Precor C354, C354i Service Manual

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C534. C534i Self Powered Elliptical Fitness Crosstrainerl

C534, C534i Elliptical Fitness Crosstrainer

Warning: This service manualisfor use by Precor trained service providers only.

Ifyou are nota PrecorTrained Servicer, you must not attemptto serviceany 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.

Unauthorized Reproduction and Distribution Prohibited

Law

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

• Section One - Things

You

Should Know

Right, Left, Front, and Back Conventions

this manual, right, left, front, and back are from the perspective of a user standing on the EFX,

facing the display enclosure.

General System Information

• The generator performs three functionsinthe 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. Lastly, one of the generators three phase output windings is monitored to determine when the unit is

use and when it is idle. This system also determines the stride rate by determining the operating speed (output frequency) of the monitored generator winding.

Warning and Caution Statements and General Safety Guidelines

Warning statements indicate a particularly dangerous activity. Warning statements you will find in this manual include:

•

• Ifthe EFX has been in recent use, the load resistors and load resistor mounting bracket may

be extremely hot.

• Because this is a self powered unit, it will either be necessary to either equip the unit with the optional external power supply or have an assistant pedal on the unit while voltage measurements are being taken. Because of the danger of working on the unit while it

motion using the optional external power supply

strongly recommended.

• When the unit is used, stairarms are in motion, the generator will operate and produce potentially hazardous voltages even when the battery

disconnected.

• To remove power from the EFX, the optional external power supply (when equipped) must be disconnected from the wall outlet and the red (positive) lead must be disconnected from the battery. Always ensure that the EFX external power supply is unplugged from the wall outlet and the red (positive) lead is removed from the battery when you inspect or adjust the EFX,

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 cover(s) removed.

•

During service operations you will be very close to moving machinery and voltage bearing components. When you perform maintenance procedures with the covers removed, remove

jewelry (especially from ears and neck), tie up long hair, remove neck ties, and do not wear loose clothing.

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Exercise caution when touching any wire or electrical component during EFX operation.

• A pinching hazard exists when the unitisoperated 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.

Caution statements are intended to prevent damage to the EFX as a resultofthe current activity. Caution statements included in this manual are listed below:

• When it is 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.

• Operate the EFX on a solid, level surface.

• 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 stand or climb on the handlebars, display enclosure,orcover.

• Do not set anything on the handlebars, display enclosure,orcover. Never place liquids on

any partofthe EFX, while performing service.

• To prevent electrical shock, keep all electrical components away from water and other

liquids.

• Do not use accessory attachments that are not recommended by the manufacturer-such

attachments might cause injuries.

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

• General Information

For the latest exploded view, part number and part pricing information, visit the Precor dealer website at "www.precor.comlconnection.

Tools Required

•

Multimeter Anti-static kit 4"

- 6" gearpuller Precor part number 20030-108 belt gauge US and metric end wrench set US and metric socket wrench set

Torque wrench, 200 in.llbs. Torque wrench, 200 ft./Ibs

Allen wrench set Screwdriver set 7/16" allen key, socket wrench mounted Straight edge

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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 following preventive maintenance schedule.

After Each Use

• Unplug the optional external power supply (when equipped) from the AC outlet.

• 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 a 30:1

solution of Simple Green® and water. Wipe the surface of the electronic console with a

damp sponge or soft cloth. Dry with a clean towel. A 30:1 solution of Simple Green® and water

is the only cleaning solution that has been tested and approved for use on the C534 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

not authorized

by Precor.

Weekly Maintenance

• Vacuum underneath the EFX, following these steps:

1.Unplug the optional external power supply (when equipped) from the AC outlet.

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.

Vacuum the rug or damp mop the floor.

Make sure that the floorisdry before returning the EFX to an upright position.

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• Quarterly Maintenance

1. Remove the rear covers.

Check the step up and input belt alignment and tension asinProcedure 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:

• 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 isinoperation?). If

not, see Procedure 6.3 (C534) or Procedure 6.4 (C534i).

• Visually inspect the drive belts for cracks, fraying or excessive wear.

