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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

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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.

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.

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.

• 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.

• PCBs (manufactured) using lead free solder will have a PbF stamp on the PCB.

• 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).

• 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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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

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.