Kyocera Mita KM-1500 Скачать руководство пользователя страница 147 | Manualshive

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2DC

2-1-7

2-1-3 Electrophotographic system

Electrophotography is the technology used in laser printing which transfer data representing texts or graphics objects
into a visible image which is developed on the photosensitive drum, finally fusing on paper, using light beam generated
by a laser diode.

This section provides technical details on the copier’s electrophotography system.

(1) Electrophotographic cycle

The electrophotography system of the copier performs a cyclic action made of six steps as follows. Each step is
technically explained in the following sections.

Figure 2-1-7 Electrophotographic cycle

The sections for main charging, exposure (drum), developing, and cleaning are modularized in one Process unit.

2

Exposure

3

Developing

6

Cleaning

1

Main charging

4

Transfer

5

Fusing

Process unit

Fuser unit

Laser scaner unit

Drum

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Содержание KM-1500

Страница 1: ......

Страница 2: ...URER DISPOSE OF USED BATTERIES ACCORDING TO THE MANUFACTURER S INSTRUCTIONS ATTENTION IL Y A DANGER D EXPLOSION S IL Y A REMPLACEMENT INCORRECT DE LA BATTERIE REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU...

Страница 3: ...sonnel to ensure the safety of their customers their machines as well as themselves during maintenance activities Service personnel are advised to read this booklet carefully to familiarize themselves...

Страница 4: ...mpliance with warning messages using this symbol WARNING Serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol CAUTIO...

Страница 5: ...or dusty place This may cause fire or electric shock Do not install the copier near a radiator heater other heat source or near flammable material This may cause fire Allow sufficient space around th...

Страница 6: ...clean Dirt on them can cause abnormally high temperatures Do not remove the ozone filter if any from the copier except for routine replacement 2 Precautions for Maintenance WARNING Always remove the...

Страница 7: ...t all the caution labels that should be present on the machine according to the instruction handbook are clean and not peeling Replace with new ones if necessary Handle greases and solvents with care...

Страница 8: ...blems 1 5 13 1 No image appears entirely white 1 5 13 2 No image appears entirely black 1 5 13 3 Image is too light 1 5 13 4 Background is visible 1 5 13 5 A white line appears longitudinally 1 5 13 6...

Страница 9: ...1 6 4 1 6 4 Removing the feed roller 1 6 5 1 6 5 Removing the MP feed roller 1 6 6 1 6 6 Removing the transfer roller 1 6 8 1 6 7 Removing the principal circuit boards 1 6 9 1 Removing the engine boar...

Страница 10: ...1 ISU unit 2 1 6 2 1 3 Electrophotographic system 2 1 7 1 Electrophotographic cycle 2 1 7 1 1 Prosess unit mechanism 2 1 8 2 Main charging 2 1 9 2 1 Photo conductive drum 2 1 9 2 2 Charging the drum...

Страница 11: ...80 g m2 Manual feed Capacity Bypass 50 sheets 80 g m2 Standard memory 16 MB 11 MB of bitmapping memory and 5 MB of image storage memory Approx 50 pages of memory possible with A4 6 black originals Ad...

Страница 12: ...panel 5 Front top cover 6 Front cover 7 Process unit 8 Toner container 9 Lock lever 0 Toner container release lever Main charger cleaner Cassette 2 4 1 3 5 6 7 8 9 0 Paper guide Paper stopper Paper s...

Страница 13: ...op Clear key 4 Copy quantity magnification display 5 Copy exposure adjustment keys 6 Image mode selection key 7 Number of Copies Zoom key 8 Number of Copies Zoom key 9 Recall Enter key 0 Reduce Enlarg...

Страница 14: ...ng Ensure that the photoconductor will not be exposed to direct sunlight or other strong light when removing paper jams Avoid extremes of temperature and humidity abrupt ambient temperature changes an...

Страница 15: ...Installation procedure Unpack Inisializing the copier Connect the power cord Load paper Make test copies Start Remove the pin holding scanner unit Install a toner container Remove the tapes pads and s...

Страница 16: ...ation guide 5 Installation guide 6 Cleaning cloth 7 Outer case 8 Bottom pad 9 Upper pad 0 Side pad Figure 1 3 1 Unpacking 1 3 0 8 7 2 6 4 5 9 Front spacer Front pad Bottom spacer Corner support Produc...

Страница 17: ...Be sure not to pull the cassette out when holding the front of the copier Be sure that the original cover is closed whenever transporting the copier DO NOT attempt to carry the copier by holding only...

Страница 18: ...1 3 4 2DC 1 Remove the sheet and the two tapes 2 Open the original cover Remove the tapes pads and sheets Figure 1 3 3 Figure 1 3 4 Tapes Sheet Original cover...

Страница 19: ...the nine tapes the three pads and the sheet 4 Pull the cassette out of the copier 5 Remove the pad from inside the cassette Figure 1 3 5 Figure 1 3 7 Figure 1 3 6 Tapes Tape Pad Tapes Tapes Sheet Pad...

