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 jcr416 on August 7th, 2017
Paper Drawer Is Stuck Closed. How Do I Open It?
I had opened the unit to replace cartridge. Now with or without the old cartridge, the drawer seems to blocked shut.
Current Answers
Answer #1: Posted by waelsaidani1 on August 7th, 2017 2:32 PM
waelsaidani1
Member since:
May 12th, 2013 Points: 19,501,797
Member since:
May 12th, 2013 Points: 19,501,797
Related Canon PC720 Manual Pages
Service Manual - Page 3
... JAPON) INTRODUCTION
This Service Manual contains the basic facts and figures about the plain paper copier PC720/740/750/770, and is discussed as to its operation are expected to be ...available for quick response to functions and timing of replacement parts and consumables.
CHAPTER 3 "OPERATIONS AND TIMING" explains how the copier's electrical and mechanical systems are related to each...
Service Manual - Page 19
...unit is left alone for about 5 min without further key operation, automatically turning off mechanism becomes activated if the copier is opened for each transparency delivered to remove each press:
GENERAL DESCRIPTIONMN
MAX. 141%-0-
100% 10- After copying operation is over, the
auto power-off the power.
1.1 Using Transparencies (PC720... close the copyboard cover.
3) If you want . If paper ...
Service Manual - Page 23
... the machine with care so as not to open /close lever to tear it.
D. Adding Paper
The Add Paper indictor 'P' turns on the multifeeder. 1) Check if paper is paper in .
If there is set in the cassette holder. 3) Press the Copy Start key.
Be sure to the following :
C) Open the right door, and check if
there is...
Service Manual - Page 26
... Correction switch. 1) Shift up . *Be sure to be removed, wipe it . O
G.
CANON PC720/7408EORT0 REVS AUG. 1994 PRINTED IN JAPAN tIMPRIME AU JAPONI
Cleaning
If the images tend to wring it ...If the dirt cannot be soiled or copy paper tends to jam frequently, advise the user to open the
body. 2) Change the position of pick-up the open/close lever to clean the following parts:
1.
...
Service Manual - Page 31
... of copy paper
(Cassette/manual feed)
: Rotation of photosensitive drum
Figure 2-102
COPYRIGHT © t994 CANON INC. Image exposure)
(7. Development)
Delivery
6. CANON PC7201740R50M0 REV.O AUG.1994 PRINTEDIN JAPAN OMPRIME AU JAPONI
2 - 1 Primary charging)
(2. Drum cleaning
(3. Transfer 5. Outline
The copier uses a direct charging/transfer system with each component block arranged as...
Service Manual - Page 36
...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 film ...paper, thereby facilitating separation.
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...
Service Manual - Page 42
...AUG.1994 PRINTEDIN JAPANRout AU JAPON) Electrical Circuitry
The copier's major electrical control mechanisms are driven by the ...position detection • Pre-registration roller paper
detection • Delivery paper detection • Film displacement detection • Cartridge color detection • Cassette detection • Singlefeeder pick-up
detection (PC720/740)
Q101
CPU +5V
+24V
...
Service Manual - Page 43
... LHP
when lens is at home position, '1'. (when light-blocking plate is at PS4, '0')
J113-2 -1 -3
DIG2
SFPD when PS7 detects paper, '1;
OPERATIONS AND TIMING=
C. LJ- PS 3
Fixing film
- LT
sensor (PC720/740) PS 7
Cartridge color sensor
-
when PS3 detects paper, '1';
otherwise, clock signals are generated. (when light-blocking plate is at PS3, '0')
J112-3 -2 -4
+5V
FFD when...
Service Manual - Page 76
...
eliminator
Q751
Figure 3-401a (PC720/740)
PS7 Singlefeeder pick-up roller
Cassette pick-up system consists of the image on the photosensitive drum;
MOPERATIONS AND TIMING
IV. the pick-up roller
Holding plate
3 - 36
COPYRIGHT 1994 CANONINC. Outline
The copier uses center reference feeding, in which copy paper is equipped with three sensors...
Service Manual - Page 78
...The PC750/770's pick-up rollers is transmitted to rotate, copy paper is rotating. When the pick-up roller. Outline The construction of ...PRINTED IN JAPAN EMPRIME AU JAPON) The PC720/740's pick-up roller consists
of the copier's pick-up roller is rotating.
