Precor Elliptical Fitness Crosstrainer EFX 5.25 User manual

5.23, 5.25 Elliptical Fitness Crosstrainer
Warning: This service manual is for use by Precor trained service providers only.
IfyouarenotaPrecorTrainedServicer,youmustnotattempttoserviceanyPrecorProduct;
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.
© 2008 Precor Incorporated
Unauthorized Reproduction and Distribution Prohibited By Law
20039-158

Section One - Things You Should Know
Right, Left, Front, and Back Conventions
In this manual, right, left, front, and back are from the perspective of a user standing on the EFX
5.23, 5.25, 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 a 5.23, 5.25 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.
• During service operations you will be very close to moving machinery and high voltage
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.
• Exercise caution when touching any wire or electrical component during EFX operation.
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:
• Notice the orientation notch on the lower PCA PROM. These components must be
positioned with the same notch orientation.
Safety guidelines you should know and follow include:
• Read the owner’s manual and follow all operating instructions.
• 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, or cover.
• Do not set anything on the handlebars, display enclosure, or cover. Never place liquids on
any part of the EFX other than a water bottle in the water bottle holder during normal

operation.
• To prevent electrical shock, keep all electrical components, such as the power cord and on/
off switch 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/connection.

Required Tools and Equipment
The following list is a summary of the tools and equipment required when you service Precor’s
EFX.
TOOLS EQUIPMENT
phillips and flat-head screwdrivers digital multimeter
standard and metric allen wrench sets
open-end wrench set Supplies
blue loctite
drive ratchet and ratchet set
socket drive allen set cable ties
chip puller Spares
rubber mallet data cables
snap ring pliers
100 ft./lb. torque wrench
300 in./lb. torque wrench
belt gauge (part # 20030-117)

Procedure 2.1 - Accessing the Service Mode
The EFX service mode software cycles through the following tests:
Upper and Lower Software Versions
Key Test
Factory Set
Display Test
Procedure
1. Plug the power cord into the wall outlet, then turn on the EFX with the on/off switch.
2. While pressing and holding the ENTER key, press the RESET, QUICK START and
RESISTANCE Skeys, sequentially.
Diagram 2.1 - 5.25 Display

3. SERVICE MODE PRESS ENTER will scroll across the display.
4. The S,Tkeys move the selection between the Key Test, Factory Set and the Display Test.
Key Test
5. When Key Test is displayed, press the ENTER key to enter the key test mode.
6. Press each key on the display, the key name will be displayed when the key is functioning
correctly.
7. Press and hold the ENTER key to exit the key test.
Factory Set
8. Factory set clears user parameters and returns all programs to the factory default settings.
9. If do you do not wish to restore the factory settings use the S,Tkeys to move to the display
test or key test.
10. If you wish to restore the factory settings, press the ENTER key. Cleared will be
momentarily displayed.
Display Test
11. Press the ENTER key to enter the display test.
12. The display will sequentially illuminate all of the L.E.D.’s on the display. The test will run
continuously until you exit the test.
13. Press the RESET key to exit the display test.
14. Press the RESET key to exit the service mode program.

Procedure 2.2 - Accessing the Odometer & Software Versions
Procedure
1. Plug the power cord into the wall outlet, then turn on the EFX with the on/off switch.
2. While pressing and holding the ENTER key, press the RESET. INCLINE Sand
RESISTANCE Tkeys, sequentially.
3. The upper display screen will scroll the upper and lower software versions.
4. The lower display screen will scroll the total number of strides and the total number of
operation hours.
5. Press the RESET key to exit the odometer and software versions display.

Procedure 2.3 - Accessing the Unit Change Mode
Selecting United States standard units causes information to be displayed in miles. Information is
displayed in kilometers if metric units are selected. After you select a measurement standard, the
software accumulates and records workout information in the units of the measurement standard
selected.
Procedure
1. Plug the power cord into the wall outlet, then turn on the EFX with the on/off switch.
2. While pressing and holding the ENTER key, press the RESET, INCLINE Tand
RESISTANCE Skeys, sequentially.
3. UNIT CHANGE will be displayed.
4. Press a S,Tkey to view the currently selected unit of measure.
5. Press a S,Tkey to toggle between U.S Standard and Metric units.
6. Press the RESET key to exits without saving the currently selected unit of measure or the
ENTER key to save the currently selected unit of measure.
7. Press the RESET key to exit the unit change mode.

Procedure 2.4 - Accessing the Production Check Mode
The production check mode moves the incline to level 8. Level 8 is the position the incline must
be in to be calibrated. See Procedure 5.3 for incline calibration details. The production mode also
provides a means of testing all of the display keys. This mode is used on the Precor production
line to set the incline calibration and to ensure that all of the display keys are functioning.
1. Plug the power cord into the wall outlet, then turn on the EFX with the on/off switch.
2. While pressing and holding the ENTER key, press the INCLINE T, RESET and
RESISTANCE Tkeys, sequentially.
3. LIFT CALBRATION - LIFT MOVING TO LEVEL 8 will scroll across the lower display and
the incline will move to level 8, if it is not currently at level 8. Note: if the incline was already
at level 8, the program will proceed directly to the production check mode. The incline is now
in the correct position to be calibrated. If incline calibration is required, see Procedure 5.3.
Incline calibration is typically only required after the incline motor has been replaced.
4. Once the incline has reachedlevel 8, PRODUCTION CHECK MODE - PRESS ENTER KEY
TO CHECK ALL KEYS will scroll across the lower display.
5. To exit the production check mode without checking the display keys, press the RESET key
or press the ENTER key to proceed with the key test.
6. After you have entered the key test, it is necessary to press every key on the display before
you can exit the procedure. This ensures that all of the keys are functioning. If all of the keys
are functioning correctly, PASS will scroll across the upper display.
7. If the key test is failed, FAILED will scroll across the upper display and you will be unable to
exit the production check mode. Set the on/off switch in the off position. See Procedure 7.2
for display front panel replacement.
8. If the key test is passed, press and hold the ENTER key to exit the production check mode.

Procedure 2.5 - Accessing the Error Log
1. Plug the power cord into the wall outlet, then turn on the EFX with the on/off switch.
2. Press and hold the RESET key for four seconds.
3. ERROR LOG will scroll across the upper display.
4. If no errors are present in the error log, NO ERROR will scroll across the lower display.
5. If errors are present they will scroll across the lower display in the form 1 - ERROR XX AT
XXX STRIDES XX HOURS.
6. Use the S,Tkeys to scroll through the errors in the error log.
7. If you wish to clear the error log, press and hold the QUICK START key until CLEARED is
displayed.
8. To exit the error log without clearing the log press the RESET key.