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Model
MX-5500N MX-6200N MX-7000N (serv.man45)
Pages
76
Size
6.43 MB
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PDF
Document
Service Manual
Brand
Device
Copying Equipment / Adjustments
File
mx-5500n-mx-6200n-mx-7000n-sm45.pdf
Date

Sharp MX-5500N / MX-6200N / MX-7000N (serv.man45) Service Manual ▷ View online

MX-7000N  ADJUSTMENTS  6 – 36
1)
Place a scale on the document table as shown in the figure
below.
Place a scale so that it is in parallel with the scanning direction
and that its lead edge is in contact with the document guide
plate.
Place white paper on the document table so that the scale lead
edge can be seen.
2)
Enter the simulation 50-1 mode.
3)
Set RRCA, LEAD, and SIDE to the default values.
4)
Perform the image lead edge reference position adjustment.
Press [CLOSE] key, and shift from the simulation mode to the
copy mode and make a copy in 100% mode and in 200%
mode.
When the adjustment value of RRCA is proper, the lead edge
image from 3.0mm is not copied in either of 100% and 200%
copy scale.
If not, change and adjust the RRCA value.
(Adjust so that the lead edge image from 3.0mm is not copied
in either of different copy magnification ratios.)
Repeat the above procedures until a satisfactory result is
obtained.
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
A : 50
;
RRCA
B : 50
;
RRCB-CS12
C : 50
;
RRCB-CS34
D : 50
;
RRCB-LCC
A:
SIMULATION NO.50-01
LEAD EDGE ADJUSTMENT VALUE
XX
0
99
OK
TEST
CLOSE
E : 50
;
RRCB-MFT
F : 50
;
RRCB-ADU
G : 30
;
LEAD
H : 20
;
SIDE
I : 30
;
DENA
J : 20
;
DENB
K : 20
;
FRONT/REAR
A : 60
;
RRCA
B : 50
;
RRCB-CS12
C : 50
;
RRCB-CS34
D : 50
;
RRCB-LCC
A:
SIMULATION NO.50-01
LEAD EDGE ADJUSTMENT VALUE
XX
0
99
OK
TEST
CLOSE
E : 50
;
RRCB-MFT
F : 50
;
RRCB-ADU
G : 30
;
LEAD
H : 20
;
SIDE
I : 30
;
DENA
J : 20
;
DENB
K : 20
;
FRONT/REAR
OK
10-key
Item
Display item
Content
Adjustment range
Default value
A
RRCA
Image lead edge position 
adjustment value
Document lead edge reference position (OC)
0 – 99
50
B
RRCB-CS12
Resist motor ON timing 
adjustment
Standard cassette 
1 – 99
50
C
RRCB-CS34
1 – 99
50
D
RRCB-LCC
LCC
1 – 99
50
E
RRCB-MFT
Manual feed
1 – 99
50
F
RRCB-ADU
ADU
1 – 99
50
G
LEAD
Image loss adjustment
Lead edge image loss adjustment
0 – 99
30
H
SIDE
Side image loss adjustment
0 – 99
20
I
DENA
Void area amount adjustment
Lead edge void area adjustment
1 – 99
30
J
DENB
Rear edge void area adjustment
1 – 99
20
K
FRONT/REAR
FRONT/REAR void area adjustment
1 – 99
20
100%
200%
5mm 10mm
5mm
10mm
Paper lead
edge
Scale image 3.0mm position
MX-7000N  ADJUSTMENTS  6 – 37
5)
Image loss adjustment
When the adjustment item of the image loss below is set to the
default value, it is adjusted to the standard state.
If it is not in the above standard state, or when it is set to a
desired value, change these adjustment items.
Void area: 3.0mm, Image loss: 3.0mm
When the adjustment value is increased, the image loss is
increased. When the adjustment value is decreased, the
image loss is decreased.
When the adjustment value is changed by 1, the image loss is
changed by 0.1mm.
 
20-B
Original scan position adjustment
This adjustment is required in the following cases:
* The MFP control PWB has been replaced.
* The EEPROM on the MFP control PWB has been replaced.
* The scan control PWB has been replaced.
* The EEPROM on the scan control PWB has been replaced.
* The scanner (reading) section has been disassembled.
* The scanner (reading) unit has been replaced.
* When a U2 trouble occurs.
* The DSPF section has been disassembled.
* The DSPF unit has been replaced.
This adjustment is intended to adjust the scanner read position in
DSPF mode front face scan.
An incorrect adjustment would deviate the scanner stop position
from the required position, thus possibly causing a shadow of the
original table to appear at the leading edge of an image generated
by DSPF (front surface) mode scan.
1)
Make a copy in DSPF (front surface) mode, and make sure
that the printed image at the leading edge of the copied image
is free from shadows.
If the printed image at the leading edge of the copied image
contains a shadow of the original table, then do the following
steps.
2)
Enter the simulation 53-8 mode.
3)
Enter the adjustment value and press the [OK] key. 
Repeat the above adjustments until an acceptable result is
obtained.
 
