Epson EU-T532 Technical Manual
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Epson EU-T532 Technical Manual

Epson EU-T532 Technical Manual

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Confidential

Technical manual

Thermal printer unit
EU-T532/T542
Issued Date
199
,
,
Issued by
English
4012872

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Summary of Contents for Epson EU-T532

  • Page 1: Technical Manual

    Confidential Technical manual Thermal printer unit EU-T532/T542 Issued Date Issued by English 4012872...
  • Page 2 On the earlier of (a) termination of your relationship with Seiko Epson, or (b) Seiko Epson’s request, you must stop using the confidential information. You must then return or destroy the information, as directed by Seiko Epson.
  • Page 3 To assure the safe operation of this product, carefully observe the specifications as well as the notes provided below. Seiko Epson Corporation will not bear any responsibility for any damage or injuries arising from use of this product that is not in accordance with the specifications and the notes provided below.

  • Page 4: About This Manual

    This chapter contains repair levels, repair procedure and troubleshooting. Chapter 6 Assembly and Disassembly This chapter contains assembly and disassembly for the units and the modules of the EU-T532/T542. Appendix Appendix contains the exploded, and the lubrication diagrams of the EU-T532/T542. Symbols Notes in this manual are identified by their level of importance, as defined below.

  • Page 5: Table Of Contents

    Confidential Contents About This Manual ........... . iii Symbols .
  • Page 6 Appendix EU-T532/T542 Exploded Diagram (Type 1 and 2) ......A-1 EU-T532/T542 Exploded Diagram (Type 3 and 4) ......A-2 Paper Roll Supply Module Exploded Diagram .
  • Page 7 Confidential Rev. A...

  • Page 8: Chapter 1 Features And Specifications

    • Traditional Chinese model: Supports BIG5 Level 1 and 2 Optional cut sheet retracting mechanism can be used for the EU-T532/T542 Type 2 and 4 Able to perform the remote monitoring using a status monitor Rev. A Features and Specifications 1-1...

  • Page 9: System Configuration And Module Names

    The whole systems is called the “EU-T532/T542,” and each unit is called a “module” which can be separated from the others. The EU-T532/T542 has four types, type 1 to 4, depending on the combination of the modules. (See “Module Combinations and Specifications” on page 1-4.) The...

  • Page 10: Specifications

    秘 秘 秘 秘 /Confidential EU-T532/T542 Technical Manual Specifications The specifications of the EU-T532/T542 are shown below. Refer to specifications for the EU-T532 and the EU-T542 issued by Seiko Epson Corporation for details. Table 1.1 Specifications Specification Item Paper roll Outside diameter 254 mm {10"}...

  • Page 11: Module Combinations And Specifications

    Print quality is guaranteed. Operation is 5 10 guaranteed. Module Combinations and Specifications The EU-T532/T542 can be used as four different types by the module combinations. The module combinations, functions and specifications are as follows: Type 1 Type 3 Type 4 Item Type 2 ...

  • Page 12: Chapter 2 Operation Principles

    Chapter 2 Operation Principles Outline of Mechanism The EU-T532/T542 consists of four modules: the paper roll supply module, the printer module, the cut sheet presenter module, and the control circuit board module. Paper Roll Supply Module The paper roll supply module holds a large diameter paper roll and guides the paper to the printer module.

  • Page 13: Paper Holding Section

    Confidential Paper Holding Section The paper roll holding mechanism is a shaft support type. The paper roll holding section consists of the shaft, paper roll fixed to the frame, main assembly, the holder, paper roll A (for the inner diameter of the paper core: 25.4 mm {1 inch}) that fits the size of the paper roll core used, and paper roll hold unit that holds the sides of the paper roll.

  • Page 14: Printer Module

    Confidential EU-T532/T542 Technical Manual Printer Module The printer module has a printing mechanism with the paper feeding and a cutting mechanism to cut the paper. The printer consists of the following six mechanisms: the drive force transmission mechanism, the paper feed mechanism, the printing mechanism, the paper guide mechanism, the detector mechanism, and the autocutter mechanism.

