Hitachi UX Twin Nozzle Service Manual
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Hitachi UX Twin Nozzle Service Manual

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Service Manual

HITACHI
UX Twin Nozzle Model
Printer
Revision
Version
February 2017
A

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Summary of Contents for Hitachi UX Twin Nozzle

  • Page 1: Service Manual

    Service Manual HITACHI Printer UX Twin Nozzle Model Revision February 2017 Version...
  • Page 2 [HITACHI IJ Printer Model UX for Dye Ink] TYPE Nozzle Diameter UX-D860W Standard Model Standard Character UX-D 65μm...

  • Page 3: Table Of Contents

    Contents 1. Introduction ································································································ 1-1 1.1 Safety precautions ················································································· 1-1 1.2 Structure of each part in the main body ······················································ 1-10 1.2.1 External views ················································································· 1-10 1.2.2 Main body internal ··········································································· 1-11 1.2.3 Print head ······················································································ 1-12 1.3 Installation ··························································································· 1-13 1.3.1 Power supply wiring ···········································································...
  • Page 4 3. Maintenance of controlling part······································································· 3-1 3.1 Structure of controlling part ···································································· 3-1 3.2 Controller part ····················································································· 3-5 3.2.1 EZJ128 board (controller board) ························································· 3-5 3.2.2 Battery ·························································································· 3-8 3.2.3 LCD ······························································································ 3-10 3.2.4 Touch panel ···················································································· 3-12 3.3 Engine part ···························································································· 3-13 3.3.1 EZJ133 board (MPU board) ································································...
  • Page 5 4.6.1 Pressure Sensor (Nozzle 1) Replacement Procedure ······························· 4-18 4.6.2 Pressure Sensor (Nozzle 2) Replacement Procedure ······························· 4-20 4.7 Circulation Unit Replacement Procedure ···················································· 4-23 4.8 Pump Parts Replacement ······································································· 4-25 4.8.1 Pump Unit Replacement Procedure ······················································ 4-25 4.8.2 Drive unit replacement procedure ························································· 4-28 4.8.3 Pump head replacement ·····································································...
  • Page 6 4.18 Check on Exhaust Duct dripping ····························································· 4-80 4.19 Circulation system cleaning of printer which uses Ethanol-based ink ··············· 4-81 5. Print head related maintenance ···································································· 5-1 5.1 Structure of Print head ············································································· 5-1 5.2 Cable running direction ············································································ 5-2 5.3 Gutter configuration and replacement method ··············································...

  • Page 7: Introduction

    1. Introduction 1.1 Safety precautions Before starting the maintenance and inspection work of this printer, thoroughly read and understand the “safety precautions”. When explaining the product to customers at the time of the installation, fully explain the “safety precautions”. ● Before using the printer, thoroughly read the following safety precautions for optimum printer use. ●...
  • Page 8 SAFETY PRECAUTIONS (Continued) Installation Environment of Printer WARNING ● Ensure that there is no flame- or arc-generating device around the printer. The ink and makeup are both flammable and may cause fire. Fire can be generated by matches, lighters, cigarettes, heaters, stoves, gas burners, welders, grinders and static electricity.
  • Page 9 SAFETY PRECAUTIONS (Continued) Grounding WARNING ● When welding, keep enough space between the IJ printer and the welding work area to prevent the arc from starting a fire. Also, be sure to insulate the print head and IJ printer frame to keep the welding current from flowing to the control section of the printer, and to make a separate ground connection for the printer.
  • Page 10 SAFETY PRECAUTIONS (Continued) Ink and Makeup Handling WARNING ● When charging a refill of ink or makeup, exchanging ink, or otherwise handling ink or makeup, take enough care not to spill ink or makeup. If you spill any ink or makeup by mistake, wipe it off neatly and promptly with wiping paper or something similar.
  • Page 11 SAFETY PRECAUTIONS (Continued) CAUTION ● Since the ink and makeup contain organic solvents, observe the following handling precautions. ①When handling the ink or makeup, wear protective gloves and safety goggles to avoid direct skin contact. If the ink or makeup comes into contact with skin, wash thoroughly with soap and warm or cold water.
  • Page 12 SAFETY PRECAUTIONS (Continued) Main Body Handling WARNING ● Do not insert tweezers, a screwdriver, or any other metal article into the ink ejection hole in the end of the print head. When the printer is ready to print, a high voltage (approximately 6 kV) is applied to the deflection electrode section in the print head.
  • Page 13 Safety Data Sheet (SDS). The SDS can be accesses from the following web site or from our sales office. URL http://www.hitachi-ies.co.jp/ijp ●The ink and makeup, their waste solution, used wiping papers and empty containers are flammable. Waste disposal must comply with appropriate regulations.
  • Page 14 ● Do not attempt to make repairs for any purpose other than operation or maintenance. ● Use Hitachi approved consumables and periodic replacement arts. Using products that are not designated by Hitachi could cause s failure in certain functions. ● A touch panel is employed for data entry to operation screen.
  • Page 15 SAFETY PRECAUTIONS (Continued) AVERTISSEMENT ● Tenir hors de portée du feu. ○L’encre et la composition sont inflammables. ○Tenir la machine hors de portée du feu. ○Nettoyez et séchez immédiatement les projections d’encre et de composition. Soyez prudent lorsque vous manipulez l’encre/la composition ●...

  • Page 16: Structure Of Each Part In The Main Body

    1.2 Structure of each part in the main body 1.2.1 External views (1)External views (2)External views (Rear side) Exhaust duct Connection port Air-purge Connection port 1-10...

  • Page 17: Main Body Internal

    1.2.2 Main body internal Inner cover Makeup cartridge bottle Ink cartridge bottle Makeup reservoir Ink reservoir Lever handle Lever handle Pressure adjusting screw ［Appearance with inner cover removed］ Recovery filter2 Ink filter Recovery filter1 Main ink tank 1-11...

  • Page 18: Print Head

    1.2.3 Print head Print head cover lock thumbscrew Nozzle orifice1 Nozzle orifice2 Charge electrode1 Charge electrode2 Minus deflection electrode1 Plus deflection electrode2 Plus deflection electrode1 Minus deflection electrode2 Gutter1 Gutter2 Note: Meaning of orifice plate lot number Position of 6 A12345 lot number Serial number Nozzle diameter...

  • Page 19: Installation

    1.3 Installation 1.3.1 Power supply wiring ！ Caution •Use the proper plug. Be sure to ground properly. •Locate the equipment near an electrical outlet and arrange so it can be easily disconnected. •Use a power cable that is within the specified range. •Do not bundle the light electrical cable together with the power cable outside the unit so the light electrical signals (connection signals to the various signal connections and external communication connectors) are not affected by noise...
  • Page 20 １ Remove the inlet cover. (Fastening screws x 4) Inlet cover Precautions concerning electrical shock Be sure to unplug the power cable from the electrical outlet before performing work. Be careful not to get shocked when checking with the cover open. ２...

  • Page 21: Installation Procedure

    1.3.2 Installation procedure Perform an installation work of the unit according to the following procedure at the unpacking. Remove Supply port caps of both ink and makeup Supply port cap Supply port cap reservoirs. Makeup reservoir Ink reservoir <NOTE> The Supply port caps are required at IJ printer “Long–term Shutdown”.
  • Page 22 Press “Ink refill” on Replenish the ink in the main ink tank. And fill the ink into the ink circulation routes. <Circulation control> screen. (Replace the solvent with ink) <NOTE 1> Insert the tip of the Printhead into the beaker at Ink refill. <NOTE 2>...

  • Page 23: Maintenance Work

    2. Maintenance work A screen for use in the maintenance work by a service personnel is described. 2.1 Setting of service personnel maintenance mode ● Set service personnel maintenance mode to perform maintenance work by service personnel such as system environment setup. Features of service personnel maintenance mode (differences with user maintenance mode) Function Contents...
  • Page 24 [Service personnel maintenance mode setup procedure] 1 Printing description screen is displayed. LOGIN 2 Press LOGIN. The login user select screen is displayed.
  • Page 25 3 Select any user. The keyboard for inputting the password is displayed. Shift Enter 4 Input password “HIESmmdd” and press Enter. (mm: Month, dd: Day) Example: If date is December 31, 2017, input “HIES1231.” [Caution] The password “HIESmmdd” is a special password to enable the functions which should not be disclosed to the customer.

  • Page 26: System Environment Setup

    2.2 System environment setup ● The setting with respect to the system environment of the IJ printer is performed. ① Ink type ② Cable length ③Ink temperature correction ④ Excitation freq. ⑤ Excitation curve ⑥ Ambient temp. upper lim. ⑦ Ambient temperature lower lim. ⑧...

  • Page 27: Adjustment/Operational Checkout

    2.3 Adjustment/operational checkout When you make adjustment or operation check of EZJ125 board, turn IJP power OFF once, and then remove EZJ 134 board with fixing bracket attached. Before the operation check is started, attach Oscilloscope probes in advance to TP12 (Charge signal) and TP14 (Excitation signal) on EZJ125 board.
  • Page 28 2 Press Excitation adjustment. The excitation adjustment screen is then displayed. 3 Press Automatic adjustment. During automatic adjustment, “in progress” is displayed as the processing status. Proc. status: In progress The excitation voltage is automatically adjusted inside the IJ printer. The excitation voltage is gradually increased, and the adjustment is completed at 360 V ±...
  • Page 29 Main causes of automatic adjustment failure № Cause The connection of the EZJ133 board and EZJ125 board is insufficient. (Nozzle 1) The connection of the EZJ133 board and EZJ134 board is insufficient. (Nozzle 2) The dip switch on the EZJ125 board is incorrectly set.(Nozzle 1) The dip switch on the EZJ134 board is incorrectly set.(Nozzle 2) The connection of the coaxial cable connector for excitation (EZJ125 CN5：...

  • Page 30: Charging Voltage Confirmation

    2.3.2 Charging voltage confirmation ● Voltage for confirmation of charging voltage is output for 3 minutes. ● Be sure to perform this confirmation when performing the board exchange (EZJ125, 133 and 134). ●This confirmation is performed with the IJ printer in “stop” state. 1 Press Adjustment/operational checkout on the maintenance menu.
  • Page 31 3 Measure TP12 of the EZJ125 board and TP3 of the EZJ134 board with an oscilloscope and make sure it is within the range of DC250V ± 15V. For the position of the board and test pins, refer to “3.3.5 EZJ125 board” and “3.3.6 EZJ134 board”. [Waveform of charge voltage confirmation] Charge voltage ←...

  • Page 32: Phase Margin Test

    2.3.3 Phase margin test ● Perform the phase margin test of a nozzle. ● This test is performed to check the following: ① whether or not the nozzle is in a printable state (whether or not clogging is present) and ②...
  • Page 33 3 Select the setting values for print timing, print data and print phase. Setting items for phase margin test № Item Setting Contents value Button Prints each time Start printing is pressed. Print timing input Sensor Prints for each print sensor signal input. The printing conditions are automatically set as described below.
  • Page 34 Example of [Print timing: Sensor] To quit before the process is complete, press Abort. 5 Determination method of test. View the printing results for phases 0 to 15 (f), and if printing is normal within the range of one phase before to one phase after the “print phase which is set at present”, there is no problem. If printing is not normal within the range of one phase before to one phase after the print phase which is set at present, the nozzle may be clogged or ink quality may have deteriorated.

  • Page 35: Auto Phase Gain Adjustment

    2.3.4 Auto phase gain adjustment ● The gain of the auto phase detection voltage is automatically adjusted. ● Perform this adjustment after confirmation that the periphery of a gutter part within the nozzle head is not made dirty with ink or the like and the printing head cover is correctly fixed. ●...
  • Page 36 3 Press Automatic acquisition. During automatic acquisition, “acquisition” is displayed as the processing state. Proc. status: Acquisition Auto-phase detection voltage gain is automatically adjusted in the IJ printer. A target of the auto-phase gain value is about from “20” to “40” . 4 After the completion of the automatic adjustment, when the Back key is pressed, the auto phase detection voltage is output and therefore, confirm the waveform by an oscilloscope.

  • Page 37: Level Sensor Confirmation

    2.3.5 Level sensor confirmation ● The liquid level and the operation of level sensors of the main ink tank, ink reservoir, and makeup reservoir will be confirmed. № Container type Level sensor Too high [OF] Initial level [1] / Sensor [1] Main ink tank Sensor [2] Sensor [3]...
  • Page 38 1 Press Adjustment/operational checkout on the maintenance menu. If Adjustment/operational checkout is not displayed on the maintenance menu, set the service personnel maintenance mode on the login user selection screen. “Adjustment/operational checkout menu” is then displayed. For information on changing to the service personnel maintenance mode, refer to “2.1 Setting of service personnel maintenance mode.”...
  • Page 39 Container Level sensor Undetected Detected type The sensor detected “overflow” The sensor is not detecting Too high [OF] “overflow” level. level. (Abnormal) Initial level [1] / The sensor is not detecting the The sensor detected the level. Sensor [1] level. Main ink tank The sensor is not detecting the...

  • Page 40: Heating Unit Confirmation

    2.3.6 Heating unit confirmation ● The confirmation of heating unit operation is performed. ① Activate/Deactivate the heating unit. ● The ambient temperature and heating unit temperature are displayed. ● Perform this confirmation in a state other than "Ready" state. 1 Press Adjustment/operational checkout on the maintenance menu. If Adjustment/operational checkout is not displayed on the maintenance menu, set the service personnel maintenance mode on the login user selection screen.
  • Page 41 2 Press Heating unit confirmation . The Heating unit confirmation screen is displayed. Adjust./oper. checkout [Stop Com=0 2018.07.07 12:45 <Heating unit confirmation> Ambient temperature : 10 ( ) Heating unit temp. Nozzle2 : 12 ( )/Deactivated Heating unit temp. Nozzle1 : 11 ( )/Deactivated Execution takes 5 minutes.

  • Page 42: Test Of Solenoid Valve/Pump

    2.4 Test of solenoid valve/pump ● The confirmation of solenoid valve and pump operation is performed. ①Supply valve ②Replenishment valve (MV2) (MV1) ③Recovery valve ④Viscosity valve (MV3) (MV4) ⑤Circulation valve (MV5) ⑥Pressure relief valve (MV6) ⑦Makeup valve ⑧Cleaning valve (MV7) (MV8) ⑨Shutoff valve ⑩Pump...
  • Page 43 The rotating speed of the pump can be changed to 3.0Hz, 4.0Hz or 7.0Hz. Please note that the pump operating frequencies of UX-Twin nozzle machine are different from those of UX-Single nozzle machine. [Caution] The pumps and solenoid valve can be operated simultaneously however, operate them with care when the solenoid valve are turned on while pump is activated because it is not a steady operation.

