Olivetti d-Copia 18MF Operation Service Manual Download Page 192

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2-3-20

Control
and
driver
circuit

Transfer bias
output
positive voltage
circuit

MHVDR1,2

THVDR,
RTHVDR

PSEL1

HVISEL

+24V2

+24V3

+24V1

+5V

ZCROSS,
THERM, EXITN

Interlock switch

High voltage PWB

Bias PWB

Power supply PWB

Engine PWB

Main
charger

Transfer
roller

High voltage output circuit

FAN,
HEATN, SLEEPN

Control
and
driver
circuit

FET

2-3-5 High voltage PWB

The high voltage PWB contains the high voltage output circuit, interlock switch circuit as well as providing a liaison
connection with the power supply PWB, bias PWB, and the engine PWB.

Figure 2-3-13 High voltage PWB circuit block diagram

Figure 2-3-14 High voltage PWB silk-screen diagram

SW1

YC1

T201

T101

YC2

YC3

Service Manual Y104230-6

Summary of Contents for d-Copia 18MF Operation

Page 1: ...d Copia 18MF Copier SERVICE MANUAL Code Y104230 6...

Page 3: ...ery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacturer Dispose of used batteries according to the manufacturer s instructions CAUTION Double pole neu...

Page 4: ...sure 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 with the wa...

Page 5: ...h 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 CAUTION Bodily inj...

Page 6: ...ace 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 the copier to...

Page 7: ...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 power plug f...

Page 8: ...ution 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 by following...

Page 9: ...gs 1 4 19 1 4 3 Service settings 1 4 21 1 Executing a service setting item 1 4 21 2 Contents of service setting items 1 4 22 1 5 Troubleshooting 1 5 1 Paper misfeed detection 1 5 1 1 Paper misfeed ind...

Page 10: ...3 Skewed paper feed 1 5 25 4 The scanner does not travel 1 5 25 5 Multiple sheets of paper are fed at one time 1 5 25 6 Paper jams 1 5 25 7 Abnormal noise is heard 1 5 25 1 6 Assembly and Disassembly...

Page 11: ...52 13 Adjusting the margins for scanning the original from the DP 1 6 53 1 7 Upgrading the firmware 1 7 1 Upgrading the firmware on the main PWB 1 7 1 2 1 Mechanical construction 2 1 1 Paper feeding s...

Page 12: ...2 3 6 CCD PWB 2 3 22 2 3 7 Operation PWB 2 3 24 2 3 8 Scanner PWB 2 3 26 2 4 Appendixes Timing chart No 1 2 4 1 Timing chart No 2 2 4 2 Timing chart No 3 2 4 3 Wiring diagram 2 4 4 Service Manual Y104...

Page 13: ...ets 160 g m2 1 sheet Transparency Stacking capacity Output tray Approx 150 sheets 80 g m2 Face up tray 30 sheets 80 g m2 1 sheet Special paper Standard memory 96 MB 64 MB of system memory and 32 MB of...

Page 14: ...PDL Scanning functions Scanning speed Monochrome 18 spm Full color or Grayscale 4 8 spm 1 1 A4 81 2 11 200 dpi Resolution 200 100 200 400 200 300 400 and 600 dpi Color mode Full color Grayscale and Mo...

Page 15: ...container 9 Lock lever 0 Toner container release lever Main charger cleaner Cassette Paper guide Paper stopper 2 1 3 5 6 7 8 9 0 4 Stopper extension lock Face down output tray MP tray Extension tray...

Page 16: ...ator Memory indicator Error indicator System menu Counter key and indicator Log out key and indicator Numeric keys Reset Power key Figure 1 1 2 Main power indicator Original quality key and indicator...

Page 17: ...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 and hot or cold air...

Page 18: ......

Page 19: ...re Unpack Inisializing the machine Connect the power cord Load paper Using the one touch key sheet Make test copies Start Remove the pin holding scanner unit Install a toner container Remove the tapes...

Page 20: ...per pad 0 Side pad Figure 1 3 1 Unpacking Front spacer Front pad Bottom spacer Cassette spacer Left pad Right pad Corner supports Products cover Plastic bag Plastic bag 0 3 9 5 4 6 2 8 1 7 Pocket spac...

Page 21: ...ull the cassette out when holding the front of the machine Be sure that the original cover is closed whenever transporting the machine Do not attempt to carry the machine by holding only the top porti...

Page 22: ...1 3 4 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 Service Manual Y104230 6...

Page 23: ...o pads and the sheet 4 Pull the cassette out of the machine 5 Remove the cassette spacer from inside the cassette Figure 1 3 5 Figure 1 3 7 Figure 1 3 6 Tape Tape Cassette Cassette spacer Tapes Tapes...

