Read Sharp AR-C270 (serv.man11) Service Manual online
The print density should vary gradually from the lower density to the
higher density without reversion of changing direction.
higher density without reversion of changing direction.
The density level of each color should be almost the same.
It is acceptable for patch B not to be copied.
Patch A is not copied.
When, however, the color balance is adjusted according to the user’s
request, there is no need to adjust to the standard color balance as
stated above.
request, there is no need to adjust to the standard color balance as
stated above.
5) Select the color to be adjusted and select the adjustment point
with the scroll key.
6) Enter the adjustment value with the 10-key and press the OK key.
The adjustment value can be selected in the range of 245 – 755 (1
– 999). When SIM 46-24 is used to perform the automatic color
balance and the density adjustment, all the set values of this simu-
lation are set to 500.
To increase the density, increase the adjustment value. To de-
crease the density, decease the adjustment value.
– 999). When SIM 46-24 is used to perform the automatic color
balance and the density adjustment, all the set values of this simu-
lation are set to 500.
To increase the density, increase the adjustment value. To de-
crease the density, decease the adjustment value.
Repeat procedures 3) – 6) until the condition of procedure 4) is satis-
fied.
fied.
When the overall density is low or patch A is copied with a high den-
sity, use the arrow keys to change all the adjustment values of A - 0
simultaneously and uniformly.
sity, use the arrow keys to change all the adjustment values of A - 0
simultaneously and uniformly.
Then perform the patch density adjustment. This allows to make an
efficient adjustment.
efficient adjustment.
By using the black patch as the reference, adjust so that the color bal-
ance of the black patch of each process (CMY) in A - 0 becomes vir-
tually same as the black patch.
ance of the black patch of each process (CMY) in A - 0 becomes vir-
tually same as the black patch.
In this simulation mode, press CLEAR key to return to the normal
copy mode and make actual copies of the service chart and user
documents. Check the adjustment result.
copy mode and make actual copies of the service chart and user
documents. Check the adjustment result.
7) Execute SIM 44-21.
The initial setup of half tone image correction is performed.
This procedure is to store the copy color balance adjustment data as
the reference data for half-tone correction.
the reference data for half-tone correction.
This procedure should be always executed immediately after comple-
tion of ADJ M17/ADJ 3 (Color balance adjustment (Manual)) with SIM
46-21.
tion of ADJ M17/ADJ 3 (Color balance adjustment (Manual)) with SIM
46-21.
When ADJ M17/ADJ2 (Color balance adjustment (Auto)) is performed
with SIM 46-24, this procedure is automatically performed.
with SIM 46-24, this procedure is automatically performed.
When EXECUTE key is pressed, it is highlighted and the operation is
started.
started.
It takes several minutes to complete the operation. When the opera-
tion is completed, the screen returns to the original state. After com-
pletion of the operation, cancel the simulation.
tion is completed, the screen returns to the original state. After com-
pletion of the operation, cancel the simulation.
8) Execute the half tone image correction. (Forcible execution) (SIM
44-26)
When EXECUTE key is pressed, it is highlighted and the operation is
started. It takes several minutes to complete the operation. When the
operation is completed, the screen returns to the original state.
started. It takes several minutes to complete the operation. When the
operation is completed, the screen returns to the original state.
After completion of the operation, cancel the simulation.
9) Use the test chart UKOG-0283FCZZ and check the copy color bal-
ance and the density in the Text/Photo mode (AR-C150)
Text/Printed photo mode (AR-C250/C160/C270). (Refer to the
section of the copy color balance and the density check.)
Text/Printed photo mode (AR-C250/C160/C270). (Refer to the
section of the copy color balance and the density check.)
If the copy color balance and the density are not in the specified level,
repeat procedures 7) through 9) until they are in the specified level.
repeat procedures 7) through 9) until they are in the specified level.
However, repetition is limited to three times. If repetition of the above
procedures does not set the copy color balance and the density to the
specified level, there may be some other reason. Investigate the rea-
son and repair or fix the problem, then perform all the procedures of
print quality adjustment from the beginning.
procedures does not set the copy color balance and the density to the
specified level, there may be some other reason. Investigate the rea-
son and repair or fix the problem, then perform all the procedures of
print quality adjustment from the beginning.
10) When the color balance is customized, register the color balance
as the service target by SIM 63-7. (AR-C150/C250/C160/C270)
When the color balance is not customized, there is no need to
perform this work.
If the customized color balance is registered as the service
target, when the color balance is adjusted in the next time, the
automatic color balance adjustment mode can be used. In the
next color balance adjustment, select the service target color
balance in the automatic color balance adjustment mode, and
the color balance will be adjusted to the same color balance as
registered this time.
When the color balance is not customized, there is no need to
perform this work.
If the customized color balance is registered as the service
target, when the color balance is adjusted in the next time, the
automatic color balance adjustment mode can be used. In the
next color balance adjustment, select the service target color
balance in the automatic color balance adjustment mode, and
the color balance will be adjusted to the same color balance as
registered this time.
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