should total approximately 1 KQ If either reading is open or very high resistance replace the lift motor per Procedure 6 1 If the resistance measurements in step 16 are normal the problem may be either the lower logic PCA or the upper PCA Replace the lower logic PCA If the problem persists reinstall the original lower logic PCA and replace the upper PCA If you have performed all of the procedures above and have been unable to correct the problem call Precor customer service Page 23 9 31 9 33 9 35 Treadmill Procedure 5 3 Troubleshooting the Speed Sensor Note The speed sensor is an optical sensor that emits a pulse when an interrupter lobe passes between it s transmitter and receiver The speed control circuit processes the pulse train emitted by the speed sensor The speed sensor signal is a real time representation of the operating speed of the treadmill The speed control circuit compares the real time speed speed sensor output with the speed that it expects the treadmill to be operating at and acts accordingly to control treadmill speed or initiate an error code sequence if necessary Typically if a problem exists with the speed sensor the drive motor will operate perhaps only briefly before a speed related error occurs errors 20 26 1 Remove the treadmill s motor cover and set the treadmill s circuit breaker in the on position Using a DC voltmeter measure the voltage between termi
20. and all anti static precautions must be followed during this pro cedure 2 Remove the printed circuit assembly per its associated procedure 3 The prom is a forty four pin square package PLCC44 This prom should be removed with a proper IC removal tool see the illustration below PLCC44 removal tool 4 IC s may inserted into their socket by hand by carefully aligning the notch on the IC with the notch on the IC socket and carefully pressing the IC into its socket See the illustrations below for the alignment notches Care must be taken that the IC legs on a DIP28 are all aligned in the socket to prevent the legs from bending when inserted The PLCC44 IC must be carefully aligned squarely in its socket or it will not insert Do not force the IC into its socket If it does not insert easily remove the it and re align it in its socket Notch PLCC44 Notch p f Page 37 9 31 9 33 9 35 Treadmill Procedure 6 4 Replacing the Speed Sensor Diagram 6 4 Speed Sensor Mounting 10 Set the treadmill circuit breaker in the off position Remove the A C line cord from the A C outlet Remove the treadmill s motor cover Disconnect the plug from the J3 connector on the lower PCA Rotate the flywheel so that the speed sensor is between flywheel lobes Remove the screw that fastens the speed sensor to the treadmill drive motor See Diagram 6 4 7 nterrupter Set the replacement speed s
21. 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 A treadmill operating from a non dedicated circuit or a circuit breaker of less than 20 amps capacity will not have the necessary power available to operate normally under higher load conditions The lack of available power can cause any number of symptoms ranging from numerous intermittent seemingly inexplicable error conditions poor speed control or tripping the house circuit breaker If any of the above symptoms exist the external A C circuit must be checked and confirmed to be a 20 amp dedicated circuit before troubleshooting the treadmill In addition the A C voltage must be checked Nominal A C operating voltage on 120 Vac circuits is 105 Vac to 120 Vac Nominal A C operating voltage on 240 Vac circuits is 208 Vac to 240 Vac For operator safety considerations and to minimize electrostatic discharge conditions the A C frame ground continuity must also be verified to be a low resistance connection to the A C distribution ground bar Important If the A C circuit feeding a treadmill is found to be a non dedicated circuit or a circuit equipped with a circuit breaker with a capacity of less than 20 amps the A C circuit must be corrected to be a 20 amp dedicated circuit before any reliable troubleshooting can be performed on the treadmill More importantly a non dedicated circuit
22. and setup features This section contains the procedures you need to access the diagnostic features on this treadmill Section Three Checking Treadmill Operation This section provides you with a quick way 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 Section Four Inspection and Adjustment Procedures Perform inspection procedures when a trouble symptom points to a particular problem and after removing and replacing major components Many maintenance problems can be fixed by adjusting various treadmill components This section also provides you with the step by step procedures required to make these adjustments Section Five Troubleshooting Procedures The diagnostic and troubleshooting procedures contained in this section should be performed when it is necessary to isolate a problem to a particular component Section Six Replacement Procedures When a treadmill component must be replaced go to this section and follow the step by step procedures required to remove and replace the component Section Seven Technical Diagrams and Parts Lists This section includes wiring diagrams and block diagrams for the 9 33 and 9 35 Treadmill General Information For the latest exploded view diagram part number and part pricing information visit the Precor dealer website at www precor com connection Page 2 9 31
