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1. Figure 3 303B 3 12 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 4 IMAGE FORMATION SYSTEM This chapter outlines the machine s image formation system in relation to mechanisms and functions relationship between electrical and mechanical systems and the timing of operation of respective parts PROCESS DESCRIPTION 4 1 F Document Density Measurement As QUINE ases 4 1 AE PC420 430 FC220 4 14 B Sequence of Image Formation Il CHARGING DEVELOPING AND Operations A4 2 copies 4 2 CLEANING SYSTEMS 4 17 C Primary Charging Control Circuit A Cartridge 4 17 TP HEN EUER 4 3 IIl MECHANICAL SYSTEM 4 18 D Controlling Developing Bias 4 6 A Photosensitive Drum 4 19 E Transfer Charging Control Circuit B Transfer Charging Roller 4 20 E 4 10 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHPTER 4 IMAGE FORMATION SYSTEM Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON PROCESS DESCRIPTION A Outline
2. Copy Start key ON Copy paper inserted PC400 FC200 Power switch ON 4 CBRV Sequence STBY INTR COPY LSTR Copyboard CBRV STOP CBFW CBRV CBFW STOP 1 Main motor M1 2 Scanning lamp 2 Sec LA1 LA8 3 Primary AC bias 4 Primary DC bias _______ Transfer 5 charging n Copyboard drive solenoid SL2 __ 7 Pick up solenoid Registration solenoid 9 Registration roller Fixing heater bs H1 PC420 430 FC220 PCA400 FC200 Figure 2 101C COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 2 3 CHAPTER 2 BASIC OPERATION Period Description Remarks STBY Standby Between when the copier is switched ON and when the Copy Start key is pressed Between when LSTR is over and when the Copy Start key is pressed Waits for a press on the Copy Start key INTR Initial Rotation For about 6 sec after STBY is over Executes pick up Removes residual charge from the photosensitive drum and stabilizes the drum sensitivity in preparation for copying operation The copyboard moves from the home position to the start position CBFW Copyboard Forward While the copyboard is moving forward abo
3. oo ante 22 es Caution The scanning lamp is adjusted at the factory with high precision to ensure the best intensity of light if necessary replace it as part of the scanning lamp unit see Figure 3 302A Figure 3 302A 3 10 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 3 EXPOSURE SYSTEM B Copyboard Drive Assembly 1 Detaching the Copyboard Drive Assembly Take out the fixing assembly 2 Remove the screw and remove the grounding wire D remove the screw and remove the motor rotation detecting PCB 2 then disconnect the four connectors 3 x 3 Remove the screw 2 and detach the cartridge support 5 Figure 3 302B Note Take extra care not to damage the teeth of the gear when lifting the copyboard drive assembly COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 3 11 CHAPTER 3 EXPOSURE SYSTEM 4 Remove the four screws 5 MAX8 yellow 6 M3X6 white and detach the copyboard drive assembly as if to lift it
4. 1 11 NAMES OF PARTS 1 4 2 Replacing the Cartridge 1 12 A External View 1 4 Changing the Density 1 14 B Cross Section 1 5 OIBahlhif uoces peteret 1 14 IV OPERATION cisco Epi 1 6 1 Copyboard Glass Copyboard A Control Panel 1 6 gt T 1 14 1 PC420 430 FC220 1 6 2 Lens 1 15 2 400 200 1 7 3 Pick Up Roller 1 16 B Making Copies 1 8 H When Not Using the Copier for a C Jam Indicator 1 11 Long Time 1 16 D Add Paper Indicator 1 11 V IMAGE FORMATION 1 17 E Replacing the Cartridge 1 11 Bo suae ane ono 1 17 CHAPTER 2 BASIC OPERATION BASIC OPERATION 2 1 1 Inputs to DC Controller 1 2 As OUM ris MER UE 2 6 B Outline of Electrical Circuit 2 2 2 Inputs to DC Controller 2 2 C Basic Sequence of Operations 2222245 2 7 4 2 2 3 Outputs from DC Controller 2 8 D Main Motor Control Circuit 2 5 1 Outputs from DC Controller 1 RE 2 5 V2 Hc 2 8 2
5. Copyboard drive gear t Reversing gear gt S Forward Reverse switching Q mechanism Reverse M1 Main motor Copyboard drive solenoid SL2 Figure 3 104B COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 3 5 EE CHAPTER 3 EXPOSURE SYSTEM c Moving the Copyboard Forward When the copyboard has moved in reverse and is positioned as shown in Figure 3 105B the start position cam pushes down the copyboard position sensor lever When SL2 goes ON in this position the forward reverse switching mechanism moves to the position shown in the figure causing the forward reverse switching mechanism to engage with the forward gear as a result the forward gear rotates in the direction of the arrow moving the copyboard forward Copyboard drive gear t gt Forward gear FN Forward Forward Reversal S ET switching D usum mechanism position 1 Copyboard drive solenoid 512 Figure 3 105B 3 6 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 3 EXPOSURE SYSTEM
6. Thermal fuse 2 FU2 J101 hap 6 H1 10 See Chap 6 Fixing heater Thermal fuse 1 LA1toLA8 J906 FU1 J108 1 1 Scanning lamp O D 2 2 See Chap 3 Lamp PCB i 24V 1903 1201 1 5j Main motor m1 a 4 When 0 main motor goes ON High voltage See Chap 4 output Figure 2 101F 2 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON N CHAPTER 2 BASIC OPERATION 2 Outputs from DC Controller 2 2 a b PC420 430 FC220 DC controller DC power supply PCB J901 J201 24V Pick La e SL1 2 6 solenoid PUSD When 0 SL1 goes ON 1902 1 3 drive SL2 32 solenoid lt CBSD When 0 512 goes ON voltage to SL2 is switched between 24V and 15V to ensure stable operation Figure 2 102F PC400 FC200 DC controller DC power supply PCB 901 1201 1 24 1 EE Registration ion id id 2 6 4 RGSD 0 solenoi RGSD When 0 SL1 goes ON 1902 101 24 Copyboard 1 drive SL2 2 8i solenoid 4CBSD When 0 SL2 goes ON voltage to SL2 is switched between 24V and 15V to ensure stable operation Figure 2 103F COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRIN
7. DC controller DC power supply PCB 5 1 SW2 OFO Q O O 1103 SW606 bottom lightens T top darkens san a gt 601 DGT 2 Oscillation signal output 1 21 Press on any key or density J601 1202 KEXP correction switch allows input HE 2 of oscillation signal PC420 430 FC220 only __ SW601 iL D __ SW602 J601 1200 1 419 4 DGT 0 51 603 J601 Oscillation signal output n PC420 430 FC220 onl et CICS _ 45 amp par 1 y 1510605 AE 1601 202 T 14 10 98 4 gt PWSON When 0 power switch goes ON jeo pp OV a 4 21 16 PE VR601 Bla if 601 13 8 202 10 Turning density adjustment dial varies 601 22 17 12021 voltage turn to darken brings it closer to OV T Control panel PCB Note The pin No in parentheses refers to the PC400 FC200 Figure 2 101E COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON N CHAPTER 2 BASIC OPERATION 2 Inputs to DC Controller 2 2 DC controller DC power supply PCB Delivery detection PCB Delivery
8. 2 5 2 Outputs from DC Controller 3 Overcurrent Sensor 2 5 2 2 Pert 2 9 E Inputs to DC Controller 2 6 CHAPTER 3 EXPOSURE SYSTEM EXPOSURE COPYBOARD DRIVE ON and 3 8 o3 l re 3 1 2 Controlling the Intensity of the A Outline of Exposure System 3 1 Scanning Lamp 3 8 B Copyboard Drive System 3 1 C Controlling the Intensity of the As SU i r 3 1 Scanning Lamp VR604 3 8 2 Controlling the Copyboard IIl MECHANICAL SYSTEM 3 9 DNE 3 3 A Scanning System 3 10 3 Mechanism of Copyboard 1 Detaching the Scanning Lamp Drive Assembly 3 4 mete 3 10 Controlling the Scanning Lamp 3 7 B Copyboard Drive Assembly 3 11 A 3 7 1 Detaching the Copyboard 3 8 Drive Assembly 3 11 1 Turning the Scanning Lamp COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON ii CHAPTER 4 IMAGE FORMATION SYSTEM PROCESS DESCRIPTION 4 1 As riot 4 1 B Sequence of Image Formation Operations A4 2 copies 4 2 C Primary Charging Control Circuit ucc MET 4 3 14 Quillfigs 4 3 2 Operations
9. Figure 5 4020 A4 E Paper is present at the pick up or delivery sensor at time of power on or when the Copy Start key is pressed COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 5 9 ENS CHAPTER 5 PICK UP FEEDING SYSTEM V MECHANICAL SYSTEM Here the copier is discussed in terms of its mechanical characteristics and operation and how to disassemble and assemble it Be sure to observe the following for disassembly assembly work 1 Disconnect the power cord for safety before disassembly or reassembly work 2 Unless otherwise noted reassembly is the reverse of disassembly 3 Group the screws by type length and diameter and location 4 One of the mounting screws used on the rear cover is provided with a washer to protect against static electricity Be sure to keep the washer with the screw when mounting the cover 5 The fixing screw for the grounding wire and varistors is fitted with a washer to ensure electric continuity be sure to use the washer for reassembly 6 If possible avoid operating the machine with any of its parts removed 5 10 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C HA PT ER 5 PICK UP FEEDING SYSTEM A Pick Up Roller Assembly 1 Detaching the Pick Up Roller a 420 430 220 1 Detach the body cover 2 Disengage the ho
10. 9 3 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 9 MAINTENANCE AND SERVICING Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 9 MAINTENANCE AND SERVICING PERIODICALLY REPLACED PARTS The machine does not have parts which must be replaced on a periodical basis Il DURABLES The machine does not have parts which are classified as durables Ill PERIODICAL SERVICING The machine does not have parts that require periodical servicing COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 9 1 CHAPTER 9 MAINTENANCE AND SERVICING IV NOTES ABOUT CARTRIDGE The cartridge is affected by the environment regardless of whether it is sealed or unsealed and installed in the machine or otherwise Although the properties of the cartridge change over time independent of how many copies have been made the degree of care taken for the cartridge affects how long it may remain stable A Storing Sealed Cartridges When storing the cartridge in a warehouse or workshop make sure the place is controlled to the specifications shown in Table 9 401A a Avoid direct rays of the sun b Avoid areas subjected to appreciable vibration c Do not drop or subject it to impact Normal
11. or 7 11 Supply CIFCLL icac enn 7 2 D Control Panel PCB 7 14 Il MECHANICAL SYSTEM 7 3 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON INN CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS POWER SUPPLY A Outline indi AC line Power switch SW604 1 0 0 0 0 Door switch Delivery door SW1 switch SW2 FU102 DC5VL Sub power 4 supply Relay E RL101 1 ACdriver Fixing heater Pr 01 Lamp drive 24VU HO assembly Scanning lamp HVT Charging roller assembly Developing cylinder A Motor driver Main motor M1 assembly DC power m supply TERR DC load assembly Solenoids etc 5 gt Control panel T106 Main transformer Sensor Photointerrupter DC controller DC power supply PCB Figure 7 101A COPYRIGHT 1998 CANON
12. 080 210 220 SERVICE MANUAL REVISION 0 JAN 1998 FY8 13F2 000 COPYRIGHT 1998 CANON INC CANON 400 420 430 200 220 REV 0 JAN 1998 PRINTED IN PAN IMPRIME AU JAPON IMPORTANT THIS DOCUMENTATION IS PUBLISHED BY CANON INC JAPAN TO SERVE AS A SOURCE OF REFERENCE FOR WORK IN THE FIELD SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS AND MAY CONTAIN INFORMATION NOT APPLICABLE TO CERTAIN AREAS COPYRIGHT 1998 CANON INC Printed in Japan Imprim au Japon Use of this manual should be strictly supervised to avoid disclosure of confidential information Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION CANON INC 5 1 Hakusan 7 chome Toride shi Ibaraki 302 Japan COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON INTRODUCTION This Service Manual provides information needed to service the plain paper copiers FC200 PC400 120V model FC220 PC420 120V model and PC430 LGL model in the field The FC200 PC400 differs from the FC220 PC420 PC430 for the following M
13. 4 Remove the two screws 3 and remove the heat exhaust fan 4 5 Remove the two screws 7 and turn the upper stay 8 in the direction of the arrow to remove Figure 6 209A 6 10 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM 6 Disconnect the connector 9 and remove the fixing upper unit 00 4 Detaching the Pressure Roller 1 Detach the fixing upper unit Note Take care not to damage the pres sure roller by the separation claw or inlet guide when detaching it 2 Detach the pressure roller as if to Figure 6 211A lift it COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 6 11 CHAPTER 6 FIXING SYSTEM 6 12 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS This chapter outlines the machine s auxiliary system in relation to mechanisms and functions relationship between electrical and mechanical systems and the timing of operation of respective parts Ll POWER SUPPLY 7 1 A External Covers 7 4 A Outline 7 1 B Assembly 7 9 B Power Supply PCB 7 2 C DC Controller DC Power Supply C Protection Mechanism for Power
14. COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING Checks YES NO Remedies Does the copying operation start YES Check the operation with with the copyboard at the left or the copyboard moved to right the center advise the user that this is not the copier s problem Does the copyboard move in See The copyboard fails reverse In addition does it to move move in reverse far too slowly DC controller DC Does the copyboard move in Replace the DC con power supply PCB reverse after copying operation troller DC power supply has started and move forward PCB after it has reached the copy board start position Copyboard drive Check the copyboard assembly position sensor Q902 Copyboard glass Try replacing the copy assembly board drive assembly Check the start position cam and reversal cam in the copyboard glass assembly Cause Checks YES NO Remedies Control panel PCB Replace the control panel PCB YES Is the problem corrected DC controller DC NO Check the harness from power supply PCB the control panel PCB to the DC controller DC power supply if normal replace DC power supply PCB COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 25 EE CHAPTER 10 TROUBLESHOOTING Cause C
15. 4 4 D Controlling Developing Bias 4 6 Tu Outline iios 4 6 2 Operations 4 8 E Transfer Charging Control Circuit lui PIDE E DMIEENLIDU 4 10 Te sainte eed 4 10 2 lt 4 11 F Document Density Measurement PC420 430 FC220 4 14 EEG UI 4 14 2 4 14 3 Adjusting the AE Mechanism VR602 VR603 4 15 Il CHARGING DEVELOPING AND CLEANING SYSTEMS 4 17 A 4 17 1 Outline 4 17 IIl MECHANICAL SYSTEM 4 18 A Photosensitive Drum 4 19 1 Cleaning the Drum 4 19 B Transfer Charging Roller 4 20 1 Cleaning the Transfer Charging Roller 4 20 2 Detaching the Transfer Charging Roller 4 20 CHAPTER 5 PICK UP FEEDING SYSTEM lt OUTLINE ai aite etm ties 5 1 Il CONTROLLING THE PICK UP estote 5 2 A PC420 430 FC220 5 2 B PC400 FC200 5 3 CONTROLLING THE REGISTRATION ROLLER 5 4 A Outline oett ertet 5 4 B Pick Up Feeding Timing Chart A4 2 5 5 IV CHECKING FOR 5 5 6 A Delivery Delay 5 6 1 PC420 430 FC220 5 6 2 200
16. CHAPTER 10 TROUBLESHOOTING Ill IMAGE TROUBLESHOOTING A Making Initial Checks 1 Site Environment The voltage of the power source must be within the specifications Avoid areas subjected to dust or high temperature humidity near water faucets water boilers humidifiers and areas near open fires Avoid areas subjected to ammonium gas Avoid direct rays of the sun otherwise provide curtains Make sure the site is well ventilated Make sure the floor is level Check the site to see if it meets the above requirements 2 Checking the Documents You must first check to see if a particular problem may not be due to the document used a The copy density reading should be 5 5 1 5 black 4 5 1 5 color b Some backgrounds i e yellow shades tend to produce copies with poor contrast c Diazo copies or translucent documents tend to produce copies that may be mistaken for foggy copies d Documents prepared in light pencil tend to produce copies that may be mistaken for light copies COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 11 CHAPTER 10 TROUBLESHOOTING 3 Checking the Copyboard Cover and Copyboard Glass for Dirt and Scratches If dirt is found clean it using mild detergent or alcohol if scratches are found replace it 4 Checking the Lens Array for Dirt Check the lens array for dirt If found clean it using
17. 5 6 B Delivery Stationary Jam 5 7 1 PC420 430 FC220 5 7 2 PCA400 FC200 5 7 C Pick Up Delay Jam PC420 430 FC220 5 8 D Pick Up Stationary Jam 5 9 1 PC420 430 FC220 5 9 2 PCA400 FC200 5 9 E Paper is present at the pick up or delivery sensor at time of power on or when the Copy Start key is pressed 5 9 V MECHANICAL SYSTEM 5 10 A Pick Up Roller Assembly 5 11 1 Detaching the Pick Up Roller 1 Detaching the Registration Roller Assembly 5 14 C Removing the Separation Pad CHAPTER 6 FIXING SYSTEM l OUTLINE OF OPERATIONS 6 1 Outline titi teet nes cea ke 6 1 B Controlling the Fixing Heater Temperature 6 3 C Controlling the Supply Power to the Fixing Heater 6 3 D Protection Mechanisms 6 5 Il MECHANICAL SYSTEM 6 6 A Fixing Assembly 6 7 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 Gonslr ctloni oos 6 7 2 Detaching the Fixing Assembly 6 7 3 Removing the Fixing Upper 6 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS l POWER 0 7 1 5 Detaching the Bottom Cover A O
18. Thermistor TH1 TH2 Is the resistance between the following terminals on the control panel PCB 0 0 or about 1 3 M Q 0603 1 lt gt J603 2 Replace the fixing assembly Fixing assembly DC controller DC power supply PCB COPYRIGHT 1998 CANON INC Replace the fixing assembly Is the problem corrected End CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Replace the DC controller DC power supply PCB 10 29 ENS CHAPTER 10 TROUBLESHOOTING V TROUBLESHOOTING PAPER FEED PROBLEMS A Copy Paper Jams Jams can be classified according to location within the copier D Pick up assembly 2 Separation feeding assembly 3 Fixing delivery assembly The discussions that follow are organized with reference to these assemblies 2 Figure 10 501A 10 30 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 1 Pick Up Assembly Cause Checks YES NO Remedies Copy paper Try copy paper of a type recommended by Canon Is the problem corrected YES Advise the user to use recommended paper Is the copy paper curled or wavy or otherwise deformed Replace the copy paper advise the user on the correct method of storage
