Sharp MX-C301 / MX-C301W (serv.man5) Service Manual ▷ View online
MX-C301 ADJUSTMENTS 5 – 11
8)
When the adjustment is made by turning the LSU skew adjust
ment screw of K, the states of C, M and Y (SKEW) are
changed. Execute SIM50-22 to check to confirm that C, M, and
Y (SKEW) result in "OK" being displayed on the operation
panel.
Image registration adjustment is done automatically and
SKEW _C, M, Y value is displayed.
ment screw of K, the states of C, M and Y (SKEW) are
changed. Execute SIM50-22 to check to confirm that C, M, and
Y (SKEW) result in "OK" being displayed on the operation
panel.
Image registration adjustment is done automatically and
SKEW _C, M, Y value is displayed.
9)
If there are several skewed areas on the test printing result,
turn all the LSU skew adjustment screws shown in the figure *
To make "SKEW_*" values in the following ranges, turn the
LSU skew adjustment screws clockwise direction (a) or coun-
terclockwise direction (b).
SKEW_C : +/-30, SKEW_M : +/-40, SKEW_Y : +/-20
turn all the LSU skew adjustment screws shown in the figure *
To make "SKEW_*" values in the following ranges, turn the
LSU skew adjustment screws clockwise direction (a) or coun-
terclockwise direction (b).
SKEW_C : +/-30, SKEW_M : +/-40, SKEW_Y : +/-20
10) Enter the SIM61-4 mode and perform the procedures of 2) - 3).
Check the printed color image skew pattern.
In each Y/M/C color print pattern printed separately in the F side and in the R side, note the same print color pattern and check to confirm
that the front frame side and the rear frame side are in the same condition.
that the front frame side and the rear frame side are in the same condition.
Rough adjustment pattern check:
Check the sub scan rough adjustment color image shift check section on the R side and the F side of each color, use the black scale of "0"
as the center reference, and check the balance in shifts of the color image line positions in the positive and the negative directions. The
balance in the R side must be the same as that in the F side.
as the center reference, and check the balance in shifts of the color image line positions in the positive and the negative directions. The
balance in the R side must be the same as that in the F side.
C
M
Y
B
A
1
‘16/May
1
MX-C301 ADJUSTMENTS 5 – 12
Fine adjustment pattern check:
Check the square frames on the R side and the F side of each
color. (Normally five sections of high density can be seen.)
Check the sub scanning direction position of the center area of
high density (one of the above five sections). These must be
on the same position on the R side and the F side.
color. (Normally five sections of high density can be seen.)
Check the sub scanning direction position of the center area of
high density (one of the above five sections). These must be
on the same position on the R side and the F side.
In this case, use the sub scan direction color image shift check
scale (fine adjustment) as the reference.
scale (fine adjustment) as the reference.
Visually check the color density and make the darkest section
as the center, and use it as the read value of the shift amount.
as the center, and use it as the read value of the shift amount.
Check that the difference in the center position of the dark den-
sity section is within +/- 2 step.
sity section is within +/- 2 step.
The positional relations of the front and the rear frame of the
print color patterns of a same color are compared. There is no
need that all the colors are in the same state. Compare only
the positional relations of color patterns of a same color.
print color patterns of a same color are compared. There is no
need that all the colors are in the same state. Compare only
the positional relations of color patterns of a same color.
If the above condition is not met, do the following:
11) Turn the image skew adjustment screw of the target color to
adjust.
Relationship between the adjustment screw rotating angle and
the change in the adjustment image position:
the change in the adjustment image position:
Adjustment screw rotating angle (degree) = Image shift
amount (Adjustment scale) x10
amount (Adjustment scale) x10
Repeat procedures 10) - 11) until a satisfactory result is obtained.
ADJ 4
Print image position, image
magnification ratio, void area,
off-center adjustment (Print
engine) (Manual adjustment)
magnification ratio, void area,
off-center adjustment (Print
engine) (Manual adjustment)
Normally if the adjustment is executed by ADJ 4 (automatic adjust-
ment), there is no need to execute this adjustment.
ment), there is no need to execute this adjustment.
Only when the manual adjustment is required, execute this adjust-
ment.
ment.
