Panasonic KV-S7075C (serv.man2) Service Manual ▷ View online
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5.3.
Drive Belts
Drive Belt 1
Conveyor Motor
Drive Belt 3
Drive Belt 2
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5.4.
Boards
5.4.1.
ADF Block
ADF Door Switch
OUTER CONVEYOR RELAY Board
Double Feed Detector (G)
STARTING SENSOR Board
CIS (B) RELAY Board
CIS (B) LED RELAY Board
ENDING SENSOR Board
HOPPER HOME DETECTOR Board
SIZE DETECTOR Board
Paper Sensor
SENSOR RELAY Board
WAITING SENSOR Board
POWER RELAY Board
HOPPER RELAY Board
Exit Door Switch
Double Feed Detector (R)
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5.4.2.
Flatbed Block and others
CIS (F) RELAY Board
(inside the cover)
(inside the cover)
DOCUMENT COVER DETECTOR Board
DRIVE Board
POWER Board
Carriage Motor
PANEL Board
CENTER Board
CONTROL Board
CARRIAGE HOME DETECTOR Board
CIS (F)
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6 MECHANICAL FUNCTION
6.1.
Paper Feed Mechanism (Auto)
Fig.6.1
1. When the documents are set on the Hopper and the scanning command is issued from PC, the Hopper rises and the paper will
be brought into contact with Paper Feed Roller.
be brought into contact with Paper Feed Roller.
2. The Conveyor Motor is driven to rotate the 4 Drive Rollers and Exit Roller.
3. When the Paper Feed Motor starts, the Paper Feed Roller and the Separation Roller rotate in feed direction.
The Double-feed Prevention Roller is supported by shaft fixed via a torque limiter, and it is pushed against the Separation Roller.
When documents enter the separation section, the Double-feed Prevention Roller exerts a manipulation force onto them,
which depends on a set torque. In the case of continuous paper feed, the documents are separated by this
manipulation force, so only one sheet of the documents is fed to the scanning section.
The Double-feed Prevention Roller is supported by shaft fixed via a torque limiter, and it is pushed against the Separation Roller.
When documents enter the separation section, the Double-feed Prevention Roller exerts a manipulation force onto them,
which depends on a set torque. In the case of continuous paper feed, the documents are separated by this
manipulation force, so only one sheet of the documents is fed to the scanning section.
4. When the leading edge of the document advances to about 10 mm from the Drive Roller1 after passing through the separation
section and Waiting Sensor, the Paper Feed Motor stops and the Paper Feed Roller and the Separation Roller are turned by
the advancing document.
section and Waiting Sensor, the Paper Feed Motor stops and the Paper Feed Roller and the Separation Roller are turned by
the advancing document.
5. When the leading edge of the document passes through the Starting Sensor, image scanning starts after a defined period.
(i.e., the time required for the document to advance from the Starting Sensor to the scanning start point)
(i.e., the time required for the document to advance from the Starting Sensor to the scanning start point)
6. When the trailing edge of the document reaches a defined distance from the Waiting Sensor, the Paper Feed Motor is driven
again to feed the 2nd document.
again to feed the 2nd document.
7. Repeat the above 3 to 6.
8. After the scanning process completes, the Hopper returns to its original position and the scanning sequence ends.
Note:
When the scanner’s buffer becomes full, the scanner stops to prevent buffer overflow, while allowing the data to be
When the scanner’s buffer becomes full, the scanner stops to prevent buffer overflow, while allowing the data to be
transferred to the PC continuously.
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