  • Page 44: Download

    2.5 Download ● This function is used for upgrading the program. ● The program on the EZJ128 and EZJ133 boards is downloaded from the USB memory. A “USB memory containing system data” is required. ● This function is executed with the IJ printer in “Stop” state. ●...
  • Page 45 3 Press Download on the second page of the maintenance menu. The download screen is then displayed. The version of the programs in the USB memory and board memory are displayed. If the version of the program in the board memory is older than the one in the USB memory, be sure to download the newer version.

  • Page 46: Calibration Of Viscometer

    2.6 Calibration of Viscometer 2.6.1 Calibration of viscometer ●The calibration of viscometer is to determine the “coefficient” inherent in the equipment. ●Calibrate the viscometer when installing equipment. Normally, calibrating it once is enough. However, calibrate the viscometer again when changing the ink type, and also calibrate a new viscometer after replacement.

  • Page 47: Operation Test Of Viscometer

    3 The measurement is completed in four minutes, and coefficient (calculated value) will be displayed. [Standard value of the viscometer calibration] 1200 to 2200 *The value stated above is a reference. There will be no problem even if the coefficient value displayed is other than stated above as long as data of Plunger falling time keeps within a similar range.

  • Page 48: Circulation System Environment Setup

    2.7 Circulation system environment setup ● Select whether or not the ink concentration is controlled based on results of the viscosity measurement. Perform these settings in “Stop” state. ● Setting items of Circulation system environment setup screen Item Selection Contents The ink concentration is controlled by the dot count control without measurement of the ink viscosity.

  • Page 49: System Reset

    2.8 System reset Reset the values on the “Printing data”, “User pattern” and “Maintenance” screens to the initial ● values.. ● Perform this function when the EZJ128 board or the EZJ133 board is replaced without backup. ● If this function is performed, perform setup and/or adjustment according to the contents described in “3.2.1 EZJ128 board”...

  • Page 50: Backup

    2.9 Backup ● Print data and user pattern are backed up on a USB memory. ● Backup data can be copied on an IJ printer. ● You can select the type of data when copying to the IJ printer. ● The copying method is replacing the content of USB memory as they are (overwrite copy).

  • Page 51: Unit Information

    2.10 Unit information ● Displays/changes unit TYPE-FORM, serial No., Icon type, login information and ink type. Item Contents TYPE-FORM Displays TYPE-FORM. Serial No. Displays Serial number. Icon type Select the Icon type on the display. Viscosity coefficient Ink viscosity coefficient can be changed. Ink and makeup usage Whether or not to display a warning when ink and makeup time limit control...
  • Page 52 1 Press Unit information on the maintenance menu. If in the user maintenance mode, set to the service personnel maintenance mode on the login user selection screen. For information on changing to the service personnel maintenance mode, refer to “2.1 Setting of service personnel maintenance mode.” The unit information screen is then displayed.

  • Page 53: Handling Of The Warning "Product Speed Matching Error", Etc

    2.11 Handling of the warning “Product Speed Matching Error”, etc. (user environment setup) ● Items displayed on user environment setup screen can be accessed and commonly set for both nozzles in the service personnel maintenance mode. Items displayed on “User environment setup” screen in “Service personnel maintenance mode”. №...
  • Page 54 Arabic number “2” print CG example (characters size in figure is “12 x 16”) < Method 1 > < Method 2 > You can enhance printing quality by increasing the “character height” setting value and ● decreasing distance between printing head and print object, rather than decreasing the “character height”...
  • Page 55 [Example 2] The print items are “NOT” added in units of “Column” up to the numbers specified. (24 items are set.) Before Change After Change 1Line/1Column + 3Lines/1Column 1Line/1Column + 3Lines/7Columns + 1Line/2Columns (4 items) (24 items) Column1 Column2 Column1 Column2 Column8 Column9 Column10...
  • Page 56 1 Press User environment setup on the environment setup menu. If in the user maintenance mode, set to the service personnel maintenance mode on the login user selection screen. For information on changing to the service personnel maintenance mode, refer to “2.1 Setting of service personnel maintenance mode.”...
  • Page 57 [Third page] User environment setup [Stop Com=0 2018.07.07 12:45 Start Arabic pattern variation Manual method1 method2 (0-50) Minimum character height HOME Disable Enable Signal detection in target sensor filtering Disable Enable Print Overlap Fault Check Prev. Next set- set- tings tings Disable Add items in online mode...

  • Page 58: Language Registration

    2.12 Language registration ● This function is to register screen languages. Register display language for the IJ printer from the “USB memory containing system data”. ● ● Keyboard type for character input can be selected by input mode. Input mode Input mode Contents Default...
  • Page 59 [Note] ● Do not leave from the printer until download procedure is complete then confirm the select language screen display. The download has succeeded when select language screen redisplay. Download had not succeeded when the select language screen did not redisplay or power failure happened during download procedure.

  • Page 60: Fault / Warning Log Management Code

    2.13 Fault / Warning log management code ● This code number is displayed on Fault/Warning log screen. The last three digits stand for Fault/Warning log code. The leftmost digit stands for nozzle number(s). ０ ０ ０ １ Fault/Warning log code ０：Nozzles 1 and 2 １：Nozzle 1 ２：Nozzle 2...
  • Page 61 Code Code Message name Message name External Communication Error 005 External Communication Error 006 Parts Life Expired External Communication Error 007 Parts Life Expired External Communication Error 008 External Communication Error 009 Ink Level Sensor Broken 2 External Communication Error 010 Makeup Level Sensor Broken 2 External Communication Error 011 Ink Low Warning 2...

  • Page 62: Software Option Setup

    2.14 Software option setup 2.14.1 Software option setup ● Use this function when setting up software options to IJ printer. ● In order to set up options, EZJ129 board / EZJ130 board and a memory card (IJ printer system-data is stored) are required. For information on installing EZJ130 board, refer to “3.3.13 EZJ130 board (Software option control board)”.
  • Page 63 5 Change the option to set up to “Enable”. Option setup [Stop Com=0 2018.07.07 12:45 04 Special communication A Disable Enable 05 External signal A Disable Enable 08 Barcode reader connection HOME Disable Enable Back 6 Press Back or HOME. After the completion of the setup, the screen returns to the service maintenance screen.

  • Page 64: Time Of Preparing For Printing

    2.15 Time of preparing for printing ● Set time between the print target detection signal is input and printing. Time between print target detection signal is input and printing Time of preparing Model Set Value 65um, UX-D Standard Approx. 5.5ms Please note when “Short”...

  • Page 65: Touch Screen Setup

    2.16 Touch screen setup ● Touch screen setup items with service mode are shown in the following table. Items of Touch screen setup with service mode № Item Setting Contents To the left Cursor move to right to left when input the text. Arabic input mode To the right Cursor move to left to right when input the text.

  • Page 66: Logging Data

    2.17 Logging data - Please refer to the descriptions below for way of viewing the logging data. [List of Log files] File name Contents ALARM.TXT Fault and warning data SEQUENCE.TXT Circulation sequence execution data AUTOSPLY.TXT Automatic replenishment data INKVISCO.TXT Ink viscosity measurement data TRACE.TXT Trace data - The tables below are images of output text data which are pasted to the Microsoft excel sheet.
  • Page 67 2 Circulation sequence execution data (SEQUENCE.TXT) [Circulation sequence execution data output] (1) Output contents of Circulation sequence execution data - Date : Date when the circulation sequence was executed - Start time : Time when the circulation sequence started - Finish time : Time when the circulation sequence completed - Code : Code number of the Circulation sequence...
  • Page 68 3 Automatic Replenishment data (AUTOSPLY.TXT) [Automatic Replenishment data output] (1) Output contents of Automatic Replenishment data - Date : Date when the Automatic Replenishment was executed - Start time : Time when the Automatic Replenishment started - Circulation Sequence Norm : Ink concentration is normal : Ink concentration is high Sequences to reduce the concentration are executed...
  • Page 69 ● Mode (Result of Automatic replenishment) - Normal end Mode 1: Normal end at Step B The main ink tank level is higher than the initial level when circulation sequence to reduce or increase the ink concentration is about to get started. 2: Normal end at Step C1 The main ink tank level is higher than the initial level after the ink replenishment for dot count is completed.
  • Page 70 5 Trace data (TRACE.TXT） [Output Example of Trace data] Code Sequence name Date Time Information Power turned on 2018/08/22 9:20:00 time [CCPU],2018/08/22,9:20:10, CM clock [TCPU],2018/08/22,9:20:10 Select message 2018/08/22 9:25:35 0001, Normal (screen) (1) Output contents of Trace data - Code : Refer to the code in the table below.
  • Page 71 Code Sequence name Date Time Information Select message 2018/08/28 8:15:40 0001, OK Record timing: When the message is selected (Manual only) Logging contents: Selected message number and result (Normal or Fault) Code Sequence name Date Time Information Clear Fault/Warning log 2018/08/28 8:15:40 Record timing: When <Clear>...
  • Page 72 Code Sequence name Date Time Information Disable, , Enable Ink shelf life 2018/08/28 8:15:40 Record timing: When setting of “Expiration date management of ink and makeup” was changed Logging contents: Settings of Before and After change of “Expiration date management of ink and makeup”...
  • Page 73 Code Sequence name Date Time Information [found],2018/01/28,13:00:00, Upgrade-key is short 2018/01/28 8:15:40 [key],01, [step],07 Record timing: When it is judged as Upgrade key is short. Logging contents: 1. The date and time when the discrepancy was first [found] 2. [key] The number of upgrade keys which are inserted at present 3.
  • Page 74 Logging contents: Settings of Before change/After change of [Print Overlap Fault Check] Code Sequence name Date Time Information Disable, , Enable Alarm display 2018/08/28 8:15:40 Record timing: When setting of Alarm display was changed on Periodic replacement parts management screen Logging contents: Settings of Before change/After change of [Alarm display] Code Sequence name...

  • Page 75: Rescue Soft

    - Use this function when the IJ printer does not start up during turn on procedure. - Use the Rescue soft which is prepared by Hitachi. - This function will initialize all registered data and settings, ensure reinstall all data and settings with “Back up”...
  • Page 76 2 Resetting Items. Confirm as following items after rescue procedure. Item After rescue Back up data Serial number Same before rescue Select Languages Language1 : English, Reinstall from language select screen. Language2 : none, Input mode : 1 Option setup Not supported Usable (Back up data) Print data...

  • Page 77: Maintenance Of Controlling Part

    3. Maintenance of controlling part 3.1 Structure of controlling part The controlling part is mainly composed of the controller part which is performing the screen display and the data management, the engine part performing the print and the circulation system control, I/O part performing the external signal control, and interior of inlet cover at primary power side.
  • Page 78 [Engine part (cover is opened)] Spacer for fixing protection cover EZJ134 board Battery EZJ125 board DC fan EZJ133 board EZJ138 board [I/O part (cover is opened)] EZJ119 board (Available as option) Fixing screw (M3x2) EZJ127 board Fixing screw (M3x2) Caution When you open the maintenance door with the surface of the main body is wet, be sure to remove the water on the main body to prevent water intrusion inside of the main body.
  • Page 79 [Inside of Inlet cover (cover is opened)] Caution against electric shock AC power is supplied to inside of Inlet cover. Before you open Inlet cover, be sure to turn OFF main power switch, and then wait for 10 seconds at least. After that, pullout power cable from outlet.
  • Page 80 [Single/Twin compatibility chart for Boards and Electrical parts] Y:Compatible N: NOT Compatible OP: Option [Controller circuit board] Part name Function Single/Twin compatibility Yes or No or OP EZJ133A ASSEMBLY MPU board (Dedicated part for EZJ125B ASSEMBLY Nozzle Drive1 board models with nozzle diameter of other than 65µm machine) EZJ134 ASSEMBLY...

  • Page 81: Controller Part

    3.2 Controller part - Outline of electric parts and controller board function, list of check point and notes at part replacement are explained as follows. 3.2.1 EZJ128 board (controller board) [Function] - Print data creation and their/management are. - Program, user data and environment setup data are stored. - Calendar management is performed.
  • Page 82 (11) Confirm “Serial number” on the “Unit information” screen and then confirm the date and time. (12) Recover the data from the back up memory by using "Copy data (USB→IJP)" function. (Data is from USB memory to IJ printer) As for the System reset, see “2.8 System Caution reset”.
  • Page 83 EZJ128 board external view Connector for battery connection C55+ Fixing screw (3 locations) Fixing screw (3 locations) Connector for EZJ 114 board Connector for EZJ133 board Connector for IC34 Connector for LCD harness Connector for touch panel Fixing screw Serial Number Fixing screw (3 locations) Board name/board revision...

  • Page 84: Battery

    3.2.2 Battery (EZJ128 board) [Function] - The backup battery placed for the RTC (Calendar IC) on the EZJ128 board - 2 batteries are placed per 1 machine. The batterys works as the backup battery for EZJ133 board and EZJ128 board respectively. With respect to the setting of date and time, refer to the Instruction manual “6.2...
  • Page 85 Caution - When the type of battery replaced is wrong, there will be a danger of explosion. Be sure to replace the battery with the one specified by parts list. - When battery is disposed of, insulate it by using tape, etc. (1) If an uninsulated battery is mixed with other metal or battery, it may cause heating, fire or explosion.

  • Page 86: Lcd

    3.2.3 LCD [Function] - The LCD panel for screen display. [Note at the replacement] - Be sure to turn off the power when replacing the panel. - After replacing, insert the flexible flat cable properly which connects the LCD and EZJ136 board.
  • Page 87 (3) How to lock the actuator To lock the actuator, press it downward as shown in the picture below. When you look the actuator, apply the pressure to the direction of an arrow (to the direction of inner side of the connector) to avoid the rotary shaft and the actuator being separated.

