Precor C556 Service Manual
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Precor C556 Service Manual

Precor C556 Service Manual

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C556, C556i Navy Self Powered Elliptical Fitness
C556, C556i Navy 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 C556, C556i Navy 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.

  • Page 2: Section One - Things You Should Know

    C556, C556i Navy Self Powered Elliptical Fitness Section One - Things You Should Know Right, Left, Front, and Back Conventions In this manual, right, left, front, and back are from the perspective of a user standing on the EFX, facing the display enclosure.
  • Page 3 C556, C556i Navy Self Powered Elliptical Fitness • Exercise caution when touching any wire or electrical component during EFX operation. • A pinching hazard exists when the unit is operated by turning the crankarms by hand. It is possible to seriously pinch a finger between the crankarm and stairarm. The stairarms should be removed before operating the crankarms by hand.

  • Page 4: General Information

    C556, C556i Navy Self Powered Elliptical Fitness General Information For the latest exploded view, part number and part pricing information, visit the Precor dealer website at “www.precor.com/connection”. Tools Required Multimeter Allen wrench set Anti-static kit Screwdriver set 4” - 6” gear puller 7/16”...

  • Page 5: Section Two - Preventive Maintenance

    Regular Preventive Maintenance (Owner) Cleanliness of the EFX and its operating environment will keep maintenance problems and service calls to a minimum. Precor recommends that you perform the following preventive maintenance schedule. After Each Use •...

  • Page 6: Quarterly Maintenance

    C556, C556i Navy Self Powered Elliptical Fitness Quarterly Maintenance Remove the rear covers. Check the step up and input belt alignment and tension as in Procedure 5.3. Replace the rear cover. On-Site Preventive Maintenance (Service Technician) When you are called to service a EFX, perform these preventive maintenance activities: •...

  • Page 7: Procedure 3.1 - Software Access Codes

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 3.1 - Software Access Codes The C556 Navy and C556i Navy use the standard access codes to provide access to the various software features. In using the standardized access codes the keys are hypothetically numbered left to right with key #1 on the far left and key #7 on the far right.

  • Page 8: Procedure 3.2 - Accessing The Diagnostic Program

    The message HEART RATE TEST will be displayed followed by the unfiltered (U), filtered (F) and polar (P) heart rate readings if the heart rate option is installed in the C556 and a chest strap transmitter or a test transmitter is being used. If the heart rate option is not installed in the C556, the message NO HEART RATE RECEIVER will be displayed instead of the heart rate readings.

  • Page 9: Procedure 3.3 - Displaying The Odometer

    The message TOTAL STRIDES will be displayed followed by the total number of strides logged on the C556. Press the ENTER key to advance to hour meter. The message HOUR METER will be displayed followed by the total number of hours that the EFX has been in use.

  • Page 10: Procedure 3.4 - Club Settings

    Procedure 3.4 - Club Settings Start pedalling and continue to pedal as you perform step 2. With the PRECOR banner scrolling, press keys RESET,5,6,5,1,5,6,5, sequentially. The message SET CLUB PARAMETERS will be displayed for a few seconds. The message SELECT LANGUAGE will be displayed followed by the currently selected keys to select the language preference.

  • Page 11: Procedure 3.5 - Documenting Software Problems

    If you isolated the problem to either the PROM, upper PCA, or lower PCA, include the information you recorded with the malfunctioning PROM or PCA when you ship it to Precor. When a problem occurs, record the following information: •...
  • Page 12 C556, C556i Navy Self Powered Elliptical Fitness Section Four - Checking EFX Operation This section provides you with a quick method of checking EFX operation. Check the operation of the EFX at the end of most maintenance procedures. Procedure Start striding on the EFX or plug the optional external power supply (when available) into the EFX and the AC outlet.

  • Page 13: Procedure 5.1 - Measuring The Resistance Of A Generator (C556 Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 5.1 - Measuring the Resistance of a Generator (C556 Navy, only) Caution Remove power from the EFX before you measure generator resistance. Procedure Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA.

  • Page 14: Procedure 5.2 - Measuring The Resistance Of A Generator (C556I Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 5.2 - Measuring the Resistance of a Generator (C556i Navy, only) Caution Remove power from the EFX before you measure magnet resistance. Procedure Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA.
  • Page 15 C556, C556i Navy Self Powered Elliptical Fitness Replace the generator per Procedure 7.17. Reconnect the intermediate cable removed in step 5 to the replacement generator and the lower PCA. Reconnect the red battery lead to terminal M6 of the lower PCA.

