Precor 9.33 User manual

9.33, 9.35 240V Treadmill
Page 1
9.33, 9.35 Treadmill
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
20081-119

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Section One - Things you Should Know
The 9.33, 9.35 incorporate new drive motor system and display systems. The drive motor is a
three phase AC motor. The drive motor controller converts a single phase AC input into three
phase motor control.
Section One, Things You Should Know. This section includes technical specifications. Read
this section, as well as the 9.33, 9.35 Treadmill Owners Manual, before you perform the
maintenance procedures in this manual.
Section Two, Software Features. Precor’s 9.33, 9.35 Treadmills are programmed with several
diagnostic and setup features. This section contains the procedures you need to access the
diagnostic features on this treadmill.
Section Three, Checking Treadmill Operation. This section provides you with a quick way of
checking treadmill operation. Check treadmill operation at the end of a maintenance procedure
and when it is necessary to ensure that the treadmill is operating properly.
Section Four, Inspection and Adjustment Procedures. Perform inspection procedures when
a trouble symptom points to a particular problem and after removing and replacing major
components. Many maintenance problems can be fixed by adjusting various treadmill
components. This section also provides you with the step-by-step procedures required to make
these adjustments.
Section Five, Troubleshooting Procedures. The diagnostic and troubleshooting procedures
contained in this section should be performed when it is necessary to isolate a problem to a
particular component.
Section Six, Replacement Procedures. When a treadmill component must be replaced, go to
this section and follow the step-by-step procedures required to remove and replace the
component.
Section Seven, Technical Diagrams and Parts Lists. This section includes wiring diagrams,
and block diagrams for the 9.33, 9.35 Treadmills.

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Safety guidelines you should know and follow include:
• Read the owner’s manual and follow all operating instructions.
• Operate the treadmill on a solid, level surface.Visually check the treadmill 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 treadmill.
• When operating the treadmill, 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 treadmill, 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.
• Removing the hood exposes high voltage components and potentially dangerous
machinery. Exercise extreme caution when you perform maintenance procedures with the
hood removed.

9.33, 9.35 240V Treadmill
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General Information
For the latest exploded view diagram, part number and part pricing information, visit the Precor
dealer website at “www.precor.com/connection.

9.33, 9.35 240V Treadmill
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Procedure 2.1 - Accessing the Hardware Validation Program
The treadmill's diagnostic program consists of the following modes:
• Display Test
• Keyboard Test
• Heart Rate Test
• Machine Test
Procedure
1. Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker.
2. Refer to diagram 2.1 below and press keys RESET,5,1,7,6,5,7,6,1, sequentially. Use the
numeric keypad to enter the number sequence. The ARROW keys will step you through the
test modes listed above, allowing you to skip tests or perform only specific tests.
3. DISPLAY TEST.
4. Press the OK key to enter the display test. Press the OK or ENTER key several times to
step through all of the LED’s on the display. Ensure that all of the LED’s illuminate. Press
and hold the OK or ENTER key to exit the display test.
Diagram 2.1 - 9.33 Display
Numeric
Keypad
OK key
Arrow Keys
RESET key

9.33, 9.35 240V Treadmill
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5. KEYBOARD TEST.
6. The keyboard test will place a dot on the display for each key on the display, including the
numeric keypad. Pressing a key will cause the dot associated with the key to go out. Test all
of the keys in this manner. Tug on the safety key lanyard, to ensure that the STOP key is
activated.
7. Press and hold the OK or ENTER key to exit the keyboard test.
8. HEART RATE TEST.
9. The heart rate test will display the heart rate being received during this test from the hand
held grips, chest strap transmitter or test transmitter.
10. The display will toggle between unfiltered and filtered heart rate readings. They will be
prefixed “U” for unfiltered, “F” for filtered. When a heart rate signal is being accepted the
“heart” will blink and the heart rate will be displayed in the heart rate window and the main
window. Test the heart rate in both the hand held and wireless (chest strap or test
transmitter) modes.
11. Press the OK or ENTER key to exit the heart rate test.
12. MACHINE TEST.
13. There are two test modes in the MACHINE TEST, they are BELT SPEED and INCLINE.
Use the ARROW keys to select the desired test.
14. BELT SPEED
15. Press the OK or ENTER key. POWERBITS will be momentarily displayed then the powerbit
number will be displayed. The power bit level can be checked by starting the running belt.
16. Press the OK key to exit the belt speed test.
17. INCLINE
18. Press the OK or ENTER key. A/D will be momentarily displayed then the analog to digital lift
position number will be displayed. The analog to digital lift position number represents the
incline’s physical position. The A/D number is used to calibrate the incline. The incline must
be calibrated when a new lift motor is installed.
Press the RESET to exit the MACHINE TEST.

