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1. C556 Elliptical Fitness Crosstrainerl 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 Slide the replacement stairarm onto the crankarm Replace the retaining clip removed in step 4 Set the pivot arm connector at it s mounting position on the stairarm Replace and torque the three pivot arm connector bolts to 125 inch pounds Replace the rear cover Page 59 C556 Elliptical Fitness Crosstrainer Procedure 7 18 Replacing a Ramp Assembly Procedure 5 Set the on off switch in the off position then unplug the power cord from the wall outlet Remove the three bolts that fasten each pivot arm connector to the stairarm See Diagram 7 9 Remove the rear cover and rotate both stairarms to the rear of the unit Remove the four screws that fasten the ramp end cap to the ramp assembly See Diagram 7 13 Slide the ramp end cap out of the ramp assembly and rotate the ramp assembly toward the rear of the unit Remove six rear ramp mounting bolts 3 each side Diagram 7 12 Rear Ramp Mounting Mounting Bolt Remove the two mounting bolts from the front bottom of the ramp assembly Page 60 C556 Elliptical Fitness Crosstrainerl Diagram 7 13 Front Ramp Mounting Ramp End Cap Mounting Bolt 7 Remove the ramp from the EFX 8 Slide the ramp end cap into the ramp assembly Fasten the ramp e
2. 2 Remove the rear cover 3 Remove the stairarm assemblies as described in Procedure 7 17 4 Remove the crankarm assemblies as described in Procedure 7 8 5 Remove the magnet assembly as described in Procedure 7 14 6 Remove the input drive assembly per Procedure 7 11 steps 6 9 7 Carefully lay the EFX on it s side Remove the bolts that retain mounting plate for the input module and on off switch Swing the mounting plate away from the drive unit 8 Remove the left and right tension bolts locking tabs and brackets Slide the step up pulley assembly with both the step up and input belts out of the drive unit 9 Remove the step up pulley belt Set the replacement step up pulley belt in it s mounting position on the step up pulley assembly 10 Set the step up pulley assembly with the step up and input belt at it s mounting position in the drive unit Replace the tensioning bolts locking tabs and brackets removed in step 8 Thread the left and right tension bolts into the step up pulley shaft 11 Complete the installation per Procedure 7 11 steps 10 17 Page 46 C556 Elliptical Fitness Crosstrainerl Procedure 7 11 Replacing the Input Drive Assembly 1 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 2 Remove the rear cover
3. WARNING Before continuing with this procedure review the Warning and Caution statements listed in Section One Things You Should Know 2 Remove the rear cover 3 Remove the stairarm assembly as described in Procedure 7 16 Note Notice the position of the two crank arms When the crankarms are replaced they must be positioned so that they are 180 degrees opposing 4 Remove the 14 mm bolt that secures the crankarm to the input pulley shaft It will be necessary use a Pitman arm puller or 4 to 6 gear puller to remove the crankarm Do not use a hammer or mallet to remove the crankarm 5 If you are removing both crank arm assemblies repeat Steps 3 and 4 for the second crankarm assembly Diagram 7 5 Crankarm 14 mm Bolt Crankarm Page 43 C556 Elliptical Fitness Crosstrainer The crankarm removed from the right hand side has a magnet in a recess on the lower backside of the crankarm The magnet is held in the crankarm by it s magnetism Remove the magnet either by prying it out with a thin bladed screwdriver or by placing a heavy piece of steel near the magnet and allowing the it to adhere to the heavy piece of steel Replacing a Crank Arm Assembly 7 10 11 12 13 14 15 Place the magnet removed in step 6 in the crankarm that will be mounted on the right hand side of the EFX Clean the crankarm mounting bolt threads and the input pulley shaft threads with an alcohol swab Allow th
4. 7 Ifthe resistance is greater than normal the cause could be mechanical rather than electrical Check all moving parts in the drive section and stairarms for worn parts that could be binding Replace the appropriate parts 8 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 The voltage should measure approximately 29 5 Vdc Page 26 C556 Elliptical Fitness Crosstrainerl If the voltage is still significantly high or low 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 resistances are still incorrect call Precor Technical Support Page 27 C556 Elliptical Fitness Crosstrainer Procedure 6 6 Troubleshooting Hand Held Heart Rate Circuit Description The hand held heart rate system is actually a dual system that is it can accept a heart rate signal from either the hand held heart rate contacts on the unit s handlebar or from a Polar heart rate chest strap transmitter Refer to Diagram 6 4 and verify that no jumpers are equipped on J13 J14 J15 or J16 Also verify that there is a jumper equipped on the internal
5. Loosen the tension adjustment bolt to remove tension from the input belt See Diagram 7 15 Diagram 7 15 Stub Tensioner Mounting Tension Adjustment Bolt Stub Tensioner Mounting Nut 4 Remove the stub tensioner mounting nut and remove the stub tensioner from the drive unit 5 Loosely mount the replacement stub tensioner in its mounting position 6 Complete the installation drive belt alignment and tensioning per Procedure 5 3 Page 63 C556 Elliptical Fitness Crosstrainer Procedure 7 21 Replacing a Pivot Arm Connector 1 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 2 Remove the three bolts that fasten the pivot arm connector to the stairarm See Diagram 7 9 3 Remove the retaining ring that fastens the lower pivot arm to the pivot arm connector Diagram 7 16 Pivot Arm Connector Pivot Arm Connector BM Lower Pivot Arm 4 Remove the pivot arm connector Remove the wave washer from the pivot arm connector 5 Place the wave washer from step 5 on the replacement pivot arm connector Slide the pivot arm connector into the lower pivot arm and replace the retaining ring 6 Hand start the three bolts that fasten the pivot arm connector to the stairarm Torque the three pivot arm connector bolts to 125 inch pounds Pag
6. Page 40 C556 Elliptical Fitness Crosstrainerl Procedure 7 6 Replacing the Line Filter Removing the Line Filter 1 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 2 3 5 Remove the rear cover Remove two screws from the bottom of the EFX frame that secure the power entry module mounting bracket to the frame Swing the power entry module mounting bracket away from the frame to gain access to the line filter wiring Remove two blue wires and two brown wires from the line filter Disconnect the ground wire green from the ground stud Remove the screws that secure the line filter Remove the filter from its mounting position Replacing the Line Filter 6 Position the new line filter on the rear assembly bracket Install the screws that mount the line filter to the rear assembly bracket Refer to Wiring Diagram 8 1 for 120V units or Wiring Diagram 8 3 for 240V units and reconnect the wiring removed in step 4 Fasten the power entry module mounting bracket to the EFX frame with the screws removed in step 3 Re install the rear cover then check the operation of the EFX as described in Section Four Page 41 C556 Elliptical Fitness Crosstrainer Procedure 7 7 Replacing the ON OFF Switch Removing the ON OFF Switch 1 Set
7. of the heart rate readings Press the ENTER key to advance to the brake test 6 The message BRAKE TEST will be displayed followed the resistance level and brake level readings This test allows you to test the brake resistance at each resistance level Press the ENTER key to exit the diagnostics program Page 8 C556 Elliptical Fitness Crosstrainerl Procedure 3 3 Displaying the Odometer Procedure 1 Plug the power cord into the wall outlet then turn on the EFX with the circuit breaker 2 With the PRECOR C556 banner scrolling press keys RESET 6 5 sequentially The message ODOMETER will be displayed followed by the total number of strides accumulated The total number of strides can be converted to miles by dividing by 2241 or to kilometers by dividing by 1392 5 Press the ENTER key to advance to total hours 3 The message HOURS will be displayed followed by the total number of hours that the C556 has been in use Press the ENTER key to advance to software version 4 The message SOFTWARE VERSION will be displayed followed by the software versions of the upper and lower PCA s For example UPPER 1 01 LOWER 1 01 Press the ENTER key to advance to error log 5 The message ERROR LOG will be displayed followed by the error in log position 1 Each log entry shows the log position the stride count when the error occurred and the hour meter when the error occurred For example 1 ER21 123456 STR 45678 HRS The error log can recor
8. 3 Remove the stairarm assemblies as described in Procedure 7 17 4 Remove the crankarm assemblies as described in Procedure 7 8 5 Remove the magnet assembly as described in Procedure 7 14 6 Remove tension from the input pulley and step up pulley belts as described below a Loosen the stub tensioner axle nut and turn the stub tensioner adjustment nut counter clockwise until tension is removed from the input belt See Diagram 5 3 b Straighten the locking tabs and turn the left and right tension bolts counterclockwise until tension is removed from the step up belt See Diagram 5 2 c Slide the input and step up belts off of their pulleys 7 Remove the stub tensioner per procedure 7 20 steps 4 and 5 8 Remove the input drive assembly mounting bolts 2 per pillow block bearing Diagram 7 6 Input Drive Assembly Input Pulley YM Mounting Bolt Pillow Block 2 Step Up Pulley Belt Page 47 10 11 C556 Elliptical Fitness Crosstrainer Remove the input drive assembly Slide both belts off of the ends of the input drive assembly Hold the replacement input drive assembly at it s mounting position and slide the input belt over and past the pillow block bearing on the left side of the input drive assembly Slide the step belt over and beyond the pillow block bearing on the right side of the input drive assembly Replace the bolts in one of the pillow block bearings and torque both bolts to 500 inch po
