Actions Of Main Functional Components; Overview; Duplex Cover Switch; Transport Sensor - Konica Minolta pagepro 5650EN 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 pagepro 4650EN/5650EN 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.
6
Theory of operation Ver. 1.0 Nov. 2007