Canon NP3050 Service Manual Download

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Summary of Contents for NP3050

Page 2: ...dition they may be reduced enlarged at four fixed reproduction ratios each The copies may be as large as A3 Ledger or as small as a postcard in size further a wide variety of paper materials may be us...

Page 3: ...Indirect electrostatic Corona Slit moving light source Automatic AE or Manual Dry projection 2 cassettes 2 cassettes option or paper decks option Manual feed tray Corona Corona felectrostaticl I Clean...

Page 4: ...or Letter 1 copy if A3 64 LDG Two sided Overlay Automatic etc from 128 5mm to 297mm in feeding direction from copy 297mm to 431 8mm in crossfeeding direction NP3050 only Manual Plain paper 64 to 128...

Page 5: ...xx UFC xxxxx 0 693 kW h ref only 0 168 kW h ref only 71dBorless POWER SOUNDLEVEL measurement SD 50dBorless POWER SOUNDLEVEL measurement ISQ 0 1 ppm or less 775 mm 130 5 in 665 mm 26 2 in 623 mm 24 6 i...

Page 6: ...mm 19 85 162 x 257mm 30 1 0 707 f 1 O A3 A4R 22 B4 t B5R 24 REDUCE 1 0 616 1 O 84 A4R 22 1 0 665 t 1 O f 84 85 1 1 414 1 0 2 A3 04 1 ENLARGE 1 1 224 C 1 O A4R 84 20 1 1 154 1 0 z A3 16 A4 24 Table 1 2...

Page 7: ...te Feeding Unit El Paper size Same as copier Power supply Dimensions Weight 24 VDC from copier 705 W x 576 D x 334 H mm 27 8 W x 22 3 D x 13 2 H in 34 5 kg 76 06lb including 2 cassettes G Paper Deck P...

Page 8: ...r 0 Copyboard cover Manual feed tray Power switch 8 Cassettes Figure l l 0 Feeder assembly Q Hopper release lever Right door 0 Fixing assembly Lower feeder knob assembly NP3050 only Figure I 2 COPYRIG...

Page 9: ...J CD unit roller No 4 mirror 0 Cassette 1 pick up No 5 mirror roller Developing assembly I Registration roller black Pre transfer corona 0 Manual feed pick up assembly roller Transfer corona Vertical...

Page 10: ...r I Primary corona Vertical path roller 1 assembly IBlank exposure lamp Vertical path roller 2 Cassette 2 pick up roller Cassette 1 pick up roller 0 Registration roller Pre transfer corona assembly Tr...

Page 11: ...t El i_ _ 8 0 0 Cassette 4 pick up roller I Vertical path roller 4 0 Cassette 3 pick up roller Cassette 3 0 Vertical path roller 3 Cassette 4 Figure l 4 COPVtIGHT 0 19n CANON HIC CANON NFXWflCGO REV 2...

Page 12: ...Deck Pedestal El l 10 0 Pick uproller I Separation roller Feeder roller 0 Deck 0 Deck registration roller Lifter Figurel 5 COPVAlGHl 1991 CANONINC CANON NP395013fflOREY l AUG 1991 PAlNTEOlNJAPAN IMPWM...

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Page 16: ...Guide to Cohtrol Panel ction ratio selected paper size h 1copy auto pape COPVMGHT 0 15 CANON iIC CANON NR4500030 REV 2 OCT 1991 FWlED IN JAPAN tMPRIYE AU JAPON l 13...

Page 17: ...ck the count on the copy count indicator a If the count cannot be set or to correct a mis take press the CLEAR STOP key and start again 7 Press the COPY START key 0 The documents set on the RDF s docu...

Page 18: ...be changed in the asterisk mode C Automatic Start The automatic start mode can be activated while the copier is in the wait period Place the documents set the copy mode and press the COPY START key Th...

Page 19: ...w Document automatic count NP3050 only Density correction W Corona wire cleaning l 16 Table I 3 Asterisk Mode Original size a s 2 Enter the document size using the numeric keypad and press the key Ent...

Page 20: ...eder and making two sided copies of one sided documents the documents are counted without copying so the first page document will be copied on the face side if an odd number of documents are set the l...

Page 21: ...darker copies press the lighter key for lighter copies 3 Press the q key to return to the standard screen l 18 COPYMXl 0 1981 CAtIoN INC Clean Corona Wires 1 YES 2 NO l 2 2 Press the Ikey the wires w...

Page 22: ...copy paper on the RDF s document tray 3 Press the q key The sheets will be picked up automatically and the RDF operates as if in the document count mode cleaning the parts The mode is cleared automat...

Page 23: ...ecification 4 2 COLOR key inside black outside Press it using the hand held pen when specifying mono the 2 color mode inside mono outside black 5 Z COLOR inside black outside Press it using the hand h...

Page 24: ...m go through the following steps to remove the jam Figure 1 8 Regist ration roller knob Figure 1 9 2 Zone 2 fixing delivery assembly 1 Detach the delivery tray and open the delivery door H If the pape...

Page 25: ...emove the jam Figure l 1 3 Figure l 11 l 22 4 Zone 4 1 Lift the manual tray cover and remove the jam Manual tray cover 1 c Lower feeder assembly lever G Pick up from Cassette Feeding Unit El 1 Remove...

Page 26: ...left deck out and to the front and remove the jam Left er right door Grip Figure1 15 3 Slide the right deck out and to the front and remove the jam Figure 1 17 5 Slide the left feeder assembly out an...

Page 27: ...from the copier 2 Open the side door Figure l 20 3 Lift the metal plate and remove the jam Figure 1 21 4 Pull the paper deck out until it stops and remove the jam Figure 1 22 1 24 COPVAffiHTO 1991 CAN...

Page 28: ...re 1 23 2 Remove the paper from its package and turn the paper upside after removing it from the package Figure l 24 3 Place the paper on the lifting plate of the cas sette push down on the leading ed...

Page 29: ...it to the front as far as possible Figure l 26 2 Open the package and take out the paper see Figure l 27 1 26 Figure 1 27 3 Set the paper in the deck see Figure1 28 Figure 1 28 4 Set the deck in the...

Page 30: ...deck and slide out it to the front as far as possible Figure 1 29 2 Open the package and take out the paper Figure 140 3 Set the paper in the deck Figure 1 31 COPVRlGHT 1991 CAMON INC CANON NP3050 393...

Page 31: ...e 1 33 4 Hold the toner cartridge so that the arrow on its top faces up After fitting the protrusion on the cartridge end into the hopper bring the cartridge into level contact with the hopper with th...

Page 32: ...pper into the copier 11 Close the front door 2 Color toner This message is displayed when the color toner is running low Identify the color of the toner and operate as follows 1 Open the machine s fro...

Page 33: ...igure 1 39 7 Tap on the top of the toner cartridge until all toner is moved to the hopper unit 8 Hold the toner cartridge and detach it slowly 9 Close the toner supply mouth cover and lock it IO Set t...

Page 34: ...h water then dry wipe it 2 Copyboard Cover Wipe it using mild detergent then dry wipe it Advise the user to clean the following if an image problem is noted j 3 Primary Corona Wire and Transfer Separa...

Page 35: ...lectrophotographic process see figure 2 i Copyboard _ _ i Lowe fixing Copypaper I Figure 2 1 Electrostatic Latent Image Formation Block _ flow of copy paper f rotation of drum Figure 2 2 CWVMGNT 0 199...

Page 36: ...Electrostatic Latent Image Formation Block This block consists of three steps through which the negative charges in the areas of the drum surface corresponding to the dark areas of the document are l...

Page 37: ...um surface to neutralize the charges in the light areas D Step 2 Primary Corona Exposure Figure 2 6 Primary corona exposure charges the drum surface to a uniform negative potential A bias is applied t...

Page 38: ...omes8vinually immobile because of its strong attraction to the blade The toner is then deposited on the cylinder in a thin even layer An AC bias and a DC bias negative component are simultaneously app...

Page 39: ...Step 6 Transfer Figure 2 12 A negative corona charge is applied to the back of the copy paper causing the toner on the drum to move to the copy paper Copy paper coming out of the fixing assembly is d...

Page 40: ...m the positive DC component of the separation corona output for the second side is made lower than that for the first side 2 6 COPVfllGtll 0 Ml CANONINC J Step 8 Fixing Cleaning belt Lower roller Figu...

