Read Sharp MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man9) Service Manual online
MX-3640N ADJUSTMENTS AND SETTINGS 5 – 79
2) Make a duplex copy at the normal ratio on A4 paper.
3) Measure the images on the co py paper and the original
3) Measure the images on the co py paper and the original
images.
4) Obtain the image magnification ratio according to the following
formula:
Image magnification ratio = Original size / Original size x 100
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
(100 0.8%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
If it is not within the specified range, perform the following pro-
cedures.
5) Enter the SIM 48-1 mode.
6) Select an adjustment item with the scroll key.
7) Enter an image magnification ratio adjustment value with 10-
key, and press [OK] key.
When the adjustment value is increased, the image magnifica-
When the adjustment value is increased, the image magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the image magni-
When the adjustment value is changed by 1, the image magni-
fication ratio is changed by 0.1%.
8) Make a normal copy and obtain the copy magnification ratio.
Repeat the procedures of 1) - 8) until a satisfactor y result is
Repeat the procedures of 1) - 8) until a satisfactor y result is
obtained.
ADJ 17
Scan image off-center
adjustment
(Manual adjustment)
Normally if the adjustment is executed by ADJ 4 (automatic adjust-
ment), there is no need to execute this adjustment.
Only when the manual adjustment is required, execute this adjust-
Only when the manual adjustment is required, execute this adjust-
ment.
In other words, this manual ad justment is executed when a satis-
In other words, this manual ad justment is executed when a satis-
factory result is not obtained from the automatic adjustment (ADJ
4).
17-A
Scan image off-center adjustment (Manual
adjustment) (Document table mode)
This adjustment must be performed in the following cases:
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
1) Make a copy of the adjustment chart (made by yourself) in the
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When a U2 trouble occurs.
* When the scanner control PWB is replaced.
* When the EEPROM on the scanner control PWB is replaced.
1) Make a copy of the adjustment chart (made by yourself) in the
adjustment mode (document table).
2) Check the copy image center position.
If A - B = 1.0mm, the adjustment is not required.
If the above condition is not satisfied, p erform the following
procedures.
Item
Display
Content
Setting
range
Default
value
A
CCD(MAIN)
SCAN main scanning
magnification ratio
adjustment (CCD)
1 - 99
50
B
CCD(SUB)
SCAN sub scanning
magnification ratio
adjustment (CCD)
1 - 99
50
C
SPF(MAIN)
RSPF document front
surface magnification ratio
adjustment (Main scan)
1 - 99
50
D
SPF(SUB)
RSPF document front
surface magnification ratio
adjustment (Sub scan)
1 - 99
50
E
SPFB(MAIN)
RSPF document back
surface magnification ratio
adjustment (Main scan)
1 - 99
50
F
SPFB(SUB)
RSPF document back
surface magnification ratio
adjustment (Sub scan)
1 - 99
50
SPF (SUB)
Sub scanning direction image magnification ratio
(Front surface)
SPFB (SUB)
Sub scanning direction image magnification ratio
(Back surface)
original
copy
10
50
100
150
200
10
50
100
150
200
ǂǂǂ6,08/$7,21ǂǂ12
&/26(
7(67
0$*1,),&$7,21$'-8670(17
$˖
˷̚˹
˖&&'0$,1
$˖
˖&&'68%
%˖
˖63)0$,1
&˖
˖63)68%
'˖
˖63)%0$,1
(˖
˖63)%68%
)˖
2.
B
A = B
A
B'
A' - B' =
1.0mm
A'
(100%)
Click on the first or last page to see other MX-2640N / MX-2640NR / MX-2640FN / MX-3140N / MX-3140NR / MX-3140FN / MX-3640N / MX-3640NR / MX-3640FN (serv.man9) service manuals if exist.