Страница 20: ...nd front cover 2 Store the pin for scanner unit on the inside of the front cover as shown in the illustration Be sure to save this pin as it is essential that it be used whenever the copier is moved T...

Страница 21: ...of impact or shock The drum in the process unit is sensitive to light Never expose the drum even to normal office lighting 500 lux for more than five minutes 4 Remove the protective cardboard 5 Move t...

Страница 22: ...forth five or six times so that the toner inside of it becomes evenly distributed 7 Remove the orange protective seal 8 Set the toner container into the process unit Figure 1 3 14 Figure 1 3 16 Figur...

Страница 23: ...process unit 10 Push the lock lever back into its locked position 11 Set the process unit into the copier by aligning the pins on both sides of the process unit with the guides inside the copier and t...

Страница 24: ...1 3 10 2DC 12 Close the front cover 13 Close the front top cover Figure 1 3 20 Figure 1 3 21 Front cover Front top cover...

Страница 25: ...lay on the copier s operation panel The copier will then begin operation and a countdown of the time until the copier will be ready will be shown 900 seconds 15 minutes As the copier is carrying out t...

Страница 26: ...factory setting is for A4 Letter size paper Adjusting the paper stopper for Folio or Oficio II size paper 1 Remove the stopper extension lock from the paper stopper 2 Slide the paper stopper towards...

Страница 27: ...sliding the guides to fit the width of the paper being loaded in the cassette NOTES The paper sizes are marked on the bottom of the cassette The default setting is for A4 Letter size paper 4 Set the p...

Страница 28: ...lines located on the paper width guides Be sure to load paper with the side to be copied onto facing down 5 Push the cassette securely all the way back into the copier until it stops Figure 1 3 32 Mak...

Страница 29: ...nt processor when carrying it as shown in the illustration Be particularly careful NOT to touch the guide film or the thin white surface indicated by the A in the illustration 2 Turn the main switch t...

Страница 30: ...connection cable does not get caught between the document processor and the copier when attaching the document processor to the copier 5 Gently close the document processor 6 Attached the open end of...

Страница 31: ...re to tighten the pins securely when connecting the cable 7 Turn the main switch to the copier back ON Warm up will begin 1 will appear on the operation panel and the Start indicator will light when t...

Страница 32: ...ion of the copier during the presence of a foreign substance may lead to fire or electric shock WARNING Turn the copier s power switch off Unplug the copier s power cable Procedure 1 Remove the one sc...

Страница 33: ...he zoom keys Press the start key Press the stop clear key The maintenance item is run Press the stop clear key Enter 001 using the copy exposure adjustment keys or the zoom keys and press the start ke...

Страница 34: ...original on the contact glass 15 U070 Adjusting the DP magnification 0 U071 Adjusting the DP scanning timing Adjusting leading edge registration 0 Adjusting trailing edge registration 0 U072 Adjusting...

Страница 35: ...U255 Setting auto clear time 90 U258 Switching copy operation at toner empty detection Single mode U260 Changing the copy count timing After ejection U265 Setting the destination specifications 0 U33...

Страница 36: ...ompletion Press the stop clear key while a selection item is displayed The indication for selecting a maintenance item No appears U001 Exiting the maintenance mode Description Exits the maintenance mo...

Страница 37: ...not operate 6 Press the start key The operation starts Copy operation is simulated without paper under the set conditions When operation is complete the selected item appears 7 To stop continuous oper...

Страница 38: ...ng memories Description Initializes the setting data other than that for adjustments due to variations between respective machines i e settings for counters service call history and mode settings As a...

Страница 39: ...eset key Completion Press the stop clear key after operation stops The indication for selecting a maintenance item No appears U031 Checking sensors for paper conveying Description Displays the on off...

Страница 40: ...input properties Description Adjusts the image scanning density Purpose Used when the entire image appears too dark or light Method Press the start key Setting 1 Change the setting using the zoom keys...

Страница 41: ...the machine left and decreasing it moves the position toward the machine right 3 Press the start key The value is set Test copy mode While this maintenance item is being performed copying from an ori...

Страница 42: ...operation press the stop clear key Completion Press the stop clear key when scanning stops The indication for selecting a maintenance item No appears U074 Adjusting the DP input light luminosity Desc...

Страница 43: ...lighting a copy exposure indicator using the copy exposure adjustment keys Copy exposure indicator Description Exp 1 Setting the mode on off Exp 2 Setting the reference data for identifying dust Sett...

Страница 44: ...duced 2 Press the start key The value is set The indication for selecting a maintenance item No appears Completion To exit this maintenance item without changing the current setting press the stop cle...

Страница 45: ...e shading and displays the result oFF Performs scanning after shading and displays the result 3 Press the start key Scanning is performed under the selected conditions and the result is displayed 4 Ch...