Page 41: ...the drum surface in preparation for the next copy run ensuring reproduction of crisp images The toner scraped by the cleaning blade is moved to the front by the cleaning screw for collection inside t...

Page 42: ...in the corona assemblies C Static Eliminator The outlet from the delivery assembly is equipped with a static eliminator consisting of a grounded brush to remove the residual charges D Blank Exposure...

Page 43: ...ion The machine can be divided into four functional blocks i e pick up feederSystem exposure System image formation system and control system r_ __ __ _ ___ _ Figure 3 1 COPVRIGHTO 1991 CANON INC CANO...

Page 44: ...Cs on the DC controller are as follows ICS Q166 Q163 I O port Q159 gate array Outputs clock pulses to CPU Expands CPU ports Outputs clock pulses to lamp regulator HVT Q135 PC Handles communication wit...

Page 45: ...Master CPU Q166 Slave CPU Loads i3l3lk exposure1 Primary corona assembly Transfer Separation corona assembly Fixing bias Pre transfer corona assembly q i Fixing heater 0158 Figure 3 2 CDWR Xl 0 lsglCA...

Page 46: ...er sensor When PSI detects paper 1 5V When PS2 detects paper 1 5v When black developing assembly is engaged 1 I sensor _ PS5 Delivery assembly paper sensor When lens is at home position 1 12v When sca...

Page 47: ...05 t m z Right door open closed SenSOr When PS7 detects paper 0 When PS8 detects paper 0 When paper is present in cassette 1 1 When paper is present in cassette 2 1 When paper is present in manual fe...

Page 48: ...0 When wire cleaner is at home position 0 When wire cleaner is at rear 0 When wire cleaner is at home position 0 When wire cleaner is at rear 0 Reads cassette size 24 l Executes AE measurement sv Whe...

Page 49: ...ly Ji 04 85 4 B2 B4 OLED 1 DShZE2 h A 0LE 12v 24V 12v 24V 12v 24V 12v 24V Document size identification Q586 ATR 2 Color toner concentration sensor LA851 NP3050 only Control panel m Figure 3 5 CoPYRIGH...

Page 50: ...SSR Drum heater J78 1 J113 A6 _ 1oov others 2 A5 Fixing heater DSl Door switch Figure 6 3 8 COPVflGHl 0 1991 CANON INC DC controller _ 12v ov 24VR OVR 24Vu ovu 5v ov f 24V HMD When 0 LRD hopper motor...

Page 51: ...x L f 24V 1 I 35v J602 A9 J103 A3 FG See p 3 I 2 24V 2 J602 Bl J103 811 mP I J602 A3 Ji 03 89 A4 A8 A5 A7 A6 A6 A7 A5 A8 A4 See p 3 I 9 83 B9 84 88 85 87 B6 B6 Motor driver J77 1 __mb J104 Ai LNA A2...

Page 52: ...and 1 4 24V while PM5 is rotating Feeder fan clutch NP3050 only Registration roller clutch Vertical path roller clutch 1 Vertical path roller clutch 2 When I cleaner rotates forward When 1 cleaner ro...

Page 53: ...L4 goes ON DC controller When I SL3 goes ON Cassette pick up solenoid 2 m3 L When O SL6 goes ON Set back flapper solenoid NP3050 only Pre exposure lamp Blank exposure lamp See p 3 42 Black copy counte...

Page 54: ...main motor has a built in FG frequency generator circuit which generates clock pulses of a frequency suited to the revolution of the motor The main motor is controlled to rotate at a constant speed r...

Page 55: ...he main motor is applied is varied The fluctuation in the speed of the main motor is corrected c Protection Against Excessive Current Flow If excessive current flow occurs in the motor at time of MOTO...

Page 56: ...and thf selected reproduction ratio The soeed at whit the Scam e moves foward differs depending on selected reproduction ratio Waits until fixing roller heats Fixing beater is ON I Evens out tfv3 temp...

Page 57: ...ace Discharges the linal copy last rotation has moved past the delivery electrostatically paper sensor after SCRV until about 0 8 sy 3 passed STBY From when LSTR and Waits for the COPY START standby W...

Page 58: ...Focal distance 0 0 I REDUCE Oorn tens The reproduction ratio around the drum cir cumferential is varied by changing the relative speed of the forward movement of the scanner and the rotation speed of...

Page 59: ...fic number of pulses has been generated after the signal To move the lens to an ENLARGE position from REDUCE to DIRECT for example the motor first rotates in reverse moving the lens past the position...

Page 60: ...g in response to pukes applied to each phase in sequence A 5V voltage is ap ed to the lens motor when it is at rest to prevent displacement of the lens a Lens Motor at Rest The motor is stopped and th...

Page 61: ...o around the drum The speed of the reverse movement of the scanner is constant regardless of the selected reproduction ratio it is about three times that of the forward movement The position of the sc...

Page 62: ...scanner as follows 2 The scanner is reversed and moved in reverse when the signal plate has moved 70 mm after it left PS5 front rear Figure 3 18 3 The scanner is moved in reverse an additional 26 mm...

Page 63: ...ater the registration clutch goes ON This may be changed in the service mode Figure 3 21 c Identifying the Position for AE Scanning 1 The scanner is moved forward farther than the leading edge of the...

Page 64: ...3 Basic Sequence scanner Figure3 24 3 22 COPYRIGHTO 1991 CANONINC CANON NP3050 3030REV O AUG 1991 PRlNTEDINJAPAN IMPRIMEAUJAWN...

Page 65: ...ce over which the scanner moves from the leading edge of the document depends on the cassette size as in normal copying operations II The same as 1 however if the distance over which the scanner moves...

Page 66: ...n the copyboard cover is brought down the DC controller measures the outputs of the document sensor circuits and the measurements are used to identify the size of the document as being A3 84 A4 or B5...

Page 67: ...s constant regardless of the angle of the copyboard cover If no document is present over the sensor on the other hand the output of the sensor immedi ately after MS4 has gone ON is low when the copybo...

Page 68: ...ased on the combination of the states of document sensor signals DSIZEO through 2 0 0 1 A4R 1 1 0 A4 n 0 Document absent 1 Document present W B5R if none of the sensors detects document Table 3 2 3 26...

Page 69: ...wing functions Controls the intensity of the scanning lamp Controls the blank exposure lamp Controls the primary transfer corona current Controls the pre transfer separation corona current Controls th...

Page 70: ...mp I 5 Scanning lamp a Primaryflransfer corona v assembly 8 SeparationlPre transfer corona assembly Developing bias AC compo ent black Developing bias AC component color Developing bias DC component B...

Page 71: ...he scanning lamp which has the following functions 0 Turns the scanning lamp ON and OFF Controls the intensity of the scanning lamp Checks for faults in the scanning lamp Cl 68 PWOFF 1 1 I La k COPVR...

Page 72: ...igger pulses suited to the level of the LINT sig nal is sent to the triac Tl The AC power supply to the scanning lamp IS c Detecting Faults When the scanning lamp is ON it is moni tored by the lamp ON...

Page 73: ...lows in the AE mode The COPY START key is pressed __ The scanning lamp goes ON When the intensity of the scanning lamp has sta bilized the scanner moves forward to the AE position about 96 mm past the...

Page 74: ...hotodiode Q751 is sent to the DC controller as AEDATA 7 to 10 V The DC controller computes the optimum intensi based on the input value and sends the result to DC controller 3 32 AE sensor Light refle...

Page 75: ...causing the copy to be lighter W If the setting is decreased in the service mode the intensity during copying operation will decrease causing the copy to be darker effeffe in both AE and AE_SLOP Test...

Page 76: ...d in the service mode the 0 IuI intensity at copy density 6 or lower will be increased 9 _ If the setting is increased in the service mode the 0 COPY intensity at copy density 6 or lower will be 1 6 9...

Page 77: ...orona current Controls the grid bias of the primary corona assembly I the following functions DC controller High voltage transformer A bias identical to that applied to the grid wire is applied to the...

Page 78: ...se to maintain a specific current level If the corona current is greater than a specific level from the transfer corona assembly the varistors Di6 D17 go ON sending signals to the limiter circuit to c...

Page 79: ...e circuit has the following functions Turns the separationipre transfer corona cur rent ON and OFF Maintains the separation pre transfer corona current constant Varies the separation corona current r...

Page 80: ...igh voltage primary output the current is controlled to a constant level based on the level of the feedback signal from the transformer c Controlling the Separation Corona Current When two sided or ov...

