Kyocera DU-300 Service Manual
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Kyocera DU-300 Service Manual

Kyocera DU-300 Service Manual

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DU-300/301
SERVICE
MANUAL
Published in July 2005
3JZ70763
Revision 3

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Summary of Contents for Kyocera DU-300

  • Page 1 DU-300/301 SERVICE MANUAL Published in July 2005 3JZ70763 Revision 3...
  • Page 2 Version history Version Data Replaced pages Remarks 30-Apr-2003 14-May-2003 Contents, 1-3-2, 1-4-2, 1-4-5, 1-4-6, 1-5-5, 1-5-10, 2-1-1, 2-3-3 8 July 2005 1-1-1, 1-4-4, 1-4-5, 1-4-6, 1-5-7, 1-5-8, Combined: 1-5-11, 2-1-2, 2-3-1, 2-3-2, 2-3-3, 2-3-4, duplexer (3JZ) for 16/24 ppm printer 2-3-5, 2-4-1, 2-4-2...
  • Page 3 Safety precautions This booklet provides safety warnings and precautions for our service personnel 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 with the warnings and precautions described here before engaging in maintenance activities.
  • Page 4 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.
  • Page 5 1. Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current..................... •...
  • Page 6 2. Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
  • Page 7 • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself....................... • Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a cable cover or other appropriate item.
  • Page 8 This page is intentionally left blank.

  • Page 9: Table Of Contents

    3H2/3JZ-3.0 CONTENTS 1-1 Specifications 1-1-1 Specifications ............................1-1-1 1-1-2 Parts names and their functions......................1-1-2 (1) Parts names ........................... 1-1-2 1-1-3 Machine cross section.......................... 1-1-3 1-1-4 Drive system ............................1-1-4 (1) Drive system ........................... 1-1-4 1-2 Handling Precautions 1-2-1 Installation environment ........................1-2-1 1-3 Installation 1-3-1 Unpacking and installation ........................
  • Page 10 3H2/3JZ This page is intentionally left blank. 1-1-2...

  • Page 11: Specifications

    3H2/3JZ-3.0 1-1-1 Specifications Loadable paper sizes ..... ISO A4 (210 × 297 mm) JIS B5 (182 × 257 mm) ISO A5 (148 × 210 mm) ISO C5 (162 × 229 mm) ISO B5 (176 × 250 mm) " × 11") Letter (8 "...

  • Page 12: Parts Names And Their Functions

    3H2/3JZ 1-1-2 Parts names and their functions (1) Parts names Figure 1-1-1 1 Duplexer drawer 2 Rear unit 3 Positioning pin 4 Interface connector 5 Top cover 6 Rear unit lever 1-1-2...

  • Page 13: Machine Cross Section

    3H2/3JZ 1-1-3 Machine cross section Paper path Paper path (Optional unit) Figure 1-1-2 Machine cross section 1 Vertical path section 2 Lower paper path section 3 Upper paper path section 1-1-3...

  • Page 14: Drive System

    3H2/3JZ 1-1-4 Drive system (1) Drive system ⁄ ‹ › ¤ › ‡ Œ „ ´ ‚ fi fl ‚ — & Á Á Á Á ‰ · ¨ ˇ ¨ Figure 1-1-3 Drive system 1 Conveying roller 3 $ Belt S2M 308 ‡...

  • Page 15: Installation Environment

    3H2/3JZ 1-2-1 Installation environment 1. Installation location • Avoid direct sunlight or bright lighting. Ensure that the photoconductor will not be exposed to direct sunlight or other strong light. • Avoid extremes of temperature and humidity, abrupt ambient temperature changes, and hot or cold air directed onto the machine.
  • Page 16 3H2/3JZ This page is intentionally left blank. 1-2-2...

  • Page 17: Installation Procedure

    3H2/3JZ 1-3-1 Unpacking and installation (1) Installation procedure Unpacking the machine 1. Unpack the package of duplexer and check that the contents are sufficient. 1 Duplexer 2 Operation guide Figure 1-3-1 1-3-1...
  • Page 18 3H2/3JZ Attaching the duplexer 1. Pull out the rear unit. 2. Place the printer on top of the duplexer. Rear unit Printer Duplexer Figure 1-3-2 3. Connect the power cord to the printer and secure it to the duplexer. 4. Connect the printer cable to the printer and pass it through the opening in the duplexer.

  • Page 19: Paper Misfeed Detection

    3H2/3JZ 1-4-1 Paper misfeed detection (1) Paper misfeed indication When the sensor in the duplexer (vertical path sensor, switchback sensor, duplexer refeed sensor) cannot be turned ON or OFF because the conveying distance of paper does not reach the specified value even if the switchback motor or the paper refeed motor is driven by the specified number of pulses while printing on 2 sides, it is judged that paper misfeed occurred in the duplexer and the paper misfeed indication is displayed on the operation panel of the printer and the printer operation will be stopped.

