Automatic Developer Adjustment; Adjustment Of Distortion - Sharp AR-M450 Service Manual

If another peripheral device must be installed, carry out the following
step at the end of the installation work.

6. Automatic developer adjustment

1) Attach the cabinets which were removed.
2) Close the left door.
At that time, keep the front door open.
Note: The automatic developer adjustment must be performed by
entering the simulation mode with the front door open. If the power
is turned off with the front door closed, warm-up is performed to
supply toner to the developing unit. As a result, the reference toner
density cannot be obtained.
3) Insert the power plug into the power outlet.
4) Switch to the copy mode, and press
[P] [*] [C] [*] [2] [5]
the machine will enter the simulation mode "AUTOMATIC DV AD".
5) Close the front door.
(LCD Display)
SIMULATION 25-2
AUTOMATIC DV ADJUSTMENT. PRESS START.
Press [START] key.
SIMULATION 25-2
AUTOMATIC DV ADJUSTMENT. EXECUTING...
6) Press the [START] key, and the automatic developer adjustment will
be performed.
During execution of the automatic developer adjustment, the data
(LED) blinks and the LCD indicates the toner sensor value.
7) After about 2 min, the adjustment value is stored in the machine.
Check that the mode was normally completed.
Normal end: The data LED goes off.
Abnormal end: The error LED lights up.
Remove the cause of the error, and execute the automatic developer
adjustment again.
8) Turn off/on the power, and the machine returns to the normal mode
and enters the warm-up mode.
[START] [2] [START], and
128
Press [CUSTOM SETTING] key to stop.
Or stop after 2min.
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AR-M350 UNPACKING AND INSTALLATION 6-8

7. Adjustment of distortion

Since adjustment was made at the shipment, any additional adjustment
is not needed basically. If distortion occurs as shown in the illustration,
however, perform the adjustment by following the procedure below.
1) Use a level meter to check that the scanner unit is installed on a
horizontal surface.
Make a copy. If distortion occurs as shown in Fig.1 or Fig. 2, loosen
the cam A securing screw (M3 x 12) to perform the adjustment.
[Fig. 1]
First copy image
Image
Copy paper
Difference
• In case of Fig. 1
Move cam A in the direction of A by the difference of the image.
As a guide for the amount of movement, the image moves 0.5 mm by
one division (one groove) of cam movement.
After the movement, tighten the cam A securing screw (M3 x 12) and
make a copy again to check that the copy image is not distorted.
[Fig. 2]
First copy image
Image
Copy paper
Difference
• In case of Fig. 2
Move cam A in the direction of B by the difference of the image.
As a guide for the amount of movement, the image moves 0.5 mm by
one division (one groove) of cam movement.
After the movement, tighten the cam A securing screw (M3 x 12) and
make a copy again to check that the copy image is not distorted.
A
B