Canon NP-2020 Manuals

Manuals and User Guides for Canon NP-2020. We have 2 Canon NP-2020 manuals available for free PDF download: Service Manual

Canon NP-2020 Service Manual (188 pages)

for 220/240V

Brand: Canon | Category: Copier | Size: 5 MB

Features
2
Specifications
3
Type
3
Construction
3
Performance
4
Others
5
Fixed Reproduction Ratio
6
Copy Speed
6
Paper Size
7
Names of Parts
8
External View
8
Cross Sectional View
9
Operation
11
Control Panel
11
Size
11
Making Copies
13
Using the Manual Feed Tray
13
Making Two Sided Copies
13
Making Overlay Copies
14
Using the COPY DENSITY Correction Lever
14
Replacing the CT Unit
14
Auto-Start
15
Warnings and Actions to Take
16
JAM Indicator
16
ADD Paper Indicator
17
Using the Multifeeder Tray
17
Add Toner Indicator
18
Control Card Indicator
18
CT Unit
18
Black Developing Assembly
18
Routine Work by the User
19
Image Formation Process
20
Formation of Electrostatic Latent Image
21
Pre-Conditioning Exposure
21
Primary Corona Exposure
22
Image Exposure
22
Development
22
Transfer
23
Separation
23
Drum Cleaning
24
Auxiliary Processes
25
Blank Exposure Mechanism
25
Ozone Filter
25
Basic Mechanisms
26
Functional Construction
26
Electrical Circuitry
27
Microprocessors
27
Lsi
27
Inputs to DC Controller
29
Outputs from DC Controller
33
Basic Sequence
36
Exposure System
38
Varying the Reproduction Ratio
38
Lens Drive System
39
Basic Sequence for Lens Drive System
41
Lens Drive Motor Circuit
42
Scanner Drive System
43
Relationship between Sensor and Signals
44
Basic Sequence for Scanner
44
Movement of Scanner in Page Separation Mode
45
Document Size Identification
46
Mechanism
46
Document Identification Timing
47
Identification of Document Size
48
Image Formation System
49
Basic Sequence of Image Formation
50
Controlling the Scanning Lamp
51
Copy Density Correction Lever
52
Controlling the Primary/Transfer Corona Current
53
Turning the Grid Bias on and off
54
Controlling the Development Bias
55
Controlling the DC Bias Voltage Level
56
Control Sequence for Development Bias
57
Measuring the Document Density
58
Reading the AE Sensor Output
58
Adjustment
59
Adjusting the AE Slope
60
Adjusting PCB
60
Developing Assembly and Drum Cleaning Unit
61
Monitoring the Toner Level
61
Torque Limiter
61
Blank Control
62
Controlling the Blank Exposure Shutter
62
Controlling the Transfer Corona Wire Cleaning Mechanism
63
Cleaning Mechanism
63
Pick-Up/Feed System
64
Contact Sensor
64
DC Controller PCB
65
Sequence for Pick-Up/Feed System
66
Manual Feed Pick up
67
Using the Multifeeder
68
Sequence of Operations
69
Identifying the Cassette Size
70
Fixing Assembly and Delivery Assembly
71
Controlling the Fixing Roller Temperature
71
Oil Application Roller
72
Error Detection Circuit
74
Detection by Hardware
76
Error Code
77
Jam Detection
78
Pick-Up Delay Jam
79
Separation Delay Jam
79
Separation Stationary Jam
80
Delivery Delay Jam
80
Delivery Stationary Jam
81
Power Supply
82
DC Power Supply
82
Protection Mechanism for Power Supply Circuit
82
DC Power Supply for Options
83
Service Modes
85
Using the Service Mode
86
Self Diagnostic Mechanism
87
Externals
89
External Covers
89
Rear Cover
90
Inside Covers
91
Lower Front Cover
91
Left Cover
91
Right Cover
92
Copyboard Cover
93
Fans
93
Replacing the Contact Sheet
93
Scanner Cooling Fan
94
Exhaust Fan
94
Feeder Fan
94
Drive System
95
Lens Drive Unit
95
Lens Cable
96
Scanner Drive Unit
97
Detaching the Scanner Cable
97
Attaching the Scanner Cable
97
Adjusting the Scanner Drive Cable
98
Adjusting the Mirror Position
98
Lubrication
99
Main Motor Unit
100
Removing the Main Motor
100
Mounting the Main Motor
100
Feed System
101
Pick up Unit
101
Pick up Roller
101
Positioning the Pick up Roller
101
Registration Roller
102
Feeder Rollers
103
Manual Feed Pick up Roller
103
Detaching the Multifeeder
104
Detaching the Multifeeder Separation Pad
104
Detaching the Multifeeder Pick up Roller
105
Feeder Unit
106
Feeder Belt
107
Illuminating Unit
108
Removing the Scanning Lamp
108
Removing the Thermal Fuse
108
Blank Exposure Unit
109
Pre-Exposure PCB
109
Using the Mirror Cleaning Tool
110
Cleaning the No. 5 Mirror
110
Cleaning the No. 6 Mirror
110
Corona System
111
Drum Unit
111
Removing the Drum Unit
111
Cleaning
111
Primary and Transfer Corona Units
112
Primary Corona Unit
113
Transfer Corona Unit
113
Mounting the Transfer Corona Unit
114
Development System
115
Developing Assembly
115
Removing the Blade, Developing Cylinder and Side Seal
115
Mounting the Side Seal and Blade
117
Fixing System
118
Fixing Assembly
118
Removing the Fixing Assembly
118
Fixing Heater
119
Upper Fixing Roller
119
Lower Fixing Roller
120
Mounting the Heater and Upper Fixing Roller
120
Adjusting the Nip
121
Mounting the Thermistor
121
Tightening the Pressure Nut
121
Mounting the Thermal Switch
122
Position of the Paper Guide
122
Removing the Upper Separation Claw
123
Mounting the Upper Separation Claw
123
Removing the Lower Separation Claw
123
Location
124
Unpacking and Installing the Copiter
125
Mounting the Drum
128
Checking the Operation
129
Adding Toner
130
Checking the Image
131
Setting the Cassette Size
132
Replacing the Cassette Spring
135
Removing the Pick-Up Roller
136
Setting the CT Unit
137
Relocating the Copier
138
Setting Control Card V
139
Attaching the Document Holder
141
Periodically Replaced Parts
142
Consumables
143
Periodical Servicing
144
Periodical Servicing Chart
145
Signals and Abbreviations
147
General Circuit Diagram
149
Wiring Diagram
151

