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Domino Macrojet 2 Product Manual

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  • Page 1 Domino Macrojet 2 Product Manual...

  • Page 2: Issue 7 Jan

    THIS PAGE INTENTIONALLY LEFT BLANK 20509 Issue 7 Jan 2018...

  • Page 3: Part

    DOMINO MACROJET 2 PRINTER PRODUCT MANUAL This manual, Domino Part No. 20509, is for use in the operation and repair of the Domino Macrojet 2 printer. This manual is for use with all Macrojet printers manufactured on or after 1st Feb 2018 (from Serial Number L-21826 onwards).
  • Page 4 No. Doc-0009847_R02 Manufacturers name: Domino UK Ltd. Manufacturers Address: Bar Hill, Cambridge CB23 8TU This declaration of conformity is issued under the sole responsibility of the manufacturer. Object of the declaration: Domino Macrojet, from serial number L21548 The object of the declaration described above is in conformity with the relevant Union harmonisation legislation: ...
  • Page 5 20509 Issue 7 Jan 2018...

  • Page 6: Part

    FCC Notice This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
  • Page 7 CONTENTS PART 1 HEALTH AND SAFETY PART 2 DESCRIPTION PART 3 MAINTENANCE PROCEDURES PART 4 FAULT FINDING AND REPAIR PART A INSTALLATION 20509 Issue 7 Jan 2018...
  • Page 8 AMENDMENT RECORD Amendment Date All Parts at Issue 1 Feb 91 Following pages amended to Issue 2.0: July 91 Preface-7, 1-4, 1-5, 3-32, 4-11, 4-13, 4-17, 5-17, A2, A20. All pages at Issue 3 April 92 All pages at Issue 4 July 95 All pages at Issue 5 April 99...

  • Page 9: Table Of Contents

    PART 1 : HEALTH AND SAFETY CONTENTS Page Introduction ..................Basic Requirements ................. Storage .................... Fire Risk ................... Spillages and Disposal ..............20509 Issue 7 Jan 2018...
  • Page 10 HEALTH AND SAFETY THIS PAGE INTENTIONALLY LEFT BLANK 20509 Issue 7 Jan 2018...

  • Page 11: Introduction

    HEALTH AND SAFETY INTRODUCTION Domino supplies Safety Data Sheets (SDS) giving specific safety information with each of its ink, make-up and wash fluids. There are also warnings on each container. The following notes are for general guidance only. Basic Requirements When used correctly, printing inks do not cause problems.

  • Page 12: Storage

    HEALTH AND SAFETY Certain inks are allowed for use where they can be in indirect contact with food. In these cases, the following precautions must be observed in addition to those appropriate to hygiene: • The inks must only be used in printers supplied from new for use with these inks.

  • Page 13: Spillages And Disposal

    HEALTH AND SAFETY quickly by the fire fighting service, and where it will not spread beyond the store. Spillages and Disposal WARNING: Some dried inks are highly flammable. Clean up all ink spillages immediately. Do not allow the ink to dry or allow any build-up of dried ink spills. Spillages must be cleaned up as soon as possible with the appropriate solvent materials and with regard to the safety of personnel.
  • Page 14 HEALTH AND SAFETY THIS PAGE INTENTIONALLY LEFT BLANK 20509 Issue 7 Jan 2018...
  • Page 15 DESCRIPTION PART 2 : DESCRIPTION CONTENTS Page Introduction ..................Printer Specification ................Print Heads ..................Print Characteristics: ................ Cabinet .................... Print Heads ..................Environment ..................Electrical Requirements ..............Supply Fuse Rating ................Inputs ....................External Alarms ................Print Head ..................... Control Cabinet ..................
  • Page 16 DESCRIPTION This page intentionally left blank 20509 Issue 7 Jan 2018...
  • Page 17 DESCRIPTION Ink Box Control Cabinet Print Head TP1006_1 Macrojet 2 Large Character Printer 20509 Issue 7 Jan 2018...

  • Page 18: Introduction

    Quick Connect/Disconnect (QCD) connector. Messages to be printed are normally entered as serial digital data from a Domino Pocket Terminal, but it is also possible to control the printer from a separate computer system (details from Domino).