Страница 46: ...y by running the corresponding maintenance items Completion Press the stop clear key after auto adjustment is complete The indication for selecting a maintenance item No appears If the stop clear key...

Страница 47: ...xposure indicator using the copy exposure adjustment keys 2 Adjust the setting using the zoom keys Copy exposure Description Setting range Initial setting indicator Exp 1 Change in density when manual...

Страница 48: ...ting a maintenance item No appears U101 Setting the other high voltages Description Changes the developing bias clock and the transfer charging output timing Purpose To check the developing bias clock...

Страница 49: ...ey The indication for selecting a maintenance item No appears U157 Checking clearing the developing drive time Description Displays the developing drive time for checking clearing or changing a figure...

Страница 50: ...ing of paper or solve a fixing problem on thick paper Method Press the start key The screen for selecting an item is displayed Setting 1 Select the item to be set by lighting a copy exposure indicator...

Страница 51: ...temperature Method 1 Press the start key CLE appears 2 Press the start key The fixing problem data is initialized Completion Press the stop clear key The indication for selecting a maintenance item N...

Страница 52: ...e keys on the operation panel are pressed in order from the left to right the figure shown on the copy quantity display increases in increments of 1 If there is an LED corresponding to the key pressed...

Страница 53: ...a maintenance item No appears U252 Setting the destination Description Switches the operations and screens of the machine according to the destination Purpose To return the destination setting to its...

Страница 54: ...aintenance item No appears U255 Setting auto clear time Description Sets the time to return to initial settings after copying is complete Purpose To be set according to frequency of use Set to a compa...

Страница 55: ...set according to user copy service provider request If a paper jam occurs frequently in the eject section when the number of copies is counted at the time of paper ejection copies are provided withou...

Страница 56: ...ess the start key The current setting is displayed Setting 1 Change the setting using the zoom keys Description Setting range Initial setting Size conversion factor 0 0 to 3 0 1 0 2 Press the start ke...

Страница 57: ...justment keys Image mode LED Copy exposure Copy quantity display count value group No indicator 1 Exp 1 First 3 digits of bypass copy count Exp 2 Last 3 digits of bypass copy count Exp 3 Clearing the...

Страница 58: ...ing a maintenance item No appears U904 Checking clearing the service call counts Description Displays or clears the service call code counts by types Purpose To check the service call code status by t...

Страница 59: ...al count Description Display the total count value Purpose To check the total count value Method 1 Press the start key 2 Change the indication of the copy quantity display by lighting a copy exposure...

Страница 60: ...ount Exp 1 flashing Clearing the count CLE 2 Exp 1 lit A6 display the A6 size Exp 2 lit First 3 digits of A6 size copy count Exp 3 lit Last 3 digits of A6 size copy count Exp 1 flashing Clearing the c...

Страница 61: ...e clearing on Executing the clearing 3 Press the start key The accounting counter is cleared Completion To exit this maintenance item without clearing the data press the stop clear key The indication...

Страница 62: ...Outputting a VTC PG pattern Description Selects and outputs a VTC PG pattern created in the copier Purpose When performing respective image printing adjustments used to check the machine status apart...

Страница 63: ...remove paper jammed in the copier open the face up output tray front top cover front cover or pull the drawer out To remove original jammed in the DP open the DP original cover Paper misfeed detectio...

Страница 64: ...2DC 1 5 2 2 Paper misfeed detection conditions Registration sensor Exit sensor Figure 1 5 2...

Страница 65: ...turned off for 1 s and turned back on once but the sensor again fails to turn on within 1120 ms Registration sensor does not turn on within 1160 ms of the feed clutch turning on the clutch is then suc...

Страница 66: ...ch malfunctions Electrical problem with the feed clutch Check visually and remove it if any Run maintenance item U031 and turn registration sensor on and off manually Replace registration sensor if in...

Страница 67: ...extremely dirty or de formed Check if the separators are dirty or deformed Check visually and replace any deformed roller Run maintenance item U031 and turn registration sensor on and off manually Re...

Страница 68: ...n tact each other Check if the upper exit roller and exit pulleys con tact each other Run maintenance item U031 and turn registration sensor on and off manually Replace registration sensor if indicati...

Страница 69: ...g pulley or feed pulley is dirty with pa per powder The conveying roller and conveying pulleys do not contact correctly The exit roller and exit pul leys do not contact cor rectly Remove any found Run...

Страница 70: ...fective main board KP 5060 or engine board KP 5061 Poor contact in the connector ter minals Defective main board KP 5060 or engine board KP 5061 Replace the main board KP 5060 and check for correct op...

Страница 71: ...n motor rotation control circuit Defective drive transmission sys tem Poor contact of the connector ter minals Defective scanner home position sensor Defective engine board KP 5061 or scanner board KP...

