Sharp AR-C262M (serv.man3) Service Manual ▷ View online
AR-C262M SETTING AND ADJUSTMENTS 8 - 14
Example
A: Providing that Current adjustment value = 48:
1) When Y
≥
0, and X
≥
0:
B = A + X + Y = 48 + (4) + (20) = 72
2) When Y
≥
0, and X < 0:
B = A + (X + 20) + Y = 48 + (–6 + 20) + (20) = 82
3) When Y < 0, and X
≥
0:
B = A + (X – 20) + Y = 48 + (7 – 20) + (– 20) = 15
4) When Y < 0, and X < 0:
B = A + X + Y = 48 + (– 5) + (– 20) = 23
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
60
-60
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
60
-60
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
60
-60
9
8
7
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
60
-60
AR-C262M SETTING AND ADJUSTMENTS 8 - 15
This adjustment must be performed in the following cases:
• When the paper tray is replaced.
• When the paper tray section is disassembled.
• When the manual paper feed tray is replaced.
• When the manual paper feed tray is disassembled.
• When the duplex section is disassembled.
• When the duplex section is installed or replaced.
• When the large capacity paper feed tray is installed or replaced.
• When the large capacity paper feed tray is disassembled.
• When a U2 trouble occurs.
• When the ICU main PWB is replaced.
• When the EEPROM of the ICU main PWB is replaced.
1) Enter the SIM 50-10 mode.
2) Select the paper feed mode to be adjusted with the scroll key.
3) Press the [EXECUTE] key.
The adjustment pattern is printed.
4) Check the adjustment pattern image position.
Measure the sizes of the void area on the front and the back
edges of the adjustment pattern, and check that the following
conditions are satisfied.
edges of the adjustment pattern, and check that the following
conditions are satisfied.
If A – B = 0 ± 4.0mm, there is no need to adjust.
If the above condition is not satisfied, perform the following
procedure.
procedure.
5) Change the adjustment value.
(Enter the adjustment value and press the [OK] key.)
When the adjustment value is increased, the image is shifted
backward.
backward.
When the adjustment value is decreased, the image is shifted
forward.
forward.
A change in the set value by 1 corresponds to a change in the
shift by about 0.1mm.
shift by about 0.1mm.
Repeat procedures 3) – 5) until the condition of procedure 4)
is satisfied.
is satisfied.
If the above procedure does not satisfy the condition of 4),
perform the following procedure.
perform the following procedure.
6) Loosen the paper feed tray cover fixing screw, and shift the
installing position in the arrow direction.
Perform procedures from 2) again.
Perform the above procedures for all paper feed units.
This adjustment must be performed in the following cases:
• When a U2 trouble occurs.
• When the ICU PWB is replaced.
• When the EEPROM of the ICU PWB is replaced.
1) Enter the SIM 50-5 mode.
2) Select the paper feed mode with the scroll key.
3) Press the [EXECUTE] key.
The adjustment pattern is printed.
4) Check the adjustment pattern image position.
Measure the sizes of the void area on the left and the right
edges of the adjustment pattern, and check that the following
conditions are satisfied.
edges of the adjustment pattern, and check that the following
conditions are satisfied.
If A = 4.0 ± 2.0mm and B = 4.0 ± 2.0mm, the adjustment is not
required.
required.
If the above condition is not satisfied, perform the following
procedure.
procedure.
5) Change the adjustment values of item A (DEN-C) and B
(DEN-B), and press the [EXECUTE] key.
When the adjustment value of item A (DEN-C) is decreased by
1, the print start position in the sub scanning direction is
shifted to the paper lead edge by 0.125mm.
1, the print start position in the sub scanning direction is
shifted to the paper lead edge by 0.125mm.
When the adjustment value of item B (DEN-B) is decreased by
1, the print start position in the sub scanning direction is
shifted to the paper rear edge by 0.125mm.
1, the print start position in the sub scanning direction is
shifted to the paper rear edge by 0.125mm.
Repeat procedures 3) – 5) until the condition of procedure 4)
is satisfied.
is satisfied.
