Read Sharp MX-M850 (serv.man16) Service Manual online
MX-M1100 TRAY PAPER FEED SECTION E – 5
2. Operational descriptions
A. Preliminary operation before paper feed
1)
Set paper in the tray, and insert the tray into the machine. The
tray sensor turns on.
tray sensor turns on.
2)
The lift-up motor operations to lift the tray.
3)
The paper upper limit sensor turns on to stop the tray at the
specified position.
specified position.
B. Paper feed operation
1)
When copy/print operation is started, the motors (MM1, MM2)
and the clutch (C1PFC) are turned on to turn on the colenoid
(C1PUS) at the timing of paper pickup. This rotates and falls
the take-up roller to pick up paper.
and the clutch (C1PFC) are turned on to turn on the colenoid
(C1PUS) at the timing of paper pickup. This rotates and falls
the take-up roller to pick up paper.
2)
At the same time, the paper feed roller rotates to feed paper to
the transport section.
At that time, the separation roller rotates to prevent against
double feed of paper.
the transport section.
At that time, the separation roller rotates to prevent against
double feed of paper.
C. Each paper feed tray paper size detection method
Paper feed tray (Paper feed tray 3), multi purpose paper feed tray
(Paper feed tray 4).
1)
(Paper feed tray 4).
1)
Paper width detection
The paper width is calculated with the VR voltage value (A/D
conversion value) linked with the side guide plate.
Paper width and paper size (set in the range of standard value
± 6 mm).
The paper width is calculated with the VR voltage value (A/D
conversion value) linked with the side guide plate.
Paper width and paper size (set in the range of standard value
± 6 mm).
2)
Paper size detection
The paper size detection is made by the combination of the
cassette paper size detector 1 to 4.
The paper size detection is made by the combination of the
cassette paper size detector 1 to 4.
Relationship between paper size and detection by the paper size detector.
3)
Combination of size detection.
Width size
detection
pattern
Paper size
Standard
value
[mm]
Range [mm]
A
A3/A4
297.0
303.0 to 291.0
B
WLT/LT
279.4
285.4 to 273.4
C
B4/B5
257.0
263.0 to 251.0
D
LG/LTR/Foolscap
215.9
221.9 to 209.9
E
A4R
210.0
216.0 to 204.0
F
Exective-R
184.1
190.1 to 178.1
G
B5R
182.0
188.0 to 176.0
CSS2
CSS1
CSS3
CSS4
Vertical size
detection
Pattern
Detection SW state
AB size
Inch size
Width of detection
range
CSS1
CSS2
CSS3
CSS4
1
ON
ON
OFF
ON
B5
Extra
147.0 to 198.0
2
OFF
ON
OFF
ON
A4
LT
198.0 to 237.0
3
OFF
ON
ON
ON
B5R
EX-R
237.0 to 274.0
4
OFF
OFF
ON
ON
A4R
LTR
274.0 to 314.0
5
ON
OFF
ON
ON
Foolscap
Extra
314.0 to 347.0
6
ON
OFF
ON
OFF
B4
LGL
347.0 to 389.0
7
ON
ON
ON
OFF
A3
WLT
389.0 to 432.8
0
OFF
OFF
OFF
OFF
Paper feed tray not attached
Paper size
Width detection
pattern
Vertical detection
pattern
B5
C
1
A4
A
2
B5R
G
3
A4R
E
4
Foolscap
D
5
B4
B
6
A3
A
7
LT
B
2
EX-R
F
3
LTR
D
4
LGL
D
6
WLT
B
7
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