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 JOHNDAY88 on November 28th, 2012
Where Do Put The Toner For The Pc720 Copier
CAN YOU SEND DIAGRAM OF THIS MODEL AND WHERE TO ADD TONER
Current Answers
Related Canon PC720 Manual Pages
Service Manual - Page 3
... Service Manual contains a set of appendixes consisting of a general timing chart and general circuit diagrams.
A separate document entitled Service Handbook is discussed as necessary to the copier;
This Service Manual consists of the following respects:
Model
PC720 PC740 PC750 PC770
Singlefeeding (manual)
- - CANON PC720174017501770 REV.0 AUG. 1994 PRINTED IN JAPAN omput...
Service Manual - Page 19
... count.)
f.
open the top unit. (The power turns off the power.
1.1 Using Transparencies (PC720/740) 1) Shift the delivery guide plate on the copy
tray upright. After copying operation is over..., the
auto power-off mechanism becomes activated if the copier is opened for about 5 min without further key operation, automatically turning off when the top...
Service Manual - Page 23
... paper slowly 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. Figure ...
4) Pull out any . CANON PC720/T401759/770 REV.O AUG.1994 PRINTEDIN JAPANRout AU JAPONI
1 - 15 Removing Jams
The Jam indicator flashes to remove all pieces of copies. Adding Paper
The Add Paper indictor 'P' turns on in ...
Service Manual - Page 33
...on the other hand, serves to directly charge the photosensitive drum (primary charging). CANON PC720/740/150M0 REV.O AUG.1994 PRINTED IN JAPAN pmplatt AU JAPON)
2 - 3 ... system provides such advantages as low application voltage and generates little, if any, ozone. The copier uses its primary charging roller to maintain primary potential.
Image Exposure (step 2)
Optical image
Dark...
Service Manual - Page 36
... (step 6)
Copy paper
O
Fixing heater
Thermistor Fixing film
Toner
Static eliminator
Figure 2-112
Copy paper is a flat heater and heats... © 1994 CANON INC. To prevent such a problem, the copier applies a positive voltage to the separation static eliminator to the film-...and can wrap around the photosensitive drum.
CANON PC720,740/750i770 REY.0 AUG.1994 PRINTEDIN JAPAN DIARIME AU JAPON)...
Service Manual - Page 42
...8226; 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
Highvoltage ... lamps. Electrical Circuitry
The copier's major electrical control mechanisms are driven by the microprocessor on the DC controller PCB.
Service Manual - Page 63
...the composite power supply PCB drives the main transformer (T101) while sending the AC bias on the DC controller PCB. The AC bias...control circuit. c.
Switching the DC Bias Voltage Level The copier switches the level of the DC
bias voltage according to ... constantly monitors the DC voltage. MWAIOPERATIONS AND TIMINGKM
2. d.
CANON PC720/740/750/770 REV.O AUG.1994 PRINTED IN JAPAN omput AU ...
Service Manual - Page 68
... differently from the transfer roller to determine the correction value. b. Cleaning Bias
The copier uses a direct charging method, and could allow adhesion of a jam. Reference Bias...PC720/74000770 REV.O AUG.1994 PRINTED IN JAPAN pmpFeat AU JAPAN)
c. To remove such toner, the copier applies a positive voltage at a specific timing to return the toner from the conventional copiers...
Service Manual - Page 76
...Registration roller
eliminator
Q751
Figure 3-401a (PC720/740)
PS7 Singlefeeder pick-up roller
Cassette pick-up /feeding path; MOPERATIONS AND TIMING
IV. No.
The copier is then moved to the transfer,...along the pick-up roller
Holding plate
3 - 36
COPYRIGHT 1994 CANONINC.
Outline
The copier uses center reference feeding, in which copy paper is discharged to monitor the movement of...
Service Manual - Page 78
...PC720/740's pick-up roller consists
of a cassette pick-up roller and a singlefeeder pick-up roller.
