DOWNLOAD Sharp AL-800 (serv.man6) Service Manual ↓ Size: 2.56 MB | Pages: 19 in PDF or view online for FREE

Model
AL-800 (serv.man6)
Pages
19
Size
2.56 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / AL800 840 Service Manual-Adjustments
File
al-800-sm6.pdf
Date

Sharp AL-800 (serv.man6) Service Manual ▷ View online

9) Measure the length of the copied scale image and calculate the
main scanning direction magnification ratio.
Main scanning direction magnification ratio = Copy image dimen-
sion/Original dimension 
×
 100%
10) Check if the copy magnification ratio is within the specified range
(100 
±
 1%).
If the copy magnification ratio is within the specified range, the
adjustment is completed.
If not, perform the following procedures.
(When the copy magnification ratio is over 100 
±
 1.0% with SIM
48-1 main scanning direction (manual) adjustment mode copy
magnification ratio is 50)
11) Change the CCD unit fixing position and repeat procedures 7) 
11).
*
Troubles caused by improper work
1) Never touch the other screws than the CCD unit fixing screw.
If the other screws are touched, insufficient resolution, image dis-
tortion, etc. may re resulted, which cannot be adjusted.
*
Preliminary work
JOB No
Content
ADJ M2/ADJ3
Copy sub scanning direction distortion
adjustment
*
After-work
JOB No
Content
ADJ M3/ADJ 2
Sub scanning direction copy
magnification ratio
*
Necessary tools
Name
Scale
Parts code/Price rank
Name
Test chart (resolution check chart)
Parts code/Price rank
UKOG-0089CSZZ
*
Note
With the SIM 48-1 adjustment value set to 50, change the CCD unit
fixing position. If the copy magnification ratio is adjusted within the
specified range (100 
±
 1.0%), focus is adjusted as a result. (The
specified resolution is obtained.)
If the copy magnification ratio is within the specified range (100 
±
1.0%) with the SIM 48-1 adjustment value set to 50, but if the
specified resolution is not obtained, perform the following procedures.
1) Set the SIM 48-1 adjustment value to 50.
2) Change the CCD unit fixing position so that the specified resolu-
tion is obtained.
At that time, the main scanning direction copy magnification ratio
may be outside the specified range (100 
±
 1.0%).
3) Change the adjustment value of SIM 48-1 to adjust so that the
main scanning direction copy magnification ration is in the
specified range (100 
±
 1.0%).
ADJ 2
Sub scanning direction copy
magnification ratio adjustment
*
Adjustment value
(Test command (et value))
Range (MIN)
0
Range (MAX)
99
Standard value
50
Default
50
(Sub scanning direction copy magnification ratio)
Copy magnification ratio
display value
Actual copy magnification ratio
100%
Within 
±
 1.0% of the displayed
copy magnification ratio
*
Program used
Test command (Simulation)
MODE
Normal
MAIN CODE
48
SUB CODE
1
*
Execution condition (time)
Enforcement
time
JOB No
Content
S 004
When any part in the scanner
(reading) section is
disassembled or replaced.
ADJ M3/
ADJ 1
When the main scanning
direction copy magnification
ratio is adjusted.
S 009/Ua 002
When the MCU PWB is
replaced
In case of U2 trouble
Cycle
Condition
When the sub scanning
direction copy magnification
ratio is not within the specified
range.
*
Necessary condition
1) The copy image distortion is within the specified range.
2) The copy image is free from deflection.
3) The copy image density is within the specified range.
4) The main scanning direction coy magnification ratio is within the
specified range.
*
Work content
1) Enter the simulation 48-1 mode.
2) Select the sub scanning direction adjustment mode with the copy
picture quality mode select key.
(The currently set copy magnification ratio adjustment value is
displayed on the copy quantity display.)
100
110
120
130
150
140
mm
1/2mm
JAPAN
HARDDENCD
STAINLESS
Shizuoka
100
110
120
130
150
140
mm
1/2mm
JAPAN
HARDDENCD
STAINLESS
Shizuoka
110
10
20
10
20
(When a 100mm scale is used as the original)
Original (scale)
Reference
Comparison point
Copy
Note: To minimize the reading errer, measure at scale of 110 with
7 – 9
Adjustment mode
Adjustment
mode (Lighting)
Note
Main
scanning 
direction 
Auto
Auto copy
mode lamp
The adjustment is made
automatically by the
software.
Manual
Manual copy
mode lamp
The adjustment is made
manually.
Sub
scanning 
direction
Manual
Photo copy
mode lamp
The adjustment is made
by changing the
scanning speed.
3) Place the scale on the document table as shown below, and make
a copy in the text copy mode (100%) (Display) at a proper density.
