Sharp AR-M236 Service Manual page 33

5) Press the [START] key.
Copying is started.
Item Content
1 TRAY1 1st cassette
2 OPTION Option cassette
3 MANUAL Manual feed
4 DUPLEX Back print
6) Measure the distance H between the paper lead edge and the
image print start position. Set the image print start position set
value again.
• 1 step of the set value corresponds to about 0.127mm shift.
• Calculate the set value from the formula below.
99 – H/0.127 (mm) = Image print start position set value <H:
Print start position measurement value (mm)>
∗
Fit the print edge with the paper edge, and perform the lead
edge adjustment.
Example:99 – 5/0.127 = 99 – 39.4 = about 59
Note: FIf the set value is not obtained from the above formula, per-
form the fine adjustment.
7) Execute SIM 50-1-2 to adjust the main cassette lead edge void.
• 1 step of the set value corresponds to about 0.127mm shift.
• Calculate the set value from the formula below.
B/0.127 (mm) = Lead edge void adjustment value <B: Lead edge
void (mm)>
Example: When setting the lead edge void to 2.5mm:
2.5 /0.127 = about 20
<Adjustment specification>
Adjustment
SIM Set value
mode
Main cassette 50-1- B/0.127
lead edge void 2
Print start 50-5 99 – H/0.127
position
(2) SPF (RSPF) image lead edge position adjustment
1) Set a scale on the OC table as shown below.
Setting range Default
0-99
1-99
0mm
0mm
5
10
2.5mm
5
2.5mm
10
Setting
Spec value
range
Lead edge void: 1 – 99
1 – 4mm
Image loss: 3mm
or less
AR-M236/M276/M237/M277 ADJUSTMENTS 7 - 3
Note: Since the printed copy is used as a test chart, put the scale in
paralleled with the edge lines.
2) Make a copy, then use the copy output as an original to make an
SPF (RSPF) copy again.
53
3) Check the copy output. If necessary, perform the following adjust-
ment procedures.
4) Execute SIM 50-6.
5) Set the SPF (RSPF) lead edge position set value so that the same
image is obtained as that obtained in the previous OC image lead
edge position adjustment.
<Adjustment specification>
Adjustment
SIM
mode
SPF 50-6
(RSPF)
image lead
edge
position
(3) Rear edge void adjustment
1) Set a scale as shown in the figure below.
2) Set the document size to A4 (8.5" x 11"), and make a copy at
100%.
3) If an adjustment is required, follow the procedures below.
4) Execute SIM 50-1 and set the density mode to DEN-B. The cur-
rently set adjustment value is displayed.
5) Enter the set value and press the start key.
The correction value is stored and a copy is made.
<Adjustment specification>
Adjustment
SIM
mode
Rear edge
50-1-6
void
Set value Spec value
1 step: Lead edge void:
0.127mm 1 – 4mm
shift Image loss: 3mm or less
A4 (8.5" x 11")
Paper rear edge
Void amount (Standard value: 4mm or less)
Scale image
Paper rear edge
Spec
Set value
value
1 step: 0.127mm 4mm or
shift less
Setting
range
1 – 99
Setting
range
1 – 99