Canon NP-2020 Service Manual (207 pages)

Brand: Canon | Category: Copier | Size: 7 MB

Table of Contents

11
- 3 General Circuit Diagram
  
  3
  - Table of Contents
    11
  - Type
    16
  - Construction
    16
  - Others
    18
  - Externa1 View
    21
  - Cross-Sectional View
    22
  - Control Panel
    24
  - Making Copies
    26
  - Using the Manual Feed Tray (NP2020
    26
  - Using the Manual Feed Tray (NP2120
    26
  - Making Two-Sided Copies
    26
  - Making Overlay Copies
    27
  - Replacing the CT Unit
    27
  - Using the COPV DENSITY CORRECTION Lever
    27
- 1 Atuo-Start (NP2120)
  
  28
  - JAM Indicator ( 8
    29
  - ADD PAPER Indicator ( & )
    30
  - ADD TONER Indicator ( H
    31
  - Auxiliary Processes
    33
  - Blank Exposure Mechanism
    39
  - Ozone Filter
    39
    
    B. Basic Sequence of Image Formation
    65
Mechanical System

104
- B. Control Panel
  104
  - Control Panel
    105
  - Copyboard Cover
    105
  - Fans
    109
  - Lens Dríve Unit
    112
  - Scanner Drive Unit
    113
  - Main Motor Unit
    116
  - Pick-Up Unit
    117
  - Feeder Unit
    122
  - Illuminating Unit
    124
  - Blank Exposure Unit
    125
  - Drum Unit
    127
  - Primary and Transfer Corona Units
    128
  - Developing Assembly
    131
  - Fixing Assembly
    134
  - Unpacking and Installing the Copier
    140
- E. Checking the Image
  148
  - DC Power Supply Pcb
    174
Variable Resistor (Vr), Led, and Check Pin by Pcb

179
- Specification
  180
  - General Description
    180
- Basic Constructions
  183
  - Inputs to and Outputs from Paper Deck Controller
    186
  - Pick-Up Roller
    193
  - Feed Roller
    194
  - Registration Roller
    195
  - Deck Drive Unit
    196
- Consumables
  200
  - Of Electrical Parts
    202
- Parts to be Replaced
  200
  - Periodically
    200
- Variable Resistor (Vr), Led, and Check Pin by Pcb
  202

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More Canon Manuals

Canon NP-2020 Manuals

Canon NP-2020 Service Manual (188 pages)

Table of Contents

Canon NP-2020 Service Manual (207 pages)

Table of Contents

Table of Contents

3 General Circuit Diagram

1 Atuo-Start (NP2120)

Mechanical System

Variable Resistor (Vr), Led, and Check Pin by Pcb

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