• When furnished, inspect the optional power supply cords. If a power supply cord(s)

damaged, install a new power supply.

•

Visually examine all wires and check connectors and wire connections. Secure connections and replace wiring as necessary.

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Procedure

3.1

- Software Access Codes

The C534 and C534i use the standard access codes to provide access to the various software features.

using the standardized access codes the keys are hypothetically numbered left to

right with key

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 C534 display does not utilize key positions

#2 and #3, however, they must be counted to correctly locate keys #4

through

#6. On the display, key

is the RESET key and key #4 is the QUICK START key.

Standard

Access

Codes

•

Diagnostics Odometer Club Settings

Diagram

3.1

- C534 Display Panel

Keys RESET

,5,1

,7,6,5,7,6,1 Keys RESET,6,5 Keys RESET,5,6,5,1 ,5,6,5

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C534. C534i Self Powered 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

• Battery Test

•

RPM

Test

• Brake Test

Procedure

Start pedalling and continue to pedal as you perform step

With the PRECOR banner scrolling, press keys RESET,5,1,7,6,5,7,6,1., sequentially. The message HARDWARE VALIDATION will be displayed for a few seconds. 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. The message KEYBOARD TEST will be displayed followed by a graphical representation of

each key position on the display housing. As each key

the display is pressed the key

representation is turned "off', indicating that the key

functioning. Check each keyinthis manner, including the numeric keyboard. Press and hold the ENTER key for 2 seconds to advance to the heart rate test.

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

installedinthe C534 and a

chest strap transmitter or a test transmitter is being used. If the heart rate option

not

installed

the C534, the message NO HEART RATE RECEIVER will be displayed instead

of the heart rate readings. Press the ENTER key to advance to the brake test.

The message BATTERY TEST will be displayed followed by the battery voltage. Press the

ENTER key to advance to the RPM test.

The message RPM TEST will be displayed followed by the pulse (power bit) reading and the

RPM

reading. Press the ENTER key to advance to the brake test.

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.

•

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Procedure 3.3 - Displaying the Odometer

Procedure

1. Start pedalling and continue to pedal as you perform step 2.

2. With the PRECOR banner scrolling, press keys RESET,6,5, sequentially.

The message INFORMATION DISPLAY will be displayed for a few seconds.

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

to kilometers by dividing by 1392.5. Press the ENTER key to advance to total strides.

The message TOTAL STRIDES will be displayed followed by the total number of strides

logged on the EFX. 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 C534 has beeninuse. Press the ENTER key to advance to software version.

The message SOFTWARE VERSION will be displayed followed by the software versions of the upperand lower PCA's. For example, UPPER 1.01 LOWER 1.01. Press the ENTER key to advance to error log.

The message ERROR LOG will be displayed followed by the error in log position1.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 record 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

pushed down one position and the error in position 10, if any,islost. Use the

and£.

keys 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.

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

• Procedure 3.4 - Club Settings

Start pedalling and continue to pedal as you perform step

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

language. Use

the"

and...

keys to select the language preference. Press the ENTER

key to advance to units of measurement.

The message SELECT UNITS will be displayed followed by the currently selected unit of

measurement. Use

the"

and

...

keys to select either U.S. Standard

METRIC

measurements. Press the ENTER key to advance to maximum workout time.

•

The message SET MAX WORKOUT TIME will be displayed followed by the currently selected maximum workout time. Use

the"

and

...

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.

The message SET MAX PAUSE TIME will be displayed followed by the currently selected maximum pause time. Use

the..

and

...

keys to select the maximum pause time. The

maximum pause time

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.

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Procedure 3.5 - Documenting Software Problems

When a problem is found with either the software or upperor 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

• 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.

•

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

• 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.

When the PRECOR 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.

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

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

troubleshoot per Section

Press the RESISTANCE A key until you reach Resistance Level 20. Operate the EFX for

another

2-3

minutes.

If the resistance of the EFX does not change or the EFX operation feels inconsistent with Resistance Levels 1 and 10, troubleshoot per Section

10. Check the LED's mounted on the upper PCA and the function keys displayed on the electronic console by performing Procedure 3.2.