19. after copying operation has started The maximum supply power is detected for about 5 sec after the temperature of the fixing heater has reached 150 C Note If an error associated with is detected is displayed PC420 430 FC220 or the Jam indicator PC400 FC200 remains ON for about 0 5 sec thereafter the power goes out 10 40 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING Il Cause Description Copyboard drive assembly The copyboard position sensor Q902 faulty operation goes ON when copying operation starts Copyboard drive solenoid The copyboard position sensor Q902 SL2 faulty is ON 0 8 sec after copying operation Copyboard position sensor PCB has started Q902 faulty The copyboard position sensor Q902 DC controller DC power supply PCB does not go ON within 5 5 sec after faulty copying operation has started The copyboard does not reach the start position within a specific period of time or it moves past the start position The copyboard position sensor Q902 is ON 1 5 sec after the copyboard has started moving forward from the start position The copyboard position sensor Q902 does not go ON 10 4 sec after the copyboard has started moving forward from the start position The copyboard position sensor Q902 does not go ON 1 2 sec or 4 7 sec
20. on the control panel DC controller DC power supply PCB A A A 5 ei Gg 2 5 5 o gt o uw gt v 2 58 5 9 BS 5 S BUE a Qo g 6 a s E Q 3 Control 5 8 Eo 5 solenoid Y 5 p d p p pit pg o SL1 S Pick up clutch 5 0 Photo Registration clutch Pick up 2 sensitive n roller drum Registration roller DENM Tj ve Pick up sensor 0131 Delivery Pick u Sensor roller Q801 t Registration egistration roller Spring clutch Solenoid SL1 3 Registration clutch ex 9 Main motor Pick up sensor Q131 PC400 FC200 Figure 5 101 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 5 1 ENS CHAPTER 5 PICK UP FEEDING SYSTEM Il CONTROLLING THE PICK UP ROLLER A PC420 430 FC220 The pick up roller is controlled by a spring clutch control ring and pick up solenoid SL1 When the pick up solenoid goes ON the claw moves away from the control ring allowing the drive from the main motor M1 to be transmitted causing the pick up roller to make a single r
21. x pate a vinder M MEME w Transfer charging roller N Static eliminator Pressure roller Figure 1 501A The copier is an indirect photorepro _ Latent static Image Formation graphic system constructed as shown in Figure 1 501 Primary charging Image exposure The image formation process con sists of seven steps as discussed below MEE i Step 1 Primary charging negative Step 2 Image exposure Step 3 Development AC and bias Step 4 Transfer negative Delivery 6 Fixing 5 Separation Step 5 Separation lt Flow of copy paper Step 6 Fixing lt Rotation of drum Step 7 Drum cleaning Figure 1 502A The photosensitive drum has a layer construction the photoconductive layer on the outside and the conductive alu minum base inside Photoconductive layer Aluminum base Figure 1 503A COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 17 CHAPTER 1 GENERAL DESCRIPTION 1 18 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 2 BASIC OPERATION This chapter outlines the machine s basic mechanisms and functions relationship between electrical and mechanical systems and the timing of operation of respective parts BASIC OPERATION 2 1 D Main Motor Control Circu
22. Developing bias DC component V Figure 4 103D Automatic Density Control PC420 430 FC220 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 7 CHPTER 4 IMAGE FORMATION SYSTEM 2 Operations Figure 4 104D shows the circuit that controls the developing bias and the circuit has the following functions Turns the developing bias AC component ON and OFF Turns the developing bias DC component ON and OFF Controls the voltage level of the DC bias according to the settings made by the copy density dial lever a Turning the Developing Bias AC Component ON and OFF 0 pulse output OFF T104 goes OFF The above condition deprives the developing cylinder of the AC bias ACBTP 1 pulse output ON T104 goes ON The above condition raises the AC bias output using the high voltage transformer T104 and sends it to the developing cylinder b Turning the DC Bias ON and OFF and Controlling the Voltage Level The DC bias is turned ON and OFF by the DC bias control command DCBPWM The microprocessor checks the DC voltage when the DC bias is ON so as to keep it to the specified voltage a DCBPWM 0 DC bias OFF ET goes ON bias goes OFF b DCBPWM 1 DC bias ON 46 bias goes ON The voltage level of the DC bias is controlled by varying the pulse width of the DC bias control command DCBPWM While th
23. Fixing heater zu 9 overheating sensor 5V Mn Ne ees neh intel 1 5V l gt m Thermal fuse 228 FU2 NU mE EN EN l 1 5 2 o e 87 Fixing Thermistor signal 1 1 1 TIT Fixing heaten temperature sensor MEME Fixing heater drive command HTRD DC controller DC power supply Figure 6 101A Fixing film Fixing heater Main motor Pressure roller Figure 6 102A 6 2 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM B Controlling the Fixing Heater Temperature The target temperature for the fixing heater is controlled to four settings 155 165 175 185 C by the microprocessor based on the following conditions a Temperature of the fixing heater at time of power on 185 C if 90 C or less 165 C if otherwise b Temperature of the fixing heater at time of copy start 185 C if 90 C or less as needed to suit the number of copies made if otherwise c Number of copies made 185 C if copy 175 C if for 2 to 4 copies 165 C if for 5 to 15 co
24. Is the scanning lamp ON during copying operation YES Check if the cartridge is set properly NO See The scanning lamp fails to go ON 10 23 ENS CHAPTER 10 TROUBLESHOOTING IV TROUBLESHOOTING MALFUNCTIONS A Troubleshooting Malfunctions 1 diagnosis PC400 FC200 Checks YES NO Remedies Cause Switch the copier ON Does the Jam indicator remain On for about 0 5 sec and does the copier go OFF automatically thereafter Checks YES See E00 NO YES NO See the discussions on E2 E6 and E9 Remedies Thermistor TH1 Set the meter to the 12VDC range and wait until the fixing heater is sufficiently cool Measure the voltage between J603 1 and J603 2 Is it about 3 2 V or more NO Check the wiring from the DC controller DC power supply PCB to the ther mistor TH1 if normal replace the fixing assem bly DC controller DC power supply PCB Fixing assembly 10 24 Does the fixing heater operate normally Switch the copier ON and make a copy Measure the voltage between J603 1 and J603 2 once again Is the voltage lower than that measured in step 1 See The fixing heater fails to operate Replace the DC controller DC power supply PCB Check the wiring from the DC controller DC power supply PCB to the ther mistor TH1 if normal replace the fixing assem bly
25. after the copyboard has started moving in reverse from the reversal position Control panel PCB faulty The scanning lamp has remained for 2 DC controller DC power supply PCB sec continuously at such times as not faulty prescribed Power supply frequency error The power supply frequency is higher than specified Note 1 The copier does not use code E4 or ED 2 After self diagnosis has gone ON the copier may be reset by switching it OFF and then ON In the case of EO however the power is automatically turned OFF To reset disconnect the power plug once open the upper cover or wait about 5 minutes without any operation during the period the microprocessor remains powered and retains EO This consideration is to prevent the user from resetting the machine easily when the thermistor may have blown otherwise the fixing heater would become overheated damaging parts near it 3 Activation of self diagnosis forces the fixing heater H1 and main motor M1 OFF COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 41 CHAPTER 10 TROUBLESHOOTING 10 42 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON APPENDIX A GENERAL TIMING CHART A 1 D SPECIAL TOOLS TABLE B SIGNALS ABBREVIATIONS LISTA 3 E SOLVENTS OILS TABLE
26. 0 to 35 C 9 10 of period 32 to 95 F Severe 1 10 135 to 40 C of period 95 to 1049 Low 20 to 0 C 4 to 32 F Temperature Temperature fluctuations 40 15 C within about 3 min 104 gt 59 F 20 C gt 25 C 4 gt 77 F Normal 35 to 85 RH 9 10 of period Severe 1 10 High 85 to 95 RH of period Humidity Low 10 to 3596 RH Atmospheric pressure 460 to 760 mmHg 0 1 to 1 atm Table 9 401A Temperature Humidity Specifications Temperature Humidity 20 to 40 C 4 to 1049 9096 or less Table 9 402A Transportation 9 2 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON N CHAPTER 9 MAINTENANCE AND SERVICING B Storing and Handling Unsealed Cartridges The photosensitive medium is an organic photoconductor which is extremely susceptible to light Since the cartridge also contains toner you must be extra careful when storing or handling the cartridge Make sure the user is aware of this fact and will handle the cartridge with care 1 a b Storing Unsealed Cartridges Avoid areas subjected to strong rays of the sun Do not keep it in a car even in a protective box the inside may become extremely hot Avoid areas of high or low temperature humidity and areas where these factors tend to change rapidly for example near air conditioners
27. 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION 4 Detach the tip of the seal attached to the cartridge and pull it straight out to the front about 50 cm Figure 1 404E 5 Hold the cartridge with its Warning label facing the left and insert it in the copier with care until it butts against the rear Figure 1 405E 6 Close the top cover and return the copyboard to the center Note You can replace the black toner cartridge with any color cartridge the same way COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 13 CHAPTER 1 GENERAL DESCRIPTION F Changing the Density PC420 430 FC220 You have a choice of three settings for automatic density adjustment mode AE switch the density if the copy is too dark or too light Figure 1 401F Note You can also switch the density among three settings in manual density adjustment mode G Cleaning Advise the user to clean the following if the copies are soiled 1 Copyboard Glass Copyboard Cover Wipe the part with a moist cloth then dry wipe it If dirt cannot be removed wipe the part using mild detergent then dry wipe it 1 14 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION 2 Lens Array 1 Move the copyboard to the left until
28. 3 sec I error Q131 Delivery sensor gt 41 3 3 sec gt 3 3 sec Q801 Note is identified if the pick up sensor is ON 0 2 sec after the pick up solenoid has gone OFF Figure 5 401C 5 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C HA PT ER 5 PICK UP FEEDING SYSTEM D Pick Up Stationary Jam The copy paper does not move past the pick up sensor within a specific period of time 1 PC420 430 FC220 Copy Start key ON Power switch ONA CBRV Sequence STBY INTR COPY LSTR Copyboard CBRV STOP CBFW CBRV CBFW l STOP Main motor M1 2 Copyboard posi tion sensor Q902 Li Pick up sensor Q131 Delivery sensor Q801 Jam check Figure 5 4010 A4 2 PC400 FC200 Power switch ON Copy paper inserted r Copy paper inserted LSTR brev STOP Sequence STBY INTR COPY Copyboard CBRV STOP CBFW CBRV CBFW Main motor M1 Copyboard posi tion sensor Q902 NEN LI na normal error Q131 Delivery sensor Q801 5 Jam check N
29. B Operations 1 Turning the Scanning Lamp ON and OFF Square waves of the LAPWM command corresponding to the output of the amplifi er circuit are generated to the lamp driver circuit Q143 ON Current flows into the filament of the lamp causing the fluorescent lamp to go ON at high frequency 2 Controlling the Intensity of the Scanning Lamp If the intensity of the lamp is low when the lamp goes ON Initial power of the intensity sensor PD601 is low Output voltage of the amplifier circuit is high Duty ratio H of the output of the microprocessor LAPWM com mand grows high Current flowing to the lamp increases If the intensity of the lamp is high when the lamp goes ON Initial power of the intensity sensor PD601 is high Output voltage of the amplifier circuit is low Duty ratio H of the output of the microprocessor LAPWM com mand grows low Current flowing to the lamp decreases If the microprocessor finds out that the scanning lamp has remained on for 2 min at such times as not prescribed it activates the self diagnostic mechanism the results are indicated by E6 for the PC420 430 FC220 and JAM for the PC400 FC200 C Controlling the Intensity of the Scanning Lamp VR604 You must adjust the intensity of the lamp if you have replaced the scanning lamp unit intensity sensor or control panel PCB see p 10 6 Note You must adjust the AE mechanism after adjusting the intensity PC420 430 F
30. C GENERAL CIRCUIT DIAGRAM A 5 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON A GENERAL TIMING CHART PC400 FC200 General Timing Chart A4 2 copies 1 Power switch Copy paper inserted ON E Copy paper inserted Sequence STBY INTR COPY LSTR STBY Copyboard CBRV STOP CBFW CBRV CBFW CBRV STOP 1 Main motor M1 Document position sensor Q902 m HN 3 Copyboard drive solenoid SL2 29 4 Scanning lamp LA1 LA8 5 Fixing heater H1 6 Primary AC bias O __________ _ ________ _____ 7 Primary DC bias 240V 625V p 8 Developing AC bias ___ 6_9__ _ A 4 4 10 Transfer s 11 Pick up sensor 0131 9 Developing DC bias 400V 130 to 550V 12 Registration solenoid SL1 13 Delivery sensor Q801 Cleaning mode Measurement mode COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON A 1 PC420 430 FC220 General Timing Chart A4 2 copies 1 sec Power switch Copy paper inserted Se
31. COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON vi Check Pins by 10 38 1 Controller DC Power Supply PCB 10 38 2 Control Panel PCB 10 39 VII SELF DIAGNOSIS 10 40 C GENERAL CIRCUIT DIAGRAM A 5 D SPECIAL TOOLS TABLE A 7 E SOLVENTS OILS TABLE A 8 viii COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION This chapter outlines the machine s specifications and how it may be operated ly FEATURES Cho Peas 1 1 D Add Paper Indicator 1 11 SPECIFICATIONS 1 2 E Replacing the Cartridge 1 11 Ill NAMES OF PARTS 1 4 Changing the Density 1 14 A External View 1 4 G 1 1 14 B Cross Section 1 5 When Not Using the Copier for a IV OPERATION eiiiai eiaa 1 6 1 16 A Control Panel 1 6 V IMAGE FORMATION 1 17 B Making Copies 1 8 erobern 1 17 Jam 1 11 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAP
32. Cartridge When the cartridge is running out of toner copies tend to show white lines or vertical white spots Figure 1 401E Preface Thank you for ure anon copier copier its functonc hod of use It to ensure safe pes read this m in order to fam iar sith its capabili functions Ait yo ng this manua EE CAUTIO In this 7 AGES with this procedure ac It in personal in Figure 1 401E COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 11 CHAPTER 1 GENERAL DESCRIPTION 1 If white lines or spots appear on copies replace the cartridge as follows Remove the cartridge from the copier and rotate it several times as shown in Figure 1 402 Figure 1 402 Set the cartridge back in copier and make copy If the output returns to normal The cartridge may be used further advise the user however to obtain a spare cartridge If the output fails to return to normal Replace the cartridge as described below Replacing the Cartridge Move the copyboard to the left until it stops then press the open close button to open the top cover Slide the cartridge out of the copier Hold the cartridge with the Warning label facing up and rotate it about 90 degrees in both directions Figure 1 403E 1 12 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN
33. Copyboard drive solenoid 512 4 Fixing heater H1 5 Pick up solenoid SL1 Pick up sensor 0131 b PC400 FC200 Power switch Copy paper inserted ZZA ON only PC430 Figure 5 301B Copy paper inserted SPAY Sequence STBY INTR COPY LSTR STBY Copyboard Main motor M1 a CBRV STOP CBFW CBRV CBFW L STOP Copyboard position sensor Q902 Copyboard drive solenoid SL2 Fixing heater H1 Registration solenoid SL 1 Pick up sensor Q131 Pick up sensor 0131 detects copy paper Figure 5 302B COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON ENS CHAPTER 5 PICK UP FEEDING SYSTEM IV CHECKING FOR JAMS The copier has a pick up sensor Q131 and a delivery sensor Q801 to check if the paper is moving properly inside it Jams are identified by the presence of paper in the pick up or delivery assembly at such times as preprogrammed in the microprocessor When the microprocessor identifies a jam it immediately causes the main motor to go OFF and indicates the presence of a jam The microprocessor identifies the following conditions as jams A Delivery Delay Jam The copy paper does not reac
34. D and detach the registration roller assembly 2 while lifting its front slightly and as if to move it to the front Note When installing the registration roller assembly to the copier be sure that the sheet shown in Figure 5 502B is between the upper and lower registration rollers er wv eM Sheet Registration roller lower Figure 5 502B 5 14 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 5 PICK UP FEEDING SYSTEM C Removing the Separation Pad 1 Remove the pick up roller assembly 2 Open up the feeding guide 2 and remove the separation guide 3 Figure 5 502C COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 5 15 CHAPTER 5 PICK UP FEEDING SYSTEM 5 16 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM This chapter outlines the machine s fixing system in relation to mechanisms and functions relationship between electrical and mechanical systems and the timing of operation of respective parts OUTLINE OF OPERATIONS 6 1 C Controlling the Supply Power to As OUI 6 1 the Fixing Heater 6 3 B Controlling the Fixing Heater D Prote
35. Figure 1 301B COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 5 CHAPTER 1 GENERAL DESCRIPTION IV OPERATION A 1 Control Panel PC420 430 FC220 Error indications Check jam Supply paper Jam _ Check error EE and j Check error 3 t Check error NO ON OFF 4darker o 9651 d iter A lighter darker 8 49 Figure 1 401A Density Control Dial AE key Press it to select deselect AE automatic exposure mode AE Indicator A goes ON when AE mode is selected e A goes OFF when AE mode is deselected Jam Indicator Flashes when paper jams inside the copier Copy Count Indicator Displays the number of copies entered by pressing the Copy Count Set key The count decreases for each copy made the initial number is displayed after the last copy has been made is displayed to indicate pick up failure or absence of paper is displayed in response to an error found by self diagnosis Copy Count Set Key Each press on the key increases the copy count up to 9 A press while 4 is displayed causes to appear indicating all sheets on the pick up tray will be used for continuous copying 7 Clear Stop Key During continuous copying the key serves as a Copy Stop key the operation stops af
