THIS DOCUMENTATION IS PUBLISHED BY CANON INC ., J APAN, TO SERVE AS A SOURCE
OF REFERENCE FOR WORK IN THE FIELD.
SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY
FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER
PRINTED MATTER.
ANY QUESTIONS REGARDING INFORMA TION CONTAINED HEREIN SHOULD BE DIRECTED
TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
THIS DOCUMENT ATION IS INTENDED FOR ALL SALES AREAS, AND MA Y CONTAIN INFORMATION NOT APPLICABLE TO CERTAIN AREAS.
This Service Manual contains basic data and figures for the Stapler Sorter-J1/K1/E3
needed to service the machine in the field.
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
General Description
shows how to operate the copier, and explains how copies are made.
Basic Operation
workings.
Exposure System
lens drive unit and scanner drive unit. It also explains the timing at which
these drive units are operated, and shows how they may be disassembled/
assembled and adjusted.
Image Formation System
It also explains the timing at which the various units involved in image
formation are operated, and shows how they may be disassembled/
assembled and adjusted.
Pick-Up/Feeding System
is picked up to when a copy is delivered in view of the functions of electrical
and mechanical units ahd in relation to their timing of operation. It also shows
how these units may be disassembled/assembled and adjusted.
Fixing System
media in view of the functions of electrical and mechanical units and in
relation to their timing of operation. It also shows how these units may be
disassembled/assembled and adjusted.
explains the principles used to fuse toner images to tranfer
Externals/Auxiliary Mechanisms
explains the principles used for the copier’s various control mechanisms in
view of the functions of electrical and mechanical units and in relation to their
timing of operation. It also shows how these units may be disassembled/
assembled and adjusted.
Installtion
the copier may be installed using step-by-step instructions.
introduces requirements for the site of installation, and shows how
Maintenance and Servicing
consumables/durables and scheduled servicing charts.
Troubleshooting
adjustments, and problems identification (image fault/malfunction).
introduces the copier's features and specifications,
provides outlines of the copier's various operational
discusses the principles of operation used for the copier's
discusses the principles of how images are formed.
explains the principles used from when copy paper
shows the copier's external parts, and
provides tables of periodically replaced parts and
provides tables of maintenance/inspection, standards/
Appendix contains diagrams showing electrical parts arrangement, tables of
signals, tables of special tools, tables of solvents/oils, and a general timing
chart.
The descriptions in this Service Manual are subject to change without notice for
product improvement or other purposes, and major changes will be communicated in the
from of Service Information bulletins.
All service persons are expected to have a good understanding of the contents of this
Service Manual and all relevant Service Information bulletins and be able to identify and
isolate faults in the machine.
1.Copies as large as A3 in size (DIRECT) may be made, and the copyboard is of a
fixed type.
• Although compact in design, the copier enables making copies as large as A3 in size in the
DIRECT mode.
• The copyboard is of a fixed type so that pages of a book may be copied with much ease.
2.Zooming between 50% and 200%.
• Copies may be made in reproduction rations of between 50% and 200%, selectable in 1%
increments.
3.Front loading for faster supply of paper.
• Paper is loaded from the front of the copier so that the cassette* may be replenished with
paper without wasting time. The design also saves space.
*Universal and its capacity is 500 sheets.
4.Single-component fine particle toner for high resolution.
• Images are developed using the single component toner projection method. Further, the
copier uses toner of extremely fine particles for enhanced image quality.
5.Multifeeder (stack bypass) pick-up.
2
• As many as 50 copies (80 g/m
) may be made continuously using the multifeeding mecha-
Press to select or cancel the Sort or Group mode.
* To use the Sort or Group mode, your copier must be
equipped with the optional Sorter or Stapler Sorter.
Press to select or cancel the Two-Page Separation mode.
Flashes when a paper jam occurs.
Flashes when the Control Card is not fully inserted.
Flashes when there is no paper in the selected paper supply (paper cassette or stack bypass).
Flashes when toner needs to be added.
