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NP7160
Canon NP7160 Service Manual
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Canon NP7160 Service Manual
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Service manual
Table of content
Contents
system configuration
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
general description
I. FEATURES
II. SPECIFICATIONS
Performance
Others
III. NAMES OF PARTS
B. Cross Section
IV. OPERATING THE MACHINE
B. User Mode
VII. IMAGE FORMATION
basic operation
I. BASIC MECHANISMS
B. Outline of the Electrical Circuitry
C. Basic Sequence of Operations
Basic Sequence of Operations at Copy Start
D. Main Motor (M1) Control Circuitry
E. Inputs to the DC Controller
f. outputs from the dc controller
I. OUTLINE OF OPERATION
II. LENS DRIVE SYSTEM
Motor Control Circuit
Moving the Lens
III. SCANNER DRIVE SYSTEM
B. Scanner Motor Control Circuit
E. Scanner Movement in Page Separation Mode
IV. OTHERS
V. DISASSEMBLY/ASSEMBLY
A. Scanner Drive Assembly
Removing the Scanner Drive Cable
Routing the Scanner Drive Cable
Adjusting the Position of the Mirror
Adjusting the Tension of the Scanner Drive Cable
B. Lens Drive Assembly
Removing the Mirror Motor
image formation system
I. OUTLINE OF THE PROCESSES
C. Controlling the Intensity of the Scanning Lamp
Operation
Protection Mechanisms
D. Controlling the Primary/Transfer Bias
E. Controlling the Developing/Separation Static Eliminator Bias
Turning On/Off the Developing DC Bias
AC Bias/Separation Eliminator Bias
DC Bias to a Specific Voltage to Suit Copy Density
F. Controlling the Blank Exposure Lamp
Turning On the Blank Exposure Lamp in Reduce Mode
d. monitoring the waste toner box
e. control by the cleaner thermistor
f. auto density adjustment (ae)
a. scanning lamp assembly
b. exposure assembly
Removing the Drum Unit
Cleaning the Photosensitive Drum
D. Primary Charging Assembly
E. Transfer Charging Assembly
F. Charging Wire
Adjusting the Height of the Charging Wires
G. Developing Assembly
Removing the Developing Cylinder
Table Of Contents
II. PICK-UP FROM THE CASSETTE
C. Operation of the Cassette Lifter
D. Detecting the Size of the Cassette
Detecting the Cassette Size
III. PICK-UP FROM THE MULTIFEEDER
B. Detecting the Size of Paper in the Multifeeder
IV. CONTROLLING THE REGISTRATION CLUTCH
V. DETECTING JAMS
Registration Delay Jam
Delivery Delay Jam
VI. DISASSEMBLY/ASSEMBLY
A. Pick-Up Assembly
b. multifeeder assembly
d. cassette assembly
fixing system
A. Outline
B. Controlling the Fixing Temperature
C. Error Detection Circuit
Surface Temperature of the Fixing Upper Roller
II. DISASSEMBLY/ASSEMBLY
A. Fixing Assembly
Removing the Fixing Heater
Removing the Thermal Switch Assembly
Removing the Main Thermistor
Removing the Fixing Upper Roller
Removing the Fixing Lower Roller
Adjusting the Nip
B. Delivery Assembly
Removing the Delivery Roller
Table Of Contents
II. POWER SUPPLY
B. Power Supply Circuitry
Drum Heater, and Accessory Cassette Heater
C. Protection Mechanisms of the Power Supply Circuitry
III. DISASSEMBLY/ASSEMBLY
A. External Covers
Removing the Right Door
Removing the Upper Left Cover
Removing the Lower Inside Cover
B. Control Panel
C. Copyboard Glass
d. fans
e. counter assembly
g. dc controller pcb
supply pcb
j. lamp regulator pcb
I. SELECTING THE SITE
II. UNPACKING AND INSTALLATION
B. Removing the Metal Fixings
C. Mounting the Drum Unit
D. Cleaning the Parts and Making Checks
E. Checking the Images/Operations and User Mode
F. Supplying Toner
III. RELOCATING THE MACHINE
IV. INSTALLING THE CONTROL CARD IV N
V. INSTALLING THE REMOTE DIAGNOSTIC DEVICE II
VI. INSTALLING THE ACCESSORY COUNTER
VII. INSTALLING THE ACCESSORY HEATER
B. Mounting the Cassette/Drum Heater
C. Installing the Mirror Heater
I. PERIODICALLY REPLACED PARTS
II. CONSUMABLES AND DURABLES
III. SCHEDULED SERVICING CHART
IV. SCHEDULED SERVICING TABLE
Table Of Contents
I. GUIDE TO TROUBLESHOOTING TABLES
A. Image Adjustment Basic Procedure
B. Points to Note for Scheduled Servicing
II. STANDARDS AND ADJUSTMENTS
B. Exposure System
C. Image Formation System
D. Pick-Up/Feeding System
e. fixing system
f. electrical system
iii. image faults
B. Image Fault Samples
C. Troubleshooting Image Faults
The copy is foggy. (overall)
The copy is foggy. (vertical)
The back of the copy is soiled
The copy has faulty fixing
The copy has a displaced leading edge
The copy has a blurred image
The copy has poor sharpness
The copy is blank
IV. TROUBLESHOOTING MALFUNCTIONS
E800
AC power is absent
DC power supply is absent
The scanner fails to move
The lens fails to move
The scanning lamp fails to turn on
The pre-exposure lamp fails to turn on
Pick-up fails. (cassette)
The registration roller fails to rotate
The fixing heater fails to turn on
The Add Toner indicator fails to turn off
The Waste Toner Box Full indicator fails to turn off
The Add Paper indicator fails to turn off
The Jam indicator fails to turn off
The Set Control Card indicator fails to turn off
a. copy jams
Pick-Up/Feeding Assembly
Fixing/Delivery Assembly
Double Feeding
a. sensors and switches
and Solenoids
c. heaters, lamps, and others
d. pcbs
Diodes, and Check Pins by PCB
Power Supply PCB
High-Voltage Power Supply PCB
VII. SERVICE MODE
C. Using Adjust Mode and Function Mode
D. Display Mode [1]
E. I/O Display Mode [2]
F. Adjust Mode [3]
G. Function Mode [4]
H. Option Mode [5]
I. Counter Mode [6]
J. Application Mode [7]
VIII. SELF DIAGNOSIS
b. adf
C. Sorter
A. GENERAL TIMING CHART
B. SIGNALS AND ABBREVIATIONS
C. GENERAL CIRCUIT DIAGRAM
COPYRIGHT
©
1998 CANON INC.
CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
FY8-13FB-000
AUG. 1998
SERVICE
MANUAL
REVISION 0
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