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Model CM-P1
(Machine Code: G144/G145)
SERVICE MANUAL
20 July 2005
Subject to Change

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Summary of Contents for Aficio CM-P1

  • Page 1 Model CM-P1 (Machine Code: G144/G145) SERVICE MANUAL 20 July 2005 Subject to Change...
  • Page 2 PRECAUTIONS In order to prevent accidents and damage to the equipment please read the precautions below before you service the machine. SAFETY WARNING 1. Only qualified service engineers can service this machine. High voltages and lasers inside this product are dangerous. 2.
  • Page 3 SAFETY PECAUTIONS TOXIC MATERIALS This product contains toxic materials that could cause illness if ingested. 1. If the LCD control panel is damaged it is possible for the liquid inside to leak. This liquid is toxic and contact with skin should be avoided. Wash any splashes from eyes or skin immediately and contact your doctor if you get some liquid on your skin.
  • Page 4 8. Ensure that the power sockets and plugs are not cracked or broken in any way. Repair such defects immediately. Take care not to cut or damage the power cable or plugs when moving the machine. 9. Use caution during thunder or lightening storms. Disconnect the machine from the power source when such weather conditions are expected.
  • Page 5 ASSEMBLY/DISAEEMBLY PRECAUTIONS Replace with recommended parts. Take care to note the exact location of parts and correct cable routing before you disassemble any part of the machine. Ensure all parts and cables are replaced correctly. Do the following procedures before you disassemble the printer or replace any parts.
  • Page 6 ADDITIONAL SAFTEY PRECATIONS 1. Be careful with high temperature parts. The fusing unit works at a high temperature. Use caution when working on the printer. Wait for the fusing unit to cool down before disassemble it. 2. Do not put you fingers or hair into the rotating parts 3.
  • Page 7 ESD PRECAUTIONS Certain semiconductor devices can be get damaged by static electricity. Such components are commonly called “Electrostatically Sensitive (ES) Devices”, or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor “chip” components. The techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity.
  • Page 8: Table Of Contents

    TABLE OF CONTENTS 1. INSTALLATION................1-1 1.1 INSTALLATION PROCEDURE ..............1-1 2. PREVENTIVE MAINTENANCE............ 2-1 2.1 PM INTERVALS ..................2-1 3. REPLACEMENT AND ADJUSTMENT ........3-1 3.1 GENERAL PRECAUTIONS...............3-1 3.1.1 SERVICING THE MACHINE ............3-1 3.1.2 RELEASING PLASTIC LATCHES............3-1 3.2 COVERS ....................3-2 3.2.1 FRONT COVER................3-2 3.2.2 BYPASS COVER................3-3 3.2.3 REAR COVER ..................3-4 3.2.4 TOP COVER ..................3-6...
  • Page 9 Jam0 .....................4-2 Jam1 .....................4-2 Jam2 .....................4-3 4.2 CLEARING PAPER JAMS ................4-4 4.2.1 JAM2 (PAPER EXIT AREA) .............4-4 4.2.2 JAM0 (PAPER FEED AREA)............4-6 4.2.3 JAM1 (TONER CARTRIDGE AREA)..........4-7 4.2.4 TIPS TO AVOID PAPER JAMS............4-8 4.3 SAMPLE PATTERN ..................4-9 4.3.1 PRINTING A DEMO PAGE AND CONFIGURATION PAGE ....4-9 4.3.2 PRINTING A CLEANING SHEET ...........4-10 4.4 OPERATION PANEL DISPLAY...............4-10 4.5 PERIODIC DEFECTIVE IMAGE..............4-10...
  • Page 10 4.8.10 PRINTED VERTICAL LINES GET CURVED........4-22 4.9 TONER CARTRIDGE................4-23 4.9.1 TONER CARTRIDGE PRECAUTIONS ..........4-23 4.9.2 REDISTRIBUTING TONER............4-23 4.9.3 TONER CARTRIDGE ERROR MESSAGES ........4-25 4.9.4 TONER CARTRIDE DETAILS ............4-26 4.10 SOFTWARE PROBLEMS ..............4-29 4.10.1 PRINTER DOES NOT OPERATE CORRECTLY 1 ......4-29 4.10.2 PRINTER DOES OPERATE CORRECTLY 2.......4-30 4.10.3 ABNORMAL PRINTING ...............4-31 4.10.4 SPOOL ERROR ................4-31...
  • Page 11 Thermistor.....................6-9 Hot Roller....................6-9 Pressure Roller ..................6-9 Safety Features ..................6-10 Safety Devices..................6-10 6.3.5 LASER SCANNNING UNIT (LSU)..........6-10 6.3.6 TONER CARTRIDGE ..............6-11 6.3.7 NEW AIO DETECTION ..............6-12 6.3.8 TONER END DETECTION.............6-12 6.4 ASIC(SPGP)....................6-13 6.4.1 MEMORY ..................6-13 6.4.2 FLASH MEMORY ................6-13 6.4.3 SDRAM...................6-14 6.4.4 SENSOR INPUT CIRCUIT .............6-15 Paper Empty Sensor................6-15 By-pass Tray Sensor ................6-15...
  • Page 12: Installation