36. Hold the trailing edge of the copy paper and set the sheet and film on the pick up tray 3 While holding the trailing edge of the copy paper press the Copy Start key Remove the paper when the film begins to move into the copier the paper will no longer serve its purpose Figure 1 404B Note Take away each OHP film delivered to the copy tray COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 9 CHAPTER 1 GENERAL DESCRIPTION Manual Feeding PC400 FC200 Set a document on the copyboard Adjust the Density Control lever to suit the document Slide the pick up guide to suit the size of copy paper Insert copy paper along the pick up guide The copier starts copying operation automatically as soon as it detects paper To continue copying insert the next paper when the copyboard starts to return STI Making Two Sided Copies 1 Turn over the copy while maintaining its feeding direction Make sure that the paper is not moist or curled e Use paper of 64 to 128 g m when making two sided copies Do not process each side more than twice Figure 1 405B Making Overlay Copies You can make two or three colored copies by replacing the cartridge e Use paper of 64 to 128 g m when making overlay copies Do not process each side more than three times 1 10 COPY
37. Il Controlling the Scanning Lamp A Outline Figure 3 201A shows the circuit that controls the scanning lamp fuse lamp and the circuit has the following functions Turns the scanning lamp ON and OFF Controls the intensity of the scanning lamp An intensity sensor PD601 is provided to ensure that the original will be illuminated after the intensity of the scanning lamp has stabilized The intensity of the scanning lamp is checked by the lamp intensity detection signal LID to make sure that the intensity has reached the specified value In addition a rush current protection circuit is provided to prevent rush current occurring when the lamp turns on Scanning lamp LA1 LA8 498 1 4 24VU J621 4 0143 Y B N Lamp L intensity sensor ie 3 0601 3108 2 Rush current _ 1 protection circuit Lamp ON signal LAPWM VR604 5 Tg J601 9202 8 1 10 43 Lamp intensity sensor signal LID v 5 i 5 5V A Amplifier circuit i Control panel PCB DC controller DC power supply PCB _ The number within parentheses represents the PC400 FC200 Flgure 3 201A COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 3 7 EE CHAPTER 3 EXPOSURE SYSTEM
38. Is the problem corrected Push the lens into place while taking great care not to scratch it End Replace the cartridge COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 21 The copy is blank Cause Checks YES NO Remedies Cartridge Is the cartridge set in the copier NO Set the cartridge in the copier Does the cartridge have toner NO Replace the cartridge Has the seal been removed from the cartridge NO Remove the seal Set the cartridge in the copier and close the copier Does the drum cover shutter open without fail NO Make adjustments so that the shutter opens smoothly Drum drive assembly Is the drum drive gear rotating normally Check the drum drive assembly High voltage transformer Terminals for primary charging Cartridge Are the primary charging terminal at the front left of the cartridge and the high voltage terminal at the bottom of the copier in firm contact 22 The copy is solid black Checks Check the high voltage transformer DC controller DC power supply PCB YES NO 1 Check the contact for electrical continuity 2 Try replacing the cartridge Remedies COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON
39. Pick up sensor lever Is the movement of the pick up sensor lever smooth Adjust the movement of the pick up sensor lever Spring pick up guide plate PC420 430 FC220 Check the movement of the pick up guide plate found under the pick up roller 15 its movement smooth Check the position of the spring of the pick up guide plate Pick up roller Spring for pick up control Spring clutch PC420 430 FC220 Is the pick up roller deformed or worn 2 Separation Feeding Assembly Cause Checks Replace the pick up roller YES NO 1 Check the spring 2 Check the spring clutch Remedies Copy paper Try paper of a type recom mended by Canon 15 the problem corrected YES Advise the user to use recommended paper Is the copy paper curled or wavy or otherwise deformed Replace the copy paper advise the user on the correct method of storage Feeding assembly Static eliminator Is foreign matter found in the feeding assembly Is the static eliminator soiled with toner Remove the foreign matter Clean the static eliminator Registration roller Spring for registration control Spring clutch registration assembly COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Is the registration roller worn deformed or soiled If dirt is found clean it using alcohol
40. T106 it causes the relay to go OFF thus cutting the power output If this hap pens remove the cause and switch the copier ON to reset 7 2 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS IIL MECHANICAL SYSTEM Here the copier is discussed in terms of its mechanical characteristics and opera tion and how to disassemble and assemble it Be sure to observe the following for disassembly assembly work 1 Disconnect the power cord for safety before disassembly or reassembly Work 2 Unless otherwise noted reassembly is the reverse of disassembly 3 Group the screws by type length and diameter and location 4 One of the mounting screws used on the rear cover is provided with a washer to protect against static electricity Be sure to keep the washer with the screw when mounting the cover 5 The fixing screw for the grounding wire and varistors is fitted with a washer to ensure electric continuity be sure to use the washer for reassembly 6 If possible avoid operating the machine with any of its parts removed COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 7 3 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS A External Covers Detach the covers as follows to clean inspect or repair the inside of the machine 74 Detaching the Control Pane
41. The copy is too light dark areas as well 10 17 The copy is too light extremely light overall 10 17 The copy has uneven density darker at front 10 18 The copy has uneven density lighter at front 10 18 The copy is foggy overall 1 The copy is foggy paper feed direction 10 19 The copy has dark lines paper feed direction relatively narrow 10 19 The copy has dark lines paper feed direction thin E HE 10 19 The copy has white spots paper feed direction 10 19 The copy has white lines paper feed direction 10 19 The copy has white spots 14 15 20 21 22 cross feed direction 10 20 The back of the copy is soiled 10 20 The copy has faulty fixing 10 21 The copy has faulty leading edge registration blank area much too wide 10 21 The copy has faulty leading edge registration blank area too wide 10 21 The copy has faulty leading edge registration no blank e P 10 21 The copy has a blurred image MR URS 10 22 The copy is foggy cross feed 10 22 The copy has poor sharpness TOOLS coner rere 10 22 The copy is blank 10 23 The copy is solid black 10 23 IV TROUBLESHOOTING MALFUNCTIONS 10 24 A Troubl
42. _ Oscillation DC bias control circuit control circuit Oscillation circuit A S P i E 50 5 8 2 z 25 OL gt o0 i SO lt mc E i RS DC controller DC power supply PCB Figure 4 101C COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 5 CHPTER 4 IMAGE FORMATION SYSTEM D Controlling Developing Bias 1 Outline Both AC bias and DC bias are applied to the developing cylinder during copying operation When the photosensitive drum is rotating except during development about 400 V is applied to the developing cylinder regardless of the settings made by the density con trol dial lever thereby preventing adhesion of excess toner on the surface of the photo sensitive drum The copier controls the copy density by varying the voltage of the DC component of the developing bias 120 to 560 V based on the following Setting made by the density control dial lever manual density control Output of the AE sensor automatic density control PC420 430 FC220 Setting made by the density correction switch SW606 PC420 430 FC220 The density correction switch SW606 on the control panel PCB allows three set tings by the user Advise the user to change the setting if the copies tend to be foggy because of shifts in the
43. cartridge is installed in the copier pull it out to the front 8 2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Work CHAPTER 8 INSTALLATION Description Hold the cartridge with its Warning label facing up and rotate it in both directions about 90 Place the cartridge on a level place then detach the tip of the seal and pull it fully out about 50 cm Hold the cartridge with its Warning label facing left and slide in the cartridge slowly until it stops Close the top cover and return it to the center COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 8 3 CHAPTERS INSTALLATION Connect the power cord to the power Press the Clear Stop and other keys to make sure outlet and the copier and switch the that the copy count is correctly indicated copier ON PC420 430 FC220 Check that 1 goes ON on the display PC420 430 FC220 Check that 1 goes ON on the display PC420 430 FC220 Check the Main indicator goes ON PC400 FC200 Check the movement of the copy density lever dial Set the Test Sheet on the copyboard Make sure no abnormal noise is heard and make copies make sure that Make sure that copies are made in the specified copies are made properly number properly PC420 430 FC220 Check t
44. copier OFF while the copy paper is moving through the feeding assembly Is the paper wrinkled at the time Or is it moving askew YES Check the pick up assem bly Check the registration roller Copy paper Try paper fresh out of package Is the problem corrected The paper may be moist advise the user on the correct method of storage Also advise the user to remove curling before feeding paper for a second time when making two sided overlay copies Try copy paper of a type recommended by Canon Advise the user to use recommended paper Inlet guide Fixing assembly Fixing assembly COPYRIGHT 1998 CANON INC Is the inlet guide soiled with foreign matter or toner Clean it using solvent CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Check the fixing assembly 10 33 ENS CHAPTER 10 TROUBLESHOOTING VI ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS A Sensors and Solenoids Figure 10 601A Name Notation Description Photointerrupter Q131 Pick up assembly paper sensor Q801 Delivery assembly paper sensor Q901 Motor rotation sensor Q902 Copyboard position sensor Photodiode PD601 Intensity sensor PD602 AE sensor Solenoid SL1 Pick up registration solenoid SL2 Copyboard drive solenoid 10 34 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 19
45. if worn or deformed replace it 1 Check the spring 2 Check the spring clutch in the registration assembly 10 31 CHAPTER 10 TROUBLESHOOTING 3 Fixing Delivery Assembly Cause Checks YES NO Remedies Separation Feeding assembly Are the copy image and the document matched correctly NO Check the separation feeding assembly Fixing assembly inlet guide Is the inlet guide soiled with foreign matter or toner Clean it Delivery sensor lever Delivery roller assembly Delivery sensor PCB Does the delivery sensor lever move smoothly Is the delivery sensor Q801 PCB normal Correct it so that the lever moves smoothly Check the delivery roller assembly Replace the delivery sensor PCB 10 32 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING B Feeding Faults 1 Double Feeding Copy paper Checks Try copy paper of a type recommended by Canon Advise the user to use recommended paper Separation pad Spring pick up guide plate PC420 430 FC220 2 Wrinkles Cause Check the movement of the pick up guide plate Is the movement smooth Checks Check the condition of the separation pad YES NO Check the position of spring Remedies Pick up assembly Registration roller Switch the
46. image width is determined by the position of the white paint found behind the copyboard glass Size index Copyboard glass 2mm White paint Figure 10 202A 2 Image Leading Edge Margin point of detection for registration The leading edge margin must be 0 2 to 5 0 mm when the Test Sheet is copied To adjust move the position of the registration cam 0 2 to 5 0 mm Figure 10 203A COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 5 CHAPTER 10 TROUBLESHOOTING B Electrical Notes If you have replaced the scanning lamp unit intensity sensor AE sensor or control panel PCB you must adjust the three variable resistors on the control panel PCB one if PC400 FC200 you must however adjust them in the order of VR604 VR602 and VR603 from intensity to AE Adjusting the Intensity VR604 After Replacing the Control Panel PCB Only Disconnect the power plug and detach the faulty control panel PCB Set the meter to the 200 k range and measure C between the terminal of VR604 and the terminal of R614 on the detached control panel PCB see Figure 10 201B Likewise measure C between the terminal of VR604 and the terminal of R614 on the new control PCB then turn VR604 so that the reading is the same as the measurement taken in step 2 In the case of the PC420 430 FC220 adjust VR602 A between termi
47. is started while the copyboard is moving forward i e when the leading edge of the document begins to be exposed copyboard position sensor Q902 goes OFF At the time the photodiode PD602 checks the reflected light The output of the photodiode PD602 is amplified and sent to the microprocessor as AE signals AE Measurement Timing Chart Power switch ON Copy Start key ON Sequence STBY INTR COPY Copyboard CBRV STOP CBFW Main motor M1 Copyboard position 2 sensor Q902 measurement Developing DC bias Figure 4 101F 4 14 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C 4 IMAGE FORMATION SYSTEM The microprocessor takes measurements of the AE signals four times every 1 5 mm and generates the developing DC bias control command DCBPWM to suit the average document density See Figure 4 102F for the points at which the document density is measured in relation to the copyboard glass 6 mm 30 approx 4 52 33 5 approx Points of measurement Figure 4 102F 3 Adjusting the AE Mechanism VR602 VR603 You must adjust the AE mechanism if you have replaced the scanning lamp unit control panel PCB or intensity AE sensor see p 10 8 Note Adjust the AE mechanism only after adjusting the
48. it wrapped Copyboard rail Is the problem noted at the same Check the copyboard rail position on all copies for foreign matter Scanning lamp Check the scanning lamp Developing bias for flickering and check the presence absence of a developing bias 13 The back of the copy is soiled Checks YES NO Remedies Press the Copy Start key and NO Go to step 3 switch the copier OFF while the copy paper is moving through the feeding assembly Is the back of the copy soiled Transfer charging Is the transfer charging assem Clean the transfer assembly bly soiled charging assembly Clean the registration roller Clean the pick up guide plate Check the cartridge for leakage of toner Feeding assembly Is the feeding assembly soiled Clean the feeding assembly Delivery roller Clean the delivery roller 10 20 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 14 The copy has faulty fixing Cause Checks YES NO Remedies Copy paper Is the copy paper of a type rec ommended by Canon NO Try paper of a recom mended type if the results are good advise the user to use recom mended paper Fixing film Is the faulty fixing vertical and in the form of lines Check the fixing film and pressure roller for scratches If scratches are found r
49. rack Forward Reverse switching mechanism gc ZR Forward Reversing gear Reverse Main motor gear Reversing cam drive solenoid SL2 Main motor Figure 3 103B Copyboard position sensor lever Down Up Copyboard drive ON forward reverse solenoid SL2 stop free Note i The direction forward reverse is switched when the copyboard drive solenoid is OFF ii The direction of the drive is maintained while the copyboard drive solenoid is ON Table 3 102B 3 4 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON N CHAPTER 3 EXPOSURE SYSTEM a Stopping the Copyboard Causing the copyboard drive solenoid SL2 to go OFF frees both forward and reverse gears so that the copyboard remains stationary At the time the copyboard may be moved to the right or left by hand b Moving the Copyboard in Reverse When SL2 goes ON while the main motor is operating the forward reverse switching mechanism engages with the reverse gear and the reverse gear rotates in the direction of the arrow causing the copyboard to move in reverse The copyboard moves in reverse about two times as fast as when it moves forward owing to the difference in the gear ratio
50. range and turn VR602 AE offset adjust ment until the voltage between the anode side of the diode 0606 and JP607 GND is 4 0 0 1 V Notes You must use a Digital Multimeter when making adjustments in steps 8 and 10 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 9 ENS CHAPTER 10 TROUBLESHOOTING VR602 VR603 JP607 9 Place about five sheets of blank copy paper 10 Turn VR603 AE gain adjustment until the voltage between the anode side of the diode D606 it and JP607 GND is 1 8 0 1 V see Figure 10 205B 11 Switch the copier OFF 6 anode side Control panel PCB Figure 10 205B Notes Make sure that the jumping wires are no longer shorted Switch the copier ON once again Set the density correction switch SW606 to the center of the three settings 14 Make sure that the AE indicator is ON Set the newspaper used in step 4 on the copyboard once again this time move the newspaper to a different area 16 Make a copy and make sure that it is not foggy and has adequate text density If foggy Turn VR602 clockwise slightly e If text density is low Turn VR602 counterclockwise slightly 17 Repeat steps 15 and 16 until the density is optimum 12 1 5 6 10 10 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON
51. sensitivity of the photosensitive drum SW606 is valid for man ual density control as well Figure 4 101D 102D shows the changes in the DC component of the developing bias caused by the density control dial lever in manual density control mode Figure 4 103D on the other hand shows changes in the DC component of the developing bias caused by different document densities in automatic density adjustment mode AE Note The copier does not change the developing bias between black toner and color toner This is because the color toner used by the copier is a single component agent which allows the use of the same developing bias as for the black toner for development Density Control Lever darker 9 5 1 lighter 0 gt 100 200 300 400 500 Y Developing bias DC component V Figure 4 101D Manual Density Control PC400 FC200 4 6 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C 4 IMAGE FORMATION SYSTEM Density Control Dial darker 9 5 1 lighter 0 444 100 2004 300 400 ME2 dark 500 ME1 Y MEO light vy setting by density correction Developing bias DC t Sis ote Component sd Figure 4 102D Manual Density Control PC420 430 FC220 Document Test Chart Newspaper density gt 100 200 15805 zu 2 dark 400 AE1 500 AEO light Y SW606
