MX-M850 (serv.man16). Details of Each Section - E Tray Paper Feed Section - Sharp Copying Equipment Service Manual (repair manual). Page 7

MX-M1100  TRAY PAPER FEED SECTION  E – 7

The paper transported from the each tray section is sent to the
paper exit roller (which is driven by the paper exit motor (POM))
with the transport roller. 

When face-down print is selected, the paper is passed under the
Face-up/face-down select gate. 
After paper passing, the paper exit gate guide falls down by its own
weight. 
When the specified time has passed from detection of the paper
lead edge by Face down reverse detection, Paper exit reverse
motor (SBRM) rotates reverse direction in the specified time. (The
rotation time differs depending on the paper size.)

1)

Open the front cover (a).

2)

Remove the waste toner bottle (a).

: Normal speed

540

400

(Process speed)

: High speed

600

500

(Paper feed and exit speed)

: High speed

1000

1000

(Switchback speed)

1

1

2

Face-up/face-down select gate

1

2

3

Face down reverse detection

2

3

3

1

2

Fase-up/fase-down
select gate solenold
OFF-up, ON-Down

Tray 3, 4 paper feed
Unit

A

Cassette 3, 4 upper limit 
detection

E - 9/a

B

Cassette 3, 4 paper empty 
detection

C

Cassette 3, 4 paper entry 
detection

D

Cassette 3, 4 pickup solenoid

C

B

A

D

a

a