    20 July 2005 INSTALLATION PROCEDURE 1. INSTALLATION 1.1 INSTALLATION PROCEDURE Refer to the Operating Instructions for full installation procedures.
  • Page 13: Preventive Maintenance

    20 July 2005 PM INTERVALS 2. PREVENTIVE MAINTENANCE 2.1 PM INTERVALS The cycle period shown below is for maintenance. Environmental conditions and use will change. The cycle period shown is for reference only. Component Replacement Cycle Done by Pick-up Ass’y 150,000 pages Service Printer...
  • Page 14: Replacement And Adjustment

    20 July 2005 GENERAL PRECAUTIONS 3. REPLACEMENT AND ADJUSTMENT This manual uses the following symbols. : See or refer to  : Screw : Connector: : C-clamp (snap ring) : E- clamp 3.1 GENERAL PRECAUTIONS • Use high caution when you disassemble and reassemble components. •...
  • Page 15: Covers

    COVERS 20 July 2005 3.2 COVERS 3.2.1 FRONT COVER G144R003.WMF G144R002.WMF 1. Pull the cassette [A] out of the printer. 2. Open the front cover [B] and push the toner cartridge down. Then remove it from the machine. G144R005.WMF G144R004.WMF 3.
  • Page 16: Bypass Cover

    20 July 2005 COVERS 3.2.2 BYPASS COVER G144R006.WMF 1. Open the tray assembly [A]. 2. Carefully bend the plastic hinge supports toward the center of the machine [B] to release them from the guide hooks. 3. Pull the by-pass tray [C] outwards from the machine.
  • Page 17: Rear Cover

    COVERS 20 July 2005 3.2.3 REAR COVER G144R031.WMF 1. Remove the 2 x  and remove the option cover assembly [A]. 2. Remove the cover face [B] in the direction of the arrow as shown above. G144R032.WMF...
  • Page 18 20 July 2005 COVERS G144R033.WMF 3. Remove the 2 x  as shown above and snap the rear cover [C] out of the machine.
  • Page 19: Top Cover

    COVERS 20 July 2005 3.2.4 TOP COVER Remove the following before you remove the top cover. : Front Cover : Rear Cover G144R008.WMF 1. Remove the 4 x  as shown above. Then lift the top cover [A] from the machine.
  • Page 20: Right Side Cover

    20 July 2005 COVERS 3.2.5 RIGHT SIDE COVER Remove the following before you remove the right side cover. : Front Cover : Rear Cover : Top Cover G144R010.WMF 1. Remove the 2 x  as shown above 2. Release the top latch [A] and the three bottom latches [B] from the frame assembly in the direction of the arrow.
  • Page 21: Left Side Cover

    COVERS 20 July 2005 3.2.6 LEFT SIDE COVER Remove the following before you remove the left side cover. : Front Cover : Rear Cover : Top Cover G144R011.WMF 4. Remove the 2 x  as shown above 5. Release the top latch [A] and the three bottom latches [B] from the frame assembly in the direction of the arrow.
  • Page 22: Middle Cover

    20 July 2005 COVERS 3.2.7 MIDDLE COVER Remove the following before you remove the middle cover. : Front Cover  : Rear Cover : Top Cover G144R009.WMF 1. Remove the 2 x  from the top of the middle cover [B] (screws are on the inside) 2.
  • Page 23: Exit Roller

    EXIT ROLLER 20 July 2005 3.3 EXIT ROLLER Remove the following before you remove the exit roller. : Front Cover : Rear Cover : Top Cover : Left and Right Side Cover G144R012.WMF 1. Gently pull the gear [A] and remove from the exit roller [B]. 2.
  • Page 24: Engine Shield Assembly And Exit Board

    20 July 2005 ENGINE SHIELD ASSEMBLY AND EXIT BOARD 3.4 ENGINE SHIELD ASSEMBLY AND EXIT BOARD Remove the following before you remove the engine shield and exit board. : Front Cover : Rear Cover : Top Cover : Left and Right Side Cover 3.4.1 ENGINE SHIELD G144R013.JPG Do the following before you remove the engine shield assembly.
  • Page 25 ENGINE SHIELD ASSEMBLY AND EXIT BOARD 20 July 2005 2. Turn the machine on its side and remove the 12 x  from the engine shield assembly [B]. NOTE: All screws must be removes before you can remove the safety shield. 3.
  • Page 26: Exit Board

    20 July 2005 ENGINE SHIELD ASSEMBLY AND EXIT BOARD 3.4.2 EXIT BOARD G144R014.WMF 1. Remove the 2 x  as shown above. 2. Remove the exit board [A]. 3-13...
  • Page 27: Smps