4) Measure the copied scale length and calculate the sub scanning
direction copy magnification ratio.
Main scanning direction copy magnification ratio = Copy image
dimension/Original dimension 
×
 100%
5) Check that the copy magnification ratio is within the specified
range (100 
±
 1.0%).
If the copy magnification ratio is within the specified range (100 
±
1.0%). the adjustment is completed.
If not, perform the following procedures.
6) Change the adjustment value of SIM 48-1 sub scanning direction
copy magnification ratio.
When the adjustment value is increased by "1", the main scanning
direction copy magnification ratio is increased by 0.1%.
Repeat procedures 3) 
 6) until the copy magnification ratio is
within the specified range (100 
±
 1.0%).
*
Preliminary work
JOB No
Content
ADJ M3/ADJ 1
Main scanning direction copy
magnification ratio adjustment
*
Necessary tools
Name
Scale
Parts code/Price rank
*
Note
1) If this adjustment is performed when the main scanning direction
copy magnification ratio is not in the specified range (100%
±
0.1%) the proper copy magnification ratio cannot be obtained.
ADJ M4
Copy image position adjustment (Main
scanning direction)
*
Adjustment value
(Test command (Simulation) (Set value))
Range (MIN)
0
Range (MAX)
99
Standard value
50
Default
50
(Copy image position (Main scanning direction))
When the copy image position is compared with the original image
position, the shift must be within 0 
±
 2.0mm.
*
Program used
Test command (Simulation)
MODE
Normal
MAIN CODE
50
SUB CODE
10
*
Execution condition (time)
Enforcement
time
JOB No
Content
S 004
When any part of the scanner
section (reading) is
disassembled and replaced.
S 009/Ua 002
When replacing MCU PWB
In case of U2 trouble
Cycle
Condition
When the copy image position
(main scanning direction) is not
in the specified range.
*
Necessary conditions
1) The copy image distortion is within the specified range.
2) The main scanning direction copy magnification ratio is within the
specified range.
3) When the paper guide position is fit with the paper width.
*
Work content
1) Make a test sheet.
Draw a line in the longitudinal direction (paper transport direction)
on A4 (11 
×
 8.5") paper.
A6
B6
51/2
A5
B5
81/2
A4
Scale
100
110
120
130
150
140
mm
1/2mm
JAPAN
HARDDENCD
STAINLESS
Shizuoka
100
110
120
130
150
140
mm
1/2mm
JAPAN
HARDDENCD
STAINLESS
Shizuoka
110
10
20
10
20
(When a 100mm scale is used as the original)
Original (scale)
Reference
Comparison point
Copy
Note: To minimize the reading errer, measure at scale of 110 with
0±2.0mm
Original
Copy
A4(11x8.5)
Straight line
7 – 10
2) Fit the check sheet with the original guide mark (reference posi-
tion).
3) Enter the simulation 50-10 mode.
And select the adjustment mode copy image position adjustment.
(Main scanning direction) with the copy picture quality mode
select key (Photo copy mode lamp is ON).
Adjustment
mode
Adjustment mode display
(LIghting)
Note
Main scanning
direction image
position
Photo copy mode lamp
Main scanning
direction image
position (SPF
mode)
Auto/Photo/Text copy
mode lamp 
Left void area
Auto copy mode lamp
Right void area
Text copy mode lamp
(The currently set copy image position adjustment value in the
main scanning direction (back-forth direction) is displayed on the
copy quantity display.
4) Make a copy on A4 (11 
×
 8.5") paper.
5) Fit the original (check sheet) tip with the copy paper tip to check
that the image position shift is within 0 
±
 2.0mm.
If not, change the adjustment value of SIM 50-10 and repeat
procedures 4) and 5) until the shift is within the specified range.
The adjustment value can be set in the range of 0 
 99.
When the adjustment value is changed by 1, the copy image
position is shifted by 0.1mm in the main scanning direction.
*
After work
JOB No
Content
ADJ M6
Copy image area (image loss, void area,
adjustment)
*
Necessary tools
Name
Check sheet (Self-made)
Parts code/Price rank
*
Note
If the copy image position in the main scanning direction cannot be
adjusted within the specified range with this adjustment, check the
paper feed operation.
ADJ M5
Copy image area (Image loss, void
area) adjustment
ADJ 1
Image loss, void area (lead edge, tail
edge) adjustment
*
Adjustment value
(Simulation djustment value)
Image
lead edge
position
Image
scanning
start
position
Lead
edge void
area
Trail edge
void area
Range
(MIN)
0
0
0
0
Range
(MAX)
99
99
99
99
Standard
value
50
50
50
50
Default
50
50
50
50
(Image loss, void area adjustment value)
Image
lead edge
position
Lead
edge
image loss
Lead
edge void
area
Trail edge
void area
Range
(MIN)
1.0mm
1.0mm
Range
(MAX)
5.0mm
5.0mm
Standard
value
0mm
2.5mm
2.5mm
2.5mm
*
Pogram used
Test command (Simulation)
MODE
Normal
MAIN CODE
50
SUB CODE
1
*
Execution condition (time)
Enforcement
time
JOB No
Content
S 004
When any part in the scanner
(reading) section is
disassembled or replaced.