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Procedure

5.1

- Measuring the Resistance

a Generator

(C534, only)

Caution

Remove power from the EFX before you measure generator resistance.

Procedure

1. Remove the rear cover and disconnect the red battery lead from terminal M6ofthe lower PCA.

WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know.

2. Set the ohmmeter to a range that will conveniently read up to

Remove the three generatoroutput leads from the lower PCA, brown from terminal M3, blue from terminal M4 and violet from terminal M5.

4. With an ohmmeter, read between the brown and blue leads, blue and violet leads and the brown and violet leads removed in step

Each of the three readings should be between

Q and 27

If any of the readings are significantly highorsignificantly low, replace the

generator.

Diagram

5.1

Lower

peA

Lift

Connector

•

Reconnect the generator leads to the lower PCA as follows: violet to M5, blue to M4 and brown to M3.

Reconnect the red battery lead to terminal M6 of the lower PCA.

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

• Procedure 5.2 - Measuring the Resistance

a Generator

(C534i, only)

Caution

Remove power from the EFX before you measure magnet resistance.

Procedure

1. 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.

Set the ohmmeter to a range that will conveniently read up to 50 .0.

•

Remove the six phase generator connector from the lower PCA, refer to Diagram 5.2, below.

With an ohmmeter, read between terminals 1 & 2, terminals 1 & 3, terminals 1 &5,terminals

and terminals 1 &7 on the six phase generator connector (J1). Each of the six

readings should be between 36

nand

39 .0.

If any of the readings are significantly high or significantly low, remove the intermediate cable from the generator and perform the same measurements as in step 4 on the generator connector. If the reading are now correct check and or replace the intermediate cable.refer to Diagram 5.4. If the readings are still incorrect, remove the six phase generator.

•

Six

Phase

Generator

Prom

Battery

Adapter

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Replace the generator per Procedure 7.17. Reconnect the intermediate cable removed

step 5 to the replacement generator and the lower PCA.

Reconnect the

red

battery lead to terminal

of the lower PCA.

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

• Procedure 5.3 - Inspecting and Adjusting Belt Tension

Procedure

1. 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.

WARNING

Before continuing with this procedure, review the Warning and Caution statements listed in Section One, Things You Should Know.

WARNING

If the EFX has beeninrecent use, the load resistors and mounting bracket may be extremely

hot.

2. Remove the three screws that fasten the load resistor assembly and shield to the frame upright. Rotate the load resistor assembly 180 degrees and set it on the top of the frame upright.

•

Place a 20030-108 or equivalent belt gauge on the input belt as shown in Diagram 5.3.

Diagram 5.3 - Input Belt Tension Measurement

Step Up Adjustment

Pulley Belt Gauge

Bolt-l--------~

The belt gauge should read 100 Ibs. If the belt tensionissignificantly 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. When adjusting the tension, turn

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C534, C534i Self Powered Elliptical Rtness Crosstrainerl

both bolts equal amounts. When the adjustment is complete the step up pulley shaft must remain perpendicular to the frame and drive belt. Turning the adjustment bolts clockwise will increase belt tension, turning the adjustment bolts counter-clockwise will decrease belt tension.

Changing the tension of the input drive belt will also affect the tension of the generator belt. If the input belt tension has been changed, continue with step 7.

Place a 20030-108

equivalent belt gauge on the generator belt as shown in Diagram 5.4.

•

Diagram 5.4 - Generator Belt Tension Measurement

Adjustment

Nut

Jam

Nut

The belt gauge should read 60 Ibs. If the generator belt tension is significantly high or low, it may be adjusted using the adjustment bolt shown

Diagram 5.3. First loosen, but do not

remove the four generator mounting bolts and the jam nut. Hold the adjustment bolt head with one wrench and turn the adjustment nut to change the belt tension. When the tension is correct, tighten the jam nut. Tighten and torque the four generator mounting bolts to 150 inch pounds.

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If either the input pUlley belt or the generator belt is being replaced with a new belt, the belt tension should be set 20 Ibs. higher than the previous readings. Therefore a new input pulley belt should be tensioned to 120 Ibs. and a new generator belt should be tensioned to 80 Ibs. Over time and use the belts will "relax" and the tensions will be as stated in steps 4 and

Reconnect the red battery lead to terminal M6 of the lower

peA.