Page 81: ...HVBDC bias control circuit 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 th...

Page 82: ...high voltage transformer 12 for the DC bias is driven and a DC bias is generated b Controlling the Voltage Level of the DC Bias The level of the DC bias is varied to suit the setting in the service mo...

Page 83: ...is decreasec in the service mode tht DC component of the developing bias during 1 5 9 black copying operation will be decreased causing COPY DENSITY the copy to be darker CORRECTION key lH Developing...

Page 84: ...re kept ON or OFF depending on the selected copy size and copy modes The two LEDs sharp cut each at both ends are controlled by a static method and kept ON while the drum is rotating All other LEDs ar...

Page 85: ...EDs in numbers suited to the cassette size are kept ON to eliminate charges on the portion of the drum not in contact with the copy paper When using a fixed reproduction ratio or when using a standard...

Page 86: ...Figure 3 41 To make a copy in which C E and G of the document shown in Figure 3 40 A are black and the remaining area in red using image conversion the overlay mode is used so that the document is ex...

Page 87: ...gears are used to transmit the drive The waste toner scraped by the cleaning blade is forwarded for collection inside the photo sensitive drum developing assembly lock clutch When the black developin...

Page 88: ...of the sensor to go I Ei AMP lnzz Piezoeletric oscillator Figure 3 45 2 5 set thereafter the hopper motor starts to rotate causing toner to move from the hopper assembly to the black developing assem...

Page 89: ...conds afier BTET i 0 The next copying run is started with BTET O the hopper motor starts to rotate b seconds after the copying run is started and when a b 60 set the hopper motor stops warning message...

Page 90: ...odiode Developing cylinder Figure 3 48 3 48 COPYMGHTO 1991 CA WCC The type color of the CD unit is identified basedSonthe state of the toner color signals sent by the color toner concentration sensor...

Page 91: ...e compared to measure the concentration of the toner This method enables detection of the toner concentration independent of the fluctuations in the lamp intensity As color toner is consumed the toner...

Page 92: ...r Toner with an optimum concentration is deposit ed on the developing cylinder il Starter _ The output voltage VA through VD by the reflected light assumes a level compatible with the optimum concentr...

Page 93: ...the cylinder assembly CTEPI output when a small amount of toner has been used copying resumes immedi ately after the supply operation CTEP2 output when a large amount of toner has been used since a la...

Page 94: ...gnal 1 for 2 set or more the copying operation is stopped for toner sup ply operation copying operation resumes when toner out signal goes OFF iii With output of the toner out signal for 60 set or mor...

Page 95: ...ondition will be identified as the absence of toner inside the CD unit and v i r resumed COPY 1 CTSR COPY COPY 1 CTSR Sm 4 Detection Toner out signal 1 Toner out signal 2 Color toner supplysolenoid SL...

Page 96: ...ansmission of drive When the inside of the photosensitive drum and the pipe becomes full of toner the rotation of the feedsdrew starts to drag pushing up the cou pling and cutting off the drive to the...

Page 97: ...me position sensor signal does not go 1 after 40 seconds or more the condition is identified as a cleaning fault and a warning message is indicated service mode 2 Cleaning the Primary Corona Wire auto...

Page 98: ...re of the transfer separation corona assembly Like that of the primary corona wire the cleaning motor the cleaner home position sensor and the cleaner rear sensor are used to drive and monitor the cle...

Page 99: ...up feeder system The set back roller and delivery roller 2 are driven independently by stepping motors and the rollers rotate in two directions M2 Main motor PM3 Delivery feeder motor PM4 Horizontal r...

Page 100: ...the passage of copy paper checked by photointerrupters PS9 PSIO Delivery eensor PS6 Preregistration sensor PS2 620 I Cassetl 1 pap sense PS9 Q I II Cassette 2 paper sensor PS10 _ 3 58 DC controller Fi...

Page 101: ...time decides when to reverse the scanner and how to control the blank exposure mechanism CST 3 6 right 0 1 0 No cassette 0 0 _ KPX257 0 0 U L2 203 220X31 7 354 0 0 A4 0 0 210X297 05R 0 1 257X1 62 84 0...

Page 102: ...1 or 2 Each of the rollers are rotated by drive transmit ted by the clutch and the solenoid Photosensitive drum 3 60 COPYRIGHT 1991 CANONINC I_ _ _ Cassette1 Vertical path Cassette 2 Figure 3 58 roll...

Page 103: ...or Vertical path roller 1 Pre registration paper sensor Varies depending on the size of paper Figure 3 59 3 Pick Up from Cassette 2 A4 2 copies COPYSTARTkey Loef t z Leadingedge ON of document Vertica...

Page 104: ...roller rotates as soon as the manual feed pick up sensor PSII detects copy paper Photosensitive drum Pre registration paper sensor PS2 anua feed pick up roller Figure 3 61 Copy paper inserted Leading...

Page 105: ...entity with gear B The rotation of gear C is used to move the registration roller sidewavs see Fiaure 3 63 to form an arch This is to correct variations in The edge of c y paper is detected by the pic...

Page 106: ...sor PSI II Detection may not occur depending on the position of the paper front rear Figure 3 64 a Initial Operation The registration roller is moved to the rear thereby butting the roller against the...

Page 107: ...Front Affer Setting Figure 3 68 Figure 3 66 c Home Operation The registration roller is returned to the home position If no paper is over the sensoi the registra tion roller is moved to the front and...

Page 108: ...the lower feeder assembly outlet roller and waits for copying on its second side to begin Forthe operation of the paper deflector plate see p 3 83 Copying on 1st Side 1 Delivery sensor paper deflecto...

Page 109: ...lay I COPY START key COPY START key Leading edge ON 15 side P j SCR I LSTR 1 SCRV LSTR j STBY I Lower feeder assembly outlet roller Figure 3 70 COPVRIGHTO 1941 CANONINC CANON NP3Q50i3030REV 0 AUG 1991...

Page 110: ...rwarding the copy paper to the lower feeder assembly The copy paper then moves ahead and stops after it has moved several millimeters past the lower feeder outlet roller to wait for copying on the sec...

Page 111: ...i OPERATION AND TlMlNGl Figure 3 72 2 Sequence of Operations 1 copy two sided Figure 3 73 COPYRIGHT 0 19 CANONINC CANONNP30501W REV 0 AUG 1991PRINTED INJAPAN IMPRIME AU JAFON 3 69...

Page 112: ...a mechanism in which sheets of copy paper are stacked up in the form of tiles in the lower feeder assembly there by eliminating double feeding within a limited space The separation flapper in the out...

Page 113: ...roller are driven by the main motor the set back roller on the other hand is driven by a special stepping motor PM5 The separation flapper is driven by a solenoid SL7 Figure 3 75 Lowerieederassembly...

Page 114: ...ller Figure 3 77 2 The teading edge of the paper butts against set back roller 1 and forms an arc Figure 3 78 3 The separation flapper lowers and at the same time set back rollers 1 and 2 rotate forwa...

Page 115: ...set back roller I Figure 3 80 5 The 2nd page is fed to the lower feeder assembly Figure 3 81 6 The 2nd page butts against set back roller 1 causing the leading edge of the paper to form an arc i r Set...

Page 116: ...outlet 0mm 8mm Figure 3 54 9 Operations from 5 to 8 are repeated for the specified copy count and sheets are stacked in the lower feeder assembly 10 When the specified number of sheets have been stack...

Page 117: ...the 1st page to stop in front of the lower feeder assembly outlet sensor and at the same time raising the separation flapper Set bacyollers 1 2 Lower feeder outlet sensor PS6 Figure 3 66 COPYRIGHT 19...

Page 118: ...is equipped with a flapper at the lower feeder assembly outlet to improve separa tion of stacked sheets COPY START key Leading edge ON 2nd side Leading edge of document of document D V INTR 1 I SCR I...

Page 119: ...1st page at the lower feeder outlet paper sensor the set back rollers and the lower feeder assembly outlet roller stop and the separation flapper lowers Lower feeder outlet paper sensor Figure3 89 3...

Page 120: ...time the separation flapper moves up Figure 3 91 5 After the preregistration paper sensor has gone ON the set back rollers and the lower feeder outlet roller rotate forward to feed the second sheet Pr...

Page 121: ...or THl cessor on the DC controller controls the state of the fixing heater drive signal HTRD 1 or 0 so that the surface of the upper roller will remain at a specific temperature during copying operati...