  • Page 19: Printer Specification

    DESCRIPTION PRINTER SPECIFICATION Print Heads 7 or 16 drop nozzle heads. Multiple heads in combinations of: • Up to 4 heads each of 7 nozzle size, or • Up to 2 heads each of 16 nozzle size, or • 1 head of 16 nozzle size and 1 head of 7 nozzle size, or •...

  • Page 20: Environment

    DESCRIPTION Environment Temperature Range +5º to +40ºC (42ºF to 104ºF) (Operating): Humidity: 10 - 90% RH (non-condensing) Electrical Requirements Supply Voltage: 110V, 130V, 150V, 220V, 240V, 260V, single phase with ground. Power: 300VA Supply frequency: 50/60Hz Supply Fuse Rating Power switch: 2A (220-260V) 4A (110 - 150V) Inputs...

  • Page 21: Print Head

    Drops are, therefore, only produced as required in what is known as Drop-on-Demand printing. Macrojet 2 print heads have either 7 or 16 nozzles producing a line of drops called a stroke on the print surface. As the print surface moves past the head, successive strokes containing different combinations of ink drops build up the character in the form of a dot matrix.
  • Page 22 3 to 5mm for best print quality. At distances outside these limits, print quality will be reduced. Macrojet 2 has a number of print head and print options. The print options are shown in the diagrams (see page 2-9 and page 2-10).
  • Page 23 DESCRIPTION Single line 7 x 5 matrix. TP1410_1 Twin line 7 x 5 matrix. TP1412_1 Single line 16 x 10 matrix. TP1413_1 Single line 16 x 10 and 7 x 5 matrix (top or bottom line). TP1414_1 Standard Character Printing Styles 20509 Issue 7 Jan 2018...
  • Page 24 DESCRIPTION Single line 5 x 5 matrix. TP1415_1 Twin line 5 x 5 matrix. TP1417_1 Single line 5 x 5 and 7 x 5 matrix. TP1418_1 Single line 16 x 10 with single line 7 x 5 and single line 5 x 5 (top or bottom line) TP1419_1 Optional Character Printing Styles...

  • Page 25: Control Cabinet

    DESCRIPTION CONTROL CABINET The control cabinet is moulded in a structural foam material which is extremely strong, light and easy to clean. It is sprayed internally and externally with epoxy paint. A special coating providing RF shielding is also applied to the internal surfaces. The cabinet consists of a base, holding the ink and electronics systems, and a cover fitted over the top.

  • Page 26: Ink System

    DESCRIPTION INK SYSTEM General The ink system draws in ink from the ink supply container and supplies it under pressure to the print head. The system is governed by switches which control the ink pressure and detect when the ink container is empty. Priming Port Bleed Valve Ink Manifold...
  • Page 27 DESCRIPTION 20509 Issue 7 Jan 2018 2-13...

  • Page 28: Ink System

    DESCRIPTION INK SYSTEM The ink system is shown schematically in the diagram opposite. Fresh ink is contained in a 5 litre disposable ink container, which consists of a flexible bag protected by a robust cardboard box. The ink container is connected using a special quick QCD connector.
  • Page 29 DESCRIPTION Solenoid Driver Universal Serial Interface PCB Rear Panel Assembly Low Voltage Power Supply Front Panel Assembly Motherboard Power Transformer TP1390_2 Electronics Components 20509 Issue 7 Jan 2018 2-15...

  • Page 30: Electronic System

    Print Go signal to the printer. Macrojet 2 is able to use two detectors, with assignment of print heads to detectors being set up with the Pocket Terminal. For details see Pocket Terminal User's Guide, Part Number 20524.

  • Page 31: Controls And Indicators

    DESCRIPTION Controls and Indicators Controls and indicators are shown in the diagram below. The supply power on/off switch also contains a fuse (see page 4-30) which is rated to support the printer together with any equipment connected to the Auxiliary Power connector block.

  • Page 32: Universal Serial Interface Pcb

    The Universal Serial Interface PCB contains circuits for the RS232 interface, real time clock, stroke generator, product detector inputs and printed stroke output. When Macrojet 2 is powered down, a battery backup automatically maintains the RAM and clock in standby.
  • Page 33 DESCRIPTION 20509 Issue 7 Jan 2018 2-19...