Страница 72: ...ct in the polygon motor connector termi nals Defective polygon motor Defective engine board KP 5061 Defective laser diode Defective polygon motor Defective main board KP 5060 Replace the scanner board...

Страница 73: ...nector ter minals Defective power supply board KP 5059 Defective engine board KP 5061 Check the connection of connector CN4 on the power supply board KP 5059 and the continuity across the connector te...

Страница 74: ...ive external temperature ther mistor Poor contact in the operation board connector terminals Defective external temperature ther mistor Defective waste toner sensor Defective engine board KP 5061 Defe...

Страница 75: ...1 5 16 7 A black line appears laterally See page 1 5 16 8 One side of the copy image is darker than the other See page 1 5 16 9 Black dots appear on the image See page 1 5 17 10 Image is blurred See p...

Страница 76: ...board KP 5061 E Defective high voltage board 2 Exposure lamp fails to light A The connector terminals of the exposure lamp make poor contact B Defective CCD board KP 5065 C Defective scanner board KP...

Страница 77: ...kground is visible Causes 1 Insufficient toner 2 Deteriorated developer 3 Dirty or deteriorated drum Causes Check procedures corrective measures 1 Insufficient toner 2 Deteriorated developer 3 Dirty o...

Страница 78: ...ures corrective measures 1 Dirty main charger wire 2 Defective exposure lamp Causes Check procedures corrective measures 1 Flawed drum 2 Dirty developing section 3 Leaking main charger housing 7 A bla...

Страница 79: ...Deformed or worn cleaning blade Causes Check procedures corrective measures 1 Dirty or flawed drum 2 Dirty contact glass 3 Deformed or worn cleaning blade Causes 1 Deformed press roller 2 Paper conve...

Страница 80: ...Replace the paper 3 Flawed drum Replace the process unit 13 Offset occurs 12 Paper creases Causes 1 Paper curled 2 Paper damp Causes Check procedures corrective measures 1 Paper curled Check the paper...

Страница 81: ...rocedures corrective measures 1 Misadjusted center line of image printing Readjust the center line of image printing see pages 1 6 42 2 Misadjusted scanner center line Readjust the scanner center line...

Страница 82: ...ain switch Check for continuity If none remove the cause of blowing and replace the fuse Check for continuity across the contacts of switch If none re place the switch With AC present check for 24 V D...

Страница 83: ...ty across the coil If none replace the registra tion clutch Reinsert the connector Also check for continuity within the con nector cable If none remedy or replace the cable Run maintenance item U032 a...

Страница 84: ...round registration snsor or exit sensor Defective registration sen sor Defective exit sensor Poor contact in the con nector terminals of inter lock switch Defective interlock switch Wiring is broken s...

Страница 85: ...and MP feed roller are dirty with paper powder Check if the feed roller and MP feed roller are deformed Electrical problem with the feed clutch and MP feed clutch Check if the surfaces of the upper a...

Страница 86: ...nly the specified parts to replace the fixing unit thermostat Never substitute electric wires as the copier may be seriously damaged Do not perform aging without the waste toner tank installed during...

Страница 87: ...container out of the copier Figure 1 6 1 Removing the process unit CAUTIONS After removing the process unit seal it in the protective bag and place it on flat surface Do not place the process unit in...

Страница 88: ...crew and then remove the rear cover Figure 1 6 2 Removing the memory cover and rear cover 3 While unlatching the two latches and then remove the front top cover face down output tray Latches Front top...

Страница 89: ...3 3 Unlatch the snaps and hook remove the right cover Figure 1 6 4 Removing the right cover 3 Removing the left cover 1 Remove the front top cover face down output tray See page1 6 3 2 Unlatch the sna...

Страница 90: ...the D cut shaft into the D shape hole of the feed roller 1 Remove the paper cassette and the process unit See page 1 6 2 2 Stand the machine the front side up 3 Move the feed roller in the direction A...

Страница 91: ...roller 1 Remove the engine board See page 1 6 9 2 Remove one screw 3 Remove the grounding plate 4 Remove one stop ring 5 Remove the MP feed clutch Figure 1 6 7 Removing the MP feed clutch Screw Groun...

Страница 92: ...pressing the latch by using the driver and then remove the MP feed unit Figure 1 6 8 Removing the MP feed unit 10 Remove the stop ring and then remove the MP feed roller Latch Screw Toner sensor Spri...

Страница 93: ...ings make sure to refit the black colored bush and spring on the left side Also observe the correct direction to which the bush is fit in reference to the paper passing direction 1 Remove the process...

Страница 94: ...ht cover See pages1 6 4 2 Remove all twelve connectors from the engine board 3 Remove three screws 4 Remove the engine board When replacing the board with a new board remove the EEPROM from the old bo...

Страница 95: ...three connectors 3 Remove the one flexible flat cable 4 Remove the seven screws and then remove the main controller shield with main board Figure 1 6 12 Removing the main controller shield with main...