  • Page 20: Correcting A Paper Misfeed

    3H2/3JZ (3) Correcting a paper misfeed If paper misfeed occurs with the duplexer, reset all conditions to the original state by removing jammed paper by means of following methods; pulling out the rear unit, opening the top cover and pulling out the duplexer drawer, and reset the paper misfeed indication by closing the rear unit, top cover, and duplex drawer and then printer will resume its operation.
  • Page 21 3H2/3JZ 5. Pull out the duplex drawer. Duplex drawer Figure 1-4-4 Correcting a paper misfeed (3) 6. Remove the jammed paper. 7. Close the top cover, rear unit, and duplex drawer. The printer automatically warms up, goes on-line, and continues printing. Figure 1-4-5 Correcting a paper misfeed (4) 1-4-3...

  • Page 22: Self-Diagnosis

    3H2/3JZ-3.0 1-4-2 Self-diagnosis (1) Self-diagnostic function The printer is equipped with a self-diagnostic function. When a problem is detected, the printer stops printing and an error message is displayed on the operation panel. An error message consists of a message prompting contact to service personnel, total print count, and a four-digit error code (2 digits for F0 only) indicating the type of the error.

  • Page 23: Electrical Problems

    3H2/3JZ-3.0 1-4-3 Electrical problems Problem Causes Check procedures/corrective measures Defective top cover switch. Check to see if the level at pin YC10-1* /YC3-5* connector on Even if the top cover the duplexer PWB changes to H or L when top cover switch is is closed, the mes- pressed.
  • Page 24 3H2/3JZ-3.0 Problem Causes Check procedures/corrective measures Defective vertical path If the level at pin YC6-1* /YC7-1* connector on the duplexer The message “Pa- sensor. PWB remains high when the actuator of the vertical path sensor is not operating, replace the vertical path sensor. per Jam Du- plexer”...

  • Page 25: Precautions For Assembly And Disassembly

    3H2/3JZ 1-5-1 Precautions for assembly and disassembly (1) Precautions • Be sure to turn the main switch off and disconnect the power plug before starting disassembly. • When handling PWBs, do not touch connectors with bare hands or damage the board. •...

  • Page 26: Duplexer

    3H2/3JZ 1-5-2 Duplexer (1) Detaching and refitting the rear unit Procedure 1. Pull out the rear unit. 2. Remove the four screws and then remove the rear unit. Rear unit Screws Screws Figure 1-5-1 1-5-2...

  • Page 27: Detaching And Refitting The Right Cover

    3H2/3JZ (2) Detaching and refitting the right co ver Procedure 1. Remove the duplexer drawer from the duplexer. 2. Remove the one screw and then remove the grounding plate. 3. Remove the two screws and then remove the right cover. Screw Grounding plate Right cover...

  • Page 28: Detaching And Refitting The Left Cover

    3H2/3JZ (3) Detaching and refitting the left cover Procedure 1. Remove the duplexer drawer from the duplexer. 2. Remove the five screws and then remove the left cover. Screws Left cover Screw Left cover Screw Screw Figure 1-5-3 1-5-4...

  • Page 29: Detaching And Refitting The Conveying Roller 1 And 2

    3H2/3JZ (4) Detaching and refitting the con veying roller 1 and 2 Follow the procedure below to check or replace the conveying roller 1 and 2. Procedure 1. Remove the duplexer drawer from the Middle upper guide duplexer. 2. Remove the five screws and then remove the Screws Screws middle upper guide.

  • Page 30: Detaching And Refitting The Conveying Roller 3

    3H2/3JZ (5) Detaching and refitting the con veying roller 3 Follow the procedure below to check or replace the conveying roller 3. Procedure 1. Remove the duplexer drawer from the duplexer. 2. Remove the belt S2M 318 from the con veying Stopper ring Conveying roller 3 pulley 2C.

  • Page 31: Detaching And Refitting The Duplexer Pwb

    3H2/3JZ-3.0 (6) Detaching and refitting the duple xer PWB Follow the procedure below to check or replace the duplexer PWB. Procedure 1. Remove the duplexer right cover (see page 1- 5-3). 2. Remove all (ten/seven) connectors from the For 16 ppm printer duplexer PWB.

  • Page 32: Detaching And Refitting The Paper Refeed Motor And Switchback Motor

    3H2/3JZ-3.0 (7) Detaching and refitting the paper ref eed motor and switchback motor Follow the procedure below to check or replace the paper refeed motor and switchback motor . Procedure 1. Remove the left and right cover (see page 1- 5-3, 4).
  • Page 33 3H2/3JZ 5. Remove the two connectors. 6. Remove the four screws. Switchback motor 7. Remove the one belt and then remove the switchback motor. Paper refeed motor 8. Remove the two belts and then remove the Belt S2M 128 paper refeed motor. 9.