  • Page 88: Touch Panel

    3.2.4 Touch panel [Function] -Data input device for touch screen operation. [Note at the replacement] - Be sure to turn OFF the main power switch at replacement. - After replacement, be sure to insert the connectors in places. Caution when inserting or extracting touch panel connection cable When inserting the touch panel connection cable into the connector on EZJ128 board, hold both sides of the cable rein forced...
  • Page 89 3.3 Engine - The functional outline of electric parts/control board in engine, the functional outline, the setting of the switch, the list of the check point and LED display, and the notes at the replacement are explained. 3.3.1 EZJ133 board (MPU board) [Function] - Performs print control, circulation system control, nozzle control (charge voltage, excitation voltage, auto phase and the like) and communication.
  • Page 90 (11) Attach protective cover for high voltage power supply. And then connect the connector cables and batteries on EZJ133 board and EZJ125 board. (12) Mount EZJ134 board (with fixing metal plate attached). Note that clamp the wires With respect to the of CN1 and CN3 on the bac of metal plate, and then connect the connectors of replacement procedures of EZJ125, refer to...
  • Page 91 and time displayed. (16) Set or adjust manually the items in the table below. Item Reference manual Calibrate touch screen Instruction manual “7.4 Touch screen coordinate correction” coordinates Instruction manual “6.3 Set up the touch screen” Touch screen setup “2.2 System environment setup” Selection of ink type “2.2 System environment setup”...
  • Page 92 [EZJ133 board external views] CN28: Connector for CN2: Connector for CN14: Connector for Power supply 2 connection Power supply1 connection battery connection TP5: “PGND” Fixing screw TP21: “Encoder-N” TP22: “Sensor-N” CN10: Connector for EZJ130 board TP24 “PTC signal” TP23 “APH signal” LED1 CN5: Connector for Connector...
  • Page 93 3.3.2 Battery [Function] - The backup battery for the RTC (Calendar IC) on the EZJ133 board - 2 batteries are placed per 1 machine. The battery works as back up battery for EZJ133 board and EZJ128 board. [Note at the replacement] Caution - Before replacing the battery, be sure to turn off the main power switch.

  • Page 94: Ezj133 Board (Mpu Board)

    [Note at the replacement] - When the model key is broken, it needs to be replaced. Contact your nearest Hitachi sales office. - Do not install model key that is removed from other IJ printers.

  • Page 95: Ezj125 Board (Nozzle1 Drive Board)

    [Registerable languages based on the state of Language key] - When you want to confirm the state of Language key, refer to page 2 of “ Unit information” screen. - Contact your local distributor for the details of registerable languages. Information on page 2 of “Unit...
  • Page 96 [Note for EZJ125 board replacement] - When replacing the boards, be sure to turn OFF the main power switch. - Set up DSW1 and DSW2 according to the nozzle diameter. - After replacing the board, confirm the charging voltage. - Perform “Excitation adjustment” and” Auto phase gain adjustment.” - When removing the connector of CN2, CN3 and CN5, hold the socket housing and pull them out in straight.
  • Page 97 TP12: Charging signal [EZJ125 board external view] TP14: Excitation signal Spacers for fixing Spacers for fixing EZJ125 board EZJ125 board (The color of coil tape: “A” work: Blue “B” work: Yellow) TP15: PTC signal DSW1 TP1: APH signal DSW2 TP3: Ground Hexagonal spacer LED1 Hexagonal spacer...

  • Page 98: Ezj134 Board (Nozzle2 Drive Board)

    3.3.6 EZJ134 board (Nozzle2 drive board) [Function] Control of nozzle (charging voltage control, excitation voltage, APH detection etc.) is performed. [Setting of switch/check point/LED display etc.] - Setting of switch Mark Set both bits upward. - Check point/ LED Reference Name Contents number...
  • Page 99 (4) Loosen fixing screws (2pcs) of metal plate fixing EZJ134 board. Slide the metal plate upward as the picture below shows, and remove EZJ134 board with the metal plate attached. Note that remove clamped cables of CN1 and CN3 from the back of metal plate, and then remove connectors of CN1 and CN3.
  • Page 100 [EZJ134 board external view] TP3: Charging signal TP2: GND Fixing screw (2 locations) Fixing screw (2 locations) TP4: GND TP1: Excitation signal Spacer for fixing EZJ134 board Caution against an electric shock EZJ134 board have areas where the high voltage is applied. In order to avoid an electric shock, be sure to turn OFF the power and wait for at least 10 seconds at least before accessing the EZJ134 board.

  • Page 101: Ezj127 Board (I/O Board)

    3.3.7 EZJ127 board (I/O board) [Function] - Connect I/F signal with the conveyer. Output signal: Ready, Fault, Warning, Print-in-progress/Print-complete, On-line, Universal output 1, Universal output 2 With respect to the wiring, Input signal: Print target detector, Print stop, Reciprocative printing, refer to Technical manual “4 Electnic signal connection”...
  • Page 102 [Setting of switch/check point/LED display etc.] - Setting of switch [SW1] Setting of Set content factory default Bit1 Setting is performed according to the specification of the encoder. Bit2 (Refer to the setting by types of the specification described below.) Setting is performed according to the specification of the print target detector.
  • Page 103 - Check point/LED Reference Name Content number Floating GND Reference ground of external part (conveyer side) photo coupler insulation circuit LED1 Print target detector When Print target detector is ON, it is lit. input LED2 Print stop input (PNP) When Print stop signal input (PNP) is ON, it is lit. LED3 Print stop input (NPN) When Print stop signal input (NPN) is ON, it is lit.
  • Page 104 [EZJ127A board external view] Terminal block: TB1 Fixing screw Fixing screw Serial number: LED1 – LED23 (Last digit: A) [Usage of External connection terminal block 1 (TB1)] - Applicable cable size : AWG26 to 16 (Φ0.5 to 1.3) Twist the - Wire coating to be stripped : 8 to 9 mm wires (1) Push...
  • Page 105 [Specification of External communication (RS-232C)] - Connector for external communication (RS-232C) is mounted on EZJ127A board. - Used signals: SD, RD and SG - Signal specification (NC: No connection) Name Input/Output Remarks Pin number (NC) No connection Input Output Connected to DSR on IJ printer Ground Connected to DTR on IJ printer Connected to CTS on IJ printer...
  • Page 106 3-30...

  • Page 107: Ezj138 Board (Ink Circulation Module Connection Board)

    3.3.8 EZJ138 board (Ink circulation module connection board) [Function] - Electrical connection board between the control part and the ink circulation module part. [Notes for the board replacement] - Before replacing the board, be sure to turn off the power. - Use a φ2 length:160mm Philips screw driver,φ2, 160mm long or shorter.

  • Page 108: Ezj113 Board (Power Relay Board 1)

    3.3.9 EZJ113 board (Power relay board 1) [Function] - Relay board for AC power turning ON and OFF [Notes in case of the board replacement] - Be sure to connect the connectors properly when the board is replaced, - Check if IJP starts up properly by turning power ON after the board is replaced. Caution against an electric shock AC power is supplied to EZJ113 board.
  • Page 109 [Replacement procedures of EZJ113 board] (1) Turn off the power and wait for more than 10 seconds. Then pull the plug out of the wall outlet. (2) Remove the fixing screws (4 locations) , remove the side cover and remove the ground wire. (It is not necessary to remove the inlet base and inlet cover.) Side cover Main power...

  • Page 110: Ezj139 Board (Power Relay Board 2)

    3.3.10 EZJ139 board (Power relay board 2) [Function] - Relay board for AC power turning ON and OFF [Notes for the board replacement] - After replacing the board, be sure to joint connectors to right places. - Check if IJP starts up properly by turning power ON after the board is replaced. Caution against an electric shock AC power is supplied to the EZJ139 board.
  • Page 111 (3) Remove the connectors (CN1, 2, 3, 4) and replace EZJ139 board, with a new one. Remove fixing spacer(1piece), fixing screw(1 piece) and board fixing plate mount. (4) Insert the connectors of CN1, CN2, CN3 and CN4 to the places. [Inside of side cover] Board fixing plate mount EZJ139...

  • Page 112: Ezj114 Board (Led / Sw Board)

    3.3.11 EZJ114 board (LED / SW board) [Function] - LED display of Power, Ready, Fault, Warning, and Start / Stop switch [Note for the board replacement] - Before replacing the board, be sure to turn the main power switch OFF. - When the board is replaced, be sure to connect connectors in place.
  • Page 113 [Connection to the external connection terminal block (EZJ119A -TB2)] Pin No. Name Input /Output Remarks 100VAC/0.5A or 30VDC/1A Ready 100VAC/0.5A or 30VDC/1A 100VAC/0.5A or 30VDC/1A Fault 100VAC/0.5A or 30VDC/1A 100VAC/0.5A or 30VDC/1A Warning 100VAC/0.5A or 30VDC/1A Terminal specification: M4 [Setting of switch 3] The ready output selector switch (SW3) is the switch which determins to enable or disable of Ready signal output.

  • Page 114: Ezj130 Board (Software Option Control Board)

    3.3.13 EZJ130 board (Software option control board) [Function] - Input / output control board when software option is used. [Note for the board replacement] - Be sure to connect the connectors properly when the board is replaced, - Check if IJP starts up properly by turning power ON after the board is replaced. Fixing screw(1 piece) (M3) CN1:...
  • Page 115 [ Setting of SW/Check point/Display of LED etc ] [SW1] ●Setting of input signal Calendar stop signal Reserve input Mark Mark Both of bits are set Set the right bit upward. downward. 3-39...

  • Page 116: Ezj129 Board (Software Option Terminal Board)

    3.3.14 EZJ129 board (Software option terminal board) [Function] - Input / output terminal board when software option is used. [Note for the board replacement] - Before replacing the board, be sure to turn the main power switch OFF. - After replacing the board, be sure to connect the connectors in place. - Before replacing the board, be sure that the electric power is NOT supplied to the wires connecting to TB3.
  • Page 117 [Specification of RS-232C external communication connector] - Signal specification of the external communication connector(RS-232C) on EZJ129 board is shown in the table below. -Signals used: RD, SD, DTR, SG, DSR, RTS and CTS -Signal specification ( NC is No connection ) Pin number Name Input / Output...
  • Page 118 [Signal name and remarks of terminal block (TB3)] Name of signal Input / Output Remarks NPN/PNP NPN/PNP Interface － Signal ground Signal notifying Completion of signal input Output -NPN / PNP can be selected by SW7 Signal during calendar Updating Output Strobe signal Input...
  • Page 119 [ Setting of SW ] ●Setting of SW [SW4] Description Factory default setting Bit 1 Reserved ( Set to OFF ) Bit 2 Sets host communication (Set to OFF) Bit 3 Sets host communication (Set to OFF) Bit 4 Switches the filter constant of strobe signal (capacitance) ON : 0.047 (μF) + 2.2(μF) OFF : 0.047 (μF) Bit 5...
  • Page 120 [SW6] Factory default Description setting Bit 1 Bit 2 Bit 3 Bit 4 Reserved ( Set to OFF) Bit 5 Bit 6 Bit 7 Bit 8 [SW7] NPN/PNP settings of output signals. Switches (Factory default setting is that the both bits are set upward.) NPN I/F PNP I/F Mark...
  • Page 121 -Check points / LED- Reference Name Contents number Floating GND Reference ground of external part (conveyer side) photo coupler insulation circuit LED1 Reserved input LED2 Reserved input LED3 Reserved input LED4 Calendar stop /Reserved input1 (NPN) LED5 Calendar stop /Reserved input1 (PNP) Data message number signal When the data message number signal bit 0 LED6...
  • Page 122 Reference Name Contents number Data message number signal When the data message number signal bit 10 LED26 bit 10(NPN) input (NPN) is ON, it is lit. Data message number signal When the data message number signal bit 10 LED27 bit 10(PNP) input (PNP) is ON, it is lit.
  • Page 123 3-47...

  • Page 124: Multiple Power Supply 1 And 2

    3.3.15 Multiple Power Supply 1 and 2 [Function] - AC input: AC100 to 240V (50/60Hz) DC output: +3.4V, +5.1V, +12V, -12V, +24V [Note at the replacement] - In a few seconds after turned off the power, residual voltage is remaining on the parts of multiple power supply.
  • Page 125 (3) Remove the side cover, and then disconnect the connectors of CN1 and CN3 for multiple power supply. [Inside of side cover] EZJ139 board CN3: Connector for Multiple power supply 1 CN1: Connector for Multiple power supply 2 Ground wire （yellow and green）...
  • Page 126 (6) Remove hexagonal metal spacer (2pcs) for Multiple power supply 1 and remove Multiple power supply1. (7) Remove fixing screws (2pcs) for Multiple power supply 2 and remove Multiple power supply 2. ※ Since Multiple power supply 2 is sticked n near cover by double – sided tape, peel it off strongly when you remove it.

  • Page 127: High Voltage Power Supply 1 And 2

    3.3.16 High Voltage Power Supply 1 and 2 [Function] - Deflection voltage output : DC 5.7kV Max. Charge signal source voltage output : DC500V Caution against an electric shock Be sure to turn main power OFF before accessing High voltage power supply in order to avoid electric shock, because high voltage is applied on the areas of High voltage power supply.

  • Page 128: Dc Fan

    3.3.17 DC fan [Function] - Input voltage: DC 24V Exhaust fan which exhaust the air in controller out of the main unit. [Note at the replacement] - When replacing the DC fan, be sure to turn off the power. - Be sure to connect the connector in place. - When DC fan is installed, pay attention to the mounting direction of NP (name plate) and harness.

  • Page 129: Rfid Reader

    LAN cable connecting Fixing clamp in I/O Area Pull the external LAN cable in through the port of LAN Relay port of connection base in the rear and surely Harness connect it with LAN Relay Harness. View from top View of I/O Area 3.3.19 RFID reader [Function] - Read Ink ID or Makeup ID from IC tag on Ink/Makeup cartridge bottle.
  • Page 130 (5) Peel off Front-Beam sheet. (6) Unscrew three (3) fixing screws for Front beam, and then remove Front beam. [Caution] When you remove Front beam, DO NOT pull RFID reader harness by force. Fixing screws (3 pieces) for Front beam Front-beam sheet Front beam (7) Unscrew two (2) fixing screws for RFID reader cover and remove RFID reader cover.

  • Page 131: Electrical Connection Diagram

    3.3.20 Electrical Connection Diagram 3-55...
  • Page 132 - Regarding the wire harness clamping position inside the maintenance cover, refer to following list. [UX model wire harness list] DWG No. Single/Twin compatibility Mark Part No. Name Yes or no － 3J83P49331 Card connector UX(N) － 2N4ZL2142A LED harness UX －...
  • Page 133 [Clamp position inside the maintenance cover] ① ② ④ ⑤ ⑥ ③ Back of metal plate for fixing EZJ134 board Clamping position of wire harness Clamp number Clamping wire harness number ① Ｏ、Ｒ ② Ｉ、Ｙ ③ Ｄ、Ｅ ④ Ｚ ⑤ ＡＤ...
  • Page 134 ●Connector numbers and Identifying method of Harness. Name Harness mark band No. Board Connector No. Identifying method Misinstallation cannot be made by Fan harness none EZJ133 CN29 the number of pins none EZJ133 Multi-power supply harness, [2][8] EZJ133 CN28 secondary side-16pins none EZJ125 Head cable(14 wires）...