Страница 96: ...move two screws at the back of the main board When replacing the board with a new board remove the EEPROM from the old board and mount it to the new board Figure 1 6 13 Removing the main board Screws...

Страница 97: ...om the power supply board 4 Remove eight screws 5 Remove the power supply board and high voltage board Note The high voltage board is directly connected to the bias board 6 Separate the high voltage b...

Страница 98: ...y board and high voltage board See the previous page 4 Stand the machine with the front side up 5 Remove one connector from the bias board 6 Remove five screws 7 Remove the bottom cover 8 Remove the t...

Страница 99: ...1 Remove the cassette and process unit See page 1 6 2 2 Remove the right cover See pages 1 6 4 3 Remove three connectors from the main motor 4 Remove four screws 5 Remove main motor Figure 1 6 16 Remo...

Страница 100: ...Remove the engine board See page 1 6 9 7 Remove wires from wire saddles on the cord cover 8 Remove one screw 9 Remove the cord cover Figure 1 6 17 Removing the cord cover Wire saddles Wire saddle Cord...

Страница 101: ...ve one screw and then remove the feed clutch 13 Remove three stop rings 14 Remove MP feed clutch gear feed clutch gear and registration clutch gear Figure 1 6 18 Removing the clutches Stop ring Stop r...

Страница 102: ...2DC 1 6 17 15 Remove the four screws 16 Remove the drive unit Figure 1 6 19 Removing the drive unit Screws Drive unit...

Страница 103: ...e the fuser unit gear and the copier s drive gear are properly meshed with each other For this rotate the main motor several turns before fixing screws 1 Remove the rear cover See page 1 6 3 2 Remove...

Страница 104: ...2DC 1 6 19 6 Remove two screws 7 Open and split the fuser unit Figure 1 6 21 Splitting the fuser unit Screw Screw Fuser unit...

Страница 105: ...tantial period of time until it cools down 1 Remove and split the fuser unit See page 1 6 18 2 Loosen the stopper screws 3 Hold the separation claw upright and remove the separation claw and separatio...

Страница 106: ...urface can prevent proper fusing of toner on paper When holding When refitting the heater lamp direct the short distance side from the projection in the middle of the lamp facing the machine s left si...

Страница 107: ...ial period of time until it cools down 1 Remove and split the fuser unit See page 1 6 18 2 Remove the heater lamp See previous page 3 Press the lamp A holder away from the heat roller Pull up both hea...

Страница 108: ...2DC 1 6 23 4 Remove the heat gear Z33 heat R bush and heat L bush from the heat roller Figure 1 6 25 Removing the heat roller Heat gear Z33 Heat R bush Heat L bush Heat roller...

Страница 109: ...tor 1 Remove and split the fuser unit See page 1 6 18 2 Remove the heater lamp See page 1 6 21 3 Remove the heat roller See page 1 6 22 4 Remove one screw 5 Remove the thermistor Figure 1 6 26 Removin...

Страница 110: ...ls of the thermal cutout 1 Remove and split the fuser unit See page 1 6 18 2 Remove the heater lamp See page 1 6 21 3 Remove the heat roller See page 1 6 22 4 Remove the two screws 5 Remove the therma...

Страница 111: ...extremely hot immediately after the copier was running Allow substantial period of time until it cools down 1 Remove and split the fuser unit See page 1 6 18 2 Remove the press roller from the fuser u...

Страница 112: ...r See page 1 6 4 2 Remove the five connectors and two flexible flat cables from the scanner board 3 Remove the five screws and then remove the scanner board Screws Screws Screw Scanner board Connector...

Страница 113: ...2DC 1 6 28 4 Remove the two screws 5 Slide the scanner unit and then remove the scanner unit Scanner unit Screws Figure 1 6 30 Removing the scanner unit...

Страница 114: ...move two grounding plates 3 Remove each two screws and then remove the right and left scanner stays Figure 1 6 31 Removing the right and left stays 4 Remove four connectors 5 Remove six screws and the...

Страница 115: ...t Conncetor 1 2 3 6 Remove three screws 7 Remove two connectors from the laser scanner unit 8 Remove the laser scanner unit When refitting the laser scanner unit tighten a screw in order of 3 from 1 F...

Страница 116: ...2DC 1 6 31 Eraser lamp 9 Remove the eraser lamp 5 2 34 Removing the eraser lamp...

Страница 117: ...driver through the holes and then remove the operation unit Hook Hole Hole Operation unit Hook Figure 1 6 35 Removing the operation unit 2 Remove two screws and then remove the original holder cover...

Страница 118: ...5 Remove the flexible flat cable from the ISU board s connector 6 Remove the scanner belt from the belt hook of scanner unit 7 Remove the ISU unit from the scanner shaft Remove the ISU unit taking car...

