Service Manual, 9.21, 9.21s, 9.21i, 9.21si. Treradmill.fm
Contents
1. 9 21S 9 21Si Treadmill is programmed with several diagnostic 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 Wiring and Block Diagrams This section includes wiring and block diagrams for 9 21 9 21i 9 21S 9 21Si Treadmill General Information For the latest exploded view part number and part pricing information visit the Precor dealer website at www p2. July 20 1997 used the standard access codes The keys on the display are hypothetically numbered for 1 to 7 from left to right Therefore ENTER would be key 1 INCLINE v would be key 2 etc see Diagram 2 10r 2 2 or on a 9 21i or 9 21Si INCLINE A would be key 1 INCLINE v would be key 2 etc see Diagram 2 3 Placing the unit in the diagnostic mode causes the software to perform the following operations a Testthe LED s mounted on the upper PCA b Provide the option of calibrating the lift system c Display the drive motor power bits d Display and test the heart rate function e Display the error code log f Provide a method of checking the operation of the keys on the electronic console g Testthe circuit breaker trip function 1 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker 2 Press keys RESET 5 1 7 6 5 7 6 1 sequentially 3 Following the version number a horizontal line sweeps from top to bottom and then a vertical line sweeps from right to left Note The lines check the LEDs mounted on the upper PCA If the lines are broken when they sweep across the electronic console replace the upper PCA 4 After the LED test the electronic console displays the potentiometer increment number 5 Press the INCLINE keys Verify that the running bed inclines and declines as the INCLINE and DECLINE keys are pressed 6 Watch the electronic console When the potentiometer increme
3. Remove the printed circuit assembly per its associated procedure Currently we are using two styles of IC software packages they are a 28 pin dual in line package DIP28 and a forty four pin square package PLCC44 Each of these packages should be removed with a r IC removal tool see the illustrations below PLCC44 removal tool DIP28 removal tool The 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 wha ffa fal aha ea C85X V1 02 LWR B D 32 00 SC PCA Page 30 9 21 9 211 9 218 9 21Si Treadmill Wiring Diagram 7 1 9 21 9 21i 9 21S and 9 21Si Lift Motor Ww Lower PCA Hie Power Ty Cord Poe j BR 7 BL BR Load Line Circuit Breaker BK Ribbon Cable wle BKI 7 Ferrite Bead BK Speed Sensor Capacitor Upper PCA BK Page 31 9 21 9 211 9 218 9 21Si Treadmill Block Diagram 7 2 9 21 9 21i 9 21S and 9 21Si OVA Ozi an ya OL Py un SL punog
4. WE o Mp dO aee z jeuiuie o jeurul9 YOS 104 19 J0u02 YOS EL aq Jsnw Zdf 8 Ldr ssedwun Yod seddn punog ZL 6 0qe UMOYS JO O UUOD ofeojoud nm ejqeo uoqqu uid 9 eui pesn s Iupeen punoo OL ISLY 6 BSLPGC ISEZ6 HZ 61V Z 1oejep ssoJo 0107 6 30j9euuoo ejqeo uoqqu vodn eu se DGA S 8 jnouid awes ay pue 10j2euuoo ejqe Qv ur Z uoqqu uid p e pasn 96 Sz 01 Joud DAA S 9 peunjoejnueui S IHUpEen SLC 6 8 IZG L umop dn yt G di 1exeeJq PND v S3JON ejgeua ud OA G e pasnun l Z 3 sajou eec uo nduos q uld s yJIMS SUO IOUUOD ejqe uoqqry vod un ov 8 OGA 06 Josuag mr peeds dwy oz OWA 0cL QN yn vi QN uri i punoJc e Jonuoo YOS T uoqqr pasn ION ol aheojoud 6 punog g yoe ep ss0J2 0197 n OQA 9 onuo JOMUOD JOD UMS 5 54 nmd av un S pesds y7q paads es oL uos ed 1 SQA S v Wold Woo 9i wolf edt lt umop dn 47 9JON du sayeaug yn24 g eu iin eyqeua HI D WMd uonduoseg Uld wos mur suonoeuuo qL uoqqmJ vodn arat v2dn Upea zp65 ISLg 6 SWr6 ISLZ 6 SLZ 6 76 176 Page 32
5. heart rate system has been installed If the HEART RATE indicator does not blink with your heart beat when you perform Procedure 2 1 the problem may be either the heart rate receiver assembly or the chest strap assembly This troubleshooting procedure gives you the information you need to determine which of these components is malfunctioning Procedure 1 If you are referring to this procedure because the HEART RATE indicator did not blink properly when you performed Procedure 2 1 THEN OTHERWISE Skip to Step 6 Continue with the next step Plug the power cord into the wall outlet then turn on the treadmill with the ON OFF switch If necessary use conductive spray Precor part number 37364 101 to ensure good contact between the chest strap transmitter and the user put on the heart rate chest strap transmitter Enter the diagnostics program per Procedure 2 1 or 2 2 Proceed to the heart rate test portion of the diagnostics program HArt will be displayed in the right display window when the heart rate routine is accessed If the HEART RATE indicator blinks with your heart beat and the heart rate information displayed is correct THEN OTHERWISE The Heart Rate system is operating Continue with the next step correctly There is no need to continue with this procedure Re adjust the fit of the chest strap If the HEART RATE indicator still does not blink as described in Step 4 If the chest strap transmitter has a