    SMPS 20 July 2005 3.5 SMPS Remove the following before you remove the SMPS. : Front Cover : Rear Cover : Top Cover : Left and Right Side Cover G144R015.WMF G144R016.WMF 1. Unplug one wire [A]. 2. Remove the 3 x  and remove the inlet bracket [B]. 3.
  • Page 28 20 July 2005 SMPS G144R017.WMF 4. Unplug the engine harness [D]. G144R018.WMF 5. Remove 2 x  from the IEEE1284 port and the main PBA [E]. 3-15...
  • Page 29 SMPS 20 July 2005 G144R019.WMF 6. Remove 6 x  and remove the SMPS [F]. NOTE: If you only need to remove the optional memory units or the network card you only need to remove the optional cover. : 3.2.3 3-16...
  • Page 30: Fusing Unit

    20 July 2005 FUSING UNIT 3.6 FUSING UNIT Remove the following before you remove the fusing unit. : Rear Cover NOTE: Do the following procedure if you only want to remove the entire fusing unit assembly. NOTE: Refer to the following sections if you want to remove components from the fusing unit.
  • Page 31: Thermostat

    FUSING UNIT 20 July 2005 3.6.2 THERMOSTAT G144R021.WMF 3. Remove the 2 x . Then remove the thermostat [B]. Both screws have a nut and a bolt. 3-18...
  • Page 32: Fusing Lamp

    20 July 2005 FUSING UNIT 3.6.3 FUSING LAMP G144R022.WMF 4. Remove the 2 x  securing the fusing lamp [C]. Both screws have a nut and a bolt. 5. Slide the fusing lamp [C] out from the hot roller [D] in the direction of the arrow as shown above.
  • Page 33: Stripper Pawls

    FUSING UNIT 20 July 2005 3.6.4 STRIPPER PAWLS G144R049.WMF [A]: Remove the 4 x  securing the fusing unit cover [A]. [B]: Remove the 2 x  securing the guide input [B]. [C]: Disassemble the fusing unit. 3-20...
  • Page 34: When You Reassemble The Fusing Unit

    20 July 2005 FUSING UNIT When you Reassemble the Fusing Unit The 4 x stripper pawls must be put in the correct position before you can reassemble the fusing unit. Do the following procedure before you put the fusing unit back to the fusing unit assembly. 1.
  • Page 35: Note

    FUSING UNIT 20 July 2005 Note. The illustration below shows the stripper pawls in the incorrect position. Note that the stripper pawls are not correctly set into the stripper pawl holder slots. In this condition you cannot replace the fusing unit back to the machine. G144R903.TIF 3-22...
  • Page 36: Thermistor

    20 July 2005 FUSING UNIT 3.6.5 THERMISTOR G144R050.WMF [A]: Unwrap the thermistor harness [A] as shown above. [B]: Remove 1 x  securing the thermistor [B] and remove it 3-23...
  • Page 37: Unplug Fan

    UNPLUG FAN 20 July 2005 3.7 UNPLUG FAN Remove the following before you remove the fan. : Front Cover : Rear Cover : Top Cover : Left and Right Side Cover G144R026.WMF 1. 1 x  from the SMPS. 2. Remove 1 x . Then remove the Fan [A]. 3-24...
  • Page 38: Laser Scanning Unit

    20 July 2005 LASER SCANNING UNIT 3.8 LASER SCANNING UNIT Remove the following before you remove the laser scanning unit. : Front Cover : Rear Cover : Top Cover : Left and Right Side Cover G144R027.WMF 1. Remove one ground wire [A]. 2.
  • Page 39 LASER SCANNING UNIT 20 July 2005 G144R028.WMF 3. Unplug 2 x  [C] as shown above. Then remove the laser scanning unit [B]. NOTE: Do not touch the plastic shield of the laser scanning unit. Clean with a dry tissue if you touch, or, if dust gets on the plastic shield. NOTE: The screw slots on the laser scanning unit are numbered.
  • Page 40: Drive Unit

    20 July 2005 DRIVE UNIT 3.9 DRIVE UNIT Remove the following before you remove the drive assembly. : Front Cover : Rear Cover : Top Cover : Left and Right Side Cover G144R029.WMF 1. Unplug 1 x  from the drive assembly board [A]. 2.
  • Page 41: Transfer Unit

    TRANSFER UNIT 20 July 2005 3.10 TRANSFER UNIT Remove the following before you remove the transfer assembly. : Front Cover : Rear Cover : Middle Cover : Top Cover : Left and Right Side Cover G144R034.WMF G144R035.WMF 1. Remove the 3 x . Then remove the transfer earth [A]. The transfer earth is a yield part to not let unwanted particles get on the transfer roller.
  • Page 42 20 July 2005 TRANSFER UNIT G144R036.WMF 4. Unlatch the transfer roller [E] as shown above. G144R037.WMF 5. Unlatch two bushes (both sides) [F] and two springs (both sides) [G] and remove them. 6. Remove the transfer roller [H] from the machine. 3-29...
  • Page 43: Bypass Tray Unit And Feed Roller