  • Page 135: Maintenance Of Circulation System

    4. Maintenance of Circulation System 4.1 Structure of Circulation System 4.1.1 Structure of Circulation System The general structure of the circulation system is shown in the following figure. Using an open/close type door (unit door) as a partition, the system is roughly divided into an ink circulating area (the front side of the equipment) and a driving part area (the rear side of the equipment).
  • Page 136 < Circulation unit: back view > ＭＶ３ ＭＶ７ ＭＶ２ ＭＶ４ (Recovery valve) (Makeup valve) (Replenishment valve) (Viscosity valve) ＭＶ５ ＭＶ６ ＭＶ１ ＭＶ８ (Circulation valve) (Pressure relief valve) (Supply valve) (Cleaning valve) < Recovery pump unit > ＭＶ２８ ＭＶ２３ ＭＶ２５ (Cleaning valve) (Recovery valve) (Circulation valve) Pressure sensor...
  • Page 137 [Caution] Since the circulation unit is made of plastic, tightening the screws with excessive torque will break the unit. See the table below for reference torques: Reference tightening Parts where Material Fixing screw (Part to be fixed) torque screws are used. tapped N·m kgf·cm...

  • Page 138: Access To The Parts On The Front Side Of The Equipment

    4.1.2 Access to the parts on the front side of the equipment 1 Remove the Inner cover (T). 2 Remove the fixing screws (2 pieces) and draw the reservoir unit out to the front halfway by supporting “a” part (4 places) with both hands. Reservoir Unit Lock pin guard Inner cover (B)
  • Page 139 <Cautions when Recovery filter base is removed> When the Recovery filter base is removed, please confirm the following points as described in the figure below. ・Please confirm the Twist-Locks (Cable Fastener) are securely fastened to the Recovery filter connecting tubes. Recovery filter connecting tubes (2 pieces) Twist-Lock (Cable Fastener, 2 pieces)

  • Page 140: Access To The Parts On The Rear Side Of The Equipment

    4.1.3 Access to the parts on the rear side of the equipment (1) Access method from the front 1 Perform “4.1.2 Access to the parts on the front side of the equipment” and pull the reservoir unit out. 2 Remove the fixing screws (2 pieces) of the unit door and open the unit door. [Caution] Take care not to cause the tubes to be caught.
  • Page 141 (2) Access method from the rear 1 Remove fixing screws (11 positions) of the rear cover and detach it. Rear cover These two screws can remain loosened.

  • Page 142: Main Ink Tank Maintenance

    4.2 Main Ink Tank Maintenance 4.2.1 Structure of Main Ink Tank Front Ink Level can roughly be confirmed by viewing the Drain Tube. [CAUTION] When Air Trap is observed, conduct Air removal until no Air Trap is observed. Check the Level surface. The Air Trap will not interfere with the operation of the printer.

  • Page 143: Main Ink Tank Replacement Procedure

    4.2.2 Main Ink Tank Replacement Procedure 1 Drain the ink in the main ink tank. (Execute “Ink Drainage” or drain ink from the drain tube.) 2 Turn off the power supply. 3 Perform “4.1.2 Access to the parts on the front side of the equipment” and pull out the reservoir unit.
  • Page 144 9 Remove the fixing screws (2 positions) and remove the Makeup reservoir. Makeup reservoir Fixing screws Remove the Solenoid cable from the hook on the Inner cover (B). Hook Solenoid Cable Inner cover (B) [Caution] Pay attention NOT to pinch the Solenoid Cable while above work is implemented. 11 Remove the fixing screw (1 position) and take out the main ink tank.
  • Page 145 13 Remove the fixing screws (2 positions) and take out the inner cover (B) Main ink tank Inner cover (B) Fixing screws 14 Clean the portion stained with ink and then install the main ink tank in reverse order of the procedures above.

  • Page 146: Pressure Reducing Valve Replacement Procedure

    4.3 Pressure Reducing Valve Replacement Procedure 1 Perform “Pressure relief”. 2 Perform the procedures described in “4.1.2 Access to the parts on the front side of the equipment”. 3 Remove Fastening screw M4x12 (2 positions: upper right and lower left of Pressure reducing valve) and Pressure reducing valve itself.

  • Page 147: Icu Joint Structure And Handling

    4.4 ICU Joint Structure and Handling When removing the tube during the maintenance work, loosen the tube lock beforehand. The ICU joint shall be removed only when damaged. ICU joint Tube lock Procedures for installing the tube 1 Pass the tube through the tube lock. 2 Insert the end of the tube into the end of the ICU joint.

  • Page 148: Solenoid Valves Replacement Procedure

    4.5 Solenoid Valve Replacement Procedure ・ Parts inside the solenoid valve (diaphragm, etc.) cannot be replaced separately. In the case of part failure, replace the entire solenoid valve. ・ The coil mold of the solenoid valve (black resin portion) is not resistant to solvents. Do not immerse the coil mold in solvent.
  • Page 149 Wire color Wire color Wire color Solenoid valve No. Solenoid valve No. Solenoid valve No. MV23 Brown Green Orange Blue MV25 Green MV28 Gray Orange Purple － － Yellow Gray 4-15...
  • Page 150 5 Remove the fixing screws (2 positions) of the solenoid valve. [Caution] Put wiping paper under the solenoid valve to provide for an ink drip. Orange Yellow Purple Fixing screws (2 Positions) Brown Blue Gray Green MV25 (Green) MV28 MV23 (Gray) (Orange) 6 Clean the portion stained with ink and then install the new solenoid valve in reverse order...
  • Page 151 7 Reset the time of the replaced solenoid to 0 on the “Parts usage time management” screen. 4-17...

  • Page 152: Pressure Sensor Replacement Procedure

    4.6 Pressure Sensor Replacement Procedure 4.6.1 Pressure Sensor (Nozzle 1) Replacement Procedure 1 Perform “Nozzle Backwash 1”. (Till stopped automatically without sucking the makeup into the gutter) 2 Turn off the power supply. 3 Perform “4.1.3 Access to the parts on the rear side of the equipment”. (The reason is that the connector is located on the rear side of the equipment.) 4 Remove the connector of the pressure sensor.
  • Page 153 6 Remove the fastener fastening the pressure sensor to the joint and remove the pressure sensor by pulling. [Caution] Put wiping paper under the Pressure sensor for ink dripping. Joint Pressure sensor Fastener 7 After cleaning the portion stained with ink, wet the new O-ring with makeup and mount on the joint.

  • Page 154: Pressure Sensor (Nozzle 2) Replacement Procedure

    4.6.2 Pressure Sensor (Nozzle 2) Replacement Procedure 1 Perform “Nozzle Backwash 2”. (Till stopped automatically without sucking the makeup into the gutter) 2 Turn off the power supply. 3 Perform “4.1.3 Access to the parts on the rear side of the equipment”. (The reason is that the connector is located on the rear side of the equipment.) 4 Remove the connector of the pressure sensor.
  • Page 155 6 Pull the forward. Solenoid valve base CAUTION If the ink was accidentally Pull forward spilled, quickly wipe it off with wiping paper, etc. In addition, do not close the maintenance cover until you confirm that the wiped part completely get dry. 7 Remove the fastener fastening the pressure sensor to the joint and remove the pressure sensor by pulling.
  • Page 156 8 After cleaning the portion stained with ink, wet the new O-ring with makeup and mount on the joint. O-ring Joint 9 Insert the pressure sensor to the joint and fix it with the fastener that was removed in step 7. [Caution] Use a new O-ring.

  • Page 157: Circulation Unit Replacement Procedure

    4.7 Circulation Unit Replacement Procedure 1 Perform “Ink drainage” and then “Pressure relief”. 2 Turn off the power supply. 3 Perform “4.1.2 Access to the parts on the front side of the equipment” and draw out the reservoir unit. 4 Perform “4.1.3 Access to the parts on the rear side of the equipment” “(1) Access method from the front”...
  • Page 158 7 Disengage the connectors of the electrical parts (15 positions) (motor, solenoid valves (8 positions), pressure sensor, viscometer (3 positions), level sensor and float sensor). 5 positions 1 position 8 positions 1 position 8 Remove the fixing screws at that fix the circulation unit (4 positions). The circulation unit can be removed.

  • Page 159: Pump Parts Replacement

    4.8 Pump part replacement 4.8.1 Pump Unit Replacement Procedure 1 Perform “Ink drainage” to “Pressure relief”. 2 Turn off the power supply. 3 Perform “4.1.3 Access to the parts on the rear side of the equipment”, “(1) Access method from the front” and open the unit door. [Caution] Be careful not to catch the tubes.
  • Page 160 6 Pull out connectors(6 positions) toward the front, which were disengaged in item 5 above. Then, remove the tubes (4 positions) and remove the screws (2 positions) that fix the pump unit on the door. (Remove the tube from the ICU joint, which is shown by dashed line. Remove the other tubes (3 positions) by loosening the tube locks.) Pull out connectors(6 positions) Tube...
  • Page 161 8 Remove the fixing screws (8 positions) which connects both the upper part and the lower part of the circulation unit. The pump unit can be removed. [Caution] Put wiping paper under the pump unit to provide for an ink drip. Pump Unit ICU fixing plate Fixing screws (8 positions)

  • Page 162: Drive Unit Replacement Procedure

    4.8.2 Drive unit replacement procedure 1 Turn off the power supply. 2 Perform “4.1.3 Access to the parts on the rear side of the equipment”, “(1) Access method from the front” and open the unit door. [Caution] Be careful not to catch the tubes. 3 Remove the wires from clamps (6 positions).
  • Page 163 5 Holding the drive unit by hand, remove the fixing screw (6 pieces), and remove the drive unit Drive unit Pump unit Fixing screws Fixing screws 6 Remove the Drive unit from the Pump unit. [Caution] When the Drive unit is removed, the springs on the Pump head (4 pieces) are freed causing the internal parts (diaphragms) elongated.

  • Page 164: Pump Head Replacement

    4.8.3 Pump head replacement 1 Perform “Ink drainage” to “Pressure relief”. 2 Turn off the power supply. 3 Perform “4.8.2 Drive unit replacement procedure” and remove the drive unit . 4 Remove the fixing screws (2 positions) and remove the pump head. [Example] The following figure below indicates the case of the makeup pump head removal.
  • Page 165 5 Clean the portion stained with ink and then install the new pump head in reverse order of the procedures above. [Caution] Make sure to use new O-rings. (2 pieces) Be careful not to cause the O-ring to fall off or pinched. Refer to the figures below for identifications of 4 kinds of pump heads.

  • Page 166: Motor Replacement

    4.8.4 Motor replacement 1 Turn off the power supply. 2 Perform “4.1.3 Approach to the parts on the rear side of the equipment”, “(1)Access method from the front” and open the unit door. [Caution] Be careful not to catch the tubes. 3 Remove the connector from the Motor.
  • Page 167 5 Install the new motor in reverse order of the procedures above. [CAUTION] Beware of Motor Rotation! When checking the motor with IJ printer door opened, watch the motor rotation and/or being caught by motor. 4-33...

  • Page 168: Gear Replacement

    4.8.5 Gear replacement 1 Turn off the power supply. 2 Referring to “4.8.2 Drive unit replacement procedure” and remove the drive unit. [Caution] When the drive unit is removed, the springs on the pump head (4 pieces) are freed causing the internal parts (diaphragms) elongated. To avoid this, put the drive unit back to its place approximately within 60 minutes.

  • Page 169: Recovery Pump2 Drive Unit Replacement Procedure

    7 Rotate the gear counterclockwise and remove the gear. Turn counterclockwise Gear 8 Install the new gear in reverse order of the procedures above. When installing, coat the gear teeth with the silicone grease. (Use Silicone Grease G501 made by Shin-etsu Chemical Co., Ltd.) 4.8.6 Recovery pump2 drive unit replacement procedure 1 Turn off the power supply.
  • Page 170 4 Remove Motor connection connector and Tube (Mark: AA) in Recovery pump unit. Motor connection connector Recovery pump unit Mark: AA CAUTION If the ink was accidentally spilled, quickly wipe it off with wiping paper, etc. In addition, do not close the maintenance cover until you confirm that the wiped part completely get dry.

  • Page 171: Recovery Pump2 Pump Head Replacement

    7 Remove the Drive unit from the Pump unit. [Caution] When the Drive unit is removed, the springs on the Pump head (4 pieces) are freed causing the internal parts (diaphragms) elongated. To avoid this, put the Drive unit back to its place approximately within 60 minutes. Fixing screw (6 pcs) 8 Attach the new Drive unit in reverse order.
  • Page 172 5 Clean the portion stained with ink and then install the new pump head in reverse order of the procedures above. [Caution] Make sure to use new O-rings. (2 pieces) Be careful not to cause the O-ring to fall off or pinched. Refer to the figures below for identifications.

  • Page 173: Recovery Pump2 Motor Replacement Procedure

    4.8.8 Recovery pump2 motor replacement procedure Turn off the power supply. Perform “4.1.3 Approach to the parts on the rear side of the equipment”, “(1)Access method from the front” and open the unit door. [Caution] Be careful not to catch the tubes. Remove the connector from the Motor.
  • Page 174 Remove the fixing screws (4 positions) of the motor. Fixing screw Motor 6 Mount the new motor by reverse order of the procedures above. [CAUTION] Beware of Motor Rotation! When checking the motor with IJ printer door opened, watch the motor rotation and/or being caught by motor.

  • Page 175: Recovery Pump2 Gear Replacement

    4.8.9 Recovery pump2 gear replacement 1 Turn off the power supply. 2 Referring to “4.8.6 Recovery pump2 drive unit replacement procedure” and remove the drive unit. [Caution] When the drive unit is removed, the spring on the pump head is freed causing the internal parts (diaphragms) elongated.
  • Page 176 6 Shift the drive shaft as shown by an arrow and remove the shaft from the bearing. 7 Rotate the gear counterclockwise and remove the gear. Turn counterclockwise Gear 8 Install the new gear in reverse order of the procedures above. When installing, coat the gear teeth with the silicone grease.

  • Page 177: Circulation Filter And Makeup Filter Replacement Procedure

    4.9 Circulation Filter and Makeup Filter Replacement Procedure 4.9.1 Circulation Filter and Makeup Filter in Nozzle 1 path Replacement Procedure 1 Perform the procedures described in “4.1.2 Access to the parts on the front side of equipment” and pull the Reservoir unit forward. Replacement of circulation filter 1 2 Rotate the nut of the circulation filter and pull it out.

  • Page 178: Circulation Filter And Makeup Filter

    4.9.2 Circulation Filter and Makeup Filter in Nozzle 2 path Replacement Procedure 1 Perform the procedures described in “4.1.2 Access to the parts on the front side of equipment” and pull the Reservoir unit forward. Replacement of makeup filter 2 2 Rotate the nut of the makeup filter and pull it out.

