Panasonic KV-S1057C User manual

© Panasonic Corporation 2014
Unauthorized copying and distribution is a violation
of law.
Order Number KM71411921SE
Category Number G14
Document Scanner
Model No. KV-S1057C
KV-S1027C
KV-SL1066
KV-SL1056
KV-SL1055
KV-SL1036
KV-SL1035

2
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions -----------------------------------------------4
1.1. Standard for Repair Service-----------------------------4
1.2. For Service Technicians----------------------------------4
1.3. About Lead Free Solder (PbF: Pb free) --------------4
1.3.1. Suggested Pb free solder ---------------------------5
1.4. About RoHS -------------------------------------------------5
2 Specifications------------------------------------------------------6
3 Location of Controls and Components--------------------9
3.1. Main Unit -----------------------------------------------------9
3.2. Operation Panel and LED Indicators---------------- 11
3.3. About LED -------------------------------------------------12
4 Installation Instructions---------------------------------------13
4.1. Minimum Space Requirements-----------------------13
4.2. Included Accessories------------------------------------13
4.3. System Requirements ----------------------------------13
4.4. Installing Driver and Software-------------------------13
4.5. Connecting the Unit to a Personal Computer-----14
4.6. Installing the Unit-----------------------------------------14
4.7. Setting Documents and/or Card----------------------15
5 Section Views ----------------------------------------------------16
5.1. Motor --------------------------------------------------------16
5.2. Roller--------------------------------------------------------16
5.3. Board and Sensor----------------------------------------17
6 Mechanical Function-------------------------------------------18
6.1. Paper Feed Mechanism--------------------------------18
6.2. Sensor Mechanism --------------------------------------20
6.2.1. Paper Sensor-----------------------------------------20
6.2.2. Starting Sensor---------------------------------------20
6.2.3. Door Detector ----------------------------------------20
6.3. Gate Mechanism -----------------------------------------21
6.4. Background Color Switching Mechanism----------22
7 Disassembly and Assembly Instructions---------------23
7.1. Disassembly Flowchart---------------------------------23
7.2. Exterior------------------------------------------------------25
7.2.1. Feed tray ----------------------------------------------25
7.2.2. Paper Tray --------------------------------------------25
7.2.3. Exit Tray -----------------------------------------------25
7.2.4. Front Cover ------------------------------------------26
7.2.5. Back Cover--------------------------------------------26
7.2.6. Top Cover ---------------------------------------------26
7.2.7. PANEL SWITCH Board and LCD PANEL
Board (KV-S10xxC)---------------------------------27
7.2.8. PANEL Board (KV-SL10xx)-----------------------27
7.3. Upper Chassis --------------------------------------------28
7.3.1. Double Feed Prevention Roller -----------------28
7.3.2. PAPER SENSOR Board---------------------------28
7.3.3. ULTRASONIC SENSOR (G) Board ------------28
7.3.4. AUTO/MANUAL DETECTION Board ----------29
7.3.5. CIS (B) -------------------------------------------------29
7.3.6. Reference Plate (F)---------------------------------30
7.3.7. Free Roller --------------------------------------------30
7.3.8. Wiring of Upper Chassis---------------------------31
7.4. Lower Chassis 1------------------------------------------32
7.4.1. Paper Feed Roller ----------------------------------32
7.4.2. CIS (F) -------------------------------------------------32
7.4.3. Reference Plate (B)---------------------------------33
7.4.4. DOOR DETECTION Board-----------------------33
7.4.5. Side Plate Assembly--------------------------------34
7.4.6. Conveyor roller -------------------------------------- 34
7.4.7. Exit Roller--------------------------------------------- 35
7.5. Lower Chassis 2 ----------------------------------------- 36
7.5.1. Bottom Plate ----------------------------------------- 36
7.5.2. Platen Motor------------------------------------------ 36
7.5.3. FAN----------------------------------------------------- 36
7.5.4. Power Supply---------------------------------------- 36
7.5.5. CONTROL Board----------------------------------- 36
7.5.6. Conveyor Motor ------------------------------------- 37
7.5.7. STARTING SENSOR Board --------------------- 37
7.5.8. Wiring of Lower Chassis -------------------------- 37
7.6. Required Adjustments after Part Replacement -- 38
8 Maintenance------------------------------------------------------ 39
8.1. Maintenance Chart-------------------------------------- 39
8.2. Cleaning---------------------------------------------------- 39
8.3. Replacing Limited Life Parts-------------------------- 39
9 Service Utility & Self Test------------------------------------ 40
9.1. Main Menu Indication for Service Utility ----------- 40
9.2. List of Functions for Service Utility ------------------ 41
9.3. Operation -------------------------------------------------- 43
9.3.1. Scanner Status -------------------------------------- 43
9.3.2. Error Codes ------------------------------------------ 44
9.3.3. Scanner Information-------------------------------- 46
9.3.4. Scanner Counter------------------------------------ 46
9.3.5. Scanner Condition---------------------------------- 46
9.3.6. Test ----------------------------------------------------- 47
9.3.7. Adjustment-------------------------------------------- 50
9.3.8. Other--------------------------------------------------- 51
9.4. Scanner Self-test ---------------------------------------- 52
10 Troubleshooting ------------------------------------------------ 54
10.1. Troubleshooting -1
(when no error message is displayed on PC)---- 54
10.2. Troubleshooting-2
(when an error message is displayed on PC)---- 60
11 Block Diagram--------------------------------------------------- 70
11.1. Block Diagram-1 ---------------------------------------- 70
11.2. Block Diagram-2 (Wiring diagram)------------------ 73
11.3. Block Diagram-3 (Power Supply)-------------------- 74
11.4. Explanation of Connector------------------------------ 76
12 Schematic Diagram -------------------------------------------- 79
12.1. CONTROL Board---------------------------------------- 80
12.1.1. For KV-S1027C, KV-SL1056, SL1055,
SL1036, SL1035 ------------------------------------ 80
12.1.2. For KV-S1057C and KV-SL1066---------------- 94
12.2. LCD PANEL Board (KV-S10xxC)-------------------110
12.3. PANEL SWITCH Board (KV-S10xxC)------------- 111
12.4. PANEL Board (KV-SL10xx) --------------------------112
12.5. SENSOR Board-----------------------------------------113
12.5.1. ULTRASONIC SENSOR (G) Board-----------113
12.5.2. DOOR DETECTION Board----------------------114
12.5.3. PAPER SENSOR Board -------------------------115
12.5.4. STARTING SENSOR Board --------------------116
12.5.5. AUTO-MANUAL DETECTION Board---------118
13 Printed Circuit Board-----------------------------------------119
13.1. CONTROL Board---------------------------------------120
13.1.1. For KV-S1027C, KV-SL1056,SL1055,
SL1036,SL1035------------------------------------120
13.1.2. For LV-S1057C and KV-SL1066 ---------------122