52. tet adn 10 3 A Image Adjustment Basic Procedure 10 3 B Points to Note 10 4 Il STANDARDS AND COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON ADJUSTMENTS 10 5 A Mechanical 10 5 1 Image Leading Edge Non Image Width position of white paint on back of glass 10 5 2 Leading Edge Margin lt vi point of detection for registration 10 5 B Electrical aues ette xr 10 6 1 Adjusting the Intensity VR604 10 6 2 Adjusting the AE Mechanism VR602 VR603 IMAGE TROUBLESHOOTING 10 11 A Making Initial Checks 10 11 1 Site Environment 10 11 2 Checking the Documents WR eatin PORCH 10 11 3 Checking the Copyboard oo o B Samples of Image Faults Cover and Copyboard Glass for Dirt and Scratches 10 12 Checking the Lens Array for BIA coetu thes 10 12 Checking the Transfer Charging Roller 10 12 Checking the Feeding Assembly Checking the Copy Paper M nU TP E 10 12 Checking the Durables 10 12 Others ni 10 14 10 16 C Troubleshooting by Image Fault 1 2 GOs e 10 11 12 10 17 The copy is too light halftone areas only 10 17
53. the symbol the arrow indicates the direction of the electric signal The expression turn on the power means flipping on the power switch closing the front door and closing the delivery unit door which results in supplying the machine with power 2 n the digital circuits 1 is used to indicate that the voltage level of a given signal is High while 0 is used to indicate Low The voltage value however differs from circuit to circuit In practically all cases the internal mechanisms of a microprocessor cannot be checked in the field Therefore the operations of the microprocessors used in the machines are not discussed they are explained in terms of from sensors to the input of the DC controller PCB and from the output of the DC controller PCB to the loads Note The descriptions in this Service Manual are subject to change without notice for product improvement or other purposes and major changes will be communicated in the form of Service Information bulletins All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be able to identify and isolate faults in the machine COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CONTENTS CHAPTER 1 GENERAL DESCRIPTION FEATURES 1 1 1 Time to Replace the Cartridge I SPECIFICATIONS
54. use the washer for reassembly 6 If possible avoid operating the machine with any of its parts removed 4 18 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C 4 IMAGE FORMATION SYSTEM A Photosensitive Drum 1 Cleaning the Drum Caution As a rule do not touch or clean the photosensitive drum 1 Open the top cover and take out the cartridge 2 Putthe cartridge upside down and open the drum shutter 3 Clean the surface of the drum using a flannel cloth coated with toner Caution 1 You must rotate the drum in the direction it rotates for making copies otherwise the leaf spring used to apply developing biases to the developing cylinder may cause faulty contact 2 Use a flannel cloth do not use paper lint free or otherwise 3 Work quickly to protect the drum from light The drum would recover to more or less its normal condition if left alone for five minutes in a dark place after exposure to an intensity of 1500 lux about 5 minutes under general lighting However you must try to avoid any exposure at all cost The rays of the sun have intensities ranging between about 10000 and 30000 lux COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 19 CHPTER 4 IMAGE FORMATION SYSTEM B Transfer Charging Roller 1 Cleaning the Transfer Charging Roller 1 O
55. 0 COPYRIGHT 1998 CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING Se Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 3uide to the Troubleshooting Table mmm You will find troubleshooting steps organized in tables which are modified versions of general flow charts Study the following for an idea of how to consult them EX AC power is absent Cause Checks YES NO Action Power plug Is the power plug connected to NO Connect the power the power outlet plug Covers Are the front door and the Close the door and delivery cover closed firmly the cover Power Supply Is the specified voltage present The problem is not at the power outlet of the machine Advise the user Is the specified voltage present Go to step 6 between J1 1 and J1 2 J1 is found near the power cord f you want to find out the cause possible faulty part see the column under Cause In the case of AC power is absent the power plug may be disconnected the covers may not be closed firmly or the main power supply is absent f you want to find out the action to take or the steps to correct a specific problem go through the steps in order Answer YES or NO to the questions under Checks and take the action indicated accordingly COPYRIGHT 1998 CANON INC CA
56. 0 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 6 5 CHAPTER 6 FIXING SYSTEM MECHANICAL SYSTEM Here the copier is discussed in terms of its mechanical characteristics and opera tion and how to disassemble and assemble it Be sure to observe the following for disassembly assembly work Disconnect the power cord for safety before disassembly or reassembly work Unless otherwise noted reassembly is the reverse of disassembly Group the screws by type length and diameter and location One of the mounting screws used on the rear cover is provided with a washer to protect against static electricity Be sure to keep the washer with the screw when mounting the cover The fixing screw for the grounding wire and varistors is fitted with a washer to ensure electric continuity be sure to use the washer for reassembly If possible avoid operating the machine with any of its parts removed COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM A Fixing Assembly 1 Construction D Note 1 The fixing film is made of special material do not touch it or leave dust on it 2 The pressure exerted by the lower roller is controlled by the pressure spring built into the bushing 3 The copier does not have an adjustment mechanism for roller pressure Q9 F
57. 0 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING C Troubleshooting by Image Fault 1 The copy is too light halftone areas only 2 The copy is too light dark areas as well 3 The copy is too light extremely light overall Lens Reflecting plate Intensity sensor Clean the lens reflecting plate and intensity sensor Is the problem corrected Press the Copy Start key and switch the copier OFF in the middle of operation then open the top cover Is the toner image on the pho tosensitive drum more or less normal before transfer Be sure to check quickly to protect the drum against light Go to step 5 Transfer charging roller Copy paper Transfer Is the transfer charging roller normal Try paper fresh out of package Is the copy density higher Re attach the charging roller Replace the charging roller The paper may be moist advise the user on the correct method of storage Advise the user that the use of non recom mended paper may not bring about the best results Cartridge DC controller DC power supply PCB COPYRIGHT 1998 CANON INC Replace the cartridge Is the problem corrected CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON End Replace the DC controller DC power supply PCB 10 17 CHAPTER 10 TROUBLESHOOTING 4 The copy has unev
58. 101 J102 BK Delivery door switch J201 da d RE 2 1 SL1 Pick up solenoid Mai Copyboard ain motor position detection Copyboard drive solenoid DC controller DC power supply PCB Motor rotation detection COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON APPENDIX D SPECIAL TOOLS TABLE What follows below is a table of special tools used for servicing the machine in addition to the standard tools set Tool name Tool Number Category Remarks Digital CK 0552 For adjusting the AE multimeter mechanism The tools are categorized as follows A tools that must be carried by each service person B tools that must be carried by a group of about five service persons C tools that must be kept by each workshop COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON A 7 APPENDIX E SOLVENTS OILS TABLE No Name Uses Composition Remarks 1 Alcohol Cleaning Hydrocarbon fluorine family Do not bring near fire e g glass plastic Alcohol Procure locally rubber parts Surface active agent Isopropyl alcohol may be external covers substituted 2 Solvent Cleaning Hydrocarbon D
59. 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 7 7 EE CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 5 Detaching the Bottom Cover 1 Place the copier with the delivery assembly at the bottom then remove the two screws M4X10 black D 2 Disengage the five hooks 2 and detach the bottom cover 3 Figure 7 211A 7 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS B Copyboard Assembly Detaching the Copyboard Cover 1 Lift the right rear corner of the copyboard cover about 5 mm then slide it to the front Figure 7 201B v 2 Slide the left rear corner the same way Figure 7 202B 2 Detaching the Copyboard 1 Move copyboard to the left until it stops and remove the screws 2 M3X6 white 3 M4X10 black Figure 7 203B COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 7 9 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 2 Move the copyboard to the right by hand and remove the screw M4X10 black 0 then detach the copyboard 5 Figure 7 204B Note 1 Do not disassemble the rail 2 To attach the copyboard fit t
60. 98 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 7 Pick up fails Checks YES NO Remedies Move the copyboard to the left until it stops and open the top cover Does the pick up roller rotate when the door switch is turned ON and the Copy Start key is pressed at the correct pick up timing YES See Pick Up Assembly in Troubleshooting Feeding Faults Main motor M1 Is the main motor rotating See The main motor fails to rotate Pick up sensor Q131 Does the copier operate nor mally when the pick up sensor Q131 is blocked with paper Check the sensor lever Pick up solenoid SL1 PC420 430 FC220 Registration solenoid SL1 PC400 FC200 DC controller DC power supply PCB Set the meter to the 30VDC range Does the voltage between J201 6 and J201 7 on the DC controller DC power supply PCB change to about 24 V at pick up timing 8 The scanning lamp fails to go ON Cause Checks Check the spring clutch in the registration assembly and pick up assembly if normal replace the solenoid YES NO Check the wiring from the solenoid to the DC con troller DC power supply PCB if normal replace the DC controller DC power supply PCB Remedies Scanning lamp LA1 LA8 Is the scanning lamp unit attached correctly NO Re attach the lamp uni
61. 98 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING B Switches SW1 SW604 SW606 SW2 d NP Figure 10 601B Notation Description Switch Swi Top cover switch SW2 Delivery assembly door switch SW604 Power switch SW606 Density 3 setting switch COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 35 CHAPTER 10 TROUBLESHOOTING C Lamp Heater Motor and Others M1 Figure 10 601C Notation Description Heater H1 Fixing heater Motor M1 Main motor Thermistor Fixing heater temperature detection Thermal fuse Fixing heater overheating detection 10 36 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING D Printed Circuit Board PCB lt gt amp Figure 10 601D D Description DC controller DC power supply PCB Controls sequence supplies DC power controls scanning lamp ON Control panel PCB Controls displays copying operation Scanning lamp PCB Scanning lamp LA1 LA8 Delivery sensor PCB Detects delivery Motor rotation sensor PCB Detects main motor rotation Copyboard position sensor PCB Detects copyboard position D COPYRIGHT 1998 CANON I
62. C KEYRO KEYR1 LAPWM LID MMCLK MMD PWOFF PWSON PUSD RELAYED RGSD TH1 TREV VPEAK ZXDP AC BIAS TIMING PULSE COMMAND AE SIGNAL COPYBOARD DRIVE SOLENOID DRIVE COMMAND DC BIAS CONTROL COMMAND TRANSFER DC BIAS CONTROL COMMAND OSCILLATION SIGNAL 0 OSCILLATION SIGNAL 1 OSCILLATION SIGNAL 2 FIXING HEATER DRIVE COMMAND PRIMARY AC BIAS ON COMMAND PRIMARY DC BIAS ON COMMAND PRIMARY DC BIAS HIGH OUTPUT COMMAND TRANSFER DC BIAS ON COMMAND RETURN SIGNAL 0 RETURN SIGNAL 1 LAMP DRIVE COMMAND LAMP INTENSITY DETECTION SIGNAL MAIN MOTOR CLOCK PULSE SIGNAL MAIN MOTOR DRIVE COMMAND POWER OFF COMMAND POWER SWITCH ON SIGNAL PICK UP ROLLER SOLENOID DRIVE COMMAND RELAY DRIVE COMMAND REGISTRATION SOLENOID DRIVE COMMAND THERMISTOR SIGNAL 1 TRANSFER REVERSE DC BIAS ON COMMAND VOLTAGE PEAK DETECT SIGNAL ZERO CROSS DETECTION SIGNAL COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON A 3 EN APPENDIX 2 Abbreviations INTR LSTR CBFW CBRV STBY 4 INITIAL ROTATION LAST ROTATION COPYBOARD FORWARD COPYBOARD REVERSE STANDBY COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Scannig lamp PCB SW1 J108 JP350 J101 J102 Jue RETURN W 100V Door switch Delivery door switch Black Blue Brown Gray Green Orange Pink Red Copyboard Sky Blue position
63. C200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 IMAGE FORMATION SYSTEM Photo sensitive drum i Transformer Transformer T107 Oscillation circuit ke KI Positive T106 bias control 9 circuit al Transfer positive DC bias ON command TREV Voltage sensor analog signal Transfer DC bias ON command HVTDC 24V Voltage 77 control circuit Jis TIT Multiplier Rectifier circuit Current Constant current control circuit Sensor circuit Pulse DC Current K converter limiter circuit circuit Transfer DC bias control command DCTPWM Microprocessor DC controller DC power supply PCB Figure 4 101E COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Transfer charging roller 4 13 CHPTER 4 IMAGE FORMATION SYSTEM F Document Density Measurement AE PC420 430 FC220 1 Outline The copier is equipped with an automatic density control AE mechanism that controls the DC component of the developing bias The copier s AE mechanism does not execute an AE scan but instead measures the document density during image exposure 2 Operations Document measurement
64. C200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 3 CHPTER 4 IMAGE FORMATION SYSTEM 2 Operations a HVPDC 1 HVPHO 1 copying DC bias control circuit set to 625 V EET T106 generates DC bias HVPAC 1 Oscillation control circuit goes ON T T103 generates AC bias Primary charging gt DC bias AC bias goes ON b HVPDC 1 HVPHO 0 document not exposed bias control circuit set to 240 V bs B lads T106 generates DC bias HVPAC 1 Oscillation control circuit goes ON T T103 generates AC bias Primary charging DC bias AC bias goes c HVPDC 0 HVPHO 0 standby DC bias control circuit goes OFF T106 DC bias goes OFF HVPAC 0 Oscillation control circuit goes OFF Pt T103 goes OFF Primary charging DC bias AC bias goes OFF 4 4 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 IMAGE FORMATION SYSTEM Microprocessor ka x 5 6 Primary 09 T charging roller Transformer c Transformer 11 06 T103 Photo D 2t i sensitive drum i 3 c TIT D Amplifier o 1 Oo a Y S
65. C220 3 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 3 EXPOSURE SYSTEM Ill MECHANICAL SYSTEM Here the copier is discussed in terms of its mechanical characteristics and operation and how to disassemble and assemble it Be sure to observe the following for disassembly assembly work 1 Disconnect the power cord for safety before disassembly or reassembly work 2 Unless otherwise noted reassembly is the reverse of disassembly 3 Group the screws by type length and diameter and location 4 One of the mounting screws used on the rear cover is provided with a washer to protect against static electricity Be sure to keep the washer with the screw when mounting the cover 5 The fixing screw for the grounding wire and varistors is fitted with a washer to ensure electric continuity be sure to use the washer for reassembly 6 If possible avoid operating the machine with any of its parts removed COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 3 9 INN CHAPTER 3 EXPOSURE SYSTEM A Scanning System am 5 1 Detaching the Scanning Lamp Unit f 4 1 Detach the top cover assembly i T 2 Disengage the two hooks 1 and pins p 2 and detach the lamp unit 3
66. CHPTER 4 IMAGE FORMATION SYSTEM The copier s image formation system has the following functions Controls the scanning lamp Controls the primary charging Controls the transfer charging Controls the developing bias Lamp intensity sensor Scanning lamp Primary charging roller J621 4y 2 Control panel PCB J601 10 9 E a Lu NE S8 5 Ed o6 J202 13 5 19 AE sensor Lamp ON command LAPWM Primary corona high voltage Static eliminator Transfer charging high voltage Lens Developing cylinder 27 Pd Nn d Photosensitive drum Transfer charging roller o Es D amp gt a DC controller DC power supply PCB Note The AE sensor is provided for the PC420 430 FC220 only Figure 4 101A COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 1 4 IMAGE FORMATION SYSTEM B Sequence of Image Formation Operations A4 2 copies Power switch ON STBY Sequence Copyboard 1 Main motor M1 2 Scanning lamp LA1 LA8 3 Primary AC bias 4 Primary DC bias 4 sec 5 Transfer charging Developing AC bias Developing DC bias Scanning lamp Primary DC bias Developing DC bias 4 2 CBRV
67. ES NO Remedies Copyboard rail Is the movement of the copy board rail smooth NO Replace the copyboard rail Copyboard drive assembly Is the movement of the copy board normal NO Check the copyboard drive assembly if a fault is found replace the part Main motor assembly Feeding assembly Cartridge Is the main motor assembly normal Does the copy paper stop or jump near the transfer assem bly 19 The copy is foggy cross feed direction Cause Checks Replace the main motor assembly Remove the foreign matter or burrs from the feeding system YES NO Replace the cartridge Remedies Scanning lamp Does the scanning lamp flicker YES Replace the scanning lamp unit Cartridge High voltage transformer Replace the cartridge 15 the problem corrected 20 The copy has poor sharpness focus Checks YES End NO YES NO Check the high voltage transformer DC controller DC power supply PCB Remedies Does the copy have an image which is too light at the same time YES Correct the light image first Document Is there a gap between the document and the copyboard glass Check the copyboard glass to make sure it is not warped Advise the user how to place documents cor rectly 10 22 Is the lens off contact Clean the scanning lamp reflecting plate and lens
68. INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 7 1 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS B Power Supply PCB The copier s power supply is a composite power supply in which one main trans former T106 supplies DC power as well as power for high voltage and scanning lamp AC power is supplied to the DC power supply when the power switch and door switch are turned ON The DC power supply generates 24 V and 5 V For auto power off the microprocessor causes the relay RL101 to go OFF thus cutting power supply The copier is equipped with a sub power supply which provides the microprocessor with 5VDCL power for about 5 minutes after a condition associated EO occurs during this period the copier is prevented from going ON to prevent damage by overheating the fixing heater Note The tolerances for the DC power supply are as follows 24VH 5 e 24 VU 22 V to 46 V 45 VL 296 e 5 10 C Protection Mechanism for Power Supply Circuit The DC power supply circuit s AC power supply input is equipped with a fuse The fuse blows if an overcurrent flows because of a short circuit in the 24V power thus shut ting out the output from the AC power supply circuit If this happens disconnect the copier s power cord correct the cause of the problem and replace the fuse If the microprocessor detects an error on the AC 24VDC line of the main trans former
69. N IMPRIME AU JAPON 9 5 CHAPTER 9 MAINTENANCE AND SERVICING 9 6 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING This chapter provides tables of maintenance inspection standards adjustments and identification of problems image fault malfunction I MAINTENANCE AND INSPECTION 10 3 A Image Adjustment Basic Procedure 10 3 B Points to 10 4 Ill STANDARDS AND ADJUSTMENTS rns 10 5 A Mechanical 10 5 Electtical dnas 10 6 1 IMAGE TROUBLESHOOTING 10 11 A Making Initial Checks 10 11 B Samples of Image Faults 10 16 C Troubleshooting by Image Fault 10 17 IV TROUBLESHOOTING MALFUNGTIONS iiir rona 10 24 A Troubleshooting Malfunctions CT 10 24 V TROUBLESHOOTING PAPER FEED PROBLEMS 10 30 A Copy Paper Jams 10 30 B Feeding Faults 10 33 VI FUNCTIONS AND ARRANGEMENT OF ELECTRICAL PARTS 10 34 A Sensors and Solenoids 10 34 SwWIICIBS 10 35 C Lamp Heater Motor and Others ovs Gua 10 36 D Printed Circuit Board PCB 10 37 E Variable Resistors VR and Check Pins by PCB 10 38 VII SELF DIAGNOSIS 2 522 10 4
70. NC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 37 CHAPTER 10 TROUBLESHOOTING E Variable Resistors VR and Check Pins by PCB Of the variable resistors VR and check pins used in the copier those used in the field are discussed herein Do not touch those VRs and check pins not discussed herein they are for factory use only and require special tools and high precision for adjustment Note 1 VRs that may be used the 2 VRs that must not be usedindheeldu 2 1 DC Controller DC Power Supply ve TTE J102 S OJ103 102 S 04104 a dus VR103 ges 8 8 J6 N gt J VR101 8 8J7 mM Note The pin No in parentheses refers to the PC400 FC200 Figure 10 601E 10 38 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 2 Control Panel PCB a PC420 430 FC220 VR602 VR603 VR604 ag J601 22 2 J603 J621 Figure 10 602 b PC400 FC200 VR604 2 J611 J601 7 1 3 17 1 Y 18 2 ce 7 M Figure 10 603E Description Use it to adjust the AE of
71. NON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 1 CHAPTER 10 TROUBLESHOOTING Steps Checks YES NO Action Is the power 1 plug connected to the NO Connect the power power outlet plug Are the front 2 door and the delivery NO Close the door or the cover closed firmly cover Is the specified 3 voltage present at the WO a ThE problem A power outlet the copier Advise the user Omitted mM When checking the voltage using a meter you may come across such instructions as Measure the voltage between J109 1 and J109 2 on the DC controller PCB Connect the positive probe of the meter to the terminal marked and the negative probe to the terminal marked 10 2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON lt Pre Checks gt C Clean the parts 2 system and delivery assembly setting of the density correction switch at the middle NO Set the switch to the middle YES y Select non AE and set the density control dial lever to 5 5 then make two to three copies of the Test Chart NB 3 NA 2 NA 3 see Note 1 COPYRIGHT 1998 CANON INC Check the following 1 Density of gray scale No 9 see Note 2 2 Difference in density betwe
72. ON CHAPTER 1 GENERAL DESCRIPTION Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION FEATURES 1 Direct charging The charging roller directly charges paper significantly reducing ozone emission 2 Auto power off The copier shuts off automatically when left alone for about 5 minutes after the last Copy operation 3 Quick start The copier s wait time is 0 second always ready for quick copying work 4 Cartridge type The core of the copier photosensitive drum toner case charging roller developing assembly and cleaning assembly is integrated into a single cartridge The user need no more than replace the cartridge and perform simple cleaning to maintain the copier in top condition 5 Variety of copy effects In addition to black toner the user has a choice of several colors Taking advantage of overlay copying various copy effects may be obtained through mere replacement of the cartridge 6 Compact and light The copier is compact and light providing good portability It can easily substitute as a personal copier 7 Multifeeding PC420 430 FC220 A stack of copy paper may be placed on the pick up tray A press on the Copy Start key is all it takes to generate multiple copies COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAP
73. ON 1 1 CHAPTER 1 GENERAL DESCRIPTION Il SPECIFICATIONS PC400 FC200 PC420 430 FC220 Body Portable w grips Copyboard Moving Light source Tungsten lamp of fuse type Lens Lens array Photosensitive medium OPC 24 dia Copying Indirect electrostatic Charging Exposure Roller direct charging Slit moving copyboard Copy density adjustment Manual Automatic AE or Manual Development Dry Pick up Manual tray Multifeeder Separation Curvature Static eliminator Cleaning Blade Fixing Plane heater Performance 1 2 Document type Sheet Book 3 D object 2 kg 4 4 Ib max Maximum document size LTR A4 LGL Reproduction ratio 1 1 1 2 Wait time 0 sec approx at 20 C 68 F First copy 22 sec LTR Continuous copying Not available 1 to 9 copies or F Copying speed 4 copies min approx AAR LTR R or smaller 4 copies min A4R LTR R or smaller 3 copies min LGL Copy size A4 LTR LGL max postcard min Copy paper type 52 to 128 g m Tracing paper Colored paper OHP film Postcard vertical Labels Wrapping paper 63 g m Two sided copying Same edge orientation Copying on each side no more than twice Paper of 64 to 128 g m Overlay copying Multifeeder tray Paper of 64 to 128 g m Copying
74. P itch Copy Start key ON ower switc CBRV Sequence STBY INTR COPY LSTR brey Copyboard CBRV STOP CBFW CBRV CBFW STOP 1 Main motor M1 2 Copyboard posi tion sensor Q902 21 LI LI Pick up sensor Q131 Delivery sensor normal error normal Q801 5 Jam check 4 sec EE Figure 5 401B A4 2 PC400 FC200 aper inserted Co aper inserted Power switch CBRY Sequence STBY INTR COPY LSTR Copyboard CBRV STOP CBFW CBRV CBFW STOP 1 Main motor M1 2 Copyboard posi tion sensor Q902 il LI LI Pick up sensor Q131 Delivery sensor normal error normal Q801 5 Jam check rhe 4 sec 4 sec Figure 5 402B A4 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 5 7 CHAPTER 5 PICK UP FEEDING SYSTEM C Pick Up Delay Jam PC420 430 FC220 The copy paper does not reach the pick up sensor within a specific period of time Start key ON Power switch ON CBRV Sequence STBY INTR COPY LSTR brey Copyboard CBRV STOP CBFW CBRV CBFW Main motor M1 2 Copyboard posi tion sensor Q902 LI Pick up solenoid SL1 i C Pick up sensor normal
75. RIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON NENNEN CHAPTER 1 GENERAL DESCRIPTION C Jam Indicator The Jam indicator starts to flash when paper jams inside the copier Take care not to tear the paper when removing it otherwise be sure to remove all pieces of paper Move the copyboard to the left until it stops Press the open close button and open the top cover Remove the jam If the jam is in the pick up or fixing assembly hold the edge of the paper with both hands and pull it out slowly through the opening of the top cover If the is in the delivery assembly press the delivery assembly open close button to open the delivery cover then detach the paper from the delivery cover and pull it slowly in the direction of delivery Close the top cover and delivery cover then move the copyboard to the center To resume copying switch the copier ON set the desired copy count and set the copy density Add Paper Indicator PC420 430 FC220 flashes if you try to make a copy when the pick up tray has run out of paper Check the pick up tray for copy paper If no paper is on the tray place paper If a stack of paper is on the tray remove it first then place it back after putting its edges flush Press the Copy Start key goes OFF and the remaining number of copies are made Replacing the Cartridge Time to Replace the
76. RNALS AUXILIARY MECHANISMS 8 Push the hook 2 found at the right rear of the body with a screwdriver and lift the body cover 5 slightly 9 Detach the hook at the rear 6 as if to pull the body cover 7 to the front then lift the body cover slightly 10 Disengage the two hooks at the front as if to pull the body cover to the front 11 Detach the body cover 9 by lifting it Figure 7 207A 7 6 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 Detaching the Top Cover Assembly Detach the body cover Disconnect the two connectors 1 Bend the support 2 at the front to the front and remove the pin 3 from the top cover assembly Detach the top cover assembly 2 Detaching the Delivery Assembly Cover Take out the fixing assembly Shift the delivery assembly cover 1 in the direction of close and match the D cut of the hinge with the cut in the bushing then remove it from the front CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS Figure 7 208A X Y ay AN A iT D FLL E eia pm Figure 7 209A Figure 7 210A COPYRIGHT 1998 CANON INC PC400 420
77. STO Copy paper inserted PC400 FC200 Copy Start key ON INTR 1 5 sec COPY CBRV Copy paper inserted PC400 FC200 CBRV LSTR STBY STOP ON Cleaning mode 230V Transfer Measurement mode charging 625V ans er 400V 120V to 560V variable according to density control dial lever AE Figure 4 401B COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C 4 IMAGE FORMATION SYSTEM C Primary Charging Control Circuit 1 Outline Figure 4 101C shows the circuit that controls the primary charging and the circuit has the following functions Turns the DC bias ON and OFF Turns the AC bias ON and OFF Controls the DC bias voltage constant Controls the AC bias current constant A DC bias 625 V 230 V and an AC bias are applied to the primary charging roller to maintain the surface potential of the photosensitive drum uniform During document exposure 625 V and non exposure periods 230 V DC bias is switched by the DC bias high output command HVPHO The DC bias and AC bias are turned ON and OFF by the DC bias ON command HVPDO and AC bias ON command HVPAC respectively Reference Unless the document is being illuminated the DC bias is switched to 230V to prevent adhesion of toner on the photosensitive drum COPYRIGHT 1998 CANON INC CANON PC400 420 430 F
78. Scanning lamp Electrical Parts Blower brush Remarks Drum cover shutter Well wrung moist cloth Be sure to clean the shutter particles of toner can cause soiled copies Transfer charging roller Fixing assembly Parts Lint free paper Tools Solverts Cleaning Do not use water or solvent Take care not to touch the roller or leave oil Remarks Inlet guide 10 4 Solvent Intensity AE sensor Cleaning Copyboard Tools Solvents Remarks alcohol Copyboard alcohol glass White alcohol reflecting strip Pick up roller assembly Parts Tools Solvents Dirt can soil the leading edge margin causing jams Remarks Pick up roller Well wrung moist cloth or alcohol Registration assembly Parts Tools Solvents Cleaning Remarks Registration Well wrung Cleaning roller moist cloth COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING Il STANDARDS AND ADJUSTMENTS A Mechanical 1 Image Leading Edge Non Image Width position of white paint on back of glass The leading edge non image width must be 2 0 1 0 mm when the Test Sheet is copied 2 0 1 0 mm Figure 10 201A The leading edge non
79. TED IN JAPAN IMPRIME AU JAPON 2 9 CHAPTER 2 BASIC OPERATION 2 10 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 3 EXPOSURE SYSTEM This chapter outlines the machine s copyboard drive and scanning lamp control Systems in relation to mechanisms and functions relationship between electrical and mechanical systems and the timing of operation of respective parts EXPOSURE COPYBOARD DRIVE B Operations 3 8 SYSTEM MC 3 1 C Controlling the Intensity of the A Outline of Exposure System 3 1 Scanning Lamp VR604 3 8 B Copyboard Drive System 3 1 IIl MECHANICAL SYSTEM 3 9 I Controlling the Scanning Lamp 3 7 A Scanning System 3 10 As QUINE 3 7 B Copyboard Drive Assembly 3 11 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON EE CHAPTER 3 EXPOSURE SYSTEM Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 3 EXPOSURE SYSTEM EXPOSURE COPYBOARD DRIVE SYSTEM A Outline of Exposure System While the copyboard is moving forward the scanning lamp through LA8 illuminates the document and the reflected light is projected to the photosensiti
80. TER 2 BASIC OPERATION B Outline of Electrical Circuit The copier s main electrical mechanisms are controlled by the microprocessor on the DC controller DC power supply PCB According to the program stored in advance the microprocessor reads input signals from the control keys and generates signals to drive such loads as motors solenoids and lamps as necessary DC controller DC power supply PCB NR Main motor Solenoid Copyboard position gt gt DC load Delivery sensor Pick up sensor Photointerrupter gt Fixing heater 4 Primary Transfer temperature sensor TH1 gt 5 charging roller o o Thermistor 9 E High voltage e gt transformer i Power switch m 5 Control key gt Display Q101 DC24V DC5V DC5V Sub power DC power supply circuit supply PCB YY D oo 06 OO Door Delivery Relay Heater switch door Switch m AC driver H AC load LH Driver Scanning lamp Figure 2 101B 2 2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON NENNEN CHAPTER 2 BASIC OPERATION C Basic Sequence of Operations A4 2 copies Copy paper inserted PC400 FC200
81. TRD Supply power to heater Figure 6 102C 6 4 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM D Protection Mechanisms The copier is equipped with the following protection mechanisms to prevent malfunction of the fixing heater 1 The microprocessor monitors the voltage of TH1 and displays EO PC420 430 FC220 Jam PC400 FC200 and turns the power off upon detec tion of any of the following conditions i The temperature of the fixing heater does not reach 80 C 2 5 sec after copying starts ii The temperature of the fixing heater does not reach 150 C within 7 5 sec after copying starts iii The temperature of the fixing heater drops to 135 C or less after it has reached 150 C iv The temperature of the fixing heater rises in excess of 215 C v The maximum power 400 W is detected for 5 sec continuously after the temper ature of the fixing heater has reached 150 C TH1 registers 234 C as the temperature of the fixing heater as a result the fix ing heater error temperature detection circuit causes RELAYD to go 0 and the relay RL101 to go OFF thereby cutting the power to the fixing heater The thermal fuse FU2 blows after it has reached 228 C and a specific time has passed to cut off the power to the fixing heater COPYRIGHT 1998 CANON INC CANON PC400 420 43
82. Violet detection White COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C GENERAL CIRCUIT DIAGRAM Fixing heater temperature sensor Intensity sensor w PD601 gt Thermal fuse 2 FU2 Fixing heater H1 Control panel PCB BK W J601 o ST DC controller DC power supply PCB J201 1 M M1 ain motor Registration solenoid Motor rotation detection Copyboard drive solenoid PC400 FC200 GENERAL CIRCUIT DIAGRAM A 5 PC420 430 FC220 GENERAL CIRCUIT DIAGRAM J HOT 2 Door switch Black Blue Brown Gray Green Orange Pink Red Sky Blue Violet White Yellow Yellow Green A 6 BK Low xL wL Fixing heater temperature sensor Thermal fuse 2 Fy2 Scannig lamp PCB AE sensor PD602 Intensity sensor PD601 Control panel J601 ON gt 9 OE gt zz OQ 2 dp 0 0 SW2 9108 50 J
83. a cotton wad 5 Checking the Transfer Charging Roller Check the transfer charging roller for scratches or other abnormalities 6 Checking the Feeding Assembly Check the feeding assembly for dirt If dirt is found clean it with a moist cloth 7 Checking the Copy Paper a Check to see if paper of a type recommended by Canon is used b Check to make sure that the paper is not moist Try paper fresh out of package 8 Checking the Durables Checking the Cartridge White spots or vertical white lines tend to appear when the cartridge starts to run short of toner see Figure 10 3014 Preface Thank you for urc copier copier its funct ons hod of use It to ensure safe opt e read this me in order to fam iari sith its capabili functions Ait yo ng this manua CAUTIO in this 7 7 AGES with this procedure It in personal in Figure 10 301A 10 12 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING Go over the following when this is noted 1 Take out the cartridge from the copier and rotate it several times Figure 10 302A 2 Setthe cartridge back into the copier and make copies copies are normal The user may use the cartridge for some time more however advise the user to procure a replacement cartridge b If the copies fail to return to normal Replace the c
84. artridge as described in Replacing the Cartridge COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 13 CHAPTER 10 TROUBLESHOOTING 9 Others In winter moving a machine from a cold storage room to a warm site can cause condensation inside the machine leading to various problems a Condensation on the scanning system glass lens array reflecting plate causes dark images b When too cold the photosensitive drum assumes a high electrical resistance resulting in poor contrast c Condensation in the pick up feeding assembly can cause faulty paper transport d Condensation in the lower roller of the manual pick up mechanism decreases friction leading to pick up failure e Condensation on the copyboard hinders its smooth movement When condensation is noted dry wipe the parts The same holds true of the cartridge After having moved the cartridge from a cold to warm room leave it alone for about one to two hours before unpacking it 10 14 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 15 CHAPTER 10 TROUBLESHOOTING Se B Samples of Image Faults not available 10 16 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 22