20-C
Copy image position, image loss 
adjustment (DSPF mode)
This adjustment is required in the following cases:
* The MFP control PWB has been replaced.
* The EEPROM on the MFP control PWB has been replaced.
* The scan control PWB has been replaced.
* The EEPROM on the scan control PWB has been replaced.
* The scanner (reading) section has been disassembled.
* The scanner (reading) unit has been replaced.
* When a U2 trouble occurs.
* The DSPF section has been disassembled.
* The DSPF unit has been replaced.
1)
Enter the simulation 50-6 mode.
Display/
Item
Content
Adjustment 
range
Default 
value
Standard 
adjustment 
value
LEAD
Image loss 
adjustment 
value
Lead edge 
image loss 
adjustment 
0 – 99
30
3.0 
± 
1.0mm
SIDE
Side image 
loss 
adjustment
0 – 99
20
2.0 
± 
1.0mm
5mm
10mm
4
3
2
1
Paper lead edge
Copy area
Maginification ratio: 400%
Image area
Papar lead edge
Shadow image of SPF
A:
A : 50
;
ADJUST VALUE
SIMULATION NO.53-08
SPF SCANNING POSITION ADJUSTMENT
XX
1
99
OK
TEST
CLOSE
Image loss (LIL)
LIL = 1.5 mm
LV
= 3.5 mm
TV
= 3.5 mm
FV+RV= 7.0 mm
Papar lead edge
Papar tail edge
10
20
No Image
No Image
No Image
No Image
Void (TV)
Void (LV)
Void (FV)
Void (RV)
A : 50
;
SIDE1
B : 50
;
SIDE2
C : 20
;
LEAD_EDGE (SIDE1)
D : 20
;
FRONT_REAR (SIDE1)
A:
SIMULATION NO.50-06
LEAD EDGE ADJUSTMENT VALUE(SPF)
XX
1
99
OK
TEST
CLOSE
E : 30
;
TRAIL_EDGE (SIDE1)
F : 30
;
LEAD_EDGE (SIDE2)
G : 20
;
FRONT_REAR (SIDE2)
H : 20
;
TRAIL_EDGE (SIDE2)
MX-7000N  ADJUSTMENTS  6 – 38
(Leading edge image loss adjustment)
1)
Set the adjustment values for leading edge image loss (LEAD_
EDGE) for the front and back sides as follows: 
(Standard setting)
C: LEAD_EDGE (SIDE1): 15
F: LEAD_EDGE (SIDE2): 15
* Set the adjustment value for "C: LEAD_EDGE (SIDE1)" and
"F: LEAD_EDGE (SIDE2)" to 15 by entering "15" into the
(LEAD_EDGE) adjustment value field and then pressing the
[OK] key.
2)
In DSPF mode, make a duplex copy at 100% magnification,
and make sure that the leading edge image loss is 1.5 mm for
both the front and back sides. (Select duplex mode from the
paper selection mode as described in Simulation 50-6).
If an acceptable result is not obtained, do the following steps. 
3)
Repeat the process of changing the SIDE1 & SIDE2 adjust-
ment values and then pressing the [OK] key until attaining an
acceptable level.
SIDE1: Adjustment value for the position at which to read the
leading edge of the original in DSPF front side mode. 
SIDE2: Adjustment value for the position at which to read the
leading edge of the original in DSPF back side mode. 
(The adjustment value should be changed in steps of 0.1 mm.)
(The timing in which to start reading the image should be
determined based on the timing in which detector SPPD4
detects the leading edge of the original.) 
Repeat steps 2 to 3 until an acceptable result is obtained.
(Trailing edge image loss adjustment)
1)
In DSPF mode, make a duplex copy at 100% magnification,
and make sure that the trailing edge image loss is 1.5 mm for
both the front and back sides. (Select duplex mode from the
paper selection mode as described in Simulation 50-6).
If an acceptable result is not obtained, do the following steps.
2)
Repeat the process of changing the TRAIL_EDGE adjustment
value and then pressing the [OK] key until attaining an accept-
able level. 
Repeat the above adjustments until an acceptable result is
obtained.
(Front/rear frame direction image loss adjustment)
Set the front surface/back surface (FRONT_REAR) adjustment
value to 20 by entering "20" into the FRONT_REAR adjustment
value field and then pressing the [OK] key. 
Note that changing this adjustment value shifts the image position
in the front/rear frame direction.
 