  • Page 15: Paper Feed Mechanism

    Confidential This printer uses a 4-phase bi-polar stepping motor driven by 24 V voltage controlled 2-2 phase excitation. The maximum drive frequency of 2-2 phase excitation is 1200 pps. [pps: pulses per second] Paper Feed Mechanism This mechanism consists of the paper feed mechanism and the platen-open mechanism. Paper feed mechanism The paper feed mechanism consists of the platen (paper feed roller) and the thermal head.
  • Page 16 Confidential EU-T532/T542 Technical Manual Platen-open mechanism The platen-open mechanism is used for the following purposes: • Paper loading when using the printer with the curved path type. (Excluding when using semi-autoloading mode.) • Removing a paper jam when the paper jam has occurred •...

  • Page 17: Printing Mechanism

    Confidential Printing Mechanism This mechanism consists of the thermal head which has the head heating elements arranged in a series and has a driver IC for controlling voltage to the head heating elements, the platen which is also used for the paper feed mechanism as well as this mechanism (the thermal head is also used for both mechanisms), and the spring, press head.
  • Page 18 Confidential EU-T532/T542 Technical Manual Data input and printing The thermal head consists of the head heating elements, the head driver, which controls or drives the head heating elements, and the thermistor, which detects the temperature of the thermal head. The serial print data input from Data In (DI1) is synchronized to the CLOCK (CLK) input, and temporarily placed in the SHIFT REGISTER.

  • Page 19: Paper Guide Mechanism

    Confidential Paper Guide Mechanism This mechanism consists of the paper guide mechanism. The paper path consists of the paper guide, straight, front and the paper guide, straight, back. The paper path is shown below. paper platen paper guide, straight, front paper guide, straight, back Figure 2-9 Paper path Detector Mechanism...
  • Page 20 Confidential EU-T532/T542 Technical Manual The transparent photo sensor is in a high state (HI) when the paper is present, and in a low state (LOW) when the paper is not present because the lever, paper detector blocks light to the sensor. When the end of the thermal paper passes through the paper guide, the lever, paper detector operates as shown in Figure 2-11.
  • Page 21 Confidential Platen-open detector mechanism The platen-open detector mechanism has a microswitch which detects whether the platen is open (printing impossible because the thermal head is away from the platen) or closed (printing possible). The microswitch can be OFF only when the frame, platen is perfectly closed, and at all other times is ON.

  • Page 22: Autocutter Mechanism

    Confidential EU-T532/T542 Technical Manual Black marks are detected through changes in output level from the reflective photo sensor. The changes in reflectivity between the pre-printed black marks and blank areas of the thermal paper cause the amount of light returning to the sensor to vary; then the sensor output level is also varied as shown in Figure 2-15.
  • Page 23 Confidential Movable cutter blade mechanism This mechanism is mounted on the frame, base. The drive force transmission mechanism is on the cover, cutter, H side. The motor, cutter, H, which is a DC brush motor attached the gear, cutter motor. It supplies the power and is attached on the cover, cutter, H with screws. The gear, cutter worm, H is supported by the shaft, reduction A/C , and the gear, cutter drive, H is attached with push nuts to the shaft, cutter drive gear fixed on the cover, cutter, H.
  • Page 24 Confidential EU-T532/T542 Technical Manual Auto cutting operation The autocutter will operate when the frame platen unit is closed and a paper is loaded. (The frame platen unit can be closed when the movable cutter blade, full, H is in the standby position.
  • Page 25 Confidential Note: If the movable cutter blade, full, H can not be returned to the home position because of a foreign matter locking the blade when powered by the motor, rotate the knob on the gear, cutter worm, H with a tool such as a ball-point pen or tweezers to move the movable cutter blade, full, H to the home position.

  • Page 26: Cut Sheet Presenter Module

    Confidential EU-T532/T542 Technical Manual Cut Sheet Presenter Module The cut sheet presenter module has a mechanism to carry the paper printed and cut by the printer module to the paper exit. Also, it has an optional cut sheet retracting function to retract a cut sheet when the cut sheet is not removed.
  • Page 27 Confidential The tip of the paper sent from the printer module is in the standby state between the first roller, cut sheet presenter and the roller, cut sheet hold, and the paper is continuously fed from the printer module. The paper pushes up the paper guide, upper and temporarily forms a loop. cut sheet paper guide, upper autocutter...

  • Page 28: Paper Carrying Operation (Without Loop)

    Confidential EU-T532/T542 Technical Manual Paper Carrying Operation (Without Loop) The cut sheet can be carried without forming a loop. cut sheet roller, cut sheet hold roller, cut sheet presenter Figure 2-25 Cut Sheet Operation without Loop Note: During paper carrying operations without a loop, do not pull out the paper.

