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Precor 5.21i Service Manual

Elliptical fitness crosstrainer
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5.21i Elliptical Fitness Crosstrainer
5.21i Elliptical Fitness Crosstrainer
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.
© 2004 Precor Incorporated
Unauthorized Reproduction and Distribution Prohibited By Law
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  • Page 1 5.21i Elliptical Fitness Crosstrainer Warning: This service manual is for use by Precor trained service providers only. If you are not a Precor Trained Servicer, you must not attempt to service any Precor Product; Call your dealer for service. This document contains information required to perform the majority of troubleshooting, and replacement procedures required to repair and maintain this product.

  • Page 2: Section One - Things You Should Know

    Exercise caution when touching any wire or electrical component during EFX 5.21i operation. Caution statements are intended to prevent damage to the EFX 5.21i as a result of the current activity. Caution statements included in this manual are listed below: •...

  • Page 3: General Information

    5.21i Elliptical Fitness Crosstrainer • Do not set anything on the handlebars, display enclosure, or cover. Never place liquids on any part of the EFX 5.21i other than a water bottle in the water bottle holder during normal operation. •...

  • Page 4: Required Tools And Equipment

    5.21i Ellipitical Fitness Crosstrainer Required Tools and Equipment The following list is a summary of the tools and equipment required when you service Precor’s EFX 5.21i. TOOLS EQUIPMENT phillips and flat-head screwdrivers anti-static wrist strap (20024-101) digital multimeter standard and metric allen wrench sets...

  • Page 5: Procedure 2.1 - Accessing The Diagnostic Program

    • Brake (eddy current) Test Procedure Plug the power cord into the wall outlet, then turn on the EFX 5.21i with the on/off switch. Note: For the purpose of entering the key sequences to access the various diagnostic programs, the keypad keys are hypothetically numbered from 1 to 7 from left to right.
  • Page 6 5.21i Ellipitical Fitness Crosstrainer Watch the display as the LED test progresses. The test is programmed to display the following LED illumination sequence: The test name “DISPLAY TEST” will be scrolled. All of the L.E.D.s on the display will be illuminated.

  • Page 7: Procedure 2.2 - Accessing The Information Display

    Procedure 2.2 - Accessing the Information Display Procedure Plug the power cord into the wall outlet, then turn on the EFX 5.21i with the on/off switch. With the PRECOR EFX 5.21i banner displayed, press keys RESET,6,5, sequentially. The EFX 5.21i Information display cycles through the following displays:...
  • Page 8 5.21i Ellipitical Fitness Crosstrainer 16. Pressing and holding the QUICK START key for 2 seconds will cause the prompt CLEAR? to be displayed, holding the QUICK START for an additional 2 seconds will clear all existing entries from the error log. The display will confirm that the error log has been cleared by displaying OK.

  • Page 9: Procedure 2.3 - Accessing The Set User Parameters Display

    Procedure Plug the power cord into the wall outlet, then turn on the EFX 5.21i with the on/off switch. With the PRECOR EFX 5.21i banner displayed, press keys RESET,5,6,7,1, sequentially. The display name “SELECT UNITS” will be displayed for 2 seconds.

  • Page 10: Procedure 2.4 - Documenting Software Problems

    5.21i Ellipitical Fitness Crosstrainer Procedure 2.4 - Documenting Software Problems When a problem is found with either the software 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 you have recorded with the malfunctioning PROM or PCA when you ship it to Precor.

  • Page 11: Section Three - Preventive Maintenance

    Regular Preventive Maintenance (Owner) Cleanliness of the EFX 5.21i and its operating environment will keep maintenance problems and service calls to a minimum. Precor recommends that you perform the following preventive maintenance schedule.
  • Page 12 Resistance Level 20. Operate the EFX for another 2–3 minutes. If the resistance of the EFX 5.21i does not change or the EFX operation feels inconsistent with Resistance Levels 1 and 10, troubleshoot per Procedure 6.5.