Страница 119: ...from the inverter board 3 Remove the one screw and then remove the inverter board Screw Connectors Inverter board ISU unit ISU unit Exposure lamp mount Hook Figure 1 6 39 Removing the inverter board 4...

Страница 120: ...les Exposure lamp Exposure lamp mount 5 Remove the exposure lamp and cables from the exposure lamp mount Do not touch the glass surfaces of the exposure lamp with bare hands Figure 1 6 41 Removing the...

Страница 121: ...t See page 1 6 32 2 Remove the exposure lamp See page 1 6 34 3 Unhook the two mirror A holders and then remove the scanner mirror A Scanner mirror A Scanner mirror A Hook Mirror A holder Scanner mirro...

Страница 122: ...he scanner board Figure 1 6 43 Removing the scanner motor 1 4 Remove two screws and then remove two grounding plates Figure 1 6 45 Removing the scanner motor 3 Connector Scanner board Screws Scanner b...

Страница 123: ...Stopper ring Scanner shaft Figure 1 6 47 Removing the scanner motor 5 Figure 1 6 46 Removing the scanner motor 4 8 Remove the one stopper ring and then detach the scanner shaft Detach the shaft takin...

Страница 124: ...ble Cable clamps 9 Remove the cable from the cable clamps 10 Remove the four screws and then remove the scanner motor mount with scanner motor Figure 1 6 48 Removing the scanner motor 6 11 Remove the...

Страница 125: ...om the copier See page 1 6 2 2 Unlatch the three snaps and remove the main charger cap 3 Draw the main charger unit in the direction of arrow A then pull it out in the direction of arrow B Figure 1 6...

Страница 126: ...tting range 3 0 3 0 Initial setting 0 0 Changing the value by 1 moves the leading edge by 1 0 mm Press the start key to output a test pattern Exp 1 lit Leading edge registration from the drawer Exp 2...

Страница 127: ...y 1 moves the center line by 1 mm Select the item to be adjusted using the copy exposure adjustment keys Exp 3 lit Center line from the drawer Exp 1 flashing Center line from the bypass tray Exp 2 fla...

Страница 128: ...e start key to output a test pattern Press the start key The new setting is stored Setting range initial setting change in value per step Printer leading edge margins 0 10 3 0 0 5 mm Printer left righ...

Страница 129: ...e value the larger the amount of slack the smaller the value the smaller the amount of slack The new setting is stored Select the item to be adjusted using the copy exposure adjustment keys Is the lea...

Страница 130: ...Copy example Copy example 2 Figure 1 6 55 Enter maintenance mode Enter 065 using the copy exposure adjustment keys or zoom keys Yes No Start End Press the program key and the machine enters the test c...

Страница 131: ...py example 2 decrease the value using the zoom key Press the start key The new setting is stored Press the start key Select Exp 2 auxiliary scanning direction using the copy exposure adjustment keys E...

Страница 132: ...t Enter maintenance mode Enter 066 using the copy exposure adjustment keys or zoom keys Press the start key Press the program key and the machine enters the test copy mode Place an original and press...

Страница 133: ...adjustment keys or zoom keys Press the start key Press the program key and the machine enters the test copy mode Place an original and press the start key to make a test copy Is the scanner center lin...

Страница 134: ...ter maintenance mode Enter 403 using the copy exposure adjustment keys or zoom keys Press the start key Exp 1 lit Scanner left margin Exp 2 lit Scanner leading edge margin Exp 3 lit Scanner right marg...

Страница 135: ...No Start End Press the stop clear key to exit maintenance mode Is the image correct Enter 070 using the copy exposure adjustment keys or zoom keys Press the program key and the machine enters the tes...

Страница 136: ...ustment keys or zoom keys Yes No Start End For copy example 1 decrease the value using the zoom key For copy example 2 increase the value using the zoom key Press the program key and the machine enter...

Страница 137: ...an original on the DP and make a test copy Is the image correct Setting range 42 32 Initial setting 0 Changing the value by 1 moves the copy image by 0 254 mm Press the start key The new setting is s...

Страница 138: ...e mode Place an original on the DP and make a test copy Yes No Start End Change the setting For copy example 1 increase the value using the zoom key For copy example 2 decrease the value using the zoo...

Страница 139: ...es No Start Enter maintenance mode Enter 404 using the copy exposure adjustment keys or zoom keys Press the start key Exp 1 lit DP left margin Exp 2 lit DP leading edge margin Exp 3 lit DP right margi...

Страница 140: ...sert the power plug and turn the power switch on 5 The upgrade operation starts and the Copy quantity magnification display changes as follows JIG 1 99 6 When the upgrade operation is complete the che...

Страница 141: ...tray as manipulated by the user The figure below shows the components in the paper feeding system and the paths through which the paper travels The sensors clutches etc are described in the following...