  • Page 29: Detector Mechanism

    Confidential retracted paper sensor 1 frame, paper route change cut sheet plate, paper route change guide paper path change sensor roller, retract Figure 2-26 Retract Function Detector Mechanism The detector mechanism consists of the cover, open sensor, the carried paper sensor, the cut sheet presence sensor, the paper path change sensor, and the retracted paper sensor 1.

  • Page 30: Control Circuit Module

    Confidential EU-T532/T542 Technical Manual Control Circuit Board Module The control circuit board module controls all functions of each module and has the interface connectors and the power supply terminals. Each function can be set by using the DIP switches and the memory switches.
  • Page 31 (*2): Effective only when the serial interface is selected. Table 2-5 Model Type Selection Model Switch No.1 Switch No.2 EU-T532 (79.5 mm {3.15"} paper-width model: 576 dots) EU-T542 (82.5 mm {3.25"} paper-width model: 640 dots) 2-20 Operation Principles Rev. A...

  • Page 32: Memory Switches

    Other settings except DIP switches 1 and 2 are set by the memory switches. (The settings are changed with a GS (E command, and also can be changed by using the MEMSW.exe included with an EPSON Advanced Windows Driver.) The settings of the memory switches are as follows:...
  • Page 33 Confidential Table 2-10 Memory Switch 7 ON (1) OFF (0) SW No. Function Default setting  Fixed to OFF OFF(0) Reserved Setting for the secondary paper OFF(0) (*1) Refer to Table 2-11 near-end position Operation after Complete ejection Clamp cutting OFF(0) (*2) Paper initializing Paper edge is...
  • Page 34 Confidential EU-T532/T542 Technical Manual Table 2-12 Memory Switch 8 ON (1) OFF (0) SW No. Function Default setting 1 to 2 Refer to 2-13 OFF(0) Print control mode Backward paper Enabled Disabled OFF(0) (*1) feeding Autocutter Not installed Installed OFF(0)
  • Page 35 Confidential 2-24 Operation Principles Rev. A...

  • Page 36: Chapter 3 Handling

    Transport Precautions When shipping the printer, use anti-static packing materials. Remove a paper roll when transporting the EU-T532/T542. Make sure to close the paper roll hold unit of the paper roll supply module, the platen unit of the printer module, and the main unit and the upper frame, cut sheet presenter unit of the cut sheet presenter module when transporting.

  • Page 37: Installation Precautions

    15 minutes for them to cool. Since the EU-T532/T542 contain permanent magnets (in the motor) as well as electromagnets, they should not be used in an environment with excessive dirt, dust or metallic dust.
  • Page 38 15 minutes for them to cool. Since the EU-T532/T542 contain permanent magnets as well as electromagnets in the motor and the solenoid part, they should not be used in an environment with excessive dirt, dust and metallic dust.

  • Page 39: Storage Precautions

    Do not store the printer in environments with excessive dust, high temperature, high humidity, or in direct sunlight. Before storing the EU-T532/T542 for an extended time, remove the paper and wipe off dirt and dust; then clean parts such as the platen and the thermal head of the printer module, rollers of the cut sheet presenter module with alcohol.

  • Page 40: Cut Sheet Presenter Module

    Confidential EU-T532/T542 Technical Manual Cut Sheet Presenter Module Opening/closing the cut sheet presenter module (See Figure 3-2.) 1. Remove the white screw on the opposite side of the mounting dowels. 2. Put your fingers on/around the seal, paper exit guides (green stickers) on the upper frame, cut sheet presenter unit and on the paper exit;...

  • Page 41: Loading/Removing Paper

    Figure 3-3 Paper loading display on sticker Note: Use only the paper specified in the EU-T532 and the EU-T542 specifications issued by Seiko Epson Corporation. Loading paper for the paper roll supply module Follow the steps below to load the paper for the paper roll supply module.
  • Page 42 Confidential EU-T532/T542 Technical Manual Loading paper for printer module Follow the steps below to load the paper for the printer module from the paper roll supply module. 1. Cut the edge of the paper as shown in Figure 3-4. Figure 3-4 Shape of paper edge 2.

  • Page 43: Removing Paper

    Confidential Removing Paper Follow the steps below to remove the paper roll. Removing paper using command While the printer is online, the paper can be removed using a FS ( z command. Using this command, the paper is fed in the reverse direction and detached from the platen; then you can pull the paper backward and remove it.