23. cline display increments to 15 as the INCLINE A key is pressed Press the INCLINE v key while viewing the electronic console Confirm that the running bed returns to a level position and the incline display decrements to 0 9 31 9 33 or 2 9 35 as the INCLINE v key is pressed Turn off the treadmill with the circuit breaker then unplug the treadmill from the wall outlet Page 11 9 31 9 33 9 35 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 2 Remove the motor cover Place the treadmill on it s right side Remove hitch and clevis pins that secure the lift tube to the lift platform Diagram 4 1 Lift Motor Mounting 1700 pm 1 1 16 Drive Screvv ie m 7001043944064101 Mapa Iu almal 1 0H 8 OFF MY 8245 1 0 i Lift Tube Page 12 9 31 9 33 9 35 Treadmill 4 Plug the power cord into the wall outlet set the treadmill circuit breaker in the on position 5 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 the console use the INCLINE A or INCLINE v key to set the lift calibration number to 38 CAUTION While running the lift motor in the diagnostics mode it is possible to operate the lift motor beyond its normal range o
24. count down and for the running belt to begin moving Once the running belt is moving pull the safety stop key tether See the illustration below CAUTION If the running belt does not stop turn off the power using the ON OFF switch at the front of the treadmill and unplug the power cord The treadmill must remain out of service until the stop switch is repaired If the running belt stops continue with the cleaning procedure 2 A clean dry towel approximately 36 inches or 1 meter in length is required Fold the towel in half lengthwise lift the running belt up and insert the towel beneath the belt so that an end of towel extends on to each deck trim See the illustration below Safety Stop Key Teth 3 Stand to one side of the treadmill push the Quick Start button grasp the towel as illustrated in the illustration above Note You will have 3 seconds to firmly grasp your hands on the towel before the treadmill running belt begins to move Allow the treadmill to run for about one minute while hold ing the towel firmly in place CAUTION If the towel becomes loose it may be pulled into the treadmill s rollers Pull the safety key tether to stop the treadmill and retrieve the towel no damage should occur Start the procedure over again See the illustration below 4 Keep one hand firmly grasped on the towel use your other hand to pull on the safety stop key tether to stop the treadmill running belt See the illus tration
25. cuit breaker in the off position and remove the A C line cord from the A C outlet Remove the treadmill s motor cover 3 Remove the F1 Lift fuse from the lower PCA Using an ohmmeter check the resistance of the F1 fuse See Diagram 5 2 The fuse should measure approximately 0 1 O or less If the fuse is open or high resistance replace the fuse Diagram 5 2 Lower PCA y F1 Lift Fuse m J4 J1 A C Input 1 uE ail b J8 Page 21 10 11 12 13 9 31 9 33 9 35 Treadmill Insert the treadmill s A C line cord in the A C outlet and set the circuit breaker in the on position Set the treadmill in the manual program and press the LIFT key If the lift motor operates normally test treadmill operation per Section 3 If the lift motor still does not operate retest the lift fuse per steps 2 amp 3 If the fuse is open again continue with step 13 If the fuse is good continue with step 5 Connect an A C voltmeter between terminals 1 amp 4 of the J1 connector See Diagram 5 2 Set the treadmill in the manual program and press the LIFT A key The A C voltmeter should read A C line voltage 120 Vac and the red DS1 LED should illuminate Note that the A C line voltage reading will only be present prior to an error condition occurring If the F1 fuse is good and the DS1 LED illuminates and the A C voltmeter does not read the presence of A C line voltage replace the lower logic PCA per
26. dmill No hand held reading No chest strap reading 11 Access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that neither a chest strap signal or a hand held signal is being accepted with either a heart rate test transmitter or a chest strap transmitter Check the plug connector connections on both the heart rate PCA J4 and upper PCA J1 If neither a chest strap signal or a hand held signal is being accepted measure between the ground and 5 Vdc pins on J4 for 5 Vdc If 5 Vdc is present replace the heart rate PCA If 5 Vdc is not present remove the connector from J4 of the heart rate PCA Measure between the ground and 5 Vdc pins of the connector just removed from the heart rate PCA for 5 Vdc If 5 Vdc is present replace the heart rate PCA If the 5 Vdc is not present measure between the corresponding pins of J1 on the upper PCA red and black wires If 5 Vdc is not present replace the upper PCA If 5 Vdc is present replace the upper PCA to heart rate PCA cable Constant or intermittent readings when neither the hand held or chest strap is in use 15 16 Verify that a ferrite core is clamped around the heart rate PCA to upper PCA cable Constant or intermittent heart rate readings when neither heart rate system is in use is caused by something in the near vicinity radiating RF energy that is being received by the chest strap po
27. ensor in its mounting position and fasten it vvith the screvv removed in step 4 Torque the screvv to 25 inch pounds Connect the speed sensor connector to the J3 connector of the lower PCA Slowly rotate the flywheel to ensure that the flywheel lobes do not contact the speed sensor Set the treadmill circuit breaker in the on position and check treadmill operation per Procedure 3 Replace the treadmill s motor cover Page 38 9 31 9 33 9 35 Treadmill Procedure 6 5 Replacing Drive Motor 10 11 Set the treadmill circuit breaker in the off position and unplug the treadmill s line cord from the A C outlet Remove the treadmill s motor cover The drive motor speed sensor tooth wheel and flywheel are balanced as a matched pair Since the flywheel is balanced to a specific motor flywheels and speed sensor tooth wheel should not be removed from one and installed on a different motor If the drive motor is replaced the drive motor speed sensor tooth wheel and flywheel should be replaced as a unit Remove the screw that fastens the speed sensor to the treadmill drive motor See Diagram 6 4 Move the speed sensor as far from the drive motor as possible Disconnect the red and black drive motor wires at the mid point connector between the drive motor and the lower PCA Loosen the four drive motor mounting bolts See Diagram 4 3 Remove the drive belt from the drive motor pulley Set the drive motor in it
