AR-RF3 (serv.man2). AR-RF3 Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 9

AR-RF3  MACHINE OPERATIONS  4 - 2

START

Step 01:

The transport section is closed. (AOSW/FOS OFF)

Step 02:

An original is set in the original tray.
(EMPS output LOW)

Step 03:

Print SW ON.

(Preliminary feed): For the first original, dummy discharge is 

performed.

Step 04:

Document feed motor (DFM) forward rotation.
(Pickup roller and document feed roller rotate.)
Original stopper is released, and original feed starts.

Step 05:

Transport motor (DTM), delivery motor (DEM) forward 
rotation.
(Transport belt and reverse roller rotate.)
*A: If there was an original already present in the tray, it

is discharged.

*A

Step 06:

Document exit sensor (DES) detects leading edge of 
discharged original.
(DES output HIGH)

*A

Step 07:

Transport motor (DTM) and delivery motor (DEM) rpm 
decrease.

Step 08:

Resist sensor (REGS) detects leading edge of original.
(REGS output HIGH)

Step 09:

Original contacts resist rollers and stops.
Document feed motor (DFM) OFF.

Step 10:

Document feed motor (DFM) reverses direction.
(Resist rollers rotate.)
The leading edge of the original is taken up by the resist 
rollers.

Step 11:

Original timing sensor (TIMS) detects leading edge of 
original.
(TIMS output HIGH)

Step 12:

Document feed motor (DFM) OFF.
(The original is stopped with its leading edge taken up by 
the resist rollers.)

*A

Step 13:

Document exit sensor (DES) detects trailing edge of 
discharged original.
(DES output LOW)

*A

Step 14:

Original is discharged.

Step 04

Step 05

Step 06

Step 07

Step 08

Step 09

Step 10

Step 11

Step 12

Step 13

Step 14