GE T2100 Service Manual page 88

LED Status
DS1
DS2
DS3
DS4
DS5
DS6
6-16
Troubleshooting: TDU Troubleshooting Tables and Status LEDs
Name
Elevation / Calibration This LED toggles on or off every 500ms if an elevation error has occurred.
When the elevation error is cleared, the LED is off. During calibration this
LED will turn on, and when a limit switch is reached the LED will flash
rapidly for 100ms.
Drive / Burn-In This LED toggles on or off every 500ms if a drive error has occurred.
When the drive error is cleared, the LED is off. Also, the LED will turn on
when burn-in is activated. During the burn-in cycle, the LED will flash
rapidly for 100ms every time the belt speed increases.
Temperature This LED toggles on or off every 500ms if a temperature warning occurs.
The LED turns on and stays on if a temperature error occurs. The LED will
be off when the internal temperature is within the normal operating limits.
Communication This LED toggles on or off every 200ms while the microcontroller is
receiving commands over the serial cable. If a command is not received
after 500ms, the LED turns off. If a communication timeout occurs (no
communication after 4 seconds anytime the belt is enabled), the LED
turns on and stays on until a command is received.
Emergency Stop This LED toggles on and off every 500ms while the system is monitoring
the emergency stop line. When the emergency stop button is pressed or
the ESTOP command is received, the LED turns on and stays on until 20
seconds after the emergency stop button is released.
Heartbeat This LED toggles on or off every second when power is applied to the e-
box. If power is applied and there is no heartbeat:
1. Verify the ESTOP switch is correctly installed
2. Check the fuses
3. Check the power test points for +24v and +5v
If all the items above are working correctly, the problem is not in the e-box.
GE T2100 Treadmill
2021403-031
Description
Revision A