Sharp AR-LC6 Servicehandleiding - Pagina 5

Blader online of download pdf Servicehandleiding voor {categorie_naam} Sharp AR-LC6. Sharp AR-LC6 20 pagina's. Digital copier/printer/ multifunctional system option large capacity tray

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: Jan. 9 2004

[4] OPERATIONAL DESCRIPTIONS

1. Lift operation

When the main unit is turned ON, if the tray is at the lower limit position

(lower limit sensor: LLD ON position), the lift motor is turned ON to lift

the tray.

When the paper presence/empty sensor (LPED) is turned ON within

800 pulses of the encoder signal from start of lifting up the tray, the lift

motor is turned OFF to stop the tray, and the paper feed solenoid is

turned ON to mode down the pickup roller. After that, the lift motor is

turned ON to lift the tray. The tray is stopped when the upper limit sen-

sor (LUD) is turned ON.

Lifting up operation (When LPED is turned ON within 800 pulses

of encoder.)

LLM

(Lift motor output)

LLD

(Lower limit sensor)

LUD

(Upper limit sensor)

LPED

(Paper empty detection)

LPSL

(Solenoid)

Within 800 pulses

LRE

(Encoder signal)

2. Paper feed operation

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 (LTM), the

transport clutch (LTCL), the paper feed clutch (LPFCL), and the paper

feed solenoid (LPSL) at the following timing.

LCC paper feed time chart

Paper feed start

Clearance-between-

papers control timer

LTM

(Transport motor)

LTD

(Transport sensor)

PIC drop timer

LPSL

(Paper feed solenoid)

Paper feed clutch

LPFCL

(Paper feed clutch)

LTCL

(Transport clutch)

TRC

(Main unit

synchronous signal)

Preliminary

paper feed start

First sheet

Preliminary paper

feed complete

Paper feed start

200 msec

Clearance-between-

papers control timer

PIC drop timer

Paper feed clutch

OFF timer

Preliminary

paper feed start

Second sheet

Third sheet

Preliminary paper

feed complete

Paper feed start

AR-LC6 OPERATIONAL DESCRIPTIONS 4 - 1

If the paper presence/empty sensor (LPED) is not turned on within 800

pulses, the paper feed solenoid is turned ON with the lift motor ON to

move down the pickup roller. Then, the lift motor is turned ON again to

lift the tray. The lift motor is stopped at the upper limit sensor (LUD) ON

position, and the paper feed solenoid is turned OFF.

When the machine power is turned on, if the tray is on the paper feed

position, lifting is not performed.

When the tray is pulled out, it moves down by its own weight.

Lifting up operation (When LPED is not turned ON within 800

pulses of encoder.)

LLM

(Lift motor output)

LLD

(Lower limit sensor)

LUD

(Upper limit sensor)

LPED

(Paper empty detection)

LPSL

(Solenoid)

LRE

(Encoder signal)

When the transport clutch (LTCL) is turned ON with the transport motor

(LTM) ON (rotating), the transport roller rotates. When the paper feed

clutch (LPFCL) is turned on under this state, the paper feed roller and

the take-up roller rotate. When the paper feed solenoid (LPSL) is

turned ON, the take-up roller is pushed down to press paper.

Resist stop

Clearance-between-

papers control timer

PIC drop timer

Paper feed clutch

OFF timer

Preliminary

paper feed start

Fourth sheet

Preliminary paper

feed complete

Paper feed start

Within 800 pulses

Resist stop

Clearance-between-

papers control timer

PIC drop timer

Paper feed clutch

OFF timer

Preliminary

paper feed start

Fifth sheet

Preliminary paper

feed complete

OFF timer