  • Page 13: Procedure 5.1 - Measuring The Resistance Of An Eddy Current Magnet

    5.21i Elliptical Fitness Crosstrainer Procedure 5.1 - Measuring the Resistance of an Eddy Current Magnet Caution Remove power from the EFX before you measure magnet resistance. Procedure Set the on/off switch in the “off” position, then unplug the power cord from the wall outlet.
  • Page 14 5.21i Ellipitical Fitness Crosstrainer Diagram 5.2 - Eddy Current Magnet (serial code A998) Eddy Current Magnet Magnet Cable If the resistance measures significantly less than 90 Ω or significantly more than 110 Ω. THEN... OTHERWISE... Replace the magnet as described Reconnect the magnet wires, then in Procedure 7.13.

  • Page 15: Procedure 5.2 - Inspecting And Adjusting Belt Alignment And Tension

    5.21i Elliptical Fitness Crosstrainer Procedure 5.2 - Inspecting and Adjusting Belt Alignment and Tension Procedure Set the on/off switch in the “off” position, remove the A.C. line cord from the A.C. outlet. WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know.
  • Page 16 Tension Bolt 14. Place a belt gauge (Precor part # 20030-117 or equivalent) in the middle of the step up belt at the center of the belt span (see Diagram 5.4). Lay a straight edge along the length of the belt and beside the belt gauge.
  • Page 17 5.21i Elliptical Fitness Crosstrainer Diagram 5.4 - Measuring Belt Tension 15 lbs 1/4” 16. If the locking tabs on the right and left step up belt tension bolts have not been straightened, use pliers to bend the locking tabs out of the way so that the bolts can be turned.
  • Page 18 5.21i Ellipitical Fitness Crosstrainer 21. Using your finger, press in on the center of the lower span of the input belt. Compare the pressure required to deflect the input belt to the pressure required to deflect the step up belt.

  • Page 19: Procedure 5.3 - Calibrating The Lift Motor

    5.21i Elliptical Fitness Crosstrainer Procedure 5.3 - Calibrating the Lift Motor In order to calibrate the lift motor, it is necessary to disconnect the lift motor from the ramp assembly. Set the on/off switch in the “off” position. Remove the front cover per Procedure 7.1.
  • Page 20 5.21i Ellipitical Fitness Crosstrainer Set the on/off switch in the “off” position. Do not exit the diagnostic program in the normal manner. Exiting the diagnostic program will cause the lift to self center and invalidate the lift calibration just performed.

  • Page 21: Procedure 6.1 - Troubleshooting The Lower And Upper Interconnect Cable

    5.21i Elliptical Fitness Crosstrainer Procedure 6.1 - Troubleshooting the Lower and Upper Interconnect Cable Typical symptoms associated with a defective interconnect cable is either an error 30 or no power to the upper PCA. This procedure requires that you have a known good upper interconnect cable, lower interconnect cable and mid-point connector.
  • Page 22 5.21i Ellipitical Fitness Crosstrainer Remove the rear cover. Disconnect the lower interconnect cable from the lower PCA and the mid-point connector. Substitute a known good interconnect cable from the lower PCA to the mid-point connector. It is not necessary to route the test interconnect cable through the frame tube, for convenience route it externally.

  • Page 23: Procedure 6.2 - Troubleshooting The Keypad And Upper Pca

    5.21i Elliptical Fitness Crosstrainer Procedure 6.2 - Troubleshooting the Keypad and Upper PCA If the function keys on the electronic console are unresponsive, the problem may be either the upper PCA or keypad. The keys on this unit are touch sensitive keys. It is necessary to use the keypad diagnostics to troubleshoot the key functions.
  • Page 24 5.21i Ellipitical Fitness Crosstrainer Set the on/off switch in the “on” position. If a “error 5 (key depressed)” message is immediately displayed when the EFX is powered up, replace the upper PCA. If a “error 5 (key depressed)” message is not displayed when the EFX is powered up, replace the display housing front panel.