S 009/Ua 002
When the MCU PWB is
repalced.
In case of U2 trouble
Cycle
Conditions
When the copy image area
(image loss, void area) is not
within the specififed range. 
*
Necessary condition
1) The copy magnification ratio is within the specified range. 
2) The copy distortion is within the specified range. 
*
Work content
There are following four adjustment items. 
The image loss and the void area at the paper lead edge and the rear
edge can be adjusted by changing the adjustment values. 
Lldv
Ltv
Llv
Lrv
Llp
Liml
Copy image
Paper lead edge line
Image lead edge
Lldv : Lead edge void area
Ltv : Rear edge void area
Llv : Left void area
Lrv : Right void area
Liml : Lead edge image loss
Llp : Image lead edge position
         (Distance between the
          paperlead edge and the
          image lead edge)
7 – 11
Adjustment item
Adjustment
mode display
(Lighting)
Note
Image lead edge
position (Print
start position)
Auto copy mode
lamp
Used to determine the positions of
paper and images. The paper lead
edge is aligned with the document
lead edge reference position (image
lead edge).
(Corresponds to the time from
detection og the paper lead edge by
PIN detector to print start (scanner
start). 
Image lead edge
reference
position (Image
scannign start
position)
Photo copy
mode lamp
Used to determine the image lead
edge reference position. (Used to
determine the distance from the
scanner home position to the
document lead edge refrence
position.)
Lead edge void
area (Image loss)
Manual copy
mode lamp
Used to adjust the lead edge section
effective image amount, 
The image amount scanned until the
scanner reaches the image lead edge
reference position after start scanning
and the image amount scanned
during the time corresponding to this
setting are cut (made invlaid) to form
the image loss and the void area. 
Rear edge void
area
Auto/Photo/
Manual copy
mode lamp
Used to determine the print image
(data) cut timing.
The PIN detector detects the paper
length.
The print image (data) cut timing is
determined from the detected paper
length and the sub scanning direction
image length. 
1) Enter the SIM 50-1 mode.
2) Select the adjustment mode image lead edge position (print start
position) with the copy picture quality mode select key. 
(The currently set adjustment value is displayed on the copy
quantity display.)
3) Set  the value to  "50" and press the start button.
(the adjustment value is stored and a copy is made.)
When the set value is increased, the image lead edge position is
shifted forward for the paper lead edge position.
When the set value is decreased, the image lead edge position is
shifted backward for the paper lead edge position.
4) Place the scale at the document table lead edge reference in the
sub scanning direction, and place a white paper (A4, 11" 
×
 8.5") at
a slightely shifted position to the right of the scale. 
5) Select the adjustment mode image lead edge reference position
(image scan start position) with the copy picture quality mode
select key. 
(The currently set adjustment value is displayed on the copy
quantity display.)
6) Press the start button. (Make a copy with the document cover
open.)
(A copy is made.)
7) Measure the distance between the paper lead edge position and
the copy image lead edge reference position (scale image lead
edge).
If the scale image is cut halfway, assume the virtual lead edge of
the scale image for measurement.
If the distance between the paper lead edge and the image lead
edge is not 0 
±
 1.5mm, change the set value and press the start
button.
(the adjustment value is stored and a copy is made.)
When the set value is increased, the image lead edge position is
shifted forward for the paper lead edge position.
When the set value is decreased, the image lead edge position is
shifted backward for the paper lead edge position.
(Note)
If this adjustment value is improper, the copy image lead edge
position varies when the copy magnification ratio is chanfed. 
8) Select the adjustment mode lead edge void area (image loss) with
the copy picture quality mode select key. 
(The currently set adjustment value is displayed on the copy
quantity display.)
9) Press the start button. 
(A copy is made.)
10) Measure the lead edge void area (image loss). 
If the distance between the paper lead edge and the copy image
lead edge is not 2.5
±
15mm, change the set value and press the
start button. 
A6
B6
51/2
A5
B5
81/2
A4
Scale
Allow a clearance.
White paper
(A4, 11" x 8.5")
10
20
30
40
50
0mm
Paper lead edge
Image lead edge
Copy scale image
10
20
30
40
50
2.5mm
Void area
Paper lead edge
Copy scale image
Image loss
7 – 12
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