Page 24: ...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 machine is moved The location fo...

Page 25: ...hock 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 the lock lever...

Page 26: ...es evenly distributed 7 Remove the orange protective seal 8 Align the knob on the left side of the container with the groove in the process unit and set the toner container into the process unit Figur...

Page 27: ...ck lever back into its locked position 11 Set the process unit into the machine by aligning the pins on both sides of the process unit with the guides inside the machine and then slide the process uni...

Page 28: ...1 3 10 12 Close the front cover 13 Close the front top cover Figure 1 3 20 Figure 1 3 21 Front cover Front top cover Service Manual Y104230 6...

Page 29: ...wer switch to the machine ON The machine will begin replenishing the toner Wait until it has completed that operation 15 minutes Once the toner has been replenished and the machine is once again in a...

Page 30: ...ng 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 the rear of th...

Page 31: ...des 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 paper in the cas...

Page 32: ...the paper and the stopper or guides readjust the paper stopper and or the paper width guides as appropriate When you are loading paper into the cassette make sure that the side to be copied or printe...

Page 33: ...nter the information for the registered destinations onto the one touch key sheet There are 4 spare one touch key sheets included with this machine 3 Insert the sheet back between the one touch keys f...

Page 34: ...the power switch located on the rear side of the machine off O and remove the power cord from the outlet 2 Connect the network cable to the network connector at the rear side of the machine 3 Connect...

Page 35: ...e power cord from the outlet and turn the power off to computer 2 Connect the printer cable to the parallel interface connector or USB interface connector located at the rear side of the machine 3 Con...

Page 36: ...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 power switch located on the rear side of the machine o...

Page 37: ...e does not get caught between the document processor and the machine when attaching the document processor to the machine 5 Gently close the document processor 6 Attached the open end of the connectio...

Page 38: ...pins securely when connecting the cable 7 Connect the power cord and turn the power switch on Warm up will begin 1 will appear on the operation panel and the start indicator will light when the machi...

Page 39: ...f the machine during the presence of a foreign substance may lead to fire or electric shock WARNING Turn the power switch off Disconnect the power cord Procedure 1 Remove the screw and then remove the...

Page 40: ...fore removing the FAX assembly from the bag Hold the FAX assembly by the metal plate on front as shown Do not touch the circuits or electronic components on the PWB Plate Screw Screw Figure 1 3 49 Pro...

Page 41: ...h the core to the power cord of the machine so that the stopper section is located near the power plug as shown in the illustration Figure 1 3 53 5 Plug the power cord into the machine Turn the machin...

Page 42: ...uth Africa Thailand U S A South America Saudi Arabia CTR21 European nations Italy Germany Spain U K Netherlands 159 169 181 242 243 253 Code Code Destination Destination Destination Sweden France Aust...

Page 43: ...Run another maintenance item Turning power switch off and back on No No Yes Yes Select Maintenance mode using the up down cursor keys Enter the maintenance item number using the up down keys While pre...

Page 44: ...anning position adjust mode on off 35 U089 Outputting a MIP PG pattern U101 Setting the other high voltages 26 55 48 43 24 60 U130 Initial setting for the developer OFF U144 Setting toner loading oper...

Page 45: ...RAM output a list of the current settings of the maintenance items to reenter the settings after initialization or replacement Method 1 Press the enter key A selection item appears 2 Select the item t...

Page 46: ...er feed timeout H 10 No paper feed from the MP tray B 11 No paper feed from the cassette C 12 No paper feed from the optional cassette D 20 Multiple sheets in the MP tray B 21 Multiple sheets in the c...

Page 47: ...ice Call Log Log number 1 to 8 service calls are recorded If the number of service calls exceeds 8 the oldest log is deleted Count Number of pages Total page counter at the time of service call Servic...

Page 48: ...in the paper Adjustment See page 1 6 43 U060 Adjusting the scanner input properties Description Adjusts the image scanning density Purpose Used when the entire image appears too dark or light Method P...

Page 49: ...le this maintenance item is being performed copying from an original can be made in test print mode 1 Press the system menu counter key The machine enters the test print mode 2 Set the original and pr...

Page 50: ...the DP scanning position adjust mode in which the DP original scanning position is adjusted automatically by determining the presence or absence of dust on the slit glass Also changes the reference d...

Page 51: ...whether output of is on or off Display Description Off Output of off On Output of on 4 Press the enter key 5 Press the system menu counter key The machine enters the PG pattern output mode 6 Press th...

