MX-2640N, MX-2640NR, MX-2640FN, MX-3140N, MX-3140NR, MX-3140FN, MX-3640N, MX-3640NR, MX-3640FN (serv.man9). Service Manual Revised June 2014. - Sharp Copying Equipment Service Manual (repair manual). Page 108

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MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 65
6) Check the color balance and density.
(Refer  to the  item  of the  printer  color balance  and  density
check.)
When satisfactory color balance and density are not obtained
from the automatic adjustment by selecting the factory target in
procedure 4), change the factory color balance target with SIM
67-26 and repeat the procedures from 1).
If a satisfactory result on the color ba lance and the density is
not obtained with the automatic adjustment, execute the man-
ual adjustment (SIM 67-25) (ADJ 10E (2)).
Also when the service target is selected in procedure 4) to exe-
cute the automatic adjustment and a satisfactory result is not
obtained, perform the manual  color balance adjustment (ADJ
10E (2)).
If the color balance or density is not in the satisfactor y level even
after  execution of   the  automatic and man ual  adjustments,  there
may be another cause.
Troubleshoot  the cause, rep air  or  perform  necessary  works,  and
repeat the adjustment from the beginning.
 
 
10-E
(2)
Printer color balance adjustment 
(Manual adjustment)
a. General
The  color b alance  adjustment  (Manual  adjustment)  is  used to
adjust the printer density of C, M, Y and K . This is used at the fol-
lowing  situation. When the r esult  of auto adjustment descr ibed
above  is not existing   within  the  range  of refer ence.  When  a fine
adjustment  is requ ired.  When the re  is  request  from  the  user  for
changing (customizing) the color balance.
In this manual adjustment, adjust only the color patch which could
not adjusted properly in the automatic adjustment.
If the color balance is improper, execute the auto matic color bal-
ance adjustment in advance, and execute this adjustment for better
efficiency.
b. Adjustment procedure
YES
NO
Printer color balance and density adjustment (Manual adjustment) procedure
flowchart (SIM67-25)
Start
Execute ADJ10E(2) (Printer color balance and density
adjustment (Manual adjustment). (*1)
Enter the SIM67-25 mode, and select A4
(11" x 8.5") paper. (Automatic selection.)
Press [EXECUTE] key.
(The adjustment pattern is printed.)
Check the printed adjustment check pattern,
and select a target adjustment color with the
color keys (C,M,Y,K).
Select a target adjustment density level with the
scroll key.
Enter the adjustment value with 10-key.
Press [EXECUTE] key.
(The adjustment pattern is printed.)
Are the color balance
and density at the sati-
sfactory level?
Cancel the SIM67-25 mode.
Set the SERVICE target for the
automatic printer color balance
adjustment. (SIM67-27)
End
Check the patch color balance and density in the
process gray of the color balance check pattern.
(If the gray color is slightly shifted to Magenta,
the color balance is properly adjusted.)
*1:
If satisfactory color balance and density are not
obtained with the adjustment, check the print
engine for any problems.
YES
NO
Is the PCL printer
function provided?
YES
NO
Are the color balance and
density at the satisfactory
level?
Use SIM64-5 to print the self print
check pattern, and check the
printer color balance and density.
Use SIM67-25 to print the self print
check pattern, and check the
printer color balance and density.
Check the self print check pattern to check the printer color balance and
density adjustment.
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