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COPYRIGHT
©
1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
vii
1. Removing the Drum Unit ........... 4-28
2. Cleaning the Photosensitive
Drum........................................... 4-29
3. Removing the Cleaner
Thermistor .................................. 4-29
D. Primary Charging Assembly ............ 4-30
1. Removing the Primary
Charging Assembly .................... 4-30
E. Transfer Charging Assembly ........... 4-31
1. Removing the Transfer
Charging Assembly .................... 4-31
F. Charging Wire .................................. 4-32
1. Outline ........................................ 4-32
2. Stringing the Charging Wires ..... 4-32
3. Adjusting the Height of the
Charging Wires .......................... 4-36
G. Developing Assembly....................... 4-37
1. Removing the Developing
Assembly.................................... 4-37
2. Removing the Developing
Blade .......................................... 4-37
3. Removing the Developing
Cylinder ...................................... 4-38
CHAPTER 5 PICK-UP/FEEDING SYSTEM
I. OUTLINE OF OPERATION ..................... 5-1
II. PICK-UP FROM THE CASSETTE .......... 5-2
A. Pick-Up Operation .............................. 5-2
B. Sequence of Operations
(pick-up/feeding) ................................ 5-3
C. Operation of the Cassette Lifter ......... 5-4
D. Detecting the Size of the Cassette .... 5-6
1. Outline .......................................... 5-6
2. Detecting the Cassette Size ........ 5-7
III. PICK-UP FROM THE MULTIFEEDER .... 5-8
A. Pick-Up Operation .............................. 5-8
B. Detecting the Size of Paper
in the Multifeeder................................ 5-9
C. Sequence of Operations
(pick-up from multifeeder) ................ 5-10
IV. CONTROLLING THE REGISTRATION
CLUTCH ................................................. 5-11
V. DETECTING JAMS ................................ 5-12
A. Outline .............................................. 5-12
B. Sequence of Operations
(jam detection).................................. 5-13
1. Registration Delay Jam .............. 5-13
2. Registration Stationary Jam....... 5-13
3. Delivery Delay Jam .................... 5-14
4. Delivery Stationary Jam ............. 5-14
VI. DISASSEMBLY/ASSEMBLY ................. 5-15
A. Pick-Up Assembly ............................ 5-16
1. Removing the Pick-Up Roller..... 5-16
2. Mounting the Pick-Up Roller ...... 5-16
3. Removing the Pick-Up Drive
Assembly.................................... 5-17
4. Removing the Pick-Up
Assembly.................................... 5-17
5. Removing the Feed Roller ......... 5-18
6. Removing the Separation Roller .. 5-18
7. Mounting the Separation Roller ... 5-19
B. Multifeeder Assembly ....................... 5-20
1. Removing the Multifeeder Tray.... 5-20
2. Removing the Multifeeder
Assembly .................................... 5-20
3. Removing the Multifeeder
Pick-Up Roller ............................ 5-21
4. Removing the Separation Pad..... 5-21
5. Adjusting the Pressure of the
Separation Pad .......................... 5-22
C. Registration Roller Assembly ........... 5-23
1. Removing the Registration
Roller Assembly ......................... 5-23
D. Cassette Assembly .......................... 5-24
1. Removing the Cassette Size
Switch ......................................... 5-24
2. Changing the Cassette Size
(AB/INCH) .................................. 5-25
3. Adjusting the Left/Right
Registration ................................ 5-26