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13.2. LCD PANEL Board (KV-S10xxC)-------------------124
13.3. PANEL SWITCH Board (KV-S10xxC)-------------125
13.4. PANEL Board (KV-SL10xx)--------------------------125
13.5. SENSOR Board-----------------------------------------126
13.5.1. ULTRASONIC SENSOR (G) Board-----------126
13.5.2. DOOR DETECTION Board---------------------126
13.5.3. PAPER SENSOR Board ------------------------126
13.5.4. STARTING SENSOR Board -------------------127
13.5.5. AUTO-MANUAL SENSOR Board-------------127
14 Exploded View and Replacement Parts List ---------128
14.1. Exterior----------------------------------------------------129
14.2. Top Cover Assembly-----------------------------------131
14.3. Feed Tray Assembly-----------------------------------133
14.4. Upper Chassis-------------------------------------------135
14.5. Lower Chassis 1----------------------------------------137
14.6. Lower Chassis 2----------------------------------------139
14.7. Screw------------------------------------------------------141
14.8. Packing----------------------------------------------------142
14.9. Tool---------------------------------------------------------144
14.10. CONTROL Board---------------------------------------145
14.10.1. KV-S1027C------------------------------------------145
14.10.2. KV-S1057C------------------------------------------152
14.10.3. KV-SL1056 ------------------------------------------162
14.10.4. KV-SL1066 ------------------------------------------169
14.11. LCD PANEL Board-------------------------------------178
14.12. PANEL SWITCH Board-------------------------------178
14.13. PANEL Board (KV-SL10xx ONLY) -----------------178
14.14. SENSOR Board-----------------------------------------179
14.14.1. ULTRASONIC SENSOR (G) Board-----------179
14.14.2. DOOR DETECTION Board ---------------------179
14.14.3. PAPER SENSOR Board -------------------------179
14.14.4. STARTING SENSOR Board --------------------179
14.14.5. AUTO-MANUAL DETECTION Board---------179
15 Appendix---------------------------------------------------------180

