Sharp AR-BC260 Service Manual page 100

Rear frame side
Execute procedures 4 to 6 for each color.
(2) Print engine image skew adjustment (LED (writing)
unit)
This adjustment must be performed in the following cases:
• When the scanner (writing) unit is replaced.
• When the scanner (writing) unit is removed from the machine.
• When the print image includes skew.
(When the scanner (reading) unit is normal and the print image
of the print engine includes skew.)
• When a color image registration error occurs.
(There is an image registration difference in the main scanning
direction.)
• When there is uneven density in the main scanning direction.
• When the color balance adjustment does not result in proper
color matching.
• When in installation or when the installing site is changed. (Nec-
essary depending on the case)
1) Enter the SIM 64-1 mode.
SIM 64-1
2) Set the items A and B according to the table below.
Parameter
A PRINT PATTERN
B DENSITY
3) Select the A3 (11 x 17) size paper feed tray.
4) Select Black (K) and press the [EXECUTE] key.
The grid patter (one page) is printed.
5) Check the printed grid pattern. (Check for image skew (distor-
tion).)
If the right-angle level of the traverse print line is 0.5mm or
less for the longitudinal print line of paper, there is no need to
adjust.
6) If the above conditions are not satisfied, remove the develop-
Set value
1
7) Enter the SIM 61-4 mode.
1
8) Select the A4 (11 x 8.5) size paper feed tray.
9) Press the [EXECUTE] key.
AR-BC260 SETTING AND ADJUSTMENTS 8 - 7
A B
0.5mm or less
Comparison line
Longitudinal direction
Reference line
Right-angle
ing unit and turn the print engine image skew adjustment
screw to adjust.
At that time, use SIM 7-1 to set DV CHECK DISABLE to
Enable and to disable the developing unit installation detec-
tion.
If skew is made in the arrow direction A, turn the adjustment
screw clockwise. If skew is made in the arrow direction B, turn
the adjustment screw counterclockwise.
SIM 61-4
The print engine image skew adjustment pattern is printed.
(One page)