Sharp MX-B201D (serv.man9) Service Manual ▷ View online
MX-B201/B201D DISASSEMBLY AND ASSEMBLY 8 - 21
(4)
Pickup roller removal
1) Disengage one pawl.
2) Remove the pickup drive gear from the pickup roller.
I.
Paper empty sensor
(1)
Paper feed PG unit removal
1) Remove the harness.
2) Remove three screws.
3) Lift the front side, and remove the paper feed PG unit.
(2)
Paper feed PG support plate removal
1) Remove one screw.
2) Slide and remove the paper feed PG support plate.
(3)
Paper empty sensor removal
1) Disconnect one connector.
2) Remove the paper empty sensor.
J. PS roller
(1)
Parts removal
1) Remove the gear.
2) Remove the pulley.
3) Remove the belt.
(2)
Parts removal
1) Remove one screw.
2) Remove the earth wire.
3) Remove the E-ring.
4) Remove the bearing.
5) Open the scan plate.
■ Note for reassembly
Pass the earth wire through the hole to the outside of the frame,
then install parts.
Pass the earth wire through the hole to the outside of the frame,
then install parts.
1
3
2
2
3
2
1
2
1
2
1
1
3
2
4
1
5
3
4
2
MX-B201/B201D DISASSEMBLY AND ASSEMBLY 8 - 22
(3)
Scan plate removal
1) Remove the scan plate.
(4)
PS roller removal
1) Remove the PS roller.
K. Upper transport roller
(1)
Parts removal
1) Remove the gear.
2) Remove the upper transport release arm.
3) Remove the bearing.
4) Remove the E-ring.
5) Remove the bearing.
■ Note for reassembly
Use care so that the rib on the upper transport release arm catches
the guide.
Use care so that the rib on the upper transport release arm catches
the guide.
(2)
Upper transport roller removal
1) Remove the upper transport roller.
L. Paper sensor
1) Disconnect one connector.
2) Remove the paper sensor.
M. Lower transport roller
(1)
Reverse self-weight gate removal
1) Remove the reverse self-weight gate.
1
1
1
2 3
5 4
1
2
1
1
MX-B201/B201D DISASSEMBLY AND ASSEMBLY 8 - 23
(2)
Lower transport roller removal
1) Remove the E-ring.
2) Remove the gear.
3) Remove the bearing.
4) Remove the lower transport roller.
N. Paper exit sensor
(1)
OC mat removal
1) Remove the OC mat.
(2)
Paper exit sensor removal
1) Disconnect one connector.
2) Remove the paper exit sensor.
4
1
2
3
3
1
2
1
MX-B201/B201D ADJUSTMENTS 9 - 1
[9] ADJUSTMENTS
1. Optical section
A. Copy magnification ratio adjustment
The copy magnification ratio must be adjusted in the main scan-
ning direction and in the sub scanning direction. To adjust, use
SIM 48-1.
ning direction and in the sub scanning direction. To adjust, use
SIM 48-1.
(1)
Outline
The main scanning (front/rear) direction magnification ratio adjust-
ment is made automatically or manually.
ment is made automatically or manually.
Automatic adjustment: The width of the reference line marked on
the shading correction plate is scanned to perform the main scan-
ning (front/rear) direction magnification ratio adjustment automati-
cally.
the shading correction plate is scanned to perform the main scan-
ning (front/rear) direction magnification ratio adjustment automati-
cally.
Manual adjustment: The adjustment is made by [Numeric] keys
operations. (In either of the automatic and manual adjustments, the
zoom data register set value is changed for adjustment.)
operations. (In either of the automatic and manual adjustments, the
zoom data register set value is changed for adjustment.)
The magnification ratio in the sub scanning direction is adjusted by
changing the carriage (scanner) scanning speed.
changing the carriage (scanner) scanning speed.
(2)
Main scanning direction magnification ratio
adjustment
adjustment
a. Cases when the adjustment is required
1) When the main PWB is replaced.
2) When the EEPROM in the main PWB is replaced.
3) When "U2" trouble occurs.
4) When repairing or replacing the optical section.
b. Necessary tools
• Screwdriver (+)
• Scale
c. Adjustment procedure
1) Set the scale vertically on the document table. (Use a long
scale for precise adjustment.)
2) Set the copy magnification ratio to 100%.
3) Make a copy on A4 or 81/2" x 11" paper.
4) Measure the length of the copied scale image.
5) Calculate the main scanning direction magnification ratio.
Main scanning direction magnification ratio
6) Check that the copy magnification ratio is within the specified
range. If it is not within the specified range, perform the follow-
ing procedures.
ing procedures.
7) Execute SIM 48-1 to select the main scanning direction copy
magnification ratio adjustment mode.
To select the adjustment mode, use the [
To select the adjustment mode, use the [
] [
] key.
In the case of the automatic adjustment, when the START switch is
pressed, the mirror base unit moves to the white plate for shading
to scan the width of the reference line, calculating the correction
value and displaying and storing this value.
pressed, the mirror base unit moves to the white plate for shading
to scan the width of the reference line, calculating the correction
value and displaying and storing this value.
After execution of the automatic adjustment, go out from the simu-
lation mode and make a copy to check the magnification ratio.
lation mode and make a copy to check the magnification ratio.
If the magnification ratio is not in the specified range (100 ± 1.0%),
manually adjust as follows.
manually adjust as follows.
8) Enter the new set value of main scanning direction copy magni-
fication ratio with the [Numeric] key and press the [START] key.
9) Change the set value and repeat the adjustment until the ratio is
within the specified range.
When the set value is changed by 1, the magnification ratio is
changed by 0.1%.
When the set value is changed by 1, the magnification ratio is
changed by 0.1%.
(3)
Sub scanning direction copy magnification ratio
a. Cases when the adjustment is required
1) When the scanner unit drive section is disassembled or the part
is replaced.
2) When the main PWB is replaced.
3) When the EEPROM in the main PWB is replaced.
4) When "U2" trouble occurs.
b. Necessary tools
• Scale
=
Copy image dimensions
X 100 (%)
Original dimension
Adjustment mode
Display
item
LED
Default
Main scan direction
magnification ratio
magnification ratio
F-R
PRINT mode lamp
50
OC mode sub scan
direction magnification ratio
direction magnification ratio
SCAN
SCAN mode lamp
50
100
110
120
130
150
140
mm
1/2mm
1/2mm
JAPAN
HARDENED
STAINLESS
STAINLESS
Shizuoka
100
110
120
130
150
140
mm
1/2mm
1/2mm
JAPAN
HARDENED
STAINLESS
STAINLESS
Shizuoka
110
10
20
10
20
(When a 100mm scale is used as the original.)
Paper feed
direction
direction
Reference
Comparison point
Original (Scale)
Copy
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