Read Sharp AR-C270 (serv.man11) Service Manual online
9) Press the OK key on the operation panel.
The initial setup of half tone image correction is performed accord-
ing to this adjustment data.
ing to this adjustment data.
NOTE: When OK key is pressed, initial setup of half-tone image cor-
rection is started. During this operation, "Copy Quality is be-
ing adjusted" is displayed. It takes several minutes to
complete this operation.
ing adjusted" is displayed. It takes several minutes to
complete this operation.
After completion of this operation, "Please quit this mode" is
displayed.
displayed.
Do not cancel the simulation until "Please quit this mode" is
displayed.
displayed.
10) Check that the color balance check patch image printed at last is
within the specified range shown below.
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.
Use SIM 46-21 to print the color balance adjustment sheet and com-
pare each process (CMY) black patch color balance and the black
patch. This allows a correct check on the color balance adjustment re-
sult.
pare each process (CMY) black patch color balance and the black
patch. This allows a correct check on the color balance adjustment re-
sult.
If the color balance of each process (CMY) black patch in A – O is
near the black patch referring to the patch patch, it is judged that the
color balance has been correctly adjusted.
near the black patch referring to the patch patch, it is judged that the
color balance has been correctly adjusted.
If, however, the user requests to customize the color balance instead
of using the standard color balance and the color balance is in a satis-
factory level, go to Step 11).
of using the standard color balance and the color balance is in a satis-
factory level, go to Step 11).
If the color balance is not satisfactory, perform the manual color bal-
ance adjustment (ADJ M17/ADJ 3).
ance adjustment (ADJ M17/ADJ 3).
11) 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.
12) Use the test chart UKOG-0283FCZZ and check the copy color
balance and the density in Text/Photo mode. (Refer to the
section of the copy color balance and the density.)
section of the copy color balance and the density.)
If the copy color balance and density are not in the satisfactory
level, perform the following procedures.
level, perform the following procedures.
13) Perform initial setup of half tone image correction. (SIM 44-21)
14) Perform half tone image correction. (Forcible execution) (SIM
44-26)
15) Use the test chart UKOG-0283FCZZ and check the copy color
balance and the density in 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.)
Text/Printed photo mode (AR-C250/C160/C270). (Refer to the
section of the copy color balance and the density.)
Repeat procedures 13) – 15) until they are at the satisfactory level.
However, repetition is limited to three times.
If repetition of the above procedures does not set the copy color bal-
ance and the density to the specified level, there may be some other
reason.
ance and the density to the specified level, there may be some other
reason.
Investigate the reason and repair or fix the problem, then perform all
the procedures of print quality adjustment from the beginning.
the procedures of print quality adjustment from the beginning.
If the above conditions are not satisfied, perform the manual adjust-
ment (SIM 46-21) (ADJ M17/ADJ 3).
ment (SIM 46-21) (ADJ M17/ADJ 3).
(Auto color calibration by the user (Auto color balance
adjustment))
adjustment))
NOTE: This adjustment is based on the service target color balance
set with SIM 63-7 or 63-8. If, therefore, the above simulation
is not completed normally, this adjustment will not be com-
pleted normally.
is not completed normally, this adjustment will not be com-
pleted normally.
1) Enter the user program mode.
2) Enter the copy mode.
3) Press the auto color calibration key.
Max
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
C
M
Y
Bk
Fig. 1 PG image
High density
Low density
1) The max. density
section is not blurred.
section is not blurred.
3) Patch for each of C, M, Y, BK
The patch density is identical between patches or not
reversed.
The patch density is changed gradually.
reversed.
The patch density is changed gradually.
2) B - E patches of each color of
Y, C, M, and Bk are copied very
slightly.
Y, C, M, and Bk are copied very
slightly.
Patch A of each Y/M/C/K color is not copied.
Max
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
C
M
Y
Bk
Fig. 1 PG image
High density
Low density
CMY
mixed
color
mixed
color
1) The max. density
section is not blurred.
section is not blurred.
5) The gray balance for CMY mixed color
patch is not shifted so much.
patch is not shifted so much.
4) Patch for each of C, M, Y, BK
The patch density is identical between patches or not
reversed.
The patch density is changed gradually.
reversed.
The patch density is changed gradually.
3) B - E patches of each color of
Y, C, M, and Bk are copied very
slightly.
Y, C, M, and Bk are copied very
slightly.
2) Patch A of each Y/M/C/Bk
color is not copied.
color is not copied.
6) There is not so great
difference between
CMY mixed color and
BK monochrome.
difference between
CMY mixed color and
BK monochrome.
7 – 30
Click on the first or last page to see other AR-C270 (serv.man11) service manuals if exist.