4
1 Safety Precautions
1. Before servicing, unplug the power cord to prevent electrical shock hazard.
2. When replacing parts, use only manufacture’s recommended components for safety.
3. Check the condition of power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the wire dressing, insulation barriers, insulation papers, shields, etc.
1.1. Standard for Repair Service
Repair service shall be provided in accordance with repair technology information such as service manual
so as to prevent fires, injury or electric shock, which can be caused by improper repair work.
1. When performing repairs, neither the products nor its parts or components shall be modified.
2. If cable assembly is supplied as the smallest unit when servicing, make sure to replace
the cable assembly.
1.2. For Service Technicians
ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help to prevent recurring malfunctions.
1. Cover the plastic parts with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not grasp IC or LSI pins with bare fingers.
1.3. About Lead Free Solder (PbF: Pb free)
Note
•In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that con-
tains lead.
•We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn), Silver
(Ag), and Copper (Cu).
•This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder.
Distinction of PbF PCB
•PCBs (manufactured) using lead free solder will have a PbF stamp on the PCB.
Caution
•PbF solder has a melting point that is 50 - 70 F, (30 - 40 C) higher than Pb solder.
Please use a soldering iron with temperature control and adjust it to 700 ±20 F (370 ±10 C).
• Exercise care while using higher temperature soldering irons.: Do not heat the PCB for too long time in order to
prevent solder splash or damage to the PCB.
•PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 F (600 C).
•When applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto
the opposite side (See figure below)

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1.3.1. Suggested Pb free solder
We recommend you to use the following solder when re-soldering components for repair. Before using other Pb free solder than the
following solder, make sure to confirm that the solder maker (you use) has the license agreement for Pb free solder.
Supplier: Senju Metal Industry Co., Ltd. (http://www.senju-m.co.jp)
Part Description in Senju: EcoSolder RMA02 P3 M705 Series
1.4. About RoHS
This product is fully compliant with the national laws transposed from the EU Directive on the restriction of the use of certain
hazardous substances (RoHS) in electrical and electronic equipment, effective 1st July 2006 in the EU countries.
In order for the product to comply with the RoHS Directive, the six particular substances (lead, mercury, cadmium, hexavalent
chromium, polybrominated biphenyls, and polybrominated diphenyl ethers) have been either totally eliminated or limited to the
concentration level below maximum allowed. Consequently spare parts have been changed to RoHS-compliant parts where
applicable.
Due to spare parts application of RoHS legislation, non-compliant spare parts cannot be used to repair compliant products put on
the EU market on or after 1st July 2006. Please therefore make sure to order and use RoHS-compliant spare parts listed in this
manual.

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2 Specifications
Scanning
Item KV-S1057C
KV-SL1066
KV-S1027C
KV-SL1056 KV-SL1055 KV-SL1036 KV-SL1035
Scanning face Duplex
Scanning method Color CIS (600 dpi) Background : Black ＆White
Scanning size 216 mm (8.5 in.)
Scanning
speed
*1
A4 / Letter
Simplex
Binary / color
(200 dpi, 300 dpi)
65
pages/min.
45
pages/min.
40
pages/min.
35
pages/min.
30
pages/min.
A4 / Letter
Duplex
Binary / color
(200 dpi, 300 dpi)
130
images/min.
90
images/min.
80
images/min.
70
images/min.
60
images/min.
Scanning resolution
100 – 600 dpi (1 dpi step)
1,200 dpi (Interpolated)
Optical: 300 dpi / 600 dpi (Automatic switch)
Paper
*2
Width 48 – 216 mm (1.9 – 8.5 in.)
Length
*3
When feeding one sheet: 54 mm – unlimited (2.1 in. – unlimited)
When feeding multiple sheets: 54 – 356 mm (2.1 – 14 in.)
Thickness 0.04 – 0.5 mm (1.6 – 19.7 mils)
Note: 1 mil = 0.001 in.
Weight 20 – 413 g/m² (5 – 110 lb.)
Feed capacity
The height of all the documents on the tray should be less than 10 mm (0.4 in.).
130 sheets (64 g/m² [17 lb.] High-quality woodfree paper)
100 sheets (75 g/m² [20 lb.] High-quality woodfree paper)
100 sheets (80 g/m² [21 lb.] High-quality woodfree paper)
Card
*4
Format ISO format
Size 85.6 x 54 mm (3.4 x 2.1 in.)
Thickness 0.76 mm (0.03 in.)
Feed capacity 3 cards on the feed tray or on the mixed batch card guide
*5
sheetsRoller replacement 250,000
Tonal Gradation Binary, Grayscale, Color, MultiStreamTM (Binary and Color, Binary and Grayscale,
MultiStream is a trademark of EMC Corporation)
•dpi: dots per inch
*1
The scanning speed differs depending on the host computer, the operating system, the application, the measuring method, the quantity of data in
the image, and the paper type. The scanning speed depends on a measuring method of Panasonic.
*2
For details, see "Compatible Paper Types".
*3
Using "Long Paper", you can scan long documents by splitting them into smaller parts. For details about "Long Paper", refer to the Image Capture
Plus, TWAIN, or ISIS help.
*4
For details, see "Compatible Card Types".
*5
For details, see "Replacing the Rollers".
"Weight in pounds" of paper represents the weight of 500 (432 x 559 mm [17 x 22 in.]) sheets.
Image Control
Auto preview, Auto rescan, Automatic Brightness Adjustment,Multi Color Drop Out,
Dynamic Threshold, White Level From Paper,Image Emphasis, Gamma, Automatic
Separation, Noise Reduction
Compression MH, MMR, JPEG (Color, Grayscale)
(See 4.7. Setting Documents and/or Card (P.15).)
(See 15. Appendix (Operating Manual P.60).)
(See 15. Appendix (Operating Manual P.23).)

