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NP6621
Canon NP6621 Service Manual
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Canon NP6621 Service Manual
Also see for NP6621:
Service manual
Service handbook
Table of content
Contents
CONTENTS
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
I. FEATURES
II. SPECIFICATIONS
Cassette Feeding Module-A2/Cassette Feeding Unit-K1
C. Paper Deck Pedestal-K1
III. NAMES OF PARTS
B. Cross Section
IV. BASIC OPERATION
B. Making Copies
C. Using the Stack Bypass
D. User Mode
auto clear time
initializing user mode
V. WARNINGS AND ACTIONS
B. Cleaning the Static Charge Eliminator
VI. ROUTINE CLEANING
CHAPTER 2 COPYING PROCESS
Table Of Contents
I. IMAGE FORMATION
B. Latent Static Image Formation Block
C. Step 1 (pre-exposure)
E. Step 3 (image exposure)
G. Step 5 (transfer)
H. Step 6 (separation)
I. Step 7 (fixing)
II. AUXILIARY PROCESS
CHAPTER 3 OPERATIONS AND TIMING
Table Of Contents
I. BASIC OPERATIONS
B. Outline of Electrical Circuitry
C. Inputs to the DC Controller
D. Outputs from the DC Controller
E. Inputs to and Outputs from the Cassette Feeding Module-B2 Driver PCB
F. Inputs to and Outputs from the Cassette Feeding Module-A2 Driver PCB
G. Inputs to and Outputs from the Cassette Feeding Unit-K1 Driver PCB
H. Main Motor Control Circuit
II. EXPOSURE SYSTEM
lens motor drive circuit
C. Scanner Drive System
driving the scanner motor
D. Operations of the Scanner in Page Separation Mode
j. blank exposure control
a. pick-up from the machine
C. Duplexing Unit
D. Pick-Up from the Cassette Feeding Module-A2
E. Pick-Up from the Cassette Feeding Unit-K1
F. Paper Deck Pedestal-K1
lifter operation
G. Multifeeder
H. Identifying the Size of the Cassette
I. Fixing/Delivery Assembly
J. Detecting Jams
delivery delay jam
delivery stationary jam
V. POWER SUPPLY
B. Power Supply Circuitry
C. Detecting Errors on the Power Supply PCB
D. Protection Mechanisms for the Power Supply Circuit
VI. SERVICE MODE
C. Control Display Mode ('1')
D. I/O Mode ('2')
E. Adjustment Mode ('3')
F. Operation/Inspection Mode ('4')
G. Machine Settings Mode ('5')
H. Counter Mode ('6')
VII. SELF DIAGNOSIS
B. Self Diagnosis on the Cassette Feeding Unit
C. RDF/ADF Self Diagnosis
D. Sorter Self Diagnosis
VIII. STANDARDS AND ADJUSTMENTS
checking the photointerrupters
CHAPTER 4 MECHANICAL SYSTEM
Table Of Contents
I. EXTERNALS
B. Control Panel
removing the exhaust fan
E. Counter
II. DRIVE SYSTEM
routing the scanner cable
B. Lens Drive Assembly
routing the lens cable
C. Main Motor
III. PICK-UP/FEEDING SYSTEM
removing the separation pad
B. Multifeeder Assembly
C. Registration Roller Assembly
D. Feeding Assembly
F. Duplexing Assembly
G. Cassette Unit
H. Paper Deck Pedestal-K1
points to note
removing the separation roller
IV. EXPOSURE SYSTEM
routing the blank shutter cable
V. CHARGING SYSTEM
B. Primary Charging Assembly
C. Transfer Charging Assembly
D. Drum Heater
removing the developing assembly
removing the developing cylinder
VII. FIXING SYSTEM
removing the fixing roller
VIII.ELECTRICAL
C. AE Sensor PCB
I. SELECTING THE SITE
II. UNPACKING AND INSTALLING THE COPIER
B. Turning On the Copier
C. Checking the Images and Operations
D. Attaching the Drum Unit
E. Changing the Cassette Size
III. RELOCATING THE COPIER
IV. REPLACING THE DRUM UNIT
V. INSTALLING THE CONTROL CARD IV N
I. PERIODICALLY REPLACED PARTS
A. GENERAL TIMING CHART
B. SIGNALS AND ABBREVIATIONS
C. GENERAL CIRCUIT DIAGRAM
D. DC CONTROLLER CIRCUIT DIAGRAM
E. COMPOSITE POWER SUPPLY CIRCUIT DIAGRAM
F. CONTROL PANEL KEY PCB
G. AE SENSOR CIRCUIT DIAGRAM
H. INTENSITY SENSOR CIRCUIT DIAGRAM
I. TONER LEVEL DETECTION CIRCUIT DIAGRAM
J. CASSETTE FEEDING MODULE-B2 GENERAL CIRCUIT DIAGRAM
K. CASSETTE FEEDING MODULE-B2 DRIVER CIRCUIT DIAGRAM
L. CASSETTE FEEDING MODULE-A2 GENERAL CIRCUIT DIAGRAM
M. CASSETTE FEEDING MODULE-A2 DRIVER CIRCUIT DIAGRAM
N. CASSETTE FEEDING UNIT-K1 GENERAL CIRCUIT DIAGRAM
O. CASSETTE FEEDING UNIT-K1
P. PAPER DECK PEDESTAL-K1 GENERAL CIRCUIT DIAGRAM
Q. PAPER DECK PEDESTAL-K1 DRIVER CIRCUIT DIAGRAM
R. SPECIAL TOOLS
S. SOLVENTS/OILS
A–40
APPENDIX
COPYRIGHT
©
1998
CANON INC.
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
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