In other words, this manual adjustment is executed when a satis-
factory result is not obtained from the automatic adjustment (ADJ
4).
factory result is not obtained from the automatic adjustment (ADJ
4).
4-A
Print image magnification ratio adjustment
(main scanning direction) (Print engine)
(Manual adjustment)
(main scanning direction) (Print engine)
(Manual adjustment)
This adjustment must be performed in the following cases:
* When the LSU (writing) unit is replaced.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
1)
Enter the SIM 50-10 mode.
2)
Set A4 (11" x 8.5") paper in the paper feed tray.
3)
Select the paper feed tray set in procedure 2) with the scroll
key.
key.
4)
Press [EXECUTE] key.
The check pattern is printed out.
5)
Check that the inside dimension of the printed halftone is 240
+/- 0.5mm.
+/- 0.5mm.
If the above requirement is not met, do the following steps.
6)
Change the set value of set item A.
C
M
Y
B
A
EXECUTE
End of print
EXECUTE
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MM
MX-C301 ADJUSTMENTS 5 – 13
When the set value is changed by 1, the dimension is changed
by 0.1mm.
by 0.1mm.
When the set value is increased, the BK image magnification
ratio in the main scanning direction is increased. When the set
value is decreased, the BK image magnification ratio in the
main scanning direction is decreased.
ratio in the main scanning direction is increased. When the set
value is decreased, the BK image magnification ratio in the
main scanning direction is decreased.
Repeat procedures 2) - 6) until a satisfactory result is obtained.
4-B
Print image print area adjustment
(Print engine) (Manual adjustment)
(Print engine) (Manual adjustment)
This adjustment must be performed in the following cases:
* When the LSU is replaced or removed.
* When a paper tray is replaced.
* When the paper tray section is disassembled.
* When the manual feed tray is replaced.
* When the manual feed tray is disassembled.
* When the duplex mode paper transport section is disassembled.
* When the registration roller section is disassembled.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
Before execution of this adjustment, be sure to execute the print
image magnification ratio adjustment (ADJ 4A) (main scanning
direction) (print engine) (manual adjustment).
image magnification ratio adjustment (ADJ 4A) (main scanning
direction) (print engine) (manual adjustment).
1)
Enter the SIM 50-10 mode.
2)
Set A4 (11 x 8.5") paper to all the paper feed trays. Select an
adjustment item of the target paper feed tray among items B -
N and enter the adjustment value. Then select item "O" to
select the paper feed tray which is to be used for executing
test printing.
adjustment item of the target paper feed tray among items B -
N and enter the adjustment value. Then select item "O" to
select the paper feed tray which is to be used for executing
test printing.
3)
Press [EXECUTE] key.
The adjustment pattern is printed.
4)
Check the adjustment pattern to confirm that the items below
are in the range of the standard values.
are in the range of the standard values.
If the above condition is not satisfied, or if it is set to a desired
condition, execute the simulation 50-10.
condition, execute the simulation 50-10.
Feed paper from all the paper feed trays to confirm.
5)
Enter the SIM 50-10 mode.
6)
Select an adjustment item with the scroll key, enter the adjust-
ment value, and press [OK] key.
ment value, and press [OK] key.
EXECUTE
End of print
EXECUTE
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Content
Standard adjustment value
X
Lead edge void area
4.5 - 5.0 mm
Y
Rear edge void area
2.0 - 3.5 mm
Z1/Z2
FRONT/REAR void area
Total less than 8mm
Item/Display
Content
Setting
range
Default
value
A
BK-MAG
Main scan print
magnification ratio BK
magnification ratio BK
60 - 140
100
B
MAIN-MFT
Print off center adjustment
value (Manual paper feed)
value (Manual paper feed)
1 - 99
50
C
MAIN-CS1
Print off center adjustment
value (Tray 1)
value (Tray 1)
1 - 99
55
D
MAIN-CS2
Print off center adjustment
value (Tray 2)
value (Tray 2)
1 - 99
55
::
4OTAL
4OTAL
8
9
::
4OTAL
4OTAL
EXECUTE
End of print
EXECUTE
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MX-C301 ADJUSTMENTS 5 – 14
When the adjustment value of "MAIN-**" is increased, the
printing position is moved to the rear direction. When the
adjustment value of "SUB-**" is increased, the printing position
is moved to the rear direction of the paper transportation.
printing position is moved to the rear direction. When the
adjustment value of "SUB-**" is increased, the printing position
is moved to the rear direction of the paper transportation.