9. 6 5 Club Settings Keys RESET 5 6 5 1 5 6 5 Diagram 3 1 C556 Display Panel Page 7 C556 Elliptical Fitness Crosstrainer Procedure 3 2 Accessing the Diagnostic Program The EFX diagnostic software cycles through the following tests Display Test Keyboard Test Heart Rate Test Brake resistance Test Procedure 1 Plug the power cord into the wall outlet then turn on the EFX with the circuit breaker 2 Press keys RESET 5 1 7 6 5 7 6 1 sequentially 3 The message DISPLAY TEST will be displayed followed by every LED on the display being illuminated Check each LED segment to ensure that all of the segments are illuminated Press the ENTER key to advance to the keyboard test 4 The message KEYBOARD TEST will be displayed followed by a graphical representation of each key position on the display housing As each key on the display is pressed the key representation is turned off indicating that the key is functioning Check each key in this manner including the numeric keyboard Press and hold the ENTER key for 2 seconds to advance to the heart rate test 5 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
10. chest strap setting The internal chest strap setting is the two left hand pins on the three pin connector as shown below in Diagram 6 4 These settings allow the heart rate system to operate on the internal chest strap receiver with the chest strap heart rate priority That is if both a chest strap and hand heart rate signal is being received the system will accept the chest strap signal and ignore the hand held signal If a chest strap signal is not being received the system will accept the hand held signal Note There are four typical failure modes for the hand held chest strap heart rate system They are 1 hand held is normal no chest strap reading 2 no hand held reading chest strap normal 3 no hand held or chest strap reading 4 constant or intermittent readings when neither hand held or chest strap are in use Diagram 6 4 Hand held chest strap heart rate PCA o LO i TA _ Lower Right DE Sei pper Right ae CO Upper Left Internal Chest x Strap Setting _ E Lower Left Normal hand held reading No chest strap reading 1 Set the on off switch in the on position and access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that a chest strap signal is not being accepted with either a Polar heart rate test transmitter or a known good chest strap transmitter If this reading is good skip to step 3 2 Using a Polar heart rate test
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12. in Section One Things You Should Know 2 Remove the rear cover 3 Remove the stairarm assemblies as described in Procedure 7 17 4 Remove the crankarm assemblies as described in Procedure 7 8 5 Remove the magnet assembly as described in Procedure 7 14 6 Remove the input drive assembly per Procedure 7 11 steps 6 9 7 Carefully lay the EFX on it s side Remove the bolts that retain mounting plate for the input module and on off switch Swing the mounting plate away from the drive unit 8 Remove the left and right tension bolts locking tabs and brackets Slide the step up pulley assembly with both the step up and input belts out of the drive unit 9 Remove the input pulley belt Set the replacement input pulley belt in it s mounting position on the step up pulley assembly 10 Set the step up pulley assembly with the step up and input belt at it s mounting position in the drive unit Replace the tensioning bolts locking tabs and brackets removed in step 8 Thread the left and right tension bolts into the step up pulley shaft 11 Complete the installation per Procedure 7 11 steps 10 17 Page 45 C556 Elliptical Fitness Crosstrainer Procedure 7 9 Replacing the Step Up Pulley Belt 1 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
13. into two groups One group has blue shrink wrap around it and the other group has black shrink wrap around it The blue group must go to the right hand contacts and the black group must go to the left hand contacts In both groups the black wire must go to the lower contact and the red wire must go to the upper contact If necessary rewire the hand held contacts as described above and test as described in step 6 Page 29 C556 Elliptical Fitness Crosstrainer 15 Set the on off switch in the off position Refer to Diagram 6 4 for the following measurements With an ohmmeter measure between the lower right contact pin on the J1 connector and the lower right hand held heart rate contact on the handlebar The reading should be 1 Q or less Measure between the upper right contact pin on the J1 connector and the upper right hand held heart rate contact on the handlebar The reading should be 1 Q or less Measure between the upper left contact pin on the J1 connector and the upper left hand held heart rate contact on the handlebar The reading should be 1 or less Measure between the lower left contact pin on the J1 connector and the lower left hand held heart rate contact on the handlebar The reading should be 1 Q or less If any of the above readings are greater than 1 Q replace the heart rate PCA to handlebar wire harness No hand held reading No chest strap reading 16 Set the on off switch in the o
14. must now be checked and if necessary corrected Remember if it is necessary to change the belt tension the belt alignment must be maintained Diagram 5 1 Drive Unit Stub Tensioner Step Up Pulley Left PTS 3 Right Tension Bolt A A EA Tension Bolt 14 Place a belt gauge Precor part 20030 117 or equivalent in the middle of the step up belt and the center of the belt span see Diagram 5 2 Lay a straight edge along the length of the belt and beside the belt gauge Slide one of the o rings up against the shoulder of the belt gauge Press downward on the belt gauge causing the belt to deflect Read the deflection on the belt gauge at the edge of the straight edge Deflect the belt 1 4 Read the tension across the top edge of the o ring If the belt is correctly tensioned the gauge will read between 19 and 21 pounds 15 If the tension in step 13 is correct skip to step 18 Otherwise continue with the next step Page 15 C556 Elliptical Fitness Crosstrainer Diagram 5 2 Measuring Belt tension 16 17 18 19 20 If the locking tabs on the right and left tension bolts have not been straightened use pliers to bend the locking tabs out of the way so that the bolts can be turned IF THEN The belt tensioning gauge reads Turn both tension bolts less than 19 pounds clockwise in equal quarter turn increments until the belt tensioning gauge reads 19 21 pounds 1 4 deflection The belt te
15. 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 2 Remove the rear cover 3 Remove two screws from the bottom of the EFX frame that secure the power entry module mounting bracket to the frame Swing the power entry module mounting bracket away from the frame to gain access to the on off switch wiring 4 Disconnect the two brown and two blue wires from the on off switch 5 Depress the mounting tabs that secure the switch to its mounting bracket Remove the switch from its mounting position Replacing the ON OFF Switch 6 Make sure that the new on off switch is set to the off position Position the switch assembly so that the label is facing up Snap the switch assembly into the mounting bracket 7 Refer to Wiring Diagram 8 1 for 120V units or Wiring Diagram 8 3 for 240V units and reconnect the switch wiring removed in step 4 8 Fasten the power entry module mounting bracket to the EFX frame with the screws removed in step 3 9 Re install the rear cover then check the operation of the EFX as described in Section Four Page 42 C556 Elliptical Fitness Crosstrainerl Procedure 7 8 Replacing a Crankarm Assembly Removing a Crankarm Assembly 1 Set the on off switch in the off position then unplug the power cord from the wall outlet
16. the operation of the EFX at the end of most maintenance procedures Procedure hs 2 10 11 Plug the power cord into the wall outlet and set the on off switch in the on position When the PRECOR C55 6 WORK OUT SMARTER banner scrolling press QUICK START Select Resistance Level 1 and press ENTER Operate the EFX for 4 5 minutes As you operate the EFX concentrate on the operating sounds made by the unit Be on the alert for unusual rubbing hitting grinding or squeaking noises If the EFX makes unusual noises or the electronic display does not change appropriately troubleshoot per section 6 Press the RESISTANCE A key until you reach Resistance Level 10 Operate the EFX for another 2 3 minutes If the EFX resistance does not change or the operation of the EFX feels inconsistent compared with Resistance Level 1 troubleshoot per section 6 Press the RESISTANCE A key until you reach Resistance Level 20 Operate the EFX for another 2 3 minutes If the resistance of the C556 does not change or the EFX operation feels inconsistent with Resistance Levels 1 and 10 troubleshoot per Procedure 6 5 Check the LED s mounted on the upper PCA and the function keys displayed on the electronic console by performing Procedure 3 2 Turn off the EFX with the on off switch then unplug the power cord from the wall outlet Page 12 C556 Elliptical Fitness Crosstrainerl Procedure 5 1 Measuring the Resistan
17. 00 in lbs Replace the stairarms per Procedure 7 16 24 Check the operation of the unit as described in Section Four then re install the rear cover as described in Procedure 7 26 Page 17 C556 Elliptical Fitness Crosstrainer Procedure 6 1 Troubleshooting the Lower and Upper Interconnect Cables Anti static kits can be ordered from Precor part number 20024 101 Troubleshooting the Upper Interconnect Cable 1 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 2 Attach the anti static wrist strap to your arm then connect the ground lead of the wrist strap to the units frame 3 Remove two screws that fasten the upper mid point cover Remove two screws that fasten the lower mid point cover Remove both halves of the cover and the split gasket See Diagram 6 1 Diagram 6 1 Mid Point Cover Upper Cover Mounting Screw Lower Cover Lower Cover q Mounting Screw 4 Remove the four screws from the rear of the upper display housing Remove the display housing front panel from the display housing Disconnect the upper interconnect cable from the upper PCA connector J5 Page 18 5 C556 Elliptical Fitness Crosstrainerl Disconnect the upper interconnect cable from the mid point connector See Diagram 6 2 Diagram 6 2 Mid Point Connector Upper Interconnect