  • Page 16: Procedure 5.3 - Inspecting And Adjusting Belt Tension

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 5.3 - Inspecting and Adjusting Belt Tension Procedure Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. If you are only inspecting the generator belt tension, skip to step 7.
  • Page 17 C556, C556i Navy Self Powered Elliptical Fitness The belt gauge should read 100 lbs. If the belt tension is significantly high or low the belt tension may be adjusted using the adjustment bolts shown in Diagram 5.2. To adjust the belt tension first straighten the locking tabs on both bolts.
  • Page 18 C556, C556i Navy Self Powered Elliptical Fitness If either the input pulley belt or the generator belt is being replaced with a new belt, the belt tension should be set 20 lbs. higher than the previous readings. Therefore a new input pulley belt should be tensioned to 120 lbs.

  • Page 19: Procedure 6.1 - Troubleshooting The Lower And Upper Interconnect Cable

    C556, C556i Navy Self Powered Elliptical Fitness 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 20 C556, C556i Navy Self Powered Elliptical Fitness 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 21: Procedure 6.2 - Troubleshooting The Keypad And Upper Pca

    C556, C556i Navy Self Powered Elliptical Fitness 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 22 C556, C556i Navy Self Powered Elliptical Fitness 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 23: Procedure 6.3 - Upper Display Does Not Illuminate (C556 Navy, Only)

    Vdc, the AC system must be inspected by an electrician. Troubleshoot the generator per Procedure 6.5 (C556 Navy) or Procedure 6.6 (C556i Navy). If the generator was found to be good, the problem will be in either the lower PCA, upper PCA or the upper to lower PCA interconnect cables.
  • Page 24 C556, C556i Navy Self Powered Elliptical Fitness Diagram 6.3 - Partial View of Lower PCA J2 Connector TP20 10. Troubleshoot the upper to lower PCA interconnect cables per Procedure 6.1. 11. If the upper to lower interconnect cables are found to be good, replace the upper PCA.

  • Page 25: Procedure 6.4 - Upper Display Does Not Illuminate (C556I Navy, Only)

    Vdc, the AC system must be inspected by an electrician. Troubleshoot the generator per Procedure 6.5 (C556 Navy) or procedure 6.6 (C556i Navy). If the generator was found to be good, the problem will be in either the lower PCA, upper PCA or the upper to lower PCA interconnect cables.
  • Page 26 C556, C556i Navy Self Powered Elliptical Fitness Diagram 6.4 - Partial View of Lower PCA DGND, TP14 PROM +5D, TP13 DS1 LED J2 Connector 10. Troubleshoot the upper to lower PCA interconnect cables per Procedure 6.1. 11. If the upper to lower interconnect cables are found to be good, replace the upper PCA.

  • Page 27: Procedure 6.5 - Troubleshooting The Generator (C556 Navy)

    Because of the danger of working on the unit while it is in motion using the optional external power supply is strongly recommended. Perform the generator resistance test per Procedure 5.1 (C556 Navy) or Procedure 5.2 (C556i Navy). If any of the resistance measurements are significantly high or significantly low, replace the generator.

  • Page 28: Procedure 6.6 - Troubleshooting The Generator (C556I Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 6.6 - Troubleshooting the Generator (C556i Navy, only) The generator performs three functions in the EFX. First, by controlling the amount of electrical load applied to the generator, the user’s pedalling resistance is controlled. Second, the generator is used to charge the EFX’s internal battery.

  • Page 29: Procedure 7.1 - Replacing The Display Enclosure Or Upper Pca

    Procedure 7.1 - Replacing the Display Enclosure or Upper PCA 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 30: Keypad Connector

    C556, C556i Navy Self Powered Elliptical Fitness Diagram 7.1 - Display Housing Front Panel, Rear View Upper PCA J5 Connector Keypad Connector Keypad Position the upper PCA at its mounting location on the display housing front panel (refer to Diagram 7.1). Replace and tighten the upper PCA mounting screws.
  • Page 31 C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.2 - Replacing the Lower PCA C556 Navy, only) Removing the Lower PCA Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know.
  • Page 32 C556, C556i Navy Self Powered Elliptical Fitness Replacing the Lower PCA Position the replacement lower PCA at its mounting position and fasten the lower PCA with the four screws removed in step 5. Reconnect the lower PCA cables and wiring as follows. Connect the interconnect cable to connector J2.

  • Page 33: Procedure 7.3 - Replacing The Lower Pca (C556I Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.3 - Replacing the Lower PCA (C556i Navy, only) Removing the Lower PCA Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know.
  • Page 34 C556, C556i Navy Self Powered Elliptical Fitness Replacing the Lower PCA Position the replacement lower PCA at its mounting position and fasten the lower PCA with the four screws removed in step 5. Reconnect the lower PCA cables and wiring as follows. Connect the interconnect cable to connector J2.

