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 skoziel563 on April 7th, 2015
Canon Pc720 Copier. Paper Jam.
I found a small fat little spring not attached to anything. Please let me know how and were to attach this spring. I think I know where one end goes but I do not see where the other end goes.
Current Answers
Answer #1: Posted by TechSupport101 on April 8th, 2015 1:39 AM
TechSupport101
Member since:
May 24th, 2013 Points: 12,171,305
Member since:
May 24th, 2013 Points: 12,171,305
There is a Service Manual for the model here 1) http://www.manualslib.com/manual/457679/Canon-Pc720.html or here 2) http://elektrotanya.com/canon_pc720_740_750_770_sm.pdf/download.html which should be able to precisely walk you through the spring re-installation.
Related Canon PC720 Manual Pages
Service Manual - Page 17
... deselects zoom mode. Selects or deselects AE mode.
Selects a default reproduction ratio. GENERAL DESCRIPTIONNM
Ref.
CANON PC720/7401750/770 REV.O AUG.1994 PRINTED IN JAPAN EMPRIME AU JAPON)
1- 9 Name
11 Copy Count/ Zoom Set key
12 Paper Select key
13 Zoom Mode key 14 Default Ratio key
15 AE key
Description Sets a copy...
Service Manual - Page 19
...follows for removal of the jam.)
g. If paper jams, the JAM indicator will flash and copying... ►LTR 78%
I-3- E lBm51"1.- COPYRIGHT © 1994 CANON INC. a. When you press the Zoom key, you want ....power turns off the power.
1.1 Using Transparencies (PC720/740) 1) Shift the delivery guide plate on...auto power-off mechanism becomes activated if the copier is left alone for about 5 min without ...
Service Manual - Page 23
... key. Figure 1-410
4) Pull out any .
GENERAL DESCRIPTIONNM
C. Remove the paper if found.
3) Shift the open/close lever to remove all pieces of paper from inside the machine.
0 Remove the jam with care.
0
Figure 1-411
COPYRIGHT 1994 CANON INC. If there is copy paper. D. CANON PC720/T401759/770 REV.O AUG.1994 PRINTEDIN JAPANRout AU JAPONI
1 - 15 Be...
Service Manual - Page 26
... tend to clean the following parts:
1. If the dirt cannot be soiled or copy paper tends to jam frequently, advise the user to be removed, wipe it .
O
G. b.
Copyboard Glass...the density cor-
then, dry wipe it well.
Cassette pick-up roller has dried completely. CANON PC720/7408EORT0 REVS AUG. 1994 PRINTED IN JAPAN tIMPRIME AU JAPONI Lighte Darker
Figure 1-420
Caution: ...
Service Manual - Page 33
... copier uses its primary charging roller to a uniform negative potential in preparation for pre-exposure. Reference: A direct charging system provides such advantages as low application voltage and generates little, if any, ozone.
The primary charging roller is applied to the roller in the light area.
COPYRIGHT © 1994 CANON INC. COPYING PROCESS OM
C.
CANON PC720...
Service Manual - Page 36
... and can wrap around the photosensitive drum.
this is why the copier's fixing assembly does not have a cleaning mechanism. The temperature of the fixing heater is monitored by the thermistor (TH1) located more or less at the center of the paper. CANON PC720,740/750i770 REY.0 AUG.1994 PRINTEDIN JAPAN DIARIME AU JAPON) Separation...
Service Manual - Page 63
... on the composite power supply PCB to the oscillation/amplitude control circuit. Switching the DC Bias Voltage Level The copier switches the level of voltage taken.
Controlling the DC Bias to a Specific Voltage The DC bias is controlled ...voltage is supplied to whether or not copy images are being formed. CANON PC720/740/750/770 REV.O AUG.1994 PRINTED IN JAPAN omput AU JAPON)
3 - 23
Service Manual - Page 68
... it controls the bias differently from the photosensitive drum because of a jam. Transfer Bias This bias corresponds to the photosensitive drum.
• ...of each time the Copy Start key is moving from the conventional copiers that employ corona charging.
The transfer ATVC bias is a negative voltage.
CANON PC720/74000770 REV.O AUG.1994 PRINTED IN JAPAN pmpFeat AU JAPAN)
...
Service Manual - Page 91
... and, at the
end of the sub thermistor (TH2) falls below 240°C, and a press on within 5 min, and the Copy Start key will not be enabled.
CANON PC720/740/7501770 REV.() AUG. 1994 PRINTED IN JAPAN piPoit AU JAPAN)
3 - 51 Ik!;,,,
,",-i./
011111111111M1,MII
IM0PERATI0NS AND TIMING
5.
Protection Mechanisms The copier is increased (12...
