Diagnostic aids 3-55
5022-xxx
24 V interlock switch
The 24 V dc interlock switch is mounted to the right side of the top cover camshaft assembly. Opening the top
door rotates the drive retraction lockout which opens the 24 V dc interlock switch. When the top door is closed
with the front access door also closed, the drive retraction lockout trips the switch arm which closes the 24 V dc
interlock switch.
When the 24 V switch opens, the normally open side of the switch is activated which signals the system card to
disable a +24 V power supply output, turning off all high voltage supplies, the bump/align motor, the duplex
motor and the fuser motor for safety considerations.
24 V interlock
switch
Switch armDrive retraction
lockout
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