6. in Section One of the Residential Treadmill Service Manual 2 Remove the screws that secure the upper display assembly to the upper handrail Carefully pull some excess interconnect cable out from the targa upright Rotate the display housing so that the rear of the upper PCA is facing upward and set the display housing on the upper handrail 3 Attach the wrist strap to your arm then connect the ground lead of the wrist strap to the treadmill frame 4 Setthe voltmeter to a range that will conveniently read 6 Vdc 5 Setthe circuit breaker in the on position 6 Use a DVM set for DC volts and read between pin 6 of J4 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 Place the positive lead of the The voltmeter should voltmeter on read Pin 3 of J4 5 Vdc 500 mVdc Pin 4 of J4 5 Vdc 500 mVdc Pin 5 of J4 5 Vdc 500 mVdc Pin 7 of J4 5 Vdc 500 mVdc Pin 8 of J4 5 Vdc 500 mVdc Pin 9 of J4 5 Vdc 500 mVdc Pin 10 of J4 5 Vdc 500 mVdc Page 17 9 21 9 211 9 218 9 21Si Treadmill Table 5 2 Voltage Test Points Function Keys Pressed 10 11 12 13 14 Place the positive At the electronic The voltmeter should voltmeter lead on console press read between Pin 3 of J4 ENTER 0 Vdc and 500 mVdc Pin 4 of J4 INCLINE DOWN 0 Vdc and 500 mVdc Pin 5 of J4 INCLINE UP 0 Vdc a
7. of the lift motor The triacs are controlled either manually or by software control from the upper PCA 1 Ifthe lift motor will not move skip to step 7 If the lift motor moves and an error occurs continue with step 2 2 Access the diagnostics program per Procedure 3 2 and proceed to the lift calibration portion of the diagnostics program If the lift calibration number is 0 or 255 skip to step 3 Operate the lift if the lift calibration number does not increment as the lift moves skip to step 3 If the calibration number increments as the lift moves recalibrate the lift per Procedure 5 3 If recalibration does not correct the problem continue with step 3 3 Setthe treadmill circuit breaker in the off position Using an ohmmeter measure between terminal 4 white wire and terminal 6 orange wire of the P2 connector on the lower PCA The measurement should be approximately 10 KQ or 1 KQ If the measurement is open or significantly high or low replace the lift motor 4 Using an ohmmeter measure between terminals 4 and 5 of P2 and measure between 5 and 6 of P2 on the lower PCA The two measurements should total approximately 10 KQ or 1 KQ If the measurement is open oo or significantly high or low replace the lift motor 5 If you have performed all of the above tests and an error still occurs when the lift motor operates there are three parts that could cause the problem There are not any good tests to check these parts o
8. the running belt Page 4 9 21 9 211 9 218 9 21Si Treadmill Note When the running belt is started the number of power bits will be displayed Power bits are directly related to the drive motor input signal 8 Pressthe SPEED A and Wkeys Verify that the power bits number increments and decrements as the SPEED keys are pressed 9 Press STOP to return to the Enter Your Weight banner 10 Turn off the treadmill with the circuit breaker then unplug the treadmill from the wall outlet Diagram 2 1 9 21 Display DISTANCE TIME SPEED CALORIES INCLINE HEART RATE SCAN he Heart Rate disp hy M TT V A TISETT C SU INCLHECONTROL CHANGE TORESIARTTREADMIL RE IMSERT SAFETY KEF SAFETY KEY BELOW Page 5 Diagram 2 2 9 21S Display V A INCLHECONTROL Manual change speed and incline to vary your workout Walking Courses Segments 015 miles Inte nel Conse Alterra tng restand vorkinenas maximize aercic cond tering Weight Loss Come 2 mini program maxmizes daio burn Hen rt Rate Comme Maintine cur heartrate vitin your target zone by increasing and decreasing indi TORESTIARTTREADMIL RE IMSERT SAFETY KET SAFETY KEY BELOW 9 21 9 211 9 21S 9 21Si Treadmill DISTANCE TIME SPEED CALORIES INCLINE HEART RATE SCAN 909E 4 QUKKSBDAT CHANGE Page 6 9 21 9 211 9 218 9 21Si Treadmill Procedure 2 2 Accessing the Diagnostic Program after July 20 1997 Units built after
