Sharp AR-5618 Service Manual page 30

：'11/Jul/22
1
b. SPF original off-center adjustment (SIM50-12)
Note: Before performing this adjustment, be sure to check that the paper
off center is properly adjusted.
1) Make a test chart for the center position adjustment and set it on the
SPF.
<Adjustment specification>
Draw a line on a paper in the scanning direction.
2) Make a normal copy from the bypass tray, and compare the copy
and the original test chart.
If necessary, perform the following adjustment procedures.
3) Execute SIM 50-12.
4) After warm-up, shading is performed and the current set value of the
off center adjustment at each paper feed port is displayed on the
display section in 2 digits.
5) Enter the set value and press the [START] key.
The set value is stored and a copy is made.
<Adjustment specification>
Mode Specification
Original off Single:
center Center ±3.0mm
mode (TEXT indicator)
(SPF mode) Duplex:
Center ±3.5mm
(PHOTO indicator)
1
C.Image density adjustment
(1)Copy mode (SIM 46-2)
1) Set a test chart (UKOG-0162FCZZ) on the OC table as shown below.
2) Put several sheets of A3 or 11" x 17" white paper on the test chart.
3) Execute SIM 46-2.
4) After warm-up, shading is performed and the current set value of the
density level is displayed on the display section in 2 digits.
For mode selection, use the AUTO/TEXT/PHOTO key.
5) Change the set value with the Numeric keys to adjust the copy
image density.
6) Make a copy and check that the specification below is satisfied.
<Adjustment specification>
Density LED Exposure
mode level
Auto Auto -
Text Text 3
Photo Photo 3
(Error
diffusion)
Toner Auto/ -
save Photo
Toner Text/ 3
save Photo
Photo Auto/ 3
(Dither) Text/
Photo
SIM Set value
SIM Add 1:
50-12 0.1mm shift
to R side
Reduce 1:
0.1mm shift
to L side
Sharp Gray Set value
Chart output
"2" is slightly The greater the
copied. set value is the
greater the
"3" is slightly
density is The
copied.
smaller the set
"2" is slightly
value is the
copied.
smaller the
density is.
"2" is slightly
copied
"3" is slightly
copied
"2" is slightly
copied
AR-5618S ADJUSTMENT 6-9
Set
range
1 ~ 99
Set
range
1 ~ 99