Entering Diagnostic Mode Procedures
Troubleshooting
41
6.2.
Entering Diagnostic Mode Procedures
This section provides the procedures for launching Diagnostic Mode in each 90 Series treadmill model. Diagnostic
Mode contains information to trouble shoot different components/functions and can be used for Elevation
calibration, hours of use, etc.
6.2.1. Touch Screen Executive Control (ET4) Diagnostic Mode
To enter diagnostic mode:
1. With board off press and hold
Down
and
Stop
and then press
Start
.
2. Count to two and release all keys. This will bring you to Menu list that allows you to enter the following diagnos
-
tic functions. To navigate the list:
SPEED SENSOR displayed
The speed sensor reads the RPM from the flywheel and relays this infor
-
mation to the upper board. The speed sensor must be positioned perpen
-
dicularly at a gap of 1/16” from the flywheel. The SPD LED will flicker on
and off when it detects the gaps in the flywheel “teeth”. This is most easily
demonstrated when the treadmill is not running and the flywheel is spun
slowly by hand.
Recalibrate: see “Speed Calibration: PWM PCB Motor Control Treadmills”
on page
If problem recurs, test according to “Testing Speed Sensor” on page
49.
MOTOR VOLTAGE displayed
This tests the DC voltage from the motor control board to the drive motor.
During testing the drive motor will move. If this test fails, measure for 90 -
180VDC voltage output across M+ and M- while in diagnostic mode. If fail,
replace the motor control PCB. Test at maximum speed:
•110V: 90VDC
•220V: 180VDC
INCLINE SENSOR displayed
This confirms feedback from the potentiometer. A working potentiometer is
0 to 1000
Ω
.
ELEVATION MOTOR displayed
This will test elevation motor movement.
Grade Potentiometer displayed
This test works in relation with the INCLINE SENSOR test. Test will check if
the potentiometer reading is calibrated and compare that feedback are
within parameters.
Upper display fails to light when
START
is pressed.
See “ESI SCR: Upper display fails to light when START is pressed.” on
page
Display reads Calibration in Prog
-
ress.
See “PT4: Calibration in Progress Message at Start Up” on page
Display reads “OFF”.
See “PT4 Displays Elevation Error Code: OFF” on page
PO error: Elevation system failure See “ESI PWM: PO Error: Elevation System Failure” on page
“Potentiometer Out Of Range”;
Elevation Malfunction
Same as PO error: Elevation system failure. See “ESI PWM: PO Error: Ele
vation System Failure” on page
Note:
A signal break may also cause an O5, PO, or L5 error.
Table
6-2
Diagnostics (Continued)
Symptom
Probable Cause/Diagnostic Procedure
Содержание L7 Club
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Страница 16: ...Introduction Recommended Tools 16...
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Страница 30: ...Routine Maintenance Maintenance Checklist 30...
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