    BYPASS TRAY UNIT AND FEED ROLLER 20 July 2005 3.11 BYPASS TRAY UNIT AND FEED ROLLER Remove the following before you remove the bypass tray and feed roller. : Front Cover : Rear Cover : Middle Cover : Top Cover : Left and Right Side Cover 3.11.1 BYPASS TRAY UNIT G144R039.WMF...
  • Page 44 20 July 2005 BYPASS TRAY UNIT AND FEED ROLLER G144R041.WMF G144R040.WMF 4. Remove feed gear 2 [E] from the machine. 5. Remove feed gear 1 [F] from the machine. NOTE: Feed gear 1 has a bigger bushing than feed gear 2. This will let you tell know which gear is feed gear one and which gear is feed gear two.
  • Page 45: Pick-Up Assembly And Solenoid

    PICK-UP ASSEMBLY AND SOLENOID 20 July 2005 3.12 PICK-UP ASSEMBLY AND SOLENOID Remove the following before you remove the pick-up assembly and solenoid. : Front Cover : Rear Cover : Middle Cover : Top Cover : Left and Right Side Cover 1.
  • Page 46 20 July 2005 PICK-UP ASSEMBLY AND SOLENOID 2. Remove the pick-up assembly [B] as shown G144R044.WMF 3-33...
  • Page 47 PICK-UP ASSEMBLY AND SOLENOID 20 July 2005 G144R045.WMF 3. Disconnect 2 x  from the main board. 4. Remove the 2 x . Then remove the pick-up solenoid [C] and the manual solenoid [D]. (make sure to thread the cables through the frame). G144R046.WMF 5.
  • Page 48: Pick-Up Roller And By-Pass Pick-Up Roller

    20 July 2005 PICK-UP ASSEMBLY AND SOLENOID Pick-up Roller and By-pass Pick-up Roller It is not necessary to disassemble the main cassette if you only want to replace the pick-up roller and/or the by-pass pick-up roller. The following procedures show how to replace these two rollers only.
  • Page 49: By-Pass Pick-Up Roller

    PICK-UP ASSEMBLY AND SOLENOID 20 July 2005 By-pass pick-up roller G144R048.WMF 1. Release the white catch and slide the locking piece as far to the side as possible. 2. Slide the white collar as far to the side as possible. 3.
  • Page 50: Troubleshooting

    20 July 2005 PAPER PATH 4. TROUBLESHOOTING 4.1 PAPER PATH Cassette Manual Feeder LSU(Laser Scan Unit) Transfer Roller G144T001.WMF 1. Paper feed cassette 4. Fusing unit 2. By-pass tray 5. Laser scanning unit 3. Transfer roller 6. Toner cartridge...
  • Page 51: Paper Jam Conditions

    PAPER PATH 20 July 2005 4.1.1 PAPER JAM CONDITIONS Jam0 EXIT Sensor G144T002.WMF The printer feeds paper from the main/optional paper feed unit, or, by-pass tray after it gets the print command. The fed paper passes the paper feed sensor. Jam0 occurs if the sensor is not operated within a certain time.
  • Page 52: Jam2

    20 July 2005 PAPER PATH Jam2 EXIT Sensor G144T004.WMF The paper passes through the paper exit sensor and out of the machine. Jam2 occurs if the trailing edge of the paper does not pass the exit sensor within a certain time of the paper leading edge activating the exit sensor.
  • Page 53: Clearing Paper Jams

    CLEARING PAPER JAMS 20 July 2005 4.2 CLEARING PAPER JAMS Paper can get jammed under the following the conditions. • The tray is loaded incorrectly or overfilled. • The tray has been pulled out during a print job. • The front cover has been opened during a print job. •...
  • Page 54 20 July 2005 CLEARING PAPER JAMS G144T006.WMF 2. Open the rear output tray 3. Loosen the paper if it is caught in the feed rollers. Then gently pull the paper out. 4. Close the rear output tray. Then open and close the front cover. Printing starts again.
  • Page 55: Jam0 (Paper Feed Area)

    CLEARING PAPER JAMS 20 July 2005 4.2.2 JAM0 (PAPER FEED AREA) Do the following procedure to solve this paper jam type. G144T007.WMF 1. Slide out the paper tray unit. 2. Grab the visible edge of the paper and gently pull it out of the paper tray as shown above.
  • Page 56: Jam1 (Toner Cartridge Area)

    20 July 2005 CLEARING PAPER JAMS 4.2.3 JAM1 (TONER CARTRIDGE AREA) Do the following procedure to solve this paper jam type. G144T008.WMF 1. Open the front cover and remove the toner cartridge. G144T009.WMF 2. Gently pull the paper toward you as shown above. 3.
  • Page 57: Tips To Avoid Paper Jams

    CLEARING PAPER JAMS 20 July 2005 4.2.4 TIPS TO AVOID PAPER JAMS Do the following to reduce paper jam occurrences. • Make sure that the adjustable guides are positioned correctly. • Do not overload the tray. Ensure that the paper is below the paper capacity mark on the right inside of the tray.
  • Page 58: Sample Pattern