  • Page 44: Paper Ne Detector Setting

    Confidential EU-T532/T542 Technical Manual Paper NE Detector Setting This detector is mounted on the paper roll tension unit of the paper roll supply module. By adjusting the position of the detector, the detector can detect the amount remaining on the paper roll at the setting value.

  • Page 45: Self Test

    Confidential Self Test The EU-T532/542 have self test functions. Follow the steps below to perform the self tests. Performing the Self Test 1. Loosen two screws to remove the cover, circuit board B. paper feed switch (See also Figure 3-7.)

  • Page 46: Errors

    Confidential EU-T532/T542 Technical Manual Errors LED Display The control circuit board module has three LEDs: the POWER LED for power supply error, the PAPER OUT LED for paper-out error and the ERROR LED for various kind of errors. For recovery from errors, see “Troubleshooting”...

  • Page 47: Paper Out Led (Paper-End Error): Red

    Confidential PAPER OUT LED (Paper-End Error): Red When the PAPER OUT LED is not lit, the paper roll has enough paper on it. The LED indicates the following: Table 4-5 PAPER OUT LED Error Error type LED flashing pattern Cause •...
  • Page 48 Confidential EU-T532/T542 Technical Manual Possible recovery error Table 4-7 Possible Recover Error Error type LED flashing pattern Cause Platen open error Platen unit is open during printing. Approx. 320 ms Approx. 5.12 s Autocutter error Autocutter malfunction Approx. 320 ms Approx.
  • Page 49 Confidential 3-14 Handling Rev. A...

  • Page 50: Chapter 4 Maintenance

    Confidential EU-T532/T542 Technical Manual Chapter 4 Maintenance To keep the printer in peak working condition, extend its life for a long term and prevent operational failures, follow the maintenance procedures below. Cleaning CAUTION: • Never clean the thermal head with solvents other than the specified ones, since other solvents could damage the thermal head or cause the malfunction of parts.

  • Page 51: Removing Stains (Except For The Thermal Head)

    Confidential Removing Stains (Except for the Thermal Head) The areas where the paper is fed will be stained or collect dust after printing for a long time because of paper dust and heat sensitive materials contained in the paper. Especially, if paper feed rollers, the platen, or the paper detectors are not clean, a malfuncion of paper feeding or paper detection may occur.

  • Page 52: Inspection

    Confidential EU-T532/T542 Technical Manual Inspection The maintenance and inspection procedures for the printer fall into two categories. One is “Daily checks” for the printer user, and the other is “Periodic checks” for someone with more technical knowledge. Maintenance and inspection procedures should be carried out by properly qualified personnel.

  • Page 53: Lubrication

    The lubricants for the printer are chosen based on technical information analysis and tests on various lubricants by EPSON. The lubricants are available in 40 cc (gr.) plastic containers (the minimum supply unit). Both G-36 and G-15 are used on this printer.

  • Page 54: Lubricant List

    Confidential EU-T532/T542 Technical Manual Table 4-2 Lubrication Point Lubrication Module Number Lubrication point type Amount of lubricant Two contact points where the paper roll hold unit G-36 Appropriate quantity Paper roll turns supply module Contact point where the paper roll tension turns...
  • Page 55 Confidential 4-6 Maintenance Rev. A...

  • Page 56: Chapter 5 Repair

    Confidential EU-T532/T542 Technical Manual Chapter 5 Repair Repairs are divided into two levels (A and B) in consideration of the degree of difficulty of repair. The person who repairs the printer should perform the proper repair procedures, depending on the individual technical knowledge and skills.

