Diagnostic information 2-19
2580+, 2581+, 2590+, 2591+
3 beeps and Tractor 2 LED blinks 3 times
Tractor 2 is selected from the operator panel, but the printer does not detect Tractor 2 or detects that the Tractor
2 mechanism is not installed.
Step FRU Action
1Tractor 2
Home sensor
Remove the Tractor 2, and turn the printer off and then back on again to
determine if the fault is in the printer or Tractor 2.
If the gear teeth chatter just before the beeps, replace the Home sensor.
2 Logic board Remove Tractor 2 from the printer, but leave the cable connected. Be
sure the slider (the black plastic piece just above the right cover) moves
after turning the printer off and then back on.
If the slider does not move after turning the printer off and then back on:
• Be sure the slider and gear train are properly connected and move
freely with the power off.
• Be sure the Tractor 2 board is receiving:
+40 V dc on CN1-1 and +5 V dc on CN1-5.
If the slider does move, check the cable connection and the voltages at
logic board J10-1. The upper right pin at J10 is pin 1 (+40 V dc) and the
pin just beneath it is pin 5 (+5 V dc).
If these voltages are not present, replace the logic board.
3 Tractor 2 motor board/
cable assembly
Check the resistances of the Tractor 2 motor windings at CN5 on the
Tractor 2 board. There should be 101 ± 5 ohms between pins:
• CN5 -1 and CN5 - 4
• CN5 -1 and CN5 - 6
• CN5 -2 and CN5 - 3
• CN5 -2 and CN5 - 5
If the motor is good, replace the board/cable assembly.
Step FRU Action
1 Tractor 2 Home sensor Remove the Tractor 2, and turn the printer off and then back on again to
determine if the fault is in the printer or Tractor 2.
If the gear teeth chatter just before the beeps, replace the Home sensor.
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