Service Manual
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... of copies. CANON PC720174017501770 REV.0 AUG. 1994 PRINTED IN JAPAN omput AU JAPON) CHAPTER 5 "INSTALLATION" gives step-by-step instructions for the following chapters: In CHAPTER 1, "GENERAL DESCRIPTION," a brief discussion of the copier's features, specifications, and an explanation of a general timing chart and general circuit diagrams. A separate document entitled Service Handbook is also available for troubleshooting problems in this manual, Service Handbook, and Service...
... of copies. CANON PC720174017501770 REV.0 AUG. 1994 PRINTED IN JAPAN omput AU JAPON) CHAPTER 5 "INSTALLATION" gives step-by-step instructions for the following chapters: In CHAPTER 1, "GENERAL DESCRIPTION," a brief discussion of the copier's features, specifications, and an explanation of a general timing chart and general circuit diagrams. A separate document entitled Service Handbook is also available for troubleshooting problems in this manual, Service Handbook, and Service...
Service Manual
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... cleaning work to ensure stable copy images. 5. CANON PC7201740/7501770 REV.0 AUG.1994 PRINTED IN JAPAN fMPRIME AU JAPAN) 1 - 1 Designed with considerations for ease in maintenance work. • The photosensitive drum, toner, charging roller, developing assembly, and cleaning assembly are constructed as A4 to make jam removal easy. Integrated cartridge for the environment. • The use of ozone; Uses a SURF fixing assembly. • The use of a charging roller helps...
... cleaning work to ensure stable copy images. 5. CANON PC7201740/7501770 REV.0 AUG.1994 PRINTED IN JAPAN fMPRIME AU JAPAN) 1 - 1 Designed with considerations for ease in maintenance work. • The photosensitive drum, toner, charging roller, developing assembly, and cleaning assembly are constructed as A4 to make jam removal easy. Integrated cartridge for the environment. • The use of ozone; Uses a SURF fixing assembly. • The use of a charging roller helps...
Service Manual
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... Po- Basic Copying Operations 1) Turn on the Copy Start key after supplying paper will automatically make using the multifeeder, press the Paper Select key. 6) Check that the ")/0' notation on the Copy Count/Ratio indicator so that its center is not operated in about 2 sec. You may set the number of copies to automatically turn off mechanism becomes activated to make the remaining number of paper, a press on the power switch. •...
... Po- Basic Copying Operations 1) Turn on the Copy Start key after supplying paper will automatically make using the multifeeder, press the Paper Select key. 6) Check that the ")/0' notation on the Copy Count/Ratio indicator so that its center is not operated in about 2 sec. You may set the number of copies to automatically turn off mechanism becomes activated to make the remaining number of paper, a press on the power switch. •...
Service Manual
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.... CANON PC72017407501770 REV.0 AUG.1994 PRINTED IN JAPAN (IMPRIME AU JAPON) 1 - 11 If paper jams, the JAM indicator will flash and copying operation stops; configuration) r A5 ► A4-0- Figure 1-403 2) Place an original on the singlefeeder. 6) Select the multifeeder using the Copy Count/Zoom Set key; When you want . E lBm51"1.- e. open the top unit. (The power turns off the power. 1.1 Using Transparencies (PC720/740) 1) Shift the delivery guide...
.... CANON PC72017407501770 REV.0 AUG.1994 PRINTED IN JAPAN (IMPRIME AU JAPON) 1 - 11 If paper jams, the JAM indicator will flash and copying operation stops; configuration) r A5 ► A4-0- Figure 1-403 2) Place an original on the singlefeeder. 6) Select the multifeeder using the Copy Count/Zoom Set key; When you want . E lBm51"1.- e. open the top unit. (The power turns off the power. 1.1 Using Transparencies (PC720/740) 1) Shift the delivery guide...
Service Manual
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Making Two-Sided/Overlay Copies You can make two-sided/overlay copies using the multifeeder; O In the case of an overlay copy, only one side may not be used . 0 After the first copy run, cool the paper sufficiently and remove the curl before feeding it for the second copy run , turn over the copy paper and set it as shown in Figure 1-409 ® Overlay Copies Set the first...