18. 7 1 Diagram 7 1 Mid Point Cover Split Gasket Upper Cover UN Mounting Screws Lower Cover Lower Cover ES Mounting Screws 3 Fit the two replacement cover halves and gasket at their mounting positions Hand start the four mounting screws removed in step 2 4 Hold the cover halves in place and tighten the four mounting screws Page 32 C556 Elliptical Fitness Crosstrainerl Procedure 7 2 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 Removing the Display Housing Front Panel 1 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 2 Attach the anti static wrist strap to your arm then connect the ground lead of the wrist strap to the units frame 3 Remove the four screws that secure the display housing front panel to the display backing plate 4 Attach the wrist strap to your arm then connect the ground lead of the wrist strap to the EFX frame 5 Disconnect the upper interconnect cable from the upper PCA connector J5 Removing and Replacing the Upper PCA 6 Carefully disconnect the keyboard cable from the upper PCA connector J2 7 Remove the four screws tha
19. C556 Elliptical Fitness Crosstrainerl C556 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 2003 Precor Incorporated Unauthorized Reproduction and Distribution Prohibited By Law Page 1 C556 Elliptical Fitness Crosstrainer Section One Things You Should Know C556 Serial Codes and Manufacturing Dates The C556 has been manufactured in two versions The applicable serial codes and manufacturing dates associated with each version will be detailed below When servicing a C556 it is critical that you are aware of which version of C556 you are servicing The differences in the versions may gr
20. Mid Point Cable gt Connector Lower lt a Interconnect Cable 357 External of the upper column connect a replacement upper interconnect cable to the mid point connector and the upper PCA connector J5 Check operation as described in Section 4 If the unit works properly replace the upper interconnect cable as described in Procedure 7 4 If the symptoms are unchanged remove the external upper interconnect cable Reconnect the internal upper interconnect cable to the mid point connector and the upper PCA Set the display housing front panel in it s mounting position and fasten it with the four mounting screws removed in step 4 Trouble shoot the lower interconnect cable starting with step 9 Troubleshooting the Lower Interconnect Cable 9 Remove the rear cover as described in Procedure 7 1 Remove the shield from the lower PCA Disconnect the lower interconnect cable from the mid point connector and the lower PCA connector J5 External of the frame connect a replacement lower interconnect cable to the mid point connector and the lower PCA Check operation as described in Section 4 If the unit works properly replace the lower interconnect cable as described in Procedure 7 4 If the symptoms are unchanged remove the external lower interconnect cable Reconnect the internal lower interconnect cable to the mid point connector and the lower PCA Remove the upper and lower interconnect cables from the mid point c
21. and or climb on the handlebars display enclosure or cover Do not set anything on the handlebars display enclosure or cover Never place liquids on any part of the EFX while performing service e To prevent electrical shock keep all electrical components such as the power cord and circuit breaker away from water and other liquids Do not use accessory attachments that are not recommended by the manufacturer such attachments might cause injuries General Information For the latest exploded view part number and part pricing information visit the Precor dealer website at www precor com Dealer Tools Required Multimeter Allen wrench set Anti static kit Screwdriver set 4 6 gear puller 1 2 allen key socket wrench mounted C clamp or Carpenter s clamp Precor part number 20030 117 belt gauge US and metric end wrench set Straight edge US and metric socket wrench set Torque wrench 200 in lbs Torque wrench 200 ft lbs Page 4 C556 Elliptical Fitness Crosstrainerl Section Two Preventive Maintenance Preventive maintenance measures are either scheduled or unscheduled Scheduled preventive maintenance activities are included here so that you are aware of preventive measures performed on a regular basis 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 foll
22. bearing shaft will be very tight a long handled socket wrench with a 7 16 hex key will be necessary for removal See Diagram 7 18 Diagram 7 18 Upper Pivot Arm Bearing Shaft 4 Remove the upper pivot arm from the unit 5 Remove the retaining ring from the lower end of the upper pivot arm Remove the roller bearing from the lower end of the upper pivot arm See Diagram 7 19 Page 66 C556 Elliptical Fitness Crosstrainerl Diagram 7 19 Upper Pivot Arm Components Tolerance Lower B Mounting Bolt U End Ring Gere Qe Roller Bearing Wave Washer ON Needle Roller Bearing Assembly R Retaining Ring gt Retaining Ring The bearing in the lower end of the upper pivot arm is replaceable The bearings in the upper end of the upper pivot arm are not field replaceable If the bearings in the upper end of the upper pivot arm are defective replace the entire upper pivot arm If you are replacing the bearing in the lower end of the upper pivot arm substitute the new part during the assembly process Slide the roller bearing into the lower end of the upper pivot arm Insert the retaining ring into the lower end of the upper pivot arm Align the lower end of the upper pivot arm with the lower pivot arm hand start the bolt that fastens the upper pivot arm to the lower pivot arm Set the upper end of the upper pivot arm in it s mounting position and carefully thread the bearing shaft into th
23. ce of an Eddy Current Magnet Caution Remove power from the EFX before you measure magnet resistance Procedure 1 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 1 Remove the rear cover as described in Procedure 7 1 2 Set the ohmmeter to a range that will conveniently read up to 125 Q 3 Disconnect the magnet wires Measure the resistance between the two magnet wires Note The resistance of the magnets will be higher than optimum 90 110 Q when they are warm 4 Ifthe resistance measures significantly less than 90 Q or significantly more than 110 Q THEN OTHERWISE Replace the magnet as described Reconnect the magnet wires then in Procedure 7 13 continue with the next step 5 Re install the rear cover as described in Procedure 7 1 then check the operation of the unit as described in Section Four Page 13 C556 Elliptical Fitness Crosstrainer Procedure 5 2 Inspecting and Adjusting Belt Alignment and Tension Procedure 1 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 2 Remove the rear cover as described in Procedure 7 26 3 Remov
24. ct the problem call Precor customer service Page 21 C556 Elliptical Fitness Crosstrainer Procedure 6 3 Upper Display does not Illuminate 10 11 12 13 14 15 16 17 Set the on off switch in the off position unplug the line cord from the wall outlet Attach the anti static wrist strap to your arm then connect the ground lead of the wrist strap to the units frame Remove the F1 fuse from the lower PCA per Procedure 7 2 steps 1 5 See Diagram 7 3 Remove the fuses from the input power module See Diagram 7 4 Check all three fuses with an ohmmeter They should read approximately 1Q or less Replace any fuse that reads significantly high Replace the fuses in the power input module With the line cord still unplugged from the wall outlet set the on off switch in the on position check between the power terminals of the line cord with an ohmmeter The ohmmeter reading should be infinity open If the reading is good skip to step 11 otherwise continue with the next step If the reading in step 5 is significantly low check the wiring between the lower PCA and the on off switch between the on off switch and the input module Replace any cut or nicked wiring Check the line cord for nicked or cut wiring Replace the line cord if necessary If you have performed all of the above tests and are unable to resolve the problem contact Precor customer support Replace the F1 1 4 amp fuse
25. d followed by the currently selected maximum pause time Use the A and vw keys to select the maximum pause time The maximum pause time is the that will elapse after the pause key has been pressed until the unit resets The maximum pause time may be set between 1 and 120 seconds Press ENTER to exit the club settings program Page 10 C556 Elliptical Fitness Crosstrainerl Procedure 3 5 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 recorded with the malfunctioning PROM or PCA when you ship it to Precor When a problem occurs record the following information Model and serial number e Software version number Note Look at the PROM mounted on the upper PCA A label on the PROM indicates the software version number User and program number running when the problem occurred A description 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 The frequency of occurrence Page 11 C556 Elliptical Fitness Crosstrainer Section Four Checking C556 Operation This section provides you with a quick method of checking EFX operation Check
26. d up to ten error conditions The error code in position one will be the most recent error and the error in position ten will be the oldest error If more than ten errors have been logged only the ten most recent will be displayed When a new error is logged each existing error is pushed down one position and the error in position 10 if any is lost Use the A and wkeys to move through the log Pressing and holding the QUICK START key for four seconds will clear the log Press the ENTER key to exit the odometer program Page 9 C556 Elliptical Fitness Crosstrainer Procedure 3 4 Club Settings 1 Enter the club settings by pressing keys RESET 5 6 5 1 5 6 5 sequentially 2 The message SELECT LANGUAGE will be displayed followed by the currently selected language Use the a and vw keys to select the language preference Press the ENTER key to advance to units of measurement 3 The message SELECT UNITS will be displayed followed by the currently selected unit of measurement Use the A and vw keys to select either U S Standard or METRIC measurements Press the ENTER key to advance to maximum workout time 4 The message SET MAX WORKOUT TIME will be displayed followed by the currently selected maximum workout time Use the A and vw keys to select the maximum workout time The maximum workout time may be set between 1 and 240 minutes or no limit Press ENTER to advance to maximum pause time 5 The message SET MAX PAUSE TIME will be displaye
