MX-M850 (serv.man36). Section 6 Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 10

MX-M1100  ADJUSTMENTS  6 – 10

When [EXECUTE] key is pressed during the adjustment oper-
ation, the operation is terminated and [EXECUTE] key returns
to the normal display.
When setting of the reference toner density control value has
failed, [EE-EU] or [EE-EL] is displayed.

<<Error display list (AUTO DEVE ADJUSTMENT)>>

 

 

This adjustment is needed in the following situations:
* The LSU has been replaced or removed.
* Print images are distorted.
This adjustment should be followed by:
* ADJ3C Adjust the print image off-center (print engine section)
1)

Enter the Sim.64-2 mode. 

2)

Set the conditions as shown below.

The paper feed tray with A3 (11 

✕ 17) paper in it is selected.

3)

Press [EXECUTE] button.
The grid pattern image is outputted.

4)

Check the printed grid pattern for distortions.
[Check Method 1]
Compare the front frame side and rear frame side of the
printed paper in terms of the distance between the outer end of
the grid pattern image and the edge of the paper.
No adjustment is needed if the difference between these
dimensions is within 0.5 mm.

[Check Method 2]
If the right-angle level of the traverse print line is 0.5mm or less
with respect to the longitudinal print line of paper, no adjust-
ment is needed.

Carry out the following work if the situation is unsatisfactory.

EE-EL

EL abnormality

Toner density sensor gain 
adjustment voltage is 2.0V 
or less.

EE-EU

EU abnormality

Toner density sensor gain 
adjustment voltage is 10.6V 
or above.

A

PRINT PATTERN 
(1 - 22, 53 - 58, 71 - 78 ) 

Used to specify the print 
pattern.
(* For details, refer to the 
following descriptions.)

5

B

DOT1 
(DOT1>=2 IF A : 2, 11) 

Used to set the print dot 
number. (Self print pattern: 
for m by n)

1

C

DOT2 
(DOT2 <= 100 IF A : 59) 

Used to set the empty dot 
number. (Self print pattern: 
for m by n)

254

D

DENSITY 
(FIXED ”255” IF A : 9) 

Used to specify the print 
gradation.

255

E

RESOLUTION (DPI) 

Used to select the 
resolution. (600DPI, 
1200DPI)

1

F

MULTI COUNT

Number of print

1

A

5

PRINT PATTERN 1 22, 53 -

-

, 71 78

B

1

DOT1 DOT1

2 IF A 2,11

C 254

DOT2 DOT2

100 IF A 59

D 255

DENSITY FIXED”255” IF A 9

0

A:

SIMULATION NO.64-02

SELF PRINT(BW) SERVICE

5

1

82

OK

TEST

EXECUTE

CLOSE

E

1

RESOLUTION(DPI)

F

1

MULTI COUNT

G

8

EXPOSURE 2 8 IF A:14 19

H

2

PAPER CS1

I

1

DUPLEX NO

J

1

PAPER TYPE PLAIN

58

-

G

EXPO
SURE 
(2 to 8 
IF  A  :   
14  to  19) 

THROUGH

Used to 
specify 
the 
exposure 
mode

No process 
(Through)

8 

(STAN

DARD

DITHER) 

CHAR/PIC

Text/Printed 
Photo

CHAR/
PRPIC

Text/ 
Photograph

CHAR

Text

PRINT PIC

Printed Photo

PRINT 
PAPER

Photograph

MAP

Map

STANDARD
DITHER

Dither without 
correction

R

F

b

a