9. the voltage is present and the lift motor moves normally skip to step 10 The voltage will only be present until such time as an error occurs If line voltage is not present skip to step 11 If line voltage is measured but the motor does not move replace the lift motor Monitor terminals 1 and 3 white and black wires of P2 Enter the manual program and press the INCLINE v key The measurement should be approximately 120 Vac line voltage If the voltage is present and the lift motor moves normally skip to step 12 The voltage will only be present until such time as an error occurs If line voltage is measured but the motor does not move replace the lift motor If line voltage is not present in both steps 9 and 10 there are three parts that could cause the problem There are not any good tests to check these parts other than substituting a known good part They are lower PCA ribbon cable and upper PCA Replace only one part at a time If the new part does not correct the problem replace the original part If you have performed all of the above tests and the lift system is still not functioning call Precor Technical Support Page 22 9 21 9 211 9 218 9 21Si Treadmill 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
10. 9 21 9 211 9 21S 9 21Si Treadmill 9 21 9 21i 9 21s 9 21si 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 Page 1 9 21 9 211 9 218 9 21Si Treadmill Section One Things You Should Know About This Appendix Section One Things You Should Know This section includes technical specifications and a procedure matrix Read this section as well as the 9 21 9 211 9 21S 9 21Si Treadmill Owner s Manual before you perform the maintenance procedures in this manual Section Two Software Features Precor s 9 21 9 21i
11. NE A would be key 1 INCLINE v would be key 2 etc see Diagram 2 2 This procedure allows you to display the number of miles or kilometers logged on the treadmill Procedure 1 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker Press keys RESET 6 5 sequentially The software version will be displayed Press the ENTER key to continue The console displays the number of miles logged or kilometers on the treadmill Turn off the treadmill with the circuit breaker then unplug the treadmill from the wall outlet Page 10 9 21 9 211 9 218 9 21Si Treadmill Procedure 2 5 Selecting U S Standard or Metric Units prior to July 21 1997 Selecting United States standard units causes information to be displayed in feet miles and pounds Information is displayed in meters kilometers and kilograms if metric units are selected After you have selected a measurement standard the software compiles and records workout information in the units of the measurement standard selected Changing to the alternate measurement standard after your workout has started will cause invalid data to be displayed For this reason change the measurement standard only after turning ON the treadmill Procedure 1 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker 2 With the Enter Your Weight banner scrolling press and hold the SPEED A and QUICK START keys simultaneousl
12. ame Remove the clevis pin from the top of the lift motor see Diagram 5 1 Diagram 5 1 Lift Motor Page 28 6 9 21 9 211 9 218 9 21Si Treadmill Remove the e rings and lift pins that secure the lift motor nut to the lift platform Remove and set aside the lift motor Replacing the Lift Motor 7 8 10 11 12 13 Calibrate the treadmill as described in procedure 4 1 of this appendix Line up the mounting holes at the top of the lift motor with the lift motor mounting holes on the treadmill frame While an assistant holds the lift motor in place position the clevis pin through the top of the lift motor and the treadmill frame push the hitch pin through the clevis pin Replace the e rings and lift pins that secure the lift motor nut to the lift platform Secure the ground wire to the lift motor ground frame connection Connect the lift motor wiring assembly to the lower PCA Check the operation of the treadmill as described in Section Three of this appendix then replace the hood as described in Procedure 5 1 of the Residential Treadmill Service Manual Page 29 9 21 9 211 9 218 9 21Si Treadmill Procedure 6 5 Replacing the PROM Anti static kits part number 20024 101 can be ordered from Precor 1 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
13. cal electrical codes when determining the appropriate wire size for a 20 amp circuit 2 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 ona 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 2 Ifan 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 24 9 21 9 211 9 218 9 21Si Treadmill Procedure 6 1 Replacing the Target Disk and Fan WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood Removing the Target Disk 1 2 Remove the hood Remove the fan from the motor shaft Push the new fan onto the motor shaft If you are installing a new motor on the treadmill push the fan onto the shaft of the new motor Replace the hood Page 25 9 21 9 211 9 218 9 21Si T
14. cuit 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 23 9 21 9 211 9 21S 9 21Si Treadmill 2 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 tr