  • Page 35: Procedure 7.4 - Replacing A Lower Or Upper Interconnect Cable

    C556, C556i Navy Self Powered Elliptical Fitness 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. Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA.
  • Page 36 C556, C556i Navy Self Powered Elliptical Fitness 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 37: Procedure 7.5 - Replacing A Crankarm Assembly

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.5 - Replacing a Crankarm Assembly Removing a Crankarm Assembly WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know. It is only necessary to remove the right or left side of the rear cover to access the crankarm being replaced.
  • Page 38 C556, C556i Navy Self Powered Elliptical Fitness Replacing a Crank Arm Assembly Clean the crankarm mounting bolt threads and the input pulley shaft threads with an alcohol swab. Allow them to dry and apply blue loctite to the crankarm mounting bolt threads.

  • Page 39: Procedure 7.6 - Replacing The Input Pulley Belt

    Procedure 7.8, steps 8 to 12. 11. Replace the crankarm assemblies per Procedure 7.5, steps 6 to10. 12. Replace the stairarm assemblies per Procedure 7.12 (C556 Navy) or Procedure 7.13 (C556i Navy). 13. Tension both belts per Procedure 5.3. Note the differences between tensioning a new belt and a existing (used) belt.

  • Page 40: Procedure 7.7 - Replacing The Generator Pulley Belt

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.7 - Replacing the Generator Pulley Belt WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know. Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA.
  • Page 41 C556, C556i Navy Self Powered Elliptical Fitness 17. Tension both belts per Procedure 5.3. Note the differences between tensioning a new belt and a existing (used) belt. 18. Replace the red battery lead removed in step 1 and check unit operation as described in Section Four.

  • Page 42: Procedure 7.8 - Replacing The Input Pulley Assembly

    Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. Remove the stairarm assemblies as described in Procedure 7.12 (C556 Navy) or Procedure 7.13 (C556i Navy). Remove the crankarm assemblies as described in Procedure 7.5, steps 2 to 5.
  • Page 43 C556, C556i Navy Self Powered Elliptical Fitness Remove the input pulley assembly. Slide input pulley belt off of the input pulley assembly. Hold the replacement input pulley assembly at it’s mounting position and slide the input belt over and past the pillow block bearing and onto the input pulley assembly.

  • Page 44: Procedure 7.9 - Replacing The Step-Up Pulley Assembly

    Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. Remove the stairarm assemblies as described in Procedure 7.12 (C556 Navy) or Procedure 7.13 (C556i Navy). Remove the crankarm assemblies as described in Procedure 7.5, steps 2 to 5.

  • Page 45: Procedure 7.10 - Replacing A Wheel Assembly

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.10 - Replacing a Wheel Assembly Procedure On February 2, 2004 the wheel assembly was modified to a wheel assembly utilizing larger bearings and a larger mounting bolts. If the wheel being replaced has large (5/16-18) mounting bolts, skip to step 7.
  • Page 46 C556, C556i Navy Self Powered Elliptical Fitness Thoroughly test the operation of the wheel assemblies. Remove the two wheel axle bolts from the wheel. Discard the bolts and the wheel. Replacement wheel mounting bolts are furnished with the replacement wheel.

  • Page 47: Procedure 7.11 - Replacing A Stairarm Pedal

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.11 - Replacing a Stairarm Pedal Loosen and remove the two bolts that fasten the stairarm pedal onto the stairarm. Remove the stairarm pedal from the stairarm. Set the replacement stairarm pedal at it’s mounting position on the stairarm.

  • Page 48: Procedure 7.12 - Replacing A Stairarm (C556 Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.12 - Replacing a Stairarm (C556 Navy, only) Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. Remove the three bolts that fasten the pivot arm connector to the stairarm. See Diagram 7.7.
  • Page 49 C556, C556i Navy Self Powered Elliptical Fitness assembly from the stairarm. 10. Install the wheel assembly on the replacement stairarm. Install and hand tighten the four the four screws removed in step 9. Torque the screws to 70 inch pounds.

  • Page 50: Procedure 7.13 - Replacing A Stairarm (C556I Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.13 - Replacing a Stairarm (C556i Navy, only) Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. Remove the stairarm pedal per Procedure 7.11.
  • Page 51 C556, C556i Navy Self Powered Elliptical Fitness 10. Slide the large plastic spacer onto the stairarm peg. Slide the spacer into the bushing in the handlebar linkage and place a washer on each side of the spacer. Set the handlebar linkage at its mounting position and fasten it with the bolt removed in step 3.