Page 52: ...setting using the left right cursor keys Display Description Setting range Initial setting DB_100Hz CPY Developing bias clock frequency 2 to 255 26 DB_Duty CPY Developing bias clock frequency 1 to 99...

Page 53: ...No appears U157 Checking clearing the developing drive time Description Displays the developing drive time for checking or changing a figure Purpose To enter the developing drive time again after carr...

Page 54: ...specified number of sheets for fusing control have passed Number of sheets for fusing control The number of sheets to be counted for switching from printing operation temperature 1 to printing operati...

Page 55: ...ases in increments of 1 If there is an LED corresponding to the key pressed the LED will light 4 When all keys are pressed all LEDs will light for 10 s Completion Press the stop clear key The indicati...

Page 56: ...automatic adjustment input the target values using U425 Setting the target Method 1 Run U425 Setting the target to input the target values 2 Set the original to be used for adjustment on the platen 3...

Page 57: ...to 200 0 N4 75 L Black N4 75 L target 0 0 to 100 0 N4 75 a Black N4 75 a target 200 0 to 200 0 N4 75 b Black N4 75 b target 200 0 to 200 0 N1 25 L Black N1 25 L target 0 0 to 100 0 N1 25 a Black N1 2...

Page 58: ...nance item No appears U905 Checking clearing counts by the DP Description Displays the counts of the DP Purpose To check the use of the optional DP Method Press the enter key The count will be display...

Page 59: ...y A selection item appears 2 Select Execute using the up down cursor keys If the counter has been cleared Execute is not displayed 3 Press the enter key The accounting counter is cleared Completion Pr...

Page 60: ...ne administrator In this machine system settings default settings can be changed 1 Executing a system setting item Press the System Menu Counter key Start Executing a system setting item Select an set...

Page 61: ...default setting and press the enter key 3 Select the new default setting and press the enter key Registering destination E mail addresses under one touch keys 1 Select Common Setting and press the ent...

Page 62: ...and press the enter key Setting defalt original size 1 Select Common Setting and press the enter key 2 Select Orig Paper Set and press the enter key 3 Select Def Org Size and press the enter key 4 Sel...

Page 63: ...ce setting item Press the System Menu Counter key Start Executing a system setting item Select Service Setting using the up down cursor keys Select an setting item using the up down cursor keys Press...

Page 64: ...Panel ROM Version NVRAM Version Scanner Version Serial No MAC Address Toner Coverage Average Last Page Size Conversion Counter Printed Total Printed Pages Copier Printer FAX Scanned Total Scanned Pag...

Page 65: ...Monochirome AGC gain odd setting value Monochirome AGC gain even result Monochirome AGC gain even setting value Color AGC offset red result Color AGC offset red setting value Color AGC offset green r...

Page 66: ...r most significant byte 32 secod byte 33 third byte 34 least significant byte 35 Optional drawer counter most significant byte 36 secod byte 37 third byte 38 least significant byte 39 DP counter most...

Page 67: ...e 68 secod byte 69 third byte 70 least significant byte 71 51 2 81 2 size most significant byte 72 secod byte 73 third byte 74 least significant byte 75 Other size most significant byte 76 secod byte...

Page 68: ...p IP Address Trap IPX Address Add Paper Low Toner Add Toner Cover Open Paper Jam All Other Errors Network Status 1 POP3 Status Check Interval User 1 User Profile1 POP Port Number POP Server Name POP3...

Page 69: ...hen dew condensation on the drum occurs Procedure 1 Select Drum Refresh using cursor up down keys and press the enter key 2 Select Yes using the left select key Drum surface refreshing will start and...

Page 70: ...n Set to take advantage of our remote diagnosis system Procedure 1 Select Remote Diag Set using up down cursor keys and press the enter key 2 Select Off or On using the up down cursor keys and press t...

Page 71: ...p output tray front top cover front cover or pull the cassette out To remove original jammed in the optional DP open the DP original cover Paper misfeed detection can be reset by opening and closing t...

Page 72: ...1 5 2 2 Paper misfeed detection conditions Registration sensor Exit sensor Figure 1 5 2 Service Manual Y104230 6...

Page 73: ...oes not turn on within 1160 ms of the feed clutch turning on the clutch is then successively turned off for 1 s and turned back on once but the sensor again fails to turn on within 1160 ms The registr...

Page 74: ...with the feed clutch Paper in the optional cas sette is extremely curled Check if the feed roller of the optional cassette is deformed Defective registration sen sor Check if the feed clutch malfunct...

Page 75: ...istration clutch malfunctions Electrical problem with the registration clutch Check if the upper and lower registration rollers contact each other Check if the lower exit roller and exit pulleys con t...

