Adj 6] Copy Image Distortion Adjustment - Sharp AR-BC260 Service Manual

ADJ 6 Copy image distortion
adjustment
This adjustment must be performed in the following cases:
• When the scanner (reading) section is disassembled.
• When a copy image distortion occurs.
ADJ 6A Scanner (reading) unit parallelism
adjustment
1) Loosen the screw that is fixing the scanner unit A and the drive
wire, and remove the scanner unit A from the drive wire.
2) Manually turn the scanner drive pulley to bring the scanner
unit B into contact with the stopper.
At that time, if the scanner unit B makes contact with the two
stoppers on the front and the rear frame simultaneously, the
parallelism of the scanner unit B is proper.
If not, perform the following procedures.
3) Loosen the pulley angle fixing screw on the front frame side of
4) Adjust the pulley angle position on the scanner unit B front
5) Fix the pulley angle on the scanner unit B front frame side.
AR-BC260 SETTING AND ADJUSTMENTS 8 - 15
the scanner unit B.
frame side so that both stoppers on the front frame and the
rear frame are in contact with the scanner unit B at the same
time.
If the above procedure does not result in a satisfactory result,
perform the following procedure.
Loosen the fixing screw of the scanner unit drive pulley that is
not in contact.
Without moving the scanner unit drive shaft, manually turn the
scanner unit drive pulley so that the scanner unit B is brought
into contact with the stopper on the front frame side and the
stopper on the rear frame side at the same time. (Change the
relative positions of the scanner unit drive pulley and the drive
shaft.)
Fix the scanner unit drive pulley fixing screw.
Scanner unit B
Winding pulley