Sharp MX-4100N Service Manual page 102

(Abnormal end (Auto transition))
After completion of the operation, the simulation is canceled.
8) Use the servicing color test chart (UKOG-0317FCZZ/UKOG-
0317FC11) 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 setting of the half tone image correction.
(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 procedures 9) - 11) are performed, the copy
color balance and density are not in the specified range, there may
be another cause.
Troubleshoot the cause and repair or perform proper treatments,
and try all the procedures of the print image adjustment from the
beginning.
If the automatic adjustment cannot obtain satisfactory results of the
copy color balance and density, use SIM 46-21 (ADJ 20C) (Manual
adjustment).
20-C
This adjustment is needed in the following situations:
* 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) section 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.
a. General
The color balance adjustment (Manual adjustment) is used to
adjust the copy density (15 point for each color) of CMYK. This is
used at the following situation. When the result of auto adjustment
described above is not existing within the range of reference. When
a fine adjustment is required. When there 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 automatic color bal-
ance adjustment in advance, and execute this adjustment for better
efficiency.
b. Note for the color balance adjustment (Manual adjustment)
1) The print engine section must have been properly adjusted.
2) The CCD gamma must have been properly adjusted.
3) Set the color patch image adjustment pattern on the document
table, and place 5 sheet of white paper on it.
4) Be sure to use the specified paper for color.
MX-5001N ADJUSTMENTS 5 – 60
Copy color balance adjustment (Manual
adjustment)