    20 July 2005 SAMPLE PATTERN 4.3 SAMPLE PATTERN The sample pattern lets you maintain and check the machine for abnormal conditions. 4.3.1 PRINTING A DEMO PAGE AND CONFIGURATION PAGE The demo page and configuration sheet lets you check if the machine operates correctly.
  • Page 59: Printing A Cleaning Sheet

    OPERATION PANEL DISPLAY 20 July 2005 4.3.2 PRINTING A CLEANING SHEET You should print a cleaning sheet if printed images are blurred, faded or smeared. The machine cleans the drum inside the toner cartridge when you print a cleaning sheet. A page with toner debris gets output when you print the cleaning sheet. Make sure you discard this sheet.
  • Page 60: Printout Problems

    20 July 2005 PRINTOUT PROBLEMS 4.6 PRINTOUT PROBLEMS 4.6.1 INCORRECT PRINT POSITION Description: The print job starts when the paper is not in the correct position Cause Solution Defective feed sensor actuator Replace the defective actuator 4.6.2 VERTICAL BLACK LINE AND BAND Description.
  • Page 61: Horizontal Black Bands

    PRINTOUT PROBLEMS 20 July 2005 4.6.4 HORIZONTAL BLACK BANDS Description: Dark or blurry horizontal stripes show periodically on the printout Cause Solution Bad contacts on the toner cartridge high Clean all high voltage terminals on the voltage terminals. toner cartridge and set frame. Remove toner and dust particles.
  • Page 62: Dark/Black Image

    20 July 2005 PRINTOUT PROBLEMS 4.6.7 DARK/BLACK IMAGE Description: Printed image is dark Cause Solution No charge voltage in the engine board. Check the connector that connects the HVPS and the engine board. Charge voltage fault due to bad contact between toner cartridge and cartridge set Clean the high voltage charge terminals.
  • Page 63: Ghost 1

    PRINTOUT PROBLEMS 20 July 2005 4.6.10 GHOST 1 Description: Ghost shows at 75.5 mm intervals of the OPC drum in the printout. Cause Solution Bad contacts caused by unwanted toner Clean all HV contacts. Replace the HVPS particles between the high voltage if the problem stays.
  • Page 64: Stains On Front Of Page

    20 July 2005 PRINTOUT PROBLEMS 4.6.13 GHOST 4 Description: White ghost shows at 32 mm intervals of the OPC drum in the printout. Cause Solution Developer has reached the end of its life. Replace the toner cartridge. Abnormal output from the HVPS. Check the HVPS supply voltage.
  • Page 65 PRINTOUT PROBLEMS 20 July 2005 4.6.17 BLANK PAGE 2 Description: Blank page or several blank page (s) get printed, or, several blank pages get printed when the machine is turned on. Cause Solution Bad ground contacts in the OPC and/or Check if the ground OPC or the OPC toner cartridge.
  • Page 66: Paper Feed Problems

    20 July 2005 PAPER FEED PROBLEMS 4.7 PAPER FEED PROBLEMS 4.7.1 INCORRECT PRINT POSITION Description: The print job starts when the paper is not in the correct position Cause Solution Defective feed sensor actuator Replace the defective actuator 4.7.2 JAM 0 Description: 1) Paper does not exit from the cassette 2) Jam 0 shows when the paper feeds into the printer...
  • Page 67: Jam 2

    PAPER FEED PROBLEMS 20 July 2005 4.7.4 JAM 2 Description: 1) Paper gets jammed in front of, or, inside the fusing unit. 2) Paper gets stuck in the discharge roller and in the fusing unit after it passes through the actuator feed. Cause Solution Jam 2 can show even if the paper is...
  • Page 68: Paper Stays In The Opc Drum

    20 July 2005 PAPER FEED PROBLEMS 4.7.7 PAPER STAYS IN THE OPC DRUM Description: Paper stays rolled in the OPC drum Cause Solution Paper is too thin Use paper supported by the machine. The face of the paper is curled Make sure paper is stored correctly.
  • Page 69: Set Malfunctions

    SET MALFUNCTIONS 20 July 2005 4.8 SET MALFUNCTIONS 4.8.1 ALL LEDS BLINK (FUSING ERROR) Description: All LEDs on the operation panel blink Cause Solution Thermostat, fusing power cable or heat Replace the heat lamp or cable harness, lamp circuit is open or, replace the entire fusing unit if necessary Defective thermostat...
  • Page 70: Fusing Gear Melts (Overheats)

    20 July 2005 SET MALFUNCTIONS 4.8.5 FUSING GEAR MELTS (OVERHEATS) Description: Constant jam when paper enters the fusing unit, or, fusing unit rollers do not turn. 1. Paper constantly gets jammed in the fusing unit. 2. Fusing unit rollers do not turn Cause Solution Fusing lamp, thermostat or thermistor are...
  • Page 71: Power

