Sharp AR-280 Service Manual page 36

AR-405
B. Laser scanner section
(1) Horizontal image distortion adjustment
1) Execute SIM 64-1, and print the pattern of SQUARE from the
manual feed tray.
(A: 22 E: 1)
Set items A: Self print pattern
B: Density level
C: Setting of the number of self print sheets
D: Density mode
1 Auto
2 Text
E: Cassette selection
1 Manual feed
2 Upper cassette
3 Lower cassette
4 Desk upper cassette
F: Duplex print selection
1 Simplex
2) Obtain value a of the printed sheet.
a
θ
Paper exit direction
1/21/1999
3 Text/Photo
4 Photo
5 Desk middle cassette
6 Desk lower cassette
7 LCC
2 Duplex
3) Turn the adjustment handle to adjust according to the value a.
AR-2XX/3XX series
Adjustment handle:
θ
<90 degress:
θ
>90 degrees:
Adjustment specification:
(2) Print off-center adjustment
1) Execute SIM 64-1. print one sheet from each paper feed port.
Measure the void amount both sides.
* Select the self print pattern which allows easy measurement of
the void amount.
2) Execute SIM 50-10.
7 – 6
AR-405
1 scale = 0.5mm (dimension a)
Right direction
Left direction
a = 0 mm, θ = 90 degrees