Actions Of Main Functional Components; Overview; Duplex Cover Switch; Transport Sensor - Konica Minolta bizhub 40P Service Manual

4. Operation
4.2

Actions of Main Functional Components

4.2.1

Overview

• The Option Duplex is available as an optional unit for bizhub 40P laser printer. Duplex
printing is enabled by mounting this optional unit to the rear side of the base engine.
4.2.2

Duplex cover switch

• This switch detects that the duplex cover and rear cover are closed.
4.2.3

Transport sensor

• This sensor detects the presence or absence of paper in the duplex.
4.2.4

Cooling fan motor

• This fan vents air within the duplex and takes in outside air, to prevent abnormal temper-
ature rise in the duplex.
4.2.5

Transport roller

• This roll feeds the paper having the printed first surface back into the printer through the
duplex, to print on the second surface.
4.2.6

AD control board

• A CPU is installed in the AD control board. This CPU receives instructions from PRCB
and from sensors and switches, and controls feeding operation in the AD control board.
• A flash ROM is used with the CPU installed in the AD control board, so that the firmware
can be rewritten through communications.
4.2.7

Transport motor

• This motor gives the driving force the three Transport rollers, which transport the paper
into the printer.
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Theory of operation Ver. 1.0 Dec. 2007