Sharp MX-4100N Service Manual page 63

A
A
A: Rough adjustment pattern
B: Fine adjustment pattern
C: Adjustment range (0 ±1)
4) Check the rough adjustment and the fine adjustment print pat-
tern positions of each color in the front frame and the rear
frame sides.
Use the visually highest color density section as the center,
and measure the shift amount.
The front frame registration and the rear frame registration are
adjusted independently.
To check the image registration, therefore, check the front
frame side and the rear frame side individually.
Rough adjustment print Check that the rough adjustment print pattern
pattern check is at the center for the rough adjustment
reference pattern.
Fine adjustment print Check that the fine adjustment print pattern is
pattern check at the center for the fine adjustment reference
pattern.
(If the fine adjustment print pattern is located in the range of 0
±1 from the fine adjustment reference pattern scale, the adjust-
ment is not required.)
If the above condition is not satisfied, select the color mode
adjustment item A - F to be adjusted with the scroll key and
change the adjustment value to adjust.
Display/Item Content
A CYAN Image registration
(FRONT) adjustment value
(Main scanning direction)
(Cyan) (F side)
B CYAN Image registration
(REAR) adjustment value
(Main scanning direction)
(Cyan) (R side)
A
C
C
A
Adjustment
Default
value range
1 - 199 100
1 - 199 100
MX-5001N ADJUSTMENTS 5 – 21
A
C
C
A
Display/Item
C MAGENTA Image registration
(FRONT) adjustment value
(Main scanning direction)
(Magenta) (F side)
D MAGENTA Image registration
(REAR) adjustment value
(Main scanning direction)
(Magenta) (R side)
E YELLOW Image registration
(FRONT) adjustment value
(Main scanning direction)
(Yellow) (F side)
F YELLOW Image registration
(REAR) adjustment value
(Main scanning direction)
(Yellow) (R side)
Repeat procedures 3) - 4) until a satisfactory result is obtained.
For measurement of the shift amount and the calculation of the
adjustment value, refer to the following.
(Measurement of the shift amount and the calculation of
the adjustment value)
a) Measurement of the shift amount
* Measurement of the fine adjustment pattern
Use the visually highest color density section as the
center, and measure the shift amount.
(Example)
The measurement value of the figure is "14".
B
C
C
B
Adjustment
Content
value range
1 - 199
1 - 199
1 - 199
1 - 199
Default
100
100
100
100