28. f motion When you perform the next step care must be taken not to jam the lift tube against the motor frame 6 Press the RESET key to exit the diagnostics mode 7 Set the treadmill circuit breaker in the off position unplug the line cord from the wall outlet 8 Rotate the lift tube clockwise by hand as far as possible Then rotate the lift tube counter clockwise until the distance from the top of the lift tube to the lift motor is 1 1 16 inch See Diagram 4 1 While rotating the lift tube be sure the lift motor drive screw does not rotate If the drive screw is rotated return to step 4 and repeat steps 4 through 7 9 Replace the clevis and hitch pins removed in step 3 Return the treadmill to an upright position 10 Plug the line cord into the wall outlet set the treadmill circuit breaker in the on position 11 Check the calibration of the lift system by performing the following steps a Press the QUICK START key Press the INCLINE A key until the console displays 15 incline b Press the INCLINE v key to return to 0 9 31 9 33 or 2 9 35 incline 12 Re install the motor cover Page 13 9 31 9 33 9 35 Treadmill Procedure 4 2 Adjusting Drive Belt Tension 1 Set the treadmill circuit breaker in the off position and unplug the line cord from the wall outlet 2 Remove the motor cover 3 Place the drive belt tension gauge on the drive belt as shown in Diagram 4 2 Diagram 4 2 Drive Belt
29. he circuit breaker mounting screws Remove the circuit breaker from the treadmill Set the replacement circuit breaker in the OFF position to prevent the treadmill from starting immediately when the line cord is inserted in the wall A C outlet Fasten the circuit breaker to the mounting panel using the screws removed in step 6 Connect the two brown yellow and violet wires as noted in step 4 Set the mounting panel in its mounting position fasten it with the screws removed in step 3 Replace the treadmill s motor cover Check treadmill operation per Section 3 Page 40 9 31 9 33 9 35 Treadmill Procedure 6 7 Replacing the Line Filter 1 Set the treadmill circuit breaker in the off position and unplug the treadmill s line cord from the A C outlet 2 Remove the treadmill s motor cover 3 Make note of where the two blue two brown and green yellow are connected to the line filter See Diagram 6 5 Disconnect all of the wiring from the line filter 4 Remove the mounting hardware that fastens the line filter to the mounting panel and remove the line filter 5 Set the replacement line filter in it s mounting position the side with three terminals must face the circuit breaker Fasten the line filter to the mounting panel with the mounting hardware removed in step 3 6 Connect the wiring to the line filter as noted in step 3 7 Replace the treadmill s motor cover 8 Check treadmill operation per Sec
30. he refresh rate on digital ammeters may make it difficult to see the current peaks 1 Remove the treadmills motor cover and place the A C clamp on ammeter on the brown wire from the A C input module or A C power cord to the circuit breaker on off switch See the illustration below Circuit Breaker A C Input Module Clamp on Ammeter 2 Setthe treadmill s speed at 3 m p h 4 8 k p h and the incline at 096 Walk on the treadmill and observe the peak A C current reading Typical peak A C current readings on a new running belt and deck are between 3 and 6 amperes 3 Ifthe peak current reading approach 20 amperes the running belt should be replaced The running deck should be flipped or replaced if the running deck has been previously flipped See Procedure X for running belt and running deck replacement Page 31 9 31 9 33 9 35 Treadmill 4 Ifthe peak A C current readings are greater than on a new running belt and deck combination but not approaching 20 amperes the reading will give you an indication of the running belt and deck combination s general condition Page 32 9 31 9 33 9 35 Treadmill Procedure 6 1 Replacing the Lift Motor Note The replacement lift motor must be calibrated prior to installation The defective lift motor is then removed and the calibrated replacement lift motor is installed 1 2 If the incline is at 0 skip to step 3 Set the treadmill circuit breaker in the
31. ld contact wiring is reversed The end of the wire harness that connects to the hand held contacts in the handlebar is segregated into two groups One group has blue shrink wrap around it and the other group has black shrink wrap around it The blue group must go to the right hand contacts and the black group must go to the left hand contacts In both groups the black wire must go to the lower contact and the red wire must go to the upper contact If necessary rewire the hand held contacts as described above and test as described in step 4 If the wiring is correct refer to Diagram 6 3 for the following measurements With an ohmmeter measure between the lower right contact pin on the J1 connector and the lower right hand held heart rate contact on the handlebar The reading should be 1 Q or less Measure between the upper right contact pin on the J1 connector and the upper right hand held heart rate contact on the handlebar The reading should be 1 Q or less Measure between the upper left contact pin on the J1 connector and the upper left hand held heart rate contact on the handlebar The reading should be 1 Q or less Measure between the lower left contact pin on the J1 connector and the lower left hand held heart rate contact on the handlebar The reading should be 1 Q or less If any of the above readings are greater than 1 Q replace the heart rate PCA to handlebar wire harness Page 29 9 31 9 33 9 35 Trea