Page 122: ...ng assembly monitor circuit monitors the output of the thermistor and if the tem perature remains 230 for three seconds or more turns the main switch OFF A The fixing assembly monitor circuit monitors...

Page 123: ...he upper roller thereby eliminating toner offset to the paper the power comes from the high voltage power SUPPlY b If A4 A5 or LTR one cleaning session for each two sheets of paper picked up If A3 or...

Page 124: ...Related to Fixing Assembly POWER switch COPY STARTkey 170 17s Leadingedge Leadingedge ON 140 145 ON ofdocument ofdocument 3 82 Figure 3 94 COPYRffiHTO 19 CANONINC CANONNF3l50i3WOREV l AUG 1991 PRlNTE...

Page 125: ...comes from the stepping motor PM3 The drive of delivery roller 2 NP3030 comes from main motor M2 Figure 3 95a NP3050 Figure 3 95b NP3030 COPY paw Paper deflector Gear A Delivery roller 2 n j m 4PM3 Re...

Page 126: ...takes place as shown in Figure 3 97 COPY START key Leading edge ON of document V INTR 1 SCFW SCRV LSTR 1 STBY Delivery sensor PS6 Figure 3 97 3 84 COPVRIGHTO 1991CANON INC CANON NP305013WO REV 1 AUG 1...

Page 127: ...The machine stores the remaining number of copies to be made as well as the and copy mode so that the copy count or the copy mode need not be reset after removing jams by opening the machine s front d...

Page 128: ...igure 3 99 2 Delay Jam by Pre Reglstration Paper Sensor The paper does not reach the pre registration paper sensor PSZ within a specific period of time after the manual pick up roller has gone ON Copy...

Page 129: ...RT key ON Cassette 1 pick up Preregistration paper Figure 3 101 c Pick Up from Cassette 2 The paper does not reach the pre registration paper sensor PS2 within a specific period of time after the COPY...

Page 130: ...ly outlet paper sensor has gone ON COPY START key ON for 2nd side ON 3 88 I Set back roller Lower feeder assembly outlet roller Lower feeder assembly outlet paper sensor PS7 Pre registration paper sen...

Page 131: ...eck Figure 3 104 4 Stationary Jam by Delivery Sensor The paper does not move past the delivery sensor PS6 within a specific period of time after the delivery sensor has detected the paper COPY START k...

Page 132: ...let paper sensor PS7 i 4 Check 0 8 set m forward rotation sl reverse rotation Figure 3 106 b Overlay Copy The paper does not reach the lower feeder inlet paper sensor PS7 within a specific period of t...

Page 133: ...S7 after the lower feeder assembly inlet papei sensor PS7 has detected the leading edge of the paper COPY START key ON Paper enters the lower feeder assembly I Check p7J forward rotation m reverse rot...

Page 134: ...PlY 3 92 1 PWOFF I 24VR 24VU 12v 12v z Document size 24VR identification DC 24VR AE sensor controller 5v Black toner D identification 24V w Colortonerconcent rationidentification 3v NP3050 only LSAT _...

Page 135: ...a lithium battery BATIOI to back cut off up the SRAM Ql50 on the DC controller To reset the output open the front door keep The DC power supply for options provide the the door switch OFF disconnect t...

Page 136: ...ed resistor to send signals to the copier as necessary 2 Communication with the Copier The editor communicates with the copier in serial as shown in Figure 3 110 The editor is supplied with power by t...

Page 137: ...pacers are arranged over the Y plane shaped resistor and serve to prevent contact between the X plane shaped resistor and the Y plane shaped resistor when the table is free of pressure The editor cont...

Page 138: ...age sent to the negative side of the comparator increases Figure 3 115 Equalizing Circuit of Comparator The above causes output Vo of the compara tor to change from 1 to o enabling the micro processor...

Page 139: ...and SW4 are ON to read the Y coordinates as for Y coor dinates shmed Figure 3 117 Reading Y Coordinates DSOUT x plane shabed resistor y plane shaped resistor Figure 3 118 Tablet and Editor Controller...

Page 140: ...r by the copier and its controller PCB converts the 24V power to 12V power The copier sends signals to the controller inside the cassette pedestal at such times as programmed in advance In response to...

Page 141: ...4 5 6 i77 62 B12 C4PD when paper is present in cassette 4 1 Cassette 3 size sensor J582 Al All A2 _A 2 DIGIT 2 A3 _Ag DIGIT3 A4 _A8 SIZE3 A5 _A7 SIZE A6 SIZE1 A6 SIZE0 cassette 314 size check Cassett...

Page 142: ...7 B8 DC controller copier J582 84 1 3 Power supply DC power supply copier J Cassette feeding unit controller 88 B7 _ Figure 3 121 PUSW when O pick up clutch solenoid 3 goes ON PUSU when O pick up clut...

Page 143: ...aper fed to the copier is forwarded to the registration roller by vertical path roller 2 and vertical roller I Jams of paper from the cassette feeding unit are checked by the copiers preregistration s...

Page 144: ...assette 4 I_ 0 Pick up clutch 3 drive signal B Pick up clutch 4 drive signal I Deck motor drive signal Pre registration paper sensor signal Cassette feeding unit Ve i c l path Vertical path roller 3 V...

Page 145: ...holder pick up solenoid Z St page picksd p 2nd p e picked up ____ _ L_ ceding unit SL581 i 1 Vertical path roller 3 drive clutch CL581 Figure3 123 b Pick up from cassette 4 A4 2 copies Leading edge L...

Page 146: ...s not reach the pre registration paper sensor within a specific period of time after vertical path roller 1 has gone ON 3 104 COPY START key V 1 PKUPR 1SCFW 1 Check If from cassette 3 2 95 set if from...

Page 147: ...de the deck The copier sends signals to the deck control PCB as programmed in advance The control PCB inside the deck on the other hand sends signals to such loads as motors and clutches inside the de...

Page 148: ...J557 1 LDR 2 J555 7 A 8 747h 24V 956 l 1 I 24 I Jlli J555 6 6 10 Bii 9 Bi 7 B7 PEP3 when paper is detected inside deck 0 PDP when paper reaches sensor 1 LTP when I pick up operation ready DKMD when 0...

Page 149: ...ower supply copier Jill i 4 S6 when 0 pick up clutch goes ON 5 810 PURL when 0 pick up roller up down solenoid goes ON 6 M DRGoR when 0 deck registratbn roller goes ON Paper size input I DC controller...

Page 150: ...hes The clutches in turn are under control of the signals from the copier When paper is picked up the pick up roller is raised by the pick up roller release solenoid SLSOI Copier RegFtrati n roller I...

Page 151: ...edge ofdocument Leading edge of document Deck motor M501 Deck pi up clulch CL502 IPick uproller 1 _ 1 I I Paper deck SBsolem 501 I AI I I I Copier Figure 3 130 COPVw HT 0 1991 CANONINC CbNON NPSW 309...

Page 152: ...ignal LOCK 1 is senl a559 goes ON a557 goes ON 4 Lifter positio signal LTP goes 1 Paper deck controller Lifter clutch CL501 Lifter Dosilion sensor Ii cl554 24v 3 a564 a557 3 24v Figure 3 131 LOdK 0 __...

Page 153: ...sensor arm moves away from the lifter position sensor 0503 In turn the lifter position detection signal 0 is generated to raise the lifter by about Zmm 2 Stopping the Lifter normal emergency Should t...

Page 154: ...up clutch CL502 Pick up roller I I release solenoid SL501 i i 0 8set OBsec Check Figure 3 132 b Delay Jam at Copier Pre registration Sensor The paper does not reach the copier pre registration sensor...

Page 155: ...ter position sensor Q755 Left lifter position sensor Q756 Deck preregistration roller i MS MS701 Right lifter limit sensor Microswitch MS702 Left lifter limit sensor MS703 Right door open closed senso...

Page 156: ...E when side door is open 0 DKMD when 0 deck motor rotates LPPDE when paper is present in left feeder assembly l LPUDR when I left pick up clutch goes ON RPUDR when o right pick up clutch goes ON LPURL...

Page 157: ...RIMEAUJAPON r 7 6 1 5 6 k 7 3 4 t 5 9 3 1 24V 24V I 12v i T_ J I J i i _ Deck controller 702 A3 Jil Al 702 A7 A10 A2 66 69 87 86 84 83 Figure 3 136 PDR en 0 left feeder e clutch goes ON i 65 LPI whm d...

