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MX-2640N MX-2640NR MX-2640FN MX-3140N MX-3140NR MX-3140FN MX-3640N MX-3640NR MX-3640FN (serv.man36)
Pages
127
Size
65.06 MB
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Service Manual
Brand
Device
Copying Equipment / Service Manual Revised June 2014.
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Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man36) Service Manual ▷ View online

MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 38
10) When  "COMPLETED T HIS  PROCEDURE"  is displayed ,  the
adjustment operation is completed.
Cancel SIM46-74.
The  adjustment  result becomes valid  only  when  the both
adjustments  in the  copy  mode  and  in  the  printer  mode  are
completed.
For example, if the copy  color balance adjustment (automatic
adjustment) is performed and the simulation is canceled, the
adjustment result is invalid.
11) Check the copy color balance and density.
(Refer  to  the item of  the  copy co lor  balance  and den sity
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
63-11 and repeat the procedures from 1).
If  a satisfacto ry  result  is  not  obtained  with  the  above proce-
dure, perform the manual color balance adjustment (ADJ 10C
(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
10C (2)).
12) Check the printer 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 7), 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 7) 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-C
Copy quality adjustment (Basic adjustment)
This adjustment must be performed in the following cases:
* When a consumable part (developer, OPC drum, transfer belt) is
replaced.
* The CCD unit has been replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
 