When the adjustment values of the DENA, the DENB and the
Front/Rear of SIM50-01 are increased, the void area is
increased. When the adjustment values of the DENA, the
DENB and the Front/Rear of SIM50-01 are decreased, the
void area is decreased.
Front/Rear of SIM50-01 are increased, the void area is
increased. When the adjustment values of the DENA, the
DENB and the Front/Rear of SIM50-01 are decreased, the
void area is decreased.
When the adjustment value is changed by 1, the void area is
changed by 0.1mm.
changed by 0.1mm.
The adjustment value and the actual void area are related as
follows:
follows:
Adjustment value/10 = Actual void area
When the amount of the rear edge void is different between
each paper feed tray, change the adjustment value of item
(DENB-XXX) in SIM50-1 and adjust.
each paper feed tray, change the adjustment value of item
(DENB-XXX) in SIM50-1 and adjust.
The adjustment item (DENB) have a effect on the paper of all
paper feed tray.
paper feed tray.
That is, adjustment value of item (DENB-XXX) fine adjusts to
adjustment item (DENB) for each paper tray.
adjustment item (DENB) for each paper tray.
After execution of the above, perform procedures 1) - 4) to
check that the void area is within the specified range.
check that the void area is within the specified range.
Though the lead edge void area adjustment value is proper, if
the lead edge void area is not within the specified range,
change the adjustment value of item (RRCB-XXX) in SIM 50-1.
the lead edge void area is not within the specified range,
change the adjustment value of item (RRCB-XXX) in SIM 50-1.
Repeat the above procedures until a satisfactory result is obtained.
4-C
Print image off-center adjustment
(Print engine) (Manual adjustment)
(Print engine) (Manual adjustment)
This adjustment must be performed in the following cases:
* When the LSU is replaced or removed.
* When a paper tray is replaced.
* When the paper tray section is disassembled.
* When ADJ 4A Print engine image magnification ratio adjustment
(Main scanning direction) is performed.
* When the manual feed tray is replaced.
* When the manual feed tray is disassembled.
* When the duplex mode paper transport section is disassembled.
* When the registration roller section is disassembled.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.
Before execution of this adjustment, check to insure the following
item.
item.
* The print image magnification ration adjustment (ADJ 4A) (main
scanning direction) (Print engine) (Manual adjustment) has been
properly adjusted.
properly adjusted.
1)
Enter SIM 50-10 mode.
2)
Select the target paper feed tray (MAIN-XX) with the scroll key.
3)
Set A4 (11" x 8.5") paper in the paper feed tray selected in pro-
cedure 2).
cedure 2).
4)
Press [EXECUTE] key.
The adjustment pattern is printed.
5)
Check that the adjustment pattern image is printed in the cor-
rect position.
rect position.
Measure the dimension of the void area in the front and the
rear frame direction of the adjustment pattern, and check that
all the following conditions are satisfied.
rear frame direction of the adjustment pattern, and check that
all the following conditions are satisfied.
E
MAIN-ADU
Print off center adjustment
value (Duplex)
value (Duplex)
If the adjustment items A -
G are not properly adjusted,
this adjustment cannot be
executed properly.
G are not properly adjusted,
this adjustment cannot be
executed properly.
1 - 99
50
F
SUB-MFT
Registration
motor ON
timing
adjustment
motor ON
timing
adjustment
Manual
paper
feed
paper
feed
1 - 99
25
G
SUB-CS1
Standard
cassette
cassette
1 - 99
25
H
SUB-DSK
DESK
1 - 99
25
I
SUB-ADU
ADU
1 - 99
25
J
MULTI COUNT
Number of print
1 - 999
1
K
PAPER
MFT
Tray selection
Manual
paper
feed
paper
feed
1 - 3
1
2 (CS1)
CS1
Tray 1
2
CS2
Tray 2
3
L
DUPLEX
YES
Duplex print
selection
selection
Yes
0 - 1
0
1 (NO)
NO
No
1
Item/Display
Content
Setting
range
Default
value
Display/Item
Content
Setting range
NO
Not select
1
EXECUTE
End of print
EXECUTE
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