  • Page 179: Ink Reservoir/Makeup Reservoir Replacement Procedure

    4.10 Ink Reservoir/Makeup Reservoir Replacement Procedure 4.10.1 Ink Reservoir replacement 1 Drain ink from the ink reservoir. Connect the recovery tube to waste bottle. Execute “Reservoir Ink-Drainage” and drain the ink from the ink reservoir. [Caution] In case that the ink doesn't come out from the ink reservoir even when "Reservoir InkDrainage"...
  • Page 180 7 Remove the fixing screws (2 positions) and take out the inner cover (INK). Inner cover (INK) Fixing screws 8 Clean the portion stained with ink and then install the new ink reservoir in reverse order of the procedures above. [Caution] When installing the Ink reservoir, put the hook of the Ink reservoir into the hole of the Reservoir base first.

  • Page 181: Makeup Reservoir Replacement

    4.10.2 Makeup Reservoir replacement 1 Drain makeup from the makeup Reservoir. Execute “Reservoir Makeup Drainage” and drain the makeup from the makeup reservoir. [Caution] In case that the makeup doesn't come out from the makeup reservoir even when "Reservoir Makeup Drainage" is executed, which may be caused by malfunction of the part such as the solenoid valve or the pump, remove the makeup reservoir in the step [5] below and drain the makeup into a beaker out of the makeup reservoir's opening for attaching the sensor block.
  • Page 182 7 Remove the Fixing screws of Inner cover(SOL) (2 positions) and remove the Inner cover (SOL). Inner cover (SOL) Fixing screws 8 Clean the area stained with ink and the install the new Makeup Reservoir in reverse order of the procedures above. [Caution] When installing the Makeup Reservoir, out the hook of the Makeup reservoir into the hole of the Reservoir base first.

  • Page 183: Solenoid Replacement Procedure

    4.11 Solenoid Replacement Procedure The replacement solenoid (color of wiring: Orange) can be used for both solenoids of Ink-side and makeup-side. [Caution] ・ Please do not mix up solenoid connectors of ink-side and makeup-side when you connect them. ・ After replacement, please confirm that the solenoid on ink-side and/or Makeup-side operates properly.
  • Page 184 6 Remove the Fixing screws(1) (2 pieces) and remove the solenoid unit. 7 Remove the Fixing screws(2) (2 pieces) and remove the solenoid cover. 8 Remove the Fixing screws(3) (2 pieces each) of the Solenoid to be replaced, and remove the solenoid.
  • Page 185 12 Install the new Makeup Reservoir in reverse order of the procedures above. [Caution] When installing the Makeup Reservoir, confirm that the Solenoid Cable is routed to the hook of the inner cover(B). When installing the Makeup Reservoir, out the hook of the Makeup reservoir into the hole of the Reservoir base first.

  • Page 186: Troubleshooting When Fault Occurs In Viscometer

    4. 12 Troubleshooting when Fault Occurs in Viscometer Follow the troubleshooting steps below when the error occurs in viscometer. [Caution] If “Viscosity Reading Instability” or “Viscosity Readings Out of Range” is occurred, the IJP will automatically switch to the dot count system and operate. (1) Viscosity Reading Instability ・...
  • Page 187 (D) Pull out the viscometer IN-side tube (mark G) from viscometer. [Caution] The ink in tube will slightly drip: Fit wiping paper to the end of tube. No reverse flow of ink will occur inside the viscometer. (E) Immediately lift the end of removed tube higher than the level of liquid in the main ink tank, and then keep this for at least 10 seconds to return the ink in tube to the main ink tank.

  • Page 188: Disassembling And Washing Viscometer

    4.12.2 Disassembling and washing viscometer 1 Remove the three setscrews from viscometer cover, and then remove the cover. 2 Place the viscometer upside down while applying wiping paper to the plunger, and then remove the plunger. (Let all of the ink remaining in viscometer seep out to the wiping paper.) 3 Make sure that no ink remains in viscometer, and then pull out the cylinder.

  • Page 189: Viscometer Assembly Procedure

    4.12.3 Viscometer assembly procedure 1 Replace the cylinder, and then insert the plunger. Handle the plunger with tweezers making sure that no dust adheres to the surface of plunger. 2 Set the collar to cylinder, paying extra attention to its orientation (with the convex up). 3 Make sure that the O-ring is set in the viscometer cover, and then assemble the cover into the viscometer case.

  • Page 190: Replacing Thermistor

    4.12.5 Replacing thermistor 1 Remove the viscometer from circulation unit, referring to item 4.12.1. 2 Remove the screw (1 pc) holding the thermistor fixing plate, and then replace the thermistor. [Caution] When installing the new thermistor, moisten the O-ring with makeup to prevent it from being damaged.

  • Page 191: Print Head Replacement Procedure

    4.13 Print Head Replacement Procedure 1 Carry out “Ink drainage.” 2 Turn off the power supply. 3 Open the maintenance cover and remove the print head connectors (10 locations) in the control area. [Caution] When removing the print head connector which is connected to High voltage power supply, loosen the screw of battery first, and then remove Board base cover UXT.
  • Page 192 Power supply connector (2 locations) ＣＮ３ ＣＮ１ EZJ134 board Multiple power supply 1 ＣＮ５ ＣＮ３ ＣＮ７ ＣＮ２ ＣＮ３６ ＣＮ３８ EZJ133 board EZJ125 board Remove the side cover and FG line of the print head. 【The inside of a side cover】 FG line of Fixing screws printhead...
  • Page 193 Remove the piping connections with the printhead (5 locations: refer to the figures below) at the front of Circulation unit. (Loosen the tube lock and pull out the tube.) [Caution] Apply wiping paper at the ends of the tubes for ink dripping. Recovery filter2 Recovery line (upper) Recovery filter...
  • Page 194 6 Remove the tubes (4 pieces) which were just removed, from the plastic clamps on the main body wall. Also, the Twist-Locks (2 pieces) as shown in the figure below shall be removed. [Note] Please pay extra attention NOT to lose the removed Twist-Lock (Cable Fastener). For reassembling, refer to <Cautions when Recovery filter base is removed>...
  • Page 195 10 Remove the piping connections with the printhead (3 locations) at the back of Circulation unit. Makeup line Circulation line Circulation line (Mark: RR) (Mark: JJ) (Mark: HH) 11 Rotate the Head H Clamp assembly by 45 degrees and pull the Head H Clamp Assembly out.
  • Page 196 13 Remove the print head fixing screws (4 locations) on the rear of the unit and remove the print head cable from the unit. Fixing screws Print Head cable Fixing screws 14 Mount the new print head by reverse order of the procedures above. Use Head H Clamp assembly which you removed bundling with new Print Head assembly Parts RX2.

  • Page 197: Troubleshooting Procedure For The Circulation System

    4.14 Troubleshooting Procedure for the Circulation System Perform “(1) Fault locating and repairing method” for each trouble symptom. For the items marked * in “Probable Cause”, perform “(2) Fault locating method for the control system/circulation system” to make sure that the control system is normal, and then perform the repair work.
  • Page 198 Trouble Probable cause Check method Repairing method symptom The supply Follow the same descriptions as those of “Ink in Nozzle 1 is not pump ejected”. malfunctions. When “Open” is Replace or repair the executed on “Solenoid solenoid valve (MV1). Refer to “4.15 Repairing * MV1 Valve/Pump Test”...
  • Page 199 Trouble Probable cause Check method Repairing method symptom Refer to “4.15 CV assembly CV assembly is In cases other than Repairing method malfunctions. dry or sticks. three cases above . when the circulation Charging or route is dry or sticks”. drainage is Refer to “4.15 impossible.
  • Page 200 Check method Symptom Probable cause Repairing method Follow the same descriptions as those of “Ink in The supply pump malfunctions. Nozzle 1 is not ejected". Replace or repair the When “Open” is executed solenoid valve (MV1). on “Solenoid Valve/Pump Refer to “4.15 Repairing * MV1 malfunctions.
  • Page 201 The ink in the pipe M is sucked even during The pressure operation (except at Replace the solenoid resistance of MV2 supply). (Remove the valve (MV2). is faulty. tube connection block of the ink reservoir and check.) Replace or repair the When “Open”...
  • Page 202 Symptom Probable cause Repairing method Check method Prepare the checking tube which is made by cutting PTFE tube (Part name: PTFE tube 2-3, Part No.: 451064) to the length of about 600mm and the beaker or the like containing water. Replace the tube If the air flows out from fixed to the Tube...
  • Page 203 Symptom Probable cause Repairing method Check method The recovery Follow the same descriptions as those of “The supply pump pump malfunctions ". malfunctions. When “Open” is Replace or repair the executed on solenoid valve “Solenoid The solenoid (MV23). Refer to * MV23 “4.15 Repairing valve...
  • Page 204 Disconnect the Drain Remove the exhaust Tube Joint of the tube connected to the main ink tank to open Tube Lock (1) of the the main ink tank to main ink tank. (Refer to “4.2.2 Main Ink the atmosphere. (Refer to “4.2.2 Main Tank Replacement Procedure”).
  • Page 205 Check if the warning message, “Ink Low Ink or makeup Warning” or “Makeup in each Replenish ink or reservoir is in Low Warning” is makeup and restart. short supply. displayed on the screen. 4-71...
  • Page 206 (2) Fault locating method for the control system/circulation system (a) When the pump motor and all the solenoid valves are not operated, the multi-power supply (24 V system) is abnormal. (b) If the electrical parts (pump motor, solenoid valves, and pressure sensor) are not operated, i,e., any case other than above, make the following checks first.

  • Page 207: Repairing Method When The Circulation Route Is Dry Or Sticks

    4.15 Repairing Method When the Circulation Route Is Dry or Sticks 4.15.1 Recovery method when solenoid valve is stuck 1 Turn off the power. 2 Perform “4.1.3 Access to the parts on the rear side of the equipment” and open the unit door.

  • Page 208: Repairing Method For The Makeup Pump

    4.15.3 Repairing method for the makeup pump 1 Remove the tube connecting block of makeup reservoir, and then connect the cleaning bottle to the pipe of pipe N. (You can apply pressure more easily by putting a tube between the pipe and the cleaning bottle.) Cleaning bottle Pipe...

  • Page 209: Repairing Method For The Recovery Pump

    4.15.5 Repairing method for the recovery pump Recovery filter 1 1 Operate the pump, MV1, and MV6 in this order on the “Solenoid Valve/Pump Test” screen. 2 Operate the pump with the pressure adjustment screw turned completely clockwise to obtain the maximum pressure. 3 If the ink flows into the recovery tube, the repair work is completed.

  • Page 210: Recovery Method When The Cv Assembly Is Drying/Clogging

    4.15.6 Recovery method when the CV assembly is drying/clogging 1 Remove the tube connecting block of the ink reservoir, and then insert a metal pin or the like into the hole of the CV assembly. (The SUS ball which is firmly adhered to the O-ring inside the CV assembly shall be separated.) Cross-sectional view Tube connecting block...

  • Page 211: Maintenance Work Of Intake Fan Unit

    4.16 Maintenance work of intake fan unit 4.16.1 Structure of Intake fan unit Intake fan cover Thumbscrew Air filter Intake fan unit assembly Intake fan Intake fan cover assembly 4.16.2 Replacement of Intake fan unit 1 Turn off the power. 2 Loosen the thumbscrew and remove the Intake fan cover.
  • Page 212 4 Remove the Fastening screws (4 locations) of the Intake fan unit assembly. Fastening screws (4 locations) Intake fan unit assembly 5 Disengage the Intake fan harness, connector and remove the Intake fan unit assembly. Intake fan harness connector 冷却ユニットクミ Intake fan unit assembly Intake fan cover assembly 6 Remove the Fastening screws (4 locations) of Intake fan cover assembly.

  • Page 213: R Air Filter Replacement Procedure

    4.17 R Air filter Replacement Procedure [Replacement interval] - The replacement interval of the R air filter is about 4800 hours as standard, but the actual replacement interval varies by the printer’s operating environment condition. Replace the R Air filter at the same time with the air filter (in every two times).

  • Page 214: Check On Exhaust Duct Dripping

    5 Reset the time of the R air filter to 0 on the “Parts usage time management” screen. 4.18 Check on Exhaust Duct dripping The exhaust contains the vapor of makeup and it will be liquefied when cooled down. Depending on the IJP’s installation environment, there will be a case that there is a big difference between IJP’s inside temperature and the operating temperature.

  • Page 215: Circulation System Cleaning Of Printer Which Uses Ethanol-Based Ink

    4.19 Circulation system cleaning of printer which uses Ethanol-based ink The Ethanol-based ink could be influenced by the environment where the printer is installed, and it is likely to cause clogging of the filter compared to MEK-based ink. The periodical replacement of the filters, and the periodical cleaning of the circulation system with Makeup for MEK-based ink shall be conducted in order to maintain proper operation of the printer.
  • Page 216 (7) Cleaning of Ink reservoir, Main ink tank and Viscometer. 1 If the ink reservoir is stained with ink, use makeup (S100A) to clean it. 2 Refer to “4.2.3 Removal method of the Main ink tank lid” for overhaul of the main ink tank. 3 Refer to “4.12.1 Viscometer removal procedure”...

  • Page 217: Print Head Related Maintenance

    5. Print head related maintenance 5.1 Structure of Print head Heating unit connector (No mark is indicated) Heating unit Coupling connector (2) Heating unit Shutoff valve (MV9) connector Shutoff valve (No mark is (MV29) indicated) connector (2) Shutoff valve (MV9) Nozzle Nozzle excitation...

  • Page 218: Cable Running Direction

    5.2 Cable running direction The cable running direction can be changed as shown in the following figures. The customer should not attempt to run the cable himself/herself. The cable should be run by a service technician. １ Remove the 4 fastening screws. Pull out the coupling approximately by 10 mm.

  • Page 219: Gutter Configuration And Replacement Method

    5.3 Gutter configuration and replacement method 5.3.1 Gutter configuration Gutter base Gutter The gutter and the gutter base are connected and cannot be disassembled. 5.3.2 Replacement method １ Remove the 2 fastening screws Fastening screws ２ The gutter base comes off. Gutter base O-ring 2.2...

  • Page 220: Mgv Filter Replacement

    5.4 MGV filter replacement [NOTE] There are 2(two) MGV filters attached (MV9 side and MV29 side). Follow the same procedures as below to replace each filter. １ Depressurize the printer. ２ Remove the head cover and the heater cover. Head cover Heater cover ３...
  • Page 221 ６ Lift MV9 (or MV29). MV9/MV29 ７ (1) Remove the Nozzle-IN joint from MGV, and remove MGV filter and O-ring 3.9. Fix the new MGV filter and new O-ring 3.9. Perform the assembly after dipping the O-ring in makeup, and confirm that the O-ring does not jump out of the hole.