  • Page 25: Procedure 6.3 - Troubleshooting The Speed Sensor

    5.21i Elliptical Fitness Crosstrainer Procedure 6.3 - Troubleshooting the Speed Sensor Circuit Description The speed sensor is a reed switch. A magnet is mounted on the step up pulley. The magnet passes the speed sensor once per revolution. The output from the speed sensor is a 5 Vdc square wave, the frequency of which indicates the operating speed.
  • Page 26 5.21i Ellipitical Fitness Crosstrainer Diagram 6.4 - Speed Sensor (serial code A998) Step Up Pulley Magnet Speed Sensor Rotate the step up pulley so that the speed sensor magnet is not near the reed switch. Using a DC voltmeter, measure the voltage between terminal 1 and terminal 5 of J8 on the lower PCA.

  • Page 27: Procedure 6.4 - Troubleshooting The Eddy Current System

    They are lower PCA and upper PCA. Replace only one part at a time. If the new part does not correct the problem re-install the original part. If you have performed all of the above tests and there is still no resistance, call Precor Technical Support.
  • Page 28 5.21i Ellipitical Fitness Crosstrainer Set the on/off switch in the “on” position, enter the manual program and set the resistance at level 10. Using a DC voltmeter, check the voltage across the magnet. wires at the lower PCA The voltage should measure approximately 40 Vdc.

  • Page 29: Procedure 6.5 - Upper Display Does Not Illuminate

    5.21i Elliptical Fitness Crosstrainer Procedure 6.5 - Upper Display does not Illuminate Note: Serial codes F8 and SS are equipped with two fuses in the A.C. power module and two fuses on the lower PCA. Serial code A998 is equipped with two fuses in the A.C. power module and one fuse on the lower PCA.
  • Page 30 5.21i Ellipitical Fitness Crosstrainer 13. Plug the line cord into the wall outlet and set the on/off switch in the “on” position. Measure between terminals 1 and 8 of the data cable connector on the upper PCA with a DC voltmeter. See Diagram 6.5 or Diagram 6.6. The reading should be approximately 8.3 Vdc.
  • Page 31 5.21i Elliptical Fitness Crosstrainer Diagram 6.6 - Lower PCA (Serial code A998) Data Cable Connector Speed sensor Magnet Cable Connector Lift Fuse Lift Position Connector AC Wiring Lift Power Connector Page 31...

  • Page 32: Procedure 6.6 - Troubleshooting The Lift System

    5.21i Ellipitical Fitness Crosstrainer Procedure 6.6 - Troubleshooting the Lift System Note: The lift motor is disabled when the EFX is not being used. The speed sensor must detect motion in order for lift operation to be enabled. In the following procedures, when lift motor movement is being tested the stairarms must be in motion.
  • Page 33 5.21i Elliptical Fitness Crosstrainer Remove the lift power connector from the lower board. Using an ohmmeter, measure between terminals 1 and 2 (white and red) between terminals 1 and 3 (black and white) and between terminals 2 and 3 (red and black). The measurements should be approximately 14.7Ω, 14.3Ω...

  • Page 34: Procedure 7.1 - Replacing Or Removing A Rear Cover Section

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.1 - Replacing or Removing a Rear Cover Section Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 35 5.21i Elliptical Fitness Crosstrainer If you are removing the front cover section, the right, left and top cover sections must be removed first. Remove the four screws that fasten the frame cover to the frame (See Diagram 7.1). Remove two phillips screws that fasten the bottom of the front cover section to the frame.

  • Page 36: Procedure 7.2 - Replacing A Display Enclosure Or Upper Pca

    - Replacing a Display Enclosure or Upper PCA Procedure Anti-static kits (part number 20024-101) can be ordered from Precor. The keyboard is part of the display housing front panel. If the keyboard is not functioning properly, replace the display housing front panel.
  • Page 37 5.21i Elliptical Fitness Crosstrainer Diagram 7.3 - Display Housing Front Panel, Rear View Keypad Connector Position the replacement upper PCA at its mounting location on the display housing front panel (refer to Diagram 7.3). Replace and tighten the upper PCA mounting screws.