    SET MALFUNCTIONS 20 July 2005 4.8.9 NO POWER Description: LEDS on the operation panel do not light when the power is turned Cause Solution Check if the power input and SMPS Replace the power supply cord or SMPS. operate correctly. Replace the power or SMPS fuses if necessary.
  • Page 72: Toner Cartridge

    20 July 2005 TONER CARTRIDGE 4.9 TONER CARTRIDGE Make sure you only use toner cartridges approved by the manufacturer. Machine operation is not guaranteed if you use toner cartridges not approved by the manufacturer. 4.9.1 TONER CARTRIDGE PRECAUTIONS Do no expose the toner cartridge to direct light for more than a few minutes. You can temporarily improve the print quality by redistributing the toner if the printed image is light due to low toner supply.
  • Page 73 TONER CARTRIDGE 20 July 2005 G144T011.WMF G144T012.WMF 2. Gently shake the toner cartridge [D] in the direction of the arrow as shown above. Then put the toner cartridge [D] back into the machine again and close the front cover [C]. 4-24...
  • Page 74: Toner Cartridge Error Messages

    20 July 2005 TONER CARTRIDGE 4.9.3 TONER CARTRIDGE ERROR MESSAGES The following table shows error message that show on the LCD. The messages are related to data stored in the EEPROM in the toner cartridge. Error Message Description Solution Toner Low The amount of remaining Replace the cartridge.
  • Page 75: Toner Cartride Details

    TONER CARTRIDGE 20 July 2005 4.9.4 TONER CARTRIDE DETAILS Description Signs Cause and Check and Solution • Printed image is Light image/partially If the image is light, shake the toner blank image light, dirty or not cartridge and try to print again. If the (cartridge has clear.
  • Page 76 20 July 2005 TONER CARTRIDGE • Light or dark black White/Black Spot Toner cartridge rollers are contaminated dots show with unwanted particles if light or dark periodically on the black dots show periodically on the image. image. In this condition do the OPC clean •...
  • Page 77 TONER CARTRIDGE 20 July 2005 • Print out is too light Ghost image and Check the following if the printout is too other contamination or dark, or, partially light, too dark or partially contaminated. contaminated. 1) Check if unwanted matter stays on •...
  • Page 78: Software Problems

    20 July 2005 SOFTWARE PROBLEMS 4.10 SOFTWARE PROBLEMS 4.10.1 PRINTER DOES NOT OPERATE CORRECTLY 1 Description: The printer does not operate in printing mode when the power is turned on. Description Solution Do the self-test mode. Use the menu buttons There are no problems with the machine if the (menu, enter, enter) and print the test page.
  • Page 79: Printer Does Operate Correctly 2

    SOFTWARE PROBLEMS 20 July 2005 4.10.2 PRINTER DOES OPERATE CORRECTLY 2 Description: After receiving the print command there is either no response or the print speed is low. Incorrect machine set-up and not printer malfunction is the cause of this condition. Description Solution Not enough free hard disk space to...
  • Page 80: Abnormal Printing

    20 July 2005 SOFTWARE PROBLEMS 4.10.3 ABNORMAL PRINTING Description: The printer does not work even after you replace the cables, or, strange fonts get printed. Description Solution Parallel port problem with CMOS set-up Make sure ECP (recommended), or SPP is selected in the CMOS (BIOS) set-up.
  • Page 81: Service Program Mode

    20 July 2005 FIRMWARE DOWNLOAD 5. SERVICE PROGRAM MODE 5.1 FIRMWARE DOWNLOAD 5.1.1 DOWNLOAD PROCEDURE There are two ways to upgrade the machine firmware. 1. Command Prompt 2. EWS (Embedded Web Server) Connect the machine to a PC with the parallel “Command Prompt” or through the network for “EWS”...
  • Page 82: Ews (Embedded Web Server) Mode

    FIRMWARE DOWNLOAD 20 July 2005 EWS (Embedded Web Server) mode Program (firmware) for this machine is upgraded by connecting to a PC through a Network. A Command to upgrade the program must be entered. You must save the correct firmware file to the PC. 1.
  • Page 83 20 July 2005 FIRMWARE DOWNLOAD 5. Make sure ‘Upgrade Firmware’ is selected as shown below. If not, select it. G144S902.TIF 6. Select ‘Upgrade Printer Firmware [A] as shown below. Then click the browse button and select the Printer Firmware file you saved in the PC. NOTE: Go to step 9 if you only want to upgrade the ‘Network Firmware’.
  • Page 84: Firmware Rocovery Procedure

    FIRMWARE DOWNLOAD 20 July 2005 9. Make sure ‘Upgrade Firmware’ is selected as shown below. If not, select it. 10. Select ‘Upgrade Network Firmware [B] as shown below. Then click the browse button and select the Network Firmware file you saved in the PC. 11.
  • Page 85: Detailed Descriptions

    20 July 2005 MACHINE OVERVIEW 6. DETAILED DESCRIPTIONS 6.1 MACHINE OVERVIEW 6.1.1 FRONT VIEW G144D001.WMF [A]: Paper output tray [E] Standard paper feed unit [B]: Operation panel [F] Optional paper feed unit [C]: Power switch [G] Bypass tray [D] Paper level indicator [H] Front cover...
  • Page 86: Rear View

