Canon BJ-W3000 Service Manual page 9

F. Remaining Ink Detection ............................ 2-35
1. Outline .................................................. 2-35
2. Method of detecting remaining ink ....... 2-36
G. Cutter Unit .................................................. 2-38
1. Outline .................................................. 2-38
2. Cutting operation .................................. 2-38
III. BJ CARTRIDGE .............................................. 2-39
A. BJ Cartridge ............................................... 2-39
1. Overview .............................................. 2-39
2. Structure ............................................... 2-39
3. BJ print head ........................................ 2-41
4. Nozzle arrangement ............................. 2-42
B. BJ Print head Drive .................................... 2-43
1. Construction of electric head unit ......... 2-43
2. Print signal ........................................... 2-45
IV. PURGE UNIT .................................................. 2-46
A. Outline ....................................................... 2-46
B. Capping Function ....................................... 2-51
1. Outline .................................................. 2-51
2. Operation ............................................. 2-51
C. Head Cleaning ........................................... 2-52
1. Outline .................................................. 2-52
2. Wiping .................................................. 2-52
DISASSEMBLY AND ASSEMBLY .......................... 3-1
1. List of Main Parts ......................................... 3-2
2. Outline of disassembly and assembly of
main parts .................................................... 3-3
PRECAUTIONS FOR DISASSEMBLY
AND REASSEMBLY .............................................. 3-5
I. EXTERNALS ..................................................... 3-7
A. External Cover ............................................. 3-7
1. Removing the right cover ....................... 3-7
2. Removing the upper cover and
front cover .............................................. 3-7
3. Removing the lower cover ...................... 3-8
4. Removing the front cover switch ............ 3-9
B. Operation Panel ........................................... 3-9
1. Removing the operation panel ............... 3-9
C. Fan ............................................................. 3-10
1. Removing the cooling fan ..................... 3-10
2. Removing the suction fan ..................... 3-12
II. CARRIAGE UNIT ............................................ 3-13
1. Removing the carriage unit .................. 3-13
2. Removing the carriage belt .................. 3-15
3. Installing the carriage belt .................... 3-16
4. Removing the linear scale .................... 3-17
vi v
PREFACE
CHAPTER 3 MECHANICAL SYSTEM
3. Maintenance jet .................................... 2-53
4. Suction ................................................. 2-54
D. Waste Ink Absorber Unit ............................ 2-56
1. Waste ink absorber unit ....................... 2-56
V. FEEDER UNIT ................................................ 2-57
A. Outline ....................................................... 2-57
B. Paper Feed Motor Control ......................... 2-58
1. Outline .................................................. 2-58
2. Operation ............................................. 2-58
C. Feeding Operation ..................................... 2-60
1. Outline .................................................. 2-60
2. Loading paper ...................................... 2-60
3. Paper feeding during printing ............... 2-61
4. Feeding operation ................................ 2-62
5. PE sensor ............................................. 2-62
VI. FAN .................................................................. 2-63
VII. POWER SUPPLY ........................................... 2-65
A. Power Supply Outline ................................ 2-65
B. Power Circuit ............................................. 2-66
1. AC power supply .................................. 2-66
2. DC power supply .................................. 2-66
C. Power Circuit Protection ............................ 2-66
5. Replacing the flexible cable ................. 3-18
III. PURGE UNIT .................................................. 3-21
1. Removing the purge unit ...................... 3-21
2. Removing the waste ink absorber
unit ....................................................... 3-23
IV. FEEDER UNIT ................................................ 3-24
1. Removing the pinch roller unit .............. 3-24
2. Removing the platen ............................ 3-25
3. Installing the platen .............................. 3-26
4. Removing the paper feed roller ............ 3-27
5. Removing the PE sensor ..................... 3-27
V. DRIVING UNIT ................................................ 3-28
1. Removing the carriage motor ............... 3-28
2. Removing the paper feed motor .......... 3-29
3. Installing the paper feed motor ............ 3-30
4. Fastening the paper feed roller set
screws .................................................. 3-30
VI. ELECTRICAL PART ........................................ 3-32
1. Removing the image controller ............ 3-32
2. Removing the engine controller ........... 3-33
3. Removing the PCB box ........................ 3-34
4. Removing the power switch ................. 3-35
5. Removing the DC power supply ........... 3-35