Sharp SF-1014 Service Manual page 72

11) Measure the distance from the paper lead edge to the copy
image lead edge of each copied papers (129% and 64%),
and calculate the average value.
(Not required for the models without zoom functions.)
12) Check that the void area is within the specified range.
Void area
mm
1 0
1/2mm
Black background edge
Paper lead edge
Standard:
+3
0 mm
–0
If the void area is outside the specified range, change the
set value of simulations 45 and repeat procedures 9) to
12).
When the set value is changed by "1," the void area is
changed by about 0.123 mm.
When the set value is made greater, the void area be-
comes greater, and vise versa.
(End edge void area adjustment) Tray paper feed mode
1) Set a scale and A4 or 8 1/2" x 11" paper on the document
table as shown below:
Scale
2) Execute simulations 45. (C → 0 → 0 → C → 45 → CB → 1
→ CB)
The set adjustment value is displayed on the COPIES
SELECTED display.
Press the paper feed unit select button to blink the cassette
paper feed lamp and to set the machine to the end edge
void adjustment mode in the cassette paper feed mode.
3) Set the adjustment value to "99."
Enter "99" with the numeric key, and press PRINT button.
4) With the document cover open, make several copies at
100%.
Copy scale image
20 30
B4 or "14 x 8½" paper
5) Measure the end edge void area of each copy.
mm
1/2mm
6) Calculate the average void area.
7) Calculate the void area adjustment value from the formula
shown below.
Current set value (99) –
= Adjustment value (Decimal point rounded)
8) Set the adjustment value obtained in procedure 7).
(Decimal point rounded off)
9) With the document cover open, make several copies at
100%.
10) Measure the copy end edge void area.
11) Measure the distance from the paper end edge to the copy
image lead edge of each copied papers (129% and 64%),
and calculate the average value.
12) Check that the void area is within the specified range.
mm
1/2mm
Standard:
1 ∼ 3 mm
If the void area is outside the specified range, change the
set value of simulations 45 and repeat procedures 9) to
12).
When the set value is changed by "1," the void area is
changed by about 0.123 mm.
When the set value is made greater, the void area be-
comes greater, and vise versa.
(End edge void area adjustment) Manual paper feed tray mode
1) Press the paper feed unit select button to blink the manual
paper feed lamp and to set the machine to the rear edge
void adjustment mode in the manual paper feed mode.
2) Perform the end edge void adjustment in the manual paper
feed mode similarly with the end edge void adjustment in
the tray paper feed mode.
7 – 22
Void area
10 20 30
Black background edge
Paper end edge
current void area (mm)
0.123
Void area
10 20 30
Black background edge
Paper end edge