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1 Safety Precautions -----------------------------------------------4

1.1. For Service Technicians  ---------------------------------4

2 Warning --------------------------------------------------------------5

2.1. Caution--------------------------------------------------------5
2.2. About Lead Free Solder (PbF: Pb free) --------------5

2.2.1. Suggested PbF Solder -------------------------------6

3 Specifications ------------------------------------------------------7
4 Location of Controls and Components--------------------9

4.1. Main Unit -----------------------------------------------------9

4.1.1. Front ------------------------------------------------------9
4.1.2. Rear----------------------------------------------------- 10

4.2. Operation Panel ------------------------------------------ 11

4.2.1. About LED--------------------------------------------- 12

5 Installation Instructions--------------------------------------- 13

5.1. Required Space Around the Scanner --------------- 13
5.2. Included Accessories------------------------------------ 13
5.3. Installing the Unit ----------------------------------------- 13
5.4. Viewing Operating Manual and Help Installed ---- 13
5.5. System Requirements ---------------------------------- 13
5.6. Installing the Software ---------------------------------- 14
5.7. Uninstalling the Software------------------------------- 14
5.8. Setting Documents and/or Card---------------------- 14

6 SECTIONAL VIEWS--------------------------------------------- 15

6.1. CIS and Motor--------------------------------------------- 15
6.2. Rollers------------------------------------------------------- 15
6.3. Boards and Sensors------------------------------------- 16

7 MECHANICAL FUNCTION ------------------------------------ 17

7.1. Paper Feed Mechanism (Auto feeding Mode) ---- 17
7.2. Paper Feed Mechanism (Manual feeding

Mode) ------------------------------------------------------- 18

7.3. Sensor Mechanism -------------------------------------- 19

7.3.1. Paper Sensor----------------------------------------- 19
7.3.2. Starting Sensor--------------------------------------- 19
7.3.3. Feed Select Sensor--------------------------------- 19
7.3.4. Door Detector ---------------------------------------- 20

8 Disassembly and Assembly Instructions--------------- 21

8.1. Disassembly Flowchart --------------------------------- 21
8.2. Exterior------------------------------------------------------ 24

8.2.1. Side Cover (R) --------------------------------------- 24
8.2.2. Side Cover (L)---------------------------------------- 25
8.2.3. Rear Cover-------------------------------------------- 25
8.2.4. Exit Tray Assy ---------------------------------------- 26
8.2.5. Front Cover ------------------------------------------- 26

8.3. Upper Chassis -------------------------------------------- 27

8.3.1. DFP Roller -------------------------------------------- 27
8.3.2. Top Cover --------------------------------------------- 27
8.3.3. PANEL Board----------------------------------------- 27
8.3.4. ULTRASONIC SENSOR (G) Board ------------ 28
8.3.5. Free Roller -------------------------------------------- 28
8.3.6. CIS (B) ------------------------------------------------- 29
8.3.7. Wiring of Upper Chassis--------------------------- 29

8.4. Lower Chassis -------------------------------------------- 30

8.4.1. Bottom Cover----------------------------------------- 30
8.4.2. Bottom Plate ------------------------------------------ 30
8.4.3. CONTROL Board------------------------------------ 31
8.4.4. PAPER SENSOR Board--------------------------- 31
8.4.5. CONTROL Board’s Box --------------------------- 32
8.4.6. FAN ----------------------------------------------------- 32

8.4.7. DOOR DETECTION Board----------------------- 32
8.4.8. STARTING SENSOR Board --------------------- 33
8.4.9. ULTRASONIC SENSOR (R) Board ------------ 33

8.4.10. CIS (F) ------------------------------------------------- 34

8.4.11. Side Plate Assembly ------------------------------- 34

8.4.12. Conveyor Motor ------------------------------------- 35
8.4.13. Conveyor Roller ------------------------------------- 36
8.4.14. Exit Roller --------------------------------------------- 37
8.4.15. Paper Feed Roller ---------------------------------- 38
8.4.16. Wiring of Lower Chassis -------------------------- 38