ADJ 21
Print lead edge image position 
adjustment (Printer mode) 
(Print engine section)
This adjustment is required in the following cases:
* When the resist roller section is disassembled.
* When the LSU is replaced or removed.
* When a U2 trouble occurs.
* When the PCU PWB is replaced.
* When the EEPROM on the PCU PWB is replaced.
(Caution)
This adjustment is performed by the user to increase the lead edge
void area to greater than the standard value (3mm) in the printer
mode.
Item
Default
A
SIDE1
Front surface document 
scan start position 
adjustment (CCD)
50
B
SIDE2
Back surface document 
scan start position 
adjustment (CCD)
50
C
Image loss 
amount 
setting: 
SIDE1
LEAD_EDGE 
(SIDE1)
Front surface lead edge 
image loss amount setting
20
D
FRONT_REAR 
(SIDE1)
Front surface side image 
loss amount setting
20
E
TRAIL_EDGE 
(SIDE1)
Front surface rear edge 
image loss amount setting
30
F
Image loss 
amount 
setting: 
SIDE2
LEAD_EDGE 
(SIDE2)
Back surface lead edge 
image loss amount setting
30
G
FRONT_REAR 
(SIDE2)
Back surface side image 
loss amount setting
20
H
TRAIL_EDGE 
(SIDE2)
Back surface rear edge 
image loss amount setting
20
Papar lead edge
TIL = 1.5 mm
TV = 3.5 mm
Image area
Void (TV)
Image loss (TIL)
No Image
Papar trail edge
TIL = 1.5 mm
TV = 3.5 mm
Image area
Void (TV)
Image loss (TIL)
No Image
MX-7000N  ADJUSTMENTS  6 – 39
1)
Enter the simulation 50-05 mode.
2)
Select the set item E with the scroll key, and enter the value
corresponding to the paper feed tray with A4 (11 x 8.5) paper
in it.
3)
Press [EXECUTE] key.
The adjustment pattern is printed.
4)
Measure the distance from the paper lead edge the adjustment
pattern to the image lead edge, and check to confirm that it is
in the standard adjustment value range.
Standard adjustment value: 3.0 
± 2.0mm
If the above condition is not satisfied, perform the following
procedures.
5)
Select the adjustment target of the paper feed mode adjust-
ment item DENC with the scroll key.
6)
Change the adjustment value.
Enter the adjustment value and press [OK] or [EXECUTE] key.
When [EXECUTE] key is pressed, the adjustment pattern is
printed.
When the adjustment value is increased, the distance from the
paper lead edge to the image lead edge is increased. When
the adjustment value is decreased, the distanced is
decreased.
When the set value is changed by 1, the distance is changed
by about 0.1mm.
Repeat the procedures 4) – 6) until the condition of 4) is satisfied.
A : 30
;
DEN-C
B : 20
;
DEN-B
C : 20
;
FRONT/REAR
D : 1
;
MULTI COUNT
A:
SIMULATION NO.50-05
LEAD EDGE ADJUSTMENT VALUE (PRINTER)
XX
1
99
OK
TEST
CLOSE
E : 2
;
PAPER : CS1
F :
1
;
DUPLEX : NO
EXECUTE
A : 40
;
DEN-C
B : 20
;
DEN-B
C : 20
;
FRONT/REAR
D : 1
;
MULTI COUNT
A:
SIMULATION NO.50-05
LEAD EDGE ADJUSTMENT VALUE (PRINTER)
XX
1
99
OK
TEST
CLOSE
E : 2
;
PAPER : CS1
F :
1
;
DUPLEX : NO
EXECUTE
End of print
EXECUTE
EXECUTE
Display/Item
Content
Adjustment range
Default value
Standard adjustment value
A
DEN-C
Printer print image lead edge adjustment
1 – 99
30
3.0 
± 2.0mm
D
MULTI COUNT
Print quantity
1 – 999
1
E
PAPER
MFT
Cassette select
Manual feed
1 – 6
1
2 (CS1)
CS1
Cassette 1
2
CS2
Cassette 2
3
CS3
Cassette 3
4
CS4
Cassette 4
5
LCC
LCC
6
F
DUPLEX
YES
Duplex print select
Select
0 – 1
0
1 (NO)
3.0±2.0mm
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