ADJ 5
Image position/print area adjustment (Print engine section)
ADJ 5A
Main scanning direction image
position adjustment
(Print engine section)
position adjustment
(Print engine section)
B
A
A–B = 0 4.0mm
+
-
ADJ 5B
Sub scanning direction image
position/print area adjustment
(Print engine section)
position/print area adjustment
(Print engine section)
Paper feed tray cover
fixing screw
fixing screw
Paper feed tray cover
fixing screw
fixing screw
A
A = 4.0 2.0mm
+
-
B = 4.0 2.0mm
+
-
B
AR-C262M SETTING AND ADJUSTMENTS 8 - 16
This adjustment must be performed in the following cases:
• When the scanner (reading) section is disassembled.
• When a copy image distortion occurs.
1) Loosen the screw that is fixing the scanner unit A and the drive
wire, and remove the scanner unit A from the drive wire.
2) Manually turn the scanner drive pulley to bring the scanner
unit B into contact with the stopper.
At that time, if the scanner unit B makes contact with the two
stoppers on the front and the rear frame simultaneously, the
parallelism of the scanner unit B is proper.
stoppers on the front and the rear frame simultaneously, the
parallelism of the scanner unit B is proper.
If not, perform the following procedures.
3) Loosen the pulley angle fixing screw on the front frame side of
the scanner unit B.
4) Adjust the pulley angle position on the scanner unit B front
frame side so that both stoppers on the front frame and the
rear frame are in contact with the scanner unit B at the same
time.
rear frame are in contact with the scanner unit B at the same
time.
5) Fix the pulley angle on the scanner unit B front frame side.
If the above procedure does not result in a satisfactory result,
perform the following procedure.
perform the following procedure.
Loosen the fixing screw of the scanner unit drive pulley that is
not in contact.
not in contact.
Without moving the scanner unit drive shaft, manually turn the
scanner unit drive pulley so that the scanner unit B is brought
into contact with the stopper on the front frame side and the
stopper on the rear frame side at the same time. (Change the
relative positions of the scanner unit drive pulley and the drive
shaft.)
scanner unit drive pulley so that the scanner unit B is brought
into contact with the stopper on the front frame side and the
stopper on the rear frame side at the same time. (Change the
relative positions of the scanner unit drive pulley and the drive
shaft.)
Fix the scanner unit drive pulley fixing screw.
ADJ 6
Copy image distortion
adjustment
adjustment
ADJ 6A
Scanner (reading) unit parallelism
adjustment
adjustment
Scanner unit B
Winding pulley
AR-C262M SETTING AND ADJUSTMENTS 8 - 17
6) With the scanner unit B in contact with the both stoppers on
the CCD mounting plate at the same time, fit the edge of the
scanner unit A with the frame right edge and fix the scanner
unit A with the screw.
scanner unit A with the frame right edge and fix the scanner
unit A with the screw.
1) Make a test chart on A3 (11" x 17") paper as shown below.
(Draw a rectangular with four right angles.)
2) Set the test chart made in procedure 1) on the document
table. (Leave a space of about 30mm between the reference
position and the test chart.) With the document cover open,
make a copy on A3 (11" x 17").
position and the test chart.) With the document cover open,
make a copy on A3 (11" x 17").
3) Check for distortion in the sub scanning direction.
If La = Lb, there is no distortion.
If there is some distortion in the sub scanning direction, perform
the following procedures.
the following procedures.
4) Loosen either of two fixing screws of the scanner unit drive
pulley. (Either one on the front or the rear side will do.)
5) With the scanner unit drive shaft kept stationary, turn the scan-
ner unit drive pulley manually to change the parallelism of
scanner units A and B. (Change the relative positions of the
scanner unit drive pulley and the drive shaft.)
scanner units A and B. (Change the relative positions of the
scanner unit drive pulley and the drive shaft.)
6) Tighten the scanner unit drive pulley fixing screw.
Repeat procedures 2) – 6) until the condition of procedure 3)
is satisfied.
is satisfied.
If the distortion in the sub scanning direction cannot be deleted
with the above procedures, perform ADJ 6D, Scan image distor-
tion adjustment.
with the above procedures, perform ADJ 6D, Scan image distor-
tion adjustment.
ADJ 6B
Copy image sub scanning direction
distortion adjustment
distortion adjustment
L
L
L
L
L = 10mm
Lb
La
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