  • Page 34: Motherboard

    (see page 4-38 and page A-8). Product Detector With a fixed product speed past the print head, the Macrojet 2 may be set up to use a fixed print speed and operate with one of the following types of detector: •...
  • Page 35 DESCRIPTION The shaft encoder is attached to the product line and produces electrical pulses as it revolves. There are a fixed number of pulses to each revolution. The printer is set up so that character stroke rate or print speed is controlled by these pulses instead of by the internal character width control (see LK6 on page 4-35).

  • Page 36: External Connections

    Alternatively, SK1 and SK3 can be used to loop a single product detector to another Macrojet 2 in an extended system. Where a second product detector is used this must be connected into SK2. Pin connections...

  • Page 37: Pocket Terminal Connector (Data Entry 25-Way D Connector)

    DESCRIPTION Pocket Terminal Connector (Data Entry 25-way D Connector) SIGNAL SIGNAL Tx +ve RS232 Data In Rx +ve RS232 Data Out -12V CTS (Input) 20mA ENABLE RTS (Output) +12V Tx -ve Rx -ve 20mA Source Data Input Pin Connections For RS232 operation, pins 13 and 24 are linked to disable the 20mA loop. Pins 4 and 9 may also be linked to set CTS.
  • Page 38 DESCRIPTION THIS PAGE INTENTIONALLY LEFT BLANK 2-24 20509 Issue 7 Jan 2018...
  • Page 39 MAINTENANCE PROCEDURES PART 3 : MAINTENANCE PROCEDURES CONTENTS Page Routine Maintenance ................Cleaning the Nozzle Plate ..............Purging the Print Head ..............Bleeding the Ink System ..............2000HR Maintenance ................Access to the Cabinet and Print Heads ........... Ink Filter Replacement ..............Checking Drop Size .................
  • Page 40 MAINTENANCE PROCEDURES THIS PAGE INTENTIONALLY LEFT BLANK 20509 Issue 7 Jan 2018...

  • Page 41: Routine Maintenance

    Power to the printer must be removed before carrying out any maintenance. The main requirement is cleanliness. Keep Macrojet 2 clean and it will give little trouble. The following procedures will make sure that print quality does not deteriorate.

  • Page 42: Purging The Print Head

    MAINTENANCE PROCEDURES Purging the Print Head The purge switch on the print head operates all solenoids continuously, to sweep out traces of air and dirt. Purge TP2105-1 Switch Move a piece of card across the nozzle plate, at the same time operate the purge switch.

  • Page 43: Bleeding The Ink System

    MAINTENANCE PROCEDURES Bleeding the Ink System At regular intervals, normally once a day, the ink system must be bled to prevent the build up of air in the system. (1) Set the Pump Inhibit switch on the rear panel to position 0. Note: The light in the switch will extinguish.

  • Page 44: 2000Hr Maintenance

    MAINTENANCE PROCEDURES 2000HR MAINTENANCE Access to the Cabinet and Print Heads The cabinet cover is lifted off after removing the four securing screws. Note: The cover has a ground wire connected by a snap connector. Make sure this wire is connected whenever replacing the cover. Securing Screws TP2105-1...
  • Page 45 MAINTENANCE PROCEDURES O-Ring Gasket Cover Connector Securing Screws TP2104-1 Spring Diaphragm End Cap O-Rings TP3395-2 20509 Issue 7 Jan 2018...
  • Page 46 MAINTENANCE PROCEDURES (5) Continue to allow ink to escape until the ink system pressure has fallen to zero. Leave the print head valve fully open. (6) Place tissue in the cabinet base to catch any escaping ink. (7) Unscrew the filter end cap. (8) Remove the outer and inner O-Rings and the filter.

  • Page 47: Checking Drop Size

    MAINTENANCE PROCEDURES Checking Drop Size All dots printed by a print head must be the same diameter. The diameter must be 2.5 to 3.0mm for 12, 16, 20, 32 & 50mm heads. Diameter Purge Switch TP2103-1 (1) Remove, clean and replace the nozzle plate (see page 4-9).