85. ction Mechanisms 6 5 6 3 Il MECHANICAL SYSTEM 6 6 A Fixing Assembly 6 7 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM OUTLINE OF OPERATIONS A Outline The pressure roller in the fixing assembly is driven by the main motor M1 The rotation of the pressure roller causes the fixing film to rotate Some sections of the underside of the fixing film is heated by the fixing heater The temperature of the fixing heater is monitored by the thermistor TH1 and the readings are sent to the microprocessor on the DC controller DC power supply circuit in the form of the fixing heater temperature sensor signal TH1 Based on the signal the microprocessor of the DC controller DC power supply circuit controls the temperature of the fixing heater by the fixing heater drive command HTRD COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 6 1 CHAPTER 6 FIXING SYSTEM NO 5V Relay drive command Relay RL101 __ RELAYD COM LEN
86. detection har J 801 3 E 603 3 H 1601 1202 LBH 84 DGTI Oscillation signal output T 1601 202 551207 14 When 0801 detects copy paper oscillation signal DGT1 is input 160 601 J202 Fixing heater 14 5511026 124 THI When surface temperature of fixing heater increases voltage lowers surface EP temperature detection 24 77 1621 1601 1202 POI lt gt See Chap 4 PD602 sensor Control panel PCB intensity sensor 1905 j201 eo 24 0870 Oscillation signal output Copyboard Yr position 0902 m When Q902 detects copyboard detection gt 3 4 KEYRO start position or reversal position T oscillation signal DGTO is input Zr Copyboard position detection PCB 45V 1904 E 2 2 4 Motor rotation detection Q901 14 MMCLK Clock pulses corresponding to el 3 revolution of main motor are generated Motor rotation detection PCB Pick DGT2 Oscillation signal yi jp output detection 0131 d L KEYRO When Q131 detects copy paper oscillation signal DGT2 is input Note The pin No in parentheses refers to the PC400 FC200 Figure 2 102E COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 2 7 CHAPTER 2 BASIC OPERATION F Outputs from DC Controller 1 Outputs from DC Controller 1 2 DC controller DC power supply PCB
87. e photosensitive drum is rotating except during development about 400 V is applied to the developing cylinder 4 8 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C 4 IMAGE FORMATION SYSTEM 5V Transformer Photo T106 TIT sensitive xi drum Q146 cylinder Amplifier A AE signal AE Density B control dial 5 8 202 VR601 o Density correction 5 switch E 5 E SW606 8 z Control panel Og og Y Ce lt lt Microprocessor DC controller DC power supply PCB Figure 4 104D COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Developing 4 9 CHPTER 4 IMAGE FORMATION SYSTEM E Transfer Charging Control Circuit 1 Outline Figure 4 101E shows the circuit that controls transfer charging and the circuit has the following functions Controls the constant current in measurement mode Controls the constant voltage of the DC bias Switches the polarities of the DC bias cleaning mode The internal resistance of the transfer corona roller tends to vary from one roller to another or because of changes in the environment The copier sends con
88. en density darker at front 5 The copy has uneven density lighter at front Checks YES NO Remedies Clean the scanning lamp reflecting plate and lens Is the problem corrected YES Cartridge Scanning lamp Transfer charging roller Press the Copy Start key and switch the copier OFF in the middle of operation then open the top cover Does the toner image on the photosensitive drum before transfer have uneven density 6 The copy is foggy overall Step Checks YES NO Remedies Clean the scanning lamp reflecting plate and lens 15 the problem corrected 1 Replace the cartridge 2 Replace the scanning lamp unit Check the transfer charg ing roller Scanning lamp Developing bias Grounding spring 10 18 Is continuity present between photosensitive drum PCB and grounding spring 1 Check if the scanning lamp goes ON normally 2 Check the developing bias Check to make sure if the grounding spring is prop erly attached in front of the cartridge COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 7 The copy is foggy paper feed direction 8 The copy has dark lines paper feed direction relatively narrow 9 The copy has dark lines paper feed direction thin Checks YES NO Remedies Clean the scanning lamp reflectin
89. en front and rear see Note 3 lt Optimum Density Adjustment gt Scanning system pick up feeding 15 gray scale No 9 barely noted See Note 2 problem corrected by the density correction switch Is optimum density obtained by adjusting the intensity of light See NO MAINTENANCE AND INSPECTION A Image Adjustment Basic Procedure End YES End 3 Density of gray scale No 1 see Note 3 4 Fogging in white area see Note 3 CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Check the following 1 Cartridge 2 Scanning lamp unit 3 DC controller DC power supply PCB see Troubleshooting by Image Fault Notes 1 If a mono color cartridge is used set the density control dial to 4 5 2 If is used refer to gray scale No 10 3 The machine is not equipped with an adjustment function for each type of image fault see Troubleshooting by Image Fault 4 For instructions on how to adjust the intensity of light see p 10 6 10 3 B Points to Note Photosensitive drum Cartridge Transfer charging roller Toner Remarks As a rule do not clean Do not use solvents Do not touch the drum Avoid light Optical assembly Tools Solvents Remarks Cotton wad Do not use the wire cleaner meant for conventional machines
90. eplace the fixing unit or roller DC controller DC power supply PCB Fixing heater Is the heater turned ON for control after copy operation is started The control temperature for the fixing heater may be low check the ther mistor and DC controller DC power supply PCB See The fixing heater fails to operate 15 The copy has faulty leading edge registration blank area much too wide 16 The copy has faulty leading edge registration blank area too wide 17 The copy has faulty leading edge registration no blank area Cause Checks YES NO Remedies Registration cam Solenoid SL1 DC controller DC power supply PCB Move the registration cam on the copyboard left and right Is there any change to the reg istration Is the solenoid for registration SL1 operating normally YES Adjust the position of the registration cam 1 Check the solenoid SL1 2 Check the DC con troller DC power supply PCB Pick up roller Copy paper COPYRIGHT 1998 CANON INC Is the copy paper of a type recommended by Canon Check the pick up roller CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Try copy paper of a type recommended by Canon if the results are good advise the user to use recommended paper 10 21 CHAPTER 10 TROUBLESHOOTING 18 The copy has a blurred image Cause Checks Y
91. eration The drive circuit on the DC controller DC power supply PCB causes the main motor drive command MMD to go 0 in response to instructions from the microprocessor thereby causing the main motor to rotate at a specific speed 3 Overcurrent Sensor When the overcurrent sensor circuit detects an overload in the main motor M1 the speed controller circuit exerts control so that the rotation of the motor is slowed down If the revolution of the main motor falls below a specific revolution however an error associated with E2 can occur Overcurrent detection circuit 5 o 9 J201 5 B 15 E 5 Main motor drive M1 D 5 4 command o Pus 8 0901 2 Motor rotation detection PCB Main motor clock pulse 1 signal MMCLK e A DC controller DC power supply PCB Figure 2 101D COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 2 5 CHAPTER 2 BASIC OPERATION E Inputs to DC Controller 1 Inputs to DC Controller 1 2 AC power supply Density correction switch PC420 430 FC220 Power switch Density adjustment dial lever 2 6 Door switch Delivery door switch
92. eshooting Malfunctions d EU LEER 10 24 1 8N self diagnosis PC400 FC200 10 24 2 Bliss 10 24 E2 TNR 10 25 4 he eae 10 25 ee 10 26 6 AC power is absent 10 26 7 Pick up fails 10 27 8 The scanning lamp fails to go OIN cs coe 10 27 9 The main motor fails to rotate ORTOS SN E 10 28 10 The copyboard fails to move 10 28 11 paper feeding normally 10 29 12 8 at time of jam 10 29 13 The fixing heater fails to V TROUBLESHOOTING PAPER FEED PROBLEMS 0 30 A Copy Paper Jams 10 30 1 Pick Up Assembly 10 31 2 Separation Feeding Assembly 10 31 3 Fixing Delivery Assembly ETUR 10 32 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON B Feeding Faults 10 33 1 Double Feeding 10 33 2 Wrinkles 10 33 VI FUNCTIONS AND ARRANGEMENT OF ELECTRICAL PARTS 10 34 A Sensors and Solenoids 10 34 B Switches sociatus 10 35 C Lamp Heater Motor and Others D Printed Circuit Board PCB 10 37 E Variable Resistors VR and APPENDIX A GENERAL TIMING CHART A 1 B SIGNALS ABBREVIATIONS LISTA 3 1 etit tei fete A 3 2 Abbreviations 4
93. fset use it only after replacing the scanning lamp unit intensity sensor AE sensor or control panel PCB Use it to adjust the AE gain use it only after replacing the scanning lamp unit intensity sensor AE sensor or control panel PCB Use it to adjust the light intensity use it only after replacing the scanning lamp unit intensity sensor AE sensor or control panel PCB Table 10 601E COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 39 ENS CHAPTER 10 TROUBLESHOOTING SELF DIAGNOSIS The copier s microprocessor on the DC controller DC power supply PCB is equipped with a self diagnostic mechanism that checks the condition of the machine when the mechanism detects an error it indicates an error code on the copy count display The PC400 FC200 does not have a copy count display it indicates an error condition by flashing the Jam indicator E6 is represented by alternating EC B Cause Description Thermistor TH1 faulty The temperature of the fixing heater is Fixing heater H1 faulty 215 C or more DC controller DC power supply faulty The temperature of the fixing heater does not reach 80 C within 2 5 sec after copying operation has started The temperature of the fixing heater lowers below 135 C after it has reached 150 C The temperature of the fixing heater does not reach 150 C within 7 5 sec
94. g roller in terms of voltage using the auxiliary winding of the transformer T107 b Operations during Copying HVTDC 1 DCTPWM 1 m Oscillation circuit goes ON Pulse DC converter circuit goes ON Voltage control circuit goes ON High voltage transformer T107 goes ON to apply a negative DC bias to the transfer charging roller TREV 1 E Positive bias control circuit goes OFF M Multiplier rectifier circuit goes OFF COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHPTER 4 IMAGE FORMATION SYSTEM The microprocessor varies the pulse width of the transfer DC bias control command DCTPWM according to the internal resistance of the transfer charging roller affected by the surrounding environment thereby controlling the negative DC bias If an overcurrent occurs in the output side of the transformer T107 because of changes in the environment the current limiter circuit exerts control so that no current larger than the specified value will flow C Operations in Cleaning Mode TREV 0 bore bias control circuit goes ON Multiplier rectifier circuit goes ON Cleaning mode is selected apply ping a positive DC bias to the transfer charging roller HVTDC 0 DCTPWM 0 Oscillation circuit goes OFF Pulse DC converter circuit goes OFF 4 12 COPYRIGHT 1998 CANON INC CANON PC400 420 430 F
95. g plate and lens 15 the problem corrected YES 10 The copy has white spots paper feed direction 11 The copy has white lines paper feed direction Cause Take out the cartridge and put it back in Is the problem corrected Checks End YES NO Replace the cartridge Remedies Fixing assembly Press the Copy Start key and switch the copier OFF in the middle of operation then open the top cover Does the copy image have white spots or white lines before fixing NO Check the fixing assembly Cartridge Rotate the cartridge several times 15 the problem corrected Advise the user that the cartridge is running short of toner Transfer charging roller Cartridge COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Is there foreign matter or scratches on the transfer charging roller Remove the foreign matter or replace the transfer charging roller Replace the cartridge 10 19 CHAPTER 10 TROUBLESHOOTING 12 The copy has white spots cross feed direction Cause Checks YES NO Remedies Copy paper Is the copy paper of a type rec NO Try recommended paper ommended by Canon if the results are good advise the user to use recommended paper Try copy paper fresh out of The copy paper may be package moist advise the user to Is the problem corrected store
96. h the delivery sensor within a specific period of time 1 PC420 430 FC220 Copy Start key ON Power switch ON CBRV Sequence STBY INTR COPY LSTR brey Copyboard CBRV STOP CBFW CBRV CBFW STOP Main motor M1 Copyboard posi 2 tion sensor Q902 LI an 0131 Delivery sensor normal error 4 Q801 5 Jam check 8 sec 8 sec Figure 5 401A A4 2 PC400 FC200 Copy paper inserted Copy paper inserted Power switch CBRV Sequence STBY INTR COPY LSTR Copyboard CBRV STOP CBFW CBRV CBFW STOP k Main motor M1 Copyboard posi 2 tion sensor Q902 aa 0131 Delivery sensor normal error 0801 Figure 5 402 A4 5 6 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C HA PT ER 5 PICK UP FEEDING SYSTEM B Delivery Stationary Jam The copy paper does not move past the delivery sensor within a specific period of time 1 PC420 430 FC220
97. hat P is indicated when the Copy Start key is pressed without setting copy paper PC420 430 FC220 8 4 Clean the exterior of the copier and the area around it COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 8 INSTALLATION IIl RELOCATING THE MACHINE If you must relocate the machine by truck or other means of transportation perform the following Remarks Switch the machine OFF and disconnect the power plug Take out the cartridge and fold Put the cartridge in its storage box and the copy tray and pick up tray place it to protect against vibration Tape the top cover in place Place a sheet of A4 LTR paper on the copyboard and tape the copyboard in place COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 8 5 CHAPTERS INSTALLATION 8 6 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 9 MAINTENANCE AND SERVICING This chapter outlines the machine s maintenance parts and how to make various checks l PERIODICALLY REPLACED PARTS IV NOTES ABOUT CARTRIDGE 9 2 TUTO 9 1 A Storing Sealed Cartridges 9 2 9 1 B Storing and Handling Unsealed IIl PERIODICAL SERVICING 9 1 Cartridges
98. he copyboard glass into the rail at the front and screw the rear rail portion in place 7 10 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS C DC Controller DC Power Supply PCB Detaching the DC Controller DC Power Supply PCB Detach the body cover Remove the drive release arm 1 Remove the screw 2 and discon nect the two connectors 3 Disconnect the four fastons 2 Detach the bottom cover Hold the flat cable 5 with both hands and detach them from the connector by lifting them straight up Disconnect the connector 6 Figure 7 202C front COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 7 11 EE CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 8 Disconnect the two connectors at the rear and detach the grounding wire 8 Caution The DC controller DC power supply PCB has high voltage contacts and pick up sensor lever take extra care not to damage the parts when detaching the PCB Figure 7 203C 9 Remove the screw M4X8 yellow ho 9 and disengage the hook 40 then detach the DC controller DC power i supply Qi Caution When attaching the DC controller DC power supply 0 make sure that lead wires are not E bitten or shor
99. he registration roller stops when the pick up solenoid PC420 430 FC220 or the registration solenoid PC400 FC200 goes ON to set the claw to the control ring Pick up solenoid SL1 PC420 430 FC220 Registration solenoid 511 PC400 FC200 Copyboard glass X C Op Claw SG Registration lt gt 24 Control ring cam f _ ar d gt ull YQ SiGe oA Upper registration roller L S Main motor m KS lt Pick up direction 7 c a 7 2 m c Lower registration rollers E g 26 d 8 Pick up sensor X E z Q131 PC420 CORY S 430 FC220 Lower registration E _ rollers when registration E 9 roller is ON gt poen registration 5 2 E roller is OFF 5 o 3 3 c x 1 5 DC controller DC power supply Figure 5 301A 5 4 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 5 PICK UP FEEDING SYSTEM B Pick Up Feeding Timing Chart A4 2 copies a PC420 430 FC220 r Copy Start key ON Power switch ONA CBRV Sequence STBY INTR COPY LSTR Copyboard CBRV STOP CBFW CBRV CBFW STOP 1 Main motor M1 RE H0 2 Copyboard position sensor Q902 3
100. hecks YES NO Remedies DC controller DC power supply PCB Power supply 6 AC power is absent Cause Replace the DC controller DC power supply PCB Is the problem corrected Checks YES End NO YES NO Advise the user that the frequency of the power supply is faulty Remedies Power plug Is the power plug connected to the copier and the power outlet Is E code PC420 430 FC220 or JAM PC400 FC200 indicated for about 0 5 sec after the power switch is turned ON and does the power turn OFF thereafter NO Connect the power plug Top cover Delivery assembly cover Are the top cover and delivery assembly cover closed properly Close the top cover and delivery assembly cover Power supply voltage Is the rated voltage present at the power outlet Advise the user that the problem is not of the copier Door switch Is the door switch SW1 SW2 normal Replace the door switch DC controller DC power supply PCB Is the rated power supply voltage present between J103 and J104 on the DC controller DC power supply PCB Set the meter to the 300V AC range Replace the DC controller DC power supply PCB Fixing assembly 10 26 Replace the fixing assembly Is the problem corrected fixing heater error temperature detection circuit ON End Replace the DC controller DC power supply PCB COPYRIGHT 19
101. id and measure the resistance between terminals of SL2 Is it about 120 Q Check the wiring from the solenoid to the DC con troller DC power supply PCB if normal replace the DC controller DC power supply PCB Check the solenoid SL2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 11 3 paper feeding normally Copy paper Sensor lever Delivery sensor PCB Q801 DC controller DC power supply PCB 12 9 at time of jam Cause Are there pieces of copy paper in the delivery assembly or pick up assembly Is the movement of the delivery sensor and pick up sensor levers smooth Replace the delivery sensor PCB Does the copier operate normally Checks Remove the pieces of paper Correct the movement End YES NO Check the wiring from the control panel PCB to the DC controller DC power supply PCB if normal replace the DC controller DC power supply PCB Remedies Control panel PCB DC controller DC power supply PCB Replace the control panel PCB Does the indicator go ON 13 The fixing heater fails to operate Cause Checks YES YES NO Replace the DC controller DC power supply PCB Remedies Heater H1 Thermal fuse FU2 Is continuity present between terminals of the heater NO Replace the fixing assembly
