Service Manual
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... C. SENSOR CIRCUIT DIAGRAM.... BLANK EXPOSURE (front) CIRCUIT DIAGRAM A-27 L. BLANK EXPOSURE (rear) CIRCUIT DIAGRAM A-28 M. CANON PC720R401750R70 REVD AUG.1994 PRINTEDINJAPAN 0NPRIME AU JAPON) GENERAL CIRCUIT DIAGRAM.. INTENSITY/AE SENSOR CIRCUIT DIAGRAM A-23 H. DURABLES AND ...CONSUMABLES 6-1 III. GENERAL TIMING CHART A-1 B. A-24 I . SOLVENTS/OILS A-30 D COPYRIGHT © 1994 CANON INC. A-3 D. DC CONTROLLER CIRCUIT DIAGRAM A-5 E. NOISE FILTER CIRCUIT DIAGRAM A-25 J. HIGH-VOLTAGE CONTACT CIRCUIT DIAGRAM A-26 ...
... C. SENSOR CIRCUIT DIAGRAM.... BLANK EXPOSURE (front) CIRCUIT DIAGRAM A-27 L. BLANK EXPOSURE (rear) CIRCUIT DIAGRAM A-28 M. CANON PC720R401750R70 REVD AUG.1994 PRINTEDINJAPAN 0NPRIME AU JAPON) GENERAL CIRCUIT DIAGRAM.. INTENSITY/AE SENSOR CIRCUIT DIAGRAM A-23 H. DURABLES AND ...CONSUMABLES 6-1 III. GENERAL TIMING CHART A-1 B. A-24 I . SOLVENTS/OILS A-30 D COPYRIGHT © 1994 CANON INC. A-3 D. DC CONTROLLER CIRCUIT DIAGRAM A-5 E. NOISE FILTER CIRCUIT DIAGRAM A-25 J. HIGH-VOLTAGE CONTACT CIRCUIT DIAGRAM A-26 ...
Service Manual
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...ease in maintenance work to make jam removal easy. CANON PC7201740/7501770 REV.0 AUG.1994 PRINTED IN JAPAN fMPRIME AU JAPAN) 1 - 1 GENERAL DESCRIPTION - Fixed copyboard with a color toner cartridge (red, blue, green, brown); Integrated cartridge for the environment. • The use of sizes... developing assembly, and cleaning assembly are constructed as A4 to 1/000 of ozone; COPYRIGHT @ 1994 CANON INC. I. FEATURES 1. Extra touches to the copies. • The black toner cartridge may be replaced with zooming. • In addition to limit the generation of existing machines) 3....
...ease in maintenance work to make jam removal easy. CANON PC7201740/7501770 REV.0 AUG.1994 PRINTED IN JAPAN fMPRIME AU JAPAN) 1 - 1 GENERAL DESCRIPTION - Fixed copyboard with a color toner cartridge (red, blue, green, brown); Integrated cartridge for the environment. • The use of sizes... developing assembly, and cleaning assembly are constructed as A4 to 1/000 of ozone; COPYRIGHT @ 1994 CANON INC. I. FEATURES 1. Extra touches to the copies. • The black toner cartridge may be replaced with zooming. • In addition to limit the generation of existing machines) 3....
Service Manual
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... rotate it several times as shown in the copier, and make a copy. MIGENERAL DESCRIPTION E. CANON PC720840r/501770 REV.OAUG.1994 PRINTEDIN JAPAN0MPRIMEAU JAPON) When to Replace the Cartridge When the cartridge starts to run out of .lre copier, its capabili• ng this manua ACAUTIO - :...; Advise the user that, although he/she may continue to use . a. Figure 1-414 2) Slide the old cartridge out of use the cartridge, a new cartridge should be obtained. Replacing the Cartridge." 1 - 16 COPYRIGHT © 1994 CANONINC. If the copy image fails to return to normal, • ...
... rotate it several times as shown in the copier, and make a copy. MIGENERAL DESCRIPTION E. CANON PC720840r/501770 REV.OAUG.1994 PRINTEDIN JAPAN0MPRIMEAU JAPON) When to Replace the Cartridge When the cartridge starts to run out of .lre copier, its capabili• ng this manua ACAUTIO - :...; Advise the user that, although he/she may continue to use . a. Figure 1-414 2) Slide the old cartridge out of use the cartridge, a new cartridge should be obtained. Replacing the Cartridge." 1 - 16 COPYRIGHT © 1994 CANONINC. If the copy image fails to return to normal, • ...