  • Page 48: Fan And Filter Check

    MAINTENANCE PROCEDURES (1) Remove the print head cover. (2) Turn the intensity control to maximum (fully clockwise). Perform a drop size check to obtain a print sample. (3) Check the printed dots and identify the solenoids that need adjusting. (4) Loosen the locknuts which secure these solenoids. (5) Adjust the solenoids counter-clockwise to increase dot size or clockwise to reduce dot size.

  • Page 49: Changing Inks

    MAINTENANCE PROCEDURES CHANGING INKS Changing to New Ink with same Solvent Base The procedure is to flush the printer with solvent appropriate to the ink type in use, then to connect an ink supply container with the new ink and bleed all the heads until the new ink flows through.
  • Page 50 MAINTENANCE PROCEDURES Note: This procedure assumes the printer has more than one print head. If only one head is fitted, the basic procedure is the same. Flushing Procedure. (1) Disconnect the QCD from the ink supply container. (2) Make sure that the Pump Inhibit switch is set to 0 (Inhibit). (3) Close the valve on each print head and remove the heads from their mountings.

  • Page 51: Changing To New Ink With Different Solvent Base

    MAINTENANCE PROCEDURES Changing to New Ink with different Solvent Base CAUTIONS: If MEK base ink is to be changed to water base ink, the ink system must be meticulously flushed to prevent ink contamination. Extreme care must be taken to remove all traces of the old ink. In older printers it may be necessary to replace some pipes to thoroughly remove the ink.
  • Page 52 MAINTENANCE PROCEDURES THIS PAGE INTENTIONALLY LEFT BLANK 3-14 20509 Issue 7 Jan 2018...
  • Page 53 FAULT FINDING AND REPAIR PART 4 : FAULT FINDING AND REPAIR CONTENTS Page Introduction ..................Faults Related to the Ink System ............Faults Related to the Print Head ............Faults Related to the Electronic System ..........User Related Faults ................Print Quality Faults ................

  • Page 54: Introduction

    This part of the manual provides help in identifying the causes of problems and gives repair procedures. Certain repairs should only be carried out by trained personnel, and it is recommended that the printer or sub-assembly is returned to Domino or a distributor. FAULTS RELATED TO THE INK SYSTEM Indication...
  • Page 55 FAULT FINDING AND REPAIR Indication Possible Cause Remedy Pump runs Air leak in inlet line at ink Check condition of ink intermittently with container fitting container QCD and feed ink container line empty Air leak at inlet filter Check tightness of fittings Back leakage through Check condition of NRV.

  • Page 56: Faults Related To The Print Head

    FAULT FINDING AND REPAIR FAULTS RELATED TO THE PRINT HEAD Indication Possible Cause Remedy One or more Dirty nozzles Clean nozzles. (see page nozzles not 3-3) working (new Stuck plunger Check condition of head) plunger and replace slug if necessary. (see page 4-11) Solenoid has weak pull...

  • Page 57: Faults Related To The Electronic System

    FAULT FINDING AND REPAIR FAULTS RELATED TO THE ELECTRONIC SYSTEM Indication Possible Cause Remedy Fuse blows Incorrect rated fuses Fit correctly rated fuses repeatedly fitted in main switch (see page 4-30) Voltage selector setting Adjust to line voltage incorrect (see page 2-17) Encoder not Link on motherboard in...

  • Page 58: Print Quality Faults

    FAULT FINDING AND REPAIR Machine will not Data entry sequence not See Pocket Terminal print terminated Instructions Heads are not turned on See Pocket Terminal Instructions Heads are not assigned See Pocket Terminal to product detectors Instructions PRINT QUALITY FAULTS Before investigating faults further: •...
  • Page 59 FAULT FINDING AND REPAIR (4) Pressure too low (see page 4-21, steps (7) and (8)) or intensity too low. TP3043-1 (5) Pressure too high (see page 4-21, steps (7) and (8)) TP3044-1 (6) Incorrect solenoid adjustment - note varying drop sizes (see page 3- TP3045-1 (7) Air in print head - note drops not properly formed...

  • Page 60: Print Head

    FAULT FINDING AND REPAIR (9) Tails forming on printed drops - surface speed too high - reduce intensity (see page 2-17). TP3048-1 PRINT HEAD Bleeding the Print Head The printer should be switched on, with the Pump Inhibit switch in position 1 and the ink system properly primed.