102. id goes OFF Scanning lamp ON Q902 ON The copyboard drive solenoid goes ON about gt Forward 0 5 second after the Copy Start key is pressed 9 AE measurement starts Registration roller goes ON by registration cam Continuous copying Copyboard is at the reversal position Copyboard drive solenoid goes OFF After a specific period copyboard drive solenoid ae ON Q902 0N OFF Pick up solenoid goes ON continuous copying Scanning lamp OFF For the last copy the copy board drive solenoid goes n i OFF at the copyboard home position ce Q902 ON OFF Table 3 101B 3 2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 3 EXPOSURE SYSTEM 2 Controlling the Copyboard Drive The copyboard is controlled for forward reverse and stop operations by the copyboard drive solenoid SL2 and forward reverse switching mechanism A photosensor Q902 is provided on the copyboard drive assembly to monitor the position of the copyboard as the copyboard moves the cam found under the copyboard pushes the copyboard sensor lever to turn the photosensor ON or OFF E2 is displayed if the copyboard fails to complete its movement withi
103. inst humidity Consumables Cartridge See CHAPTER 9 Specifications subject to change without notice COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 3 CHAPTER 1 GENERAL DESCRIPTION Ill NAMES OF PARTS A External View PC420 430 FC220 PC400 FC200 1 Copyboard cover Delivery assembly cover 2 Copyboard glass open close button 8 Pick up tray Delivery assembly cover 4 Open Close button 7 Copy tray Figure 1 301A CD Upper cover 2 Pick up guide 3 Density correction switch 4 Power switch 5 Cartridge Figure 1 302A 1 4 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION B Cross Section PC420 430 FC220 PC400 FC200 2 CD Copyboard cover Pick up tray 2 Copyboard glass di Transfer charging roller 8 Cleaning assembly 42 Photosensitive drum 4 Primary charging roller 3 Fixing assembly 5 Scanning lamp Delivery roller Lens array 5 Delivery tray 7 Developing cylinder Heat exhaust fan Registration roller 2 Delivery assembly cover 9 Pick up roller open close button
104. intensity of the scanning lamp COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 15 CHPTER 4 IMAGE FORMATION SYSTEM Forward Koo lamp X _ PD602 K 7 Lens array J621 Photosensitive drum 2 AW Developing cylinder J621 x 1 4 DC bias lt VR602 control DCBPWM circuit VR603 57 J601 J202 124 19 AE signal Microprocessor 5V Amplifier circuit Control panel PCB 4 16 DC controller DC power supply PCB Figure 4 103F COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHPTER 4 IMAGE FORMATION SYSTEM Ell Il CHARGING DEVELOPING AND CLEANING SYSTEMS A Cartridge 1 Outline The copier is a cartridge type in that its photosensitive drum primary charging roller developing assembly and cleaner are designed as a single entity Developing blade Primary charging roller Light blocking shutter Photosensitive drum C Cleaning blade Drum cover shutter Developing cylinder Figure 4 201A a Drum Cover Shutter The photosensitive drum is susceptible to light if exposed to strong light it will develop
105. it 2 5 As Outline 2 1 E Inputs to DC Controller 2 6 B Outline of Electrical Circuit 2 2 Outputs from DC Controller 2 8 C Basic Sequence of Operations A4 2 2 3 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 2 BASIC OPERATION Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON BASIC OPERATION A Outline CHAPTER 2 BASIC OPERATION The copier can be divided into four functional blocks pick up feeding exposure image formation and control blocks Control Block Control panel Control circuit Document exposure system Copyboard Optical path Primary charg ing roller Drum cleaning jf Copy tray Feeding Fixing assembly Delivery assembly COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Photo sensitive dru m Figure 2 101A Image Formation Block Developing assembly Transfer Srl We Separation Pick up r control assembly Pick up Feeding Block 2 1 CHAP
106. it stops 2 Puta cotton wad in the lens array groove and move it back and forth lightly Figure 1 401G 3 Open the upper cover and remove the cartridge 4 Put a flat tipped cotton wad in the lens array rear groove and move it back and forth Figure 1 402G COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 1 15 CHAPTER 1 GENERAL DESCRIPTION 3 Pick Up Roller 1 Open the top cover 2 Dry wipe the pick up roller while rotating it in pick up direction with a cloth Note Do not make copies until the pick up roller has completely dried Pick up roller Figure 1 403G H When Not Using the Copier for a Long Time Advise the user to perform the following if she he does not have any plan to use the copier for a long time 1 Disconnect the power plug 2 Place the copier in a dust free sunlight free place 1 16 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION V IMAGE FORMATION A Outline Copyboard glass Lens array Scanning lam glamp ns 5 Primary charging roller aa Developing blade m Fixing film Cleaning Developing
107. its and in relation to their timing of operation It also shows how these units may be disassembled assem bled and adjusted CHAPTER 7 Externals Auxiliary Mechanisms shows the copier s external parts and explains the principles used for the copier s various control mechanisms in view of the functions of electrical and mechanical units and in relation to their timing of opera tion It also shows how these units may be disassembled assembled and adjusted CHAPTER 8 Installation introduces requirements for the site of installation and shows how the copier may be installed using step by step instructions CHAPTER 9 Maintenance and Servicing provides tables of periodically replaced parts and consumables durables and scheduled servicing charts CHAPTER 10 Troubleshooting provides tables of maintenance inspection stan dards adjustments and problem identification image fault malfunction Appendix contains a general timing chart and general circuit diagrams COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON The following rules apply throughout this Service Manual 1 Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation In the diagrams TIT represents the path of mechanical drive where sig nal name accompanies
108. ixing heater 4 Presure roller Fixing film lower roller 3 Inlet guide Figure 6 201A 2 Detaching the Fixing Assembly 1 Detach the body cover 2 Disconnect the three connectors Figure 6 202A COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 6 7 CHAPTER 6 FIXING SYSTEM 3 While lifting the hook 2 slide the delivery door switch 3 to the front to remove 4 Detach the drive belt Figure 6 204A 6 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM 5 Remove the two screws M4X8 yellow 5 and turn the fixing assembly 6 slightly in the direction of the arrow to remove Caution 1 You cannot replace the fixing film or fixing heater do not disassemble them 2 Do not forget to attach the drive belt of the heat exhaust fan to the pulley when attaching the fixing assembly 3 Removing the Fixing Upper Unit Remove the fixing assembly 2 Remove the harness 7 and remove the hook 2 then remove the harness holder 3 Figure 6 206A COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 6 9 CHAPTER 6 FIXING SYSTEM 3 Remove the two hooks 2 and remove the drive releasing arm 5 Pull up to remove
109. key is REGISTRATION ROLLER 5 4 DN 5 9 A 5 4 V MECHANICAL SYSTEM 5 10 B Pick Up Feeding Timing Chart A Pick Up Roller Assembly 5 11 A4 2 COpIBS eec 5 5 B Registration Roller Assembly IV CHECKING FOR 5 o rcp cce 5 14 A Delivery Delay 5 6 C Removing the Separation Pad B Delivery Stationary Jam 5 15 COPYRIGHT 1998 CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 5 PICK UP FEEDING SYSTEM Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 5 PICK UP FEEDING SYSTEM OUTLINE The pick up roller starts to rotate when the Copy Start key is pressed in the case of the PC420 430 FC220 and when paper is inserted i e in response to the activation of the pick up sensor Q131 in the case of the PC400 FC200 The copy paper is controlled by the registration roller so that its leading edge matches that of the image on the photosensitive drum the paper is then moved to the transfer separation and fixing assemblies before it reaches the copy tray The delivery of copy paper is monitored by the delivery sensor Q801 if copy paper fails to reach or move past the sensor the copier identifies the condition as a jam and flashes Jam
110. l Cover Move the copyboard cover to the left until it stops Open the top cover and remove the screw 1 Detach the control cover 2 as if to lift it to the front Note When attaching the PC400 FC200 control panel cover fit the VR on the control panel PCB into the groove of the density control lever Control panel cover Bottom cover Top cover Body cover Delivery assembly cover Copyboard cover QOOWHLO Figure 7 201A Figure 7 202A COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 7 Detaching the Body Cover Detach the copyboard Detach the two cover plates 0 by pulling them up Detach the pick up tray and delivery tray Detach the control cover Open the top cover and take out the cartridge Press the delivery assembly cover open close button to open the delivery cover Note You must disengage the five hooks that hold the body cover in place before detaching the body cover Push the hook found down the hole 3 in the body cover with a screwdriver and lift the body cover slightly Figure 7 203A Figure 7 204A right view COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 7 5 CHAPTER 7 EXTE
111. n a specific period of time In response to the signal from Q902 the DC controller controls the timing for paper transport and the movement forward reverse stop of the copyboard see Table 3 101B Start position cam Registration cam Forward Copyboard position sensor signal J201 Copyboard drive gear y 10 Copyboard drive solenoid drive command CBSD J201 Copyboard drive solenoid 512 DC controller DC power Forward F orward Reverse supply PCB gear switching mechanism J201 4 Main motor drive command MMD Main motor Figure 3 102B Front View COPYRIGHT 1998 CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 3 3 EE CHAPTER 3 EXPOSURE SYSTEM 3 Mechanism of Copyboard Drive Assembly The forward gear and reverse gear are rotating in the direction of the arrow Figure 103B while the main motor M1 is operating The forward reverse switching mechanism engages with either the forward gear or the reverse gear depending on the orientation of the copyboard position sensor lever and the state ON OFF of the copyboard drive solenoid SL2 operated by the start position cam or reversal cam when not engaged the mechanism is said to be free and the copyboard can be moved by hand The above mechanism is used to move the copyboard forward and reverse or to stop it Copyboard
112. nals of VR602 and JP607 and VR603 Between terminals of VR603 and JP621 see Figure 10 201B Attach the new control panel PCB to the copier B VR603 A VR602 C VR604 Control panel PCB 20 e C A rm U JP607 B JP621 A Figure 10 201B PC420 430 FC220 10 6 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING C VR604 _ JE D Control panel PCB C R614 Figure 10 202B PC400 FC200 b After Replacing the Scanning Lamp Unit Intensity Sensor or AE Sensor Before Adjustment e If the scanning lamp has blackened replace it e Clean the scanning system lens array lamp reflector lamp 1 Set the cartridge to the copier 2 De select AE and set the copy density control lever dial to the center 3 Set the density correction switch SW606 to the center PC420 430 FC220 4 Set the Test Sheet NA3 NB3 NA2 and make a copy 5 Check if the copy is free of fogging and gray scale No 9 No 10 if NB3 is some what visible e If too dark Turn VR604 on the control panel PCB clockwise slightly to increase the intensity If too light Turn VR604 counterclockwise slightly to decrease the intensity 6 Repeat steps 4 and 5 until the density is optimum No
113. nstall the machine The product is carefully adjusted and strictly inspected before it leaves the factory therefore proper installation is very important in maintaining its out of factory performance Make sure that all the conditions discussed in this chapter are satisfied before installation and carry out all necessary inspections after installation SELECTING THE SITE 8 1 IIl RELOCATING THE MACHINE 8 5 Il UNPACKING AND INSTALLATION 8 2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTERS INSTALLATION Blank Page COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON NENNEN CHAPTER 8 INSTALLATION SELECTING THE SITE Make the following considerations when selecting the site for the machine It is a good idea to visit the site before delivery of the machine The site should provide an exclusive power outlet with a grounding terminal The temperature and humidity of the site must be 7 5 to 32 5 C 45 5 to 90 5 F and 5 to 85 respectively Avoid areas near water faucets water boilers humidifiers or refrigerators Avoid areas near open fires and areas subjected to dust ammonium gas or sunlight If necessary provide curtains The site must be well ventilated The floor must be level ensuring all copier s feet will remain in con
114. o not bring near fire e g metal fluorine chlorine family Procure locally oil or toner dirt Alcohol 3 Heat resisting Lubricating Lithium soap CK 0427 500 g can grease drive assemblies mineral oil family Molybdenum bisulfate 4 Lubricating oil Mineral oil paraffin family CK 0451 100 cc 5 Lubricating oil Mineral oil paraffin family CK 0524 100 cc A 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION CANON INC Printed in Japan REVISION 0 JAN 1998 23715 5 1 Hakusan 7 chome Toride shi Ibaraki 302 Japan Canon This publication is printed on 70 reprocessed paper PRINTED IN JAPAN IMPRIME AU JAPON 0198M2 01 1
115. odel Manual pick up Multifeeder AE 220 420 430 Not available Available Available FC200 PC400 Available Not available available This Service Manual consists of the following chapters CHAPTER 1 General Description introduces the copier s features and specifica tions shows how to operate the copier and explains how copies are made CHAPTER 2 Basic Operation provides outlines of the copier s various mechanical workings CHAPTER 3 Exposure System discusses the principles of operation used for the copier s lens drive unit and scanner drive unit It also explains the timing at which these drive units are operated and shows how they may be disassembled assembled and adjusted CHAPTER 4 Image Formation System discusses the principles of how images are formed It also explains the timing at which the various units involved in image for mation are operated and shows how they may be disassembled assembled and adjust ed CHAPTER 5 Pick Up Feeding System explains the principles used from when copy paper is picked up to when a copy is delivered in view of the functions of electrical and mechanical units and in relation to their timing of operation It also shows how these units may be disassembled assembled and adjusted CHAPTER 6 Fixing System explains the principles used to fuse toner images to transfer media in view of the functions of electrical and mechanical un
116. ok D and detach the solenoid 2 3 Remove the spring 3 and detach the claw of the control ring by pulling it up COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON ESSE Figure 5 502A 5 11 ENS CHAPTER 5 PICK UP FEEDING SYSTEM 4 Bend the holding plate 5 and detach the pick up roller bushing 6 by pulling it to the front 5 Move the pick up roller assembly 7 D to the front and detach it from the rear m N 7 NM Figure 5 504A 6 Disengage the hook 8 and detach 49 the pick up roller 10 from the pick up roller shaft 9 2 Figure 5 505A 5 12 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 5 PICK UP FEEDING SYSTEM b PC400 FC200 1 Detach the body cover 2 Bend the pick up roller support CD and detach the pick up roller 2 from the rear by pulling it to the front Figure 5 506A COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 5 13 CHAPTER 5 PICK UP FEEDING SYSTEM B Registration Roller Assembly 1 Detaching the Registration Roller Assembly 1 Detach the copyboard drive assembly 2 Remove the two screws M4X10 black
117. on each side no more than three times 5 mm deep about 50 sheets of A4 80 g m Copy tray 9 copies approx A4 LTR 80 g m Non image width 2 mm leading edge A4 0 mm left right LTR LGL 2 mm left right Auto power off PC430 only Available 5 min approx COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON N CHAPTER 1 GENERAL DESCRIPTION Item PC400 FC200 PC420 430 FC220 Temperature Operating Humidit environment y 7 5 to 32 5 C 45 5 to 90 5 F 596 to 8596 Atmospheric pressure 810 6 hPa to 1013 3 hPa 0 8 to 1 atm Serial numbers Serial numbers 120V 60Hz ZTG PC400 WHITE _ NVD ZTH XXXXX PC400 GRAY FC220 WHITE PC420 WHITE 230V 50Hz RTL PTQ RTM PTR XXXXX FC220 WHITE FC200 WHITE PTS FC220 WHITE UTP UTQ PTT Xxxxx FC220 WHITE Maximum 0 7 kW or less Power consumption 0 1 W approx 5 min reference only Continuous 0 2 kWh reference only Copying 71dB Sound power level Noise Standby Ozone by ISO 0 01 ppm or less average over 8 hr Width 14 1 in 359 mm Dimensions Depth 15 7 in 402 mm Height 4 1 in 108 mm Weight including cartridge 16 6 Ib 7 4 kg approx Copy paper Keep wrapped to protect aga
118. or heaters Avoid areas where dust ammonium gas or gases from organic solvents tend to accumulate Keep the cartridge in a place 40 C 104 F or less Handling the Cartridge When setting the cartridge to the copier or if the toner starts to run short hold the cartridge horizontally as shown in Figure 9 401B and rotate it in both directions about 90 to even out the toner inside it Do not shake the cartridge or hold it in a different way otherwise toner may leak out the cartridge Figure 9 401B COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 9 3 CHAPTER 9 MAINTENANCE AND SERVICING b Do not place the cartridge upright or upside down do not shake it Figure 9 402B 9 4 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON NENNEN CHAPTER 9 MAINTENANCE AND SERVICING C Do force open the shutter for the photosensitive drum cover found the bottom of the cartridge do not touch the surface of the photosensitive drum Caution If the surface of the photosensitive drum has become soiled wipe it using a flannel cloth coated with toner Do not dry wipe it or use solvent Do not disassemble the cartridge Do not subject the cartridge to vibration or impact in particular do not force down the photosensi