  • Page 57: Troubleshooting

    Confidential Troubleshooting Use troubleshooting procedures in the table below when problems occur. Table 5-1 Troubleshooting Phenomenon Condition Cause Level Where/how to check Procedure Power connector is See if the power Connect the power Power (24 V) is performance disconnected. connector is connector again.
  • Page 58 Confidential EU-T532/T542 Technical Manual Table 5-1 Troubleshooting Phenomenon Condition Cause Level Where/how to check Procedure PAPER OUT LED Self test standby Self test is in the Check if the self test Press paper feeding is flashing. state standby state printing is completed.
  • Page 59 Confidential Table 5-1 Troubleshooting Phenomenon Condition Cause Level Where/how to check Procedure Printing Nothing is (1) The head FFC Check whether the Connect the head operation does printed. connection head FFC is connected FFC properly. not work. failure properly. (2)The head FFC See or check with an Replace the head signal line is...
  • Page 60 Confidential EU-T532/T542 Technical Manual Table 5-1 Troubleshooting Phenomenon Condition Cause Level Where/how to check Procedure •Check the printing Printing is faint. All printing color is Change the setting Printing density faint. density setting of the of the printing setting is set to light.
  • Page 61 Confidential Table 5-1 Troubleshooting Phenomenon Condition Cause Level Where/how to check Procedure •Load the paper Paper is not Paper is not fed (1)The paper roll Check if the paper is fed. smoothly. supply module pulled out smoothly. properly. •Replace the paper does not (The paper tension oscillate...
  • Page 62 Confidential EU-T532/T542 Technical Manual Table 5-1 Troubleshooting Phenomenon Condition Cause Level Where/how to check Procedure •Load the paper Paper feeding The character (1)The paper roll Check if the paper is pitch is spacing is not supply module pulled out smoothly.
  • Page 63 Confidential Table 5-1 Troubleshooting Phenomenon Condition Cause Level Where/how to check Procedure Platen unit can Platen unit does The cutter blade is Check if the cutter Turn the knob to not open/ not open. not in the home blade is in the home return the cutter close.