Service Manual
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...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 horizontally with the warning label facing up; 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 GENERAL DESCRIPTION 3) Take out the new cartridge from its bag, and hold it straight out toward the front (about 50 cm). Figure 1-417 Figure...
...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 horizontally with the warning label facing up; 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 GENERAL DESCRIPTION 3) Take out the new cartridge from its bag, and hold it straight out toward the front (about 50 cm). Figure 1-417 Figure...
Service Manual
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...; 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 ...The copier's major electrical control mechanisms are driven by the microprocessor on the DC controller PCB. =OPERATIONS AND TIMING B. CANON PC72017050/770 REV.O AUG.1994 PRINTEDIN JAPANRout AU JAPON) The microprocessor reads input signals from the sensors and the operation keys...
...; 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 ...The copier's major electrical control mechanisms are driven by the microprocessor on the DC controller PCB. =OPERATIONS AND TIMING B. CANON PC72017050/770 REV.O AUG.1994 PRINTEDIN JAPANRout AU JAPON) The microprocessor reads input signals from the sensors and the operation keys...
Service Manual
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... voltage lowers. OPERATIONS AND TIMING= C. otherwise, clock signals are generated. Inputs to and Outputs from the DC Controller 1. sensor PS 2 Delivery sensor - CANON PC720R4OfT5O770 REV.O AUG.1994 PRINTED IN JAPAN ompuit AU JAPON) 3 - 3 when temperature of the front end of fixing heater rises, voltage lowers. Inputs to... the DC Controller (1/2) DC controller PCB Scanner home position sensor [PS 1 Lens home position - when PS3 detects paper, '1'; LT sensor (PC720/740) PS 7 Cartridge color sensor - L_I- LT displacement sensor PS 4 Single feeder paper -
... voltage lowers. OPERATIONS AND TIMING= C. otherwise, clock signals are generated. Inputs to and Outputs from the DC Controller 1. sensor PS 2 Delivery sensor - CANON PC720R4OfT5O770 REV.O AUG.1994 PRINTED IN JAPAN ompuit AU JAPON) 3 - 3 when temperature of the front end of fixing heater rises, voltage lowers. Inputs to... the DC Controller (1/2) DC controller PCB Scanner home position sensor [PS 1 Lens home position - when PS3 detects paper, '1'; LT sensor (PC720/740) PS 7 Cartridge color sensor - L_I- LT displacement sensor PS 4 Single feeder paper -
Service Manual
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... original. • controls blank exposure. Copyboard glass \ \Scanning lamp Intensity sensor AE sensor Lens Blank exposure lamp Primary charging rollerj; Developing cylinder Photosensitive drum Z Drum cartridge Cartridge color detection Static eliminator Transfer roller Q101 Microprocessor DC controller PCB fluorescent lamp driver High-voltage circuit 4 O900 Microprocessor Composite power supply PCB Figure 3-301...
... original. • controls blank exposure. Copyboard glass \ \Scanning lamp Intensity sensor AE sensor Lens Blank exposure lamp Primary charging rollerj; Developing cylinder Photosensitive drum Z Drum cartridge Cartridge color detection Static eliminator Transfer roller Q101 Microprocessor DC controller PCB fluorescent lamp driver High-voltage circuit 4 O900 Microprocessor Composite power supply PCB Figure 3-301...
Service Manual
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...scanning lamp has been properly adjusted. Direction of copy paper. • Make sure that gray scale No. 9 is barely visible. COPYRIGHT © 1994 CANON INC. OPERATIONS AND TIMINGINN 2. avoid one with even density; Caution; • Check gray scale No. 10 if you are using NB-3. • ... • 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 ...
...scanning lamp has been properly adjusted. Direction of copy paper. • Make sure that gray scale No. 9 is barely visible. COPYRIGHT © 1994 CANON INC. OPERATIONS AND TIMINGINN 2. avoid one with even density; Caution; • Check gray scale No. 10 if you are using NB-3. • ... • 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 ...
Service Manual
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... power switch, and select 141%. • Press the Copy Start key. • When the lens has moved farthest left . Lamp PCB Figure 4-405 COPYRIGHT 1994 CANON INC. MECHANICAL SYSTEMMI 3. T U 0 0 7) Open the copier's top unit, and remove the four screws C); then, remove the blanking unit C). 0 Figure 4-404 0 0 0 O ...lens is at the farthest left , turn off the power, and disconnect the power plug. 2) Remove the multifeeder assembly. 3) Remove the cartridge. 4) Remove the top cover. 5) Remove the DC controller PCB. 6) Remove the two screws C) from the rear of the composite power supply PCB...
