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1 Safety Precautions -----------------------------------------------5

1.1. For Service Technicians  ---------------------------------5
1.2. Insulation Resistance Test -------------------------------6
1.3. AC Caution---------------------------------------------------7

2 Warning --------------------------------------------------------------8

2.1. Caution--------------------------------------------------------8
2.2. About Lead Free Solder (PbF: Pb free) --------------8

2.2.1. Suggested PbF Solder -------------------------------9

3 Specifications ---------------------------------------------------- 10
4 Location of Controls and Components------------------ 12

4.1. Main Unit --------------------------------------------------- 12
4.2. Operation Panel ------------------------------------------ 14

4.2.1. About LED--------------------------------------------- 15

5 Installation Instructions--------------------------------------- 16

5.1. Required Space Around the Scanner --------------- 16
5.2. Included Accessories------------------------------------ 16
5.3. Installing the Unit ----------------------------------------- 16
5.4. Viewing Operating Manual and Help Installed ---- 16
5.5. System Requirements ---------------------------------- 16
5.6. Installing the Software ---------------------------------- 16
5.7. Uninstalling the Software------------------------------- 16

6 Section Views ---------------------------------------------------- 17

6.1. Parts location---------------------------------------------- 17

6.1.1. Paper pass(Motor & Roller) ----------------------- 17
6.1.2. Main chassis(Board & Motor & Sensor) ------- 18
6.1.3. Sub Chassis(Roller & Board & Motor &

Sensor)------------------------------------------------- 19

6.2. PCB Location---------------------------------------------- 20

6.2.1. Right Side --------------------------------------------- 20
6.2.2. Back Side---------------------------------------------- 20

7 Mechanical Function------------------------------------------- 21

7.1. Paper Feed Mechanism (Automatic feeding

mode) ------------------------------------------------------- 21

7.2. Paper Feed Mechanism (Manual feeding

Mode) ------------------------------------------------------- 22

7.3. Pressure Detection of Paper Feed Roller ---------- 23
7.4. ADF Mechanism------------------------------------------ 24
7.5. Hopper Mechanism -------------------------------------- 25
7.6. Bent paper & Staple detect function  ---------------- 26
7.7. Mechanical Deskew Mechanism (KV-S8147,

S8150, S8130 only) ------------------------------------- 27

7.8. Double feed retry function (KV-S8147, S8150,

S8130 only) ------------------------------------------------ 28

7.9. Double feed detect function --------------------------- 29

7.10. JAM sound detect function ---------------------------- 30

7.11. Stacker Mechanism-------------------------------------- 31

8 Disassembly and Assembly Instructions --------------- 32

8.1. Disassembly Flowchart --------------------------------- 32
8.2. Main Chassis Left ---------------------------------------- 35

8.2.1. Left Cover --------------------------------------------- 35
8.2.2. Left Fan ------------------------------------------------ 36
8.2.3. Door Switch ------------------------------------------- 36
8.2.4. Drive Belts and Deskew Assist Drive Belt

(L) ------------------------------------------------------- 37

8.2.5. Drive Roller 1 (L) and Drive Roller 2 (L) ------- 38

8.3. Main Chassis Back -------------------------------------- 39

8.3.1. Rear Cover -------------------------------------------- 39
8.3.2. Power Box--------------------------------------------- 40
8.3.3. Power Boards and Sub Power Board ---------- 41
8.3.4. Conveyor Motor-------------------------------------- 42

8.3.5. CIS (B) Relay Board ------------------------------- 42
8.3.6. Top Cover and Top Plate-------------------------- 43
8.3.7. Exit Motor --------------------------------------------- 44

8.4. Main Chassis Right-------------------------------------- 45

8.4.1. Right Cover------------------------------------------- 45
8.4.2. Top Right Cover ------------------------------------- 46
8.4.3. Panel Ass’y, Panel Board, LCD Board and

LCD----------------------------------------------------- 47

8.4.4. Control Board Cover, Control Board and

Control Box ------------------------------------------- 49

8.4.5. Drive Board Cover, Drive Board and Drive

Box ----------------------------------------------------- 50

8.4.6. Rear Fan ---------------------------------------------- 51
8.4.7. Platen Home Sensor Board ---------------------- 51
8.4.8. Background Plate Motor -------------------------- 51
8.4.9. PCB Angle Bracket (2) ---------------------------- 52