27. e 64 C556 Elliptical Fitness Crosstrainerl Procedure 7 22 Replacing a Lower Pivot Arm 1 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 2 Remove the retaining ring that fastens the lower pivot arm to the pivot arm connector See Diagram 7 16 3 Remove the bolt that fastens the lower pivot arm to the upper pivot arm Diagram 7 17 Pivot Arms Upper Pivot Arm Pivot Arm Connector _ Lower Pivot Arm 4 Remove the lower pivot arm 5 Slide the lower pivot arm onto the pivot arm connector Replace the retaining ring removed in step 2 6 Align the lower pivot arm with the upper pivot arm and replace the bolt removed in step 3 Torque the bolt to 200 inch pounds Page 65 C556 Elliptical Fitness Crosstrainer Procedure 7 23 Replacing an Upper Pivot Arm or Bearings 1 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 2 Remove the bolt that fastens the upper pivot arm to the lower pivot arm See Diagram 7 17 3 Remove the cap from the upper end of the upper pivot arm Remove the bearing shaft from the upper end of the upper pivot arm The
28. e both stairarms as described in Procedure 7 16 4 Operate the unit by rapidly rotating a crankarm by hand As the unit operates watch the drive belts for proper alignment The belts should operate parallel to each other and the belts should maintain even spacing 5 Ifthe belts are not correctly aligned THEN OTHERWISE Continue with the next step Skip to step 13 6 Refer to Diagram 5 1 for the following belt alignment steps The right and left tension bolts have locking tabs If necessary use pliers to bend the locking tabs out of the way so that the bolts can be turned 7 Ifthe step up pulley belt is out of alignment to the right continue with step 9 8 Ifthe step up pulley belt is out of alignment to the left continue with step 11 9 Turn the left tension bolt 1 4 turn clockwise then repeat step 4 If turning the left adjustment bolt 1 4 of a turn was not sufficient turn the right tension bolt 1 4 of a turn counterclockwise 10 Repeat step 8 alternating between the left and right tension bolts until the alignment is correct Continue with step 13 11 Turn the right tension bolt 1 4 of a turn clockwise then repeat step 4 If turning the right adjustment bolt 1 4 of a turn was not sufficient turn the left tension bolt 1 4 turn counterclockwise 12 Repeat step 11 alternating between the right and left tension bolts until the alignment is correct Page 14 C556 Elliptical Fitness Crosstrainerl 13 Belt tension
29. e frame Care must be taken to avoid cross threading the bearing shaft Torque the lower mounting bolt to 200 inch pounds Torque the bearing shaft to 150 foot pounds 1800 inch pounds Insert the cap into the upper end of the upper pivot arm Page 67 C556 Elliptical Fitness Crosstrainer Procedure 7 24 Replacing the Upper Main Column 1 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 2 3 5 Remove the mid point cover per Procedure 7 1 Attach the wrist strap to your arm then connect the ground lead of the wrist strap to the EFX frame Carefully reach into the access hole in the lower front of the upper main column and extract the interconnect cables Disconnect the upper interconnect cable from the mid point connector See Diagram 7 20 Diagram 7 20 Upper Main Column Mounting Cable Cable Lower A Upper Interconnect Interconnect Mid Point Connector Upper Main Column Remove the four bolts that fasten the upper main column to the frame Remove the upper main column Remove the four screws that fasten the display housing backing plate to the upper main column Remove the display housing from the upper main column and carefully draw the upper interconnect cable out of the upper main column Feed the up
30. e the lower PCA Diagram 7 3 Lower PCA Z166 IJd 4 T8 120 imi D7 LED yy S S HE A J5 Connector Page 35 C556 Elliptical Fitness Crosstrainer Replacing the Lower PCA 7 Position the replacement lower PCA at its mounting position 8 Install the screws that secure the lower PCA 9 Connect the cables you disconnected in Step 5 10 Install the lower PCA shield 11 Remove the ground lead of the wrist strap from the EFX frame then remove the wrist strap from your arm 12 Re install the rear cover then check the operation of the C556 as described in Section Four Page 36 C556 Elliptical Fitness Crosstrainerl Procedure 7 4 Replacing the Upper and or Lower Interconnect Cables Before you install a new interconnect cable ensure that the interconnect cable is defective as described in Procedure 6 1 Procedure 1 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 2 Attach the wrist strap to your arm then connect the ground lead of the wrist strap to the EFX frame 3 Ifyou are replacing the lower interconnect cable skip to step 12 Replacing the Upper Interconnect Cable 4 Remove the display housing per Procedure 7 2 steps 2 to 6 5 The upper and lower interconnect cables are connected at the mid point of the main column Remove the mid point column co
31. eatly impact service requirements and procedures For convenience the versions detailed below will be referred to as version 1 or version 2 in the reminder of this service manual Any procedures that do not reference a specific version is applicable to all versions of the C556 Version 1 was manufactured between May 2000 and July 2001 The serial codes associated with version 1 are 6Q 70 8Y 8Z AC AD AN and BB Version 2 was manufactured between July 2001 and the present The serial codes associated with version 2 are DA DB EW HD and HE Right Left Front and Back Conventions In this manual right left front and back are from the perspective of a user standing on the C556 facing the display enclosure Warning and Caution Statements and General Safety Guidelines Warning statements indicate a particularly dangerous activity Warning statements you will find in this manual include To remove power from the EFX the power cord must be disconnected from the wall outlet Always ensure that the EFX is unplugged from the wall outlet when you inspect or adjust the EFX or when you isolate remove or replace an EFX component Removing the covers exposes high voltage components and potentially dangerous machinery Exercise extreme caution when you perform maintenance procedures with the hood removed e During service operations you will be very close to moving machinery and high voltage components When you perform maintenance p
32. em to dry and apply blue loctite to the crankarm mounting bolt threads 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 Ibs Replace the stairarm assembly as described in Procedure 7 16 If you are replacing both crankarm assemblies repeat steps 8 and 9 for the second crankarm assembly Set the on off switch in the on position Use the unit and note whether the stride rate is being displayed If the stride rate is zero while the unit is being used the magnet was installed backwards The hall effect sensor is polarity sensitive therefore the magnet installed in step 7 must be reversed If the stride rate in step 11 was zero remove the magnet from the right hand crankarm reverse and reinstall it Repeat step 11 Set the unit at it s highest resistance setting and use the EFX for a minimum of 3 minutes Stride in a forward direction for half of the time and in a backward direction for half of the time Set the on off switch in the off position and re torque both of the 14 mm crankarm mounting bolts to 300in Ibs Replace the rear cover Page 44 C556 Elliptical Fitness Crosstrainerl Procedure 7 9 Replacing the Input Pulley Belt 1 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
33. ent 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 DIP28 Notch Page 77 Wiring Diagram 8 1 C556 120 Vac Keyboard Units manufactured before 10 16 2000 Power Entry Module Units manufactured after 10 15 2000 C556 Elliptical Fitness Crosstrainer To Optional CSAFE Upper PCA J2 Lower PCA J5 AC H J2 1 J2 2 RI GI BK Eddy Speed Current ol Magnet Page 78 C556 Elliptical Fitness Crosstrainerl Block Diagram 8 2 C556 120 Vac npo TA Aug l Och Jaod 1002 51 04 Jay Prge Spur ug gza wye PRINS Ey spu yAUbRyy aut APPS LSA osod odn X33 021 9563 Page 79 C556 Elliptical Fitness Crosstrainer Wiring Diagram 8 3 C556 240 Vac To Optional CSAFE Keyboard Upper PCA P1 J2 Units manfactured before 10 16 2000 LowerPCA J5 T BR BR AC H Line Stepdown Filter Transformer BL Units manufactured after 10 15 2000 J2 4 J2 2 l a G BR BL BK R G BK L I l J Eddy S eed BR aan BL Current oo ogu e Magnet Page 80 C556 Elliptical Fitness Crosstrainerl Block Diagram 8 4 C556 240 Vac
34. g or significantly low replace the speed sensor assembly If you have performed all of the above tests and the stride rate is not displayed when the unit is operated 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 interconnect cables 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 speed sensor is still not functioning call Precor Technical Support Page 25 C556 Elliptical Fitness Crosstrainer Procedure 6 5 Troubleshooting the Eddy Current System Note If the control circuit does not see an output from the speed sensor it removes power from the eddy current system Therefore when it is necessary to check the resistance or take voltage measurements in the eddy current system it will be necessary to slowly turn the flywheels to ensure that the power time out has not occurred WARNING Before continuing with this procedure review the Warning and Caution statements listed in Section One Things You Should Know 1 There are three typical symptoms concerning the eddy current system No resistance pedaling resistance no resistance shortly after power up and incorrect resistance If the problem is no resistance continue with step 2 If the problem is no resistance shortly after power up test the