Page 158: ...drive clutch 3 116 1 24V when left lifter is at limit 0 LDDE when left deck is closed 1 when right lifter is at pick up position 1 light blocking plate at sensor when right lifter is at limit 0 when...

Page 159: ...which otherwise would be longer when paper is picked up from the left rl__ The motor handles pick up operations and drives the left and right lifters and other loads The left feeder assembly found be...

Page 160: ...n 3 118 Left pick up roller y E s 0 Od 0 Left separation I Paper roller Paper I roller Right feeder roller _ Right separation Left deck Right deck Figure 3 139 Parts of Deck COPYRIGHT 0 1991 CANON INC...

Page 161: ...er the copiers DC controller PCB generates the deck motor drive signal m causing the deck motor to rotate at the same time the right pick up roller starts to rotate to pick up paper from the right dec...

Page 162: ...t the same time the left pick up roller starts to rotate picking up paper from the left deck Deck registration roller To vertical path Left feeder assemblv oaoer sensor Deck pre registration assemb y...

Page 163: ...nce pick up even after it is switched OFF therefore the presence of paper in the left feeder assembly will not be identified as a stationary jam r i Deck controller II Dr ivebelt If for some reason th...

Page 164: ...ge ofdocument Figure 3 143 b Sequence of Pick Up A4 2 copies from left deck COPY START COPY START Leading edge LeadIng edge Paper ISabsent in the left feeder assembly when the COPY START key is presse...

Page 165: ...he grip of the deck is pulled When the latch on the grip comes off the cam on the edge of the roller release shaft the arm on the roller release shaft rises and the pick up roller in turn is raised On...

Page 166: ...force of the release spring The separation roller is designed to be released so as to prevent interference between the deck rear plate and the separation roller when the deck is slid out Feeder roller...

Page 167: ...the lifter When the lifter has moved up and reached the lifter up sensor Q751 Q752 the lifter clutch goes OFF The lifter then is kept up by the one way gear The lifter is moved up as long as the copi...

Page 168: ...ller 1 LetVright litter Left right lifter limit sense MS701 MS702 Oil damper 3 126 Figure 3 149 Parts Used to Move Up the Lifter COPYRIGHT 1491 CANON INC CANON NPWXGO REV 0 AUG 1991 PRINTED INJAPAN IM...

Page 169: ...nce of paper If paper is absent the sensor arm will move absence of paper If the lifter fails to move up to a specific position for some reason even in the presence of paper the condition will be iden...

Page 170: ...g edge of document b Delay Jam at Copier Pre Registration Roller The paper does not reach the copier pre registration paper sensor within a specific period of time after the deck registration clutch h...

Page 171: ...paper advance pick up does not reach the deck pre registration paper sensor within a specific time after the pick up clutch has gone ON COPY START key _ AT Left pick up clutch CL702 Paper deck Left pi...

Page 172: ...er Table 3 7 If NP3030 such items as overlay two sided copying and CD unit are displayed But input is not accepted 3 130 0 Servicei mode switch Figure 3 156 3 Enter the number of the mode to check or...

Page 173: ...s and switches Figure 3 157 depicts the label attached behind the machine s front door Each machine is individually adjusted at the factory and settings are recorded on the label Enter these settings...

Page 174: ...gnosis code RDF self diagnosis code sorter self diagnosis code copier s alarm displays 0 through FF See Table 3 8 See Table 3 9 See Tabie 3 10 do10 doll S ERR B_ALRM See Table 3 11 I 1 d012 F_ALRM RDF...

Page 175: ...master CPU message Danish 1060 copier master CPU message Dutch 1070 copier master CPU message Finnish 1080 copier master CPU message Italian 1090 copier master CPU message Norwegian 1OAO copier master...

Page 176: ...IWT by 1 delay jam ldentlfled by delwery sensor PS6 stationary jam identilied by delivery sensor tified by lower feeder inlet 3 134 Table 3 8 Copier Jam Codes COPVAffiHT0 1991 CANONINC CANON NFW50flWO...

Page 177: ...JAPAN IMPRIME AUJAPON 3 135 Jam code Description 81 RDF identified as open 82 pick up tray of upper cover identified as open 83 delivered document not identified by document sensor document circulatio...

Page 178: ...de qQm until execution automatic cleaning in response to power o will not be performed Table 3 11 Copier s Alarm Alarm code Description _ document count different after jam removal I I 13 document for...

Page 179: ...ame of mode Name of display 1 I 110 V40 PPIO_PAO PO00 00000000 I t t t Screen No bit 7 bit 0 portPA1 input output port PB2 input output PO14 1 V4OPPIl_PCl 1 portPC1 input output I O port IC 363 port P...

Page 180: ...LAVE F PO32 v40 OP_IU reserved n For details see the pages that follow port PD input output port PF input output Remal I 3 138 COPVMGHT 0 1991 CANON NIC CANON NP3050flWO REV 1 OCT 1991 PAINTED INJAPAN...

Page 181: ...upsolenoid SL581 drive signal PUSLB right deck paper pick up release solenoid RPURL SL701 drive signal deke paper pick up clutch CL502 drive signal PURD 3 cassette 4 pick up solenoid SL562 drive PUSL4...

Page 182: ...tion sensor MS6 signal developing AC bias output signal black developing assembly lock solenoid registration roller clutch CL2 drive signal COPYRIGHT 0 1991CANON INC CANON NPW3WO REV 0 AUG 1991PRINTED...

Page 183: ...e regls ratlon paper sensor COPVRIGHTO 1991 CANON INC CANON NP305Ql3030REV 0 AUG 1991 PRINTED INJAPAN IMPAIME AU JAPON 3 141...

Page 184: ...6 reserved 7 reserved 3 142 COPVAIGHTO 1991 CANONINC CANON NF3O O 3WORE O AUG 1991 PRlNTEDINJAPAN IHPRIMEAUJAPON...

Page 185: ...1 COPVAlGHT 1991 CANON INC CANON NP305013030REV 0 AUG 1991 PRINTED IN JAPAN IMPRIME AU JAWN 3 143...

Page 186: ...lOPERATION AND TIMING 3 144 COPYRIGHT 0 1991 CANON INC...

Page 187: ...PO18 PO19 PO20 COPVAIGHTO 18i CANONINC CANONNP305013030 REM AUG 1991 PRlNTEDINJAPAN IWPRIMEAUJ ON 3 145...

Page 188: ..._ 3 146 COPYRIGHT 0 1991 CANON INC CANON NP9050flWO REV 1 AUG 1991 PRINTED INJAMN IMPRIME AU JAWN...

Page 189: ...e sensor switch 0 1 switch ON 1 cassette 2 size sensor switch 1 1 switch ON 2 cassette 2 size sensor switch 2 1 switch ON _ 3 cassette 2 sue sensor switch 3 1 switch ON 4 I ze sensor switch 1 COPVRIGH...

Page 190: ...sianal LHP J103 812 1 at HP 7 scanner oosition sensor fPM5 sianal l PD 1 J102 B5 11 atHP I 0 lens motor PM2 power supply switching LNSTB Ji 04 A6 0 5V 1 24V signal J104 A3 1 side registration motor PS...

Page 191: ...COPVRlGtiT 1991 CANOWNC CANON NP305013WOREV 0 AUG 1991 PRINTED IN JAPAN IMPRIME AU JAPON 3 149...

Page 192: ...r higher A006 BIAS 9 developing bias DC component black copy A007 BIAS C developing bias DC component color copy Range Remarks 0 to999 0 to999 0 to999 0 to999 0 to999 0 to999 0 to999 when decreased co...

Page 193: ...e DC component color set the relative difference in re spect of BIAS C red center A017 DOG STOP document stop position with RDF in use 0 to 999 see next page COPVMtlT0 1991CANON WC CANON NP3050flWO RE...

Page 194: ...e mode 1 Select A017 DOC STOP fafn er the value shown as stored sheet the sheet WIIIstop on the iiyF y stored data YES A higher setting causes the stop position to move to the left in units of 0 33mm...

Page 195: ...the H key to start operations be sure to execute each item during standby only Name of mode Name of function _j t t t Screen No 1 during operation Operation operation of the set remains ON for 30 set...