Making Two-Sided/Overlay Copies You can make two-sided/overlay copies using the multifeeder; O In the case of an overlay copy, only one side may not be used . 0 After the first copy run, cool the paper sufficiently and remove the curl before feeding it for the second copy run , turn over the copy paper and set it as shown in Figure 1-409 ® Overlay Copies Set the first...
Service Manual
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...; Advise the user that, although he/she may continue to run out of use the cartridge, a new cartridge should be obtained. A.1.•. :anon copier. to ensure sal( in order to open the body. CANON PC720840r/501770 REV.OAUG.1994 PRINTEDIN JAPAN0MPRIMEAU JAPON) functions. hod of toner, the copy image will tend to the instructions under "2. Replacing the Cartridge 1) Shift up the open/close lever...
...; Advise the user that, although he/she may continue to run out of use the cartridge, a new cartridge should be obtained. A.1.•. :anon copier. to ensure sal( in order to open the body. CANON PC720840r/501770 REV.OAUG.1994 PRINTEDIN JAPAN0MPRIMEAU JAPON) functions. hod of toner, the copy image will tend to the instructions under "2. Replacing the Cartridge 1) Shift up the open/close lever...
Service Manual
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GENERAL DESCRIPTION 3) Take out the new cartridge from its bag, and hold it horizontally with the Open label facing up, and insert it into the copier slowly until it stops. 0 7// Figure 1-416 4) Peel the end of the Open seal of the cartridge, and pull it about 50 cm). Figure 1-418 6) Press down on ...the mark on the copier's top to close the body. CANON PCT20/7401150M0 RE© AUG.1994 PRINTEDIN JAPAN twat AUJAPON) 1 - 17 then, rotate...
GENERAL DESCRIPTION 3) Take out the new cartridge from its bag, and hold it horizontally with the Open label facing up, and insert it into the copier slowly until it stops. 0 7// Figure 1-416 4) Peel the end of the Open seal of the cartridge, and pull it about 50 cm). Figure 1-418 6) Press down on ...the mark on the copier's top to close the body. CANON PCT20/7401150M0 RE© AUG.1994 PRINTEDIN JAPAN twat AUJAPON) 1 - 17 then, rotate...
Service Manual
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...* while rotating the roller in density adjustment mode (AE or manual), you may switch among three copy density settings using the Density Correction switch. 1) Shift up . *Be sure to clean the following parts: 1. then, dry wipe it with a moist cloth; O G. b. CANON PC720/7408EORT0 REVS AUG. 1994 PRINTED IN JAPAN tIMPRIME AU JAPONI If Images Are Soiled a. Cassette pick-up roller has dried completely. Copyboard...
...* while rotating the roller in density adjustment mode (AE or manual), you may switch among three copy density settings using the Density Correction switch. 1) Shift up . *Be sure to clean the following parts: 1. then, dry wipe it with a moist cloth; O G. b. CANON PC720/7408EORT0 REVS AUG. 1994 PRINTED IN JAPAN tIMPRIME AU JAPONI If Images Are Soiled a. Cassette pick-up roller has dried completely. Copyboard...
Service Manual
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... AU JAPON) =OPERATIONS AND TIMING B. DC controller PCB Sensor • Scanner home position detection • Lens home 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 4 Composite power supply PCB Q90O H Scanning lamp Fixing heater CPU Highvoltage...
... AU JAPON) =OPERATIONS AND TIMING B. DC controller PCB Sensor • Scanner home position detection • Lens home 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 4 Composite power supply PCB Q90O H Scanning lamp Fixing heater CPU Highvoltage...
Service Manual
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...-1 -2 J2O4-7 J104-1 HTRD Fixing heater drive signal; Scanning lamp FL1 Fluorescent lamp driver Microprocessor > Communication with composite power supply PCB Primary charging roller O Developing cylinder O Transfer charging roller O Static eliminator O Highvoltage circuit 00 Noise filter 00 PCB Door switch +5V +24V tt DC power supply circuit Figure 3-105 COPYRIGHT © 1994 CANON INC. CANON PC72017401750M0 REV.O AUG.1994 PRINTED IN JAPAN ommait...
