General Descriptions Of Each Section; Paper Feed Section - Sharp SF-2014 Service Manual

[5] GENERAL DESCRIPTIONS OF
EACH SECTION
The general descriptions of the following sections are given:

1 Paper feed section

2 Separation, transport section
3 Fuser, paper exit section
4 Developer section
5 Optical system
6 Image forming section
7 SPF section (SF-2214 only)
Internal structure
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3
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1. Paper feed section
The paper feed system is in two ways: the cassette feed and the
manual feed. The cassette is of the universal type and has the capac-
ity of 250 sheets. It is attached and detached at the front cabinet, that
is, the front loading system.
The manual paper feed is single. (The multi paper feed unit (SF-
MF14) is an option.)
In addition to the standard cassette (250 sheets), the optional cas-
sette module (SF-CM14, 250 sheets) can be added.
(Cassette paper feed operation)
The cassette paper feed clutch (CPFC) turns on, the paper feed roller
shaft, the paper feed roller, and the takeup roller rotate. At the same
time, the roller release arm is lowered by the limiter spring. As a
result, the takeup roller falls by its own weight to reach the paper
surface, performing the paper feed operation.
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When the CPCF turns off, rotation is stopped, and the takeup roller is
pushed up by the roller release arm spring to the position.
(Manual paper feed operation) Multi
When the solenoid B (MPFS) turns on, the takeup roller falls and the
gate rises.
Almost simultaneously the solenoid A (MPFC) turns on and the
takeup roller and the paper feed roller turns to perform the paper feed
operation.
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When the PPD turns on, the MPFS turns off and the RRC turns on.
Almost simultaneously the MPFC turns off to return the roller and the
gate to the initial state.
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ON
OFF