C7085-90921 Chapter 5 Theory of operation 129
Reversing operation
The media is guided to the duplex unit with the face-up deflector in conjunction with the face-up tray.
If the face-up tray is closed, the delivery deflector solenoid (SL3102) operates the deflector. The
duplex driver PCB turns the delivery deflector solenoid (SL3102). The rotation of the delivery
deflector solenoid moves the delivery deflector, feeding the media into the duplexer. The reversing
motor (M3102) rotates counter clockwise to feed the media into the reversing unit.
Once the reversed paper sensor (PS3101) detects the trailing edge of the paper fed into the reversed
unit, the duplex driver PCB changes the paper feed direction by rotating the reversing motor
clockwise. Paper is then fed along the lower duplex guide until the paper reaches the duplex feed
unit.
Figure 5-33 Reversing operation
Table 5-7 Motors, solenoids, and sensors
Reference Description
M3101 Duplex feed motor
M3102 Reversing motor
M3103 Side registration motor
SL3101 Duplex feed roller pressure release solenoid
SL3102 Delivery deflector solenoid
PS3101 Reversing unit paper sensor
PS3102 Face-up sensor
PS3103 Reversing unit stationary paper sensor
PS3104 Duplex pick-up paper sensor
PS3105 Side registration home position sensor
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