Sharp AR-6020V Service Manual page 34

<Adjustment specification>
Adjustment mode SIM
Paper off center SIM 50-
10
2nd print surface SIM 50-
off-center 10
2-A (5)Side edge void area adjustment
NOTE: This adjustment executes the left and right void amount
adjustment.
<How to operate>
When the adjustment value is entered by the [Numeric] keys and
press the [START] key, the setting value is saved and the machine
goes into the sub code input standby mode.
Switching can be made with [AUTO/TEXT/PHOTO] key, and the
set value of the selected mode is displayed on the number of cop-
ies display.
When the adjustment value is increased by 1, the void amount is
increased by 0.5mm. The adjustment range is from 0 to 10.
LED
AUTO indicator Right side void
TEXT indicator Left side void
1) Set a test chart (UKOG-0089CSZZ) on the document table.
2) Select a paper feed port and make two copies. Compare the
2nd copy and the test chart. If necessary, perform the following
adjustment procedure.
*The 1st copy does not show the void. Be sure to check the
2nd copy.
3) Execute SIM 26-43 and set the density mode to AUTO(right
edge void) + TEXT (Left edge void). The currently set adjust-
ment value is displayed.
4) Enter the set value and press the [START] key. The correction
value is stored.
<Adjustment specification>
Adjustment
SIM LED
mode
AUTO
(right edge)
SIM
Left edge void +
26-43
TEXT
(left edge)
2-B Main scanning direction(FR direction)
distortion balance adjustment
Before execution of this adjustment, remove the document table
glass.
1) Remove the lamp unit, and then loosen the screws which are
fixing the scanner unit A and the drive wire. Release the scan-
ner unit A from the drive wire.
Set Spec
LED
value value
AUTO Add 1: Single:
+ 0.1mm Center
Selecte shift to R +/-
d tray side. 2.0mm
ON
Reduce
TEXT Duplex:
1: 0.1mm
+ Center
shift to L
1st tray +/-
side.
2.5mm
Adjustment mode
Set Spec Set
value value range
1 step:
0.5mm 0 - 10mm 0 - 10
shift
AR-6020V ADJUSTMENTS 5 – 5
2) Manually turn the mirror base drive pulley and bring No. 2/3
mirror base unit into contact with the positioning plate. At that
Set
time, if the front frame side and the rear frame side of No. 2/3
range
mirror base unit are brought into contact with the positioning
1 - 99
plate at the same time, the mirror base unit parallelism is
proper. If one of them is in contact with the positioning plate,
perform the adjustment of next step.
3) Loosen the set screw of the scanner drive pulley which is not
in contact with No. 2/3 mirror base unit positioning plate.
4) Loosen the fixing screw of the pulley angle on the front frame
side of the scanner unit B.
5) Adjust the position of the pulley angle on the front frame side
of the scanner unit B so that it is in contact with two stoppers
on the front and the rear frames simultaneously.
6) Fix the pulley angle on the front frame side of the scanner unit
B.
If a satisfactory result is not obtained from the above proce-
dures, perform the following procedures.
Loosen the fixing screw of the scanner unit drive pulley which
is not in contact.
Without moving the scanner unit drive shaft, turn the scanner
unit drive pulley manually and adjust so that the scanner unit B
is in contact with both stoppers on the front frame and the rear
frame simultaneously. (Change the relative position of the
scanner unit drive pulley and the drive shaft.) Fix the scanner
unit drive pulley fixing screw.