  • Page 38: Procedure 7.3 - Replacing A Lower Pca

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.3 - Replacing a Lower PCA Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 39 5.21i Elliptical Fitness Crosstrainer Carefully, rotate the lower PCA mounting bracket away from the front cover section and disconnect the interconnect cable from the lower PCA. Remove the lower PCA and mounting bracket from the unit. Remove the four screws that fasten the lower PCA to the mounting bracket and remove the lower PCA from the mounting bracket.
  • Page 40 15. Remove the ground lead of the wrist strap from the EFX frame, then remove the wrist strap from your arm. 16. Re-install the left and right rear cover sections per Procedure 7.1. Check the operation of the EFX 5.21i as described in Section Four. Page 40...

  • Page 41: Procedure 7.4 - Replacing A Lower Or Upper Interconnect Cable

    5.21i Elliptical Fitness Crosstrainer Procedure 7.4 - Replacing a Lower or Upper Interconnect Cable Procedure Note: Before you install a new interconnect cable, ensure that the interconnect cable is defective. Refer to Procedure 6.1. Set the on/off switch in the off position.
  • Page 42 5.21i Ellipitical Fitness Crosstrainer Securely tape one end of the replacement lower interconnect cable to the lower PCA end of the existing lower interconnect cable. Carefully draw the existing lower interconnect cable out of the front of the frame as you carefully feed the replacement cable into the access hole near the lower PCA.

  • Page 43: Procedure 7.5 - Replacing A Power Entry Module

    5.21i Elliptical Fitness Crosstrainer Procedure 7.5 - Replacing a Power Entry Module Procedure Note: The power entry module on this EFX is a multifunction unit. It functions as a power entry module, A.C. line fuse holder, on/off switch and A.C.line filter.
  • Page 44 5.21i Ellipitical Fitness Crosstrainer Set the replacement power entry module at it’s mounting position, secure the power entry module with the screws removed in step 4. Replace the wires removed in step 3. Connect the blue wire to terminal D, the brown wire to terminal A and the green wire to the ground terminal of the power entry module.

  • Page 45: Procedure 7.6 - Replacing A Crankarm Assembly

    5.21i Elliptical Fitness Crosstrainer Procedure 7.6 - Replacing a Crankarm Assembly Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 46 5.21i Ellipitical Fitness Crosstrainer Position the crankarm on the input pulley shaft. Thread and hand tighten the 14 mm. bolt into the input pulley shaft. Torque the nut to 300 in/lbs. Position the crankarm on the input pulley shaft. Thread and hand tighten the crankarm mounting bolt into the input pulley shaft.

  • Page 47: Procedure 7.7 - Replacing A Pillow Block Bearing

    5.21i Elliptical Fitness Crosstrainer Procedure 7.7 - Replacing a Pillow Block Bearing Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 48 5.21i Ellipitical Fitness Crosstrainer Diagram 7.9 - Pillow Block Bearings (serial codes F8 and SS) Input Pulley Mounting Nut Pillow Block Bearing Diagram 7.10 - Pillow Block Bearings (serial code A998) 10. Thread and hand tighten the pillow block mounting nuts onto the mounting studs or mounting bolts.
  • Page 49 5.21i Elliptical Fitness Crosstrainer 12. Tension the belts per Procedure 5.2. 13. Replace the crankarm(s) per Procedure 7.6. 14. Replace the eddy current magnet per Procedure 7.13. 15. Replace the stairarms per Procedure 7.17. Replace the front, top, left and right cover sections per Procedure 7.1.
  • Page 50 5.21i Ellipitical Fitness Crosstrainer Procedure 7.8 - Replacing an Input Drive Assembly Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 51 5.21i Elliptical Fitness Crosstrainer Slide the step up and input belts onto the input drive assembly as you set the input drive assembly in it’s mounting position in the EFX. Replace the magnet assembly per Procedure 7.13. 10. Complete the installation, alignment and tensioning per Procedure 7.7, steps 9 to 16.

  • Page 52: Procedure 7.9 - Replacing An Input Pulley Belt

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.9 - Replacing an Input Pulley Belt Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 53 5.21i Elliptical Fitness Crosstrainer Diagram 7.12 - Input Pulley Belt Input Pulley Belt Input Pulley 12. Slide the step up and input belts onto the input drive assembly as you set the input drive assembly in its mounting position in the drive unit.