  • Page 64: Small Parts Abbreviation

    Confidential EU-T532/T542 Technical Manual Chapter 6 Assembly and Disassembly Small Parts Abbreviation All small parts are represented by the abbreviations listed below. Table 6-1 Small Parts Abbreviations Abbreviation Part name Retaining ring E-type C-ring Crescent ring C.B. (M2 × 2.5) Cross-recessed binding head screw, 2 ×...
  • Page 65 Part name Assembly procedure step Paper detector assembly Paper guide, straight, back Slide the paper detector assembly onto the paper guide, straight, back*. (for the EU-T532) *For the EU-T542, attach the Paper guide, straight, paper detector back, B. assembly paper guide, straight, back <Check>...
  • Page 66 Confidential EU-T532/T542 Technical Manual Pre-assembly B Frame, platen, straight unit Reassembly Part name Assembly procedure step Frame, platen Lock lever assembly Install the lock lever assembly on the frame, platen, and secure it with a C.B.B-tite (M2 × × × × 6) ×...
  • Page 67 Confidential Pre-assembly B Reassembly Part name Assembly procedure step Push plate, platen, B Install the push plate, platen, B to the frame, platen and secure it with a C.C.P-tite (M2.5 × × × × 6) × 1 screw. push plate, platen, B frame, platen C.C.P-tite (M2.5 ×...
  • Page 68 Confidential EU-T532/T542 Technical Manual Pre-assembly B Reassembly Part name Assembly procedure step Platen, straight assembly Bearing, platen After Installing the platen, straight assembly to the frame, platen, install the × 1 R.E. (2.5) bearing, platen from the outside of the frame, platen; then secure it with an R.E.
  • Page 69 Confidential Pre-assembly C Cutter motor assembly Reassembly Part name Assembly procedure step Microswitch Lead wire, paper cutter Solder the white lead wire of the lead wire, paper cutter to the microswitch. black microswitch white lead wire, paper cutter *No polarity Cutter motor sub-assembly Solder the red wire of the Lead wire, paper cutter to the red marked terminal side of the Cutter motor sub-assembly, and solder the black lead...
  • Page 70 Confidential EU-T532/T542 Technical Manual Pre-assembly D Cutter, cover sub-unit Reassembly Part name Assembly procedure step Cutter, cover sub-assembly Gear, cutter worm, H Lubricate with G-36 the bore of the gear, cutter worm, H and the point where the gear, cutter worm, H comes in contact with the cutter, cover sub-assembly;...
  • Page 71 Confidential Pre-assembly D Reassembly Part name Assembly procedure step Cutter, motor assembly Install the cutter, motor assembly to the cutter cover sub-assembly, and C.B.(M2.3 × × × × 3) × 1 secure it with the C.B.(M2.3 × × × × 3). Screw, switch Install the microswitch to the cutter cover sub-assembly, and secure it with the screw, switch.
  • Page 72 Confidential EU-T532/T542 Technical Manual Pre-assembly D Reassembly Part name Assembly procedure step <Check> Make sure not to apply excessive pressure to the microswitch actuator when installing the cutter drive gear sub-assembly. Make sure not to damage the cutter drive gear sub-assembly when securing it with the R.E.
  • Page 73 Confidential Pre-assembly E Cutter unit Reassembly Part name Assembly procedure step Cutter cover sub-unit Cutter frame assembly Pass the lead wire, paper cutter through the hole on the cutter frame C.B.S-tite (M3 × × × × 5) × 1 assembly and secure the cutter cover sub-unit and the cutter frame assembly with a screw.
  • Page 74 Confidential EU-T532/T542 Technical Manual Pre-assembly E Reassembly Part name Assembly procedure step Emergency cutter, full, B Install the emergency cutter, full to the cutter cover sub-unit with screws. C.B.(M2 × × × × 2.5) × 2 C.B.(M2 × 2.5) <Check>...
  • Page 75 Confidential Pre-assembly F Installation of Black mark detector sub-assembly (optional) Reassembly Part name Assembly procedure step Black mark (B.M.) sub- assembly Paper guide Install the B.M. detector sub-assembly in one of the two detector C.P-tite F screw (M2 × × × × 3) mounting holes on the paper guide, and secure it with a screw.
  • Page 76 Confidential EU-T532/T542 Technical Manual Main Assembly A Installation of the Motor, paper feed, receipt, B and the Platen detector Reassembly Part name Assembly procedure step Frame assembly Motor, paper feed, receipt, Align the motor, paper feed, receipt, B with the mounting position on the frame assembly and secure it with scerws.
  • Page 77 Confidential Main Assembly A Reassembly Part name Assembly procedure step <Check> Tightening torque: 98 to 147 mN•m After installing the platen detector assembly, arrange the lead wires. lead wires 6-14 Assembly and Disassembly Rev. A...
  • Page 78 Paper guide, straight, back After putting the paper guide, straight, front and the paper guide, straight, unit (for the EU-T532) back unit* together, install them to the mounting holes on the frame C.B. (2.5 × 4 × 4) ×...
  • Page 79 Confidential Main Assembly B Reassembly Part name Assembly procedure step <Check> Tightening torque: 588 to 637 mN•m {6 to 6.5 kg•cm} The dowels on the paper guide, straight, back unit fit securely into the holes on the frame assembly. Make sure that the lead wires of the paper detector assembly are not caught between the frame assembly and the paper guide, straight, back unit.
  • Page 80 Confidential EU-T532/T542 Technical Manual Main Assembly C Installation of the Frame, platen, straight unit Reassembly Part name Assembly procedure step Lubricate the dowel on the frame assembly with G-36. Lubricate the point where the frame assembly contacts with the lock lever assembly with G-15.
  • Page 81 Confidential Main Assembly C Reassembly Part name Assembly procedure step <Check> Hook the longer edge of the spring, lever, platen into the groove on the lever, platen. Make sure not to deform the spring, lever, platen. groove longer edge × 1 R.E.
  • Page 82 Confidential EU-T532/T542 Technical Manual Main Assembly D Installation of the Thermal print head assembly Reassembly Part name Assembly procedure step Thermal print head Install the thermal print head assembly in the grooves on the frame assembly assembly. thermal print head...
  • Page 83 Confidential Main Assembly E Installation of the Plate, pressure spring Reassembly Part name Assembly procedure step Plate, pressure spring Circuit board assembly Install the circuit board to the plate, pressure spring, and secure it with C.B.S-tite (M2.5 × × × × 4) ×...
  • Page 84 Confidential EU-T532/T542 Technical Manual Main Assembly E Reassembly Part name Assembly procedure step <Check> Make sure that the lead wires, such as those for the paper detector assembly are not caught on anything when installing the spring, press head. Make sure that the lead wires of the paper detector assembly and the paper detector assembly are passed under the plate, pressure spring.
  • Page 85 Confidential Main Assembly F Installation of the Fixing plate, the Gear, reduction and the Gear, idler Reassembly Part name Assembly procedure step Fixing plate Install the fixing plate to the frame assembly, and secure it with the screw C.B.S-tite (M3 × × × × 5) ×...
  • Page 86 Confidential EU-T532/T542 Technical Manual Main Assembly G Installation of the Cover, gear Reassembly Part name Assembly procedure step C.B.S-tite (M3 × × × × 5) × 1 Loosen a screw on the gear side. C.B.S-tite (M3 × 5) × 1...
  • Page 87 Confidential Main Assembly H Installation of the Cutter unit Reassembly Part name Assembly procedure step Cutter unit Install the cutter unit to the frame assembly and secure it with screws, C.B.S-tite (M3 × × × × 5) × 2 while the lead wire, paper cutter is passed through the hook on the frame assembly.
  • Page 88 Confidential EU-T532/T542 Technical Manual Assembly I Arranging the lead wires Reassembly Part name Assembly procedure step Insert the lead wire connectors to the connectors on the circuit board. connector for the platen detector assembly variable resistor connector for the motor, paper feed,...
  • Page 89 Confidential Adjustment for Printer Module Adjustment of the black mark detector Adjust the black mark (B.M.) detector using the following procedure. Adjustment Adjustment procedure Adjustment point step Connect the FFC terminal No.12 to an oscilloscope to display the output power voltage of the B.M.