  • Page 52: Procedure 7.13 - Replacing A Ramp Assembly

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.13 - Replacing a Ramp Assembly Procedure. Remove the three bolts that fasten each pivot arm connector to the stairarm. See Diagram 7.6. Rotate both stairarms to the rear of the unit.
  • Page 53 C556, C556i Navy Self Powered Elliptical Fitness Remove the ramp from the EFX. Slide the ramp end cap into the ramp assembly. Fasten the ramp end cap with the screws removed in step 3. Set the ramp assembly at it’s mounting position. Hand start the rear mounting bolts and the two front bottom mounting bolts.

  • Page 54: Procedure 7.14 - Replacing A Handlebar

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.14 - Replacing a Handlebar Procedure Set the on/off switch in the off position. Remove the bolt that fastens the lower end of the handlebar to the secondary link. Remove three bolts and washers that fasten the handlebar to the upper pivot.
  • Page 55 C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.15 - Replacing a Stairarm Connector C556 Navy, only) WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know. Remove the three bolts that fasten the pivot arm connector to the stairarm. See Diagram 7.11.

  • Page 56: Procedure 7.15 - Replacing A Lower Pivot Arm (C556 Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.15 - Replacing a Lower Pivot Arm (C556 Navy, only) WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know. Remove the retaining ring that fastens the lower pivot arm to the stairarm connector. See Diagram 7.11.
  • Page 57 C556, C556i Navy Self Powered Elliptical Fitness Align the lower pivot arm with the handlebar and replace the bolt removed in step 2. Torque the bolts to 156 inch pounds. Page 57...

  • Page 58: Procedure 7.16 - Replacing Handlebar Linkage (C556I Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.16 - Replacing Handlebar Linkage (C556i Navy, only) WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know. Remove the plastic cap from the stairarm end of the handlebar linkage with a flat bladed screwdriver.

  • Page 59: Procedure 7.17 - Replacing An Upper Pivot Arm

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.17 - Replacing an Upper Pivot Arm WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know. Remove the handlebar. Remove the bearing shaft from the upper end of the upper pivot arm. The bearing shaft will be very tight, a long handled socket wrench with a 7/16”...

  • Page 60: Procedure 7.18 - Replacing A Main Column

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.18 - Replacing a Main Column Procedure Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. Attach the anti-static wrist strap to your arm, then connect the ground lead of the wrist strap to the EFX frame.
  • Page 61 C556, C556i Navy Self Powered Elliptical Fitness Unthread the right hand upper pivot from the main column with a 7/16” allen wrench. A 7/16” hex key bit that fits your torque wrench will be required in step 16. Rotate the handlebar with upper pivot forward until it rests on the floor.

  • Page 62: Procedure 7.19 - Replace The Rear Cover

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.19 - Replace the Rear Cover The rear cover is a four piece cover; front, top, left and right sections. If the front cover section is being removed, the frame cover must also be removed (See Diagram 7.14).
  • Page 63 C556, C556i Navy Self Powered Elliptical Fitness Diagram 7.15 - Top Cover Section (with right & left cover sections removed) Top Cover Section Mounting Screw Front Cover Frame Section Upright If all four cover sections have been removed, first replace the frame cover and front cover section, then the top cover section and then the left and right cover sections as described below.

  • Page 64: Procedure 7.20 - Replacing A Load Resistor

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.20 - Replacing a Load Resistor Warning When the EFX is operated the load resistors get very hot. Be sure to allow the load resistors enough time to cool before continuing with this procedure.
  • Page 65 C556, C556i Navy Self Powered Elliptical Fitness frame upright with the screws removed in step 2. Route the load resistor wires into the slots at the top of the frame upright. This will keep the wires away from all moving parts, such as the stairarms.

  • Page 66: Procedure 7.21 - Replacing A Generator (C556 Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.21 - Replacing a Generator (C556 Navy, only) WARNING When the unit is used, stairarms are in motion or the generator is rotated by any means, the generator will produce potentially hazardous voltages even when the battery is disconnected.
  • Page 67 C556, C556i Navy Self Powered Elliptical Fitness When the generator belt tension is correct, torque the four generator mounting bolts to 150 inch pounds. Securely tighten the forward nut on the adjustment bolt. Reconnect the red battery lead removed in step 1 and replace the rear cover.