  • Page 54: Procedure 7.10 - Replacing A Step-Up Pulley Belt

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.10 - Replacing a Step-Up Pulley Belt Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 55 5.21i Elliptical Fitness Crosstrainer Diagram 7.13 - Step Up Pulley Belt Step Up Pulley Belt Step Up Pulley Tension Bolt Tension Bolt 13. Slide the pillow block bearings onto the input pulley shaft. 14. Complete the installation, alignment and tensioning per Procedure 7.7, steps 9 to 16.

  • Page 56: Procedure 7.11 - Replacing A Step-Up Pulley Assembly

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.11 - Replacing a Step-Up Pulley Assembly Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.

  • Page 57: Procedure 7.12 - Replacing A Speed Sensor Assembly

    5.21i Elliptical Fitness Crosstrainer Procedure 7.12 - Replacing a Speed Sensor Assembly Procedure Set the on/off switch in the “off” position. WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know.
  • Page 58 5.21i Ellipitical Fitness Crosstrainer Reconnect the speed sensor cable to the lower PCA. Re-install the left and right cover sections as described in Procedure 7.1, then check the operation of the EFX as described in Section Four. Page 58...

  • Page 59: Procedure 7.13 - Replacing An Eddy Current Magnet Assembly

    5.21i Elliptical Fitness Crosstrainer Procedure 7.13 - Replacing an Eddy Current Magnet Assembly Procedure Set the on/off switch in the “off” position, then unplug the power cord from the wall outlet. WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know.
  • Page 60 5.21i Ellipitical Fitness Crosstrainer Position the magnet assembly at its mounting position so that the eddy current disk is centered between the magnet poles. Replace and hand tighten the magnet assembly mounting bolts. Torque the magnet assembly mounting bolts to 43 in/lbs.

  • Page 61: Procedure 7.14 - Replacing A Stairarm Pivot Block

    5.21i Elliptical Fitness Crosstrainer Procedure 7.14 - Replacing a Stairarm Pivot Block Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 62 5.21i Ellipitical Fitness Crosstrainer Slide the stairarm pivot block onto the crankarm pin and replace the retaining ring removed in step 5. Slide the stairarm onto the stairarm pivot block. Install and hand tighten the stairarm pivot block mounting hardware. Torque the stairarm pivot block mounting bolt to 15 ft./lbs.

  • Page 63: Procedure 7.15 - Replacing A Wheel Assembly

    5.21i Elliptical Fitness Crosstrainer Procedure 7.15 - Replacing a Wheel Assembly Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.

  • Page 64: Procedure 7.16 - Replacing A Stairarm Pedal

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.16 - Replacing a Stairarm Pedal Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.

  • Page 65: Procedure 7.17 - Replacing A Stairarm

    5.21i Elliptical Fitness Crosstrainer Procedure 7.17 - Replacing a Stairarm Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.

  • Page 66: Procedure 7.18 - Replacing A Ramp Assembly

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.18 - Replacing a Ramp Assembly Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 67 5.21i Elliptical Fitness Crosstrainer Diagram 7.21 - Upper Ramp Mounting Upper Ramp Mounting Bolts Rotate both stairarms forward and place them on the ramp tracks. Replace the left and right rear covers per Procedure 7.1. Page 67...

  • Page 68: Procedure 7.19 - Replacing A Handlebar

    5.21i Ellipitical Fitness Crosstrainer Procedure 7.19 - Replacing a Handlebar Set the on/off switch in the “off” position, then unplug the power cord from the wall outlet. Slide the lower handle bar boot up the handlebar to expose the lower handlebar mounting bolts.

  • Page 69: Procedure 7.20 - Replacing A Input Belt Tensioner

    5.21i Elliptical Fitness Crosstrainer Procedure 7.20 - Replacing a Input Belt Tensioner Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 70 5.21i Ellipitical Fitness Crosstrainer Procedure 7.21 - Replacing a Main Column Procedure Set the on/off switch in the off position. Remove the A.C. line cord from the A.C. outlet. Attach the anti-static wrist strap to your arm, then connect the ground lead of the wrist strap to the EFX frame.
  • Page 71 5.21i Elliptical Fitness Crosstrainer Remove both handlebars per Procedure 7.19, steps 2-5. 10. Remove the left and right frame tube per Procedure 7.22, steps 1-4. 11. Remove the two bolts and washers that fasten the bottom of the main column to the frame base.
  • Page 72 5.21i Ellipitical Fitness Crosstrainer Procedure 7.22 - Replacing a Frame Tube Procedure Set the on/off switch in the off position. Remove the two screws that fasten the cover near the middle of the main column. Remove the cover. Remove the four bolts and washers that fasten the lower end of the frame tube to the frame base.