15. e circuit breaker test Follow the instructions on the display to cause either a test trip of the treadmill circuit breaker or exit the diagnostics program Diagram 2 3 9 21i and 9 21Si Display SMART RATE INCLINE af CHANGE Page 8 9 21 9 211 9 218 9 21Si Treadmill Procedure 2 3 Displaying the Odometer prior to July 21 1997 This procedure allows you to display the number of miles or kilometers logged on the treadmill Procedure 1 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker 2 With the Enter Your Weight banner scrolling press the STOP key the SPEED W key and then the SPEED A key sequentially Note After you perform Step 2 the electronic console displays the number of miles or kilometers logged on the treadmill 3 Turn off the treadmill with the circuit breaker then unplug the treadmill from the wall outlet Page 9 9 21 9 211 9 218 9 21Si Treadmill Procedure 2 4 Displaying the Odometer after July 20 1997 The diagnostic program used prior to July 21 1997 and the diagnostic program used after July 20 1997 are essentially the same except that the key strokes used to access the programs are different Units built after July 20 1997 used the standard access codes The keys on the display are hypothetically numbered for 1 to 7 from left to right Therefore ENTER would be key 1 INCLINE v would be key 2 etc see Diagram 2 1 or on a 9 41Si INCLI
16. eadmill 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 amps If the A C wiring is under sized it must be replaced with wire capable of safely handling 20 amps Please refer to lo
17. eys are pressed Power Bits Mode Allows you to verify that the power bits number increments and decrements as the SPEED keys are pressed Note When the treadmill is in power bits mode and the SPEED A key is selected the treadmill speed will increase twice as fast as it does when the treadmill is in a normal operating mode Procedure 1 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker Note Diagram 2 1 illustrates the 9 21 Treadmill display The 9 21S Treadmill display is shown in Diagram 2 2 2 Press and hold the STOP SPEED V SPEED A and QUICK START keys simultaneously 3 The electronic console displays the version number of the PROM mounted on the upper PCA Record the PROM version number 4 Following the version number a horizontal line sweeps from top to bottom and then a vertical line sweeps from right to left Note The lines check the LED s mounted on the upper PCA If the lines are broken when they sweep across the electronic console replace the upper PCA as described in Procedure 5 2 of the Residential Treadmill Service Manual 5 After the LED test the electronic console displays the potentiometer increment number 6 Pressthe INCLINE keys Verify that the running bed inclines and declines as the INCLINE keys are pressed 7 Watch the electronic console When the potentiometer increment number is displayed on the electronic console enter power bit mode by starting
18. 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 may constitute a safety hazard to the treadmill operator 120 Vac Systems 120 Vac distribution systems utilize a single pole cir
19. ith the Enter Your Weight banner scrolling press keys RESET 5 6 7 1 sequentially The message Press A for MPH or V for KPH will scroll across the screen 3 Usethe SPEED or INCLINE keys to select the measurement standard The banner scrolling across the electronic console acknowledges the measurement standard selected 4 The message Press A for Distance or V for Time or Reset to Ask scrolls across the console IF THEN Distance is selected When Treadmill custom courses are selected the User will be prompted to enter workout distance Time is selected When Treadmill custom courses are selected the User will be prompted to enter workout time Ask is selected When Treadmill custom courses are selected the User will be prompted to enter either workout distance or time Note When the treadmill is turned off it will remember the last measurement standard selected Page 12 9 21 9 211 9 218 9 21Si Treadmill Procedure 2 7 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 When a problem occurs record the following information e Model and serial number e Software version number User and program number running when the problem occurred Adescripti