7

8
Model Suffix and serial No.
Model Area Serial No.
KV-S1057C-M USA/ Canada G47XXXX1001
KV-S1027C-M USA/ Canada G50XXXX1001
KV-S1057C-J USA/ Canada G48XXXX1001
KV-S1027C-J USA/ Canada G51XXXX1001
KV-S1057C-U Europe G46XXXX1001
KV-S1027C-U Europe G49XXXX1001
KV-SL1066-B Brazil G54XXXX1001
KV-SL1056-B Brazil G59XXXX1001
KV-SL1066-CN China G56XXXX1001
KV-SL1056-CN China G61XXXX1001
KV-SL1055-CN China G62XXXX1001
KV-SL1036-CN China G63XXXX1001
KV-SL1035-CN China G64XXXX1001
KV-SL1066-K Korea G55XXXX1001
KV-SL1056-K Korea G60XXXX1001
KV-SL1066-M Mexico G53XXXX1001
KV-SL1056-M Mexico G58XXXX1001
KV-SL1066-U Europe/ Russia/ Turkey/ Africa/Asia/ South America/ Middle East G52XXXX1001
KV-SL1056-U Europe/ Russia/ Turkey/ Africa/Asia/ South America/ Middle East G57XXXX1001

9
3 Location of Controls and Components
3.1. Main Unit

10

11
3.2. Operation Panel and LED Indicators
KV-S1057C and KV-S1027C
1 2 3 4 5 6
7 8
KV-SL1066, KV-SL1056, KV-SL1055, KV-SL1036 and KV-SL1035
1 2 3 54 6
9
LED (Red)
Lights when an error occurs.
LED (Green)
Shows the scanner’s status.
Power button
Press the power button for more than one second to turn the unit off.
Cursor button
Skip button
If you press this button after a double feed is detected and scanning has been paused, the document
(or documents) detected as a double feed will be scanned, and then ejected from the scanner.
Scanning will continue after the document is scanned and ejected.
1
2
3
4
5
Start/Stop button
•If you set [Wait Key] for "Manual Feed Mode" in your application software, pushing this button
starts scanning. For details about "Manual Feed Mode", refer to the Image Capture Plus,
TWAIN, or ISIS help.
•During scanning, pushing this button stops scanning.
•If you press this button after a double feed is detected and scanning has been paused, the
document (or documents) detected as a double feed will be ejected from the scanner without
being scanned. Scanning will stop.
6