8.4.10. Deskew Assist Drive Belt (R) -------------------- 52

8.4.11. Drive Plate Hopper and Hopper Drive Belt --- 53

8.4.12. Drive Roller 1 (R) and Drive Roller 2 (R)------ 53
8.4.13. Sub Right Inner Cover and Right Front

Inner Cover ------------------------------------------- 54

8.4.14. Exit Belt------------------------------------------------ 55

8.5. Main Chassis Center 1 --------------------------------- 56

8.5.1. Holder Plate ------------------------------------------ 56
8.5.2. Deskew Assist Motor (L) / (R) ------------------- 56
8.5.3. DFP Home Sensor Board------------------------- 56
8.5.4. Hopper Motor ---------------------------------------- 56
8.5.5. DFP Pressure Motor ------------------------------- 56
8.5.6. DFP Motor -------------------------------------------- 56

8.6. Main Chassis Center 2 --------------------------------- 57

8.6.1. DFP Roller -------------------------------------------- 57
8.6.2. CIS (B) ------------------------------------------------- 58
8.6.3. Conveyor Lower 2 ---------------------------------- 59
8.6.4. Slip/Starting Sensor Board ----------------------- 59
8.6.5. Lower Relay Board --------------------------------- 59
8.6.6. Conveyor Lower 1 ---------------------------------- 59
8.6.7. Skew Detect Sensor (R) Board------------------ 59
8.6.8. Skew Detect Sensor (L) Board ------------------ 59
8.6.9. Feed Tray --------------------------------------------- 60

8.6.10. Hopper Home Sensor Board--------------------- 60

8.6.11. Paper Sensor ---------------------------------------- 60

8.6.12. Paper Sensor Relay Board ----------------------- 60
8.6.13. Drive Roller 3 ASSY-------------------------------- 61
8.6.14. Outer U-Turn Plate --------------------------------- 62
8.6.15. Drive Roller 4 / 5 / 6 Assy------------------------- 62
8.6.16. Jam Sensor Board---------------------------------- 62
8.6.17. Post-Imprinter Door Sensor Board ------------- 62
8.6.18. Paper Path Select Board-------------------------- 62
8.6.19. Exit Sensor Board ---------------------------------- 63
8.6.20. Exit Roller --------------------------------------------- 63

8.7. Sub Chassis ---------------------------------------------- 64

8.7.1. Paper Feed Roller ---------------------------------- 64
8.7.2. Separation Roller ----------------------------------- 64
8.7.3. CIS (F) ------------------------------------------------- 65
8.7.4. Exit Tray ----------------------------------------------- 66
8.7.5. SUB Stopper Base---------------------------------- 67
8.7.6. SUB Exit Base --------------------------------------- 67
8.7.7. Paper Feed Motor ---------------------------------- 68
8.7.8. Separation Motor------------------------------------ 68
8.7.9. Pre Imprinter Door  Board ------------------------ 68

3

8.7.10. Hopper Upper Limit Sensor Board --------------68

8.7.11. ADF Door Inner Plate (Feed Unit Assy)--------68

8.7.12. Pressure Sensor -------------------------------------68
8.7.13. USS (L) Board ----------------------------------------69
8.7.14. USS (R) / Wait Sensor Board---------------------69
8.7.15. Bent Paper R Sensor Board ----------------------69
8.7.16. Bent Paper S Sensor Board ----------------------69
8.7.17. Exit Guide----------------------------------------------69
8.7.18. Stacker Position Sensor----------------------------69
8.7.19. Stacker Upper Limit Sensor Board --------------69
8.7.20. Stacker Home Sensor Board ---------------------69
8.7.21. Exit Tray Plate ----------------------------------------70
8.7.22. Stacker Motor -----------------------------------------70
8.7.23. CIS (F) Relay Board --------------------------------70
8.7.24. Upper Relay Board ----------------------------------70
8.7.25. Free Roller 1 L / R Assy----------------------------71
8.7.26. Free Roller 2 L / R  Assy ---------------------------71
8.7.27. Free Roller 3 Assy -----------------------------------71
8.7.28. Free Roller 4 Assy -----------------------------------72
8.7.29. Free Roller Exit Assy -------------------------------73

8.8. Wiring--------------------------------------------------------74

8.8.1. Main Chassis Wiring --------------------------------74
8.8.2. Sub Chassis Wiring ---------------------------------76

8.9. Requirement After Parts Replacement--------------77

9 Maintenance-------------------------------------------------------78

9.1. Maintenance Chart ---------------------------------------78
9.2. Cleaning ----------------------------------------------------79
9.3. Replacing Limited Life Parts ---------------------------80

10 Service Utility & Scanner Service Mode -----------------81

10.1. Main Menu Indication for Service Utility ------------81
10.2. List of Functions for Service Utility -------------------82
10.3. Operation ---------------------------------------------------84

10.3.1. Scanner Status ---------------------------------------84
10.3.2. Error Code ---------------------------------------------85
10.3.3. Error Log -----------------------------------------------87
10.3.4. Scanner Information --------------------------------87
10.3.5. Scanner Counter -------------------------------------87
10.3.6. Scanner Condition -----------------------------------88
10.3.7. Test ------------------------------------------------------90
10.3.8. Adjustment --------------------------------------------94
10.3.9. Other ----------------------------------------------------97

10.4. Scanner Service Mode ----------------------------------98

11 Troubleshooting ----------------------------------------------- 100

11.1. Troubleshooting-1 (with no error message on

PC) --------------------------------------------------------- 100

11.2. Troubleshooting-2 (with an error message on

PC) --------------------------------------------------------- 102

12 Block Diagram-------------------------------------------------- 115

12.1. Block Diagram-1 (Image processing)-------------- 115
12.2. Block Diagram -2 (Board) ---------------------------- 116
12.3. Explanation of Connector----------------------------- 117

13 Schematic Diagram ------------------------------------------- 132

13.1. Drive Board ---------------------------------------------- 133
13.2. Control Board-------------------------------------------- 142
13.3. RELAY  Board ------------------------------------------- 155

13.3.1. UPPER RELAY Board ---------------------------- 155
13.3.2. LOWER RELAY Board --------------------------- 158
13.3.3. CIS (F) RELAY Board----------------------------- 160
13.3.4. CIS (B) RELAY Board ---------------------------- 161
13.3.5. PANEL Board --------------------------------------- 162

13.4. LCD Board ----------------------------------------------- 163

13.5. SENSOR Board ---------------------------------------- 164

13.5.1. BENT PAPER R SENSOR Board ------------- 164
13.5.2. BENT PAPER S SENSOR Board ------------- 166
13.5.3. DFP HOME SENSOR Board ------------------- 168
13.5.4. EXIT SENSOR Board ---------------------------- 169
13.5.5. PAPER SENSOR RELAY Board -------------- 170
13.5.6. HOPPER HOME SENSOR Board ------------ 171
13.5.7. HOPPER UPPER LIMIT SENSOR Board -- 172
13.5.8. PAPER PATH SELECT Board ----------------- 173
13.5.9. PLATEN HOME SENSOR Board ------------- 174

13.5.10. POST-LMPRINTER DOOR SENSOR

Board ------------------------------------------------- 175

13.5.11. PRE-IMPRINTER DOOR SENSOR Board - 176

13.5.12. SLIP/STARTING SENSOR Board ------------ 177
13.5.13. STACKER HOME SENSOR Board ----------- 178
13.5.14. STACKER UPPER LIMIT SENSOR Board - 179
13.5.15. JAM SENSOR Board----------------------------- 180

14 Printed Circuit Board ---------------------------------------- 181

14.1. Drive Board ---------------------------------------------- 182
14.2. Control Board ------------------------------------------- 183
14.3. RELAY Board ------------------------------------------- 185

14.3.1. UPPER RELAY Board --------------------------- 185
14.3.2. LOWER RELAY Board--------------------------- 185
14.3.3. CIS (F) RELAY Board ---------------------------- 186
14.3.4. CIS (B) RELAY Board ---------------------------- 186
14.3.5. PANEL Board--------------------------------------- 187

14.4. LCD Board ----------------------------------------------- 188
14.5. SENSOR Board ---------------------------------------- 190

14.5.1. BENT PAPER R SENSOR Board ------------- 190
14.5.2. BENT PAPER S SENSOR Board ------------- 190
14.5.3. DFP HOME SENSOR Board ------------------- 190
14.5.4. EXIT SENSOR Board ---------------------------- 190
14.5.5. PAPER SENSOR RELAY Board -------------- 190
14.5.6. HOPPER HOME SENSOR Board ------------ 191
14.5.7. HOPPER UPPER LIMIT SENSOR Board -- 191
14.5.8. PAPER PATH SELECT SENSOR Board---- 191
14.5.9. PLATEN HOME SENSOR Board ------------- 191

14.5.10. POST-IMPRINTER DOOR SENSOR

Board ------------------------------------------------- 191

14.5.11. PRE-IMPRINTER DOOR SENSOR Board - 191

14.5.12. SLIP/STARTING SENSOR Board ------------ 192
14.5.13. STACKER HOME SENSOR Board ----------- 192
14.5.14. STACKER UPPER LIMIT SENSOR Board - 192
14.5.15. JAM SENSOR Board----------------------------- 192

15 Exploded View and Replacement Parts List --------- 193

15.1. Exterior --------------------------------------------------- 194
15.2. Feed Tray ------------------------------------------------ 196
15.3. Panel ------------------------------------------------------ 198
15.4. Sub Chassis 1 (EXIT TRAY) ------------------------ 199
15.5. Sub Chassis 2 (PAPER FEED)--------------------- 201
15.6. Sub Chassis 3 (OTHERS 1)------------------------- 204
15.7. Sub Chassis 4 (OTHERS 2)------------------------- 206
15.8. Main Chassis 1 (LEFT) ------------------------------- 210
15.9. Main Chassis 2 (CENTER 1)------------------------ 212

15.10. Main Chassis 3 (CENTER 2)------------------------ 214

15.11. Main Chassis 4 (RIGHT 1)--------------------------- 217

15.12. Main Chassis 5 (RIGHT 2)--------------------------- 219
15.13. Screw ----------------------------------------------------- 221
15.14. Packing --------------------------------------------------- 222
15.15. Tool -------------------------------------------------------- 224
15.16. Drive Board ---------------------------------------------- 225

4

15.16.1. KV-S8147/KV-S8150/KV-S8130 --------------- 225
15.16.2. KV-S8127/KV-S8120 ----------------------------- 230

15.17. Control Board ------------------------------------------- 235

15.17.1. KV-S8147-------------------------------------------- 235
15.17.2. KV-S8127-------------------------------------------- 249
15.17.3. KV-S8150-------------------------------------------- 262
15.17.4. KV-S8130-------------------------------------------- 276
15.17.5. KV-S8120-------------------------------------------- 290

15.18. RELAY Board ------------------------------------------- 305

15.18.1. UPPER RELAY Board --------------------------- 305
15.18.2. LOWER RELAY Board --------------------------- 310
15.18.3. CIS (F) RELAY Board ---------------------------- 313
15.18.4. CIS (B) RELAY Board ---------------------------- 313
15.18.5. PANEL Board--------------------------------------- 313

15.19. LCD Board ----------------------------------------------- 315
15.20. SENSOR Board ---------------------------------------- 316

15.20.1. BENT PAPER R SENSOR Board ------------- 316
15.20.2. BENT PAPER S SENSOR Board ------------- 316
15.20.3. DFP HOME SENSOR Board ------------------- 316
15.20.4. EXIT SENSOR Board ---------------------------- 316
15.20.5. PAPER SENSOR RELAY Board -------------- 316
15.20.6. HOPPER HOME SENSOR Board ------------ 316
15.20.7. HOPPER UPPER LIMIT SENSOR Board -- 316
15.20.8. PAPER PATH SELECT Board ----------------- 316
15.20.9. PLATEN HOME SENSOR Board ------------- 316

15.20.10. POST-LMPRINTER DOOR SENSOR Board316

15.20.11. PRE-IMPRINTER DOOR SENSOR Board - 316

15.20.12. SLIP/STARTING SENSOR Board------------- 317
15.20.13. STACKER HOME SENSOR Board ----------- 317
15.20.14. STACKER UPPER LIMIT SENSOR Board - 317
15.20.15. JAM SENSOR Board----------------------------- 317

5

1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent

the customer from being exposed to shock hazards.

• 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 repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.

• ICs and LSIs are vulnerable to static electricity.

When repairing, the following precautions will help prevent recurring malfunctions.

1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.