    MACHINE OVERVIEW 20 July 2005 6.1.2 REAR VIEW G144D002.WMF [A] Face up door [C] USB port [B] Parallel port [D] Power receptacle...
  • Page 87: Operation Panel

    20 July 2005 MACHINE OVERVIEW 6.1.3 OPERATION PANEL G144D001.WMF The machine has the following buttons on the operation panel. [A]: On line/error [B]: Toner save [C]: Cancel On Line/Error Button The machine is ready to print when this button is green. The machine is experiencing an error such as jammed paper, cover open or empty toner cartridge when this button is red.
  • Page 88: Toner Save Button

    MACHINE OVERVIEW 20 July 2005 Toner Save Button This LED goes on and the toner save mode gets enabled when you press the cancel button 0.5 sec. The LED goes off and toner save mode gets disabled when you press the cancel button again. On Line/Error Button and Toner Save Button The machine experiences internal problems if On Line/Error and Toner Save button LEDs blink at the same time.
  • Page 89: Machine Overview

    20 July 2005 MACHINE OVERVIEW 6.2 MACHINE OVERVIEW 6.2.1 FIRMWARE • The machine firmware controls the printing process 6.2.2 PRINT ENGINE Paper Feed Mechanism The paper feed mechanism consists of the following. 1) 250 sheet paper feed unit. 2) By-pass tray 3) Pick-up rollers, friction pads and feed rollers.
  • Page 90: Electrical Components (Pba)

    MACHINE OVERVIEW 20 July 2005 Electrical Components (PBA) The main control board consists of the following. 1. Main processor ASIC (166MHz SPGPm) 2. Memory parts (Flash Rom, control program and DRAM) 3. Engine interface parts (motor control, fusing unit control, HVPS control, sensors etc) 4.
  • Page 91: System Layout

    20 July 2005 SYSTEM LAYOUT 6.3 SYSTEM LAYOUT EXIT Sensor G144D003.WMF [A] Fusing unit [E] Paper feed sensor [B] Laser scanning unit [F] Paper empty sensor [C] Toner cartridge [G] OPC [D] By-pass tray [H] Paper feed unit...
  • Page 92: Paper Feed Unit

    SYSTEM LAYOUT 20 July 2005 6.3.1 PAPER FEED UNIT The paper feed unit consists of the following. • Standard paper tray unit • Optional paper feed unit • By-pass tray Paper Separation Method Individual sheets get separated in the paper feed unit with the friction pad method. Paper passes over a spring loaded friction pad that separates the sheets of paper when paper gets fed into the machine.
  • Page 93: Transfer Unit

    20 July 2005 SYSTEM LAYOUT 6.3.2 TRANSFER UNIT A PTL (Pre-transfer Lamp) and a transfer roller move toner from the OPC drum onto the paper. The PTL shines light onto the OPC. This reduces the electrical charge on the surface of the OPC drum and improves the transfer efficiency. The transfer roller moves toner from the OPC drum to the paper.
  • Page 94: Safety Features

    SYSTEM LAYOUT 20 July 2005 Safety Features The machine has the following countermeasures to prevent overheating. 1. 1st protection device: Hardware cuts off when the machine temperature gets to 207 C 2. 2nd protection device: Software cuts off when the machine temperature gets to 220 C for 3 seconds 3.
  • Page 95: Toner Cartridge

    20 July 2005 SYSTEM LAYOUT 6.3.6 TONER CARTRIDGE -430V -950V -580V G144D901.WMF [A]: Charging roller [D]: Doctor blade [B]: OPC drum [E]: Supply roller [C]: Developing roller [F]: Transfer roller [The toner cartridge contains the OPC unit and toner unit. The OPC unit consists of the OPC drum and charging roller.
  • Page 96: New Aio Detection

    SYSTEM LAYOUT 20 July 2005 6.3.7 NEW AIO DETECTION A new supply AIO cartridge has a ID chip. The machine knows a new cartridge has been installed when the chip gets detected. When the new cartridge is installed in the machine, the machine automatically detects by the chip that the cartridge is brand-new.
  • Page 97: Asic(Spgp)

    20 July 2005 ASIC(SPGP) 6.4 ASIC(SPGP) • ARM946ES • 32-bit RISC embedded processor core • 6KB instruction cache and 16KB data cache • No tightly coupled memory • Memory protection unit & CP15 control program • Dual bus architecture for bus traffic distribution •...
  • Page 98: Sdram

    ASIC(SPGP) 20 July 2005 6.4.3 SDRAM SDRAM is used for the following. • Swath buffer in printing • Scan buffer in scanning, • ECM buffer in fax receiving • System working memory area • Size: 16MB • Max Frequency: 100MHz 6-14...
  • Page 99: Sensor Input Circuit