20. lectronic console Confirm that the running bed inclines and the incline display increments to 15 percent as the INCLINE A key is pressed 6 Press the INCLINE Wkey while viewing the electronic console Confirm that the running bed returns to a level position and the incline display decrements to zero percent as the INCLINE V key is pressed Turn off the treadmill with the circuit breaker then unplug the treadmill from the wall outlet Page 14 9 21 9 211 9 218 9 21Si Treadmill Procedure 4 1 Calibrating the Lift WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood Procedure 1 Remove the hood Remove the lift motor from the treadmill as described in Procedure 6 4 of this appendix Place the treadmill upright Lay the motor in front of the treadmill Plug the lift motor connector into the lower PCA Connect the lift motor ground to the treadmill frame Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker Enter the diagnostics program per procedure 2 1 or 2 2 as appropriate If you are servicing a treadmill built before April 1 1996 use the INCLINE keys to set the Calibration Number to 20 Set the Calibration Number to 22 if you are servicing a treadmill built after April 1 1996 Place 3 8 bolts into the mounting hole on the plastic nut and the top mounting hole of the lift motor Place a ruler next to both left or both righ
21. nd 500 mVdc Pin 7 of J4 STOP 0 Vdc and 500 mVdc Pin 8 of J4 SPEED DOWN 0 Vdc and 500 mVdc Pin 9 of J4 SPEED UP 0 Vdc and 500 mVdc Pin 10 of J4 QUICK START CHANGE 0 Vdc and 500 mVdc If the voltage readings match those listed in Tables 5 1 and 5 2 and one or more keys do not function replace the upper PCA If the voltage readings in Table 5 1 are incorrect disconnect the keypad cable from the key pad connector and repeat the voltage measurements in 5 1 If the voltage readings are now correct replace the display housing keypad If the voltage readings are still incorrect replace the upper PCA If the voltage readings in Table 5 1 are correct and one or more voltage readings in Table 5 2 are incorrect replace the display housing keypad Set the circuit breaker in the off position If necessary carefully re connect the keypad cable to the keypad connector Remove the ground lead of the wrist strap from the treadmill frame then remove the wrist strap from your arm Position the display enclosure on the display plate Install the screws that secure the display enclosure to the display plate Check the operation of the treadmill as described in Section Three of this appendix Page 18 9 21 9 211 9 218 9 21Si Treadmill Procedure 5 2 Troubleshooting the Optional Heart Rate System Note The 9 41S and 9 41Si treadmills are not equipped with heart rate as standard equipment Heart rate will be present only if the optional
22. nds of the lift platform shaft Slide the shaft away from the lift platform and treadmill frame 5 Remove the wheels from the lift platform Mount the wheels on the new lift platform Replacing the Lift Platform 6 With the treadmill still on its left side position the lift platform at its mounting position 7 Slide the lift platform shaft into the lift platform and treadmill frame 8 Replace the e rings on the ends of the lift platform shaft 9 Replace the e rings and lift pins that secure the lift motor nut to the lift platform 10 Return the treadmill to an upright position 11 Check the operation of the treadmill as described in Section Three of this appendix then replace the hood as described in Procedure 5 1 of the Residential Treadmill Service Manual Page 27 9 21 9 211 9 218 9 21Si Treadmill Procedure 6 4 Replacing the Lift Motor WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood Removing the Lift Motor 1 Remove the hood 2 Disconnect the lift motor wiring assembly from the lower PCA 3 Remove the ground wire from the lift motor ground stud on the treadmill frame Note Place a drop cloth under the treadmill to protect the flooring and to ensure that the treadmill handrails are not scratched or damaged 4 Place the treadmill on its right side 5 Remove the hitch pin from the clevis pin that holds the top of the lift motor to the treadmill fr
23. nt number is displayed on the electronic console enter power bit mode by starting the running belt Page 7 9 21 9 211 9 218 9 21Si Treadmill Note When the running belt is started the number of power bits will be displayed Power bits represent the amount of power applied to the drive motor Power bits are the product of selected speed and applied load 7 10 11 12 13 Press the SPEED A and V keys Verify that the power bits number increments and decrements as the SPEED keys are pressed Press the STOP key to exit the power bits mode and enter the heart rate mode If the heart rate option has been installed you may test the heart rate function using a chest strap transmitter or test transmitter Press the ENTER key to enter the error code log The error code log will display the last 10 errors that occurred Error 1 will be the most recent error and error 10 will be the oldest error If more than 10 errors occur the most recent error will be inserted in position 1 and all other errors will be pushed down one position The error that was in the 10th position will be lost If you wish to clear the error code log press the QUICK START and STOP keys simutaneously Press the ENTER key to exit the error code log and enter the key pad test Press each key one at a time the display will confirm the key that was pressed Press the INCLINEv and SPEED A keys simultaneously to exit the keypad test The next test is th