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Procedure 2.2 - Accessing the Information Display Program
The information display will access the following data;
• Odometer
• U Boot SW
• U Base SW
• Lower SW
• Usage log
• Error log
Procedure
1. Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker.
2. Refer to diagram 2.1 above and press keys RESET,6,5 sequentially. Use the numeric
keypad to enter the number sequence. The ARROW keys will step you through the display
modes listed above, allowing you to skip displays or view only specific displays.
3. The display will momentarily read, DIAGS - INFORMATION DISPLAY.
4. ODOMETER
5. Press the OK or ENTER key. The treadmill’s odometer will be displayed as 1234567 MILES
or 1234567 KM.
Note: The odometer data is stored in non-volatile memory on the upper PCA. If the upper PCA
is replaced the odometer data will be lost.
6. Press the OK or ENTER key to exit the odometer display.
7. HOUR METER.
8. Press the OK or ENTER key. The operating time of the unit will be displayed as 12345
HOURS. The operating time is defined as total amount of time that the unit has operated in
program modes with the drive motor running. The hour meter is also used to provide the
“time stamp” for the error code log.
9. Press the OK or ENTER key to exit the hour meter display.
10. U BOOT SW
11. Press the OK or ENTER key. The U Boot SW part number will be displayed. The U Boot SW
is the software internally used to upload upper PCA operating system software (U Base
SW).
12. Press the OK or ENTER key to exit the U Boot SW display

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13. U BASE SW
14. Press the OK or ENTER key. The U Base SW part number will be displayed. The U Base
SW is the upper PCA operating system software.
15. Press the OK or ENTER key to exit the U Base SW display.
16. LOWER SW
17. Press the OK or ENTER key. The Lower SW part number will be displayed. The Lower SW
is the lower PCA operating system software.
18. Press the OK or ENTER key to exit the Lower SW display.
19. SERIAL NUMBER
20. Press the OK or ENTER key. The treadmill’s serial number will be displayed.
21. Press the OK or ENTER key to exit the serial number display.
22. USAGE LOG
23. Press the OK or ENTER key. The usage for each program can be displayed. The ARROW
keys will allow to scroll through the list of programs. For example the manual program usage
will be displayed as MANUAL USED X TIMES TOTAL X MINUTES.
24. Press the OK or ENTER key to exit the usage log display.
25. ERROR LOG
26. Press the OK or ENTER key.
27. The error log will store up to 10 error conditions. The errors are logged with the most recent
error in position one. When a new error condition occurs, each existing error is pushed down
one position in log. If there was an error in position 10 when a new error was logged, the
error that was in position 10 will be lost.
28. Each error in the log will show the odometer reading (in miles) and the time (hour meter) and
motorcurrentreadingwhentheerroroccurred.Theerrorsaredisplayedas;
1 ER20 XXXXX MI XXX HRS. XX.X AMPS
29. The ARROW keys will allow you to scroll through the log.
30. When the QUICK START key is held for 2 seconds the message HOLD TO CLEAR
ERRORS will be displayed. If the QUICK START key is held for an additional 2 seconds, the
log will be cleared. The message NO RRORS will be displayed and all error are erased from
the log.

9.33, 9.35 240V Treadmill
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Procedure 2.3 - Setting Club Parameters
This procedure allows you to change the following settings:
• Safety Code
• Select Units
• Set Max Pause Time
• Set Cool Down Time
• Set Speed Limit
Procedure
1. Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker.
2. Refer to diagram 2.1 above and press keys RESET,5,6,7,1 sequentially. Use the numeric
keypad to enter the number sequence. The ARROW keys will step you through the display
modes listed above, allowing you to skip displays or view only specific displays.
3. The display will momentarily display DIAGS - SET PARAMETERS
4. SAFETY CODE
5. Press the OK or ENTER key. When enabled the safety code will require the user to enter a
“password” before the trammel can be used.
6. Use the ARROW keys to select either ENABLED or DISABLED.
7. Press the OK or ENTER key to exit the safety code display
8. SELECT UNITS
9. The currently selected measurement unit will then be displayed.
10. Use the ARROW keys to toggle between U.S. and METRIC.
11. Press the ENTER key to select the currently displayed measurement unit.
12. SET MAX PAUSE TIME
13. Press the OK or ENTER key.
14. Use the ARROW keys to set the maximum pause time between 1 and 10 minutes.
15. Press the ENTER key to select the currently displayed pause time.
16. SET COOL DOWN TIME

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17. Press the OK or ENTER key.
18. Use the ARROW keys to set the COOL SOWN time between 1 and 5 minutes.
19. Press the ENTER key to select the currently cool down time.
20. SET SPEED LIMIT
21. Press the OK or ENTER key.
22. Use the ARROW keys to set the maximum speed between 1 and 12 MPH.
23. Press the ENTER key to select the currently displayed speed limit.
24. Press the RESET key to exit the set club parameters display.