Duplexing Unit; Outline - Canon LBP-1760 Service Manual

CHAPTER 2
IX. DUPLEXING UNIT
A. Outline
The operation sequences of the duplexing unit are controlled by the duplexing unit driver. A 4-
bit microprocessor is used in the duplexing unit driver, which controls the sequences of the
duplexing unit and the serial communication with the engine controller of the printer.
The duplexing unit driver drives the solenoid, motors, and fan according to the duplexing unit
command and the duplexing unit pick-up command sent from the engine controller.
duplexing unit also sends back the status of the duplexing unit to the engine controller.
The printer supplies +24VDC to the duplexing unit. The duplexing unit driver generates +5V
for the ICs based on this +24V.
The flow of input/output signals to/from the duplexing unit driver PCB is as shown figure 2-
8-1.
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The