  • Page 61: Removing The Nozzle Plate

    FAULT FINDING AND REPAIR Removing the Nozzle Plate It may be necessary to remove the nozzle plate for cleaning if it becomes blocked. This could occur after a period out of use, such as during repair or after a long shutdown. WARNING: The printer must be switched off before removing the nozzle plate.

  • Page 62: Testing A Solenoid

    FAULT FINDING AND REPAIR Testing a Solenoid The solenoids operate the print valves by pulling a slug into their centre. This pull must therefore be correct as part of producing the correct drop size. The printer should be switched on. Arrange a container to catch ink from the head during step(5) (1) Disconnect the solenoid wiring from the connector.

  • Page 63: Replacing A Solenoid

    FAULT FINDING AND REPAIR Replacing a Solenoid The printer should be switched off and the print head cover removed. (1) Disconnect the solenoid wiring from the connector. (2) Loosen the locknut sufficiently to release the solenoid. (3) Unscrew the solenoid and pull it off the mounting tube, leaving the locknut to mark the original solenoid position.
  • Page 64 FAULT FINDING AND REPAIR (5) Apply a thin film of silicone grease to the new plunger slug and insert into the top of the insertion tool sleeve. Push down a short way with the insertion pin. Sleeve Insertion Pin TP3384-1 (6) Fit the barrel of the insertion tool onto the control wire.
  • Page 65 FAULT FINDING AND REPAIR TP3383-1 (9) Fit the insertion pin into the sleeve and push the new slug into the plunger. Push only until the slug is felt to be fully inserted excessive force will damage the slug. (10) Remove the insertion pin and sleeve. Pull out the plunger and control wire sufficiently to remove the barrel.
  • Page 66 FAULT FINDING AND REPAIR Solenoid Connections 4-14 20509 Issue 7 Jan 2018...

  • Page 67: Replacing A Print Head

    FAULT FINDING AND REPAIR Replacing a Print Head The printer should be switched off and the print head cover removed. (1) Close the valve on the print head by turning the knob fully clockwise. (2) Place a 500 ml beaker under the nozzle plate. A suitable beaker is supplied in the tool kit.

  • Page 68: Ink System

    FAULT FINDING AND REPAIR INK SYSTEM WARNING: The ink system MUST BE DEPRESSURISED before any work is done on it. After the work is completed the ink system must be pressurised again. Procedures for both of these are included below. Whenever an ink pipe is disconnected, clean the pipe and its fittings and check that they are undamaged.

  • Page 69: Pressurising The Ink System

    FAULT FINDING AND REPAIR Pressurising the Ink System It is assumed that work on the ink system has been completed and all connections, etc. are tight. Correct working also depends on the accumulator being fully inflated to its correct shape at zero pressure. If there is any doubt about this, carry out the inflation procedure (see page - 26).
  • Page 70 FAULT FINDING AND REPAIR (7) Reconnect the feed tube to the QCD and connect the QCD to an ink supply container. (8) Restart the pump by setting the Pump Inhibit switch to 1. (9) Open the bleed valve on the rear panel momentarily by turning the knob counter clockwise and watch as ink is drawn through the feed pipe into the printer.

  • Page 71: Filter And Nrv Leaks

    FAULT FINDING AND REPAIR Filter and NRV Leaks External ink leaks may occur at an end cap. Check that the end caps and blanking plugs are tight. If the leak continues replace the outer O-Ring. Faults in the ink system can also be caused by ink leaking back through a faulty NRV.

  • Page 72: Refurbishing A Plain Nrv

    FAULT FINDING AND REPAIR (5) Clean and check the diaphragm and the O-Rings. Replace if worn or damaged. (6) Refit the diaphragm and spring. (7) Fit the inner O-Ring onto the end cap. (8) Fit the outer O-Ring into the groove in the manifold block. (9) Refit the end cap.

  • Page 73: Pressure Switch Replacement

    FAULT FINDING AND REPAIR (3) Remove the rubber diaphragm. (4) Flush out the NRV recess with wash. (5) Clean the diaphragm and O-Rings. Replace if worn or damaged. (6) Refit the diaphragm. (7) Fit the inner O-Ring onto the end cap. (8) Fit the outer O-Ring into the groove in the manifold block.
  • Page 74 FAULT FINDING AND REPAIR (4) Unscrew and remove the complete switch unit. (5) Apply Loctite 542 to the thread on the new pressure switch and screw into the manifold block. (6) Make sure a 6.8 ohm resistor is fitted to the switch, then connect the wires and fit the heat shrink sleeve and protective boot.