  • Page 222: Shutoff Valve (Mv9/Mv29) Replacement

    5.5 Shutoff valve (MV9/MV29) replacement [CAUTION] There are two (2) Shutoff valves attached (MV9 side and MV29 side). Follow the same procedures as below to replace each valve. １ Depressurize the printer. ２ Remove the head cover and the heater cover. ３...
  • Page 223 ５ Remove the fixing screws (2 locations) and remove the coupling cover. Fixing screws Coupling cover ６ Remove MGV holder and Nozzle-IN Joint holder. MGV holder Nozzle-IN joint holder ７ Take up the shutoff valves (MV9/MV29), remove the Makeup IN joint and the shutoff valves (MV9/MV29). When the O-ring (P2.2) is remained in the heating unit, remove it.
  • Page 224 (2) Connect the Makeup IN joint to the shutoff valve and fix it to the boss on the heating unit. (3) Put the Makeup IN joint in the groove of MGV holder. (4) Attach the MGV holder and fix the shutoff valve. (5) Put the MGV filter, O-ring3.9, Nozzle-IN-joint and nozzle-IN joint presser foot.

  • Page 225: Heating Unit Replacement

    5.6 Heating unit replacement １ Depressurize the printer. ２ Remove the head cover and the heater cover. ３ Remove the nozzle lead wire and the air purge tube. Nozzle excitation connector (2) Air purge tube 3P coupling cover (Not detachable) Lead wire Nozzle excitation connector (No mark is indicated)
  • Page 226 ６ Remove the shutoff valves.(MV9/MV29) (Refer to “5.5 Shutoff valve (MV9/MV29) Replacement”) MV9, MV29 ７ Remove the 4 fastening screws of the heating unit. Remove the head base rear cover. (14 screws) Fastening screw Head base rear cover Fastening screw ８...

  • Page 227: Aph Board (Ezj135) Replacement

    5.7 APH board (EZJ135) replacement １ Remove the head base rear cover. CN1connector (2) Screws APH board CN4connector ２ Remove the APH board (No mark is fastening screws. indicated) (無印) CN4connector CN3connector (22) ３ Slide approximately by 4 mm. ４ Pull out the APH board. ５...

  • Page 228: Nozzle Replacement

    5.8 Nozzle replacement [NOTE] There are two (2) nozzles attached (Nozzle 1 and Nozzle 2). Follow the same procedures as below to replace each nozzle. １ Depressurize the printer. ２ Remove the head cover and the heater cover. ３ Remove the excitation line from the Coupling cover and disconnect the connector.
  • Page 229 ５ Remove the Coupling cover fastening screws (2 locations) and remove the 3P Coupling cover. Then, remove the Ground wire fastening screw (1 location for each nozzle). Ground wire fastening screw for nozzle 2 Coupling cover fastening screws Ground wire fastening screw for nozzle 1 ６...
  • Page 230 ９ Cut the recovery side tube of the new nozzle into a suitable length and connect the nozzle OUT joint. [Cautions] (1) Get rid of the tube remaining on the joint in the 6 (2) When the tube is hardly put in the joint because it slips, grasp the front edge of the tube by a JK wiper or the like and put it in the joint.

  • Page 231: Nozzle Orifice Cleaning

    5.9 Nozzle Orifice Cleaning 1) Detergent to use for an ultrasonic cleaning 2）Procedures of the cleaning Nozzle Clogging or Ink Stream Bent occurred. The ultrasonic cleaning with the Weak-Alkali Detergent is effective for the foreign objects of the nozzle orifice Eject the makeup *1 and confirm which it is hard to remove with MEK or the ink stream position if it is at...
  • Page 232 3） The efficient way to use the ultra-sonic cleaning machine The efficient way to use the ultra-sonic cleaning machine for ultra-sonic cleaning of the nozzle orifice 1: How to find the optimum cleaning position When the orifice is cleaned by the ultra-sonic cleaning machine, the aluminum foil can be used as a good trial sample to find the right position to place the nozzle orifice in the machine.

  • Page 233: Thermistor Replacement

    5.10 Thermistor replacement １ Remove four (4) fixing screws, and then pull out the coupling to the direction of the arrow on the left. Fixing screws (2 pieces) Coupling Fixing screws (2 pieces) ２ Remove the banding band(s) and the packing. [Caution] Before removing the banding band and the packing, put a mark on the tube by a tape, etc.
  • Page 234 ５ Attach the new banding band and the packing, and then reassemble all the removed parts in reverse order of the procedures above. [Cautions] (1) When attaching new packing, peel off the paper liner first, and then apply the packing around the bundle of both wires and tubes.

  • Page 235: Deflection Base Replacement Procedure

    5.11 Deflection Base Replacement Procedure When the LED protection glass is damaged, or when the deflection base gets extremely dirty and its error cannot be cancelled even after the cleaning, it is necessary to replace the deflection base. Perform it by following procedure. １...
  • Page 236 ８ Coat the setscrews for the high-voltage electrical power lines with silicone rubber following the procedures below. (Nozzle1) High-voltage line terminal (round terminal) Dispenser Insert the tip of the dispenser into the downside of the terminal to fill the downside If the downside is (Nozzle2) almost filled, fill up the...
  • Page 237 ② Heat the silicone rubber filled part by warm air of a drier (500W or equivalent) for 7 to 8 minutes and cure the surface. [Caution] Keep the drier 50 to 100mm away from the head or the warm air may deform the tube. Drier 50 to 100mm Nozzle...
  • Page 238 ９ Attach the APH Shield Assembly, Phase Sensor Board, Head Rear Cover, etc. in reverse order. APH Shield Assembly １０ Press “Ink stream alignment” on “Circulation control” screen to adjust the position of the ink stream. １１ Perform ink ejection. １２...

  • Page 239: Head Base Replacement Procedure

    5.12 Head base Replacement Procedure When the head base is damaged, it must be replaced. Follow the procedures below for replacement. １ Remove the head cover and heater cover. ２ Remove the nozzles described in the item 5.8. ３ Remove the deflection base described in the item 5.11. ４...
  • Page 240 Back face: Recovery tube, APH board power supply wires, FG wires, APH signal wires, Video signal wires, Heater feeder wires, EZJ135 board signal wires, High voltage feed wires APH board power wire Harness with terminal Heater CN1connector (2) CN2 connector (No mark is indicated) Recover APH signal wire...
  • Page 241 １２ Place the APH tube assembly on the head base and connect with the recovery tubes. １３ Fasten the FG and one side of the deflection electrode GD wires together. Screw another side of the deflection electrode GD wires on the front edge of the head base. １４...

  • Page 242: Head Cable Replacement Procedure

    5.13 Head Cable Replacement Procedure １ Refer to “4.13 Print head replacement procedure” for separating the head cable from the main unit. Caution against an electric shock shock Opening the maintenance door is included in this replacement procedure. In order to avoid an electric shock, be sure to turn off the power before access to the high voltage power supply.

  • Page 243: Troubleshooting

    6. Troubleshooting 6.1 Troubleshooting List Name Remarks Subsection Faults – Ink-stop type 6.2.1 Ink Low Fault 6.2.2 Main Ink Tank Too Full 6.2.3a (N1) Deflection Voltage Fault 6.2.3b (N2) Deflection Voltage Fault 6.2.4 Ink Replenishment Timeout 6.2.5a (N1) Ink Drop Charge Too Low 6.2.5b (N2) Ink Drop Charge Too Low 6.2.6...
  • Page 244 Name Remarks Subsection Faults – Print-stop type 6.3.1a (N1)Ink Drop Charge Too High 6.3.1b (N2)Ink Drop Charge Too High 6.3.2 Barcode Short On Numbers 6.3.3 Shutdown Fault 6.3.4 Count Overflow 6.3.5 Print Overlap Fault 6.3.6 Print Head Cover Open 6.3.7 Improper Sensor Position 6.3.8 Target Sensor Fault...
  • Page 245 Warning conditions (printing continuously performed) 6.4.1 Excitation V-ref. Review, Excitation V-ref. Review 2 6.4.2 Viscosity Reading Instability 6.4.3 Viscosity Readings Out of Range 6.4.4 High Ink Viscosity 6.4.5 Low Ink Viscosity 6.4.6 Battery Low M 6.4.7 Calendar Content Inaccurate Refer to the Technical manual “5.7.
  • Page 246 Faults – No indication on screen 6.5.1 Chipped print (lower dots) 6.5.2 Chipped print (upper dots) 6.5.3 Varying character height 6.5.4 Increased character distortion 6.5.5 Disordered characters 6.5.6 Ink leakage/blowout (Print head) No printing is made in “Ready” state 6.5.7 6.5.8a (N1)No ink ejection from nozzle1 6.5.8b...