Страница 142: ...eed clutch MP feed clutch Registration sensor Registration clutch Engine board Main motor EXITN MOTORN RESDRN RESIT PAPERN MPFDRN FEDDRN HANDSN YC7 10 YC8 10 YC5 2 YC4 1 YC9 2 YC4 9 YC6 2 YC8 8 1 MP f...

Страница 143: ...ransfer roller Driving power train 1 Main motor gear 2 Registration clutch 3 MP feed clutch 4 Feed clutch 5 MP feed roller 6 Feed roller 7 Registration gear Z13 8 Registration gear Z20 9 Gear 53 0 Low...

Страница 144: ...Original holder 2 Scanner upper frame 3 Scanner lower frame 4 Contact glass 5 DP Contact glass 6 Scanner rail 7 Scanner motor mount 8 Tension pulley mount 9 Scanner belt 0 Scanner motor Tension pulle...

Страница 145: ...2 YC11 10 YC11 11 YC11 12 YC1 5 YC1 14 YC1 12 YC1 10 YC1 8 YC1 6 YC1 18 YC1 20 YC1 22 YC1 29 30 CN11 1 CN11 4 Scanner board Engine board Main board Inverter board Exposure lamp ISU unit Scanner unit C...

Страница 146: ...nput through reflection by the three mirrors and through the ISU lens to the CCD image sensor on the CCD board The CCD image sensor scans one row of the image in the main scan direction converts it to...

Страница 147: ...ides technical details on the copier s electrophotography system 1 Electrophotographic cycle The electrophotography system of the copier performs a cyclic action made of six steps as follows Each step...

Страница 148: ...in unit C For main unit Transfer roller D For toner container 1 Main charger unit 2 Charger wire 3 Grid 4 Developing roller 5 Gear Z14 Z18 6 Gear Z14 Z36 7 Gear Z18 Z36 8 Free gear Z40 9 Gear Z18 Z35H...

Страница 149: ...ch as a screwdriver etc resulting in a print quality problem Also finger prints can cause deterioration of the OPC layer therefore the drum in the process unit must be handled with care Substances lik...

Страница 150: ...ate its photoconductive layer is given a uniform positive corona charge dispersed by the main charger wire B Due to high voltage scorotron charging the charging wire can get contaminated by oxidizatio...

Страница 151: ...anner unit B Figure 2 1 11 Exposure The laser beam 780 nm wavelength beam is dispersed as the polygon motor polygon mirrors revolves to reflect the laser beam over the drum Various lenses and mirror a...

Страница 152: ...ence each mirror corresponding to one scanned line width on the drum when laser beam scans on it 4 F theta lens The f theta lens equalizes focusing distortion on the far ends of the drum 5 Sensor mirr...

Страница 153: ...electrical resistance of the photoconductor is reduced and the potential on the photoconductor is also lowered Resulted on the drum surface is an electrostatic image which represents the data to print...

Страница 154: ...The developing roller A is applied with the AC weighted positive DC power source Toner E on the developing roller A is given a positive charge The positively charged toner E is then attracted to the a...

Страница 155: ...and the transfer roller Figure 2 1 15 Transfer The nominal transfer bias is set to approximately 1 8 kV limit with the 6 mA current Since the ideal potential of the transfer bias depends on the thickn...

Страница 156: ...cratch the roller surface as doing so may result in print problems The heat roller has four claws which are continuously in contact with its surface These claws prevent the paper on which toner has be...

Страница 157: ...igure 2 1 17 Fuser unit mechanism 0 1 2 3 4 5 6 7 8 9 1 Heat roller 2 Idle gear Z34 3 Exit gear Z23 4 Idle gear Z18 5 Heat gear Z33 6 Press roller 7 Heater lamp 8 Thermal cutout 9 Separator s 0 Thermi...

Страница 158: ...e toner container into the waste toner reservoir D Figure 2 1 18 Drum cleaning and erasing static charge After the drum B is physically cleaned it then must be cleaned to the electrically neutral stat...

Страница 159: ...witch 5 Bias board KP 5067 E Cassette switch F Registration sensor G Paper sensor 6 Main motor 7 Cooling fan 8 Registration clutch 9 Feed clutch 0 MP feed clutch MP paper sensor Toner sensor PWB KP 78...

Страница 160: ...2 2 2 2 Scanner unit 1 Operation board 2 CCD board KP 5065 3 Scanner board KP 5063 4 Inverter board 5 Scanner home position sensor 6 Scanner motor 7 Exposure lamp Figure 2 2 2 Scanner unit 2 4 6 3 5...

Страница 161: ...connector CPUA23 21 DBRXD EEDIO KEYON KEY1N EY2N SCANON SCAN1N SCAN2N SCAN3N SCAN4N SCAN5N LEDON LED1N LED2N LED3N LED4N LED5N LED6N BUZERDRN EEPROM Operator panel I F Scanner I F EESCL DBTXD CODE DIM...

