Precor 9.31 Bedienungsanleitung

9.31, 9.33, 9.35 Treadmill

Page 1

9.31, 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.

Unauthorized Reproduction and Distribution Prohibited By Law

9.31, 9.33, 9.35 Treadmill

Page 2

Section One - Things you Should Know

About This Appendix

Section One, Things You Should Know. This section includes technical specifications. Read

this section, as well as the 9.31, 9.33 or 9.35 Treadmill Owner’s Manual, before you perform the

maintenance procedures in this manual.

Section Two, Software Features. Precor 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 9.31, 9.33 and 9.35 Treadmill.

General Information

For the latest exploded view diagram, part number and part pricing information, visit the Precor

dealer website at “www.precor.com/Dealer”.

9.31, 9.33, 9.35 Treadmill

Page 3

Technical Specifications

Physical Specifications

Length: 79 inches (201 cm.)

Width: 33.5 inches (85 cm.)

Height: 55 inches (140 cm.)

Running surface: 20 inches by 57 inches (51 cm. by 145 cm.)

Motor: 2.75 (9.31, 9.33), 3.0 (9.35)hp. continuous duty

Speed: 0.5 to 11 mph (0.8 to 18 kph)

10 mph is equivalent to a 6 minute mile

Incline: 0% to +15% grade

Power: 120 Vac 50/60 Hz @ 20 amp

Weight: 280 lbs (127 kg.)

9.31, 9.33, 9.35 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

• Lift Test

• Belt Speed Test

• Belt Power Test

Procedure

1. Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker.

2. Press keys RESET,5,1,7,6,5,7,6,1, sequentially.

3. If you are testing a 9.33 or 9.35 treadmill continue with step 4. If you are testing a 9.31

treadmill skip to step 31.

4. The keys on the display are hypothetically numbered 1 to 7 from left to right. See Diagram

2.1. The STOP is key number 4 and is located directly below the QUICK START key. The

QUICK START key is not part of the numbering sequence.

5. The display will momentarily read DIAGS - HARDWARE VALIDATION.

6. The display will momentarily read DISPLAY TEST and then illuminate every LED on the

display. Check all LED positions to ensure that all of the LED’s are functioning. Press the

ENTER key to continue.

Diagram 2.1 - 9.33 & 9.35 Displays

9.31, 9.33, 9.35 Treadmill

Page 5

7. The display will momentarily read KEYBOARD TEST.

8. The keyboard test will place two dots on the display for each key on the display, including

the numeric keypad. Pressing a key will cause the upper of the two dots 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.

9. Press and hold the ENTER key to proceed to the heart rate test.

10. The display will momentarily read HEART RATE TEST.

11. The heart rate test will display the heart rate being received during this test from either a

chest strap transmitter or test transmitter.

12. Three heart rate values will be displayed. They will be prefixed “U” for unfiltered, “F” for

filtered and “P” for Polar filtering. The Polar filtered heart rate will also appear in the normal

heart rate display, since Polar filtering is the filtering used during normal operation. The right

most red LED in the smart rate display will flash each time a heart beat is detected.

Note: If there is not a heart rate receiver installed or there is a bad or intermittent connection

between the heart rate receiver and the upper PCA, the messages in step 9 will be

replaced by the message NO HEART RATE RECEIVER.

13. Press the ENTER key to proceed to the lift test.

14. The display will momentarily read LIFT TEST.

15. Two numbers will be displayed, the percent of lift and A/D number related to the current lift

position. The A/D (analog to digital) number represents the lift potentiometer reading. The

A/D number will be in the range of 0 to 255.

16. The lift may be operated using the INCLINE keys. The incline percentage and A/D numbers

will change accordingly.

17. The A/D reading will be used later in this service manual to calibrate the lift.

18. Press the ENTER key to proceed to the belt speed test.

19. The display will momentarily read BELT SPEED TEST.

20. The speed of the running belt is controlled by the SPEED keys during this test.

21. The following values are displayed; time (that the running belt has operated during this test),

current (in amps through the drive motor), belt speed (in MPH) and power bits (PWM value).