Page 76: ...pulleys con tact each other Check if the upper exit roller and exit pulleys con tact each other Check if YC8 7 on the engine PWB remains low when the regis tration sensor is turned on and off If it d...

Page 77: ...d The forwarding 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 Remov...

Page 78: ...he backup memory data Defective backup RAM Defective main PWB or engine PWB Defective main PWB or engine PWB Poor contact in the connector ter minals Defective main PWB or engine PWB Replace the fax c...

Page 79: ...x control PWB Poor contact in the connector ter minals Defective main PWB or operation PWB Poor contact in the connector ter minals Defective main PWB or fax con trol PWB Defective engine PWB Defectiv...

Page 80: ...ter PWB Incorrect shading position Poor contact of the connector ter minals Reinsert the connector Also check for con tinuity within the connector cable If none remedy or replace the cable Replace the...

Page 81: ...or Defective engine PWB KP 5238 Poor contact in the thermistor connector termi nals Thermistor in stalled incorrectly Thermal cutout triggered Heater lamp in stalled incorrectly Broken heater lamp wir...

Page 82: ...Replace the operation PWB and check for correct operation Reinsert the connector Also check for con tinuity within the connector cable If none remedy or replace the cable Replace the operation PWB and...

Page 83: ...then on If the problem cannot be solved replace the process unit After replacing the process unit turn the power switch off and then on If the prob lem cannot be solved replace the waste toner sensor...

Page 84: ...wer switch is turned off and then on again contact the Service Administrative Division If this error occurs again even after the power switch is turned off and then on again contact the Service Admini...

Page 85: ...ck line appears laterally See page 1 5 18 8 One side of the print image is darker than the other See page 1 5 18 9 Black dots appear on the image See page 1 5 19 10 Image is blurred See page 1 5 19 11...

Page 86: ...fective engine PWB E Defective high voltage PWB 2 Exposure lamp fails to light A The connector terminals of the exposure lamp make poor contact B Defective CCD PWB C Defective scanner PWB D Defective...

Page 87: ...ible 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 or deteriorated...

Page 88: ...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 black line ap pear...

Page 89: ...orn 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 conveying section d...

Page 90: ...er 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 storage condit...

Page 91: ...rective measures 1 Misadjusted center line of image printing Readjust the center line of image printing see page 1 6 42 2 Misadjusted scanner center line Readjust the scanner center line see page 1 6...

Page 92: ...ce the power 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 f...

Page 93: ...y 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 Check if YC6 2 on the engine...

Page 94: ...ration sensor 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 shorted or m...

Page 95: ...oller 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 and lower regis...

Page 96: ......

Page 97: ...board Do not touch any PWB containing ICs with bare hands or any object prone to static charge Use only the specified parts to replace the fuser unit thermostat Never substitute electric wires as the...

Page 98: ...y disks near the process unit If the process unit is replaced for some reason the toner installation mode must be run 1 Run maintenance mode U157 to clear the developing drive time 2 Run maintenance m...

Page 99: ...ve 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 cover face down o...

Page 100: ...e 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 snaps and hooks r...

Page 101: ...haft into the D shape hole of the feed roller 1 Remove the 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 and remove the f...

Page 102: ...ove the engine PWB see page 1 6 9 2 Remove the screw 3 Remove the grounding plate 4 Remove the stop ring 5 Remove the MP feed clutch Figure 1 6 7 Removing the MP feed clutch Screw Grounding plate Stop...

Page 103: ...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 Spring Screw Screw...

Page 104: ...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 unit see page 1...

Page 105: ...ee page 1 6 4 2 Remove all twelve connectors from the engine PWB 3 Remove three screws 4 Remove the engine PWB When replacing the PWB with a new PWB remove the EEPROM from the old PWB and mount it to...

Page 106: ...Removing the main controller shield with main PWB Connectors Main controller shield with main PWB Flexible flat cable Screw Screws 4 Remove three connectors 5 Remove the flexible flat cable 6 Remove...

Page 107: ...screws at the back of the main PWB When replacing the PWB with a new PWB remove the EEPROM from the old PWB and mount it to the new PWB Figure 1 6 14 Removing the main PWB Screws Main PWB EEPROM Y104...

Page 108: ...he power supply PWB 4 Remove eight screws 5 Remove the power supply PWB and high voltage PWB Note The high voltage PWB is directly connected to the bias PWB 6 Separate the high voltage PWB from the po...

Page 109: ...WB and high voltage PWB see page 1 6 12 4 Stand the machine with the front side up 5 Remove the connector from the bias PWB 6 Remove five screws 7 Remove the bottom cover 8 Remove two connectors from...

