TallyGenicom 9045N, Service Manual

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Chapter 6 Principles of Operation
16. Actions of Main Functional Components
The Option 550 Feeder is available as an optional feeder for JIGEN laser printer. The
Paper Cassette installed in the optical feeder is identical in function with the standard
Paper Cassette used by the base engine, and so the description of the Paper Cassette
is omitted here.
OPT ASSY SIZE
A switch for setting the size of paper supplied from Paper Cassette is mounted. A
signal indicating the set size is transmitted as a voltage to the MCU side of HVPS/
MCU.
ACTUATOR NO PAPER
If paper runs out in the Paper Cassette, the ACTUATOR NO PAPER drops and the
flag of the ACTUATOR NO PAPER that shielded the detection portion of the
SENSOR NO PAPEER moves off the detection portion. Thus, the light is
transmitted.
SENSOR NO PAPER
The presence or absence of paper in the Paper Cassette is detected by the position
of the ACTUATOR NO PAPER. This is converted into an electrical signal. If the
detection portion is shielded (i.e., there is paper), /NO PAPER FEED 550 SNR ON
signal is turned OFF.
ACTUATOR LOW PAPER
When paper is low in the Paper Cassette, the arm of the ACTUATOR LOW PAPER
is pushed up by the PLATE ASSY BTM. The flag of the ACTUATOR LOW PAPER
that shielded the detection portion of the SENSOR LOW PAPER moves off the
detection portion. Thus, the light is transmitted.
SENSOR LOW PAPER
The state that paper is low in the Paper Cassette is detected by the position of the
ACTUATOR LOW PAPER. This is converted into an electrical signal. If the
detection portion is shielded (i.e., paper is high), /LOW PAPER FEED 550 SNR ON
signal is turned OFF.
550 FEEDER OPTION
This is a mechanism for supplying paper from the Paper Cassette into the printer.
The driving force from the MOTOR FEEDER is transmitted via the CLUTCH ASSY
PH to the ROLL ASSY FEED and ROLL ASSY NUDGER. Thus, the paper is
transported. When the ROLL ASSY NUDGER picks up some sheets of paper and
the paper gets low, the position of the ROLL ASSY NUDGER drops accordingly.
The lowered ROLL ASSY NUDGER pushes down the lock lever of the PLATE
ASSY BTM, releasing it. The PLATE ASSY BTM is pushed up by a spring, and thus
the paper is raised. The raised paper then raises the SUPPORT NUDGER. The
SUPPORT NUDGER disengages from the lock lever of the PLATE ASSY BTM.
The PLATE ASSY BTM stops moving upward.
ROLL ASSY TURN
This roll conveys the paper into the printer after the paper is transported by the
ROLL ASSY FEED and ROLL ASSY NUDGER. The driving power from the