  • Page 247: Faults - Ink-Stop Type

    6.2 Faults – Ink-stop type 6.2.1 Ink Low Fault Ink Low Fault Open the maintenance cover. Install the new cartridge bottle, and replenishing the ink. Is there ink in the ink reservoir? Is the fault cleared by pressing the Clear key? ●...
  • Page 248 6.2.2 Main Ink Tank Too Full Main Ink Tank Too Full Is the initial-level sensor Open the maintenance cover. Check the initial- Has the Main Ink Is the ink main tank full level sensor Tank Too Fill fault of ink? *1 connection again and frequently occurred? correct it if necessary.
  • Page 249 6.2.3a (N1)Deflection Voltage Fault (N1)Deflection Voltage Fault Is the EZJ125 board CN6 connector or high-voltage power supply output connector disconnected? Disconnect the connector and then Connect the connector. reconnect it. Does the printer become ready for printing? Replace the high-voltage power supply unit1.
  • Page 250 6.2.3b (N2)Deflection Voltage Fault (N2)Deflection Voltage Fault Is the EZJ133 board CN37 connector or high-voltage power supply output connector disconnected? Disconnect the connector and then Connect the connector. reconnect it. Does the printer become ready for printing? Replace the high-voltage power supply unit2.
  • Page 251 6.2.4 Ink Replenishment Time-out Ink Replenishment Time-out Press the Reset key to clear the fault and execute “Ink refill”. Then restart the printer. Does the “Replenishment Time-out” fault recur? Does the MV2 (Replenishment valve) operate on the solenoid valve/pump test screen? Does the MV2 operate when the connector of the other Replace the connection...
  • Page 252 ② ③ Does the initial-level sensor operate? Is the EZJ133 board CN13 or EZJ138 board CN1, 4 connector disconnected? Connect the connector. Disconnect the connectors, then reconnect them (3 connectors). Does the initial-level sensor operate? Is the connection harness conducting? Replace the harness.
  • Page 253 6.2.5a (N1)Ink Drop Charge Too Low (N1)Ink Drop Charge Too Low Is the nozzle1 clogged or the ink stream bent? Pour a cleaning solution over the orifice plate surface to clean it, then allow it to thoroughly dry. If the problem is not fixed: Are the charge electrode Execute the “Nozzle...
  • Page 254 6.2.5b (N2)Ink Drop Charge Too Low (N2)Ink Drop Charge Too Low Is the nozzle2 clogged or the ink stream bent? Pour a cleaning solution over the orifice plate surface to clean it, then allow it to thoroughly dry. If the problem is not fixed: Are the charge electrode Execute the “Nozzle...
  • Page 255 6.2.6 System Operation error C / T / M / S System Operation error C / T /M / S Is the IJ printer connected to its dedicated ground? Properly establish the ground connection. 確実にア ース を 接続する Are the nozzle head and IJ printer main body insulated from the other equipment?
  • Page 256 6.2.7a (N1)Deflection Voltage Leakage (N1)Deflection Voltage Leakage Does the ink stream enter the center of the Is the ink or makeup gutter? deposited on the deflection electrodes and their surrounding sections? Adjust the ink stream position1. Is any foreign matter Thoroughly remove deposited between the deflection electrodes...
  • Page 257 Does the IJ printer become ready when you start it by pressing the Startup key with the high-voltage power supply1 output connector disconnected? Replace the high-voltage power supply unit1. Resume the Is the alarm issued? operation. Replace the EZJ125 board *1 Resume the Is the alarm issued? operation.
  • Page 258 6.2.7b (N2)Deflection Voltage Leakage (N2)Deflection Voltage Leakage Does the ink stream enter the center of the Is the ink or makeup gutter? deposited on the deflection electrodes and their surrounding sections? Adjust the ink stream position2. Is any foreign matter Thoroughly remove deposited between the deflection electrodes...
  • Page 259 Does the IJ printer become ready when you start it by pressing the Startup key with the high-voltage power supply2 output connector disconnected? Replace the high-voltage power supply unit2. Resume the Is the alarm issued? operation. Replace the EZJ133 board *1 Wipe and clean the dust Is the high-voltage line dusty? off the line and allow to...
  • Page 260 6.2.8 Makeup Replenishment Time-out Makeup Replenishment Time-out Does the MV7 (Makeup valve) operate on the solenoid valve/pump test screen? Does the MV7 operate when Replace the connection the connector of the other harness ① operating solenoid valve is connected to MV7? The makeup does not flow into the main ink tank from the makeup reservoir when Pump...
  • Page 261 6.2.9 Makeup Low Fault Makeup Low Fault Open the maintenance cover. Is the makeup reservoir charged with the makeup? Install the new cartridge bottle, and replenishing the makeup. Turn OFF the power. Can the abnormality be cleared by pressing the Clear key? Is the sensor connector disconnected? (See the overall wiring...
  • Page 262 6.2.10a (N1)Ink Heating Unit Too High (N1)Ink Heating Unit Too High ▪ Clear the fault. ▪ From the maintenance screen, place the heating unit in the operating mode. *) *) Refer to the following caution. ▪ Restart the IJ printer. See Section “6.5.8a, No ink ejection Does the ink jet out? from nozzle1.”...
  • Page 263 6.2.10b (N2)Ink Heating Unit Too High (N2)Ink Heating Unit Too High ▪ Clear the fault. ▪ From the maintenance screen, place *) Refer to the following caution. the heating unit in the operating mode. *) ▪ Restart the IJ printer. See Section “6.5.8b, No ink ejection Does the ink jet out? from nozzle2.”...
  • Page 264 6.2.11a Multi DC Power Supply1 Fan Fault Multi DC Power Supply1 Fan Fault Is the EZJ133 CN2 connector or Is the multiple power supply1 multiple power supply CN4 fan running? connector disconnected? Connect the connector. Replace the EZJ133 board. *1 Is the problem fixed? Replace the multiple power supply1 [Replacement procedures of...
  • Page 265 6.2.11b Multi DC Power Supply2 Fan Fault Multi DC Power Supply2 Fan Fault Is the EZJ133 CN28 connector Is the multiple power supply2 or multiple power supply CN4 fan running? connector disconnected? Connect the connector. Replace the EZJ133 board. *1 Is the problem fixed? Replace the multiple power supply2 [Replacement procedures of...
  • Page 266 6.2.12a (N1)Charge Voltage Fault (*1): When you replace EZJ125 board, refer to [Replacement (N1)Charge Voltage Fault procedures of EZJ125 board] in “3.3.5 EZJ125 board (Nozzle1 drive board)”. Remove the print head cover. [Replacement (*2): When you replace EZJ133 board, refer to procedures of EZJ133 board] “3.3.1 EZJ133 board (MPU board)”.
  • Page 267 6.2.12b (N2)Charge Voltage Fault (N2)Charge Voltage Fault (*1): When you replace EZJ134 board, refer to [Replacement procedures of EZJ134 board] in “3.3.6 EZJ134 board (Nozzle2 drive board)”. Remove the print head cover. (*2): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 board] “3.3.1 EZJ133 board...
  • Page 268 6.2.13a (N1)No Ink Drop Charge (N1)No Ink Drop Charge Is the ink stream Refer to “6.5.8a No ink being ejected from ejection from nozzle1.” the nozzle1? Refer to “6.2.5a (N1)Ink Is the nozzle1 clogged Drop Charge Too Low”. or the ink stream bent? Refer to “6.2.5 a (N1) Ink Is the gutter section Drop Charge Too Low”.
  • Page 269 6.2.13b (N2)No Ink Drop Charge (N2)No Ink Drop Charge Is the ink stream Refer to “6.5.8b No ink being ejected from ejection from nozzle2.” the nozzle2? Refer to “6.2.5b (N2)Ink Is the nozzle2 clogged Drop Charge Too Low”. or the ink stream bent? Refer to “6.2.5 b (N2) Ink Is the gutter section Drop Charge Too Low”.
  • Page 270 6.2.14a (N1)Ink Heating Unit Temperature Sensor Fault (*1): When you replace Heating unit, refer to “5.6 Heating unit replacement”. (N1)Ink Heating Unit (*2): When you replace EZJ125 board, refer to [Replacement Temperature Sensor procedures of EZJ125 board] in “3.3.5 EZJ125 board Fault (Nozzle1 drive board)”.
  • Page 271 6.2.14b (N2)Ink Heating Unit Temperature Sensor Fault (*1): When you replace Heating unit, refer to “5.6 Heating unit replacement”. (N2)Ink Heating Unit [Replacement (*2): When you replace EZJ133 board, refer to Temperature Sensor procedures of EZJ133 board] “3.3.1 EZJ133 board Fault (MPU board)”.
  • Page 272 6.2.15 Memory Fault C/T/M/S Memory Memory Fault T/M/S Fault C Does the fault recur Does the fault recur upon power-on reset? upon power-on reset? Do the system reset by rescue soft Do the system reset by rescue soft Does the fault recur? Does the fault recur? Replace the EZJ133 board*1.
  • Page 273 6.2.18a (N1)Ink Heating Unit Over Current (N1)Ink Heating Unit Over Current Is the PTC resistance (*1): When you replace Heating unit, refer to “5.6 Heating measured (between the unit replacement”. EZJ125 board TP3 and TP15) (*2): When you replace EZJ125 board, refer to [Replacement lower than 23 ? procedures of EZJ125 board] in “3.3.5 EZJ125 board (Nozzle1 drive board)”.
  • Page 274 6.2.18b (N2)Ink Heating Unit Over Current (N2)Ink Heating Unit Over Current Is the PTC resistance measured (between the (*1): When you replace Heating unit, refer to “5.6 Heating EZJ133 board TP3 and TP24) unit replacement”. lower than 23 ? (*2): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 board] “3.3.1 EZJ133 board...
  • Page 275 6.2.19 Ambient Temperature Sensor Fault (*1)： When you replace the printhead, refer to Ambient Temperature Sensor Fault “4.13 Print Head Replacement Procedure”. (*2): When you replace EZJ133 board, refer to Disconnect the EZJ133 board [Replacement procedures of EZJ133 board] CN38 connector and reconnect it. “3.3.1 EZJ133 board (MPU board)”.
  • Page 276 6.2.21a Pump Motor1 Fault Pump Motor1 Fault Pull out and insert the connector ・ CN13 of the EZJ133 board ・ CN1 and CN4 of the EZJ138 board ・ pump motor connector. Does the fault recur? Replace the pump motor1. *1 Does the fault recur? Does the connection harness have electrical...
  • Page 277 6.2.21b Pump Motor2 Fault Pump Motor2 Fault Pull out and insert the connector ・ CN31 of the EZJ133 board ・ CN3 and CN6 of the EZJ138 board ・ pump motor connector. Does the fault recur? Replace the pump motor2 *1 Does the fault recur? Does the connection harness have electrical...
  • Page 278 6.2.22 Inside Temperature Sensor Fault Viscometer Ink Temperature Sensor Fault Disconnect and reconnect the following connectors. ▪ EZJ133: CN13 ▪ EZJ138: CN1, CN4 ▪ Thermistor relay harness connector Does the fault recur? Replace the thermistor of Viscometer*1. Does the fault recur? Replace the EZJ133 board*2.
  • Page 279 6.2.23a (N1)Ink Heating Unit Temperature Low (N1)Ink Heating Unit Temperature Disconnect the EZJ125 board CN7 connector and reconnect it. Is the fault issued again? Replace the heating unit. *1 Is the fault issued again? Replace the EZJ125 board. *2 Is the fault issued again? Resume the Replace the EZJ133 board.
  • Page 280 6.2.23b (N2)Ink Heating Unit Temperature Low (N2)Ink Heating Unit Temperature Disconnect the EZJ133 board CN38 connector and reconnect it. Is the fault issued again? Replace the heating unit. *1 Is the fault issued again? Replace the EZJ133 board. *2 Resume the operation.
  • Page 281 Resume the Does the fault recur? operation. It is necessary to change the model key. Contact your local Hitachi sales office with the unit serial number and model name. 6.2.25 Language-key Fault (*1): When you replace EZJ133 board, refer to...
  • Page 282 6.2.26a (N1)Charge Voltage Too Low (N1)Charge Voltage Too Low Clear the fault. Set the printer in “Ready” state. Does the fault recur? Replace the EZJ125 board. *1 Does the fault recur? Replace the high-voltage power supply1. *2 Does the fault recur? Replace the EZJ133 board.
  • Page 283 6.2.26b (N2)Charge Voltage Too Low (N2)Charge Voltage Too Low Clear the fault. Place the printer in The “Ready” state. Does the fault recur? Replace the EZJ134 board. *1 Does the fault recur? Replace the high-voltage power supply2. *2 Does the fault recur? Replace the EZJ133 board.
  • Page 284 6.2.27a (N1)Circulation Route Pressure Is High < Occurrence condition of this alarm> This alarm “Circulation Route Pressure Is High” is indicated when the ink pressure is NOT reduced at MV5 opening step while the sequence ①, ② or ③ below is executed and the ink is being ejected. ①...
  • Page 285 6.2.27b (N2)Circulation Route Pressure Is High < Occurrence condition of this alarm> This alarm “Circulation Route Pressure Is High” is indicated when the ink pressure is NOT reduced at MV25 opening step while the sequence ①, ② or ③ below is executed and the ink is being ejected. ①...
  • Page 286 6.2.28 Makeup Level Sensor Broken (3) Makeup Level Sensor Broken (3). (*1): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 board] “3.3.1 EZJ133 board (MPU board)”. Go to “Level sensor confirmation” screen and check if all sensors contained in Makeup reservoir work [Caution] properly.
  • Page 287 6.2.29a (N1)Ink Drop Charge Fault (N1)Ink Drop Charge Fault Is the setting of DSW2 of Correct the setting of DSW2 of EZJ125 board correct? EZJ125 board. か Does the fault recur? Replace the EZJ125 board. *1 Does the fault recur? Replace the high voltage power supply1.
  • Page 288 6.2.29b (N2)Ink Drop Charge Fault (N2)Ink Drop Charge Fault Is the setting of SW6 of Correct the setting of SW6 of EZJ133 board correct? EZJ133 board. か Does the fault recur? Replace the EZJ134 board. *1 Does the fault recur? Replace the high voltage power supply2.

  • Page 289: Faults - Print-Stop Type

    6.3 Faults – Print-stop type 6.3.1a (N1) Ink Drop Charge Too High (N1) Ink Drop Charge Too High Clean the gutter section and its surrounding area with a cleaning solution. (When using carbon type ink, remove the deflection plate, Is the gutter of nozzle1 charge plate and gutter, then clean the mounting base surface as mentioned on section soiled?
  • Page 290 6.3.1b (N2) Ink Drop Charge Too High Ink Drop Charge Too High Clean the gutter section and its surrounding area with a cleaning solution. (When using carbon type ink, remove the deflection plate, Is the gutter charge plate and gutter, then clean the mounting base surface as mentioned on section soiled? “Handling guidance of each ink;...
  • Page 291 6.3.2 Barcode Short On Numbers Barcode Short On Numbers Input the fixed number of character for EAN-13, EAN-8, UPC-A, UPC-E and GS-1 data bar Resume the operation. Fixed character number When country code is input When country code is input on edit message screen on print format screen EAN-13...
  • Page 292 6.3.4 Count Overflow Count Overflow In case of count multiplication printing, set the count condition so that the digit number of integer part of multiplication result (*) is not exceeded the input count character. *) Multiplication result = “Count value” x “Count multiplier” Resume the operation.
  • Page 293 6.3.6 Print Head Cover Open Print Head Cover Open Is the print head cover removed? Properly install the print head cover. Is the print head cover completely closed? Completely close the print head cover. Is the magnet inside the head cover damaged or missing? Properly install the magnet.
  • Page 294 6.3.7 Improper Sensor Position Improper Sensor Position Is the repeat printing function required? Is there an excessive clearance between the print head and print target detector? Is the “Repeat count” is set to “0000” from “Print specifications” Decrease the screen? clearance between the print head and print target...
  • Page 295 6.3.8 Target Sensor Fault Target Sensor Fault Is the target sensor fault function required? From “Print specifications” screen, set the value of “Target sensor timer” to “0000”. Is the “Sensor out timer” setting is greater than necessary for the sensor normal ON time? Select a setting that is greater than necessary.
  • Page 296 6.3.9 Target Spacing Too Close Target Spacing Too Close Are there more than four workpieces (print targets) between the sensor and print head? Decrease the clearance between the sensor and print head and reduce the number of workpieces between the sensor and print head to four or less.
  • Page 297 6.3.11 Blank Print Item Blank Print Item Does any print item consisting of only Blank characters exist? Adjust the print contents so that the print item consisting of only Blank characters exist. Does the fault recur Delete all print contents once and recreate them.
  • Page 298 6.3.13 Internal Communication Error C / T / M Internal Communication Error C/M Check IJ printer’s model, then Was software downloaded just download the software again, which Does the fault recur? before this error occurred? corresponds to the IJ printer model. Is the EZJ133 board CN1 connector disconnected or in poor contact?
  • Page 299 6.3.14 Invalid Data Change Timing 6.3.15 Invalid Count Data Change Timing 6.3.16 Invalid Print Start Timing Invalid ******** Timing Resume the operation. [ SUPPLIMENT ] The signal of the next print object is detected during the printing preparation time for the current print object. Enter print object detection signal with the interval longer than the print preparation time (print interval).
  • Page 300 6.3.17 Ink Shelf Life Information Ink Shelf Life Information Is there ink remaining in the Ink reservoir? Discard ink remaining. Replace ink. Input the lot number of the replaced ink in ”Unit information” screen. Is “Ink Shelf Life Information” shown again? Confirm if he ink type on unit information and that of the ink just replaced are the same, and input again the lot number of replaced ink on “Unit information”...
  • Page 301 6.3.18 Makeup Shelf Life Information Makeup Shelf Life Information Is there makeup in the Makeup reservoir? Discard makeup remaining. Replace makeup. Input the lot number of the replaced makeup in “Unit information” screen. Is “Makeup Shelf Life Information” shown again? Confirm if he makeup type on unit information and that of the makeup just replaced are the same, and input again the lot number of replaced makeup on “Unit information”...
  • Page 302 6.3.19a (N1)Free layout printing failure (N1)Free layout printing failure Delete the specific print items or Decrease the Ink drop use rate. ( ex. 1/2→1/3) Does the fault recur? Resume the operation. 6.3.19b (N2)Free layout printing failure (N2)Free layout printing failure Delete the specific print items or Decrease the Ink drop use rate.
  • Page 303 6.3.20 Print data changeover error C/T/M Print data changeover error C/T/M Set IJP to STOP mode, and Is IJ printer in STOP mode? Does the fault recur? then edit the message again. when the printer is stopped. Initialize system in IJP, and then edit the message again.
  • Page 304 6.3.21 Ink Level Sensor Broken (1)(3) Ink Level Sensor (*1): When you replace EZJ133 board, refer to [Replacement Broken (1)(3) procedures of EZJ133 board] in “3.3.1 EZJ133 board (MPU board)”. Go to “Level sensor confirmation” [Caution] screen and check if all sensors in Ink Be sure to check that there is no wrong connection of harnesses reservoir work properly.
  • Page 305 6.3.22 Makeup Level Sensor Broken (1)(4) (*1): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 Makeup Level Sensor board] in “3.3.1 EZJ133 board (MPU board)”. Broken (1)(3) [Caution] Be sure to check that there is no wrong connection of harnesses by referring to [Connector numbers and Identifying method of harnesses] in “3.3.20 Electrical Connection Diagram”.
  • Page 306 6.3.23 Vision sensor Connection Error Vision sensor Connection Error Does the Baud rate of Vision Set Baud rate to the same values sensor conform to that of for both Vision sensor and IJ printer. IJ printer ? Does the fault recur? Are Vision sensor and EZJ129 Connect Vision sensor and EZJ129 board connected properly ?