24. on of a What happened or failed to happen b The action taken by the user just before the problem occurred c Problem related information such as how far into the program the problem occurred the work level being used when the problem occurred etc e The frequency of occurrence Page 13 9 21 9 211 9 21S 9 21Si 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 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker 2 Adjust the speed of the running belt to 2 3 mph 3 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 Measure and log the AC input current under loaded and unloaded conditions c Press the CHANGE key while observing the LEDs on the electronic console Make sure that each LED lights as the information corresponding to that LED is displayed on the electronic console 4 Press the STOP key When the treadmill comes to a stop press the CHANGE key and view the electronic console as the treadmill scans time speed distance and percent 5 Press the INCLINE A key while viewing the e
25. readmill Procedure 6 2 Replacing the Speed Sensor WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood Removing the Speed Sensor 1 Remove the hood 2 Disconnect the speed sensor cable from the lower PCA 3 Remove the nut that secures the speed sensor to the speed sensor bracket Set aside the speed sensor Replacing the Speed Sensor 4 Position the speed sensor next to the speed sensor bracket Install the nut that retains the sensor to the bracket 5 Connect the speed sensor cable to the lower PCA 6 Inspect and adjust the gap between the speed sensor and the target as described in Procedure 3 4 of the Residential Treadmill Service Manual 7 Check the operation of the treadmill as described in Section Three of this appendix then replace the hood Page 26 9 21 9 211 9 218 9 21Si Treadmill Procedure 6 3 Replacing the Lift Platform WARNING Always turn off the circuit breaker and unplug the treadmill before you remove the treadmill hood Removing the Lift Platform 1 Remove the hood Note To avoid scratching or marring the treadmill put a drop cloth underneath the treadmill when you perform Step 2 2 Place the treadmill on its left side 3 Remove the e rings and lift pins that secure the lift motor nut to the lift platform Note It is not necessary to remove the lift motor when you remove the lift platform 4 Remove the e rings from the e
26. recor com Dealer Page 2 9 21 9 211 9 218 9 21Si Treadmill Technical Specifications PHYSICAL SPECIFICATIONS Length 67 inches 170 cm Width Handrails 28 5 inches 71 cm Base 25 inches 63 5 Height 44 inches 117 cm Running surface 51 inches by 17 inches 129 5 cm by 43 cm Motor 1 7 hp continuous duty 9 21 amp 9 21S 2 0 hp continuous duty 9 21i amp 9 21Si Speed 0 5 to 10 mph 0 8 to 16 kph 10 mph is equivalent to a 6 minute mile Incline 0 to 15 grade Power 50 60Hz 120v AC 20 Amps Weight 193 Ibs 87 kg Shipping weight 233 Ibs 105 kg ELECTRONIC SPECIFICATIONS 9 21 amp 9 21i Programs Manual Interval 1 minute rest 1 minute work Weight Loss 9 21S amp 9 21Si Programs Heart Rate Interactive Course Manual Interval 1 minute rest 1 minute work Weight Loss 6 Preprogrammed courses 3 Walk 3 Run 2 Custom courses 9 21 9 21i 9 21S amp 9 21Si Display Readouts Distance miles or kilometers Time Speed mph or kph Calories Incline Heart rate Scan Page 3 9 21 9 211 9 21S 9 21Si Treadmill Procedure 2 1 Accessing the Diagnostic Program prior to July 21 1997 The 9 21 9 21S diagnostic program cycles through the following modes Software Version Mode Displays the PROM version number LED Mode llluminates each of the LED s mounted on the upper PCA Lift Mode Allows you to verify that the lift calibration number increments and decrements as the INCLINE k
27. replaceable battery replace the battery If the HEART RATE indicator still does not blink as described in Step 4 THEN OTHERWISE Page 19 7 9 21 9 21i 9 21S 9 21Si Treadmill Continue with the next step The Heart Rate system is operating correctly There is no need to continue with this procedure Hold the Heart Rate Test Transmitter Precor part number 20045 101 near the display housing If the HEART RATE indicator on the electronic console blinks with the LED on the Smart Rate Test Generator THEN OTHERWISE The chest strap assembly is bad The heart rate receiver assembly is Wear a new chest strap assembly bad Replace the heart rate receiver as when you use the Heart Rate described in Procedure 5 4 of the System Residential Treadmill Service Manual Press ENTER to return to the User ID Page 20 9 21 9 211 9 21S 9 21Si Treadmill Procedure 5 3 Troubleshooting the Lift System System Description The lift system is powered by a 120 Vac lift motor that uses two independent motors windings one operates the motor in an upward direction and one operates the motor in a downward direction The motor contains a 10 KO or 1 KO potentiometer depending on manufacturer driven by the motor that indicates lift position AC power to operate the lift motor is provided by a pair of triac One triac provides power to the up winding of the lift motor and the other triac provides power to the down winding
