Canon PC920 Support Question
Canon PC920 Support Question
Find answers below for this question about Canon PC920.Need a Canon PC920 manual? We have 1 online manual for this item!
Question posted by rshawfrank on July 12th, 2019
Copy Machine Prints Complete Black Pages
After installing several new cartridges, the copy machine prints a completely black page, If set on lowest exposure is has a slight copy on gray background.
Current Answers
Related Canon PC920 Manual Pages
Service Manual - Page 3
... the following chapters:
Chapter 1 General Description introduces the machine's features, specifications, names of installation, and shows how the machine may be installed using step-by -step basis. Chapter 3
Exposure System discusses the principles of operation used for the machine's exposure system. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
i It also explains...
Service Manual - Page 9
...21 C. Placing Copy Paper 9-9 III. SCHEDULED SERVICING ....... 10-1 IV. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (...INSTALLATION
I . UNPACKING AND
INSTALLATION 9-2 A. Unpacking and Installation ....9-2
B. MOVING THE MACHINE .......... 9-12
CHAPTER 10 MAINTENANCE AND SERVICING
I . Power Supply 8-17 II. Drive System 8-23 D. SELECTING A SITE 9-1 II. Storing the Cartridge...
Service Manual - Page 11
.... Cross Section 1-13
IV.
Copier 1-2 B. Outline 1-20
COPYRIGHT © 1999 CANON INC. ROUTINE MAINTENANCE BY THE USER 1-17
VI. NAMES OF PARTS 1-10 A. Control Panel 1-15
V. CHAPTER 1 GENERAL DESCRIPTION
This chapter provides specifications of the machine, instructions on how to operate the machine, and an outline of copying process. SPECIFICATIONS 1-2
A. External View...
Service Manual - Page 13
... CANON INC. Separate top unit • The machine's top unit may contain as many as a single entity (cartridge). ADF Type • Continuous copying is 0 sec (at all times as long as a business card.
5. Personal Copier with the use of ozone: 0.01 ppm or...removal easy.
8. CHAPTER 1 GENERAL DESCRIPTION
I. FEATURES
1. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
1-1
Service Manual - Page 27
... the selected cassette/ manual feed tray.If there is no paper loaded, it flashes.
Standard Mode Ratio: 100% Count: 1 Paper source: cassette Copy density: auto
mode
Starts copying. USING THE MACHINE
A.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
1-15
Control Panel
[1] [2]
[3] [4] [5] [6]
[7]
[8]
[9]
[15]
[14]
[13]
[12] [11] [10]
No.
continuous...
Service Manual - Page 29
... 10 sheets of blank copy paper (A4/LTR) on the machine, and hold down the Copy Density Mode Selection key for 4 sec or
more. • The count/ratio indicator will be soiled or copy paper tends to end the mode. then, dry wipe it.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU...
Service Manual - Page 33
... DESCRIPTION
The machine's image formation process consists of the photosensitive drum
Figure 1-602
COPYRIGHT © 1999 CANON INC. positive DC) Step 6 Fixing Step 7 Drum cleaning
Static latent image formation block
1. Transfer
Manual feed
5. Image exposure
7. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
1-21 Separation
Registration
: Flow of copy paper...
Service Manual - Page 37
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2-1
Functional Construction
The machine consists of four functional blocks: pickup/feeding system, exposure system, image formation system, and control system. Control system Control panel
Exposure system Copyboard
Control circuit
Original illuminating block
Optical block
Primary charging roller
Image formation ...
Service Manual - Page 56
... until the end of the lamp increases the tempera- CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) if its reading reaches 37.5°C or higher, the copying speed is moved to 6 cpm.
CHAPTER 3 EXPOSURE SYSTEM
4.
Controlling the Copying Speed The machine uses a halogen lamp for scanning, and the heat of the...
Service Manual - Page 101
... level of the DC bias. (See Table 4-102.)