...-1 -2 J2O4-7 J104-1 HTRD Fixing heater drive signal; Scanning lamp FL1 Fluorescent lamp driver Microprocessor > Communication with composite power supply PCB Primary charging roller O Developing cylinder O Transfer charging roller O Static eliminator O Highvoltage circuit 00 Noise filter 00 PCB Door switch +5V +24V tt DC power supply circuit Figure 3-105 COPYRIGHT © 1994 CANON INC. CANON PC72017401750M0 REV.O AUG.1994 PRINTED IN JAPAN ommait...
Service Manual
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... travel varies depending on the copy paper size and way of mirrors and lenses. INTR (initial rotation) For about 1 sec after the Copy Start key is pressed. • Removes the residual The pick-up signal is picked up. generated, and the first sensitive drum and stabilizes sheet of copy paper is turned on copy paper is moving The scanner is pressed. MINOPERATIONS AND TIMING...
... travel varies depending on the copy paper size and way of mirrors and lenses. INTR (initial rotation) For about 1 sec after the Copy Start key is pressed. • Removes the residual The pick-up signal is picked up. generated, and the first sensitive drum and stabilizes sheet of copy paper is turned on copy paper is moving The scanner is pressed. MINOPERATIONS AND TIMING...
Service Manual
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The scanner motor is turned on the DC controller PCB receives such instructions as copying modes and reproduction ratios from the control panel circuit; The motor drive voltage on /off switching circuit J101 SC-COMA I SC-COMB A A* Microprocessor B B* (Q109) 5V Current switching signal ► Current switching circuit Motor driver circuit SC-A SC-A* Q.9 SC-B SC-B` g M2 Figure 3-207 3 - 16 COPYRIGHT ©...
The scanner motor is turned on the DC controller PCB receives such instructions as copying modes and reproduction ratios from the control panel circuit; The motor drive voltage on /off switching circuit J101 SC-COMA I SC-COMB A A* Microprocessor B B* (Q109) 5V Current switching signal ► Current switching circuit Motor driver circuit SC-A SC-A* Q.9 SC-B SC-B` g M2 Figure 3-207 3 - 16 COPYRIGHT ©...
Service Manual
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... STBY Main motor (M1) Cleaning bias Reference bias (ATVC) Transfer bias sec (approx.) U Figure 3-314 3 - 28 COPYRIGHT © 1994 CANON INC. ration of the transfer roller can change the resistance of a conventional copier, and is moving from the photosensitive drum because of toner to determine the correction value. OPERATIONS AND TIMING F. To remove such toner, the copier applies a positive voltage at...
... STBY Main motor (M1) Cleaning bias Reference bias (ATVC) Transfer bias sec (approx.) U Figure 3-314 3 - 28 COPYRIGHT © 1994 CANON INC. ration of the transfer roller can change the resistance of a conventional copier, and is moving from the photosensitive drum because of toner to determine the correction value. OPERATIONS AND TIMING F. To remove such toner, the copier applies a positive voltage at...
Service Manual
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... of the transfer roller, the copier automatically corrects the application voltage level of copy paper. During initial rotation after the Copy Start key is executed once during copying operation to compensate for the changes in the transfer efficiency caused by the microprocessor on signal and, at all times. The current detection circuit on the composite power supply PCB sends...
... of the transfer roller, the copier automatically corrects the application voltage level of copy paper. During initial rotation after the Copy Start key is executed once during copying operation to compensate for the changes in the transfer efficiency caused by the microprocessor on signal and, at all times. The current detection circuit on the composite power supply PCB sends...
Service Manual
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... fixing heater is on error codes (E000, E001, E002, E003), the copier uses the capacitor (C123) located within the DC controller circuit. CANON PC720/14017501770 REVD AUG. 1994 PRINTED IN JAPAN ompRat AU JAPON) 3 - 61 The DC power supply generates +5 V, +24 VR, and +24 VU for the DC voltage are turned on the condition that an error associated with +5V power...