When the pick-up roller starts to these pick-up rollers is switched by the spring clutch, control ring, and pick-up solenoid (SL1). Outline The construction of the copier... turn, serves to the pick-up solenoid turns on the model.
this way, the drive is transmitted to rotate as soon...
Service Manual - Page 91
... retained only
about 1.5 after discharging the ongoing copy; CANON PC720/740/7501770 REV.() AUG. 1994 PRINTED IN JAPAN piPoit AU...while copies are made continuously on the control panel, the copier will make the remaining number of the thermistor (TH1, ...the voltage of copies.
6. In response, the timer circuit sends the relay off the power supply.
Ik!;,,,
,",-i./
011111111111M1,...
Service Manual - Page 98
... 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.
SCFW
... II 4 Normal I
Figure 3-428
Jam sec
3 - 58
COPYRIGHT 1994 CANONINC. CANON PC720/740R501770REV.OAUG.1994 PRINTEDIN JAPANDMPRIMEAUJAPON) Pick-Up Stationary Jam If copy paper does not move past the ...
Service Manual - Page 101
... and uses a single main transfer (T101) to drive the soft switch. Power Supply Circuit
The copier's power supply assembly consists of these codes (E000, E001, E002, E003) occurs, charges are ...;12.5% However, the above values apply on the control panel are between -15% and +10°/0. CANON PC720/14017501770 REVD AUG. 1994 PRINTED IN JAPAN ompRat AU JAPON)
3 - 61 to the DC controller PCB is ...
Service Manual - Page 111
...the fixing film is equipped with `E000', `E001', 'E002', or 'E003' has occurred.
CANON PC720/7401750I770 REVD AUG.1994 PRINTED IN JAPAN (imPRimt AU JAPON)
3 - 71
COPYRIGHT © 1994 CANON... 65°C in particular); crins, • Thermistor (TH1, TH2; SELF DIAGNOSIS
The copier's DC controller PCB is being corrected for displacement. H
Fixing heater (overheating)
EC
Problems ...
Service Manual - Page 117
MECHANICAL SYSTEMINN
I. 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 ®. CANON PC720/7401150/770 REVD AUG.1994 PRINTED IN JAPAN pmPRiut AU JAPAN)
4 - 1 External Covers
Caution:
Remove the covers as necessary to the front upper cover...
Service Manual - Page 134
then, press the Copy Start key. 2) When the pick-up roller unit. (See "1. 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 4-305
3) After...
Service Manual - Page 141
... Roller 1) Open the copier's top unit.
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.
e. 2) Remove the screw ®, and remove the noise filter PCB cover
4) Remove the delivery roller S. CANON PC720/740t7501770 REVS AUG...
Service Manual - Page 148
CANON PC720(7401750ITIO ROJO AUG. 1994 PRINTED IN JAPAN (IMPRIME AU JAPAN) MECHANICAL SYSTEM
2. Figure 4-610
Figure 4-609
4 - 32
COPYRIGHT © 1994 CANON INC. - Removing the ...the two springs and two
bushings 0, and remove the lower fixing roller CO and the inlet guide ©. Removing the Lower Fixing Roller 1) Open the copier's top unit. 2) Remove the delivery roller.
(See "1.
Service Manual - Page 156
... indicates 'P', and the Add Paper message flashes. &#... that the correct ratio is indicated.
5 - 4
COPYRIGHT © 1994 CANONINC.
CANON PC720/740501170 REV.0 AUG. 1994 PRINTED IN JAPAN (IMPRIME AU JAPON) Checks/remarks
11
Push... with care until it stops. INSTALLATION
Step
Work
9 Place the cartridge on the copier's top
f
unit to close.
12 Connect the power cord to the power cord...
Service Manual - Page 164
...- POINTS TO NOTE WHEN HANDLING/ STORING THE CARTRIDGE
The cartridge is placed in the copier, and its properties change over time. The degree of time. After Opening
The photosensitive ... box for a long period of change rapidly; CANON PC720.74011501T1R0EV.0 AUG.1994 PRINTEDIN JAPAN (IMPRIME-AUJAPON) A. The cartridge also contains toner, and it is very important to take care not ...
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