  • Page 68: Procedure 7.22 - Replacing A Generator (C556I Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.22 - Replacing a Generator (C556i Navy, only) WARNING When the unit is used, stairarms are in motion or the generator is rotated by any means, the generator will produce potentially hazardous voltages even when the battery is disconnected.
  • Page 69 C556, C556i Navy Self Powered Elliptical Fitness Diagram 7.19 - Generator Bearing Clamp Bearing Clamp Bearing Clamp Mounting Screw 10. Replace and tighten the three generator mounting screws removed in step 9. Set the bearing clamp in its mounting position, replace and tighten the two bearing clamp mounting screws removed in step 9.

  • Page 70: Procedure 7.23 - Replacing A Battery (C556 Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.23 - Replacing a Battery (C556 Navy, only) Remove the rear cover Disconnect the red battery lead from terminal M6 of the lower PCA and the black battery lead from M7 of the lower PCA. See Diagram 7.20.
  • Page 71 C556, C556i Navy Self Powered Elliptical Fitness Diagram 7.21 - Battery Wiring Red Wire Red Dot Positive Terminal Slide the replacement battery into the battery bracket with the battery terminals nearest to the open end of the battery bracket. Fasten the lower PCA and battery assembly to the frame upright with the screws removed in step 4.

  • Page 72: Procedure 7.24 - Replacing A Battery (C556I Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.24 - Replacing a Battery (C556i Navy, only) Remove the entire rear cover, including the front section of the cover. Disconnect the red battery lead from terminal M6 of the lower PCA and the black battery lead from M7 of the lower PCA of the lower PCA.
  • Page 73 C556, C556i Navy Self Powered Elliptical Fitness Diagram 7.23 - Battery Bracket, Front Retaining Bracket Side Bracket Front Retaining Bracket Mounting Remove the nut fastens the front battery retaining bracket. Refer to Diagram 7.23. Carefully, slide the battery out of the battery bracket.

  • Page 74: Procedure 7.25 - Replacing A Power Input Jack Assembly

    Remove the rear cover and disconnect the red battery lead from terminal M6 of the lower PCA. Disconnect the J4 connector from the lower PCA. See Diagram 7.24 (C556 Navy) or Diagram 7.21 (C556i Navy). Diagram 7.24 - Power Input Jack Mounting...

  • Page 75: Procedure 7.26 - Replacing A Frame Tube

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.26 - Replacing a Frame Tube Procedure 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 76: Procedure 7.27 - Replacing A Ramp Support

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.27 - Replacing a Ramp Support 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 77 C556, C556i Navy Self Powered Elliptical Fitness 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 at the lower end of the ramp support, remove the ramp support.

  • Page 78: Procedure 7.28 - Replacing A Ramp Mounting Bracket

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.28 - 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 79 C556, C556i Navy Self Powered Elliptical Fitness Remove the ramp from the EFX. Remove the two bolts, wave washers and shims that fasten the ramp mounting bracket to the frame. Remove the ramp mounting bracket. Set the replacement ramp mounting bracket at its mounting position. Fasten the ramp mounting bracket with the hardware removed in step 8, slide the wave washer onto the bolt and then the shim.

  • Page 80: Procedure 7.29 - Replacing A Stairarm Pivot Block (C556 Navy, Only)

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.29 - Replacing a Stairarm Pivot Block (C556 Navy, only) 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 81 C556, C556i Navy Self Powered Elliptical Fitness Slide the stairarm pivot block onto the crankarm pin and replace the retaining ring removed in step 4. Slide the stairarm onto the stairarm pivot block. Install and hand tighten the stairarm pivot block mounting hardware.

  • Page 82: Procedure 7.30 - Replacing The Prom

    C556, C556i Navy Self Powered Elliptical Fitness Procedure 7.30 - 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 83: Wiring Diagram 8.1 - C556 Navy Self Powered

    C556, C556i Navy Self Powered Elliptical Fitness Wiring Diagram 8.1 - C556 Navy Self Powered 20 Ohm, 300W Load Resistor Page 83...

  • Page 84: Block Diagram 8.2 - C556 Navy Self Powered

    C556, C556i Navy Self Powered Elliptical Fitness Block Diagram 8.2 - C556 Navy Self Powered Page 84...

  • Page 85: Wiring Diagram 8.3 - C556I Navy Self Powered

    C556, C556i Navy Self Powered Elliptical Fitness Wiring Diagram 8.3 - C556i Navy Self Powered Jack Battery J1-5 J1-6 J1-7 Page 85...

  • Page 86: Block Diagram 8.4 - C556I Navy Self Powered Efx

    C556, C556i Navy Self Powered Elliptical Fitness Block Diagram 8.4 - C556i Navy Self Powered EFX Page 86...

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