Sharp AR-C150, Service Manual

Page: 60 / 214

9) Pull out the transfer unit, and remove the adjustment sheet.
(The adjustment sheet is positioned in front of the cleaning blade
at the back of the unit as the transfer belt rotates.)
10) Return the transfer unit.
NOTE: If the motor drive power is turned on immediately after at-
taching the adjustment sheet to the transfer belt, the adjust-
ment sheet does not stop at the specified position and the
transfer belt keeps rotating.
As a result, the adjustment sheet may be damaged by the
transfer cleaning blade or the transfer cleaning blade may be
damaged by the adjustment sheet.
To prevent against this, be sure to observe the following.
1) Before entering the SIM 44-13 mode, open the right
cover of the machine to open the motor drive power line.
2) After completion of the adjustment, remove the adjust-
ment sheet from the transfer belt.
ADJ 2 Image density sensor sensing position
adjustment
This adjustment must be performed in the following cases:
•
When the image density sensor is replaced.
•
When the image density sensor section is replaced.
•
When a U2 trouble occurs.
•
When the PCU main PWB is replaced.
•
When the EEPROM of the PCU main PWB is replaced.
1) Enter the SIM 44-23 mode.
2) Press the [EXECUTE] key. The adjustment is automatically per-
formed, and the average data is displayed.
When the operation is completed, the [EXECUTE] key is high-
lighted.
In case of an abnormal end, "ERROR" is displayed.
•
When the ICU main PWB is replaced.
•
When the EEPROM of the ICU main PWB is replaced.
ADJ M7
Image skew adjustment (Scanner
(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 a color image mis-resist occurs.
•
When the installing location is changed.
1) Enter the SIM 64-1 mode.
Select the color mode of Black.
2) Set the values of A – D of the set item as shown in the table be-
low, and make an A3 (11"
×
17") copy. (The grid pattern is
printed.)
∗
Use the paper tray at the bottom.
SIM 64-1 set items
Parameter Set value
A PRINT PATTERN 5
B PRINT START GRADATION LEVEL 1
C SELF PRINT Q’TY SETTING 1
D DENSITY MODE 9
Enter the input value with the 10-key and press the OK key. When
the [EXECUTE] key is pressed, printing is performed. Paper is se-
lected by the set item E.
3) Check the distortion of the printed image.
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.
4) If the image is distorted, loosen the red screw for the holder on the
chassis side, and adjust the LSU inclination with the black LSU
adjustment screw (set screw). (The LSU at the right end is black.)
After completion of the adjustment, fix the holder with the red
screw.
0.5mm or less
Longitudinal direction
Reference line
Right-angle
Comparison line
Red screw for the holder
7 – 6