Canon imageFORMULA DR-M140 Service Manual Download

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CONTENTS

COPYRIGHT

CANON ELECTRONICS INC. 2011

CANON DR-M140 FIRST EDITION

CHAPTER 1

GENERAL DESCRIPTION

I. PRODUCT

OUTLINE .............................. 1-1

1. Features.............................................. 1-1
2. Main Specifications ............................. 1-2
3. Precautions ......................................... 1-5

II.

NAME OF PARTS.................................... 1-6

1. Name of Parts ..................................... 1-6

III. USER

OPERATION................................. 1-7

1. Placing Documents ............................. 1-7
2. Scanning ............................................. 1-8
3. Clearing Paper Jams ........................ 1-10

CHAPTER 2

FUNCTIONS & OPERATION

I. OUTLINE ................................................. 2-1

1. Main Configuration.............................. 2-1
2. Feed Path ........................................... 2-2
3. Motor Drive ......................................... 2-3
4. Electrical Circuits ................................ 2-4
5. Timing Chart........................................ 2-5

II. READING

SYSTEM................................. 2-6

1. Reading Unit ....................................... 2-6
2. Shading............................................... 2-7

III. FEED

SYSTEM ....................................... 2-8

1. Feeding Mechanism............................ 2-8
2. Feed Error Detection ........................ 2-11

IV. CONTROL

SYSTEM ............................. 2-13

1. Control Circuits ................................. 2-13
2. Image Processing ............................. 2-15

V. POWER

SUPPLY .................................. 2-17

1. Power Supply.................................... 2-17

VI. LAYOUT OF ELECTRICAL COMPONENTS. 2-18

1. Layout of Electrical Components ...... 2-18

VII. PARTS LAYOUT ON EACH PCB .......... 2-19

1. Control PCB ...................................... 2-19
2. Operation PCB.................................. 2-20

3. Document Sensor PCB.....................2-20

CHAPTER 3

DISASSEMBLY &

REASSEMBLY

I. EXTERNAL

PARTS .................................3-1

1. Upper Cover........................................3-1
2. Bottom Cover / Feed Tray...................3-2
3. Document Eject Tray...........................3-3
4. Straight Path Tray ...............................3-3

II. BASE

UNIT ..............................................3-4

1. Control PCB ........................................3-4
2. Main Motor ..........................................3-5
3. Feed Motor..........................................3-6
4. Registration Roller (Drive)...................3-7
5. Straight Eject Roller (Drive).................3-8

III. UPPER

UNIT .........................................3-10

1. Sensor PCBs ....................................3-10
2. Ultrasonic Drive PCB ........................3-10
3. Follower Roller .................................. 3-11
4. U-Turn Unit........................................3-12
5. Upper Unit.........................................3-13

IV. READING

UNIT .....................................3-14

1. Upper Reading Unit ..........................3-14
2. Upper Reading Guide .......................3-15
3. Lower Reading Unit ..........................3-15
4. Lower Reading Guide .......................3-16

CHAPTER 4

INSTALLATION &

MAINTENANCE

I. INSTALLATION........................................4-1

1. System Requirements.........................4-1
2. Checking the Accessories...................4-1
3. Removing the Packing Material ..........4-2
4. Installing the Software.........................4-2
5. Connecting to a Computer..................4-3
6. Power On ............................................4-3