AL-1045 (serv.man8). Operational descriptions - Sharp Copying Equipment Service Manual (repair manual). Page 8

AL-1555 OPERATIONAL DESCRIPTIONS 7 - 8

1) When SPPD is ON (document remaining) when the power is

turned on.

2) When SPPD is not turned ON within about 1.5 sec (at 100% copy)

after starting the document feed operation.

3) When SPPD is not turned on within about 4.7 sec (at 100% copy)

after turning on SPPD.

4) When the SPF document jam release door or the OC cover is

opened during document transport (SPF motor rotating).

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 sent to the

document exit section

• by the transport/paper exit roller.

• R-SPF gate solenoid ON

• The document is sent to the intermediate tray.

(but not discharged completely.)

• The document is stopped once, then switchback operation is

performed. 

(To the back copy)

The document is passed through the paper feed roller and the PS
roller by the paper feed 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, (but not discharged

completely.)

• It is stopped once and switchback operation is performed.

(To the back copy)

SPID ON

PSW ON

MIRM rotation

MM rotation

CPFS ON

SPFM rotation

SPUS ON

Document set

Document set sensor

Document feed unit lamp ON

PPD ON

RRC ON

SPPD ON

POD ON

Copy start

The scanner is shifted
to the exposure position.

(Copier side)

Main motor rotation

Paper feed

Synchronization

(Transfer)

(Fusing)

(Document exit)

Paper transport

(Exposure)

In the zooming mode, the magnification ratio in the sub 
scanning direction (paper transport direction) is adjusted
by changing the document transport speed.

(Paper exit)

SPF motor rotation

Document feed

Document transport sensor

Document transport

(SPF side)

Time chart (Tray feed)

752msec

625msec

756msec

PSW

MIRR M

SPF M

CL

SPUS
SPPD

SCANST

MAIN M

CPFS1

RRS
PPD1

PPD2

POD