35. g received by the chest strap portion of the heart rate PCA Disabling the chest strap signal proves that it is radiated energy that is causing the problem If a hand held signal still not being accepted skip to step 13 The source of the radiated energy must be determined and relocated so that it no longer affects the heart rate PCA Televisions cell phones Cardio theatre receivers etc are possible sources of radiated energy Set the on off switch in the off position and remove the temporary jumper from J14 of the heart rate PCA Re locate all potential sources of radiation Set the on off switch in the on position and repeat the procedure in step 6 Setthe on off switch in the on position and access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that a hand held signal is not being accepted by firmly grasping both the right and left hand held contacts with the opposite hands right hand on the left handlebar contacts and left hand on the right handlebar contacts Cover as much of the contact surface area with your hands as possible you should receive a heart rate reading within ten seconds If a hand held signal is still not being accepted skip to step 15 If a hand held signal was accepted in step 13 the hand held contact wiring is reversed The end of the wire harness that connects to the hand held contacts in the handlebar is segregated
36. in the lower PCA perform the resistance measurement in step 6 The reading should be approximately 1 0 to 1 5 megohms Replace the F2 2 amp fuse in the lower PCA perform the resistance measurement in step 6 The reading should be approximately 1 0 to 1 5 megohms If either of the readings in step 11 or 12 were significantly low replace the lower PCA Plug the line cord into the wall outlet and set the on off switch in the on position The red LED D7 and the red LED D2 should illuminate Check between TP11 and TP14 on the lower PCA with a DC voltmeter The reading should be approximately 5 Vdc If the reading in step 15 is good skip to step 18 If the reading in step 15 is significantly low set the on off switch in the off position Disconnect the interconnect cable J5 from the lower PCA Page 22 18 20 C556 Elliptical Fitness Crosstrainerl Set the on off switch in the on position Repeat step 15 If the reading is still significantly low replace the lower PCA If the reading is now good the problem is either one of the interconnect cables or the upper PCA Substitute a known good upper PCA per Procedure 7 2 If the upper PCA does not correct the problem troubleshoot the upper and lower interconnect cables per Procedure 6 1 If you have performed all of the above tests and are unable to resolve the problem contact Precor customer support Page 23 C556 Elliptical Fitness Crosstrainer Pr
37. ing 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 Lift the rear portion of the frame cover and carefully remove the front cover section If it is necessary to remove the frame cover lift the rear of the frame cover slide the frame cover out of the ramp and remove the frame cover Page 71 C556 Elliptical Fitness Crosstrainer Diagram 7 23 Top Cover Section with right amp left cover sections removed Top Cover E Mounting Screw Section Front Cover TA TIM or j Frame 15 16 17 18 19 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 Slide the tongue of the frame cover into the ramp Lift the rear of the frame cover and fit the front cover against the frame cover Slide the front and frame covers into place as a unit Replace and tighten the four phillips screws that fasten the frame cover to the frame Replace and tighten the two phlliips screws that fasten the front cover section to the frame Set the top cover section in it s mounting position replace and tighten the two phillips screws that fasten the top cover section to the f
38. king plate 7 Lift the display housing front panel off of the display housing backing plate Remove the keypad connector from the upper PCA See Diagram 6 3 Page 20 C556 Elliptical Fitness Crosstrainerl Diagram 6 3 Upper PCA amp Keypad 11 12 16 Upper PCA Keypad Connector Keypad Set the on off switch in the on position If a key depressed message is immediately displayed when the EFX is powered up replace the upper PCA If a key depressed message is not displayed when the EFX is powered up replace the display housing front panel The display housing front panel is equipped with the keypad If you have performed all of the procedures above and have been unable to correct the problem call Precor customer service Access the diagnostics program per procedure 3 2 If the key s necessary to access the diagnostic program is not functioning skip to step 14 Test the keypad per Procedure 3 2 step 4 If all of the keys test good the problem may be user error or a key function that is normally disabled during a particular user program If one or more keys do not function correctly either the keypad display housing or upper PCA could be defective Replace the display and repeat step 12 If the display housing did not correct the problem re install the original display housing and replace the upper PCA If you have performed all of the procedures above and have been unable to corre
39. l 1 Set the on off switch in the off position then unplug the power cord from the wall outlet 2 Loosen and remove the two bolts that fasten the stairarm pedal onto the stairarm 3 Remove the stairarm pedal from the stairarm 4 Set the replacement stairarm pedal at it s mounting position on the stairarm 5 Install and hand tighten the stairarm pedal mounting hardware removed in step 2 Torque the stairarm pedal mounting bolts to 60 in lbs Page 57 C556 Elliptical Fitness Crosstrainer Procedure 7 17 Replacing a Stairarm 1 Set the on off switch in the off position then unplug the power cord from the wall outlet 2 Remove the three bolts that fasten the pivot arm connector to the stairarm See Diagram 7 11 Diagram 7 11 Pivot Arm Connector Mounting Bolt Pivot Arm Connector 3 Remove the rear cover 4 Remove the retaining clip that fastens the stairarm onto the crankarm Slide the stairarm off of the crankarm 5 Loosen and remove the two bolts that fasten the stairarm pedal onto the stairarm 6 Remove the stairarm pedal from the stairarm 7 Setthe stairarm pedal at it s mounting position on the replacement stairarm 8 Install and hand tighten the stairarm pedal mounting hardware removed in step 6 Torque the stairarm pedal mounting bolts to 60 in lbs 9 Remove the four screws that fasten the wheel assembly to the stairarm Remove the wheel assembly from the stairarm Page 58 12 13
40. led to service a EFX perform these preventive maintenance activities Perform the software diagnostics Check LED and keypad function Record the odometer reading Check speed sensor function is the stride rate displayed when the unit is in operation If not see Procedure 6 3 Visually inspect the drive belts for cracks fraying or excessive wear Inspect the power cord If the power cord is damaged install a new power cord Visually examine all wires and check connectors and wire connections Secure connections and replace wiring as necessary Page 6 C556 Elliptical Fitness Crosstrainerl Procedure 3 1 Software Access Codes The C556 uses 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 The standard access codes use all sequential key presses The allowable delay between key presses is short If too much time is taken between key presses the access procedure will be aborted If the access is aborted it will be necessary to start over from the beginning See Diagram 3 1 The C556 display does not utilize key positions 2 and 3 however they must be counted to correctly locate keys 4 through 6 On the C556 display key 1 is the RESET key and key 4 is the QUICK START key Standard Access Codes Diagnostics Keys RESET 5 1 7 6 5 7 6 1 Odometer Keys RESET
41. lower PCA end of the old interconnect cable Carefully pull the old interconnect cable out of the mid point access hole while feeding the new interconnect cable into the unit When the new cable is fully into the unit remove the tape and discard the old interconnect cable Connect the lower interconnect cable to the mid point connector and push them into the access hole Connect the new interconnect cable to the lower PCA Replace the shield on the lower PCA Replace the rear cover Check the operation of the EFX as described in Section Four Page 38 C556 Elliptical Fitness Crosstrainerl Procedure 7 5 Replacing the Power Entry Module Units manufactured before 10 16 2000 Removing the Power Entry Module 1 Set the on off switch in the off position then unplug the power cord from the wall outlet and from the EFX WARNING Before continuing with this procedure review the Warning and Caution statements listed in Section One Things You Should Know 2 Release the fuse drawer from the power entry module Remove the fuse drawer See Diagram 7 4 Diagram 7 4 Fuse Drawer Power Entry Module 3 Remove the fuses from the fuse drawer and test them with an ohmmeter Both fuses should read approximately 1Q or less If both fuses test good continue with step 4 If either fuse reads significantly high replace the fuse and retest the EFX It may not be necessary to replace the power entry module If the fuse blows again as soon as
42. n position and access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that neither a chest strap signal or a hand held signal is being accepted with either a heart rate test transmitter or a chest strap transmitter 17 Check the plug connector connections on both the heart rate PCA J4 and upper PCA J1 18 If neither a chest strap signal or a hand held signal is being accepted measure between the ground and 5 Vdc pins on J4 for 5 Vdc If 5 Vdc is present replace the heart rate PCA 19 If 5 Vdc is not present remove the connector from J4 of the heart rate PCA Measure between the ground and 5 Vdc pins of the connector just removed from the heart rate PCA for 5 Vdc If 5 Vdc is present replace the heart rate PCA If the 5 Vdc is not present measure between the corresponding pins of J1 on the upper PCA red and black wires If 5 Vdc is not present replace the upper PCA If 5 Vdc is present replace the upper PCA to heart rate PCA cable Constant or intermittent readings when neither the hand held or chest strap is in use 20 Verify that a ferrite core is clamped around the heart rate PCA to upper PCA cable 21 Constant or intermittent heart rate readings when neither heart rate system is in use is caused by something in the near vicinity radiating RF energy that is being received by the chest strap portion of the heart rate PCA 22 Tempo