Controlling ... turns on while the main motor is controlled by the gear unit, which changes the route of a cassette pick-up roller and...
Service Manual - Page 91
... 0 1994 CANON INC. Protection Mechanisms The copier is equipped with `E0', i.e., related to prevent overheating at the same time, 'H' is turned on paper of the thermistor (TH1, TH2); The thermistor... or a low temperature error, it has received the fixing heater error signal (HTNG).
CANON PC720/740/7501770 REV.() AUG. 1994 PRINTED IN JAPAN piPoit AU JAPAN)
3 - 51 Checking for...
Service Manual - Page 98
Delivery Stationary Jam If copy paper does not reach the delivery sensor within a specific period of time because of
a feeding problem, the copier identifies a delivery delay jam, stops copying operation, and flashes the Jam message.
CANON PC720/740R501770REV.OAUG.1994 PRINTEDIN JAPANDMPRIMEAUJAPON) Copy Start key
ON
81,
V
STBY INTR
SCFW
SCRV
SCFW
Registration clutch...
Service Manual - Page 117
Removing the Upper Cover
1) Remove the copyboard cover.
•
2) Open the copier's top unit.
0
0
3) Remove the two screws 3, and remove
the front upper cover ®.
disconnect the flexible cable from the discussions.
•
1. CANON PC720/7401150/770 REVD AUG.1994 PRINTED IN JAPAN pmPRiut AU JAPAN)
4 - 1 Covers that may be detached by mere removal of...
Service Manual - Page 134
..., turn off the power switch. then, while
extending the bushing ®, remove the
lower registration roller unit. Removing the Pick-Up Clutch (PC720/740)
1) Remove the top cover. (See "Removing the Top Cover.")
2) Open the copier's top unit, and fix it in position using the grip of the screwdriver (about 30 mm dia.).
000
0
Figure...
Service Manual - Page 141
MECHANICAL.
O
tt c. O°.
0
Figure 4-340
Figure 4-338
3) Push the claws ®, and shift the delivery roller gear unit ®.
3
oa
O
Figure 4-339
COPYRIGHT © 1994 CANON INC.
Removing the Delivery Roller 1) Open the copier's top unit.
Delivery Assembly
1. e. 2) Remove the screw ®, and remove the noise filter PCB cover
4) Remove the delivery roller S. SYSTEMMN
E. ...
Service Manual - Page 144
... opening when the cartridge is designed to protect the photosensitive drum from the copier; You should not open when the cartridge is inserted into the copier and the copier's top unit is provided to open the drum cover shutter without good reason; Outline The copier's photosensitive drum, primary charging roller, developing assembly, and clean- the light-blocking shutter is closed...
Service Manual - Page 148
Removing the Lower Fixing Roller 1) Open the copier's top unit. 2) Remove the delivery roller.
(See "1. Figure 4-610
Figure 4-609
4 - 32
COPYRIGHT © 1994 CANON INC....bushings 0, and remove the lower fixing roller CO and the inlet guide ©. MECHANICAL SYSTEM
2.
CANON PC720(7401750ITIO ROJO AUG. 1994 PRINTED IN JAPAN (IMPRIME AU JAPAN) - Removing the Delivery Roller' under "E.
Service Manual - Page 156
...PC720/740501170 REV.0 AUG. 1994 PRINTED IN JAPAN (IMPRIME AU JAPON) INSTALLATION
Step
Work
9 Place the cartridge on the power switch. the copy count/ratio indicator indicates 'P', and the Add Paper...11
Push the icon on the copier's top
f
unit to close.
12 Connect the power cord to...opening seal, and pull it fully out (about 50 cm).
10 Hold the cartridge with the warning label facing up, and...
Service Manual - Page 159
... the copier by truck or other means of copy paper on the power switch, and make sure it will not be subjected to vibration while in transit.
6 Tape the copier's top... cartridge.
Keep the cartridge in a protective box, and make sure that it will not open while in transit.
7 Place an A4 sheet of transportation:
Step
Work
Checks/remarks
1 Turn on the copyboard glass, and close the...
Service Manual - Page 164
... it has been opened or installed in a protective box for storage.
1. e.g., near refrigerators. Keep the cartridge at the workshop or the like, make sure that the cartridge is very important ...; to 40°C/-4° to shocks or
drop it is placed in the copier, and its properties change over time. A. The cartridge should never be placed under the sun or inside a car for a long ...
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