Page 110: ...assette and process unit see page 1 6 2 2 Remove the right cover see page 1 6 4 3 Remove three connectors from the main motor 4 Remove four screws 5 Remove main motor Figure 1 6 17 Removing the main m...

Page 111: ...gine PWB see page 1 6 9 7 Remove wires from wire saddles on the cord cover 8 Remove the screw 9 Remove the cord cover Figure 1 6 18 Removing the cord cover Wire saddles Wire saddle Cord cover Screw Y1...

Page 112: ...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 19 Removing the clutches Stop ring Stop ring Stop ring MP...

Page 113: ...1 6 17 15 Remove four screws 16 Remove the drive unit Figure 1 6 20 Removing the drive unit Screws Drive unit Y104230 6 Sevice Manual...

Page 114: ...nit gear and the machine s drive gear are properly meshed with each other For this rotate the main motor several turns before fusing screws 1 Remove the rear cover see page 1 6 3 2 Remove the right an...

Page 115: ...1 6 19 6 Remove two screws 7 Open and split the fuser unit Figure 1 6 22 Splitting the fuser unit Screw Screw Fuser unit Y104230 6 Sevice Manual...

Page 116: ...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 separation claw springs...

Page 117: ...can prevent proper fusing of toner on paper When refitting the heater lamp direct the short distance side from the projection in the middle of the lamp facing the machine s left side 1 Remove and spl...

Page 118: ...time until it cools down 1 Remove and split the fuser unit see page 1 6 18 2 Remove the heater lamp see page 1 6 22 3 Press the lamp A holder away from the heat roller Pull up both heat R bush and he...

Page 119: ...1 6 23 4 Remove the heat gear Z33 heat R bush and heat L bush from the heat roller Figure 1 6 26 Removing the heat roller Heat gear Z33 Heat R bush Heat L bush Heat roller Y104230 6 Sevice Manual...

Page 120: ...d 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 screw 5 Remove the thermistor Figure 1 6 27 Removing the thermisto...

Page 121: ...ermal 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 two screws 5 Remove the thermal cutout Figure...

Page 122: ...mmediately after the machine 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 unit Press roll...

Page 123: ...e the speaker see page 1 6 10 3 Remove five connectors and two flexible flat cables from the scanner PWB 4 Remove five screws and then remove the scanner PWB Screws Screws Screw Scanner PWB Connectors...

Page 124: ...1 6 28 4 Remove two screws 5 Slide the scanner unit and then remove the scanner unit Scanner unit Screws Figure 1 6 31 Removing the scanner unit Service Manual Y104230 6...

Page 125: ...plate 3 Remove each two screws and then remove the right and left scanner stays Figure 1 6 32 Removing the right and left stays 4 Remove four connectors 5 Remove six screws and then remove the LSU sh...

Page 126: ...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 Figure 1 6 34 R...

Page 127: ...1 6 31 Eraser lamp 9 Remove the eraser lamp Figure 1 6 35 Removing the eraser lamp Y104230 6 Sevice Manual...

Page 128: ...he holes and then remove the operation unit Hook Hole Hole Operation unit Hook Figure 1 6 36 Removing the operation unit 2 Remove two screws and then remove the original holder cover Screws Original h...

Page 129: ...lexible flat cable from the ISU PWB 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 care not to lose th...

Page 130: ...verter PWB 3 Remove the screw and then remove the inverter PWB Screw Connectors Inverter PWB ISU unit ISU unit Exposure lamp mount Hook Figure 1 6 40 Removing the inverter PWB 4 While unhooking the ho...

Page 131: ...amp 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 42 Removing the exposure lamp...

Page 132: ...6 32 2 Remove the exposure lamp see page 1 6 34 3 Unhook two mirror A holders and then remove the scanner mirror A Scanner mirror A Scanner mirror A Hook Mirror A holder Scanner mirror A Hook Mirror A...

Page 133: ...rom the scanner PWB Figure 1 6 44 Removing the scanner motor 1 5 Remove two screws and then remove two grounding plates Figure 1 6 46 Removing the scanner motor 3 Connector Scanner PWB Screws Scanner...

Page 134: ...Scanner shaft Figure 1 6 48 Removing the scanner motor 5 Figure 1 6 47 Removing the scanner motor 4 9 Remove the stopper ring and then detach the scanner shaft Detach the shaft taking care to tilt it...

Page 135: ...lamps 10 Remove the cable from the cable clamps 11 Remove four screws and then remove the scanner motor mount with scanner motor Figure 1 6 49 Removing the scanner motor 6 12 Remove the screw and then...

Page 136: ...e see page 1 6 2 2 Unlatch 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 51 Removing the...

