DOWNLOAD Sharp AR-203 (serv.man5) Service Manual ↓ Size: 14.96 MB | Pages: 127 in PDF or view online for FREE

AR-203E/5420/M200/M201  OPERATIONAL DESCRIPTIONS  7 - 5

1) The figure below shows the positions of the pick-up roller, the

paper feed clutch sleeve, and the paper feed latch in the initial
state without pressing the COPY button after lighting the ready
lamp.
The paper feed latch is in contact with the projection of the
clutch sleeve.

2) When the COPY button is pressed, the main drive motor starts

rotating to drive each drive gear.
The pick-up drive gear also is driven at that time. Since, how-
ever, the paper feed latch is in contact with the projection of
the clutch sleeve, rotation of the drive gear is not transmitted to
the pick-up roller, which does not rotate therefore.

3) After about 0.1 sec from when the main motor start rotating,

the tray paper feed solenoid (PFS) turns on for a moment.
This disengages the paper feed latch from the projection of the
clutch sleeve, transmitting rotation of the pick-up drive gear to
the paper feed roller shaft, rotating the pick-up roller to feed
the paper.

4) After more than half rotation of the pick-up roller, the paper

feed latch is brought in contact with a notch on the clutch
sleeve, stopping rotation of the pick-up roller.

5) At this time, the paper is fed passed the paper entry detection

switch (PPD1), and detected by it. After about 0.15 sec from
detection of paper by PPD1, the tray paper feed solenoid
(PFS) turns on so that the clutch sleeve projection comes into
contact with the paper feed latch to stop the pick-up roller.
Then the pick-up roller rotates for about 0.15 sec so that the
lead edge of the paper is evenly pressed on the resist roller,
preventing against skew feeding.

6) To release the resist roller, the tray paper feed solenoid and

the resist solenoid are turned on by the paper start signal to
disengage the resist start latch from the clutch sleeve, trans-
mitting rotation of the resist drive gear to the resist roller shaft.
Thus the paper is transported by the resist roller.

7) After the resist roller starts rotating, the paper is passed

through the pre-transfer guide to the transfer section. Images
are transferred on the paper, which is separated from the OPC
drum by the drum curve and the separation section.

8) The paper separated from the drum is passed through the fus-

ing paper guide, the heat roller (fusing section), POD (paper
out detector) to the copy tray.

OFF

PFS

OFF

RRS

OFF

PFS

OFF

RRS

ON

PFS

OFF

RRS

OFF

PFS

ON

RRS

AR-203E/5420/M200/M201  OPERATIONAL DESCRIPTIONS  7 - 6

1) Before paper feed operation, the manual paper feed solenoid

(MPFS) is turned OFF as shown in the figure below.

2) When the PRINT button is pressed, the manual paper feed

solenoid (MPFS) turns on to disengage the manual paper feed
latch.
A from the manual paper feed clutch sleeve A, rotating the
manual paper feed roller and the manual take-up roller. At the
same time, the manual paper feed stopper opens and the
manual take-up roller is pressed to the surface of the paper to
start paper feeding.

3) When pawl C of the manual paper feed clutch sleeve is

engaged with the manual feed latch, the manual feed stopper
falls and the manual take-up roller rises. At that time, the man-
ual paper feed roller is rotating.

4) The lead edge of the transported paper is pressed on the

resist roller by the transport roller. Then the paper is stopped
temporarily to allow synchronization with the lead edge of the
image on the OPC drum.
From this point, the operation is the same as the paper feed
operation from the tray. (Refer to 7-5 - 8.)

5) The solenoid turns off to close the gate and return to the initial

state.

OF

MPFS

F

C

A

ON

MPFS

A

C

ON

MPFS

A

C

OF

MPFS

F

A

C

AR-203E/5420/M200/M201  OPERATIONAL DESCRIPTIONS  7 - 7

Set duplex documents on the document tray.

Set paper on the cassette. (In the duplex mode, the manual feed
tray cannot be selected.)

The document feed roller feeds the document from the paper feed
roller to the PS roller.

• The document is exposed in the exposure section, and trans-

ported to the document exit section by the lower transport roller
and the paper exit roller.

• The document is transported to the paper exit tray. (However, it is

not discharged completely.)

• The document is stopped once, and then switchback operation is

performed. (To the back copy)

The paper is passed through the paper feed roller and the PS roller,
and the images on the front surface are transferred.

• The paper is passed through the fusing section and the lower

side of the gate section to the paper exit tray side. (However, it is
not discharged completely.)

• The paper is stopped once, and switchback operation is per-

formed. (To the back copy)

By switchback operation, the document is sent through the upper
transport roller and the PS roller to the exposure section, where the
back surface of the document is exposed.

• The document is sent to the document exit section by the lower

transport roller and the paper exit roller.

• The document is sent to the intermediate tray. (However, it is not

discharged completely.)

• The document is stopped once, and switchback operation is per-

formed.

• The document is sent through the upper transport roller and the

PS roller and the exposure section (without being exposed) to the
document exit section.

• The document is discharged to the document exit tray.

Switchback operation is performed.

• The paper is sent through the upper side of the gate section and

the duplex transport section and the PS roller, and the images on
the back surface are transferred.

• The paper is sent through the fusing section and discharged to

the paper exit tray.

a

PPD1 jam

PPD1 does not turn off within 4 sec after 
turning on the resist roller.

b

PPD2 jam

PPD2 is off immediately after turning on the 
resist roller.

PPD2 does not turn off within 1.2 sec after 
turning off the resist roller.

c

POD jam 

POD does not turn on within 2.9 sec after 
turning on the resist roller.

POD does not turn off within 1.5 sec - 2.7 sec 
after turning off PPD2.

AR-203E/5420/M200/M201  OPERATIONAL DESCRIPTIONS  7 - 8

The front and the back are in upside down each other.

The front and the back are not in upside down.

Shift width: 2.5cm

The offset function by the shifter is turned ON/OFF by the user pro-
gram.

According to the setting, offset operation is performed for every job.
(Default: ON)