43. nd cap with the screws removed in step 4 9 Setthe ramp assembly at it s mounting position Hand start the six rear mounting bolts and the two front bottom mounting bolts Torque the six rear mounting bolts to 120 inch pounds Torque the two front bottom mounting bolts to 100 inch pounds 10 Rotate both stairarms forward onto the ramp assembly 11 Set the pivot arm connectors at their mounting positions on the stairarms Replace and torque the six pivot arm connector bolts to 135 inch pounds 12 Replace the rear cover Page 61 C556 Elliptical Fitness Crosstrainer Procedure 7 19 Replacing a Handlebar 1 Set the on off switch in the off position then unplug the power cord from the wall outlet 2 Remove the four screws that fasten the handlebar to the upper pivot arm Diagram 7 14 Handlebar Mounting Mounting DS Screw 3 3 Set the replacement handlebar in it s mounting position Hand start the four mounting screws Center the handlebar in the indented area of the upper pivot arm Torque the four mounting screws to 300 inch pounds Page 62 C556 Elliptical Fitness Crosstrainerl Procedure 7 20 Replacing the Stub Tensioner 1 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 2 Remove the rear cover 3
44. nsioning gauge reads Turn both tension bolts more than 21 pounds counterclockwise in equal quarter turn increments until the belt tensioning gauge reads 19 21 pounds 1 4 deflection Verify that the belt alignment is still correct by performing the procedure in step 4 When both the step pulley tension and alignment are correct use pliers to bend the tension bolt locking tabs into the locking position The input pulley tension must now be checked and corrected if necessary There is not sufficient room to use the belt tension gauge to set the input pulley belt tension It will be necessary to use the correctly tensioned step up belt as a comparison to set the input belt tension Using your finger press in on the center of the step up pulley belt to get a feeling of how much pressure it takes to deflect the belt a 1 4 Page 16 C556 Elliptical Fitness Crosstrainerl 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 Diagram 5 3 Stub Tensioner Stub Tensioner Stub Tensioner Axle Nut Stub Tensioner Adjustment Bolt 22 Loosen the stub tensioner axle nut slightly Turn the stub tensioner adjustment bolt clockwise to increase or counterclockwise to decrease the input belt tension 23 When the input belt tension is correct torque the stub tensioner nut to 2
45. ocedure 6 4 Troubleshooting the Speed Sensor Circuit Description The speed sensor is a hall effect sensor A magnet is mounted on the right hand crankarm and passes the hall effect sensor once per revolution The output from the speed sensor is a 5 Vdc square wave the frequency of which indicates the operating speed When a square wave output is not being generated by the speed sensor the system assumes the unit is not in use and removes resistance from the eddy current magnet system WARNING Before continuing with this procedure review the Warning and Caution statements listed in Section One Things You Should Know Procedure 1 Remove the rear cover Plug the unit into a wall outlet and set the on off switch in the on position Set the unit in the manual program and operate the unit If a stride rate is not displayed the speed sensor is not operative We shall use the presence of a stride rate to determine when the speed sensor is functioning normally 2 Amagnet must be installed in the crankarm that passes the speed sensor with it s south pole facing the speed sensor If the stride rate is not being displayed in step 1 verify that a magnet is installed in the crankarm associated with the speed sensor and that the south pole faces outward The magnet polarity may be checked with another magnet with known poles or a compass The north pole of the test magnet or the south facing needle should be attracted to the speed sensor magne
46. onnector Connect a replacement mid point connector between the two interconnect cables and retest the unit per Procedure 4 Replace the lower PCA shield rear cover Procedure 7 1 and the main column cover Procedure 7 27 If the unit still does function correctly contact Precor Technical Support Page 19 C556 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 Procedure 1 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 2 Attach the anti static wrist strap to your arm then connect the ground lead of the wrist strap to the units frame 3 Ifthe EFX powers up and functions normally until a particular key s is pressed skip to step 12 4 Ifa key depressed message is immediately displayed when the EFX is powered up continue with the next step 5 This condition may be caused by either the keypad or upper PCA Set the on off switch in the off position 6 Remove the four screws that fastens the display housing front panel to the display housing backing plate These screws are located on the rear of the display housing bac
47. or cable from the lower PCA Diagram 7 8B Speed Sensor Mounting version 2 12 Speed Sensor Remove the mounting nut that secures the speed sensor assembly to the frame Thread the speed sensor out of the frame Replacing the Speed Sensor Assembly 13 14 15 16 Thread the replacement speed sensor into the frame as far as possible Rotate the crankarm until the magnet in the crankarm is next to the speed sensor Thread the speed sensor out of frame as required to set the distance between the speed sensor and the magnet to 1 4 inch Replace mounting nut that secures the speed sensor to the frame Reconnect the speed sensor cable to the lower PCA Re install the left rear cover then check the operation of the C546 as described in Section Four Page 52 C556 Elliptical Fitness Crosstrainerl Procedure 7 14 Replacing the Eddy Current Magnet Assembly Removing the Magnet Assembly 1 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 2 Remove the rear cover 3 Disconnect the magnet cable from the magnet assembly 4 Remove the bolts that secure the magnet assembly to the drive unit Remove the magnet from the drive unit Diagram 7 9 Eddy Current Magnet Centering Bolts Magnet Mounting Bolt Eddy Curren
48. ove the rear cover 3 Remove the stairarm assemblies as described in Procedure 7 17 4 Remove the crankarm assemblies as described in Procedure 7 8 5 Remove the magnet assembly as described in Procedure 7 14 6 Remove tension from the drive belts and remove the input drive assembly per Procedure 7 11 steps 6 to 9 7 Slide the step up and input belts off of their pulleys and remove the input drive assembly from the drive unit See Diagram 7 6 8 Remove the left and right tension bolts locking tabs and brackets 9 Carefully lay the EFX on it s side Remove the bolts that retain mounting plate for the input module and on off switch Swing the mounting plate away from the drive unit 10 Slide the step up pulley assembly with both the step up and input belts out of the drive unit 11 Place the step up and input belts on the replacement step up pulley assembly 12 Set the replacement step up pulley assembly with the step up and input belt at it s mounting position in the drive unit Replace the tensioning bolts locking tabs and brackets removed in step 8 Thread the left and right tension bolts into the step up pulley shaft 13 Mount the input drive assembly and complete this procedure per Procedure 7 11 steps 10 14 Page 50 C556 Elliptical Fitness Crosstrainerl Procedure 7 13 Replacing the Speed Sensor Assembly Removing the Speed Sensor Assembly 1 Set the on off off switch in the off position then
49. owing preventive maintenance schedule After Each Use e Turn off and unplug the EFX Wipe down the covers handlebars stairarm wheels and stairarm ramps with a damp cloth Daily Maintenance Clean the EFX s frame covers stairarms stairarm ramps and stairarm wheels using water or Simple Green Wipe the surface of the electronic console with a damp sponge or soft cloth Dry with a clean towel Simple Green is the only cleaning solution that has been tested and approved for use on the C556 ramps Use of any other cleaner may cause degradation of the ramp anodizing and void the ramp warranty The use of an acid citric based cleaner will cause ramp anodizing damage and is not authorized by Precor Weekly Maintenance Vacuum underneath the EFX following these steps 1 Turn off the EFX with the circuit breaker then unplug it from the wall outlet 2 Place the EFX on its side Note Place a drop cloth under the EFX to protect the flooring and to ensure that the EFX handrail is not scratched or damaged 3 Vacuum the rug or damp mop the floor 4 Make sure that the floor is dry before returning the EFX to an upright position Page 5 C556 Elliptical Fitness Crosstrainer Quarterly Maintenance 1 2 3 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 cal
50. per interconnect cable into the replacement upper main column and fasten the display housing to the replacement upper main column with the screws removed in step 7 Page 68 C556 Elliptical Fitness Crosstrainerl Draw the upper interconnect cable out of the access hole at the bottom of the upper main column as shown in Diagram 7 20 Set the upper main column at it s mounting position hand start the four mounting bolts removed in step 5 Torque the mounting bolts to 100 inch pounds Connect the upper interconnect cable to the mid point connector Carefully push the interconnect cables into the upper main column access hole Replace the mid point cover per Procedure 7 25 Remove the two covers halves and the gasket Fit the two replacement cover halves and gasket at their mounting positions Hand start the four mounting screws removed in step 2 Hold the cover halves in place and tighten the four mounting screws Page 69 C556 Elliptical Fitness Crosstrainer Procedure 7 25 Replace the Rear Cover 1 For version 1 units continue with step 2 For version 2 units skip to step 9 2 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 3 There are two mounting screws on each side and one mounting screw in the front and rear of the rear cover Remove
