Detailed Descriptions; Paper Feed - Sharp MX-LCX5 Service Manual

[4] DETAILED DESCRIPTIONS

MX-LCX5

1. Paper feed

A. Paper feed rollers
[D]
This LCT has three paper tray feed stations:
The 4th and 6th tray each hold 1,000 sheets of paper. The 5th tray
holds 2,000 sheets of paper. Total: 4,000 sheets.
Each tray contains four rollers:
[A] Pick-up roller
[B] Paper feed roller
[C] Separation roller
[D] Grip roller
NOTE: The pick-up roller, paper feed roller, and separation roller
are a standard FRR paper feed system.
B. Paper feed motors
[E]
[F]
Two stepper motors control the paper feed drive:
[A] Paper feed motor
[B] Grip motor
The paper feed motor drives the pick-up roller [C] and the paper
feed roller [D].
The grip motor drives the grip roller [E] that feeds the paper out of
the tray, and the separation roller [F].
[B]
[A]
[C]
[B]
[D]
[C]
MX-LCX5 DETAILED DESCRIPTIONS 4 – 1
C. Paper separation
Service Manual
[G]
When a paper feed station is not selected:
• Separation roller solenoid [A] is de-activated
[A]
• Separation roller [B] turns freely.
When the paper feed station is selected for a job:
• Paper feed motor [C] and grip motor [D] turn on.
When the feed motor [C] turns on, it drives the feed roller [E]. It also
drives the pick-up roller [F] because the pick-up roller is linked to
the feed roller by an idle gear.
When the separation solenoid [A] turns on, the separation roller [B]
contacts the paper feed roller [E] and turns with the feed roller,
unless more than one sheet of paper is fed. The three trays of the
LCT unit use the standard FRR mechanism.
When the paper feed motor turns on, the pick-up solenoid turns on
and the pick-up roller [F] lowers until it contacts the top sheet of the
paper stack and then sends it to the paper feed and separation roll-
ers.
When the paper feed sensor detects the leading edge of the paper,
the paper feed motor switches off, the pick-up roller lifts, and the
grip rollers [G] feed the paper out of the tray.
[D]
[C]
[E]
[F]
[B]
[A]