  • Page 34: Detaching And Refitting The Cooling Fan Motor And Branch Solenoid

    3H2/3JZ (8) Detaching and refitting the cooling fan motor and branc h solenoid Follow the procedure below to check or replace the cooling fan motor and branch solenoid. Procedure 1. Remove the rear unit (see page 1-5-2). 2. Remove four screws and then remove the Screws turn guide.
  • Page 35 3H2/3JZ-3.0 5. Remove the two screws and then remove the cooling fan motor. 6. Remove the one screw and then remove the branch solenoid. Screws Cooling fan motor 7. Check or replace the cooling f a n motor and branch solenoid. 8.
  • Page 36 3H2/3JZ This page is intentionally left blank. 1-5-12...

  • Page 37: Duplexer

    3H2/3JZ 2-1-1 Duplexer Duplexer consists of the following parts and it refeeds the paper after switchback, which is ejected from the printer. The paper with the first side printed after fixing in the printer unit is guided to the vertical path section of the duplexer by the DU flapper activated by the branch solenoid.
  • Page 38 3H2/2JZ-3.0 For 16 ppm printer Duplexer PWB Branch SOLDR YC8-2 solenoid Vertical path sensor SENSOR1 YC6-1 RVOUT1B, 1A RVOUT2B, 2A YC4-1,2,3,4 Switchback motor RFOUT1B, 1A RFOUT2B, 2A YC4-5,6,7,8 SENSOR3 YC3-1 Duplexer SENSOR2 SIDEREGIST YC6-7 YC5-1 refeed Side sensor Paper registration refeed sensor motor...

  • Page 39: Electrical Parts Layout

    3H2/3JZ 2-2-1 Electrical parts layout (1) Electrical parts Figure 2-2-1 Electrical parts 1. Duplexer PWB ..........Controls the input/output of electrical parts in the duplexer. 2. Duplexer refeed sensor ....... Detects the leading edge of paper on the upper paper path. Detects paper misfeed.
  • Page 40 3H2/3JZ This page is intentionally left blank. 2-2-2...

  • Page 41: Duplexer Pwb

    3H2/3JZ-3.0 2-3-1 Duplexer PWB For 16 ppm printer Duplexer PWB Interface EEPDI SENSOR1 - 3 EEPROM connector LEDTRAY EEPDO (U2) SIDEREGIST Sensors 24 V PB System RVOUT1B FRESET reset circuit RVOUT1A Switchback RVPHASE1 (U1) motor Switchback RVOUT2B RVENABLE driver motor RVOUT2A circuit (U7) System...
  • Page 42 3H2/3JZ-3.0 For 16/24 ppm printer Duplexer PWB Interface SENS1 - 3 connector TRY_OP GUIDE Sensors +24V1 EEPROM (U4) M1_OUT1B M1_OUT1A Switchback PH1_A motor Switchback M1_OUT2B ENB_A driver motor System M1_OUT2A circuit (U5) RESET reset circuit +24V1 (U2) M2_OUT1B (U1) Paper PH1_B M2_OUT1A refeed...
  • Page 43 3H2/3JZ-3.0 For 16 ppm printer YC10 Figure 2-3-2 Duplexer PWB silk-screen diagram Connector Pin No. Signal Voltage Description 24 V 24 V DC 24 V DC power input 5 V DC 5 V DC power input Connected Ground Signal ground to the interface connector.
  • Page 44 3H2/3JZ-3.0 Connector Pin No. Signal Voltage Description 24VPB 24 V DC 24 V DC power supply for cooling fan motor FANDR 12/0 V DC Cooling fan motor: Half/full speed Connected to the cooling fan motor. 24 V DC 24 V DC power supply for branch solenoid SOLDR 0/24 V DC Branch solenoid: On/Off...
  • Page 45 3H2/3JZ-3.0 Connector Pin No. Signal Voltage Description 24 V DC 24 V DC power output +24V1 24 V DC 24 V DC power input (via rear unit) Connected +24V1 24 V DC 24 V DC power supply for branch solenoid to the SOLDR 0/24 V DC...
  • Page 46 3H2/3JZ This page is intentionally left blank. 2-3-6...

  • Page 47: Connection Diagram

    3H2/3JZ-3.0 Connection diagram For 16 ppm printer 2-4-1...
  • Page 48 3H2/3JZ-3.0 For 16/24 ppm printer 2-4-2...
  • Page 49 MEMO:...
  • Page 50 MEMO:...

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Du-301

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