Sensors
Electrical components and controller
• “Sensor (control panel door interlock)” on page 899
• “Sensor (rear door interlock)” on page 899
• “Main cooling fan” on page 899
• “Cartridge cooling fan” on page 899
• “Duplex cooling fan” on page 899
• “Fuser cooling fan (hot roll printer only)” on page 899
• “LVPS board assembly” on page 900
• “HVPS board assembly” on page 900
• “Controller board” on page 900
4063
Appendix C: Theory of operation
898