22. This test is valuable in diagnosing treadmill load conditions such as running bed and/or

running belt condition. As load is increased, the speed is kept at a constant value (as set via

the SPEED keys) and the current and power bits will vary proportionately to the load.

9.31, 9.33, 9.35 Treadmill

Page 6

23. It is suggested that you perform this test on a treadmill known to be in excellent operating

condition. Note the values displayed at a fixed speed (such as 3 MPH) and your body

weight. Those values may then be used to benchmark the operation of treadmills you are

diagnosing.

24. Press press the ENTER key to proceed to the belt power test.

25. The display will momentarily read BELT POWER TEST.

26. The belt power test is similar to the belt speed test except that the SPEED keys control the

power bits (PWM value) instead of the belt speed.

27. The same (see step 16) values will be displayed as in the belt speed test.

28. This test is valuable in diagnosing treadmill response to load conditions. As load is

increased, the power bits are kept at a constant value (as set via the SPEED keys) and the

current and belt speed will vary proportionately to the load.

29. It is suggested that you perform this test on a treadmill known to be in excellent operating

condition. Note the values displayed at a fixed power bit reading (as set by the SPEED

keys) and your body weight. Those values may then be used to benchmark the operation of

treadmills you are diagnosing.

30. The belt power test is the last test in the diagnostics routine. Press the RESET or the

ENTER key to exit the diagnostics routine.

Diagram 2.2 - 9.31 Display

31. The keys on the display are hypothetically numbered 1 to 7 from left to right. See Diagram

2.2. QUICK START is key number 4.

32. The display will momentarily read DISPLAY TEST.

9.31, 9.33, 9.35 Treadmill

Page 7

33. All of the LED’s on the display will illuminate. If any LED on the display is not illuminated,

replace the upper PCA.

34. Press the SELECT or the RESET key to continue to the keyboard test.

35. The display will momentarily read KEYBOARD TEST.

36. An indicator will be displayed for each key on the keyboard. When a key is pressed the

indicator will change. Press every key on the keyboard to ensure that all keys are

functioning normally.

37. Press and hold the RESET or SELECT key to continue to the heart rate test.

38. If the 9.31 is not equipped with the heart rate option, the message NO HR RECEIVER will

be displayed indicating that a heart rate receiver was not detected.

39. Create a heart rate signal using either a heart rate chest strap or test transmitter. The heart

rate LED will flash and the heart rate reading will be displayed. The SELECT key will allow

you to toggle between P- Polar filtering, U- unfiltered and F- filtered.

40. Press the RESET key to continue to the lift test.

41. The display will momentarily read LIFT TEST then A/D.

42. The lift A/D (analog to digital) number will be displayed. The lift A/D number is related to the

current lift position and represents the lift potentiometer reading. The A/D number will be in

the range of 0 to 255.

43. The lift may be operated using the INCLINE keys. The lift A/D number will change

accordingly.

44. The A/D reading will be used later in this service manual to calibrate the lift.

45. Press the RESET key to proceed to the belt speed test. Press SELECT to display the

percent of incline.

46. The display will momentarily read BELT SPEED TEST then MPH. The display then show

the actual operating speed.

47. The speed of the running belt is controlled by the SPEED keys during this test as it would be

in a normal operating mode.

48. The SELECT key will toggle between a MPH, POWERBITS and TIME display. TIME

indicates the test’s elapsed time.

49. This test is valuable in diagnosing treadmill load conditions such as running bed and/or

running belt condition. As load is increased, the speed is kept at a constant value (as set via

the SPEED keys) and the current and power bits will vary proportionately to the load.

9.31, 9.33, 9.35 Treadmill

Page 8

50. It is suggested that you perform this test on a treadmill known to be in excellent operating

condition. Note the values displayed at a fixed speed (such as 3 MPH) and your body

weight. Those values may then be used to benchmark the operation of treadmills you are

diagnosing.