... power switch, and select 141%. • Press the Copy Start key. • When the lens has moved farthest left . Lamp PCB Figure 4-405 COPYRIGHT 1994 CANON INC. MECHANICAL SYSTEMMI 3. T U 0 0 7) Open the copier's top unit, and remove the four screws C); then, remove the blanking unit C). 0 Figure 4-404 0 0 0 O ...lens is at the farthest left , turn off the power, and disconnect the power plug. 2) Remove the multifeeder assembly. 3) Remove the cartridge. 4) Remove the top cover. 5) Remove the DC controller PCB. 6) Remove the two screws C) from the rear of the composite power supply PCB...
Service Manual
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...Cleaning blade Drum cover shutter Developing cylinder Figure 4-501 a. Light-Blocking Shutter Light enters through the image exposure opening when the cartridge is exposed to strong light for a long period of time, the copies can come to open the drum cover shutter without...; Outline The copier's photosensitive drum, primary charging roller, developing assembly, and clean- CANON PC72M40/7501170 REV.O AUG.1994 PRINTED IN JAPAN omPnimt AU JAPAN) CHARGING/DEVELOPING/CLEANING SYSTEM A. Cartridge 1. the drum cover shutter is closed. Drum Cover Shutter If the photosensitive drum is...
...Cleaning blade Drum cover shutter Developing cylinder Figure 4-501 a. Light-Blocking Shutter Light enters through the image exposure opening when the cartridge is exposed to strong light for a long period of time, the copies can come to open the drum cover shutter without...; Outline The copier's photosensitive drum, primary charging roller, developing assembly, and clean- CANON PC72M40/7501170 REV.O AUG.1994 PRINTED IN JAPAN omPnimt AU JAPAN) CHARGING/DEVELOPING/CLEANING SYSTEM A. Cartridge 1. the drum cover shutter is closed. Drum Cover Shutter If the photosensitive drum is...
Service Manual
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... touch the roller surface; take all measures necessary to limit the exposure of the drum using a cloth coated with toner. COPYRIGHT © 1994 CANON INC. Work quickly to avoid exposure. (The direct rays of the bushing, remove the transfer charging roller ©. 3 LZt- Transfer corona Assembly...the Transfer Charging Roller 1) Open the copier's top unit. 2) Remove the screw T. 1) Open the copier's top body, and remove the cartridge. 2) Put the cartridge upside down, and open the drum shutter. 3) Clean the surface of the drum to soil the roller surface. however, take care not to...
... touch the roller surface; take all measures necessary to limit the exposure of the drum using a cloth coated with toner. COPYRIGHT © 1994 CANON INC. Work quickly to avoid exposure. (The direct rays of the bushing, remove the transfer charging roller ©. 3 LZt- Transfer corona Assembly...the Transfer Charging Roller 1) Open the copier's top unit. 2) Remove the screw T. 1) Open the copier's top body, and remove the cartridge. 2) Put the cartridge upside down, and open the drum shutter. 3) Clean the surface of the drum to soil the roller surface. however, take care not to...
Service Manual
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... remove the attachment from its top unit. 6 Pull the two cardboard pieces, located inside the copier. 7 Pick the tab on the cartridge, and pull out the cartridge from the copyboard glass. CANON PC720I74017501770REV.O AUG.1994 PRINTEDIN JAPAN ompRimt AU JAPON) 5 - 3 z_ _- -_----_5-__. and rotate it about 90° in both directions several...
... remove the attachment from its top unit. 6 Pull the two cardboard pieces, located inside the copier. 7 Pick the tab on the cartridge, and pull out the cartridge from the copyboard glass. CANON PC720I74017501770REV.O AUG.1994 PRINTEDIN JAPAN ompRimt AU JAPON) 5 - 3 z_ _- -_----_5-__. and rotate it about 90° in both directions several...
Service Manual
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... a level surface, and peel the tip of the opening seal, and pull it fully out (about 50 cm). 10 Hold the cartridge with the warning label facing up, and insert the cartridge with care until it stops. CANON PC720/740501170 REV.0 AUG. 1994 PRINTED IN JAPAN (IMPRIME AU JAPON) INSTALLATION Step Work 9 Place the...