Service Manual - Page 95
... (pick-up delay jam) In multifeeder mode, if copy paper does not reach the registration sensor within this 3-min period (approx.), the copier identifies a pick-up clutch solenoid (SL1) Jam check Registration sensor (Q751) Main motor (M1)
2.1sec
4 normal
Figure 3-421 (normal)
COPYRIGHT © 1994 CANON INC. Absence of time, the copier identifies a jam, stops the main...
Service Manual - Page 96
CANON PC720/74017501/70 REV.O AUG.1994 PRINTEDIN JAPAN (MPRIME AU JAPON)
IMMA OPERATIONS AND TIMING
Copy Start key ON
STBY
INTR
SCFW
Pick-up clutch solenoid (SL1) Jam check Registration sensor (Q751) Main motor (M1)
2.1 sec No paper 1.5 sec
Figure 3-422 (no paper)
Copy Start key ON
STBY
INTR
SCFW
Pick-up clutch solenoid (SL1...
Service Manual - Page 98
... (M1)
3.4 sec
Normal
3.4 sec 4 Jam s1e.5c
Figure 3-427
5.
CANON PC720/740R501770REV.OAUG.1994 PRINTEDIN JAPANDMPRIMEAUJAPON) 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 stationary jam, stops copying operation, and flashes the Jam message. iMMOPERATIONS AND TIMING...
Service Manual - Page 101
...The copier's power switch is a soft switch, and the copier is cut; CANON PC720/14017501770 REVD AUG. 1994 PRINTED IN JAPAN ompRat AU JAPON)
3 - 61 COPYRIGHT © 1994 CANON INC. Power Supply Circuit
The copier's...stored in the capacitor when the power switch is present.
to supply high voltage. The copier's power supply is on . When any of data with a microprocessor for the DC ...
Service Manual - Page 111
SELF DIAGNOSIS
The copier's DC controller PCB is equipped with `E000', `E001', 'E002', or 'E003' has occurred.
faulty) • Thermal fuse (FU1; COPYRIGHT © 1994 CANON INC. CANON PC720/7401750I770 REVD AUG.1994 PRINTED IN JAPAN (imPRimt AU JAPON)
3 - 71 Code
E
Cause
Indicated when the fixing film is less than 100°C.
• The ...
Service Manual - Page 117
... the copier's top unit.
0
0
3) Remove the two screws 3, and remove
the front upper cover ®.
External Covers
Caution:
Remove the covers as necessary to the front upper cover; disconnect the flexible cable from the discussions.
•
1.
CANON PC720/7401150/770...• Multifeeder/singlefeeder cover
Figure 4-102
Figure 4-103
COPYRIGHT © 1994 CANON INC. EXTERNALS
A.
Service Manual - Page 141
Delivery Assembly
1. O
tt c.
CANON PC720/740t7501770 REVS AUG.1994 PRINTEDIN JAPAN (IMPRIME AU JAPON)
4 - 25
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.
e. 2) Remove the screw ®, and remove...
Service Manual - Page 148
...
Figure 4-608 4) Remove the two springs and two
bushings 0, and remove the lower fixing roller CO and the inlet guide ©. Removing the Delivery Roller' under "E. CANON PC720(7401750ITIO ROJO AUG. 1994 PRINTED IN JAPAN (IMPRIME AU JAPAN) MECHANICAL SYSTEM
2. Removing the Lower Fixing Roller 1) Open the copier's top unit. 2) Remove the delivery roller...
Service Manual - Page 156
...indicates 'P', and the Add Paper message flashes. • ...copier's top
f
unit to close.
12 Connect the power cord to the power cord connector.
--------1
------„, 0
13 Connect the power plug to the power • Make sure that the correct ratio is indicated, and press the Copy Count/Zoom key to make sure that 'Yo' is indicated.
5 - 4
COPYRIGHT © 1994 CANONINC. CANON PC720...
Service Manual - Page 163
... have a part to be serviced on a periodical basis.
III.
SCHEDULED SERVICING
The copier has no part that must be replaced on a periodical basis. CANON PC720/140R50M0 REU AUG.1994 PRINTEDIN JAPAN oMPRIME AU JAPON)
6 - 1 MAINTENANCE AND SERVICINGMI
PERIODICALLY REPLACED PARTS
The copier does not have a part classified as a durable or consumable part.
II. COPYRIGHT...
Service Manual - Page 164
... or storing it. Do not keep it inside a car for storage.
1.
POINTS TO NOTE WHEN HANDLING/ STORING THE CARTRIDGE
The cartridge is kept in the copier, and its properties change rapidly;
b. e.g., near refrigerators. CANON PC720.74011501T1R0EV.0 AUG.1994 PRINTEDIN JAPAN (IMPRIME-AUJAPON)
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