Note: The interlock bypass jumpers are only used with the following motors:
- Motor (fuser)
- Motor (K developer)
- Motor (transfer module)
- Motor (duplex/MPF)
The controller board has two door interlock bypass jumpers. These jumpers allow you to remove the motor cover and open the toner door to see the motors in operation while being tested in diagnostics mode. The JMTREN1 jumper connector allows you to bypass the interlock switches, and test the motor (fuser) and motor (K developer/transfer module). The JMTREN2 jumper connector allows you to bypass the interlock switches, and test the motor (duplex/MPF).
Note: If the jumpers are not set to the bypass position, and a motor test is performed while the toner door is open, then a 1yy.80 error occurs.
The following are the jumper configurations:
To set the jumpers:
Turn off the printer.
Remove the controller board shield. See Controller board shield removal.
Remove the inner controller board shield. See Inner controller board shield removal.
Locate the jumper connectors on the controller board.
Move the jumper of the motor being tested to the bypass position.
Press and hold the 3 and 6 buttons while turning on the printer to enter the Diagnostics menu.
Touch Printer diagnostics & adjustments > Motor tests.
Select a motor, and then touch Start.
After the test, turn off the printer, and then move the jumpers back to the default position.
Note: If the jumpers are not moved to the default position, then a false door open message appears on the screen.