Scan Image Distortion Adjustment; Scanner (Reading) Unit Parallelism Adjustment - Sharp MX-1810U Service Manual

(Reference adjustment value)
1 scale/1 (When the set value is changed by 1, shift is made by 1
scale.)
If there is a considerable difference in color shift in the square and
at the center area, perform the adjustment.
Select an adjustment item (OFF SET X F / OFF SET X R / OFF
SET X S), and change the adjustment value to adjust.
OFF SET X F: F side main scanning direction registration offset set
value (The color shift on the F side and at the center area is
changed.)
OFF SET X D: R side main scanning direction registration offset set
value (The color shift on the R side and at the center area is
changed.)
OFF SET X S: Sub scanning direction registration offset set value
(Color is shifted to the sub scanning direction overall.)
When the adjustment value of OFF SET X F and OFF SET X R are
changed, the color at the center area will be affected. Consider this
when executing the adjustment.
(Adjustment conditions and method)
To adjust evenly overall, adjust so that the color shifts on the F side,
the R aide and at the center are of the same level.
To adjust with the center area most focused, adjust so that the color
shift at the center becomes smaller than that on the F side and the
R side.
When the offset adjustment value is 0, if the color registration
adjustment (automatic adjustment) is performed, the color shift on
the F side and that on the R side are automatically adjusted to be
smaller than that on the center area.
Display/Item Content
A CYAN Image registration adjustment
(FRONT) value (Main scanning
direction) (Cyan) (F side)
B CYAN Image registration adjustment
(REAR) value (Main scanning
direction) (Cyan) (R side)
C MAGENTA Image registration adjustment
(FRONT) value (Main scanning
direction) (Magenta) (F side)
D MAGENTA Image registration adjustment
(REAR) value (Main scanning
direction) (Magenta) (R side)
E YELLOW Image registration adjustment
(FRONT) value (Main scanning
direction) (Yellow) (F side)
F YELLOW Image registration adjustment
(REAR) value (Main scanning
direction) (Yellow) (R side)
G CYAN Image registration adjustment
(SUB) value (Sub scanning
direction) (Cyan)
H MAGENTA Image registration adjustment
(SUB) value (Sub scanning
direction) (Magenta)
I YELLOW Image registration adjustment
(SUB) value (Sub scanning
direction) (Yellow)
J OFFSET Image registration offset
CF adjustment value (Main
scanning direction) (Cyan)
(F side)
K OFFSET Image registration offset
CR adjustment value (Main
scanning direction) (Cyan)
(R side)
Adjustment Default
value range value
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 21
Display/Item Content
L OFFSET Image registration offset
MF adjustment value (Main
scanning direction) (Magenta)
(F side)
M OFFSET Image registration offset
MR adjustment value (Main
scanning direction) (Magenta)
(R side)
N OFFSET Image registration offset
YF adjustment value (Main
scanning direction) (Yellow)
(F side)
O OFFSET Image registration offset
YR adjustment value (Main
scanning direction) (Yellow)
(R side)
P OFFSET Image registration offset
CS adjustment value (Sub
scanning direction) (Cyan)
Q OFFSET Image registration offset
MS adjustment value (Sub
scanning direction) (Magenta)
R OFFSET Image registration offset
YS adjustment value (Sub
scanning direction) (Yellow)
ADJ 6
Scan image distortion
adjustment
(Document table mode)
This adjustment must be performed in the following cases:
* When the scanner (reading) section is disassembled.
* When the copy image is distorted.
6-A Scanner (reading) unit parallelism
adjustment
Before execution of this adjustment, remove the document table
glass.
1) Remove the lamp unit, and then loosen the screws which are
fixing the scanner unit A and the drive wire. Release the scan-
ner unit A from the drive wire.
Adjustment Default
value range value
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100
1 - 199 100