32. ler mounting bolts 4 If applicable remove the finger guard located in front of take up roller 5 Remove both take up roller mounting bolts The belt gauge readings will decrease as the take up roller mounting bolts are removed Remove the take up roller from the treadmill Take Up Roller Mounting Bolt Page 48 10 11 12 13 14 15 16 17 18 9 31 9 33 9 85 Treadmill Slide the replacement take up roller into the running belt and set it in its mounting position Hand start both take up roller mounting bolts that were removed in step 5 Alternate tightening the two take up roller mounting bolts in order to tighten both ends evenly until both running belt gauges again read exactly 3 When both gauges again read 3 the belt is at its original tension It will now be necessary to touch up the running belt tracking however if this procedure was carefully followed the belt tracking should be very close Remove both belt gauges from the running belt Start the treadmill and operate it at 2 m p h Observe the running belt If the belt drifts away from its centered position re track it by adjusting the take up roller mounting bolts as described in step 11 If the belt drifts to the right slowly turn the right hand mounting bolt clockwise until the drifting stops If the belt drifts to the left slowly turn the left hand mounting bolt clockwise until the drifting stops Only a very small adjustment should
33. may constitute a safety hazard to the treadmill operator 120 Vac Systems 120 Vac distribution systems utilize a single pole circuit breaker hot lead and a neutral lead connected to a common neutral ground bar The A C safety ground green wire is connected to a separate ground bar in the distribution system The most common problems found are 1 the circuit is fed by a circuit breaker of less than 20 amp capacity 2 the circuit breaker correctly feeds a single A C outlet but the neutral is common between several A C outlets and 3 both the hot and neutral leads feed several A C outlets The appropriate correction action or actions see below must be followed if any of the above conditions exist Corrective actions should only be undertaken by a licensed electrician 1 The circuit breaker feeding the treadmill is not a 20 amp circuit breaker If the circuit breaker is greater than 20 amps the circuit breaker should be replaced with a 20 amp circuit breaker If the circuit breaker is less than 20 amps the circuit breaker must be replaced with a 20 amp circuit breaker and the wiring from the A C distribution must be capable of safely handing 20 amps If the A C wiring is under sized it must be replaced with wire capable of safely handling 20 amps Please refer to local electrical codes when determining the appropriate wire size for a 20 amp circuit Page 26 9 31 9 33 9 35 Treadmill 2 The circuit breaker correctly feeds a
34. mill circuit breaker in the off position and unplug the treadmill s line cord from the A C outlet Remove the treadmill s motor cover Remove the screws that retain the drive motor brush cover Carefully remove the heavy paper cover from the brush access opening Disconnect the brush wire from the tab on the brush housing Remove the brush spring by depressing the tab on the brush spring Remove the brush from it s brush holder See Diagram 6 6 Diagram 6 6 Drive Motor Brush Brush Brush Spring Slide the replacement brush into the brush holder Be sure that the angled edge of the brush is oriented so that the brush face makes full contact with the motor commutator Reinstall the brush spring and connect the brush wire to the tab on the brush holder Replace the heavy paper cover in the brush access opening Replace the brush cover and fasten it with the screws removed in step 3 Repeat 3 8 with remaining drive motor brush Page 43 9 31 9 33 9 35 Treadmill 10 Replace the treadmill s motor cover 11 Check treadmill operation per Procedure 3 Page 44 9 31 9 33 9 35 Treadmill Procedure 6 10 Drive Roller Replacement This procedure is to be used to replace a drive roller while maintaining the drive belt s original tensioning and the running belt s original tension and tracking settings Two running belt gauges Precor part number 20007 101 are required It is important that this procedu
35. moved in step 4 Place the brush wires in the cable clamp on the lift motor support and loop them to take up extra wire length as shown in the illustration above Brush Wire Ferrule Spring 10 Reconnect the brush wires to the lower PCA wires 11 Set the power input panel in its mounting position and fasten it with the hardware removed in step 3 12 Replace the treadmill s motor cover 13 Insert the treadmill s A C power cord into the A C outlet and set the treadmill s on off switch in the on position 14 Thoroughly test all treadmill functions per Section Three Page 54 9 31 9 33 9 35 Treadmill Wiring Diagram 7 1 9 31 9 33 9 35 Heart Rate PCA D Pad Keypad Metrics PCA G Y BR Line Filter BL BR Circuit Breaker d ncline Motor mi BK Speed Sensor Drive Motor Page 55 9 31 9 33 9 35 Treadmill Block Diagram 7 2 9 31 9 33 9 35 gt ya ya av Addns tds JOJO JoMOd oq IPA OSL EN 19 a H gt vw yg t yg ua pe H s dwe 02 OVA 1011 021 due 63 eur JOSU8S ya p ds eer A ddns uonsod 7 ya eer 18MOd un es OGA 92 AL M dies e OVA 021 M rrir Sem S y earl a dwe z id VOd xu x umog HT s b OPA SZ esa dn y pex 190
36. mps If the A C wiring is under sized it must be replaced with wire capable of safely handling 20 amps Please refer to local electrical codes when determining the appropriate wire size for a 20 amp circuit Both the hot leads feed several A C outlets Both hot leads must be removed from treadmill s A C outlet and two new hot leads from the treadmill s A C outlet to the circuit breaker must be added A licensed electrician may use the followings hints to determine if an A C service is dedicated 1 If on a 120 Vac system the A C distribution panel contains more circuit breakers than neutral leads the system has shared neutral leads and is not dedicated If an A C outlet 120 or 240 Vac has multiple hot and or neutral leads it is not a dedicated If either of the above conditions exist the system is not dedicated However absence of the above conditions does not necessarily mean that the system is dedicated If any doubt exists about A C systems dedication point to point tracing of the A C wiring may be the only way to prove system dedication Page 27 9 31 9 33 9 35 Treadmill Procedure 5 5 Troubleshooting Heart Rate Circuit Description The hand held heart rate system is actually a dual system that is it can accept a heart rate signal from either the hand held heart rate contacts on the unit s handlebar or from a Polar heart rate chest strap transmitter The PCA is configured for hand held priority That i