8.5. Required Adjustments after Part Replacement -- 39

9 Maintenance------------------------------------------------------ 40

9.1. Maintenance Chart -------------------------------------- 40
9.2. Cleaning---------------------------------------------------- 40
9.3. Replacing Limited Life Parts -------------------------- 40

10 Service Utility & Service Mode ----------------------------- 41

10.1. Main Menu Indication for Service Utility ----------- 41
10.2. List of Functions for Service Utility ------------------ 42
10.3. Operation -------------------------------------------------- 43

10.3.1. Scanner Status -------------------------------------- 43
10.3.2. Error Code -------------------------------------------- 44
10.3.3. Error Log ---------------------------------------------- 45
10.3.4. Scanner Information-------------------------------- 45
10.3.5. Scanner Counter ------------------------------------ 45
10.3.6. Scanner Condition ---------------------------------- 46
10.3.7. Test ----------------------------------------------------- 48
10.3.8. Adjustment-------------------------------------------- 52
10.3.9. Other --------------------------------------------------- 53

10.4. Service Mode --------------------------------------------- 54

11 TROUBLESHOOTING ----------------------------------------- 55

11.1. Troubleshooting -1 (when no error message is

displayed on PC)----------------------------------------- 55

11.2. Troubleshooting-2 (when an error message is

displayed on PC)----------------------------------------- 58

12 CIRCUIT DIAGRAM--------------------------------------------- 66

12.1. Block Diagram-1 (Image Processing) -------------- 66
12.2. Block Diagram-2 (Boards) ----------------------------- 68
12.3. Block Diagram-3 (Power Supply)-------------------- 69
12.4. Explanation of Connector------------------------------ 70

13 Schematic Diagram -------------------------------------------- 73

13.1. CONTROL Board ---------------------------------------- 74

13.1.1. No.1 ---------------------------------------------------- 74
13.1.2. No.2 ---------------------------------------------------- 75
13.1.3. No.3 ---------------------------------------------------- 76
13.1.4. No.4 ---------------------------------------------------- 77
13.1.5. No.5 ---------------------------------------------------- 78
13.1.6. No.6 ---------------------------------------------------- 79
13.1.7. No.7 ---------------------------------------------------- 80
13.1.8. No.8 ---------------------------------------------------- 81
13.1.9. No.9 ---------------------------------------------------- 82

13.1.10. No.10--------------------------------------------------- 83

13.1.11. No.11--------------------------------------------------- 84

13.2. SENSOR Board ------------------------------------------ 85

13.2.1. PANEL Board ---------------------------------------- 85
13.2.2. DOOR DETECTION Board----------------------- 86
13.2.3. PAPER SENSOR Board -------------------------- 87
13.2.4. STARTING SENSOR Board --------------------- 88

14 CIRCUIT BOARD ------------------------------------------------ 89

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14.1. CONTROL Board-----------------------------------------90

14.1.1. Front Side----------------------------------------------90
14.1.2. Back Side ----------------------------------------------91

14.2. SENSOR Board-------------------------------------------92

14.2.1. PANEL Board -----------------------------------------92
14.2.2. DOOR DETECTION Board -----------------------92
14.2.3. PAPER SENSOR Board ---------------------------93
14.2.4. STARTING SENSOR Board ----------------------93

15 Exploded View and Replacement Parts List -----------95

15.1. Exterior ------------------------------------------------------96
15.2. Upper chassis ---------------------------------------------98
15.3. Lower chassis ------------------------------------------- 100
15.4. Packing---------------------------------------------------- 102
15.5. Screw ------------------------------------------------------ 104
15.6. Tool--------------------------------------------------------- 105
15.7. CONTROL Board--------------------------------------- 106
15.8. Sensor Board -------------------------------------------- 113

15.8.1. PANEL Board --------------------------------------- 113
15.8.2. DOOR DETECTION Board --------------------- 113
15.8.3. PAPER SENSOR Board ------------------------- 113
15.8.4. STARTING SENSOR Board -------------------- 113

16 Appendix --------------------------------------------------------- 114

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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.

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The power socket wall outlet should be located near this equipment and be easily accessible.

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that 
contains 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. 

• 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 which may flow onto the 

opposite side (See figure, below).