  • Page 73: Procedure 7.23 - Replacing A Ramp Mounting Bracket

    5.21i Elliptical Fitness Crosstrainer Procedure 7.23 - Replacing a Ramp Mounting Bracket Warning: Care must be taken when work is being performed in the area of the stairarms. Pinch points exist between the stairarm and ramp and between the stairarm and crankarm, when the rear covers are removed.
  • Page 74 5.21i Ellipitical Fitness Crosstrainer Remove two bolts, four washers and two nuts that fasten the ramp to the front ramp support. Remove the ramp from the EFX. Remove the two bolts, wave washers and shims that fasten the ramp mounting bracket to the frame.
  • Page 75 5.21i Elliptical Fitness Crosstrainer Procedure 7.24 - Replacing a Rear Cover Support Procedure Set the on/off switch in the off position. Remove the A.C. line cord from the A.C. outlet and from the power entry module. Remove the top, left and right cover sections per Procedure 7.1.
  • Page 76 5.21i Ellipitical Fitness Crosstrainer Replace the top, left and right cover sections per Procedure 7.1. 10. Insert the A.C. line cord in the power entry module and the A.C. outlet. 11. Set the on/off switch in the on position and test the EFX per Section Four.
  • Page 77 5.21i Elliptical Fitness Crosstrainer Procedure 7.25 - Replacing a Power Entry Module Fuse Procedure Set the on/off switch in the off position. Remove the A.C. line cord from the A.C. outlet and from the power entry module. Using a thin bladed screwdriver, carefully pry the fuse access door open (See Diagram 7.28 or Diagram 7.29).
  • Page 78 5.21i Ellipitical Fitness Crosstrainer Diagram 7.29 - Power Entry Module Fuse (serial code A998) Power Entry Module Fuse Fuse Module Set the on/off switch in the on position and test the EFX per Section Four. Page 78...

  • Page 79: Procedure 7.26 - Replacing A Lift Motor

    5.21i Elliptical Fitness Crosstrainer Procedure 7.26 - Replacing a Lift Motor Set the on/off switch in the “on” position. Press the QUICK START, while striding on the unit, raise the incline to level 17. Set the on/off switch in the “off” position. Remove the A.C. line cord from the A.C. outlet and from the power entry module.
  • Page 80 5.21i Ellipitical Fitness Crosstrainer Remove the hitch pin and clevis pin from the lower end of the lift motor and remove the lift motor from the unit. 10. Thread the lift motor yoke onto the replacement lift motor. Insert the retaining bolt, removed in step 7, into the replacement lift motor and secure it with the retaining nut.

  • Page 81: Procedure 7.27 - Replacing The Prom

    5.21i Elliptical Fitness Crosstrainer Procedure 7.27 - Replacing the PROM Anti-static kits (part number 20024-101) can be ordered from Precor. The PROM and the associated printed circuit assembly (PCA) are static sensitive. Anti- static devices must be used and all anti-static precautions must be followed during this procedure.

  • Page 82: Power Entry Module

    5.21i Ellipitical Fitness Crosstrainer Wiring Diagram 8.1 - 5.21i Power Entry Module J1-2,5,8 Upper J1-1,4,7 J1-6 Lower J1-3 Fuse F1 = 2 amp Fuse F2 = 2 amp Mid-Point Connector J4-1 P4-1 J4-2 P4-2 P4-3 J4-3 Lift Motor J6-1 P6-1...
  • Page 83 5.21i Elliptical Fitness Crosstrainer Block Diagram 8.2 - 5.21i Page 83...

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