37. nal 3 of J3 and terminal 4 of J3 on the lower PCA Slowly rotate the drive motor flywheel The voltage should read approximately 0 25 Vdc when a flywheel lobe is between the speed sensor legs and approximately 5 Vdc when a flywheel lobe is not between the speed sensor legs Diagram 5 3 Speed Sensor Mounting Interrupter Speed Sensor 2 Ifthe voltages in step 1 are correct skip to step 5 If the voltage in step 1 is Vdc or significantly low when a flywheel lobe is between the speed sensor legs continue with step 3 Page 24 9 31 9 33 9 35 Treadmill Measure the voltage between terminal 1 of J3 and terminal 4 of J3 on the lower PCA see Diagram 5 2 The voltage should read approximately 5 Vdc If the voltage is missing or significantly low disconnect the speed sensor plug from the lower PCA Measure the voltage between pins 1 amp 4 of the J3 connector on the lower PCA If the voltage is approximately 5 Vdc replace the speed sensor If the voltage is missing or significantly low replace the lower logic PCA If at this point the speed sensor output is good but a speed error occurs replace the upper PCA If you have performed all of the above procedures and have been unable to correct the problem call Precor Customer Support Page 25 9 31 9 33 9 35 Treadmill Procedure 5 4 Troubleshooting the External A C Power Source It is extremely important that any Precor treadmill be connected to
38. ng data Odometer Hour Meter U Boot SW U Base SW Lower SW Metrics Board SW Usage log Error log Procedure Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker Refer to diagram 2 1 above and press keys RESET 6 5 sequentially Use the numeric keypad to enter the number sequence The ARROW keys will step you through the display modes listed above allowing you to skip displays or view only specific displays The display will momentarily read DIAGS INFORMATION DISPLAY ODOMETER Press the OK or ENTER key The treadmill s odometer will be displayed as 1234567 MILES or 1234567 KM Note The odometer data is stored in non volatile memory on the upper PCA If the upper PCA 6 Ts 10 11 is replaced the odometer data will be lost Press the OK or ENTER key to exit the odometer display HOUR METER Press the OK or ENTER key The operating time of the unit will be displayed as 12345 HOURS The operating time is defined as total amount of time that the unit has operated in program modes with the drive motor running The hour meter is also used to provide the time stamp for the error code log Press the OK or ENTER key to exit the hour meter display U BOOT SW Press the OK or ENTER key The U Boot SW part number will be displayed The U Boot SW is the software internally used to upload upper PCA operating system software U Base SW Page 5 12 13 14 15 16
39. nning belt wear premature driver roller bearing failure and premature take up roller bearing failure This procedure addresses decks that can be flipped however it is important to note that only double sided decks can be flipped Single sided decks must be replaced 1 Remove the end caps from the rear of treadmill to expose the take up roller mounting bolts 2 Remove the treadmill s motor cover 3 If applicable remove the finger guard from in front of the take up roller 4 Remove both take up roller mounting bolts Remove the take up roller from the treadmill Take Up Roller Mounting Bolt 5 Slowly rotate the drive motor flywheel while pressing the drive belt off of the drive roller pulley Continue until the drive belt walks completely off of the drive roller pulley Drive Belt Mark Bolt Here Drive Roller Pulley 6 Using a fine tip marker or scribe place a mark on the right hand drive roller mounting bolt directly in front of the drive roller shaft The bolt is being marked so that the drive roller can be returned to the exact same position The use of a fine marking line allows for more Page 50 7 8 9 9 31 9 33 9 35 Treadmill accuracy when the replacement drive roller is installed Remove both drive roller mounting bolts Remove the drive roller from the treadmill Remove the running belt and deck from the treadmill If both sides of the deck have been used discard the deck If the bottom side
40. re be followed to maintain correct drive belt and running belt tension When tension is removed from the running belt the belt requires 24 hours for it to relax If tension is removed from the belt and then re tensioned without following this procedure or allowing a 24 hour relaxation period the running belt may be over tensioned Over tensioning the belt will lead to premature running belt wear premature driver roller bearing failure and premature take up roller bearing failure 1 Place two running belt gauges on each side of the running belt being sure that the gauges are not across a belt seam Set the gauges to the 3 mark as shown in the Illustration below 2 Once set the belt gauges can not be disturbed or moved doing so will invalidate the tension settings and necessitate a 24 hour relaxation period before the running belt can be re tensioned 3 Remove the end caps from the rear of treadmill to expose the take up roller mounting bolts Remove the treadmill s motor cover 4 Loosen but do not remove the take up roller mounting bolts The bolts are being loosened to remove tension from the running belt Take Up Roller Mounting Bolt Page 45 9 31 9 33 9 35 Treadmill 5 Slowly rotate the drive motor flywheel while pressing the drive belt off of the drive roller pulley Continue until the drive belt walks completely off of the drive roller pulley Drive Belt Mark Bolt Here Dri