51. Press press the RESET key to proceed to the belt power test.

52. The display will momentarily read BELT POWER TEST then POWERBITS. The display will

then read the current powerbit value.

53. In this test SPEED keys control the power bit setting instate of the actual speed.

54. The SELECT key will toggle between a MPH, POWERBITS and TIME display. TIME

indicates the test’s elapsed time.This test is valuable in diagnosing treadmill response to

load conditions. As load is increased, the power bits are kept at a constant value (as set via

the SPEED keys) and the current and belt speed will vary proportionately to the load.

55. It is suggested that you perform this test on a treadmill known to be in excellent operating

condition. Note the values displayed at a fixed power bit reading (as set by the SPEED

keys) and your body weight. Those values may then be used to benchmark the operation of

treadmills you are diagnosing.

56. The belt power test is the last test in the diagnostics routine. Press the RESET key to exit

the diagnostics routine.

9.31, 9.33, 9.35 Treadmill

Page 9

Procedure 2.2 - Accessing the Information Display Program

The information display will access the following data;

• Odometer

• Hour meter

• Software version

• Error log

Procedure

1. Plug the power cord into the wall outlet, then turn on the treadmill with the circuit breaker.

2. Press the keys RESET,6,5, sequentially.

3. If you are testing a 9.33 or 9.35 treadmill continue with step 4. If you are testing a 9.31

treadmill skip to step 19.

4. The display will momentarily read, DIAGS - INFORMATION DISPLAY.

5. The display will momentarily read, ODOMETER.

6. The treadmill’s odometer will be displayed as 1234567 MPH or 1234567 KPH.

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.

7. Press the ENTER key to proceed to the hour meter display.'

8. The display will momentarily read, HOUR METER.

9. 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.

10. Press the ENTER key to proceed to the software version display.

11. The display will momentarily read, SOFTWARE VERSION.

12. The software versions of the upper and lower PCA’s will be displayed as;

UPPER 1.01 LOWER 1.01.

13. Press the ENTER key to proceed to the error log.

9.31, 9.33, 9.35 Treadmill

Page 10

14. 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 errorcondition 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.

15. Each error in the log will show the odometer reading (in miles) and the time (hour meter)

when the error occurred. The errors are displayed as;

1 ER20 1234567 MI 12345 HRS.

16. The arrows keys will allow you to scroll through the log. When the first unused position is

reached in the log, the message NO MORE ERRORS will be displayed.

17. 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

message CLEARED will be displayed. When the QUICK START key is released the

message NO MORE ERRORS will be displayed and all error are erased from the log.

18. Press the RESET the ENTER key to exit the information display.

19. The display will scroll either MILES: 1234567 or KILOMETERS 1234567. The reading will

indicate the total distance that has been recorded on the treadmill.

20. Press the SELECT or RESET key to continue to the hours display.

21. The display will read HOURS: 1234. The reading will indicate the total number of hours of

use.

22. Press the SELECT or RESET key to continue to the software version display.

23. The display will continuously toggle between UPPER SW VER X.XX. and LOWER SW VER

X.XX.

24. Press the SELECT or RESET key to continue to the error log display.

25. The first error log entry will scroll 1:ERR XX at 123456 MILES 12435 HOURS. If there are

no errors in the log, the message NO ERRORS will be scrolled.

26. The ▲key will move through the log to older errors (if any). If there are no more errors, the

message NO MORE ERRORS will be scrolled.

27. Pressing and holding the QUICK START key for 2 seconds will cause the prompt CLEAR?

to be displayed, holding the QUICK START for an additional 2 seconds will clear all existing

entries from the error log. The display will confirm that the error log has been cleared by

displaying OK. The display will revert to the first log entry and show it as a null entry (1: ---).

If the QUICK START key is not held for a minimum of 4 seconds, the error log will not be

cleared.

28. Press the RESET or SELECT key to exit the information display program.

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