28. t edges of the bolts Turn the plastic nut without turning the drive screw until the distance between the bolts is 4 00 inches 1 16 see Diagram 4 1 Diagram 4 1 Lift Motor Calibration Drive Screw Plastic Nut 4 0 1 16 Page 15 9 21 9 211 9 218 9 21Si Treadmill Note 1 16 is 1 2 of a revolution of the plastic nut The white plastic nut must not rotate while you are pressing the either of the INCLINE keys 9 Exit the diagnostics program 10 Turn off the treadmill with the circuit breaker then unplug the treadmill from the wall outlet Note When you perform the next step keep the white plastic nut in the same relative position to the drive screw If necessary though you may turn the drive screw 1 2 of a revolution 11 Mount the lift motor on the treadmill as described in Procedure 6 4 of this appendix 12 Check the operation of the treadmill as described in Section Three of this appendix Page 16 9 21 9 211 9 218 9 21Si 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 This troubleshooting procedure gives you the information you need to determine which of these components is malfunctioning Procedure 1 Set the circuit breaker in the off position WARNING Before continuing with this procedure review the Warning and Caution statements listed
29. ther than substituting a known good part They are lower PCA ribbon cable and upper PCA Replace only one part at a time If the new part does not correct the problem replace the original part 6 Ifyou have performed all of the above tests and the lift system is still not functioning call Precor Technical Support 7 Setthe treadmill circuit breaker in the off position Remove the F2 2 amp slow blow fuse from the lower PCA Measure the fuse with an ohmmeter The measurement should be 1 or less If the fuse is good re insert the fuse and skip to step 9 If the fuse is open c or significantly high replace the fuse Before operating the lift motor it is necessary to perform a continuity test on the lift motor Page 21 10 11 12 9 21 9 211 9 218 9 21Si Treadmill Remove the P2 connector from the lower board Using an ohmmeter measure between terminals 1 and 3 of P2 between terminals 1 and 2 of P2 and between terminals 2 and 3 of P2 The measurements should be approximately 14 50 14 50 and 29Q respectively If any of the measurements are significantly low or high replace the lift motor Re insert the P2 connector in the lower PCA Set the treadmill circuit breaker in the on position Using an AC voltmeter monitor the voltage between terminals 1 and 2 red and white wires of the P2 connector Enter the manual program and press the INCLINE A key The measurement should be approximately 120 Vac line voltage If
30. y until the Press A for MPH or V for KPH message scrolls across the screen 3 Use the SPEED A or SPEED V key to select the measurement standard Page 11 9 21 9 211 9 21S 9 21Si Treadmill Procedure 2 6 Selecting United States Standard or Metric Units after July 20 1997 The diagnostic program used prior to July 21 1997 and the diagnostic program used after July 20 1997 are essentially the same except that the key strokes used to access the programs are different Units built after July 20 1997 used the standard access codes The keys on the display are hypothetically numbered for 1 to 7 from left to right Therefore ENTER would be key 1 INCLINE v would be key 2 etc see Diagram 2 1 or on a 9 41Si INCLINE A would be key 1 INCLINE v would be key 2 etc see Diagram 2 2 Selecting United States standard units causes information to be displayed in feet miles and pounds Information is displayed in meters kilometers and kilograms if metric units are selected After you have selected a measurement standard the software compiles and records workout information in the units of the measurement standard selected Changing to the alternate measurement standard after your workout has started will cause invalid data to be displayed For this reason change the measurement standard only after turning ON the treadmill Procedure 1 Plug the power cord into the wall outlet then turn on the treadmill with the circuit breaker 2 W
Download Pdf Manuals
Related Search