41. rmal chest strap reading 4 10 Access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that a hand held signal is not being accepted by firmly grasping both the right and left hand held contacts on the handlebars Cover as much of the contact surface area with your hands as possible without moving your hands you should receive a heart rate reading within ten seconds If the hand held signal is now being accepted something in the near vicinity is radiating RF radio frequency energy that is being received by the chest strap portion of the heart rate PCA If a hand held signal still not being accepted skip to step 8 Replace the heart rate PCA with a 43579 108 or higher heart rate PCA 43579 108 and higher versions of heart rate PCA are less susceptible to radiated RF energy Access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that a hand held signal is not being accepted by firmly grasping both the right and left hand held contacts with the opposite hands right hand on the left handlebar contacts and left hand on the right handlebar contacts Cover as much of the contact surface area with your hands as possible you should receive a heart rate reading within ten seconds If a hand held signal is still not being accepted skip to step 10 If a hand held signal was accepted in step 11 the hand he
42. rtable running speed and run on the treadmill for a couple of minutes and note the running belt tracking If required track it as described in step 16 Replace the end caps and motor cover removed in step 3 Page 47 9 31 9 33 9 35 Treadmill Procedure 6 11 Take Up Roller Replacement This procedure is to be used to replace a take up roller while maintaining the running belt s original tension and tracking settings Two running belt gauges Precor part number 20007 101 are required It is important that this procedure be followed to maintain correct running belt tension When tension is removed from the running belt the belt requires 24 hours for it to relax If tension is removed from the belt and then re tensioned without following this procedure or allowing a 24 hour relaxation period the running belt may be over tensioned Over tensioning the belt will lead to premature running belt wear premature driver roller bearing failure and premature take up roller bearing failure 1 Place two running belt gauges on each side of the running belt being sure that the gauges are not across a belt seam Set the gauges to the 3 mark as shown in the Illustration below 2 Once set the belt gauges can not be disturbed or moved doing so will invalidate the tension settings and necessitate a 24 hour relaxation period before the running belt can be re tensioned 3 Remove the end caps from the rear of treadmill to expose the take up rol
43. rtion of the heart rate PCA Replace the heart rate PCA with a 43579 108 or higher heart rate PCA 43579 108 and higher versions of heart rate PCA are less susceptible to radiated RF energy Page 30 9 31 9 33 9 35 Treadmill Procedure 5 6 Running Belt amp Deck Troubleshooting This procedure is to be used to determine the condition of the running belt and running deck combination A clamp on ammeter will be used to measure the treadmill s A C input current under load The A C input current is a direct indication of the load being placed on the treadmill Treadmill loading consists of several factors the user s weight treadmill speed treadmill incline setting and the condition of the running belt and running deck condition By making all of the other factors consistent we will be able to determine the relative condition of the running belt and deck combination The A C input current measurements will be performed at 3 m p h 4 8 k p h and 0 incline Because the loading varies with the user s weight you should perform the A C input current measurement test on a new running belt and deck combination That will provide you with a benchmark reading to account for your individual weight Because the A C input current reading will pulse between a high value during foot plant and a low reading between foot plants we suggest the use of an analog clamp on ammeter An analog ammeter makes it very easy to see the A C current pulses T
44. s if both a chest strap and hand heart rate signal are being received the system will accept the hand held signal and ignore the chest strap signal If a hand held signal is not being received the system will accept the chest strap signal Note There are four typical failure modes for the hand held chest strap heart rate system They are hand held is normal no chest strap reading no hand held reading chest strap normal no hand held or chest strap reading or constant or intermittent readings when neither hand held or chest strap are in use Diagram 6 3 Hand held chest strap heart rate PCA XURAL i 1016 17 1 43579 108 or higher Lib at m Heart Rate PCA Ru h Gnd Upper Left Lovver Left Normal hand held reading No chest strap reading 1 Access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that a chest strap signal is not being accepted with either a Polar heart rate test transmitter or a known good chest strap transmitter If this reading is good skip to step 3 2 Using a known good Polar heart rate chest strap verify that the heart rate operates with the known good chest strap If the known good Polar chest strap does corrects the problem replace the original chest strap transmitter 3 Ifthe above procedures did not correct the problem replace the heart rate PCA Page 28 9 31 9 33 9 35 Treadmill No hand held reading No
