MX-M850 (serv.man24). Details of Each Section - N Fusing Section - Sharp Copying Equipment Service Manual (repair manual). Page 4

MX-M1100  FUSING SECTION  N – 4

The separation pawl of the upper heat roller is of the oscillation type
(oscillation width 3mm), and its operation is synchronized with the
web sheet feed. 
To clean the upper heat roller separation pawl, slow rising is per-
formed when rotating the heat roller, and dirt on the pawl is
attached to the upper heat roller and cleaned with the web sheet. 
The separation pawl of the lower heat roller is of the separation
type. 
The separation pawl of the lower heat roller separates and makes
contact when the heat roller is rotating and stopped, cleaning the
separation pawl. 
By the separation operation, dirt on the pawl is removed. The dirt of
the pawl attached to the roller is collected through the upper heat
roller and cleaned with the web sheet. 
This separation operation is controlled by the FRS (lower pawl sep-
aration solenoid). When starting rotation, separation is executed for
1sec. When stopping, separation is executed for 1.5 sec.

1)

Open the front cover (a), and pull out the intermediate frame
(b).

2)

While pushing the lever (a), slide the ADU paper exit unit (b).

3)

Remove the screw (a), and remove the cover (b) and the knob
(c).

4)

Remove the screw (a), and remove the rail (b).

Fusing unit

A

Fusing front lower PG home 
position detection

N - 5/a

B

Paper guide motor

C

WEB end detection

N - 5/b

D

WEB near end detection

E

Non-contact thermistor

N - 6/c

F

Thermostat

G

Thermostat

N- 6/d

H

Lower pawl separation solenoid

N - 7/e

G

E

F

D

A

B

C

H

a

b

a

b

a

a

b

c

a

b