119. otation At the time copy paper is picked up and butted against the registration roller forming an arch Pick up solenoid SL 1 gt Tan OQ Copy paper Spring clutch Pick up direction Control ring Main motor Pick up roller Figure 5 201A 5 2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C HA PT ER 5 PICK UP FEEDING SYSTEM B PC400 FC200 When the pick up sensor Q131 detects copy paper the main motor M1 goes ON causing the pick up roller to rotate by its drive The pick up roller keeps rotating as long as the main motor remains ON The condition causes the copy paper to butt against the registration roller Copy paper a Pick up direction Pick up rollers Main motor Sensor lever Pick up sensor 0131 Main motor drive command MMD Pick up sensor oscillation signal DC controller DC power supply PCB Figure 5 201B COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 5 3 ENS CHAPTER 5 PICK UP FEEDING SYSTEM Ill CONTROLLING THE REGISTRATION ROLLER A Outline The registration roller rotates when the registration cam found under the copyboard glass pushes the lever while the copyboard is moving forward see Table 3 2 and Figure 3 28 Frees the claw that holds the control ring T
120. pen the top cover and take out the cartridge 2 Wipe off the dirt from the transfer charging roller lightly using lint free paper Caution 1 Do not use water or solvent 2 Do not touch the roller make sure the roller is free of solvent or oil 2 Detaching the Transfer Charging Roller 1 Open the top cover and take out the cartridge 2 Free the tabs D of the base plate and take out the transfer charging roller 2 by pulling it up together with its bushings at this time remove the spring as well Caution Make sure that the spring is fitted over the boss in the center of the hook when attaching the transfer charging roller see Figure 4 302B Figure 4 302B 4 20 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 5 PICK UP FEEDING SYSTEM This chapter outlines the machine s pick up feeding system in relation to mechanisms and functions relationship between electrical and mechanical systems and the timing of operation of respective parts l S FIIBI cp 5 1 C Pick Up Delay Jam Il CONTROLLING THE PICK UP PC420 430 FC220 5 8 ROLLER CT 5 2 D Pick Up Stationary Jam 5 9 A PC420 430 FC220 5 2 E Paper is present at the pick up B 400 200 5 3 delivery sensor at time of power Ill CONTROLLING THE on or when the Copy Start
121. pies 185 C if for 16 copies or more C Controlling the Supply Power to the Fixing Heater The temperature of the fixing heater H1 is controlled by controlling the power supplied to the fixing heater The power to the fixing heater is controlled by a phase power control method The microprocessor on the DC controller DC power supply circuit takes on the zero cross signal ZXDP from the zero cross signal generator circuit as a sync signal to identify the AC input voltage in relation to the reference voltage signal VPEAK from the reference voltage sensor circuit Using the reading the microprocessor controls the fixing heater drive command HTRD power to attain the specific target temperature for the fixing heater in other words exerting phase control on the supply power to the fixing heater Further E9 is indicated on the control panel if the zero cross signal ZXDP falls below a specific value because of an error in the frequency of the power supply Reference voltage CJ 8 B sensor circuit Microprocessor Zero cross ZXDP signal generator circuit DC controller DC power supply PCB Figure 6 101C COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 6 3 CHAPTER 6 FIXING SYSTEM AC input signal ZXDP signal VPEAK signal H
122. quence STBY INTR COPY LSTR STBY Copyboard CBRV STOP CBFW CBRV CBFW CBRV STOP 1 Main motor M1 2 Document position sensor Q902 HEIN HN 3 Copyboard drive solenoid SL2 Hi n r n F 4 Scanning lamp LA1 LA8 5 Fixing heater H1 6 Primary AC bias 7 Pri DC bi 240V 625V rimary ias 4 8 Developing AC bias 204 9 Developing DC bias 400V 120 to 560V A i 4 gt 10 Transfer 1 11 Pick up sensor Q131 12 Pick up solenoid SL 1 13 Delivery sensor Q801 Cleaning mode Measurement mode A 2 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON APPENDIX EN B SIGNALS ABBREVIATIONS LIST What follows below is a list of signals and abbreviations used in the chapters of the manual and circuit diagrams The abbreviations within parentheses represent analog signals which cannot be expressed in terms of 1 or 0 1 Signals ACBTP AE CBSD DCBPWM DCTPWM DGTO DGT2 HTRD HVPAC HVPDC HVPHO HVTD
123. rd cover 7 Y Document ip ize index Figure 1 401B 3 Adjust the copy density to suit the document Slide the pick up guide to suit the size of copy paper Set copy paper on the pick up tray SEN PC420 430 FC220 Place a stack of copy paper of a size suited to the document on the pick up tray make sure the edges of the sheets are flush The stack may be 5 mm about 50 sheets of plain paper CT Figure 1 402B 6 Set the copy count PC420 430 FC220 Set the number of copies to make 1 to 9 or F using the key and check the Copy Count indicator 1 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON NENNEN CHAPTER 1 GENERAL DESCRIPTION 7 Press the Copy Start key PC420 430 FC220 To stop continuous copying press the Clear Stop key the copier finishes the ongoing copy and stops The copy count displays the initial count Copying on OHP Film Set one sheet of film on the pick up tray for each copy Depending on the environment of the site a press on the Copy Start key may not pull the film inside the copier if this is the case perform the following 1 Place copy paper under the film stagger the sheet and film so that the leading edge of the film is about 1 cm behind that of the paper 1cm E c Figure 1 403B 2
124. residual memory causing white spots or black lines on the copies To avoid such problems you must not open the drum cover shutter unless it is absolutely necessary The drum cover shutter is designed to open when the cartridge is inserted into the copier and the copier s top unit is closed b Light Blocking Shutter The absence of a cartridge inside the copier allows light to enter the inside of the copier from the opening created for exposure The light blocking shutter is provided to protect the photosensitive drum against intrusion of such light COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 4 17 CHPTER 4 IMAGE FORMATION SYSTEM SYSTEM Here the copier is discussed in terms of its mechanical characteristics and operation and how to disassemble and assemble it Be sure to observe the following for disassembly assembly work 1 Disconnect the power cord for safety before disassembly or reassembly work 2 Unless otherwise noted reassembly is the reverse of disassembly 3 Group the screws by type length and diameter and location 4 One of the mounting screws used on the rear cover is provided with a washer to protect against static electricity Be sure to keep the washer with the screw when mounting the cover 5 The fixing screw for the grounding wire and varistors is fitted with a washer to ensure electric continuity be sure to
125. stant current to the transfer charging roller so that the microprocessor can check the changes in terms of voltage measurement mode Based on the measured voltage the microprocessor corrects the DC bias Further the copier is equipped with a cleaning mechanism cleaning mode that prevents adhesion of toner to the transfer charging roller In cleaning mode while the drum is rotating except during transfer a DC bias is applied to the transfer charging roller with a reversed polarity thereby returning the toner to the photosensitive drum Measurement mode Transfer negative DC bias Cleaning mode positive DC bias 4 10 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON C 4 IMAGE FORMATION SYSTEM 2 Operations Operations in Measurement Mode HVTDC 1 DCTPWM 0 gt Oscillation circuit goes ON gt Constant current control circuit generates ON Measurement mode is selected applying a constant current to the transfer charging roller TREV 1 Positive bias control circuit goes OFF High voltage transformer rectifier circuit goes OFF In measurement mode the current is monitored by the current sensor circuit so that the constant current control circuit can control it to a constant current Further the microprocessor monitors the internal resistance of the transfer chargin
126. t Scanning lamp LA1 LA8 Is the scanning lamp black Replace the scanning lamp unit DC controller DC power supply PCB Connector COPYRIGHT 1998 CANON INC Is the connector of the scanning lamp connected firmly Replace the DC controller DC power supply PCB CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON Re connect the connector 10 27 CHAPTER 10 TROUBLESHOOTING 9 The main motor fails to rotate Cause Checks YES NO Remedies Main motor M1 DC controller DC power supply PCB Set the meter to the 30VDC range Does the voltage between J903 1 and J903 2 change from about 0 V to about 20 V according to the operation of the main motor 10 The copyboard fails to move Cause Checks YES YES NO Replace the main motor Check the wiring from the motor to the DC controller DC power supply if normal replace the DC controller DC power supply PCB Remedies Main motor M1 Is the main motor rotating NO See The main motor fails to rotate Copyboard Copyboard drive assembly Push the copyboard by hand Does it move smoothly NO Check the copyboard and copyboard drive assembly DC controller DC power supply PCB Copyboard drive solenoid SL2 10 28 Set the meter to the 200 Q range Disconnect J902 from the copyboard drive soleno
127. tact The copier must be at least 3 9 in from all walls enabling sufficient space for maintenance and copying work 10cm 3 9in min Figure 8 101 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 8 1 CHAPTER 8 INSTALLATION Il UNPACKING AND INSTALLATION Moving a metal object from a cold to warm place can cause droplets of water to appear on its surface The phenomenon is known as condensation and condensation in the copier can trigger such problems as blank copies If any such problem is expect ed leave the copier alone at the site of installation at least one hour before unpacking it Work Description Open the shipping carton Take out the accessories Make sure that the Operator s Manual is in the box Remove the cover bag from the copier Check the covers for damage and deformation caused and detach all strips of tape that hold during transit parts Slide out the manual feed tray Slide out the delivery tray Move the copyboard to the left until it stops and press the open close button to open the copier s top cover Pull the two cardboard pieces if found inside the copier at either end of the charging roller straight up and out of the copier Note Do not touch the transfer charging roller inside the copier Cardboard Take out the cartridge from the bag If the
128. ted or the connectors are not disconnected Figure 7 204C 7 12 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 2 Points to Note When Installing the Fastons ME US Delivery Door Switch black harness Door switch Caution Fastons When inserting the fastons into the door switch make sure that the correct fastons are connected as identified by color Figure 7 205C Fastons gray harness Figure 7 205C COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 7 13 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS D Control Panel PCB Note You must adjust the VR for intensity and AE PC420 430 FC220 after replacing the control panel PCB Detach the body cover 2 Disconnect the three connectors Hold the flat cable 2 with both hands and detach them from the connector by lifting them straight up Figure 7201 4 Disengage the hook 3 and detach the control panel 2 by pulling it up T 3 1 Detaching the Control Panel PCB ENSE IY 7 14 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 8 INSTALLATION This chapter outlines how to i
129. ter finishing the Ongoing copy During standby the key serves as a Clear key setting the copy count to Copy Start Key 9 Power Switch Density Correction Switch Switches copy density among three settings top for darker bottom for lighter The density is switched by varying the developing bias COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION 2 PC400 FC200 ON OFF 19 lighter darker D Figure 1 402A right view Density Control Lever Density Indicator Jam Indicator e Flashes when paper jams inside the copier e Goes and remains ON when an error self diagnosis occurs in the copier 4 Main Indicator Remains ON when copying is ready 5 Power Switch OVO COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION B Making Copies Switch the copier ON If necessary wait until the intensity of the scanning lamp reaches the specified value The wait time is about 0 second The copier will shut itself off in about 5 minutes if left alone without key operation Lift the copyboard cover and place a document face down along the size index Place the document so that its center is at lt on the size index Figure 1 401B then close the copyboa
130. tes After adjusting the intensity be sure to adjust the AE mechanism PC420 430 FC220 COPYRIGHT 1998 CANON INC PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 10 7 CHAPTER 10 TROUBLESHOOTING 2 Adjusting the AE Mechanism VR602 VR603 Before Adjustment Obtain a newspaper whose text consists of fine print do not use a section with photos or large characters Make sure you have adjusted light intensity 1 Switch the copier OFF 2 Detach the control panel cover 3 Turn VR602 and VR603 on the control panel PCB fully clockwise 4 Place a newspaper over the AE light receiving section of the copyboard and close the copyboard cover p 27 light receiving section Figure 10 203B 10 8 COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 10 TROUBLESHOOTING 5 Short the three jumper wires JP604 JP605 JP607 on the control panel PCB at the same time using a screwdriver Caution Take adequate care not to short wires other than those specified JP607 JP605 JP604 Figure 10 204B 6 While keeping the condition in step 5 switch the copier ON 0 is displayed the scanning lamp goes ON and the main motor starts to rotate 7 Stop shorting the jumper wires Set the digital multimeter to the 20V DC
131. tive drum from above the shutter for the drum cover Keep the cartridge out of reach of children The photosensitive drum is susceptible to light and therefore equipped with a light blocking shutter nevertheless exposure to light for a long time can affect the drum resulting in copies with white spots or vertical lines Leave the copier alone for some time for possible recovery to avoid residual memory which results in white spots or vertical lines however keep the following in mind Caution Work quickly when removing jams or replacing cartridges When the cartridge must be removed for work be sure to put the cartridge in its storage box or cover it do not leave it without protective measures once it is out side the copier Advise the user to send all used cartridge to the address given and according to the instructions in the User s Guide Caution Do not subject any used cartridge to fire or it may burst or explode If a used car tridge must be dealt with at the site make sure it is disposed of as incombustible waste The drum would recover to more or less its normal condition if left alone for five minutes in a dark place after exposure to an intensity of 1500 lux about 5 minutes under general lighting However you must try to avoid any exposure The rays of the sun have intensities ranging between about 10000 and 30000 lux COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPA
132. ut 10 sec The scanning lamp illumi nates the document and the reflected optical image is projected to the photo sensitive drum through the lens array The copy paper is moved to the transfer assembly CBRV Copyboard Reverse While the copyboard is moving in reverse about 4 sec Returns the copyboard to the start position in preparation for the next copy if last copy the copyboard is returned to the home position In continuous copying the pick up signal is gen erated for pick up operation LSTR Last Rotation 2 4 After CBRV for the last copy is over until 3 sec after the copy paper has moved past the delivery sensor Discharges the last copy Table 2 101C COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON NENNEN CHAPTER 2 BASIC OPERATION D Main Motor Control Circuit 1 Outline Figure 2 101D shows the circuit that controls the main motor M1 and the circuit has the following functions a turns the main motor ON and OFF b controls the main motor speed constant The main motor M1 is a DC motor and is equipped with a motor rotation sensor Q901 to serve as a clock pulse generator Clock pulses MMCLK corresponding to the revolution of the motor are generated while the motor is rotating The speed control circuit controls the speed of the motor with reference to these clock pulses 2 Op
133. utline peleas B Power Supply PCB 7 2 B Assembly 7 9 C Protection Mechanism for Power 1 Detaching the Copyboard Supply Circuit 7 2 eor cR 7 9 MECHANICAL SYSTEM 7 3 2 Detaching the Copyboard 7 9 A External Covers 7 4 C DC Controller DC Power SUPPI 1 Detaching the Control Panel o ect COVOl Cea e 7 4 1 Detaching the DC 2 Detaching the Body Cover Controller DC Power Supply ncc EC 7 5 0 3 Detaching the Top Cover 2 Points to Note When Installing Assembly 7 7 the Delivery Door Switch 7 13 4 Detaching the Delivery D Control Panel 7 14 Assembly 7 7 1 Detaching the Control Panel gef 7 14 CHAPTER 8 INSTALLATION SELECTING THE SITE 8 1 RELOCATING THE MACHINE 8 5 Il UNPACKING AND INSTALLATION UNE 8 2 CHAPTER 9 MAINTENANCE AND SERVICING I PERIODICALLY REPLACED PARTS B Storing and Handling Unsealed Em 9 1 Cartridges 9 3 I DURABLE S 9 1 1 Storing Unsealed Cartridges Ill PERIODICAL SERVICING gt 9 3 IV NOTES ABOUT CARTRIDGE 2 Handling the Cartridge 9 3 A Storing Sealed Cartridges 85 CHAPTER 10 TROUBLESHOOTING MAINTENANCE AND INSPECTION mop
134. ve drum through the lens array Copyboard glass Scanning lamp Lens array Photosensitive drum Figure 3 101A B Copyboard Drive System 1 Outline The copyboard is moved forward or in reverse by transmitting the drive of the main motor M1 to the copyboard drive gear pinion Figure 3 101B illustrates the movement of the copyboard CD Copyboard Home 2 3 Copyboard Start 4 Copyboard Reversal 5 Home Position HP Position SP Position Position Copyboard Reverse Forward Reverse Stop lt gt gt gt gt Continuous copying Figure 3 101B Front View COPYRIGHT 1998 CANON INC CANON PC400 420 430 FC200 220 REV 0 JAN 1998 PRINTED IN JAPAN IMPRIME AU JAPON 3 1 CHAPTER 3 EXPOSURE SYSTEM Copyboard posi tion sensor Q902 Description Copyboard position cams Forward Reverse Copyboard is at the home position Reversal cam Copyboard solenoid goes ON in response to a press on the Copy Start key or Reverse insertion of copy paper Copyboard eats sensor Registration cam Start position cam lever Copyboard position sensor 0902 front view Copyboard is at the start position Copyboard drive soleno

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