45. 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 3 Both the hot and neutral leads feed several A C outlets Both the common neutral and hot leads must be removed from treadmill s A C outlet and a new neutral lead and hot lead from the treadmill s A C outlet to the A C neutral distribution bar and circuit breaker must be added 240 Vac Systems 240 Vac distribution systems utilize a double pole circuit breaker two hot leads The A C safety ground green wire is connected to a ground bar in the distribution system The most common problems found are 1 the circuit is fed by a circuit breaker of less than 20 amp capacity and 2 both the hot leads feed several A C outlets The appropriate correction action or actions see below must be followed if any of the above conditions exist Corrective actions should only be undertaken by a licensed electrician 1 The circuit breaker feeding the treadmill is not a 20 amp circuit breaker If the circuit breaker is greater than 20 amps the circuit breaker should be replaced with a 20 amp circuit breaker If the circuit breaker is less than 20 amps the circuit breaker must be replaced with a 20 amp circuit breaker and the wiring from the A C distribution must be capable of safely handing 20 a
46. speed sensor connector J3 the drive motor fan connector J4 and the A C input wires from the lower PCA See Diagram 5 2 Remove both lower PCA mounting screws and remove the lower PCA See Diagram 6 3 Mounting Screw Set the replacement lower PCA in its mounting position and fasten it with the screws removed in step 4 Torque the lower PCA mounting screws to 120 inch pounds The A C input wires are the blue and brown wires from A C line filter on the front dress panel Connect the brown A C input wire to the M4 terminal and the blue A C input wire to the M3 terminal of the lower PCA Connect the black and red drive motor wires to the mating black and red connectors from the lower PCA Connect the speed sensor connector to the J3 connector of the lower PCA Connect the fan connector to the J4 connector of the lower PCA Page 35 10 11 12 13 14 9 31 9 33 9 85 Treadmill Connect the incline motor cables to J1 and J8 of the lower PCA Dress all of the above wiring into the appropriate wire clips along their routing Insert the A C line cord from the A C outlet Set the treadmill circuit breaker in the on position Replace the treadmill s motor cover Check treadmill operation per Procedure 3 Page 36 9 31 9 33 9 35 Treadmill Procedure 6 10 Replacing the PROM 1 The PROM and the associated printed circuit assembly PCA are static sensitive Anti static devices must be used
47. te being received during this test from the hand held grips chest strap transmitter or test transmitter The display will toggle between unfiltered and filtered heart rate readings They will be prefixed U for unfiltered F for filtered When a heart rate signal is being accepted the heart will blink and the heart rate will be displayed in the heart rate window and the main window Test the heart rate in both the hand held and wireless chest strap or test transmitter modes Press the OK or ENTER key to exit the heart rate test MACHINE TEST There are two test modes in the MACHINE TEST they are BELT SPEED and INCLINE Use the ARROW keys to select the desired test BELT SPEED Press the OK or ENTER key POWERBITS will be momentarily displayed then the powerbit number will be displayed The power bit level can be checked by starting the running belt Press the OK key to exit the belt speed test INCLINE Press the OK or ENTER key A D will be momentarily displayed then the analog to digital lift position number will be displayed The analog to digital lift position number represents the incline s physical position The A D number is used to calibrate the incline The incline must be calibrated when a new lift motor is installed Press the RESET to exit the MACHINE TEST Page 4 9 31 9 33 9 35 Treadmill Procedure 2 2 Accessing the Information Display Program The information display will access the followi
48. th the front edge of the drive roller shaft 15 Steps 12 and 13 should place the drive roller into its original position and should now be square to the treadmill frame Page 51 16 17 18 19 20 21 22 23 24 25 26 27 28 29 9 31 9 33 9 35 Treadmill Slowly rotate the drive motor flywheel while pressing the drive belt onto of the drive roller pulley Continue until the drive belt walks completely onto of the drive roller pulley Be sure that the drive belt is fully onto and correctly aligned on the drive roller pulley Slide the take up roller into the running belt and set it in its mounting position Hand start both take up roller mounting bolts that were removed in step 2 Alternate tightening the two take up roller mounting bolts in order to tighten both ends evenly until both running belt gauges again read exactly 3 5 on consumer treadmills or 3 55 on commercial treadmills When both gauges again read 3 5 or 3 55 the belt is at its original tension It will now be necessary to touch up the running belt tracking however if this procedure was carefully followed the belt tracking should be very close Remove both belt gauges from the running belt Start the treadmill and operate it at 2 m p h Observe the running belt If the belt drifts away from its centered position re track it by adjusting the take up roller mounting bolts as described in step 21 If the belt drif
49. tion 3 Page 41 9 31 9 33 9 85 Treadmill Procedure 6 8 Replacing the A C Input Module 10 11 12 Set the treadmill circuit breaker in the off position and unplug the treadmill s line cord from the A C outlet Remove the treadmill s motor cover Remove the four screws that fasten the mounting panel to the treadmill See Diagram 6 5 Lift the mounting away from the frame to access the bottom side of the mounting panel Remove the two screws fastening the line cord retaining bracket to the mounting panel Remove the retaining bracket Remove the line cord from the A C input module Note where the brown blue and green yellow wire are connected to the A C input module Remove all of the wiring from the A C input module Remove the hardware fastening the A C input module to the mounting panel Set the replacement A C input module in its mounting position and fasten it with the hardware removed in step 6 Insert the line cord in the A C input module Replace the line cord retaining bracket and fasten it with the hardware removed in step 5 Set the mounting panel in its mounting position and fasten it with the hardware removed in step 3 Replace the treadmill s motor cover Insert the line cord in the A C outlet Check treadmill operation per Section 3 Page 42 9 31 9 33 9 35 Treadmill Procedure 6 9 Replacing the Drive Motor Brushes 5 Pacific Scientific Motor Only Set the tread
