Canon PC720 Support Question
Canon PC720 Support Question
Find answers below for this question about Canon PC720.Need a Canon PC720 manual? We have 1 online manual for this item!
Question posted by sadangoel2002 on January 6th, 2013
How Can I Change The Toner Cartiridge In P>c 720
The photo copier does not stay open Is thare any trick
Current Answers
Answer #1: Posted by tintinb on February 4th, 2013 12:54 AM
tintinb
Member since:
October 26th, 2012 Points: 7,056,560
Member since:
October 26th, 2012 Points: 7,056,560
The best solution for this is to carefully follow the user's manual for the device. This will prevent possible damage to your device if you experiment with this device. If you do not have the manual, you can read/download here at HelpOwl. I have provided the download link below.
- Service Manual (200 Pages)
If you have more questions, please don't hesitate to ask here at HelpOwl. Experts here are always willing to answer your questions to the best of our knowledge and expertise.
Regards,
Tintin
Related Canon PC720 Manual Pages
Service Manual - Page 3
...SYSTEM," the copier's mechanical system is compiled to serve as a handy reference for troubleshooting problems in this manual may be issued as necessary to cover major changes. In ...copier;
Multifeeding (manual)
-
Copying speed (cpm)
8 10 10 12
COPYRIGHT © 1994 CANON INC. INTRODUCTION
This Service Manual contains the basic facts and figures about the plain paper copier PC720...
Service Manual - Page 9
...may simply replace the cartridge and perform simple cleaning work . • The photosensitive drum, toner, charging roller, developing assembly, and cleaning assembly are constructed as A4 to 1/000 of sizes... environment. • The use of ozone; Separate top unit. • The copier's top unit may be opened to limit the generation of the SURF fixing mechanism enables a 0-sec wait time....
Service Manual - Page 12
...number
PC750 Serial number
Maximum
Power consumption
Standby
Copying
0.9 kW or less 0.2 W (approx.; Others
Item
PC720
PC740
Temperature 7.5 to 32.5°C/45.5 to 90.5°F
Operating Humidity environment Atmospheric
pressure
5 to 85...humidity.
about 5 min; keep at 40°C/85% or less.
Consumables
Toner
Avoid direct sunshine; A4R
A4R
PC770 12 12 12 12 12 9 10
Table 1-101
Model ...
Service Manual - Page 19
...automatically turning off mechanism becomes activated if the copier is opened for each transparency delivered to suit the ...PC720/740) 1) Shift the delivery guide plate on the copy
tray upright.
MIN. 70% (Inch- configuration)
r A5 ► A4-0- A4/LTR
B5►A5/STMT
4 ► A5 (AB/Inch- When you press the Zoom key, you press the Default Ratio key, the ratio changes...
Service Manual - Page 23
...copier will make the remaining number of paper if it has torn.
1) Check the multifeeder for a jam.
To remove, pull the paper slowly out of the multifeeder.
2) Open...Remove the paper if found.
3) Shift the open/close lever to the following :
C) Open the right door, and check if
there is ... if paper is set in response to open the body. Adding Paper
The Add Paper indictor 'P' turns...
Service Manual - Page 24
... starts to have white lines or white spots; to ensure sal( in order to open /close lever to tam ,;an. Figure 1-414 2) Slide the old cartridge out of
toner, the copy image will tend to run out of the copier.
0 7I ,sue 0
Figure 1-415
Figure 1-413
2) Set the cartridge in Figure 1-410.
2.
CANON...
Service Manual - Page 26
...it . b. Cassette pick-up roller has dried completely.
O
G.
INNGENERAL DESCRIPTION
F. CANON PC720/7408EORT0 REVS AUG. 1994 PRINTED IN JAPAN tIMPRIME AU JAPONI rection switch.
Lighte Darker
Figure 1-...user to open the
body. 2) Change the position of pick-up the open/close lever to clean the following parts:
1. Cassette Pick-Up Roller 1) Remove the cassette. 2) Open the right ...
Service Manual - Page 33
... provides such advantages as low application voltage and generates little, if any, ozone.
CANON PC720/740/150M0 REV.O AUG.1994 PRINTED IN JAPAN pmplatt AU JAPON)
2 - 3 Image...latent images.
Primary Charging (step 1)
A-Primary corona roller
ti AC bias DC bias
D. The copier uses its primary charging roller to maintain primary potential. The DC bias applied simultaneously with the AC ...
Service Manual - Page 34
... cylinder and a blade, where it .
Development (step 3)
Blade
Developing cylinder
Toner
0
Cylinder}Developing
Magnet cylinder
...
CANON PC72N7401150R/0 REV.O AUG.1994 PRINTED IN JAPAN...developing cylinder receives both black and color) made mostly of magnetite and resins.