Page 196: ...r toner solenoid remains ON supply solenoid for 0 5 set FO13 SEP_SL checks the operation of the separation solenoid remains ON for flapper solenoid 0 5 sec FO14 through not used FO30 FO31 TONER S blac...

Page 197: ...ssette see the next page for the settmg Screen No Item us1 sets the standard 1 AE enabled modes 0 AE disabled will be assumed to assumed to represent AE_SLCT CST_SLCT c AUTO_CAS z or auto cassette cha...

Page 198: ...e normal g step notation for the copy density may be expressed in all numerals except 0 will be assumed 17 step notation 0 g step 1 17 steo to represent 1 0 warm up ends when fixing temperature is 145...

Page 199: ...fter returns to 000000 coo2 coo3 coo4 coo5 BLUE GREEN BROWN WEB COO6 MANUAL coo7 CST_I COO6 CST_2 coo9 CST_3 co10 CST_4 blue copy counter reading green copy counter reading brown copy counter reading...

Page 200: ...er it has reached 100 C The output of THl does not reaches 175 C after it has reached 170 C The output of THl drops to 150 C or less after it has reached 175 C see notes i and ii A short circuit is de...

Page 201: ...S3 1 Checks are made immediately before the counter goes ON or OFF normal if the counter drive signal is 0 when the counter goes ON or if the counter drive signal is 1 when the counter goes OFF The sc...

Page 202: ...ock sensor faulty Delivery motor faulty rotation Delivery motor clock sensor faulty Document sensor faulty Registration paper sensor faulty t the lamp ON timing LAON i is not true t the lamp OFF timin...

Page 203: ...Stacker motor faulty 1 1 3 1 Guide vibrator motor faulty Stapler unit drive motor faulty Vibrator unit drive motor faulty Shift motor faulty rotation slow DC controller faulty The IPC cannot be initia...

Page 204: ...t delay 1 iii When the machine is switched OFF and then ON in responSelo an error in the 400 s self diagnosi will be executed once again and the message Feeder at PaLIlt will be indicated copie may st...

Page 205: ...editor controller open circuit disconnection Plain shaped resistor short circuit more than specific pressure is at power on _ 4 1 ooo Datacommunication error 3 at all times communi cation absent 200 m...

Page 206: ...e 1 Upper Cover 1 Detach the copyboard cover 2 Detach the control panel see p 4 3 3 Detach the rear cover 4 Remove the two mounting screws and detach the copyboard glass retainer 5 Detach the copyboar...

Page 207: ...ure 4 102 COPYRIGHT 1991 CANON INC 3 Right Cover 1 Remove the seven screws and detach the right cover Figure 4 103 4 Rear Cover 1 Loosen the two screws that hold the base plate until they are about to...

Page 208: ...h it After replacement push down on the copyboard sheet to ensure good adhesion 1 Outline The machine is equipped with three fan motors to prevent overheating by circulating the air inside the machine...

Page 209: ...Figure4 107 4 4 CGPVRlGtlTO 1991 CANON INC CANON NP305013030REV 1 AUG 1991 PAlMED IN JAPAid IMPRIME AU JAPON 4 Detach the protection cover then remove the four mounting screws and detach the scanner c...

Page 210: ...r Fan FM3 I Ozone Filter I For detachment of the ozone filter see Other Drive Assemblies for the feeder fan see I Detaching the Feeder Assembly I COPvRlGnT 0 1991 CANUN Hc CANON NPWOflWO RFv 1 OCT 1Wl...

Page 211: ...tay 2 Disassembly and Assembly a Detaching the Lens Motor 1 Detach the upper cover rear cover and copyboard cover switch mount 2 Remove the six screws and detach the harness retainer 0 Harness retaine...

Page 212: ...or unit together with the rail I 10 Remove the three mounting screws and I detach the lens motor I 0 Lens motor 0 Screws Figure 4 203 t _ COPVtllGtlTO 1991 CANON INC CANON HP305013030REM AUG 1991 PRIN...

Page 213: ...he lens drive slide the pulley to the direction of A and fix it cable in the order given in Figure 4 204 in place when the reading of the gauge is between400and450g Note _ y Wind the cable four times...

Page 214: ...the Tension of the Mirror cable 6 Adjust the position of the mirror see Adjusting the Position of the Mirror 2 Adjusting the Tension of the Mirror To adjust the tension of the mirror drive cable loose...

Page 215: ...er on the copyboard and feed the original sheet in the manual mode call the original sheet sheet B When the original sheet has gone through the machine it shows contraction by heat 4 Put sheerA and sh...

Page 216: ...rs and detach the motor driver 3 Move the harness guide upward to detach 0 Motor driver unit Harness guide Figure 4 209 4 Remove the grip stop ring and detach the three main motor gears and the three...

Page 217: ...ssembly IHarness retainer Figure 4 212 2 Detaching the Manual Feed Pick Up Drive Assembly 1 Detach the rear cover 2 Remove the screw and disconnect the connector then detach the manual feed pick up so...

Page 218: ...the grip ring then detach the registration roller clutch CLI 0 Connector Grip ring 0 CL1 Figure 4 216 F Other Drive Assemblies 1 Detaching the Set Back Roller Drive Motor Fixing Drive Assembly and Cl...

Page 219: ...e screws indicated 0 Set back roller drive motor 2 screws 8 Fixing drive assembly 2 screws Cleaning belt drive solenoid 2 screws Figure 4 218 4 14 COPVRIGNIO 1801 CANON MC CANON HP305013030 REV 0 AUG...

Page 220: ...ch bushings 1 and 2 remove the E ring and detach bushing 3 then remove the varistor mounting screw and disconnect the connector 0 Bushing 1 Varistor mounting 0 Bushing 2 screw 0 Bushing 3 0 Connector...

Page 221: ...Rubber member pick up roller 0 Pick up roller mount Figure 4 305 4 Position of Pick Up Roller Make sure that the pick up roller is attached to the pick up roller shaft as shown in Figure 4 306 front P...

Page 222: ...2 0 Mounting screws Q Pick up guides 1 and 2 Figure 4307 4 Detach the rear cover 5 Remove the hex screw and detach the drive clutch 0 Hex screws Drive clutches Figure 4 309 6 Remove the E ring from bo...

Page 223: ...ing screw 0 Bushing 1 E ring Figure 4 310 5 Remove the screw and detach the tab and bushing 2 then detach the transfer guide 0 Tab C Bushing 2 0 Mounting screw Transfer guide Figure 4 311 4 18 COPYRIG...

Page 224: ...the cords into the inside of the machine Q Grounding cord Figure 4 314 7 Remove the grip ring 8 Detach the gear 0 Grip ring Gear Figure 4 315 0 E ring 0 Bushing Figure 4 316 IO Detach the feeder knob...

Page 225: ...ing of the wire cleaner shaft then detach the shaft 0 Microswitch 0 Bushing Q Wire cleaner shaft Figure 4 319 5 Remove the screw and detach the corona assembly electrode 6 Remove the four screws and d...

Page 226: ...Remove the E ring and detach the shaft two shafts in all IO Remove the four screws and detach the feeder fan 0 Feeder fan 0 Screws Figure 4 322 COPYRIGHT 0 1991 CANON INC CANON NP3MOIJO30 REV 0 AUG 19...

Page 227: ...w and detach the bushing of the lower feeder assembly outlet then move the outlet to the right 0 Screw Q Busing Figure 4 324 4 22 COPYRIGHT 0 1991 CANON INC 6 Remove the E ring and the bushing at the...

Page 228: ...n the fixing screw on the solenoid 2 Put a washer 1 Omm thick under the separation flapper Separation flapper normal 3 Push the solenoid shaft into its housing with a finger and move the solenoid in t...

Page 229: ...I Grip ring roller shaft 0 Gear Figure 4 331 7 Remove the E ring and pull out the bushing 0 E ring 0 Bushing Figure 4 332 8 Open the delivery assembly and detach the connector cover 9 Detach the deliv...

Page 230: ...ry assembly and remove the screw and the grounding wire 4 Remove the screw and detach the connector cover 0 Grounding wire 0 Connector cover Mounting screws Figure 4 335 a J65 J67 Figure 4 336 6 Detac...

Page 231: ...s and detach the lower insulation cover separation claw 0 Screws Q Insulation cover 0 Screws 0 Lower separation claw Figure 4 338 Figure 4 340 4 Remove the three screws and detach the upper separation...