50. ts to the right slowly turn the right hand mounting bolt clockwise until the drifting stops If the belt drifts to the left slowly turn the left hand mounting bolt clockwise until the drifting stops Only a very small adjustment should be required 1 8 to 1 4 turn Increase the treadmill speed to 4 m p h if the belt drifts away from center touch up the tracking as described in step 23 If the belt drifts to the right slowly turn the left hand mounting bolt counter clockwise until the drifting stops If the belt drifts to the left slowly turn the right hand mounting bolt counter clockwise until the drifting stops Only a very small adjustment should be required 1 8 to 1 4 turn Increase the treadmill speed to 8 m p h if the belt drifts away from center track it as described in step 21 Increase the treadmill speed to maximum if the belt drifts away from center track it as described in step 23 Set the treadmill at a comfortable running speed and run on the treadmill for a couple of minutes and note the running belt tracking If required track it as described in step 21 If applicable replace the finger guard removed in step 2 Replace the end caps and motor cover removed in step 1 Page 52 9 31 9 33 9 35 Treadmill Procedure 6 13 Replacing Drive Motor Brushes McMillan Motor Only 1 Set the treadmill s on off switch in the off position and remove the treadmill s power cord from the A C outlet 2 Remo
51. ve Roller Pulley 6 Using a fine tip marker or scribe place a mark on the right hand drive roller mounting bolt directly in front of the drive roller shaft The bolt is being marked so that the drive roller can be returned to the exact same position The use of a fine marking line allows for more accuracy when the replacement drive roller is installed 7 Remove both drive roller mounting bolts Remove the drive roller from the treadmill 8 Slide the replacement drive roller into running belt and into the drive belt Hand start both drive roller mounting bolts 9 Tighten the left hand drive roller bolt fully The left hand side of the drive roller should be as far forward as possible 10 Tighten the right hand drive roller bolt until the mark placed on it in step 6 aligns with the front edge of the drive roller shaft Steps 8 and 9 should place the drive roller into its original position and should now be square to the treadmill frame 11 Slowly rotate the drive motor flywheel while pressing the drive belt onto of the drive roller pulley Continue until the drive belt walks completely onto the drive roller pulley Be sure that the drive belt is fully onto and correctly aligned on the drive roller pulley 12 Alternate tightening the two take up roller mounting bolts in order to tighten both ends evenly until both running belt gauges again read exactly 3 13 When both gauges again read 3 the belt is at its original tension
52. ve the treadmill s motor cover 3 Remove the bolts that retain the treadmill s power input panel and carefully move it out of the way to gain clearance to the front of the drive motor 4 Disconnect the motor brush wires from the Lower PCA wires Remove the cable clamp from the drive motor and remove the brush wires from the cable clamp Remove the brush wires from the cable clamp on the lift support bracket See the illustration below Cable Clamp Cable Clamp Brush Wires Lower PCA Wires 5 Be sure to note that the black brush wire enters the drive motor in the rear and the red brush wire enters the drive motor from the front 6 Using a flat bladed screwdriver remove the front and rear motor brush covers Remove and discard both brushes 7 Set the replacement motor brush with the red wire in its mounting position in the front of the drive motor Set the replacement motor brush with the black wire in its mounting position in the rear of the drive motor 8 Press the brush spring and ferrule into the opening in the motor feed the brush wire into the notch in the brush cover then snap the brush cover back into place The entire motor brush spring and ferrule must be inside the motor Repeat this procedure for the remaining motor brush See the illustration below Page 53 9 31 9 33 9 35 Treadmill 9 Place the brush wires in the drive motor cable clamp and fasten the cable clamp to the drive motor with the hardware re
53. w Page 18 9 31 9 33 9 35 Treadmill Carefully lift the display housing front panel off of the display housing backing plate Disconnect both keypad cables from the upper PCA See Diagram 5 2 Note If the STOP switch cable is disconnected or the STOP switch is activated or defective the message STOP SWITCH will be displayed Diagram 5 2 9 33 Upper PCA amp Keypad z Upper PCA A TE Heart Rate En PCA Upper j Keybbard Cable Lower Keyboard YAR Metrics PCA 10 Safety Stop Cable If the STUCK KEY message is still displayed replace the upper PCA If the STUCK KEY message is no longer displayed replace the display panel If you have performed all of the procedures above and have been unable to correct the problem call Precor customer service Test the keypad per Procedure 2 1 Access the diagnostics program per procedure 2 1 If the key s necessary to access the diagnostic program is not functioning skip to step 11 If all of the keys test good the problem may be user error or a key function that is normally disabled during a particular user program Page 19 11 12 9 31 9 33 9 85 Treadmill If one or more keys do not function correctly either the keypad display housing or upper PCA could be defective Replace the display and repeat step 9 If the display housing did not correct the problem re install the original display housing and replace the upper PCA
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