51. power is applied troubleshoot the EFX per Procedure 6 6 4 Remove two screws from the bottom of the EFX frame that secure the power entry module mounting bracket to the frame Swing the power entry module mounting bracket away from the frame to gain access to the power entry module wiring 5 Remove the wires from the power entry module a brown and blue wire a brown and blue jumper Remove the ground wire green from the ground stud Page 39 6 C556 Elliptical Fitness Crosstrainer Note the orientation of the power entry module The new module must be positioned with the same orientation Remove the screws that secure the power entry module to the power entry module mounting bracket Replacing the Power Entry Module T 10 11 Position the new power entry module at its entry position Make sure that the module is oriented correctly Install the screws that secure the power entry module to the power entry module mounting bracket Refer to Wiring Diagram 8 1 for 120V units or Wiring Diagram 8 3 for 240V units and reconnect the wiring removed in step 4 Fasten the power entry module mounting bracket to the EFX frame with the screws removed in step 4 Remove the fuses from the fuse drawer of the defective input power module Check the fuses as in step 3 and insert the fuses into the replacement fuse drawer Insert the fuse drawer into the input power module Check the operation of the EFX as described in Section Four
52. rame upright See Diagram 7 23 Replace and tighten the three screws that fasten the top cover section to the rear cover support Replace and tighten the two screws that fasten the top cover section to the front cover section Set the left cover section in it s mounting position replace and tighten the four screws that fasten the left cover section to the front cover section top cover section and rear cover support Set the right cover section in it s mounting position replace and tighten the four screws that fasten the right cover section to the front cover section top cover section and rear cover support Page 72 C556 Elliptical Fitness Crosstrainerl Procedure 7 26 Replacing a Power Entry Module Units manufactured after 10 15 2000 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 ine filter 1 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 2 Remove the rear cover per Procedure 7 1 Diagram 7 24 Power Entry Module x a 7 E 22 TAN ay x ate ee Ie a Fuse Blue Wire Access Door Brown Wire On Off iz Switch A C Input Green Wire 3 Remove the blue wire from terminal D and the brown wire from terminal A of the power entry module 4 Remove the two screws that mount the power entry module to the rear cover suppor
53. rarily install a spare jumper on J14 of the heart rate PCA hand held priority Set the on off switch in the on position and repeat the procedure in step 6 23 If the hand held signal is now being accept something in the near vicinity is radiating RF energy that is being received by the chest strap portion of the heart rate PCA Disabling the chest strap signal proves that it is radiated energy that is causing the problem 24 The source of the radiated energy must be determined and relocated so that it no longer affects the heart rate PCA Televisions cell phones Cardio theatre receivers etc are possible sources of radiated energy Page 30 C556 Elliptical Fitness Crosstrainerl 25 Set the on off switch in the off position and remove the spare jumper from J14 of the heart rate PCA Re locate all potential sources of radiation Set the on off switch in the on position and repeat the procedure in step 6 Page 31 C556 Elliptical Fitness Crosstrainer Procedure 7 1 Replacing the Mid Point Cover 1 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 2 Remove two screws that fasten the upper mid point cover Remove two screws that fasten the lower mid point cover Remove both halves of the cover and the split gasket See Diagram
54. receiver verify the operation of the chest strap transmitter furnished with the unit If the Polar heart rate test receiver does not receive a signal replace the chest strap transmitter Page 28 5 C556 Elliptical Fitness Crosstrainerl Set the on off switch in the off position and remove the display housing Verify the internal chest strap setting is set as shown in Diagram 6 4 Verify that a ferrite bead is installed on the heart rate PCA to upper PCA cable If the above procedures did not correct the problem replace the heart rate PCA No hand held reading Normal chest strap reading 6 Set the on off switch in the on position and access the diagnostic program Procedure 3 2 Advance to the heart rate display portion of the diagnostic program Verify that a hand held signal is not being accepted by firmly grasping both the right and left hand held contacts on the handlebars Cover as much of the contact surface area with your hands as possible without moving your hands you should receive a heart rate reading within ten seconds If a hand held signal is not being accepted set the on off switch in the off position Temporarily install a spare jumper on J14 of the heart rate PCA hand held priority Set the on off switch in the on position and repeat the procedure in step 6 If the hand held signal is now being accept something in the near vicinity is radiating RF radio frequency energy that is bein
55. rocedures with the covers removed remove jewelry especially from ears and neck tie up long hair remove neck ties and do not wear loose clothing 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 lt is possible to seriously pinch a finger between the crankarm and stairarm The stairarms should be removed before operating the crankarms by hand Page 2 C556 Elliptical Fitness Crosstrainerl Caution statements are intended to prevent damage to the EFX as a result of the current activity Caution statements included in this manual are listed below When itis necessary to lift or move the EFX ensure that the EFX has adequate support and that you use proper lifting techniques Safety guidelines you should know and follow include Read the owner s manual and follow all operating instructions e Operate the EFX on a solid level surface Page 3 C556 Elliptical Fitness Crosstrainer e Visually check the EFX before beginning service or maintenance operations If it is not completely assembled or is damaged in any way exercise extreme caution while operating and checking the EFX When operating the EFX do not wear loose clothing Do not wear shoes with heels or leather soles Check the soles of your shoes and remove any embedded stones Tie long hair back Do not rock the unit Do not st
56. speed sensor per Procedure 6 3 If the problem is incorrect resistance skip to step 7 2 Setthe 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 The voltage should measure approximately 29 5 Vdc If the voltage is missing or significantly low skip to step 4 If the voltage is correct continue with step 3 3 Set the on off switch in the off position Check the magnet wiring per Diagram 8 1 If any of the magnet wiring is reversed or incorrect the resistance will be affected If you have performed all of the above tests and there is still no resistance call Precor Technical Support 4 Set the on off switch in the off position Using an ohmmeter measure between the M and M terminals of the lower PCA The measurement should be approximately 90Q to 1100 If the measurement is open o check the connections at both magnets and the lower PCA 5 Ifall of the wiring connections are good and there is still no resistance 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 6 If you have performed all of the above tests and there is still no resistance call Precor Technical Support
57. t 3 Using a DC voltmeter measure the voltage between terminal 1 red wire and terminal 5 black wire on the speed sensor connector The measurement should be approximately 5 Vdc If the voltage is correct skip to step 5 If the voltage is missing or significantly low disconnect the speed sensor connector from the speed sensor and repeat the measurement on the connector If the voltage is now correct replace the speed sensor If the voltage is still missing or significantly low continue with step 4 4 Repeat the measurements in step 3 at terminals 1 and 5 of J8 on the lower PCA If the voltage is missing or significantly low replace the lower PCA If the voltage is now correct replace the speed sensor assembly 5 Using a DC voltmeter measure the voltage between terminal 1 red wire and terminal 2 green wire on the speed sensor connector Slowly rotate the flywheel as you monitor the voltage The measurement should switch between approximately 0 5 Vdc and approximately 4 25 Vdc If the voltage is correct skip to step 6 If the voltage does not switch the voltage is constantly low or high as the flywheel is slowly rotated replace the speed sensor If the voltage switches correctly correct but the stride rate is still not displayed when the unit is operated replace the lower PCA Page 24 C556 Elliptical Fitness Crosstrainerl Repeat the measurement in step 5 at terminals 1 and 2 of J8 on the lower PCA If the voltage is missin
58. t 5 Open the fuse compartment and remove both fuses See Procedure 7 27 Check both fuses with an ohmmeter They should read approximately 1Q or less Replace any fuse that reads significantly high 6 Install the tested fuses from step 5 in the replacement power entry module 7 Setthe replacement power entry module at it s mounting position secure the power entry Page 73 10 11 C556 Elliptical Fitness Crosstrainer module with the screws removed in step 4 Replace the wires removed in step 3 Connect the blue wire to terminal D and the brown wire to terminal A of the power entry module Replace the cover per Procedure 7 1 Insert the A C line cord in the power entry module and the A C outlet Set the on off switch in the on position and test the EFX per Section Four Page 74 C556 Elliptical Fitness Crosstrainerl Procedure 7 27 Replacing a Power Entry Module Fuse Procedure 1 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 2 Using a thin bladed screwdriver carefully pry the fuse access door open See Diagram 1 25 Diagram 7 25 Power Entry Module Fuse Fuse Module Fuse Paros bi AO wy tui q gan ES R A 1 TA EFE Al S meong F sae 4 e ee S rubr is Power Entry Module Fuse Access Door 3 Using the thin bladed scre