  • Page 75: Vacuum Switch Check

    FAULT FINDING AND REPAIR Vacuum Switch Check The vacuum switch is set to detect a pressure drop of 8 to 10 inches of mercury (2.76 to 3.45 kilogrammes per sq cm) when the pump draws on an empty ink container. To check the vacuum switch the printer must be switched on.

  • Page 76: Vacuum Switch Replacement

    FAULT FINDING AND REPAIR Vacuum Switch Replacement Note: The vacuum switch contains delicate components and must be handled with care. It is also factory set and should not be adjusted. Vacuum Switch TP3398-2 The printer must be switched off and the cabinet cover removed. Place tissue in the cabinet base to catch escaping ink.

  • Page 77: Pump Replacement

    FAULT FINDING AND REPAIR Pump Replacement The pump is a reliable unit and before being replaced all other possible causes of failure to pressurise the system should be investigated. This includes leaks in the system. The printer must be switched off and the power removed. Remove the cabinet cover and place tissue in the cabinet base to catch escaping ink.

  • Page 78: Accumulator Check

    FAULT FINDING AND REPAIR Accumulator Check The accumulator provides the working reservoir of ink. It has a reserve capacity of approximately 70ml, provided by compressing air behind a rubber diaphragm. It may be necessary to check if a leak in the diaphragm or the accumulator air seal has caused a reduction in the ink reserve.
  • Page 79 FAULT FINDING AND REPAIR (2) Close the valve on the print head. (3) Place a beaker under the print head nozzle plate. Unscrew the screws securing the nozzle plate sufficiently to release the pressure in the print head. (4) Slowly open the print head valve to release any pressure in the ink circuit.

  • Page 80: Refurbishing The Accumulator

    Refurbishing the Accumulator Note: A faulty accumulator should normally be replaced. Replacement modules are assembled and tested by Domino to production standards. Refurbishment in the absence of trained staff and proper test equipment is not recommended. The ink system must be removed from the printer (see page 4-29).

  • Page 81: Removing The Ink System

    FAULT FINDING AND REPAIR pressure all round the clamp ring. Do not over tighten and damage the diaphragm. (11) Reconnect the pipe to the base of the accumulator cover. Note: Before the ink system is refitted into the printer and refilled with ink, make sure that the accumulator diaphragm is fully inflated.

  • Page 82: Electronic System

    FAULT FINDING AND REPAIR ELECTRONIC SYSTEM WARNING: Disconnect the power cable before removing the cabinet cover. Fuse Replacement A power fuse is fitted behind a small cover immediately above the power input connection on the rear panel. The value of this fuse depends upon the input voltage: •...

  • Page 83: Replacing The Universal Serial Interface Pcb

    FAULT FINDING AND REPAIR TP3466-1 (2) Each PCB is fitted into a socket on the motherboard. To remove a PCB, pull on the handle at the top after removing any cabinet wiring connectors. The PCB sockets and connectors are polarised and must be refitted into their correct positions.
  • Page 84 FAULT FINDING AND REPAIR In some cases, settings may differ to meet individual requirements. Therefore the options available are given in detail as follows. VBB battery link. This link is usually set to OFF when the PCB is in transit. It is essential that the link is set to ON before the PCB is inserted into the printer.
  • Page 85 FAULT FINDING AND REPAIR Motherboard LED 2 R/POT 1 2 3 4 LK2 E C A F D B U/P LINK L M N P J K W X Y Z VBB BATTERY LINK Universal Serial Interface PCB Link and Switch Settings for white T64/PT64 Pocket Terminal 4-33.eps 20509 Issue 7 Jan 2018...
  • Page 86 FAULT FINDING AND REPAIR Motherboard LED 1 LED 2 R/POT 1 2 3 4 LK2 E C A F D B U/P LINK L M N P J K W X Y Z VBB BATTERY LINK Universal Serial Interface PCB Link and Switch Settings for blue T14 Pocket Terminal 4-34.epc Where a printer is installed with the VBB Battery link already set to ON, the...
  • Page 87 Internal control RV2 External control through R/Pot This link must be set to position AB. In the event of a major software change, consult Domino. U/P links These arrange the user port connections and consist of wire links between pins on a 10 way connector.