Page 232: ...cover 0 Rear cover Mounting screws Figure 4 341 2 Detach the m or mount 3 Detach the cord guide 0 Motor mount 3 Cord guide Figure 4 342 0 Pick up drive unit Figure 4 343 5 Remove the screw from the so...

Page 233: ...cover 0 Mounting screws Figure 4 345 7 Remove the E ring detach the bushing and pi up roller 3 0 E ring 0 Bushing 4 28 Figure 4 346 0 Pick up roller 2 Screw Figure 4 347 0 Pick up roller shaft Sensor...

Page 234: ...oller 4 1 Detach the rear cover of the cassette feeding unit 2 Disconnect the 2P connector Figure 4 350 loosen the screw and detach the clutch 01Screw 0 Clutch 0 2P connector Figure4 350 3 Remove the...

Page 235: ...ring a Bushing Figure 4353 4 Vertical Path Roller 3 1 Disconnect the connector and detach the copier from the cassette pedestal then lift the copier off the feeding unit 2 Detach the rear cover 0 Rear...

Page 236: ...s Figure 4 356 6 Remove the six mounting screws and detach the pick up unit from the feeding unit 0 Mounting screws 0 Pick up unit Figure 4 357 0 Pick up unit Figure 4 356 7 Loosen the screw and disco...

Page 237: ...360 9 Remove the E ring and detach the bushing found at the front of the pick up unit then detach vertical path roller 3 0 E ring Q Bushing Vertical path roller 3 Figure 4 361 4 32 CGPVRlGtlVO 1991 C...

Page 238: ...emove the deck stop plate 3 Remove the cord cover 0 Stop ring 0 Feed roller Figure 4 365 Npte I o I The feed roll l z its own orientzition pi it sb that ii is as shy i Figu e 4 366 i l IO s 0 Deck sto...

Page 239: ...3 Pick Up Unit 1 Lift the copier off the paper deck and remove the deck 2 Remove the side covers front rear 0 Side cover front 0 Mounting screws 0 Side cover rear Figure 4 366 3 Remove the four mount...

Page 240: ...ure 4 371 4 Registration Roller 1 Remove the deck drive unit 2 Remove the crossmember n fy zJJj kKr 0 Crossmember 3 Screw Figure 4 372 3 Remove the spring and the E ring 0 I 0 Spring B E ring Figure 4...

Page 241: ...nd detach the deck front cover 3 Remove the five screws and detach the front upper stay and the gear cover 0 Front upper stay 0 Gear cover Figure 4 376 4 Remove the screw and detach the damper Figure4...

Page 242: ...ble Pulley Screws Figure 4 379 4 Detaching the Deck Registration Roller 1 Detach the right pick up unit see the steps given for detachment of the right pick up unit 2 Remove the four screws that hold...

Page 243: ...ck 6 Detaching the Right Pick Up Unit 1 Detach the right deck from the paper deck 2 Detach the left deck from the paper deck 3 Detach the left feeder assembly 4 38 COPVAlGHTO 1991 CANONINC 4 Detach th...

Page 244: ...Remove the three screws and detach the rear support plate and the left feeder shaft support plate 0 Rear support plate 0 Screws 0 Left feeder shaft support plate Figure 4 388 8 Remove the screw and d...

Page 245: ...Open the right door 2 Remove the two E rings 0 Right pick up unit 0 Stop plate 3 Screw Suppont mount Figure 4 390 0 Right pick up unit Figure 4 391 C E rings 0 Separation roller Figure 4 392 3 Detach...

Page 246: ...retainer spring Figure 4 395 4 Detach the left separation roller together with the shaft 9 Detaching the Right Feeder roller 1 Detach the right deck from the paper deck 2 Remove the E ring 3 Slide ou...

Page 247: ...the rear cover then detach the left deck from the paper deck 2 Disconnect J707 and J708 from the deck controller 0 J707 OJ708 Figure 4 3100 3 Remove the two screws and detach the left feeder shaft sup...

Page 248: ...0 E ring a Left feeder roller Figure 4 3103 0 Figure 4 31b4 13 Detaching the Left Pick Up Roller 1 Detach the left deck from the paper deck 2 Detach the pick up rollers as necessary from the collar 0...

Page 249: ...t plate Be careful not to bend reflectors 7 a __ 0 Hole magnet plate Figure 4 400 4 Remove the two mounting screws and detach the thermal fuse 4 44 2 Detaching the Scanning Lamp 1 Detachthe copyboardg...

Page 250: ...__ I Boss of lamp a Reflector B Reflector A Lower reflector Mirror movement forward Figure 4 403 COPVRIGHTO 1491 CANON INC CANON NP3tWtttO REV 0 AUG 1991 PRINTED INJAPAN IHPAIME AU JAPON 4 45...

Page 251: ...ew and detach the blank exposure lamp retaining spring 0 Retaining spring CZ Screw Figure 4 404 4 Detach the chain from the tension gear 5 Disconnect J553 and pull out the blank exposure lamp 0 J553 B...

Page 252: ...r V CHARGING SYSTEM A Drum Unit 1 Outline Primary corona assembly Photosensitive drum COWGHTO 1991 CANON INC Figure 4 500 CANON NP305013030REV 0 AUG 1991 PRINTED IN JAPAN IMPRIME AU JAPON 4 47...

Page 253: ...attached to the dium unit 1 I f 1 I 3 Detaching the Drum Cleaning Assembly 1 Detach the drum unit 2 Detach the primary corona assembly 3 Remove the two screws and detach the drum unit front cover 0 Pr...

Page 254: ...nsitive drum When the inside of the photosensitive drum becomes full of waste toner the DISPOSE OF TONER message is indicated on the message display during copying operation Replace the drum unit when...

Page 255: ...the corona wire is routed through the p s Make copies and check the ima quality after attaching ihedrum unit _ _ 4 50 coPYRKinro 1991 CAmNC CAtKN til 3 i3Wt1 REV2 OCT 118FfNEDlW JAFN INPRIME AU JAm c...

Page 256: ...ter 7 Pick the end of the corona wire tension spring using tweezers and hook it on the corona electrode Transfer I separation corona assembly Height adjusting roll EI correct wrong i I _l pire correct...

Page 257: ...with a loop to 1 mm or less using a cutter 4 Hook the loop on the stud shown in Figure 4 509 and route the wire in the order given n After 16 runs 5 Wind the end of the corona wire around the fixing i...

Page 258: ...re 4 510 are standard values refer to the label attached on the drum cartridge for individual machines i e use the values recorded on the label Pre Transfer Corona Assembly and Separation Corona Assem...

Page 259: ...unit 3 Push the bushing to the rear and detach the separation claw assembly Separation claw Figure 4 511 0 Bushing Figure 4 512 8 e 3 Y 3 I fakedare so that the tip of the separation 5 5 I claw will p...

Page 260: ...k developing assembly to the front with care then hold the bottom of the assembly and detach it Notei I _ _x I Dolhbthold the developing sembly as if to hoid the developktg cylinder from its bbth e E...

Page 261: ...tach the blade together with the mount 0 Non magnetic screws 0 Blade Figure 4 604 7 Remove the self tapping screw and detach the electrode mount 4 56 coPvmGtll0 1981 CANON MC Electrode mount CjYI Deve...

Page 262: ...he ball bearing together with the electrode plate at the rear Figure4 606 13 Remove the self tapping screw and detach the electrode plate rear together with the ball bearing 0 Ball bearing a Electrode...

Page 263: ...he scraper vii Takecare pot to trap side al 2qnder the scraper _ Fs j s n 6 Push the blade lightly against the developing cylinder and lighten the screws in the order given in figure 4 610 Note I Viii...

Page 264: ...urvature of the container Figure 4 613 and the end of ttie container Figure 4 614 2 Keep the edge of side seal 2 a length of 1 mm away from the top face of seal 1 shown in Figure 4 613 and attach it f...

Page 265: ...of the fixing assembly A clockwise turn of the pressure adjusting screw moves the lower roller into the direction of the arrow thereby increasing the roller pressure 2 Detaching the Fixing Assembly 1...

Page 266: ...detach the fixing cleaning assembly 0 Screws 0 Fixing cleaning assembly Figure 4 705 3 Remove the screws 1 pc each and detach the four harness retainers then detach the tiewrap 4 Pull out the two fast...

