Electrical Components And Controller; Sensor (Control Panel Door Interlock); Sensor (Rear Door Interlock); Main Cooling Fan - Lexmark MX81 Series Service Manual

Electrical components and controller

Controller board

Sensor (control panel door interlock)

The sensor is a safety device to cut off a 24 VDC power supply from the LVPS to the high volt power supply (HVPS),
controller board, and to the main drive motor assembly, while the control panel door is open.

Sensor (rear door interlock)

The sensor is a safety device to cut off a 24 VDC power supply from the LVPS to the HVPS, controller board, and to the
main drive motor assembly, while the printer rear door is open.

Main cooling fan

The main cooling fan discharges air from the printer to provide cooling to this area of the printer.

Cartridge cooling fan

The imaging unit cooling fan discharges air from the print cartridge area to provide cooling to this area of the printer.

Duplex cooling fan

The Duplex cooling fan discharges air from the duplex drive motor area to provide cooling to this area of the printer.
Main cooling fan
HVPS card
assembly
Appendix C: Theory of operation
780
LVPS card
assembly
Duplex
cooling
fan
Print cartridge
cooling fan
7463