Page 137: ...ging the value by 1 moves the leading edge by 0 254 mm Press the start key to output a test pattern Printing cannot be stopped until the preset number of sheets is printed Lead Edge Adj1 Leading edge...

Page 138: ...p down cursor keys After adjusting the MP tray adjust the drawer VTC Cas 1 Center line from the drawer VTC MPT Center line from the MP tray VTC Cas 2 Center line from the optional drawer Press the sta...

Page 139: ...maller the amount of slack The new setting is stored Select the item to be adjusted using up down cursor keys Is the leading edge missing or varying randomly copy example 1 Is the copy paper Z folded...

Page 140: ...Enter maintenance mode Enter 065 using up down cursor keys Yes No Start End Press the system menu counter key Place an original and press the start key to make a test copy Printing cannot be stopped u...

Page 141: ...t cursor key For copy example 2 decrease the value using the left cursor key Press the enter key The new setting is stored Press the enter key Select Sub Scan Adj auxiliary scanning direction using up...

Page 142: ...s Press the enter key Press the system menu counter key Place an original and press the start key to make a test copy Printing cannot be stopped until the preset number of sheets is printed Press the...

Page 143: ...u counter key Place an original and press the start key to make a test copy Printing cannot be stopped until the preset number of sheets is printed Is the scanner center line correct Press the enter k...

Page 144: ...No Start Enter maintenance mode Enter 403 using up down cursor keys Press the enter key A Margin Scanner left margin B Margin Scanner leading edge margin C Margin Scanner right margin D Margin Scanner...

Page 145: ...he preset number of sheets is printed Yes No Start End Press the back key to exit maintenance mode Is the image correct Enter 070 using up down cursor keys Press the system menu counter key Setting ra...

Page 146: ...copy example 1 decrease the value using left cursor key For copy example 2 increase the value using the right cursor key Press the system menu conter key Press the back key to exit maintenance mode P...

Page 147: ...not be stopped until the preset number of sheets is printed Is the image correct Setting range 42 to 32 Initial setting 0 Changing the value by 1 moves the copy image by 0 293 mm Press the enter key T...

Page 148: ...and make a test copy Printing cannot be stopped until the preset number of sheets is printed Yes No Start End Press the system menu counter key For copy example 1 increase the value using the right cu...

Page 149: ...r Yes No Start Enter maintenance mode Enter 404 using up down cursor keys Press the enter key A Margin DP left margin B Margin DP leading edge margin C Margin DP right margin D Margin DP trailing edge...

Page 150: ......

Page 151: ...rowser displaying COMMAND CENTER After completing the firmware upgrading restart the web browser to connect to COMMAND CENTER as necessary Procedure 1 Turn the power switch off and disconnect the powe...

Page 152: ...er 3 Remove the DIMM from the DIMM slot on the main PWB 4 Insert the new DIMM into the DIMM slot on the main PWB Insert the DIMM securely all the way into the slot If the power switch is turned on whe...

Page 153: ...ipulated 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 pages Figur...

Page 154: ...MP feed clutch Registration sensor Registration clutch Engine PWB Main motor EXITN MOTORN REGDRN RESIT PAPERN MPFDRN FEDDRN HANDSN YC7 7 YC8 5 YC5 2 YC4 1 YC9 2 YC4 9 YC6 2 YC8 7 1 MP feed roller 3 Lo...

Page 155: ...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 Lower registratio...

Page 156: ...der 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 pulley Scanner gea...

Page 157: ...11 10 YC11 11 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 PWB Engine PWB Main PWB Inverter PWB Exposure lamp ISU unit Scanner unit CCD PWB Original Scan...

Page 158: ...flection by the three mirrors and through the ISU lens to the CCD image sensor on the CCD PWB The CCD image sensor scans one row of the image in the main scan direction converts it to electric signals...

Page 159: ...details on the machine s electrophotography system 1 Electrophotographic cycle The electrophotography system of the machine performs a cyclic action made of six steps as follows Each step is technical...

Page 160: ...ain 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 0 MAG gear Z24...

Page 161: ...river 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 like water alcoho...

Page 162: ...en a uniform positive corona charge dispersed by the main charger wire Due to high voltage scorotron charging the charging wire can get contaminated by oxidization after a long run Therefore it must b...

Page 163: ...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 are housed in the scanner u...

Page 164: ...or 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 mirror Bends the v...

Page 165: ...istance 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 Note that the...

Page 166: ...th the AC weighted positive DC power source Toner on the developing roller is given a positive charge The positively charged toner is then attracted to the areas of the drum which was exposed to the l...

Page 167: ...nsfer 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 thickness of pape...

Page 168: ...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 been fused from being wound...

