Sharp Mx 2300n Service Manual

MX-2300/2700 N/G  ADJUSTMENTS  6 – 47
 20-L Color document identification level (ACS
operation) setting
When the machine is used with some adjustment values changed
from the default values, this adjustment is required in the following
cases.
* When a U2 trouble occurs.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* When the user requests for the adjustment.
This setting is used to set the recognition level of a color image in a
document.
The actual ACS operation is...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 48 (NOTE) Though the judgment reference in the color auto mode of
device setting is set to 5: Monochrome, if a monochrome docu-
ment is not recognized as a monochrome document, increase the
set value of the set item A TH ACS5 ENLARGE (area level 5).
After entering the set value, press [OK] key to save the set value to
the memory.
Except for the above set item, do not change the setting in the mar-
ket. Set it to the default value.
 
21Printer color balance/density...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 49 (2) Flow of printer color balance/density adjustment procedures
START
Process correction is forcibly
performed. (SIM 44-6)
Execute the half tone image
correction. (SIM 44-26)
Check the printer color balance/
density. (Check the test pattern
of SIM 64-5.)
Are the copy
color balance and density
at satisfactory
levels?No
(to Next page)
Ye s
(to Next page): Standard adjustment flow
Is PCL mode
supported?
Ye sNo
Use SIM 67-25 to the color balance
check sheet, and check...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 50
4
Change the color balance/
density adjustment factory
targets. (SIM 67-26)
Make the factory printer balance target
(when adjusting the printer color
balance/density with SIM 67-24) same
as the service color balance target and
the color balance target when adjusting
the density. (SIM67-28)
NoCan the
printer color balance and
density be adjusted to satisfactory
levels with the fine
adjustment?
Perform the manual adjustment of ADJ 21C
printer color balance, density...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 51 (3) Printer color balance/density check
(Note)
Before checking the copy color balance and the density, be sure to
execute the following procedures in advance.
* Execute the high density image correction (process correction)
forcibly. (SIM 44-6)
* Execute the half tone image correction forcibly. (SIM 44-26)
(Procedure)
a. When the PCL mode is supported:
Execute SIM 64-5 to print the print test pattern.
Set each set value to the default and press [EXECUTE] key. The...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 52 3) Set the color patch image (adjustment pattern) paper printed in
procedure 2) on the document table.
Place the printed color patch image (adjustment pattern) paper
so that the thin lines on the paper are on the left side. Place 5
sheets of white paper on the printed color patch image (adjust-
ment pattern) paper.
4) Press [FACTORY] key on the operation panel, and press
[EXECUTE] key.
When the color balance is customized with the manual color
balance adjustment (SIM...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 53 (Method 2)
By printing the color balance adjustment sheet with SIM 67-25
and comparing each process (CMY) black patch color balance
with the black patch, the color balance adjustment can be
checked more precisely.
(Method 3)
(This method cannot be used when the machine supports only
the GDI mode.)
When the PCL mode is supported, use SIM 64-5 to print the
print test pattern.
Set each set value to the default and press [EXECUTE] key,
and the print test pattern is...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 54 c. Adjustment procedure
1) Enter the SIM 67-25 mode.
2) Press [EXECUTE] key. (A3 or 11 x 17 paper is automatically
selected.)
The color balance adjustment pattern is printed.
3) Check that the following specification is satisfied or the desired
color balance is obtained.
If the above specification is not satisfied, perform the following
procedures.
The print density must be changed gradually from the lighter
level to the darker level. The density changing direction...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 55 (Abnormal end (Auto transition))
9) After completion of the operation, cancel SIM 44-26.
10) Use SIM 64-5 to print the print test pattern again.
Set each set value to the default and press [EXECUTE] key.
The print test pattern is printed out.
The print density must be changed gradually from the lighter
level to the darker level. The density changing direction must
not be reversed. The density level of each color must be
almost at the same level.
If the color balance...

MX-2300/2700 N/G  ADJUSTMENTS  6 – 56 • Relationship between the factory target and the service target and the color balance target for the user color balance adjustment in the
printer color balance adjustment (SIM 67-24)
• Factory target in the printer color balance adjustment (SIM 67-24)
By use of SIM 67-26, one of the following color balances can be set as the factory color balance target.
Each of the three color balances cannot be changed. (Fixed)
• Service color balance target in the copy color...