  • Page 88: Minimum Width Adjustment

    FAULT FINDING AND REPAIR BAUD RATE SW1/1 SW1/2 2400 9600 19200 SW1/3 SW1/4 CTS/RTS XON/XOFF Fault Bus Off Fault Bus On Minimum Width Adjustment The printer should be running and ready to print messages. (1) Locate potentiometer RV2 (preset minimum width control) on the top edge of the Universal Serial Interface PCB.

  • Page 89: Replacing A Solenoid Driver Pcb

    FAULT FINDING AND REPAIR Replacing a Solenoid Driver PCB This PCB has two sets of links. In normal replacement of a faulty PCB it is only necessary to set the positions of the links on the new PCB to those on the old PCB.

  • Page 90: Replacing The Motherboard

    FAULT FINDING AND REPAIR Replacing the Motherboard CAUTION: Anti-static precautions must be observed. (1) Remove the PCBs. (2) Note the wire connections on the motherboard, then remove them and the other connectors. (3) Lift out the motherboard after removing the eight securing screws and nylon washers.

  • Page 91: Fan Or Filter Replacement

    FAULT FINDING AND REPAIR Fan or Filter Replacement The printer must be switched off and the power connector removed. The cabinet cover must be removed. (1) Pull apart the inline connector in the fan wiring. (2) Unclip the filter cover and remove the filter. (3) If the fan is to be replaced, remove the four screws and take off the fan.

  • Page 92: Cabinet Wiring Component Replacement

    FAULT FINDING AND REPAIR Cabinet Wiring Component Replacement WARNING: It is essential that the power connector is removed before working on any part of the cabinet wiring. Most of the components are standard electrical components with self evident replacement procedures. Certain components (such as the power switch) and some connectors (such as the ground star point) use snap-on wiring connections.
  • Page 93 APPENDIX A : INSTALLATION CONTENTS Page Introduction ..................A-3 Printer Installation ................. A-4 Positioning the Control Cabinet ............A-4 Mounting the Print Head(s) .............. A-6 Electrical Supply ................A-7 Printer Internal Adjustments ..............A-8 Preparing the Serial Interface PCB ..........A-8 Preparing the Motherboard ..............
  • Page 94 INSTALLATION THIS PAGE INTENTIONALLY LEFT BLANK 20509 Issue 7 Jan 2018...

  • Page 95: Introduction

    • preparing the ink system • fitting and connecting the associated equipment. Macrojet 2 can be fitted with extra print heads after the printer has left the factory. This part of the manual therefore includes: • how to fit another print head.

  • Page 96: Printer Installation

    The ink container should be conveniently placed for regular replacement. The feed pipe to the ink container is 2 metres long. A stand to support the system is available from Domino part number 33210. The printer should not be put into an area where the temperatures go...
  • Page 97 INSTALLATION Print Heads Print Heads 12mm, 16mm, 20mm: Y=223 12mm, 16mm, 20mm: X=85 12mm Low: Y=273 32mm, 50mm: X=111 32mm, 50mm: Y=269 613 min Min. bend radius = 150 Container Centre Line of First Nozzle 2m Ink Feed 12mm, 16mm, 20mm: H=27.5mm Pipe 12mm Low: H=5mm...

  • Page 98: Mounting The Print Head(S

    Mountings must be rigid and free from vibrations, as these can cause a loss in print quality. Printing upwards may, for example, in dusty environments require special consideration. Consult Domino for advice. During mounting, if the head and conduit needs to be rotated, the conduit should be turned at its connection into the cabinet.

  • Page 99: Electrical Supply

    Macrojet 2 requires an input voltage in the range 110V to 260V, 50/60 Hz. The power cable is supplied with a moulded connector (US) or three wires (UK and Europe) which must be connected as follows: •...