Page 169: ...user 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 Thermistor Exit pull...

Page 170: ...rvoir Figure 2 1 18 Drum cleaning and erasing static charge After the drum is physically cleaned it then must be cleaned to the electrically neutral state This is necessary to erase any residual posit...

Page 171: ...WB 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 Waste toner sensor PWB Eraser...

Page 172: ...2 2 2 Scanner unit 1 Operation PWB 2 CCD PWB 3 Scanner PWB 4 Inverter PWB 5 Scanner home position sensor 6 Scanner motor 7 Exposure lamp Figure 2 2 2 Scanner unit 2 4 6 3 5 7 1 Service Manual Y104230...

Page 173: ...t YS4 CODE DIMM YS1 SDRAM U14 15 SDRAM DIMM slot YS2 FAX control PWB YC1 Compact Flash socket YC2 Font ROM U12 Transceiver U4 6 8 10 RTC U11 Latch U5 7 9 Scanner I F YC6 Laser scanner unit YC8 Paralle...

Page 174: ...U29 YC7 YC13 YC1 U26 YC8 1 20 1 1 13 1 1 1 5 1 1 38 50 A1 B1 A30 B30 20 9 8 YC2 U14 U15 U34 X8 X10 U11 YS5 X3 X1 U35 YC9 U2 U40 X4 U27 U1 U22 X7 YC5 X6 U21 YC4 U5 U10 U8 U7 U6 U9 U4 YS1 YS2 U12 U20 U...

Page 175: ...ta bus D5 A27 D3 O Data bus D3 A28 D1 O Data bus D1 A29 GND Ground A30 NC Not used B1 NC Not used B2 TXDREQ I TXDREQ signal B3 3 3 V O 3 3 V DC power supply B4 A15 O Address bus A15 B5 A14 O Address b...

Page 176: ...sed 25 CD2n I CD2 signal 26 CD1n I CD1 signal 27 D11 O Data bus D11 28 D12 O Data bus D12 29 D13 O Data bus D13 30 D14 O Data bus D14 31 D15 O Data bus D15 32 CE2n O CE2 signal 33 VS1n O VS1 signal 34...

Page 177: ...US I VBUS signal 2 DATA O DATA signal 3 DATA O DATA signal 4 GND Ground 1 TXOP O TXOP signal 2 3 3 V O 3 3 V DC power supply 3 TXON O TXON signal 4 RXIP I RXIP signal 5 3 3 V O 3 3 V DC power supply 6...

Page 178: ...PDMASKN I PDMASKN signal 13 SBSY I SBSY signal 14 SDIR I SDIR signal 15 EGRN I EGRN signal 16 SGND Ground 17 RSTN I RSTN signal 18 SGND Ground 19 OVSYNC I OVSYNC signal 20 SGND Ground 1 SGND Ground 2...

Page 179: ...DR 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 PWB CPU U1 EEPROM U5 Toner sensor Cass...

Page 180: ...4 Engine PWB silk screen diagram YC11 YC15 2 1 2 1 3 1 10 1 13 1 10 1 3 1 1 16 1 15 3 1 3 1 1 7 5 1 2 1 20 1 5 1 YC10 YC13 YC14 YC7 YC8 YC6 YC9 YC4 YC3 YC2 YC5 YC16 YC1 U3 U6 U1 U5 U7 X1 YC12 Service...

Page 181: ...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 1 2 3 2 3 1...

Page 182: ...alternating plus and negative current and detects the zero crosses This detector derives the resultant ZCROSS signal at its pin 20 of the engine CPU U1 Since abrupt change in the current flow can be...

Page 183: ...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 those variati...

Page 184: ...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 Heater lamp turn on...

Page 185: ...rol 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 PLGRDYN does not...

Page 186: ...2 PFSEN I Paper feeder control signal 3 PFPER I Paper feeder control signal 4 PFCLK O Paper feeder control signal 5 PFMDRN O Paper feeder control signal 6 PGND Ground 7 5 V O 5 V DC power supply 8 MRD...

Page 187: ...8 DPCOVSWIN I DPSSW1 On Off 9 OPSWIN I DPSSW2 On Off 10 CCDSLEPN O CCD sleep signal 1 MOTA O OCM drive control signal 2 MOTNA O OCM drive control signal 3 MOTB O OCM drive control signal 4 MOTNB O OC...

Page 188: ...2 3 16 Connector Pin No Signal I O Description YC14 Connected to the eraser lamp 1 ERASPW O 24 V DC power supply 2 ERASERN O Eraser lamp On Off 3 PGND Ground Service Manual Y104230 6...