Page 267: ...the front and detach bearing together with the insulation bushing Note 3 _ I Handk ihe inet i bushingwith care it fra _ I li _ 0 C ring 0 Bearing 0 Insulation bushing Figure 4 708 10 Remove the C ring...

Page 268: ...10 13 Lifl the lower roller off the bearing to detach 4 Attaching the Heater Donot touch the surface of the heater with bare hands Attach it so that the connector is at the rear or the print of the ma...

Page 269: ...e leading edge of the copy paper comes out to the copy tray and open the front door 3 Wait 15 set and the fixing assembly knob clock hliseslightly them turn the knob further to remove the paper 4 Meas...

Page 270: ...ller with a cleaning beIt impregnated with silicone oil The cleaning belt is 15 m in length a red band is printed on the belt 2 5 m fr m its end 2 Disassembly and Assembly a Detaching the Cleaning Bel...

Page 271: ...check to make sure that the section in contact with the roller is moist with oil Take up direction wind the be t on _ until a red band Belt take up shaft Figure 4 715 Note Make sure thqt the cteaiing...

Page 272: ...t have a transparent side so that the face side of the DC controller can be seen through the bag Be sure lo make adjustments and enter settings in the service mode and re enter the user mode settings...

Page 273: ...or ammonium gas avoid direct sunlight and install curtains if necessary Exposure to direct sunlight can disrupt the auto paper selection and auto reproduction selection mechanisms n Make sure that th...

Page 274: ...owing are set in the main body Cassette The size or number varies by specification 2 Open the shipping box and take out the parts and accessories Check that all of the following are available Drum uni...

Page 275: ...INSTALLATION i I I COPVRKiHl 0 WI CANON itiC CANON NP3DSDflWO REV2 OCT 1991 PRINTED IN JAMN IMPRIME AU JAWN 5 3...

Page 276: ...sers option mode in the e wfl lR 6 Resize the cassette as desired by the user See the ihstructions in RE SIZING THE then set paper and set the cassette in the CASETTE coprer Check that the ADD PAPER m...

Page 277: ...external covers are free of scratches and deformations 7 Clean the site of installation 0 Move the machine to the site 9 Fill out the Service Sheet Make sure that there is no abnormal noise Black cop...

Page 278: ...Keeo the CD unit in a box 3 Attach the dummy drum 4 Tape the corona assemblies feeder assembly release lever and lower feeder assembly release lever in place to protect against vibration 5 Tape the fr...

Page 279: ...screws from the left cover 0 Screws Two screws will not be used Figure 5 3 2 Attach the document trajl I Document tray 0 Mounting screws accessories Figure 5 4 COPVAIGHTO 1991 CANON INC CANON NPW3WO R...

Page 280: ...Korean 265mm xl90mm K 10 4 X7 5 84 257mm X364mm 84 1o i x14 3 Legal 216mm X356mm LGL 8 5W14 0 85 257mm X 182mm 85 ette bottom Figure 5 5 Bottom of Cassette 2 Relocate the rear guide plate in reference...

Page 281: ...m of the cassette 3 Detach the side stop plates from both cas settes the side stop plate Figure 5 7 4 Remove the screws that hold the partition plate Figure 5 8 5 Slide the partition plate to suit the...

Page 282: ...t the partition plate against the slide stop plate and fix it in place using a screw Figure 5 10 6 Attach the side stop plate back in its original position 9 Set the cassette size tabs as shown in Tab...

Page 283: ...r plate and Blanking plate Korean Ledger R 05R 0 Table 5 3 COPYRIGHT 1W CANON INC CANON NP305013030AEW AUG 1881 PRINTED INJAPAN IMPRIME AU JAPON Figure 5 11 Top View Cassette 11 Attach the size label...

Page 284: ...NMENT LTR R FOOLSCAP FOLIO AUSTRALIAN FOOLSCAP KOREAN R ECUADORAN OFICIO BOLIVIAN OFICIO 5 12 COPVRIGHTO 1991 CANON INC 1 Remove the two rubber stops from the lifting plate Figure 5 12 2 Detach the li...

Page 285: ...g plate n Figure 5 15 body Detaching the Pick Up Roller If the cassette has been modified to accom modate Government Letter Korean Government or Korean Government R detach the pick up rollers shown be...

Page 286: ...ace the transparent sheet over the opening in control panel a Transparent sheet Figure 5 19 8 Fix Control Card V on the control panel using four mounting screws At the time insert a card into Control...

Page 287: ...hine side INSTALLATION I 0 Shorting connector 4P connector Figure 5 23 12 Attach the control panel to the machine 13 Detach the protective sheet from the control panel label of Control Card V 14 Attac...

Page 288: ...it 1 Open the machine s front door and insert the door switch actuator into the door switch assembly then switch the machine ON n Skip steps 2 through 4 if the unit will be used for red 2 Remove the t...

Page 289: ...imes 8 Turn the supply mouth of the starter container counterclockwise to remove Figure 5 29 9 Detach the seal of the starter container Figure 5 30 10 Attach the supply mouth to the starter con tainer...

Page 290: ...Figure 5 33 Figure 5 34 17 Push the machine s service mode switch using a hexagon key or the like The machine enters the service mode and indicates on the message display 18 Press S 4 and then S The m...

Page 291: ...ark comes into view while holding the car tridge 29 Tap on the top of the cartridge lightly 30 Hold the tab on the cartridge and detach the cartridge while holding the CD unit 31 Close the toner suppl...

Page 292: ...Arrange the replacement so that it coincides with a scheduled visit as of Sept 1991 No Park name Parts No o ty Life copies Remarks 1 Corona wire primaiy pre transfer transfer separation FY3 0030 000...

Page 293: ...300 000 20 Scanner drive cable FA6 9295000 1 500 000 21 Halogen heater fixing assembly FH7 431 E 000 1 500 000 1oov FH7 4319 000 1 500 000 115v FH7 4320 000 1 500 000 230V 22 Upper roller bearing fixi...

Page 294: ...PCS 2 Vertical pathroller FA6 3636 000 2 300 000 D Paper Deck Pedestal D1 r Partsname asofJune l991 PartsNo Q ty Life copies Remarks FA5 2654 020 4 100 000 FL9 0015000 2 t 100 000 3 Separation roller...

Page 295: ...y Life copies Remarks 1 Pick up roller FF9 1003 000 2 100 000 2 Feederroller FL9 0015 000 1 100 000 3 Separation roller FL9 0010 000 1 100 000 4 Registration roller FA5 8434 000 1 300 000 6 4 COPYRIG...

Page 296: ...Corona wire Dry wipe each using lint free Grid wire paper then use alcohol Shield plate 6 Clean the transfer guide 7 Clean the separation feeder assembly Separation claw Feeder belt Feeder guide _____...

Page 297: ...Replace X Oil 0 Adjust Inspect or clean Servicing intervals 2z 42 6T lo 3l 2oe o Remarks xternal Copyboard glass 1 A 1 I I I I I Ozone filter I I I 1 0 1 I or t yr I 6 6 cDPvflKw 0 19alCMDNNC CANON l...

Page 298: ...Oil 0 Adjust 0 Inspect or clean Remarks For the CD unit the intervals are based on the number of copies made using the CD unit COPYRIGHT 0 1991 CANON INC CANON NPWlflU30 REV2 OCT l l PRINTED IN JAWIN...

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Page 301: ...I 2 I h J90 i JBO i DC power c nn nr nnfinn DC controller coior Code BK BLACK BL BLVE BR BROWN GY GRAY GN GREEN OR ORANGE PK PINK R RED SB SKY BLUE V VIOLET W WHlTE Y YELLOW Motor driver YG YELLOW GRE...

Page 302: ...FILTER B FL1 Manual lee I I Control panel t 4 2 1 2 3 4 J204 QQQQ Blankexposure lamp 1001 CANCMHC WON NP3QMI3WOREV20Cl 1991 F H EDINJA UN YFWMEA JJARW...

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Page 338: ...No r Shape Rank Remarks t Door switch TKtj 0093 A actuator Q t Front door Spring gauge CK 0054 B For checking pressure of YH cassette spring 11 For adjusting lens drive cable 0 to 15009 3 Replacement...

Page 339: ...wires 3 Heat resistant grease Lubricating the drive mechanisms e g copyboard driving gear fixing drive gear fixing ass y etc CANON Tool No CK 0427 500g can Equivalent grease can be used but should be...

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Canon NP3050, Service Manual

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Summary of Contents for NP3050

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