Canon PC740 Support and Manuals
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Leaves Lot Of Black Dust On The Copy
(Posted by darshan20172 11 years ago)
Canon Pc740. Paper Jamb Message. All Clear Of Any Paper. Still Not Working.
I have a Canon PC740 photo copier. Always worked great. Suddenly now there is a paper jamb message. ...
I have a Canon PC740 photo copier. Always worked great. Suddenly now there is a paper jamb message. ...
(Posted by phillipgregory 12 years ago)
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Popular Canon PC740 Manual Pages
Service Manual - Page 3
... DESCRIPTION," a brief discussion of the copier's features, specifications, and an explanation of replacement parts and consumables. Multifeeding (manual)
-
Copying speed (cpm)
8 10 10 12
COPYRIGHT © 1994 CANON INC. This Service Manual consists of the following respects:
Model
PC720 PC740 PC750 PC770
Singlefeeding (manual)
- - CANON PC720174017501770 REV.0 AUG. 1994 PRINTED IN...
Service Manual - Page 9
... The photosensitive drum, toner, charging roller, developing assembly, and cleaning assembly are constructed as an integrated, single entity-the user may simply replace the cartridge and perform ...copier's top unit may be opened to limit the generation of a charging roller helps to make jam removal easy. GENERAL DESCRIPTION -
Extra touches to business card may be used (manual...
Service Manual - Page 10
...Flat heater
Cleaning
Blade
Original orientation
Center reference (copyboard)
PC770 PC770
1 - 2
COPYRIGHT © 1994 CANON INC. CANON PC720/740/7501770 REV.0 AUG.1994 PRINTED IN JAPAN EMPRIME AU JAPON)
SPECIFICATIONS
1. =GENERAL DESCRIPTION
II. Type
Item
PC720
PC740
Body
Desktop
Copyboard
Fixed
Light source
Fluorescent lamp (19 W)
Lens
Fixed lens array
Photosensitive...
Service Manual - Page 11
...(64 to 80 g/m2), tracing paper (SM-1), colored paper
Copy paper type
Single manual feeding
Plain paper (52 to A5/STM (universal)
Multifeeder tray
5 mm /1.96 ...sided)
width
Left/right 2.5±1.5 mm /0.98±0.59 in . fixed)
*As recommended by Canon.
Performance
Item
PC720
PC740
PC750
PC770
Original type
Sheet, book, 3-D object (2 kg max.)
Maximum original size A4/LGL
...
Service Manual - Page 12
...10
Table 1-101
Model PC740/750
10 10 10 10 10 7 8
PC720 8 8 8 8 8 6 7
1- 4
COPYRIGHT © 1994 CANON INC. PC770 Serial ...number
Reproduction ratio
Size
Copy paper
DIRECT REDUCE ENLARGE
A4R
A4R
B5R
B5R
A5R
A5R
A4R -, A5R
A5R
II B5R -, A5R
A5R
I A5R A4R
A4R
II B5R .- Consumables
Toner
Avoid direct sunshine; =GENERAL DESCRIPTION
4. about 5 min; CANON...
Service Manual - Page 24
...; Advise the user that, although he/she may continue to ensure sal( in the copier, and make a copy. Preface
Thank you (of
toner, the copy image will tend to tam ,;an. hod of the copier.
0 7I ,sue 0
Figure 1-415
Figure 1-413
2) Set the cartridge in order to have white lines or white spots;
Replacing the Cartridge."
1 - 16
COPYRIGHT...
Service Manual - Page 36
...
O
Fixing heater
Thermistor Fixing film
Toner
Static eliminator
Figure 2-112
Copy paper is separated from the photosensitive drum using the rigidity of special material so that the heater is made of the paper. CANON PC720,740/750i770 REY.0 AUG.1994 PRINTEDIN JAPAN DIARIME AU JAPON) To prevent such a problem, the copier applies a positive voltage to...
Service Manual - Page 56
... Current switching
circuit
Motor driver circuit
SC-A SC-A*
Q.9 SC-B SC-B` g M2
Figure 3-207
3 - 16
COPYRIGHT © 1994 CANONINC. the motor driver circuit is used to ...setting.
(Q101)
DC controller PCB
Voltage on/off signal
24V
Motor drive voltage on /off and its direction and speed of rotation; The scanner motor is turned on the DC
controller PCB receives such instructions...
Service Manual - Page 64
.... • controls the voltage level of the DC
bias according to the surface of excess toner to the copy density settings. AC power supply
1 Transformer T101
Transformer T2O1
1=.4 5V
Amplifier
205 -ea
rn
r9i)
Ea
Photosensitive Developing
drum
cylinder
Ampl fier/ rect fier -
o
O
• TcDD.O
al at
8 8
Density correction
swlch (ST101)
AE/intensity...
Service Manual - Page 66
...Setting The copier varies the DC bias control
signal (DCBPWM) according to the settings shown below to vary the DC component voltage, thereby controlling the copy density.
• setting of the density adjusting lever (manual...to the setting of the density adjusting lever in manual mode and to correct foggy images caused by changes in the sensitivity of the three settings by the user, selected to...
Service Manual - Page 105
... No. 10 if you are using NB-3.
• If you
have replaced any of the following parts: • DC controller PCB • Composite power supply PCB • AE/intensity sensor PCB • scanning lamp
Preparing for Adjustment 1) Set the black cartridge in the copier. 2) Set the density correction switch
(SW101) to the center notch.
0
SW101 Figure...
Service Manual - Page 144
..., the copies
can come to prevent such a problem. Cartridge
1. Drum Cover Shutter If the photosensitive drum is closed. it is removed from such light.
4 - 28
COPYRIGHT 1994 CANON INC. Light-Blocking Shutter
Light enters through the image exposure opening when the cartridge is designed to protect the photosensitive drum from the copier; er are housed in a single container...
Service Manual - Page 145
... any practical problems; Do not use a flannel cloth.
3. Reference: If the drum is exposed to light of the drum to soil the...drum using a cloth coated with toner. COPYRIGHT © 1994 CANON INC. Removing the Transfer Charging Roller
1) Open the copier's top unit.
2) Remove the screw T.
1) Open the copier's top body, and remove the cartridge.
2) Put the cartridge upside down, and open the drum...
Service Manual - Page 155
.... Note: Do not touch the roller inside the copier at either end of the copier. INSTALLATIONIIIII Checks/remarks
5 Open the copier, and remove the attachment from its top unit.
6 Pull the two cardboard pieces, located inside the copier.
7 Pick the tab on the cartridge, and pull out the cartridge from the copyboard glass. L=--
--,
Roller
8 Hold the...
Service Manual - Page 165
... quickly when removing jams or replacing the cartridge.
2. If you soiled the surface of the photosensitive drum by residual memory on the copies as toner runs out, hold the cartridge level as 10,000 to avoid exposure. (The direct rays of the sun, in ways not instructed, or toner may disappear when the cartridge is as strong as...
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