AR-LC5 (serv.man3). AR-LC5 Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 9

AR-LC5  OPERATIONAL DESCRIPTIONS  5 - 2

When the tray is stationary at the paper feed position (upper limit sen-
sor: LUD ON position) and there is paper on the tray, paper feed oper-
ation can be performed.

Paper feed operation is performed by the transport motor (LPFM), the
transport clutch (LTRC), the paper feed clutch (LPFC), and the paper
feed solenoid (LPFS) at the following timing.

With the transport motor (LPFM) ON (rotating), when the transport
clutch (LTRC) is turned on, the transport roller rotates. When the paper
feed clutch (LPFC) is turned on under this state, the paper feed roller
and the take-up roller rotate. (With the transport clutch OFF, though
the paper feed clutch is turned on, the paper feed roller and the take-
up roller don't rotate.)

When the paper feed solenoid (LPFS) is turned on, the take-up roller is
pushed down to press paper.

When the tray moves up and stops at the paper feed position, and dur-
ing paper feed operation, paper empty in the tray is detected by the
paper empty sensor (LPED).

When paper empty in the tray is detected, the lift motor is turned on to
move the tray down, and the tray stops at the tray open/close allow
position (lower limit sensor ON position).

1

Paper feed roller clutch

2

Take-up roller

3

Paper feed roller

4

Paper feed solenoid 

JOB start reception

JOB end reception

Paper feed start reception

LPFM

(Transport motor output)

LTRC

(Transport clutch)

LPFC

(Paper feed clutch)

LPFS

(Paper feed solenoid)

LPFD

(Transport sensor)

PPD2

(Machine sensor)