12
3.3. About LED
The status of the scanner is displayed by the LED (Red) ( ) and the LED (Green) ( ), as shown in the
table below:
LED (Red) LED (Green) Status
OFF OFF Power OFF*1
OFF ON Ready mode or Scanning
OFF Blinking (Slow, Long ON) Sleep mode*2
Blinking (Slow) ON Warning
ON OFF Error*3
OFF Blinking (Fast) Warming up
OFF Blinking (Fast, 2 times consecutively) Double Feed Skip mode
*1
If the power off feature in sleep mode is enabled, and if no operation is performed for a certain period of time, the scanner will be
turned off automatically. Press the power button of the scanner to turn it on. You can enable/disable the power off feature, and change
the time until the scanner turns off in User Utility.
*2
If no operation is performed for 15 minutes or longer, the scanner will enter sleep mode automatically to conserve energy. Press any
button (except the power button) on the scanner’s operation panel to return to ready mode. The time until the scanner enters sleep
mode can be changed in User Utility.
*3
For details about the error, refer to "Error Messages (KV-S1057C and KV-S1027C only)" or check in User Utility.
1 2
1 2

13
4 Installation Instructions
4.1. Minimum Space Requirements
Be sure to maintain the recommended space requirements for proper ventilation.
Refer to the concerned pages of Operating Manual (See 15. Appendix (Operating Manual P.17).)
4.2. Included Accessories
Confirm that the following items are included with this scanner.
Refer to the concerned pages of Operating Manual (See 15. Appendix (Operating Manual P.11).)
4.3. System Requirements
When using the scanner, the system requirements are as follows:
Note 1
• The above system requirements may not satisfy the requirements of all operating systems.
• The scanning speed differs depending on the host computer's operating environment or the application used.
• Due to the slower speed of USB 1.1, it is recommended to use a USB 2.0 / USB 3.0 interface.
• If you connect the scanner to a USB hub, it is not guaranteed to work.
• To use SharePoint Output with Image Capture Plus, Microsoft®. NET Framework 4.0 or later must be installed.
Please install Microsoft®. NET Framework 4.0 or later.
• To use the scanner in a Windows®8 and USB 3.0 environment, perform Windows Update before installing the soft-
ware stored on the Software / Manual CD-ROM.
Trademarks
•Microsoft®, Windows®, Windows Vista®, Windows Server, and Internet Explorer®are either registered trademarks
or trademarks of Microsoft Corporation in the United States and/or other countries.
• IBM and AT are trademarks of International Business Machines Corporation in the United States, other countries, or
both.
• Intel and Intel Core are trademarks of Intel Corporation in the U.S. and other countries.
• All other trademarks identified herein are the property of their respective owners.
4.4. Installing Driver and Software
Following the instructions in the scanner’s Operating Manual (See 15. Appendix (Operating Manual P.18), install the scanner driver
and software that is included on the enclosed CD-ROM.
For CD-ROM Contents, Refer to Operating Manual (See 15. Appendix (Operating Manual P.5).)
Computer IBM®PC/AT or compatible machine with a CD-ROM drive
CPU Intel®CoreTM i5, 2.5 GHz or higher
Operating System Microsoft®Windows XP®operating system SP3 or later
Microsoft®Windows Vista®operating system SP2 or later
Microsoft®Windows®7 operating system
Microsoft®Windows®8 operating system
Microsoft®Windows Server®2003
Microsoft®Windows Server®2008
Microsoft®Windows Server®2012
Web Browser Microsoft®Internet Explorer®6.0 or later
Interface USB 2.0 / USB 3.0
Memory 4 GB or higher
Hard Disk 5 GB or more free space is required.

14
4.5. Connecting the Unit to a Personal Computer
Connect the Power Cord (B) (except KV-SL10xx-CN), then insert the plug of the cord in the AC outlet.
Then connect the unit to a computer with the USB Cable (A).
Caution
1. Only use the Power Cord and USB Cables included with this scanner.
2. Do not connect more than 1 flatbed scanner to the same computer.
(Otherwise, the flatbed scanner you would like to use may not operate.)
3. Be sure to connect the scanner directly to the USB interface port on the PC.
If you connect the scanner to a USB hub, it is not guaranteed to work.
4. During long periods of non-use, conserve power by unplugging the Power Cord from the outlet.
While plugged in, this unit consumes 0.5 W or less of power.
4.6. Installing the Unit
Refer to the concerned pages of Operating Manual (Refer to 15. Appendix (Operating Manual P.20).)
(B)
To AC outlet
Computer
(A)