59. t Magnet Eddy Current A Disk Replacing the Magnet Assembly 5 Position the magnet assembly at its mounting position 6 Replace and hand tighten the magnet assembly mounting bolts Torque the magnet assembly mounting bolts to 60 in lbs Page 53 C556 Elliptical Fitness Crosstrainer Check that the eddy current disk is centered between the legs of the eddy current magnet If not loosen the centering bolts see Diagram 7 9 and center the eddy current magnet on the eddy current disk Torque the centering bolts to 150 inch pounds Reconnect the magnet cable to the magnet assembly Re install the rear cover then check the operation of the EFX as described in Section Four Page 54 C556 Elliptical Fitness Crosstrainerl Procedure 7 15 Replacing a Wheel Assembly Procedure Set the on off switch in the off position then unplug the power cord from the wall outlet 2 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 8 If the wheel being replaced has a small 8 32 mounting screw continue with step 3 WARNING Before continuing with this procedure review the Warning and Caution statements listed in Section One Things You Should Know 3 5 Because the replacement wheels are improved both the right and left wheel should be replaced Additionaly t
60. t secure the upper PCA to the display housing front panel Note Package the upper PCA in an anti static bag and document the problem as described in Procedure 3 6 Documenting Software Problems Page 33 C556 Elliptical Fitness Crosstrainer Diagram 7 2 Display Housing Front Panel Rear View Interconnect Upper PCA Cable Connector Keyboard Connector 8 Position the upper PCA at its mounting location on the display housing front panel refer to Diagram 7 2 Replace and tighten the upper PCA mounting screws 9 Reconnect the keyboard cable to the upper PCA 10 Reconnect the upper interconnect cable to the upper PCA 11 Remove the ground lead of the wrist strap from the EFX frame then remove the wrist strap from your arm 12 Position the display enclosure on the display plate Replace and tighten the display mounting screws 13 Check operation as described in Section Four Page 34 C556 Elliptical Fitness Crosstrainerl Procedure 7 3 Replacing the Lower PCA Removing the Lower PCA 1 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 2 3 Remove the rear cover Attach the wrist strap to your arm then connect the ground lead of the wrist strap to the EFX frame Remove the shield from the lower PCA Disconnect the cables from the lower PCA Remove the screws that secur
61. these six mounting screws 4 Remove the two screws from the cover badge on the top of the cover See Diagram 7 21 Diagram 7 21 Rear Cover Badge Badge Mounting Screw 5 Remove the cover from the unit 6 Set the replacement at it s mounting position The cover should be on the outside of all of the cover s mounting tabs 7 Hand start all eight mounting screws from steps 2 and 3 8 Tighten the eight mounting screws Page 70 C556 Elliptical Fitness Crosstrainerl Set the on off switch in the off position then unplug the power cord from the A C outlet 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 22 If you are removing either the right or left cover section it is only necessary to remove the four screws that fasten the cover section Diagram 7 22 Frame Cover 12 13 Mounting Screw If you are replacing either the front or top cover section you must first remove the left and right cover sections and then remove the cover section being replaced If you are removing the top cover See Diagram 7 23 remove the two phillip screws that fasten the top cover section to the frame upright Remove three screws that fasten the top cover section to the rear cover support Remove two screws that fasten the top cover section to the front cover section If you are remov
62. unds Using a mallet or dead blow hammer tap the other pillow block bearing until the edge of the pillow block bearing is parallel with the edge of the frame upright Replace the bolts in the other pillow block bearing and torque to 500 in pounds Diagram 7 7 Drive Unit Alignment 12 13 14 Frame Upright Place the input belt and step up belt in place on their pulleys Tighten both belts enough so that they don t slip and are roughly aligned The tensioning and alignment of the belts will be completed in a later step Replace the magnet assembly per procedure 7 13 Complete the installation drive belt alignment and tensioning per Procedure 5 3 Page 48 C556 Elliptical Fitness Crosstrainerl Replace the crankarms per Procedure 7 7 The crankarms must be parallel to the frame uprights See Diagram 7 6 If necessary loosen the four drive unit mounting bolts align the drive unit and torque the drive unit mounting bolts to 500 inch pounds If the drive units was moved in step 15 re check the drive belt alignment and tensioning per Procedure 5 3 Replace the cover Page 49 C556 Elliptical Fitness Crosstrainer Procedure 7 12 Replacing the Step Up Pulley Assembly 1 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 2 Rem
63. 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 Note The speed sensor magnet must be mounted in the right hand crankarm on version 1 units and in the left hand crankarm of version 2 units The speed sensor magnet must be mounted in the correct crankarm or speed sensor will not function 2 For version 1units continue with step 3 For version 2 units skip to step 10 3 Remove the rear cover 4 Disconnect the speed sensor cable from the lower PCA See Diagram 7 8A Diagram 7 8A Speed Sensor Mounting version 1 Speed _ Sensor Mounting Nut 5 Remove the mounting nut that secures the speed sensor assembly to the frame Thread the speed sensor out of the frame Replacing the Speed Sensor Assembly 6 Thread the replacement speed sensor into the frame as far as possible Rotate the crankarm until the magnet in the crankarm is next to the speed sensor Thread the speed sensor out of frame as required to set the distance between the speed sensor and the magnet to 1 4 inch Page 51 10 11 C556 Elliptical Fitness Crosstrainer Replace mounting nut that secures the speed sensor to the frame Reconnect the speed sensor cable to the lower PCA Re install the rear cover then check the operation of the C546 as described in Section Four Remove the left rear cover Disconnect the speed sens
64. ver per Procedure 7 1 6 Disconnect the upper interconnect cable from the mid point connector See Diagram 6 2 Tape the end of the replacement interconnect cable with the to the upper end of the old interconnect cable display housing end 7 Carefully pull the old interconnect cable out of the mid point access hole while feeding the new interconnect cable into the unit When the new cable is fully into the unit remove the tape and discard the old interconnect cable Connect the upper interconnect cable to the mid point connector and push them into the access hole 8 Connect the upper interconnect cable to the upper PCA Replace the display housing per Procedure 7 2 steps 7 to 12 9 Remove the ground lead of the wrist strap from the EFX frame then remove the wrist strap from your arm 10 Check the operation of the EFX as described in Section Four Page 37 C556 Elliptical Fitness Crosstrainer Replacing the Lower Interconnect Cable 11 12 13 14 15 16 17 Remove the rear cover Remove the shield from the lower PCA Disconnect the interconnect cable from the lower PCA connector J5 See Diagram 7 3 The upper and lower interconnect cables are connected at the mid point of the main column Remove the mid point column cover per Procedure 7 1 Disconnect the lower interconnect cable from the mid point connector See Diagram 6 2 Tape the replacement interconnect cable to the old interconnect cable at the
65. wdriver carefully pry the fuse module out of the power entry module 4 The fuse module contains two fuses carefully pry one or both fuses out of the fuse module as required 5 Snap the replacement fuse s into the fuse module 6 Slide the fuse module back into the power entry module and close the fuse access door 7 Insert the A C line cord in the power entry module and the A C outlet Page 75 C556 Elliptical Fitness Crosstrainer 8 Set the on off switch in the on position and test the EFX per Section Four Page 76 C556 Elliptical Fitness Crosstrainerl Procedure 7 28 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 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 proper 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 alignm
66. wo new wheel covers 43702 504 will be required accomodate larger wheel mounting bolts The wheel assembly is provided as an assembly that includes both wheels and replacement wheel axle screws Remove the four wheel cover mounting screws wheel cover from the stairarm and discard the wheel and cover Mount the replacement wheel cover on the stairarm with the screws removed in step 4 Diagram 7 10 Wheel Assembly Mounting Screws 6 Wheel Axle Screw or Bolt Wheel Assembly Stairarm __ Wheel Cover Es Wheel Cover Install the replacement wheel assembly in the wheel cover Install and hand tighten the two wheel axle bolts Torque the wheel cover bolts to 15 foot pounds Page 55 10 C556 Elliptical Fitness Crosstrainer Plug the power cord into the wall outlet set the on off switch in the on position and 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 Install the replacement wheel assembly in the wheel cover Install and hand tighten the two wheel axle bolts Torque the wheel cover bolts to 15 foot pounds Plug the power cord into the wall outlet set the on off switch in the on position and thoroughly test the operation of the wheel assemblies Page 56 C556 Elliptical Fitness Crosstrainerl Procedure 7 16 Replacing a Stairarm Peda

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