  • Page 307: Warning Conditions (Printing Continuously Performed)

    6.4 Warning conditions (printing continuously performed) 6.4.1 Excitation V-ref. Review, Excitation V-ref. Review 2 Excitation V-ref. Review Excitation V-ref. Review 2 Readjust the excitation setup of nozzle1 and nozzle2. Readjust the excitation setup of nozzle1 and nozzle2. Resume the operation. Resume the operation.
  • Page 308 6.4.3 Viscosity Readings Out of Range Viscosity Reading Out of Range (*1) (*2): When you disassemble and clean or replace the Viscometer, refer to “4. 12 Troubleshooting when Fault Occurs in Viscometer”. Perform the viscometer operation test on the Circulation system control screen.
  • Page 309 6.4.4 High Ink Viscosity High Ink Viscosity Check the printing quality. Is the printing quality normal? Replace the ink. Operate the printer for an hour or so, and check the ink viscosity. Has the viscosity increased? Replace the ink in the ink reservoir. Resume the operation.
  • Page 310 6.4.6 Battery Low M Battery Low M Is the EZJ133 board CN14 connector disconnected or in poor contact? Remove the connector once and Replace the battery of reconnect it EZJ133 board.*1 (*1): When you replace the battery of EZJ133 board, refer to【Replacement procedures of battery】in “3.3.2 Battery”...
  • Page 311 6.4.8 Excitation V-ref. Char. Height Review Excitation V-ref. Char. Height Review Readjust the excitation setup of nozzle1 and nozzle2. Resume the operation. 6.4.9 Ink Shelf Life Exceeded Ink Shelf Life Exceeded Has the “Ink alarm time” preselected from the operation management screen elapsed since last ink replacement? Was the “Ink operating...
  • Page 312 6.4.10 Ambient Temperature Too High / Too Low Ambient temperature Too High / Too Low Is the Ambient temperature Properly set the Ambient upper-/lower-limit value temperature upper-/lower-limit erroneously set? value. Use an air-conditioner or the like Does the IJ printer to ensure that the IJ printer temperature indication agree with the ambient...
  • Page 313 6.4.11a (N1) Ink Pressure High (N1)Ink Pressure High Check the indicated value and standard value of the ink pressure of nozzle1 on “Operation management” screen. The indicated value of ink pressure in Nozzle1 exceeds the upper limit? (Standard value x 1.10 >Indicated value) Is the difference of ±0.01MPa or more in indicated value of ink pressure between Nozzle1...
  • Page 314 6.4.11b (N2) Ink Pressure High (N2)Ink Pressure High Check the indicated value and standard value of the ink pressure of nozzle2 on “Operation management” screen. The indicated value of ink pressure in Nozzle2 exceeds the upper limit? (Standard value x 1.10 >Indicated value) Is the difference of ±0.01MPa or more in indicated value of ink pressure between Nozzle1...
  • Page 315 6.4.12 Battery Low C Battery Low C Is the EZJ128 board CN8 connector disconnected or in poor contact? Remove the connector once and Replace battery reconnect it EZJ128 board. *1 Does the fault recur? Replace the EZJ128 board.*2. Resume the operation.
  • Page 316 6.4.13a (N1) Ink Pressure Low (N1) Ink Pressure Low Confirm the indicated value and standard value of ink pressure in Nozzle1 on “Operation management” screen. (*1): When you replace pressure reducing valve, refer to “4.3 Pressure Reducing Valve Replacement Procedure”. The indicated value of ink pressure in Nozzle1 exceeds the lower limit? (*2): When you replace pressure sensor1, refer to “4.6.1...
  • Page 317 6.4.13b (N2) Ink Pressure Low (N2) Ink Pressure Low (*1): When you replace pressure reducing valve, Confirm the indicated value and standard value of ink pressure in Nozzle2 on “Operation management” screen. refer “4.3 Pressure Reducing Valve Replacement Procedure”. (*2): When you replace pressure sensor2, refer to The indicated value of ink pressure in Nozzle2 exceeds the lower limit? “4.6.2 Pressure Sensor (Nozzle 2) Replacement...
  • Page 318 6.4.14 Product Speed Matching Error Product Speed Matching Error The frequency of the encoder signal is exceeding the printing capability of the IJ printer. Lower the frequency of the encoder signal, or increase its dividing ratio. Note that the printed character width will change if the Pulse rate div.
  • Page 319 6.4.16a (N1) Makeup Eject Pressure Low (N1) Makeup eject Pressure Low Replace makeup filter1. Is the problem fixed? Does MV8 operate? Replace MV8. Is the problem fixed? Replace the makeup pump. Resume the operation 6.4.16b (N2) Makeup Eject Pressure Low (N2) Makeup eject Pressure Low Replace makeup filter2.
  • Page 320 6.4.17 Inside Temperature Too High ●The Ink recovery behavior of Acetone-based ink degrades as the inside temperature gets high. ※ Both MEK-based ink and Ethanol-based ink have similar characteristics in which the ink recovery behavior degrades as the inside temperature gets high. However, particular attention shall be given to Acetone-based ink.
  • Page 321 6.4.18 Parts Life Expired Parts Life Expired Open “Periodic replacement parts mgmt.” screen and check the parts whose operation time exceeded the alarm time. Turn OFF the power. Replace the parts whose operation time exceeded the alarm time. Turn ON the power. Open “Periodic replacement parts mgmt.”...
  • Page 322 6.4.19 Ink Level Sensor Broken (2) (Follow the same procedure for “Ink Low Warning 2” and “Ink Low Fault 2”.) Ink Level Sensor Broken (2) Go to “Level sensor confirmation” screen Replace the sensor block and check if all sensors of Ink reservoir.
  • Page 323 6.4.20 Makeup Level Sensor Broken (2) (Follow the same procedure for “Makeup Low Warning 2” and “Makeup Low Fault 2”.) Makeup Level Sensor Broken (2) Go to “Level sensor confirmation” screen Replace the sensor block and check if all sensors of Makeup reservoir.

  • Page 324: Faults - No Indication On Screen

    6.5 Faults – No indication on screen 6.5.1 Chipped print (lower dots) Chipped print Direction of Is the ink stream deflection positioned at the center of the gutter? Adjust the ink stream Missing dots position so that the ink Is the ink pressure stream is centered with higher than the respect to the gutter.
  • Page 325 6.5.2 Chipped print (upper dots) Missing dots Chipped print Direction of Is the ink stream deflection positioned at the center of the gutter? Adjust the ink stream position so that the ink Is the ink pressure stream is centered with lower than the respect to the gutter.
  • Page 326 6.5.3 Varying character height Varying character height Is optimum clearance provided between the nozzle head end and print target? Optimize the clearance between the nozzle head end and print target. Was the character height setting changed? Adjust the character height setting. Is the ink pressure within the specified range?
  • Page 327 6.5.4 Increased character distortion Increased character distortion Is optimum clearance provided between the nozzle head end and print target? Optimize the clearance between the nozzle head Is the ink pressure end and print target. higher than the specified limit? Has the operating Can the ink pressure time exceeded the ink be adjusted?
  • Page 328 6.5.5 Disordered characters Disordered characters Are the upper or lower print dots lost? See under “Chipped print”. Is the upper end of the print blotted? Is the operating temperature with the specified limits? Ensure that the operating temperature is within the specified limits.
  • Page 329 6.5.6 Ink leakage/blowout Ink leakage/blowout Is the ink stream bent, dislocated from the gutter, or hit the edge of gutter? Clean the orifice plate and the inside and outside of the nozzle head cover with the makeup, and then allow them to thoroughly dry.
  • Page 330 6.5.7 No Printing is made in “Ready” state No printing is made. Does the obtained Is the printer in the Is the print start print consist of “Ready” state? signal entered? spaces only? Check the print Is the “Product target detector Enter characters speed matching”...
  • Page 331 (*1): When replace EZJ125 board, refer [Replacement procedures of EZJ125 board] in “3.3.5 6.5.8a (N1) No ink ejection from nozzle1 EZJ125 board (Nozzle1 drive board)”. (*2): When replace EZJ133 board, refer No ink ejection [Replacement procedures of EZJ133 board] in “3.3.1 from nozzle1 EZJ133 board (MPU board)”.
  • Page 332 (*1): When you replace EZJ133 board, refer to 6.5.8b (N2) No ink ejection from nozzle2 [Replacement procedures EZJ133 board] in “3.3.1 EZJ133 board (MPU No ink ejection board)”. from nozzle2 [Caution] Be sure to check that there is no wrong Is ink pressure of connection harnesses...
  • Page 333 6.5.9 Freeze of display *) “Freeze of display” means the condition that the touch screen operation is not available without error message indication. Freeze of display Turn OFF and ON the power switch. (*1): When you replace EZJ133 Can the touch screen be board, refer to [Replacement operated normally? procedures of EZJ133 board]...
  • Page 334 6.5.10 Problems due to inappropriate ink stream position in charged electrode If the ink stream does not pass through the center of charge electrode, the problems > bellow may occur: (1) The height of printed characters may become larger than the standard height. (2) Since the ink drops are not charged normally: - The print quality may be degraded (distorted characters).
  • Page 335 6.5.11 Problems due to inappropriate ink stream position to gutter If the ink stream does not enter the center of gutter, the following problems may occur: > (1) The ink stream hits the inner wall of gutter inlet and “splash” occurs. This will make the gutter dirty, causing either excessive charging or no charge on ink drops.
  • Page 336 6.5.12 Increase of dot missing - “Dot missing” is the phenomenon in which some of the dots comprising a character are lost. Deflecting missing Generally, one dot missing per several thousand direction dots may occur in the normal situations, but this dot missing may increase if the abnormal state as follows are continued: (1) IJ printer was left in the state that the ink was not ejected due to nozzle clogging,...
  • Page 337 6.5.13 Charge-related faults and Occurrence conditions - The charge-related faults and their occurrence conditions are described below model by model. Model KX Faults Ink ejection Occurrence conditions This fault is determined by APH waveform in only “Ready” state. No Ink Drop Stopped Charge This fault is issued when APH signal is not detected in a given...
  • Page 338 6.5.14a (N1) Failure of adjustment of excitation voltage Failure of adjustment of excitation voltage Disconnect EZJ125 board CN5 Is the EZJ125 board CN5 Resume the connector once, and reconnect it connector disconnected or operation. correctly. in poor contact? Is DSW1 of When the adjustment Is the excitation Is “EZJ125 A”...
  • Page 339 6.5.14b (N2) Failure of adjustment of excitation voltage Failure of adjustment of excitation voltage Disconnect EZJ134 board CN1 Is the EZJ134 board CN1 Resume the connector once, and then connector disconnected or operation. reconnect it correctly. in poor contact? When the adjustment Is the excitation Is DSW1 of EZJ134 board fails, is the voltage of...
  • Page 340 6.5.15 System Error *) This alarm is displayed when download failed. (*1): When you replace EZJ133 board, refer System Error ** to [Replacement procedures of EZJ133 board] in “3.3.1 EZJ133 board (MPU board)”. Insert the system-data USB memory and (*2): When you replace EZJ 128 board, refer turn the power switch ON.
  • Page 341 6.5.16 Power does not turn ON after pressing Start button (*1): When you replace EZJ114 board, Power is not refer to [Notes in case of the board turned ON. replacement] in “3.3.11 EZJ114 board (LED / SW board)”. (*2): When you replace EZJ113 board, Does the trouble fixed when the connetors refer to [Replacement procedures below are disconnected once and reconnected?
  • Page 342 6.5.17 Power does not turn OFF after pressing Stop button (*1): When you replace EZJ114 board, Power does not refer to [Notes in case of the board turn OFF replacement] “3.3.11 EZJ114 board (LED / SW board)”. (*2): When you replace EZJ113 board, refer Does the trouble fixed when the connetors [Replacement procedures...
  • Page 343 6.5.18 No ink suction from gutter No ink suction from gutter Is the tube of recovery line or exhaust line folded? Or, is ink clogged? Replace the tube or clean the tube. Is the problem fixed? Does MV3 (nozzle1) and MV23 (nozzle2) operate? Repair the ink fixing of MV3 (nozzle1) and MV23...
  • Page 344 6.5.19 Power Restoration Procedure Power Restoration Procedure Is the EZJ133board CN1 connector disconnected or in poor contact? Is the EZJ128 board CN1 connector disconnected or in poor contact? Remove the connector once and Replace the EZJ133 board.*1 reconnect it. Does the fault recur? Replace the EZJ128 board.*2 Resume the operation.
  • Page 345 6.5.20 Startup process after long-term shutdown and How to restore the operation “Restart Operation After Long-Term Shutdown” Solenoid valve verification Are the valve(MV1 to 9, 11, 12, Refer to “4.5 solenoid valve replacement” and/or “5.5 Shutoff valve 23, 25, 28, 29) making (MV9, MV29) replacement”...

  • Page 346: Firmware Download Failure

    6.5.21 Firmware download failure Firmware download failure Insert the system USB to USB slot then turn the power ON. Internal communication error occurred? Download is restart? Download is complete properly? Do the system reset by rescue soft. Download is complete properly? Replace the EZJ133 board.
  • Page 347 6.5.22 Language download failure Language download failure (*1): When you replace EZJ 128 board, refer to [Replacement procedures of EZJ128 Insert the system USB to USB slot then turn on printer. board ] in “3.2.1 EZJ128 board (controller board)”. Go to Language select screen with (*2): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 service personnel maintenance mode.
  • Page 348 6.5.24 Ink deposition on Printhead cover s the ink is ejected onto the print target, during IJ printer operation, the printhead cover (inside/outside) will be stained by the ink splashes back from the print target. To prevent IJ printer from printing malfunction caused by the ink staining on Printhead, check the condition of the printhead cover periodically and clean it as necessary.
  • Page 349 6.5.25 Cartridge-ID read failure Cartridge-ID read failure (*1): When you replace RFID reader, refer to [Procedures of RFID reader replacement] in “3.3.19 RFID reader”. (*2): When you replace EZJ133 board, refer to Is the distance Move the cartridge bottle [Replacement procedures of EZJ133 between cartridge closer to “Scan here”...
  • Page 350 6.5.26 Solenoid unlock failure (*1): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 Solenoid unlock board] in “3.3.1 EZJ133 board (MPU board)”. failure [Caution] Be sure to check that there is no wrong connection of harnesses by referring to [Connector numbers and Identifying method of harnesses] in “3.3.20 Electrical Connection Diagram”.
  • Page 351 6.5.27 IC Card read error (*1): When you replace RFID IC Card read error reader, refer to [Procedures of RFID reader replacement] in Was the message “RFID “3.3.19 RFID reader”. Reader Failure” issued? (*2): When you replace EZJ133 board, refer to [Replacement procedures of EZJ133 board] in “3.3.1 Is the distance between...

  • Page 352: Attached Drawing

    7. Attached Drawing 7.1 Circulation System Diagram...

  • Page 353: Tube Connection Diagram

    7.2 Tube Connection Diagram (1) Circulation unit : front view Viscometer Pressure reducing valve Makeup filter Pressure sensor (2) Circulation unit : back view...

  • Page 354: Electrical Connection Diagram

    7.3 Electrical Connection Diagram...

  • Page 355: Dimensions Around Charge Electrode And Deflection Electrode

    7.4 Dimensions around charge electrode and deflection electrode 【Nozzle diameter : 65μm】 Nozzle 2 side Nozzle 1 side...

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