Страница 162: ...MHVDR THVDR RTHDR HVISEL HVCLK Regist ration sensor Paper sensor MP paper sensor 5 V DC output circuit TNFULL TONER SLEEP EXITN ZCROSS HEATN THERMA FAN1 RESIT Main motor Engine board KP 5061 CPU U1 E...

Страница 163: ...pplies to the eraser lamps The eraser lamps thus illuminate as the current flows through the eraser lamp the pin 2 of connector YC14 resistors R109 R110 and R111 transistor Q18 and the ground GND PGND...

Страница 164: ...ansition of alternating plus and negative current and detects the zero crosses This detector derives the resultant ZCROSS signal at its pin 43 of the engine CPU U1 Since abrupt change in the current f...

Страница 165: ...as the heater lamp is energized for the 6 positive and negative envelops out of 10 The duty cycle is 0 since the heater lamp is kept turned off for the whole envelops CPU U1 selectively switches among...

Страница 166: ...n On On On On On On On On On On Off Off On On Off On On Off On On Off Off On Off Off Off Off Off Off Off Off Off Off Off Off On Off Off On On Off Off Variation No 4 Duty 40 Variation No 5 Duty 0 Heate...

Страница 167: ...When PLL control IC IC1 finds that the polygon motor is revolving at the rated speed turns PLGDRN to L level to acknowledge the engine CPU that the rated speed has been achieved On the contrary if PL...

Страница 168: ...g Over current detection circuit Power switch Current fuse Noise filter circuit Transformer T1 24 V DC rectifier smooth ing circuit 24 V DC shutoff circuit Over voltage detection circuit Photo coupler...

Страница 169: ...he toner sensor Figure 2 3 8 Bias board circuit block diagram Developing roller Bias board KP 5067 Engine board Regist ration sensor Developing bias output circuit FAN1 FAN FAN2 PAPERN SWIN RESIT TONE...

Страница 170: ...engine board Figure 2 3 9 High voltage board circuit block diagram Control and driver circuit Transfer bias output positive voltage circuit MHVDR THVDR RTHVDR PSEL1 PSEL2 HVISEL 24V2 24V2 24V2 24V3 2...

Страница 171: ...er supply board is disconnected deactivating the high voltage output laser output main motor output for safety The cooling fan is an exception Since the cooling fan is directly fed with 24 V DC from t...

Страница 172: ...SW SWN CPN and RSN based on the clock for driving the CCD sensor CCDCLK supplied from the main board through the scanner board The image signals obtained from scanning of an original are divided into...

Страница 173: ...corresponding key switch is turned on feeding the low level of the scan signal SCAN1N back to the main board via the return signal KEY0N The main board locates the position where the line outputting t...

Страница 174: ...oard CCD board and optional document processor Figure 2 3 13 Scanner board circuit block diagram Operation board Inverter board Scanner board Optional DP Main board Engine board Driver circuit U1 Expo...

Страница 175: ...48 ms 99 ms OVSYNC HPSWN MOTA MOTNA MOTB MOTNB MOTORN MHVDR HVCLK FEDDRN REGDRN RESIT EXITN ERASERN RTHVDR THVDR PSEL1 PSEL2 HVISEL YC3 4 YC10 4 YC11 1 2 3 4 YC4 9 YC8 5 YC7 7 YC4 1 YC6 2 YC8 8 YC7 10...

Страница 176: ...ms 116 ms OVSYNC HPSWN MOTA MOTNA MOTB MOTNB MOTORN MHVDR HVCLK FEDDRN REGDRN RESIT EXITN ERASERN RTHVDR THVDR PSEL1 PSEL2 HVISEL YC3 4 YC10 4 YC11 1 2 3 4 YC4 9 YC8 5 YC7 7 YC4 1 YC6 2 YC8 8 YC7 10...

Страница 177: ...325 ms 275 ms 116 ms OVSYNC HPSWN MOTA MOTNA MOTB MOTNB MOTORN MHVDR HVCLK FEDDRN REGDRN RESIT EXITN ERASERN RTHVDR THVDR PSEL1 PSEL2 HVISEL YC3 4 YC10 4 YC11 1 2 3 4 YC4 9 YC8 5 YC7 7 YC4 1 YC6 2 YC...

Страница 178: ...ZCROSS HVCLK 5V 5V 5V SGND SGND SGND FAN 5V TONER SGND THERM 5V 24V3 24V3 PGND PGND PAPERN SWIN RESIT TONEREPY 24V2 MHVDR FAN2 FAN1 THVDR THERM 24V2 PGND PFMDRN PFCLK PFPFPER PFSEN 24V3 FEDDRN FEDDRN...

Страница 179: ...119 Wood Dale Illinois 60191 TEL 630 238 9982 FAX 630 238 9487 Western Region 14101 Alton Parkway Irvine California 92618 7006 TEL 949 457 9000 FAX 949 457 9119 Southeastern Region 1500 Oakbrook Driv...

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