Control Of Paper Size - Konica Minolta pagepro 5650EN Service Manual

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Service manual (304 pages)

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Table of Contents

9. Media feed section (Tray 1 / Tray 2)

B. Size Switch

• A switch for setting the size of paper supplied from each Paper Cassette is mounted. A

signal indicating the set size is transmitted as a voltage to the PRCB.

C. Actuator for empty sensor

• If paper runs out in the Paper Cassette, the actuator for empty sensor drops and the flag

of the actuator for empty sensor that shielded the detection portion of the empty sensor

moves off the detection portion. Thus, the light is transmitted.

D. Media empty sensor

• The presence or absence of paper in the Paper Cassette is detected by the position of

the actuator for empty sensor. This is converted into an electrical signal. If the detection

portion is shielded (i.e., there is paper), TRAY1 MEDIA SNR ON or PS3 ON signal is

turned OFF.

E. Registration sensor

• The paper transported from the Paper Cassette pushes up the actuator b. The flag of the

actuator a optically unshields the detection portion of the registration sensor. Thus, the

passage of paper is detected.

F. Registration roller clutch

• This electromagnetic clutch turns ON and OFF the driving force to the Registration roller

and Registration roller (driven), to place the paper in position.

G. Actuator for near empty sensor

• When paper is low in the Paper Cassette installed in the Tray2, the arm of the actuator for

near empty sensor is pushed up by the media pressure plate. The flag of the actuator for

near empty sensor that shielded the detection portion of the near empty sensor moves

off the detection portion. Thus, the light is transmitted.

H. Near empty sensor

• When paper is low in the Tray2 Paper Cassette, this is detected by the position of the

actuator for near empty sensor and converted into an electrical signal. When the detec-

tion portion is shielded (i.e. paper is high), PS4 ON signal is turned OFF.

9.3.3