The copier's toner is moved between the rotating cylinder and the blade. the resulting bias is greater...
Service Manual - Page 35
.... Transfer (step 4)
Copy paper Transfer charging roller
0
Transfer roller
Figure 2-111
Figure 2-110
A negative voltage is applied to the back of copy paper to transfer toner from the surface of fogging; The copier uses a roller transfer system, which has the following advantages when compared with an increased tendency toward fog-
Service Manual - Page 36
... film and the pressure roller. CANON PC720,740/750i770 REY.0 AUG.1994 PRINTEDIN JAPAN DIARIME AU JAPON) Fixing (step 6)
Copy paper
O
Fixing heater
Thermistor Fixing film
Toner
Static eliminator
Figure 2-112
Copy paper ... or less at the center of the paper. To prevent such a problem, the copier applies a positive voltage to the separation static eliminator to the film-this design eliminates ...
Service Manual - Page 38
AUXILIARY PROCESS
1. IIIIIII COPYING PROCESS
II. Side Blank Exposure Side blank exposure is used to prevent
adhesion of excess toner to the drum by removing the residual potential in the nonimage areas of the drum. CANON PC720/74017501770 REV.O AUG.1994 PAINTED IN JAPAN omPRimt AU JAPON)
See p. 3-35 for details.
2 - 8
COPYRIGHT © 1994 CANON INC.
Service Manual - Page 42
... Film displacement detection • Cartridge color detection • Cassette detection • Singlefeeder pick-up
detection (PC720/740)
Q101
CPU +5V
+24V
4
Composite power
supply PCB
Q90O
H Scanning lamp Fixing heater
CPU
...=OPERATIONS AND TIMING
B.
Electrical Circuitry
The copier's major electrical control mechanisms are driven by the microprocessor on the DC controller PCB.
Service Manual - Page 63
... the DC/AC bias. b. c. Switching the DC Bias Voltage Level The copier switches the level of the AC component and changes the amplitude based on the composite power supply PCB constantly monitors the DC voltage...roller AC bias
P e-heatn -400V
-625V -400V
Figure 3-307
COPYRIGHT O 1994 CANON INC. CANON PC720/740/750/770 REV.O AUG.1994 PRINTED IN JAPAN omput AU JAPON)
3 - 23 MWAIOPERATIONS AND ...
Service Manual - Page 66
... adjustment mode.
0
.miera
cts
'qA
Figure 3-309
See Figures 3-310 through -313 for changes in automatic mode.
3 - 26
COPYRIGHT @ 1994 CANON INC. Controlling the Voltage Level of the DC Bias... to Suit the Copy Density Setting The copier varies the DC bias control
signal (DCBPWM) according to the settings shown below to vary the DC...
Service Manual - Page 68
...copier uses a direct charging method, and could allow adhesion of toner to the transfer
bias of a jam.
To remove such toner, the copier applies a positive voltage at a specific timing to return the toner from the conventional copiers...changes in the copy images caused by changes in the environment or deterio- Outline The copier uses a direct transfer method
with a roller.
CANON PC720...
Service Manual - Page 78
The PC720/740's pick-up roller consists
of a cassette pick-up roller and a multifeeder pick-up roller. The PC750/770's pick-up ... drive transmission; The single feeder pick-up roller rotates whenever the main motor is controlled by the gear unit, which changes the route of the copier's pick-up roller starts to control the copy paper so that it matches the leading edge of the image on the...
Service Manual - Page 91
...timer circuit sends the relay off the power supply. b. CANON PC720/740/7501770 REV.() AUG. 1994 PRINTED IN JAPAN piPoit AU ...keep rising after you have turned on the control panel, the copier will be enabled.
If you turned off . Ik!;,,,
,",-i./
...a specific period of the thermistor (TH1, TH2); Once changed, the distance between sheets and the sub thermistor (TH2) ...
Service Manual - Page 156
... power switch. CANON PC720/740501170 REV.0 AUG....COPYRIGHT © 1994 CANONINC.
Checks/remarks
11
Push the icon on the copier's top
f
unit to close.
12 Connect the power cord to the ...the Default Ratio key to make sure that the ratio mode changes. • Press the Zoom key to make sure that the...on a level surface, and peel the tip of the opening seal, and pull it fully out (about 50 cm...
Service Manual - Page 164
...the copier, and its properties change over...-windows or bright places. e.g., near refrigerators. CANON PC720.74011501T1R0EV.0 AUG.1994 PRINTEDIN JAPAN (IMPRIME-AUJAPON) Storing.... After Opening
The photosensitive medium is important to advise the user to the direct rays of change rapidly; ...Conditions (transportation)
B.
The cartridge also contains toner, and it . Keep the cartridge at ...
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