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Procedure

6.1

- Troubleshooting the Lower and Upper Interconnect Cable

Typical symptoms associated with a defective interconnect cableiseither 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.

If you are troubleshooting an error 30,31 or 32 continue with step3,otherwise see Procedure 6.3 (C534) or Procedure 6.4 (C534i).

Pry the end cap out of the front of the frame base tube (See Diagram 6.1).

Carefully withdraw both cables and mid-point connector.

•

Diagram

6.1-Interconnect

Cables and

Mid-Point

Connector

Lower

Intercon

nect:--iPt----:--=~'-'-----r--_I~./

Cable

End Cap

-:'--'-f--~

Upper Interconnect

Cable

•

Disconnect both cables from the mid-point connector and replace the mid-point connector with a known good mid-point connector. If the mid-point connector does not correct the problem, replace the original mid-point connector and continue with step

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

Remove the rear cover. Disconnect the lower interconnect cable from the lower PCA and the mid-point connector. Substitute a known good interconnect cable from the lower PCA to the mid-point connector. It

not necessary to route the test interconnect cable through the

frame tube, for convenience route it externally.

If the lower interconnect cable corrects the problem, replace the cable per Procedure 7.3. If the lower interconnect cable does not correct the problem, re-connect the original lower interconnect cable to the lower PCA and mid-point connector and continue with step

7. Remove the upper display housing per Procedure 7.1, steps 1 to 4. Disconnect the upper interconnect cable from the mid-point connector. Substitute a known good interconnect cable from the upper PCA to the mid-point connector. It

not necessary to route the test

interconnect cable through the frame tube, for convenience route it externally.

If the upper interconnect cable corrects the problem, replace the cable per Procedure 7.3. If the upper interconnect cable does not correct the problem, re-connect the original upper interconnect cable to the mid-point connector and continue with step

Replace the upper PCA per Procedure 7.1, steps 9 to 11.

10. If you have performed all of the procedures above and have been unable to correct the problem, call Precor customer service.

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Procedure 6.2 - Troubleshooting the Keypad and Upper

peA

If the function keys on the electronic console are unresponsive, the problem

may

be either the

upper PCA

keypad.

The

keys on this unit are touch sensitive keys. It is necessary to use the

keypad diagnostics to troubleshoot the key functions.

WARNING Before continuing with this procedure, review the Warning and Caution statements listed in Section One.

•

Attach the anti-static wrist strap to your arm, then connect the ground leadofthe wrist strap to the units frame.

If the EFX powers up and functions normally until a particular key(s) is pressed, skip to step

12.

If a Error 5 "key depressed" message is immediately displayed when the EFX is powered up, continue with the next step.

This condition

may

be caused by either the keypadorupper

PCA.

Remove the five screws that fasten the display housing front panel to the display housing backing plate. These screws are located on the rear of the display housing backing plate.

Lift the display housing front panel off of the display housing backing plate. Remove the keypad connector from the upper PCA. See Diagram 6.2.

•

Diagram 6.2 - Upper

peA

& Keypad

Connector--

UpperPCA

Keypad

Connector

Keypad

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C534, C534i Self Powered Elliptical Fitness Crosstrainer

•

Set the on/off switch in the "on" position.

If a Error 5 "key depressed" messageisimmediately displayed when the EFX is powered up, replace the upper PCA.

If a Error 5 "key depressed" messageisnot displayed when the EFXispowered up, replace the display housing front panel. The display housing front panel is equipped with the keypad.

10. If you have performed all of the procedures above and have been unable to correct the

problem, call Precor customer service.

11. 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.

12. Test the keypad per Procedure 3.2, step

13. 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.

•

14. 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.

15. If you have performed all of the procedures above and have been unable to correct the

problem, call Precor customer service.

