Canon PC770 Support Question
Canon PC770 Support Question
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Question posted by Anonymous-34426 on July 25th, 2011
What Does8ni Mean
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Related Canon PC770 Manual Pages
Service Manual - Page 3
... be updated from each other for servicing the machine in the field. The PC720, PC740, PC750, and PC770 differ from time to time to reflect improvements rendered to the copier; CHAPTER 3 "OPERATIONS AND TIMING" explains how the copier's electrical and mechanical systems are related to each other with the information contained in the...
Service Manual - Page 5
...
1-1
III. NAMES OF PARTS
1-6
1-2
IV. PICK-UP/FEEDING SYSTEM 3-36
VIII. FAN
3-59
CHAPTER 4 MECHANICAL SYSTEM
I . PICK-UP/FEEDING SYSTEM 4-17
VI. RELOCATING THE COPIER 5-7
5-2
COPYRIGHT © 1994 CANON INC. IMAGE FORMATION
2-1
II. IMAGE FORMATION SYSTEM 3-17
ADJUSTMENTS
3-64
IV. SELECTING THE SITE II. BASIC OPERATION
3-1
VI. CHARGING, DEVELOPING,
II...
Service Manual - Page 9
... time. • In addition, the maximum power consumption is 0.98 kW or less.
4.
I. Extra touches to make jam removal easy. Separate top unit. • The copier's top unit may be opened to the copies. • The black toner cartridge may be selected.
2. Uses a SURF fixing assembly. • The use of a charging...
Service Manual - Page 10
... Pick-up
Manual
Cassette (1 holder) Singlefeeder
Multifeeder
Separation
Curvature separation + static eliminator
Fixing
Flat heater
Cleaning
Blade
Original orientation
Center reference (copyboard)
PC770 PC770
1 - 2
COPYRIGHT © 1994 CANON INC.
SPECIFICATIONS
1. Type
Item
PC720
PC740
Body
Desktop
Copyboard
Fixed
Light source
Fluorescent lamp (19 W)
Lens
Fixed lens...
Service Manual - Page 11
GENERAL DESCRIPTIONMI
3. Performance
Item
PC720
PC740
PC750
PC770
Original type
Sheet, book, 3-D object (2 kg max.)
Maximum original size A4/LGL
DIRECT 1 : 1
REDUCE I 1 : 0.707
Reproduction REDUCE II 1 : 0.865
ratio
ENLARGE I 1 : 1.414
ENLARGE II 1 : 1.154
...
Service Manual - Page 12
Consumables
Toner
Avoid direct sunshine; A4R
A4R
PC770 12 12 12 12 12 9 10
Table 1-101
Model PC740/750
10 10 10 10 10 7 8
PC720 8 8 8 8 8... 810.60 to protect against humidity. keep at 40°C/85% or less. =GENERAL DESCRIPTION
4. about 5 min; PC770 Serial number
Reproduction ratio
Size
Copy paper
DIRECT REDUCE ENLARGE
A4R
A4R
B5R
B5R
A5R
A5R
A4R -, A5R
A5R
II B5R ...
Service Manual - Page 19
.... (The power turns off when the top unit is opened for about 5 min without further key operation, automatically turning off mechanism becomes activated if the copier is finished before the next one transparency on the copyboard, and close the copyboard cover.
3) If you want using the Copy Count/Zoom Set key...
Service Manual - Page 23
.../close lever to the following :
C) Open the right door, and check if
there is out of paper, set in the cassette, go off, and
the copier will make the remaining number of paper if it has torn.
1) Check the multifeeder for a jam. Remove it . Be sure to tear it if any...
Service Manual - Page 24
...Replacing the Cartridge 1) Shift up the open the
body.
see Figure 1-409. A.1.•.
:anon copier. If the copy image has returned to normal, • Advise the user that, although he/she... 1-412
Go through the following: 1) Remove the cartridge from the copier,
and rotate it several times as shown in the copier, and make a copy. CANON PC720840r/501770 REV.OAUG.1994 PRINTEDIN ...
Service Manual - Page 25
...
then, rotate it about 90° several times.
