Canon iR1600 Series, Service Manual

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COPYRIGHT © 2002 CANON INC. 2001 2001 CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
xiii
CONTENTS
1 Outline ................................................ 6-1
1.1 Specifications and
Constructions ............................. 6-1
1.2 Arrangement of
Major Rollers and Sensors ........ 6-2
2 Controlling the Pickup Assembly ...... 6-3
2.1 Controlling the Pickup
from the Cassette ....................... 6-3
2.1.1 Outline ................................. 6-3
2.1.2 Pickup form the Cassette .... 6-4
2.1.3 Pickup Retry ........................ 6-6
2.1.4 Detecting the Size of Paper in
the Cassette ......................... 6-7
2.2 Controlling the Pickup
from the Multifeeder Tray ........ 6-8
2.2.1 Outline ................................. 6-8
2.2.2 Pickup from the
Multifeeder Tray ................. 6-9
2.2.3 Multifeeder Retry
Operation ........................... 6-11
2.2.4 Setting the Paper Size
for the Multifeeder Tray
(user mode) ....................... 6-11
3 Controlling the Registration
Roller ................................................ 6-12
CHAPTER 6 PICKUP/FEEDING SYSTEM
3.1 Detecting the Leading Edge of
Paper ........................................ 6-12
4 Detecting Jams ................................. 6-13
4.1 Outline ..................................... 6-13
4.2 Sequence of Jam Detection ..... 6-14
4.2.1 Delay Jam .......................... 6-14
4.2.2 Stationary Jams ................. 6-16
4.2.3 Cover Open Jam ................ 6-17
4.2.4 Jam History ....................... 6-17
5 Disassembly and Assembly ............. 6-18
5.1 Cassette Pickup Assembly ...... 6-19
5.1.1 Remove the Cassette Pickup
Assembly ........................... 6-19
5.1.2 Removing the Cassette
Pickup Roller ..................... 6-21
5.1.3 Removing the Feeding/
Separation Roller .............. 6-22
5.1.4 Removing the Cassette
Pickup Solenoid ................ 6-22
5.1.5 Removing the Paper Size
Detecting Switch ............... 6-22
5.1.6 Removing the Cassette Paper
Sensor ................................ 6-23
5.1.7 Removing the Retry
Sensor ................................ 6-23
4.3.1 Controlling the DC Bias to a
Constant Current Level ....... 5-9
4.3.2 Controlling the DC Bias to a
Constant Level .................... 5-9
4.4 Correcting the Voltage Level
(ATVC control) ........................ 5-10
4.5 Controlling the Output According
to Operation Mode .................. 5-10
4.5.1 Type of Mode .................... 5-10
5 Detecting the Presence/Absence of a
Cartridge and the Level of Toner ..... 5-11
5.1
Outline ..................................... 5-11
5.2 Sequence of Detection
(level of toner) ......................... 5-12
6 Monitoring the Waste Toner Case ... 5-14
6.1 Outline ..................................... 5-14
6.2 Sequence of Operation ............ 5-15
7 Disassembly and Assembly ............. 5-16
7.1 Photosensitive Drum ............... 5-17
7.1.1 Removing the Drum
Unit .................................... 5-17
7.1.2 Cleaning the
Photosensitive Drum ......... 5-17
7.2 Developing Assembly ............. 5-18
7.2.1 Removing the Developing
Assembly ........................... 5-18
7.3 Transfer Roller ........................ 5-20
7.3.1 Removing the Transfer
Roller ................................. 5-20