Displays the number of copies to be made, and the selected enlargement/reduction ratio.
Also, when the copier is not functioning properly, the Service Call message will appear here.
Press to return the copier to the Standard mode.
Press to begin copying.
Press to stop the copier before copying is complete.
Press to change the number of copies to be made to one.
Press to input the number of copies to be made.
Press to display the selected enlargement/reduction ratio.
Press to reduce or enlarge copy images by any ratio from
50% to 200%, selectable in 1% increments.
Press to select or cancel Automatic Zoom.
* To use Automatic Zoom, your copier must be equipped
with the optional Automatic Document Feeder (ADF).
When copying using the stack bypass or a universal cas-
sette, you cannot use Automatic Zoom.
Press to select the paper supply (paper cassette or stack
bypass).
Lights to show the selected paper supply (paper cassette
or stack bypass).
If a paper jam occurs, flashes to show jam location.
* This indicator will also flash to inform the user of vari-
ous errors.
Press to enlarge copy images using a fixed enlargement
ratio.
Press to make copies the same size as the original.
Press to reduce copy images using a fixed reduction ratio.
Press to select or cancel Automatic Exposure Control.
Use to manually adjust the lightness/darkness of copies.
Carefully instruct the user to be sure to clean the following parts of the copier once a week.
1.Primary Corona Assembly
Slide in and out the wire cleaner to clean the corona wires.
2.Copyboard Glass
Clean the copyboard glass with a moist cloth; then, wipe it dry.
3.Copyboard Cover
Clean the copyboard cover with a mild detergent solution; then, wipe it dry.
4.Transfer Corona Assembly
Remove the transfer corona assembly from the copier; then, slide the knob (wire cleaner) at the
bottom of the transfer corona assembly back and forth to clean the corona wires.
Further, clean the static eliminator using the cleaning brush (accessory).
This copier consists of the units shown in Figure 1-501.
The image forming process is divided into the eight steps shown below.
Step 1: Pre-exposure
Step 2: Primary corona (negative DC)
Step 3: Image exposure
Step 4: Developing (positive plus AC)
Step 5: Transfer (negative DC)
Step 6: Separation
Step 7: Fixing
Step 8: Drum cleaning
In outline diagrams, represents mechanical drive paths, and indicates
electrical signal paths.
Signals in digital circuits are identified as ‘1’ for High and ‘0’ for Low. The voltage of
signals, however, depends on the circuit.
Nearly all operations of the product are controlled by a microprocessor; the
internal workings of the processor are not relevant to the serviceman’s work and,
therefore, are left out of the discussions. By the same token, no repairs are
prescribed for the PCBs at the user’s premises; for this reason, PCBs are discussed
by means of block diagrams rather than circuit diagrams.
For the purpose of explanation, discussions are divided into the following: from
sensors to DC controller PCB input ports; from DC controller output ports to loads;
and minor control circuits and functions.
The NP-6317's main mechanisms are controlled by the microprocessor, PROM, and
EEPROM on the DC controller PCB.
1. Microprocessor (Q300)
• controls the copying sequence
• controls the control panel
• controls the main motor/scanner motor/mirror motor
• controls the scanning lamp/fuser lamp
• reads the analog signals
2. PROM (Q301)
• contains the sequence program
3. EEPROM (Q317)
• stores data that can be modified in the service mode (replaces conventional variable resistors
and switches)
Note:
EEPROM is a type of ROM in which data may be erased or stored newly.
For this reason, the NP-6317's RAM and RAM are not backed up by a lithium battery.
Note:
The NP-6317 is equipped with an A/D converter and, therefore, its microprocessor can read
analog signals.
Note:
The main motor (M1) is a brushless motor.
The scanner motor (M2) and mirror motor (M3) are stepping motors which use the oscillation
frequency of the crystal oscillator on the DC controller.
Scanner home position sensor
Lens home position sendor
Cassette paper sensor
Delivery paper sensor
Pre-registration paper sensor
Multifeeder paper densor
Mirror home position sensor