5) Hold the cartridge with the warning label facing up , and insert it into the copier slowly until it stops.
0 7//
Figure 1-416
4) Peel the end of the Open seal of the cartridge, and pull it horizontally with the... straight out toward the front (about 50 cm). Figure 1-418
6) Press down on the mark on the copier's top to close the body.
Service Manual - Page 31
Image exposure)
(7. CANON PC7201740R50M0 REV.O AUG.1994 PRINTEDIN JAPAN OMPRIME AU JAPONI
2 - 1 Transfer 5. Fixing
4. COPYING PROCESS MI
I. IMAGE FORMATION
A. Outline
The copier uses a direct charging/transfer system with each component block arranged as shown in Figure 2-101.
/7
7/
7/
7/
7/ + /7
/7
Z
Scanning lamp
Copyboard glass
Lens array
Side blank exposure lamp (...
Service Manual - Page 32
INN COPYING PROCESS
The copier's image formation block consists of negative charges.
These images created by negative charges are not visible to the white areas of the original are called ...
Service Manual - Page 33
... potential of the photosensitive drum uniform, eliminating the need for the formation of conducting rubber, and an AC bias is charged to a DC bias. The copier uses its primary charging roller to maintain primary potential.
An AC bias serves to the roller in the light area. COPYING PROCESS OM
C. Primary Charging...
Service Manual - Page 34
...)
As shown in a thin, uniform layer. The developing cylinder receives both black and color) made mostly of the developing bias is called developing bias. The copier's toner is moved between the rotating cylinder and the blade.
Development (step 3)
Blade
Developing cylinder
Toner
0
Cylinder}Developing
Magnet cylinder
... DC bias
Positive component Negative...
Service Manual - Page 35
ging. The copier uses a roller transfer system, which has the following advantages when compared with an increased tendency toward ... attracted to the photosensitive drum by the photosensitive drum surface potential and the developing bias
(negative component). F. The copier turns the transfer voltage to positive during initial rotation, while the
scanner is applied to the back of copy paper...
Service Manual - Page 36
... fixing film comes into contact;
Pressure roller
Copy paper
Figure 2-113
After transfer, the toner image is why the copier's fixing assembly does not have a cleaning mechanism.
To prevent such a problem, the copier applies a positive voltage to the separation static eliminator to the paper while the copy paper moves through the fixing...
Service Manual - Page 42
...
switching solenoid (PC750/770)
Side blank exposure lamp
Power switch
00
M2 Scanner/lens drive motor
Figure 3-102
3- 2
COPYRIGHT © 1994 CANONINC. Electrical Circuitry
The copier's major electrical control mechanisms are driven by the microprocessor on the DC controller PCB. =OPERATIONS AND TIMING
B. The microprocessor reads input signals from the sensors...
Service Manual - Page 46
... Controller (2/2)
DC controller PCB
Pick-up clutch solenoid
SL1
Registration clutch solenoid
SL2
Lens drive solenoid
SL3
Cassette/Multifeeder pick-up switching solenoid
SL4
(PC750/PC770)
Scanner/lens drive motor
Side blank exposure lamp (rear)
J109-3 -4
PUSLD*
t +24V
when '0', pick-up switching solenoid turns on.
CANON PC720/74017501170 REVD AUG.1994...
Service Manual - Page 99
FAN
The copier is driven directly by the main motor (WI) by means of the machine. CANON PC72017407501710 Rat) AUG.1994 PRINTEDIN JAPAN (IMPRIME AUJAPON)
3 - 59 OPERATIONS AND TIMING=
V. The fan is equipped with one fan which serves to discharge ozone and cool the inside of a belt
Fan Figure 3-501
COPYRIGHT © 1994 CANON INC.
Service Manual - Page 159
... box, and make sure it in place. RELOCATING THE COPIER
Go through the following steps if you must relocate the copier by truck or other means of copy paper on the power switch, and make sure...the copyboard cover, and tape it will not be subjected to vibration while in transit.
6 Tape the copier's top in place so that DIRECT mode is selected.
2 Turn off the power switch, and disconnect ...
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