... fixing heater is on error codes (E000, E001, E002, E003), the copier uses the capacitor (C123) located within the DC controller circuit. CANON PC720/14017501770 REVD AUG. 1994 PRINTED IN JAPAN ompRat AU JAPON) 3 - 61 The DC power supply generates +5 V, +24 VR, and +24 VU for the DC voltage are turned on the condition that an error associated with +5V power...
Service Manual
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... AE adjustment whenever 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 3-701 3) Turn off the AE mechanism, and set the copy density adjusting lever to...
... AE adjustment whenever 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 3-701 3) Turn off the AE mechanism, and set the copy density adjusting lever to...
Service Manual
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... (D; 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 installing the multifeeder unit, select multifeeder mode and make one copy. INSMECHANICAL SYSTEM Caution: When installing the multifeeder unit, go through the following steps: 1) Turn on the power switch...
... (D; 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 installing the multifeeder unit, select multifeeder mode and make one copy. INSMECHANICAL SYSTEM Caution: When installing the multifeeder unit, go through the following steps: 1) Turn on the power switch...
Service Manual
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... the cassette to suit the size of the paper width guide. 16 Set the Test Sheet on the copyboard, and check copying operation. 17 Clean the copier's exterior and the area around it. • Make sure there is no abnormal noise. • Make sure that the copier's ribs are made normally. COPYRIGHT © 1994 CANON INC. INSTALLATIONM Checks/remarks • Make sure that as many...
... the cassette to suit the size of the paper width guide. 16 Set the Test Sheet on the copyboard, and check copying operation. 17 Clean the copier's exterior and the area around it. • Make sure there is no abnormal noise. • Make sure that the copier's ribs are made normally. COPYRIGHT © 1994 CANON INC. INSTALLATIONM Checks/remarks • Make sure that as many...
Service Manual
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Setting Copy Paper Adjust the paper width and length guides inside the cassette to suit the size of copy paper. 1) Slide out the cassette from the copier. 2) Move the paper length guide inside the cassette to suit the width of the copy paper to be used . Figure 5-202 5 - 6 COPYRIGHT © 1994 CANON INC. es Figure 5-201 3) Move the paper width guide inside the cassette to suit the length of the copy paper to be used . "'cis e. CANON PC72084017501770 REVD AUG.1994 PRINTEDIN JAPAN oMPRIMt AU JAPON) ®INSTALLATION B.
Setting Copy Paper Adjust the paper width and length guides inside the cassette to suit the size of copy paper. 1) Slide out the cassette from the copier. 2) Move the paper length guide inside the cassette to suit the width of the copy paper to be used . Figure 5-202 5 - 6 COPYRIGHT © 1994 CANON INC. es Figure 5-201 3) Move the paper width guide inside the cassette to suit the length of the copy paper to be used . "'cis e. CANON PC72084017501770 REVD AUG.1994 PRINTEDIN JAPAN oMPRIMt AU JAPON) ®INSTALLATION B.
Service Manual
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... CANON INC. CANON PC720174011501770 REV.0 AUG.1994 PRINTER IN JAPAN (IMPRIME AU JAPONI 6 - 3 Work quickly when removing jams or replacing the cartridge. 2. d. e. Do not subject the cartridge to light, and the cartridge is left alone thereafter in both directions several times to a level that will not cause any practical problems; Keep the cartridge outside of reach of the sun, in ways not instructed, or toner...
... CANON INC. CANON PC720174011501770 REV.0 AUG.1994 PRINTER IN JAPAN (IMPRIME AU JAPONI 6 - 3 Work quickly when removing jams or replacing the cartridge. 2. d. e. Do not subject the cartridge to light, and the cartridge is left alone thereafter in both directions several times to a level that will not cause any practical problems; Keep the cartridge outside of reach of the sun, in ways not instructed, or toner...