10-C
(1)
Copy color balance and density adjustment 
(Automatic adjustment)
a. General
The  color  balance  adjustment (automatic  adjustment)  is  used to
adjust  the co py  density of  each  of  Cyan,  Magenta,  Yellow,  and
Black automatically.
When this adjustment is executed, the color balance  adjustments
of all the copy modes are revised.
There  are following  two  modes  in the auto color balance   adjust-
ment.
1) Auto color balance adjustment by the ser viceman (SIM 46-24
is used.)
2) Auto color balance adjustment by the user (The user program
mode is used.) (The color balance target is the service target.)
The auto color balance  adjustment by the use r is provided to
reduce the number of service calls.
If the copy color balance is lost for some reason, the user can
use this color balance adjustment to recover the balance.
When, however, the machine has a fatal problem or when the
machine  condition  is gr eatly  changed,  this  function  does not
work effectively.
If the machine condition is dramatically changed, a fatal prob-
lem  occurs,  or the normal color t argets  cannot  be obt ained,
service must recalibrate the machine to specification.
To perform the adjustment, the above difference must be fully
understood.
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MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 39
b. Adjustment procedure
(Auto color balance adjustment by the serviceman)
YES
NO
NO
YES
YES
NO
Copy color balance and density adjustment (Automatic adjustment)
(SIM46-24) procedure flowchart
Start
Execute ADJ10C(1) Copy color balance and density adjustment
(automatic density).
Enter the SIM46-24 mode, and select A4 (11" x 8.5") paper.
(Automatic selection)
Press [EXECUTE] key. (The adjustment pattern is printed.)
Set the adjustment pattern on the document table. Select the
FACTORY target or the SERVICE target, and press [EXECUTE] key.
(The adjustment pattern is scanned, and the adjustment is
automatically performed to print the check pattern.) (*1)
Check the printed check pattern for any streaks or unclear copy. (*4)
Press [OK] key, and the initial setting of the halftone image correction
is automatically performed. (*3)
Cancel SIM46-24
Check the color balance and density adjustment result.
Use the test chart (UKOG-0326FCZZ/UKOG-0326FC11) to make a
copy in the Text/Printed Photo mode, and check the copy color bal-
ance and density.
Use SIM46-21 to print the color balance check pattern, and check the
patch color balance and density in the process gray. (If the color bal-
ance is slightly shifted to Magenta, it is properly adjusted.)
Are the color balance and den-
sity at the satisfactory level?
Check that the initial setting of the halftone image correction was properly
performed. (*3)
Execute the initial setting of the halftone image correction.
(SIM44-21)
Execute the halftone image correction. (SIM44-26)
Use the test chart (UKOG-0326FCZZ/UKOG-0326FC11)
to make a copy in the Text/Printed Photo mode, and check
the color balance and density.
Are the color balance and den-
sity at the satisfactory level?
End
Automatic color balance target change
Change the color balance and
density target. (SIM63-11)
Though the
FACTORY color
balance and density
target (available in 3 kinds)
is changed, satisfactory color
balance and density are not
obtained (SIM63-11),
or the SERVICE
target is selected.
*1:
When the copy color balance and density are
customized and registered as the SERVICE
target, select the SERVICE target.
*2:
If satisfactory color balance and density are
not obtained with ADJ10C(2) (Manual copy
color balance and density adjustment)
(SIM46-21/44-21), check the print engine for
any problems.
*3:
If the initial setting of the halftone image
correction is not properly made, satisfactory
color balance and density cannot be
obtained. In this case, check the print engine
for any problems.
*4:
If there is any streak or unclear copy on the
printed check pattern, check the print engine
for any problems.
Execute ADJ10C(2) (Manual copy color
balance and density adjustment).
(SIM46-21/44-21).(*2)
MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 40
1) Enter the SIM 46-24 mode.
2) Press [EXECUTE] key. (A4/11" x 8.5" or A3/11" x 17" paper is
automatically selected.)
The color patch image (adjustment pattern) is printed out.
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
on the document table so that the thin lines on the  paper are
on the left side. Place 5 sheet s of white p aper on the pr inted
color patch image (adjustment pattern) paper.
4) Select [FACTORY] target, and press [EXECUTE] key.
When the color balance is customized with the manual color
balance  adjustment ( SIM  46-21)  according  to  the  user's
request and the color balance is registered as the service tar-
get with SIM 63-7, if the color balance is adjusted to that color
balance, select the service target.
The copy color balance adjustment is automatically executed
to  print  the  color  balance  check  patch  image.  Wait  until  the
operation panel shown in procedure 5) is displayed.
5) Press [OK] key on the operation panel.
According to data of this adjustment, the initial setting of the
halftone image correction is performed.
After pressing [OK] key, the initial setting of the halftone image
correction is started. During the operation, "NOW REGISTER-
ING  THE  NEW TARGET  OF HALFTONE  PROCON."  is  dis-
played. This operation takes several minutes.
After  completion  of the operation, "PLEASE
  QUIT  THIS
MODE" is displayed.
Do  not cancel   the  simulation  until  "PLEASE QUIT THIS
MODE" is displayed.
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MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 41
6) Check the color balance and density.
(Refer  to  the item of  the  copy co lor  balance  and den sity
check.)
7) Use SIM44-26 to execute the halftone image correction. 
(Forcible execution)
Enter the SIM44-26 mode and press [EXECUTE] key.
[EXECUTE] key is highlighted and the operation is started.
It takes several minutes to complete the ope ration. After com-
pletion of the operation, "COMPLETE" is displayed.
(Normal end (Auto transition))
(Abnormal end (Auto transition))
After completion of the operation, the simulation is canceled.
8) Use  the  servicing color  test  chart  (UKOG-0326FCZZ/UKOG-
0326FC11) in the Text/Photo mode (Manual) to check the copy
color balance and density. (Refer to the item of the copy color
balance and density check.)
If the copy color balance and density are not satisfactory, per-
form the following procedures.
9) Execute  the initial settin g  of the   halftone  image corr ection.
(SIM 44-21)
10) Execute  the half tone  image  correction. ( Forcible  execution)
(SIM44-26)
11) Use  the  servicing  color  test chart   (UKOG-0317FCZZ/UKOG-
0317FC11) in the Text/Printed Photo mode (Manual) to check
the copy color balance/density. (Refer to the item of the copy
color balance and density check.)
Though  the above procedur es  9)  - 11)  are per formed,  the  copy
color balance and density are not in the specified range, there may
be another cause.
Troubleshoot  the ca use,  repair  or  perform  necessary works, and
repeat the adjustment from the beginning.
When satisfactory color balance and density are not obtained from
the automatic adjustment by selecting the factory t arget in proce-
dure 4), change the factory color balance target with SIM 63-11 and
repeat the procedures from 1).
If a satisfactory result on the co lor balance and the density is not
obtained  with the a utomatic  adjustment,  execute  the manual
adjustment (SIM 46-21) (ADJ 10C (2)).
Also when the service target is selected in procedure 7) to execute
the automatic adjustment and a satisfactory result is not  obtained,
perform the manual color balance adjustment (ADJ 10C(2)).
If the color balance or density is  not in the satisfactory level even
after  execution of the automa tic  and manual adju stments,  there
may be another cause.
Troubleshoot  the ca use,  repair  or  perform  necessary works, and
repeat the adjustment from the beginning.
 
10-C
(2)
Copy color balance and density adjustment 
(Manual adjustment)
a. General
The  color  balance adjustme nt  (Manual  adjustment)  is  used  to
adjust the copy density of CMYK. This is used at the following situ-
ation. When the result of auto adjustment described above is not
existing within the range of reference. When a fine adjustme nt is
required. When there is request from the user for changing (cus-
tomizing) the color balance.
This manual adjustment is executed only for the color patch which
could not adjusted properly in the automatic adjustment.
If the co lor balance is improper, execute the automatic color bal-
ance adjustment in advance, and execute this adjustment for better
efficiency.
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