Main cooling fan
Controller board
LVPS card
assembly
Duplex
cooling
fan
Print cartridge
cooling fan
HVPS card
assembly
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.
Fuser cooling fan (hot roll printer only)
The fuser cooling fan discharges air from the fuser area to provide cooling to this area of the printer.
4063
Appendix C: Theory of operation
899
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