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Procedure 6.3 - Upper Display does not Illuminate (C534,

only)

1. Because thisisself powered unit, the display will not illuminate until it is used or the option external power supply

equipped. If the optional external power supply is equipped, the

display should be constantly illuminated. If the optional external power supply

not equipped, the unit must be used at a stride rate of 40 strides per minute or higher for the display to illuminate.

2. If the optional external power supply is not equipped, skip to step 5.

Disconnect the optional external power supply from the EFX and measure between the inner and outer sleeves of the power supply's output jack with a DC voltmeter. You should measure approximately 18 VDC.

If the voltage measured in step 3 was significantly low, replace the optional external power

supply. If the voltage measured

step 3 was 0 Vdc, disconnect external power supply from its AC outlet and measure the voltage at the AC outlet. If the AC outlet voltageisnormal replace the optional external power supply. If the AC outlet voltage

significantly low or 0

Vdc, the AC system must be inspected by an electrician .

Troubleshoot the generator per Procedure 6.5 (C534) or Procedure 6.6 (C534i).

If the generator was found to be good, the problem will be in either the lower PCA, upper PCA orthe upper to lower PCA interconnect cables.

Warning

Because this is a self powered unit, it will either be necessary to either equip the unit with the optional external power supply or have an assistant pedal on the unit while voltage measurements are being taken. Because ofthe danger of working on the unit while it

isinmotion

using the optional external power supply is strongly recommended.

Remove the rear cover and disconnect the interconnect cable from the J2 connector of the lower PCA.

The following voltage reading must be taken while the unit isinmotion. Extreme care must be taken to keep meter leads, hands, etc. clear of all moving parts. Using a DC voltmeter, measure the voltage between pins 1 and 8 of the J2 connector or between TP20 and TP6. See Diagram 6.3. The voltage measured should be approximately 8.5 Vdc. If the voltage

significantly low, replace the lower PCA.

Reconnect the interconnect cable to the J2 connector of the lower PCA and repeat the

voltage measurementinstep8.The voltage measured should be approximately 8.5 Vdc. If the voltage

significantly low, the problem is in the upper PCA or the upper to lower PCA

interconnect cables.

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• Diagram 6.3 - Partial ViewofLower

peA

~.....;....-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.

12. If you have performed all of the above tests and are unable to resolve the problem, contact Precor customer support.

•

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Procedure 6.4 - Upper Display does not Illuminate (C534i,

only)

1. Because this is self powered unit, the display will not illuminate until itisused orthe optional external power supply

equipped. If the optional external power supply is equipped, the display should be constantly illuminated. If the optional external power supply is not equipped, the unit must be used at a stride rate of 20 strides per minute or higher for the display to illuminate.

If the optional external power supply is not equipped, skip to step

Disconnect the optional external power supply from the EFX and measure between the inner and outer sleeves of the power supply's output jack with a DC voltmeter. You should measure approximately

VDC.

If the voltage measuredinstep 3 was significantly low, replace the optional external power supply. If the voltage measured

step 3 was 0 Vdc, disconnect external power supply from its AC outlet and measure the voltage at the AC outlet. If the AC outlet voltage is normal replace the optional external power supply. If the AC outlet voltage

significantly low or 0

Vdc, the AC system must be inspected by an electrician.

Troubleshoot the generator per Procedure 6.5 (C524) or procedure 6.6(C524i).

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.

Warning

in motion

using the optional external power supply is strongly recommended.

Remove the rear cover and disconnect the interconnect cable from the J2 connector of the lower PCA.

The following voltage reading must be taken while the unit isinmotion. Extreme care must

be taken to keep meter leads, hands, etc. clear of all moving parts. Using a DC voltmeter, measure the voltage between TP13 (+5D) and TP4 (DGND). Refer to Diagram 6.5. The voltage measured should be approximately 5 Vdc. If the voltage is significantly low, replace the lower PCA. Additionally, the

DS1

LED should illuminate.

Reconnect the interconnect cable to the J2 connector of the lower PCA and repeat the voltage measurement in step8.The voltage measured should be approximately 5 Vdc. If the voltageissignificantly low, the problem is in the upper PCA or the upper to lower PCA interconnect cables.

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+ 58 hidden pages

Precor C354, C354i Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual