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1 GENERAL PRECAUTIONS -------------------------------------4

1.1. Safety Precautions-----------------------------------------4
1.2. Electrical Tests ----------------------------------------------4
1.3. Standard for Repair Service -----------------------------4
1.4. For Service Technicians ----------------------------------5
1.5. About Lead Free Solder (PbF: Pb free) --------------5
1.6. About RoHS -------------------------------------------------5

2 SPECIFICATIONS -------------------------------------------------6

2.1. KV-S4085CL/ S4085CW Series ------------------------6
2.2. KV-S4065CL/ S4065CW Series ------------------------8

3 COMPONENT IDENTIFICATION ---------------------------- 10

3.1. Name of Each Part--------------------------------------- 10
3.2. Control Panel---------------------------------------------- 11

4 INSTALLATION --------------------------------------------------- 12

4.1. Minimum Space Requirements ----------------------- 12
4.2. DIMM Module Extension ------------------------------- 13
4.3. Installing DIMM Modules ------------------------------- 15
4.4. Connecting the Scanner to a Personal

Computer--------------------------------------------------- 16

4.5. System Requirements ---------------------------------- 17
4.6. Installing Driver and Software------------------------- 17

5 SECTIONAL VIEWS--------------------------------------------- 18

5.1. CIS and Motors ------------------------------------------- 18
5.2. Rollers------------------------------------------------------- 19
5.3. Boards ------------------------------------------------------ 20

6 MECHANICAL FUNCTION ------------------------------------ 21

6.1. Paper Feed Mechanism-1 (In case of

scanning standard or thin paper in the Auto
mode) ------------------------------------------------------- 21

6.2. Paper Feed Mechanism-2 (In case of

scanning thick paper on the Auto-Feed mode) --- 22

6.3. Pressure Detection of Paper Feed Roller ---------- 23
6.4. ADF Mechanism------------------------------------------ 24
6.5. Slip Detection of Paper Feed Block ----------------- 25
6.6. Hopper Mechanism -------------------------------------- 26

7 MAINTENANCE -------------------------------------------------- 27

7.1. Maintenance Chart--------------------------------------- 27
7.2. Cleaning ---------------------------------------------------- 28
7.3. Replacing Limited Life Parts--------------------------- 34

8 DISASSEMBLY INSTRUCTIONS---------------------------- 36

8.1. Disassembly Flowchart --------------------------------- 36
8.2. Exterior and Hopper Block ----------------------------- 39
8.3. Mechanical Block----------------------------------------- 50
8.4. Board Assembly ------------------------------------------ 75

9 SERVICE UTILITY & SELF TEST --------------------------- 94

9.1. Main Menu Indication for Service Utility ------------ 94
9.2. List of Functions for Service Utility------------------- 95
9.3. Operation--------------------------------------------------- 97
9.4. Scanner Self-test ----------------------------------------113

10 TROUBLESHOOTING ---------------------------------------- 116

10.1. Troubleshooting-1 (with no error message on

PC)----------------------------------------------------------116

10.2. Troubleshooting-2 (with an error message on

PC)----------------------------------------------------------117

10.3. Requirement After Parts Replacement ----------- 143

11 CIRCUIT DESCRIPTION ------------------------------------- 144

11.1. Block Diagram-1 (Image Processing) ------------- 144
11.2. Block Diagram-2 (Board) ----------------------------- 145

11.3. Explanation of Connector----------------------------- 146

12 SCHEMATIC DIAGRAM -------------------------------------- 158

12.1. CONTROL Board --------------------------------------- 159
12.2. RELAY (LOWER) Board ------------------------------ 191
12.3. RELAY (UPPER) Board------------------------------- 192
12.4. DOUBLE FEED DETECTOR L Board------------- 194
12.5. DOUBLE FEED DETECTOR C Board ------------ 195
12.6. DOUBLE FEED DETECTOR R Board ------------ 196
12.7. SLIP DETECTOR SENSOR RELAY Board------ 197
12.8. PANEL Board -------------------------------------------- 198
12.9. POINTER Board ---------------------------------------- 199

12.10. PAPER JAM SENSOR Board ----------------------- 200

12.11. POST-IMPRINTER DOOR Board ------------------ 201

12.12. EXIT SENSOR Board --------------------------------- 202
12.13. HOPPER HOME Board ------------------------------- 203
12.14. DFP HOME Board-------------------------------------- 204
12.15. DOUBLE FEED DETECTOR LCR Board -------- 205
12.16. BENT PAPER L (S) SENSOR Board -------------- 206
12.17. BENT PAPER L (R) SENSOR Board-------------- 207
12.18. BENT PAPER R (S) SENSOR Board ------------- 208
12.19. BENT PAPER R (R) SENSOR Board ------------- 209
12.20. STARTING SENSOR Board ------------------------- 210
12.21. DRIVE Board -------------------------------------------- 211
12.22. AFE (F) Board, AFE (B) Board ---------------------- 216
12.23. LED DRIVE Board (Only for KV-S4065CL /

S4065CW Series) -------------------------------------- 220

12.24. POWER Board ------------------------------------------ 221

13 CIRCUIT BOARD ----------------------------------------------- 222

13.1. CONTROL Board --------------------------------------- 223
13.2. RELAY (LOWER) Board ------------------------------ 225
13.3. RELAY (UPPER) Board------------------------------- 225
13.4. DOUBLE FEED DETECTOR L Board------------- 225
13.5. DOUBLE FEED DETECTOR C Board ------------ 226
13.6. DOUBLE FEED DETECTOR R Board ------------ 226
13.7. SLIP DETECTOR SENSOR RELAY Board------ 226
13.8. PANEL Board -------------------------------------------- 227
13.9. POINTER Board ---------------------------------------- 227

13.10. PAPER JAM SENSOR Board ----------------------- 228

13.11. POST-IMPRINTER DOOR Board ------------------ 229

13.12. EXIT SENSOR Board --------------------------------- 229
13.13. HOPPER HOME Board ------------------------------- 230
13.14. DFP HOME Board-------------------------------------- 231
13.15. DOUBLE FEED DETECTOR LCR Board -------- 231
13.16. BENT PAPER L (S) SENSOR Board -------------- 231
13.17. BENT PAPER L (R) SENSOR Board-------------- 231
13.18. BENT PAPER R (S) SENSOR Board ------------- 232
13.19. BENT PAPER R (R) SENSOR Board ------------- 232
13.20. STARTING SENSOR Board ------------------------- 232
13.21. DRIVE Board -------------------------------------------- 233
13.22. AFE (F) Board, AFE (B) Board ---------------------- 233
13.23. LED DRIVE Board (Only for KV-S4065CL /

S4065CW Series) -------------------------------------- 234

13.24. POWER Board ------------------------------------------ 235

LIST ---------------------------------------------------------------- 236

14.1. Exterior ---------------------------------------------------- 237
14.2. Board Box Unit and others --------------------------- 239
14.3. Sub Chassis --------------------------------------------- 241

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14.4. Main Chassis -------------------------------------------- 247
14.5. Packing---------------------------------------------------- 253
14.6. Tool--------------------------------------------------------- 254

15 REPLACEMENT PARTS LIST  ----------------------------- 255

15.1. CONTROL Board--------------------------------------- 255
15.2. RELAY (LOWER) Board ------------------------------ 281
15.3. RELAY (UPPER) Board------------------------------- 284
15.4. DOUBLE FEED DETECTOR L Board ------------ 288
15.5. DOUBLE FEED DETECTOR C Board ------------ 288
15.6. DOUBLE FEED DETECTOR R Board ------------ 288
15.7. SLIP DETECTOR SENSOR RELAY Board------ 288
15.8. PANEL Board -------------------------------------------- 288
15.9. POINTER Board ---------------------------------------- 289

15.10. PAPER JAM SENSOR Board ----------------------- 289

15.11. POST-IMPRINTER DOOR Board ------------------ 289

15.12. EXIT SENSOR Board --------------------------------- 289
15.13. HOPPER HOME Board ------------------------------- 289
15.14. DFP HOME Board-------------------------------------- 290
15.15. DOUBLE FEED DETECTOR LCR Board -------- 290
15.16. BENT PAPER L (S) SENSOR Board-------------- 290
15.17. BENT PAPER L (R) SENSOR Board-------------- 290
15.18. BENT PAPER R (S) SENSOR Board ------------- 290
15.19. BENT PAPER R (R) SENSOR Board ------------- 291
15.20. STARTING SENSOR Board ------------------------- 291
15.21. DRIVE Board -------------------------------------------- 291
15.22. AFE Board------------------------------------------------ 295
15.23. LED DRIVE Board (KV-S4065CW KV-

S4065CL)------------------------------------------------- 315

15.24. Power Board --------------------------------------------- 316

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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.

5. Before returning the serviced equipment to the customer, perform the following electrical tests to prevent shock hazard.

1. Unplug the power cord and check for continuity between the earth ground connection on the plug and the metal cabinet.

There should be zero ohm resistance found.

2. With the unit unplugged, short the AC Live-Neutral of the plug with a jumper wire. 
3. Turn ON the power switch.
4. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part, such

as screwheads, etc.
Note
   Some exposed parts may be isolated from the chassis by design. They read infinity.

5. If the measurement is less than 1 M

Ω

, a possibility for electric shock may exit.

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.

5

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

• We will use PbF when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),

• This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and

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

• PbF solder has a melting point that is 50 

°

°

°

°

°

 ± 20 

°

°

 ± 10 

°

• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 

°

°

• When applying PbF solder to double layered boards, please check the component side for excess solder which may

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.