... a level surface, and peel the tip of the opening seal, and pull it fully out (about 50 cm). 10 Hold the cartridge with the warning label facing up, and insert the cartridge with care until it stops. CANON PC720/740501170 REV.0 AUG. 1994 PRINTED IN JAPAN (IMPRIME AU JAPON) INSTALLATION Step Work 9 Place the...
Service Manual
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CANON PC72017401750/770REV.0 AUG.1994 PRINTED IN JAPAN EMPRIME AUJAPAN) 5 - 7 NSTALLATIONIM III. RELOCATING THE COPIER Go through the following steps if you must relocate the copier ... off the power switch, and disconnect the power plug from the power outlet. 3 Detach the copy tray. 4 Remove the cassette. 5 Remove the cartridge. COPYRIGHT © 1994 CANONINC. 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...
CANON PC72017401750/770REV.0 AUG.1994 PRINTED IN JAPAN EMPRIME AUJAPAN) 5 - 7 NSTALLATIONIM III. RELOCATING THE COPIER Go through the following steps if you must relocate the copier ... off the power switch, and disconnect the power plug from the power outlet. 3 Detach the copy tray. 4 Remove the cassette. 5 Remove the cartridge. COPYRIGHT © 1994 CANONINC. 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...
Service Manual
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POINTS TO NOTE WHEN HANDLING/STORING THE CARTRIDGE 6-2 COPYRIGHT@ 1994 CANONRC COON PertrOVW50770 REV.O AUG.1994 PAINTEDIN JAPAN FALPPoitE AU10040 CHAPTER 6 MAINTENANCE AND SERVICING I. DURABLES AND CONSUMABLES 6-1 III. PERIODICALLY REPLACED PARTS 6-1 II. SCHEDULED SERVICING 6-1 IV.
POINTS TO NOTE WHEN HANDLING/STORING THE CARTRIDGE 6-2 COPYRIGHT@ 1994 CANONRC COON PertrOVW50770 REV.O AUG.1994 PAINTEDIN JAPAN FALPPoitE AU10040 CHAPTER 6 MAINTENANCE AND SERVICING I. DURABLES AND CONSUMABLES 6-1 III. PERIODICALLY REPLACED PARTS 6-1 II. SCHEDULED SERVICING 6-1 IV.
Service Manual
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.../ humidity is organic photoconductor (OPC), and deteriorates when exposed to strong light. POINTS TO NOTE WHEN HANDLING/ STORING THE CARTRIDGE The cartridge is kept in Table 6-401 are respected with care to the effects of the environment regardless of whether it is subject ...of the sun-windows or bright places. Avoid areas subject to the direct rays of time. CANON PC720.74011501T1R0EV.0 AUG.1994 PRINTEDIN JAPAN (IMPRIME-AUJAPON) Storing Without Removing the Seal When storing the cartridge at 40°C or less. 6 - 2 COPYRIGHT 1994 CANONINC. avoid areas subject to vibration...
.../ humidity is organic photoconductor (OPC), and deteriorates when exposed to strong light. POINTS TO NOTE WHEN HANDLING/ STORING THE CARTRIDGE The cartridge is kept in Table 6-401 are respected with care to the effects of the environment regardless of whether it is subject ...of the sun-windows or bright places. Avoid areas subject to the direct rays of time. CANON PC720.74011501T1R0EV.0 AUG.1994 PRINTEDIN JAPAN (IMPRIME-AUJAPON) Storing Without Removing the Seal When storing the cartridge at 40°C or less. 6 - 2 COPYRIGHT 1994 CANONINC. avoid areas subject to vibration...
Service Manual
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...or shocks. Do not subject the cartridge to touch the photosensitive drum. In particular, do not press down . may leak from the developing assembly or the cleaning assembly. Do not open the shutter for the photosensitive drum cover. COPYRIGHT © 1994 CANON INC. e. f. Do not ...ever leave it is exposed to white spots or black bands". CANON PC720174011501770 REV.0 AUG.1994 PRINTER IN JAPAN (IMPRIME AU JAPONI 6 - 3 Keep the cartridge outside of reach of time can still lead to light...
...or shocks. Do not subject the cartridge to touch the photosensitive drum. In particular, do not press down . may leak from the developing assembly or the cleaning assembly. Do not open the shutter for the photosensitive drum cover. COPYRIGHT © 1994 CANON INC. e. f. Do not ...ever leave it is exposed to white spots or black bands". CANON PC720174011501770 REV.0 AUG.1994 PRINTER IN JAPAN (IMPRIME AU JAPONI 6 - 3 Keep the cartridge outside of reach of time can still lead to light...