Sharp AR-M351N, Service Manual

Page: 128 / 276

AR-M351U/M451U, AR-M355U/M455U ADJUSTMENTS 8 - 9
<6> OC scan lead edge adjustment
Items which must have been completed before this adjust-
ment.
• Adjustment on the engine side (If there is no problem in self
print, no need to adjust.)
• OC scan distortion adjustment
• SPF scan distortion adjustment
• OC scan magnification ratio adjustment
Items which must be executed after completion of this adjust-
ment.
• SPF scan lead edge adjustment
• Original off-center adjustment
1) Set an original on the original table.
2) Enter SIM 50-1.
3) Make a copy.
4) Select the number to be set on the right of the LCD, and per-
form the adjustment of each item.
5) Select "4: RRC-B" so that the distance between the paper lead
edge and the copy image lead edge is within 4.0mm. Change
the value with 10-key and perform the copy adjustment.
6) Select "5: DEN-B" so that the white spot in the latter half of
copy (rear edge void) is within 4.0mm. Change the value with
10-key and perform the copy adjustment.
(The rear void adjustment is changed by the step of 0.1mm.)
• When the rear edge void is too small, increase the value.
• When the rear edge void is too great, decrease the value.
7) Select "3: RRC-A," change the value with 10-key, and adjust
the document scan start position.
8) Press [CA] key to cancel the simulation.
<Specification>
<7> SPF scan lead edge adjustment
Items which must have been completed before this adjust-
ment.
• Adjustment on the engine side (If there is no problem in self
print, no need to adjust.)
• SPF scan distortion adjustment
• SPF scan lead edge adjustment
• SPF magnification ratio adjustment
Items which must be executed after completion of this adjust-
ment.
• SPF/DSPF off-center adjustment
1) Make a copy of a chart which indicates the image loss amount
of each side with SPF/DSPF.
2) Execute SIM50-6 and change the values.
<Set values 1>
Item Content Specification
Set
range
Default
(Lead edge adjustment value)
3 RRCA Document scan
start position 4.0mm or
less 0 - 99 50 Set value
1: 0.1mm
shift
4 RRCB Resist roller
clutch ON timing
adjustment value 4.0mm or
less
10 SIDE2 ADJ. Correction value
for RRCB when
refereeing from
ADU 1 - 99 50
(Image loss set value)
5 LEAD Lead edge image
loss set value 0 - 99 15 Set value
1: 0.1mm
shift
6 SIDE Side image loss
set value 20
(Void set value)
7 LEAD_EDGE
(DENA)
Lead edge void
set value Total 8mm
or less 0 - 99 35 Set value
1: 0.1mm
shift
8 TRAIL_EDGE
(DENB)
Rear edge void
adjustment value Total 8mm
or less
9 FRONT/
REAR
Front/Rear void
adjustment value Total 8mm
or less
32
2
SIMULATION 50-1
LEAD EDGE ADJUSTMENT. SELECT 0-9, AND PRESS START.
0.TRAY SELECT 1 1.COPY START
2.MAGNIFICATION 100
(ADJUSTMENT DATA) 3.RRCA 50 4.RRCB 50 10.SIDE2 ADJ. 50
(IMAGE LOSS SETTING) 5.LEAD 15 6.SIDE 20
(VOID SETTING) 7.LEAD_EDGE(DENA) 35
8.TRAIL_EDGE(DENB) 35 9.FRONT/REAR 32
Item
Set
range
Default
0 TRAY SELECT Paper feed tray
selection 1 - 6 –
1 COPY START Copy START (Default) – –
2 MAGNIFICATION Print magnification ratio 25 -
200%
–
(Lead edge adjustment value)
3 SIDE1 Front surface document
scan start position
adjustment value 0 - 99 50
4 SIDE2 Back surface document
scan start position
adjustment value
(Image loss set value: SIDE 1)
5 LEAD_EDGE Front surface lead edge
image loss set value 0 - 99 15
6 FRONT_REAR Front surface side edge
image loss set value 20
7 TRAIL_EDGE Front surface rear edge
image loss set value 0 - 20 0
(Image loss set value: SIDE 2)
8 LEAD_EDGE Back surface lead edge
image loss set value 0 - 99 15
9 FRONT/REAR Back surface side edge
image loss set value 20
10 TRAIL_EDGE Back surface rear edge
image loss set value 0 - 20 0
*: For output, select the right side tray.
<Document>
Document set reference
Output result
Rear edge void Lead edge void
Adjust
with
RRCB.
Adjust
with
RRCA.
Image loss
(SIDE)
FR void
Image loss
(LEAD)
Paper transport direction
2
SIMULATION 50-6
LEAD EDGE ADJUSTMENT(SPF). SELECT 0-10, AND PRESS
START.
0.TRAY SELECT 1 1.COPY START
2.MAGNIFICATION 100
(ADJUSTMENT DATA)3.SIDE1 50 4.SIDE2 50
(IMAGE LOSS SETTING)
SIDE1: 5.LEAD_EDGE 15 6.FRONT/REAR 20 7.TRAIL_EDGE 0
SIDE2: 8.LEAD_EDGE 15 9.FRONT/REAR 20 10.TRAIL_EDGE 0