Page 189: ...tection 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 PC1 Photo Triac...

Page 190: ...4 C5 C101 C102 YC4 YC1 YC2 D101 D1 D102 Q1 Q20 Q502 Q522 F2 YC3 C103 Q122 Q121 T1 L1 L2 TRA1 NTC1 L N PC4 PC3 PC2 PC5 PC1 C104 C5 C101 C102 YC4 YC1 YC2 D101 D1 D102 Q1 Q20 Q502 Q522 F2 100 V 200 V Fig...

Page 191: ...CROSS SLEEPN High voltage PWB Power supply PWB 5V 24V2 24V3 FET YC301 YC305 YC302 YC303 YC304 SW301 T301 VR301 U301 1 3 A1 B1 A12 B12 1 1 2 16 1 15 Figure 2 3 11 Bias PWB circuit block diagram 2 3 4 B...

Page 192: ...ansfer roller High voltage output circuit FAN HEATN SLEEPN Control and driver circuit FET 2 3 5 High voltage PWB The high voltage PWB contains the high voltage output circuit interlock switch circuit...

Page 193: ...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 the power supply...

Page 194: ...SN based on the clock for driving the CCD sensor CCDCLK supplied from the main PWB through the scanner PWB The image signals obtained from scanning of an original are divided into three analog signals...

Page 195: ...Ground 12 CCDCLK I CCD clock signal 13 GND Ground 14 CCDCLKN I CCD clock signal 15 GND Ground 16 GND Ground 17 GND Ground 18 CCDG O O Image data G green signal analog 19 GND Ground 20 CCDB E O Image...

Page 196: ...R85 K18 D1 2 1 R70 Q3 1 2 3 R67 K17 R80 K23 K41 TP206 D28 LEDG TP175 K21 TP200 TP195 D16 LEDG D8 2 1 R82 K16 K30 K36 TP171 TP157 TP166 K4 D10 LEDG TP212 R97 K44 D17 LEDG Q9 1 2 3 TP205 Q15 4 1 3 2 5 6...

Page 197: ...ply 4 FPRST I FPRST signal 5 PANTXD I PANTXD signal 6 PANRXD O PANRXD signal 7 PANRTS I PANRTS signal 8 PANCTS O PANCTS signal 9 3 3 V I 3 3 V DC power supply 10 CHECK I CHECK signal 11 TEMP O Tempera...

Page 198: ...n switch MOTA MOTNA MOTB LAMP LAMPHI LAMPLOW HPSWN MOTNB ISUMOTA ISUMOTNA ISUMOTB ISUMOTNB 2 3 8 Scanner PWB The scanner PWB consists of scanner driver circuit Q1 to Q5 and exposure lamp driver circui...

Page 199: ...YNC HPSWN MOTA MOTNA MOTB MOTNB MOTORN MHVDR1 HVCLK FEDDRN REGDRN RESIT EXITN ERASERN RTHVDR THVDR PSEL1 HVISEL YC3 2 YC10 4 YC11 1 2 3 4 YC4 9 YC8 10 YC7 10 MHVDR2 YC7 8 YC4 1 YC6 2 YC8 7 YC7 7 YC14...

Page 200: ...SYNC HPSWN MOTA MOTNA MOTB MOTNB MOTORN MHVDR1 HVCLK FEDDRN REGDRN RESIT EXITN ERASERN RTHVDR THVDR PSEL1 HVISEL YC3 2 YC10 4 YC11 1 2 3 4 YC4 9 YC8 10 YC7 10 MHVDR2 YC7 8 YC4 1 YC6 2 YC8 7 YC7 7 YC14...

Page 201: ...ms 116 ms OVSYNC HPSWN MOTA MOTNA MOTB MOTNB MOTORN MHVDR1 HVCLK FEDDRN REGDRN RESIT EXITN ERASERN RTHVDR THVDR PSEL1 HVISEL YC3 2 YC10 4 YC11 1 2 3 4 YC4 9 YC8 10 YC7 10 MHVDR2 YC7 8 YC4 1 YC6 2 YC8...

Page 202: ...OTNB ISUMOTNA ISUMOTB 5V TNFULL SGND PGND 24V3 FAN2POW 1 2 YC1 YC2 YC2 YC3 YC4 YC5 YC301 YC304 YC302 YC303 YC9 YC7 YC8 YC3 YC12 YC16 1 2 3 YC13 YC5 YC6 YC4 YC10 YC11 YC7 YC8 YC6 YC13 YC14 1 2 3 1 2 3...

Page 203: ...UPDATINGSTATUS DATE UPDATEDPAGES PAGES CODE 09 2005 1ST EDITION 203 Y104230 6...

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