Reference: The machine applies a DC bias over a non-copy image area (between the copy image area (-625 V) and the non- CHAPTER 4 IMAGE FORMATION SYSTEM
d. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
4-7 Copy Start key ON STBY INTR
SCFW
SCRV
SCFW
SCRV LSTR...
Service Manual - Page 104
...the transfer bias to the transfer charging roller during initial rotation executed each time the Copy Start key is executed
The polarity of the readings. CHAPTER 4 IMAGE FORMATION SYSTEM
c.... PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
d. Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level ...
Service Manual - Page 117
... memory,
which can cause white spots or black bands on copies. Cartridge
1. Do not open when the cartridge is fit into the machine and the machine's top unit is removed from light. Light-Blocking Shutter When the cartridge is closed.
Drum Cover Shutter If exposed to as a "cartridge." (You cannot disassemble the cartridge.)
Developing blade Primary charging roller Light...
Service Manual - Page 118
...the sun are usually about 10000 to direct sunlight. However, avoid exposing it rotates when
making copies. CHAPTER 4 IMAGE FORMATION SYSTEM
2. Be sure to rotate it in the direction in a... rule, do not touch or clean the photosensitive drum.
1) Open the machine's top unit, and take out the cartridge. 2) Turn over the cartridge, and open the drum cover shutter 3) Clean the drum surface with a ...
Service Manual - Page 120
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Blank Exposure
1. CHAPTER 4 IMAGE FORMATION SYSTEM
C. Removing the Blanking Exposure Unit
1) Set the machine to the maximum ratio (141%) as follows: • Turn on the power, and select a default ratio of 141%. • Press the Copy Start key. • When the lens has moved to...
Service Manual - Page 125
...the movement of copy paper. it is controlled by the registration roller so that its leading edge will match the leading edge of paper.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN ... INC. CHAPTER 5 PICK-UP/FEEDING SYSTEM
I.
The machine is equipped with four sensors used to reach the copy tray.
Outline
The machine moves paper using a center reference method, in which paper...
Service Manual - Page 127
...(PUSLD*)
Pickup clutch
SL5 Copy paper
Cassette pickup rollers
Figure 5-103 (Multifeeder type)
COPYRIGHT © 1999 CANON INC. Outline The machine has three types of pickup...turns on , the spring causes the pickup roller to rotate slightly,
M1
causing the gear and the pickup roller
gear to... REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
5-3
ing the drive to move to engage...
Service Manual - Page 244
... of the machine.
A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Unpacking and Installation
Step 1
2
Work
Checks and remarks
Take out the copier and the ... [1]
You will be storing the shipping attachment [1] inside the machine in copiers, can cause blank copies. UNPACKING AND INSTALLATION
When a piece of metal is known as "condensation" and, in step 9.
9-2
...
Service Manual - Page 314
... user must be replaced with a new cartridge soon. • If the copies are not normal, Replace the new cartridge.
Figure 11-302
2) Set the cartridge back into the machine, and make copies. • If the copies are normal, You may continue to have white lines or spots as necessary: 1) Take out the cartridge from the machine, and shake it must know that...
Service Manual - Page 320
... roller. YES Inform the user that the cartridge is foggy vertically. 8 The copy has black lines. (vertical, fuzzy, thick) 9 The copy has black lines. (vertical, fine)
Cause Scanner
Transfer guide assembly Cartridge
Step 1
2
Checks Clean the scanning lamp, reflecting plate, lens, and mirror.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
11-55...
Service Manual - Page 361
2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
21
21 ADF
PI1
PI2 BR BL V
PI3 BR BL V
Delivery sensor
Registration ...MS1
Switch
J3 OR GN Y V GY W OR
M1 Pickup motor M1 Belt motor
54321
54321
1234567 1234567
Color coding
BK BLACK BL BLUE BR BROWN GY GRAY GN GREEN OR ORANGE PK PINK R RED SB SKY-BLUE V VIOLET W WHITE Y YELLOW
COPYRIGHT © 1999 CANON INC.
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