    20 July 2005 ASIC(SPGP) 6.4.4 SENSOR INPUT CIRCUIT Paper Empty Sensor The CPU monitors the paper empty sensor (photo interrupter). The printer flashes the red ERROR LED when the paper feed unit is empty. By-pass Tray Sensor Paper in the by-pass tray gets detected by the by-pass sensor (photo interrupter) on the frame.
  • Page 100: Motor Drive Circuit

    ASIC(SPGP) 20 July 2005 Motor Drive Circuit The main motor drives the following. • Paper feed unit • Developing unit • Fusing unit • Exit assembly Software controls the acceleration, constant speed and deceleration. A A3977 driver IC drives the motor. Transfer PWM (Pulse Width Modulation) controls the charging voltage, developing voltage and the transfer voltage.
  • Page 101: Lsu

    20 July 2005 ASIC(SPGP) The LSU consists laser diode and the polygon motor control. The laser diode turns on and the polygon motor is enabled when the printing signal occurs. Hsync occurs when the light sensor detects the beam, and LReady occurs when the polygon motor speed becomes a normal.
  • Page 102: Smps And Hvps

    SMPS AND HVPS 20 July 2005 6.5 SMPS AND HVPS The SMPS and HVPS are on the same board. The SMPS supplies DC power to the system. It takes either 110V or 220V and outputs the +5V and +24VS to the main and other PBAs.
  • Page 103: Hvps (High Voltage Power Supply)

    20 July 2005 SMPS AND HVPS 6.5.1 HVPS (HIGH VOLTAGE POWER SUPPLY) 1. Transfer High Voltage (THV+) • Input voltage : 24 V DC ± 15% • Output voltage : Max +5.0KV ± 5 %, (duty variable, no loading ). 1.2KV ±15% •...
  • Page 104: Developing Voltage (Dev)

    SMPS AND HVPS 20 July 2005 4. Developing Voltage (DEV) • Input voltage : 24 V DC ± 15% • Output voltage: -200V ~ -600V DC ±20V • Output voltage fluctuation range: PWM control • Input contrast of the output stability degree :±5 % or less •...
  • Page 105: Smps (Switching Mode Power Supply)

    20 July 2005 SMPS AND HVPS 6.5.2 SMPS (SWITCHING MODE POWER SUPPLY) This powers the entire system and is assembled by an independent module, so it is possible to use it for common use. It is mounted at the bottom of the set and consists of the AMPS part, which supplies the DC power for driving the system, and the AC heater control part, which supplies the power to fuser.
  • Page 106: Engine

    ENGINE 20 July 2005 6.6 ENGINE 6.6.1 PAPER FEED Pick-up roller drive is controlled by the pick-up solenoid if paper gets fed from the paper tray unit. The on/off of the solenoid is controlled by the general output port or the external output port.
  • Page 107: Specifications

    20 July 2005 GENERAL SPECIFICATIONS SPECIFICATIONS 1.1 GENERAL SPECIFICATIONS Configuration Desktop Paper size A4/Lt Print Resolution Maximum 1200 x 1200 dpi Default 600 x 600 dpi RET Chip Supported Gray Scale Level 128 Gray Print Speed A4-20 ppm Letter-22 ppm Duplex Print Speed Not Supported First Print Speed...
  • Page 108 CONTROLLER 20 July 2005 1.2 CONTROLLER SPGPm 166 MHz Printer Languages Standard PCL6 Auto Emulating Supported Sensing Interfaces Standard IEEE1284, USB 2.0 Memory (1 slot) Standard/Max 16MB/144MB Type SDRAM Font Type-Flash Memory Number- 45 Scalable, 1 Bitmap Network 10/100 Base TX SPEC-2...
  • Page 109 20 July 2005 SOFTWARE SPECIFICATIONS 1.3 SOFTWARE SPECIFICATIONS Windows 95/98/NT4.0/2000/Me/XP Linux OS including Red Hat, Caldera, Debian, Mandrake, Slackware, SuSE, and Turbo Linux Printer driver Compatibility Default Remote Supported control panel USB: Supported Status Network: Supported monitor Parallel: Not supported English, Korean, German, French, Spanish, Italian, Dutch, Languages...
  • Page 110 OPTIONAL UNIT SPECIFICATIONS 20 July 2005 1.4 OPTIONAL UNIT SPECIFICATIONS Paper tray unit Capacity 250 sheets (Life: 150 K) A4, A5, Letter, Legal, Executive, Oficio, Folio, ISO, B5, Media JIS B5 Paper weight 16-24 lb (60-90 g/m²) Memory Memory Supported upgrade Memory type SDRAM...
  • Page 111: Appendix

    20 July 2005 BLOCK DIAGRAM APPENDIX BLOCK DIAGRAM G144X01.WMF...
  • Page 112 CONNECTION DIAGRAM 20 July 2005 CONNECTION DIAGRAM R O M D I M M 0P I N C N 14 N E TW O R K C N 7 ( O P TI O N ) P I N R O M D I M M C N 13 100P I N LSU_CLK...

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G144G145

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