15
4.7. Setting Documents and/or Card
Case 1: When scanning paper documents only.
Set the paper documents on the Feed Tray.
Case 2: When scanning cards only.
Set the cards on the Feed Tray.
Case 3: When scanning paper documents and a card at the same time.
Set the paper documents on the Feed Tray, and set the card on the Mixed Batch Card Guide.
Note:
*1: The height of all the documents should be less than 10.0 mm (0.4 in.)
Refer to the “Compatible Paper Type” of the Operating Manual (See 15. Appendix (Operating Manual P.23).)
*2: The height of the cards should be less than 5.0 mm (0.2 in.)
*3: The height of all the documents should be less than 2mm (0.08 in.)
(This is equivalent to about 20 sheets at 80 g/m2 or 20 lb.)
*4: When using the Mixed Batch Card Guide, the document guides can not be adjusted to a width
smaller than A5.
*5: ISO format card
Size: 85.6 x 54.0 mm (3.4 x 2.1 in.), Thickness: 0.76 mm (0.03 in.)
- Embossed card is also supported.
When scanning embossed cards, it is recommended to place them in landscape orientation with the side to
be scanned facing up.
- Ensure that the embossed portions of cards do not stick together.
- Use the landscape orientation when scanning an embossed card. If the scanning fails, place the card
upside down, and then try again.
*6: Available only by using Mixed Batch Card Guide
- Set the card in landscape orientation.
The card set on the Mixed Batch Card Guide is fed after completing the paper document scanning.
Scanning Condition Capacity
Documents Cards
Mixed scanning (Paper and Card) *6 20 sheets *3 *4 3 cards *3 *4
Paper (80 g/m2 or 20lb.) Only 100 sheets *1 -
Card *5 Only - 3 cards *2

16
5 Section Views
5.1. Motor
5.2. Roller

17
5.3. Board and Sensor

18
6 Mechanical Function
6.1. Paper Feed Mechanism
Fig. 6.1
1. When the document is set on the Feed Tray, and is detected by the Paper Sensor, the scanning command from the PC will
start the Conveyor Motor, which will move down the Document Stage and open the Gate, and rotate the Paper Feed Roller,
Conveyor Roller, and Exit Roller in the direction of the arrows.
2. When the document enters the separation section inside the paper feed section, the Double Feed Prevention Roller (sup-
ported by a shaft fixed via a torque limiter) exerts force onto the document, which depends on the set torque.
When the paper is fed continuously, the 1st document is separated from the 2nd or more documents by this force, and is fed
to the scanning section.
If a Double Feed occurs when Double Feed detection mode has been set in the scanning software, the scanner will stop the
scanning process.
3. When the leading edge of the document advances to the Conveyor Roller position, the document is fed at a speed that is 2.3
times as fast as the speed of the Paper Feed position.
4. When the leading edge of the document is detected by the Starting Sensor, scanning will start after a certain period of time
determined by the scanner.
Pickup Arm
Gate Lock Lever
Paper Sensor
Double Feed
Detector[Generate]
Free Roller
Free Roller
CIS [B]
Reference Plate [F]
Exit Roller
CIS [F]
Starting Sensor
Control Board
Conveyor Motor
Power Supply
Conveyor Roller
DoubleFeed
Detector[Receive]
Paper Feed Roller
Document Stage
Gate
Double Feed
Prevention Roller
Paper Feed Direction

19
5. When the trailing edge of the document passes through the separation section, the continuous rotation of the Paper Feed
Roller during scanning, enables the next document to be fed.
(A difference in the rotation speeds of the Conveyor Roller and Paper Feed Roller creates a distance between the1st docu-
ment and the 2nd.)
6. The steps 2 to 5 above are repeated.
7. When the Paper Sensor detects no further documents, and the Starting Sensor detects the trailing edge of the document, the
Conveyor Motor will stop rotating after a certain period of time determined by the scanner to end the scanning sequence.
8. After the conveyor motor stopped, by opposite rotation of the Conveyor Motor, the Document Stage is moved up and the
Gates are closed.
Note:
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. When enough free buffer space is secured again, the scanner resumes the scan-
ning process.

20
6.2. Sensor Mechanism
6.2.1. Paper Sensor
The Paper Sensor turns ON when the document is properly placed on the Feed Tray to push the arm up away from the sensor.
6.2.2. Starting Sensor
The Starting Sensor turns ON when the document is fed to the scanning-start position to obstruct the light axis line of the sensor.
6.2.3. Door Detector
The Door Detector turns OFF when the ADF Door is closed to block the detector with the claw.
Paper Sensor Paper Sensor
Paper Feed Direction Paper Feed Direction
Right Side View
Feed Side ViewRight Side View
Paper Feed Direction
Starting Sensor[Generate]
Starting Sensor[Receive]
Left Side View
Door Detector Door Detector
Door Open
Claw