  • Page 100: Printer Internal Adjustments

    INSTALLATION PRINTER INTERNAL ADJUSTMENTS Macrojet 2 has a number of internal switches and links which must be checked before switching on. Fitting some ancilliaries could also include making connections. These should be carried out by personnel with electronic equipment training.
  • Page 101 On start-up the Macrojet 2 will read the DIL switch selection. If they require resetting, switch the machine OFF and then reset the DIL switches. If the Macrojet 2 is not switched OFF it will ignore any changes to the DIL switch settings.
  • Page 102 INSTALLATION MOTHERBOARD 1 2 3 4 SW1 - SW4 SWITCH SETTINGS Switch Number Nozzle Stroke Size Ratio (mm) 12, 16, 20 Print Head 3 Print Head 1 Print Head 3 Print Head 2 Print Head 1 Print Head 4 Print Head 4 Print Head 2 Aspect Ratio Switch Settings A-10...

  • Page 103: Preparing The Ink System

    Connect the float valve and ink container (see instructions supplied with printer) If Macrojet 2 is supplied filled with ink (as normal) it is only necessary to: (1) Bleed the ink system (see the User's Pocket Book). (2) Purge the print head (see the User's Pocket Book).

  • Page 104: Product Detector Installation

    (see page 2-20). Macrojet 2 can be fitted with one or two sensors. Allocation of print heads to sensors is part of the data input to the printer, - see Pocket Terminal User's Guide. For basic coding, the product sensor should be positioned as close as possible to the print head.

  • Page 105: Proximity

    INSTALLATION Proximity This detector is fitted on the side of the product line and set up so that a light beam from the detector is reflected back by the product itself. The detector senses the reflected beam and the printing process starts when reflection either begins or ends.
  • Page 106 The detector is most sensitive with ferrous materials such as mild steel. It is less sensitive to materials like aluminium. Domino can provide further information and advice. Pin 5 = +12V...

  • Page 107: Shaft Encoder (Optional

    For internal printer adjustments, refer to the link selections in Part 3: Replacing the Universal Serial Interface PCB. Domino will provide advice on an appropriate encoder. As well as electrical factors, selection is based on the print width required and the line speed.
  • Page 108 INSTALLATION Single print, single space Single print, double space Bolderise print, single space = 12 Bolderise print, double space = 14 Double bolderise, single space = 24 Double bolderise, double space = 28 16x10 single space = 12 16x10 double space = 14 16x10 bolderise, single space = 24...

  • Page 109: Setting Character Width

    INSTALLATION SETTING CHARACTER WIDTH Note: This adjustment does not apply with a shaft encoder. The width of the characters printed by all heads is adjusted by the Character Width control on the rear panel. The individual character widths must be pre-set to be proportionally correct (see page A-8).

  • Page 110: External Alarms Connections

    INSTALLATION EXTERNAL ALARMS CONNECTIONS Wiring for external alarms is brought into the cabinet through one of the cable glands in the rear panel. The motherboard contains a relay providing a non-inductive switching facility. The relay contacts are brought out to pins 1, 2 &...
  • Page 111 INSTALLATION Print Head Feed Pipe Print Head Connector TP7175_2 Adding a new Print Head (8) Pass the ink feed pipe through the hole in the bulkhead plate. Continue sliding the connections and feed pipe into the cabinet until the conduit fits into the rear panel. (9) Screw on the retaining nut and washer.
  • Page 112 INSTALLATION EXISTING PRINT NEW PRINT MOTHERBOARD HEAD(S) HEAD SOCKET 1 x 7 nozzle head 1 x 7 nozzle head 2 x 7 nozzle heads 1 x 7 nozzle head 3 x 7 nozzle heads 1 x 7 nozzle head 1 x 16 nozzle head 1 x 7 nozzle head 1 x 16 &...
  • Page 113 INSTALLATION ASSOCIATED EXISTING PRINT NEW PRINT NEW INTENSITY MOTHERBOARD HEAD(S) HEAD POT. CONNS. SOCKET 1 x 7 nozzle head 1 x 7 nozzle head PL2/5, 6 2 x 7 nozzle 1 x 7 nozzle head PL2/1, 2 heads 3 x 7 nozzle 1 x 7 nozzle head PL2/3, 4 heads...
  • Page 114 INSTALLATION THIS PAGE INTENTIONALLY LEFT BLANK A-22 20509 Issue 7 Jan 2018...

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