  • Page 90: Disassembly

    Component Configurations Overview The EU-T532/T542 have two disassembly types for ASP (After Service Parts) replacement. The one is “Unit disassembly” for disassembling the EU-T532/T542 into modules, the other one is “Module Disassembly” for disassembling each module into small parts. The configurations...

  • Page 91: Module Disassembly

    Confidential Module Disassembly (p. 6-38 to 46) When performing the module disassembly, the modules are disassembled into the following parts. When you want to disassemble a corresponding item only, see the page and the step numbers in brackets after part names. Paper roll supply module Cover, circuit board B (p.
  • Page 92 Confidential EU-T532/T542 Technical Manual Note: For the parts marked with (*1) to (*6), new wire bands are required when assembly, since the following wire bands used for those parts will be cut during disassembly. See the disassembly steps for the position of the wire bands.

  • Page 93: Unit Disassembly

    Confidential Unit Disassembly Cover, circuit board A/B and Control circuit board module Disassembly step Disassembly part name Disassembly procedure × 1 Remove the C.B (M3 × × × × 4) to remove the cover, UIB from the cover, circuit Cover, UIB C.B (M3 ×...
  • Page 94 Confidential EU-T532/T542 Technical Manual Disassembly step Disassembly part name Disassembly procedure Remove four C.B.(3 × × × × 4)s; then remove the control circuit board module. Control circuit board × 1 module C.B.(3 × × × × 4) × 4 <Check>...
  • Page 95 Confidential Disassembly step Disassembly part name Disassembly procedure <Reassembly Point: for the cover, circuit board A/B and control circuit board module> 1. Hold two cables for the printer module and a cable for the cut sheet presenter module with the plate, cable hold; then secure it with two C.B. (3 ×...

  • Page 96: Paper Exit

    Confidential EU-T532/T542 Technical Manual Paper exit Disassembly step Disassembly part name Disassembly procedure × 1 Remove four C.B.(3 × × × × 6)s; then remove the paper exit. Paper exit C.B.(3 × × × × 6) × 4 <Reassembly Point>...

  • Page 97: Cut Sheet Presenter Module, Holding Plate, Printer, Plate, Lower Paper Guide, Plate, Paper Guide Holder, And Holder, Paper Roll

    Confidential Cut sheet presenter module, Holding plate, printer, Plate, lower paper guide, Plate, paper guide holder, and Holder, paper roll Disassembly step Disassembly part name Disassembly procedure C.B.(M3 × × × × 4) × 2 Remove two C.B.(M3 × × × × 4)s at the bottom of the cut sheet presenter module. ×...
  • Page 98 Confidential EU-T532/T542 Technical Manual Disassembly step Disassembly part name Disassembly procedure Remove two C.B.(M3 × × × × 4)s; then remove the plate, lower paper guide from Plate, lower paper × 1 guide the plate, paper guide holder. C.B.(M3 × × × × 4) ×...
  • Page 99 Confidential Disassembly step Disassembly part name Disassembly procedure Remove two C.B.(M3 × × × × 4)s securing the plate, paper guide holder and the Plate, paper guide × 1 paper roll supply module, and remove two C.B.(M3 × × × × 4)s securing the plate, holder C.B.(M3 ×...
  • Page 100 Confidential EU-T532/T542 Technical Manual Disassembly step Disassembly part name Disassembly procedure × 1 C-ring 46 Remove the C-ring 46 from the shaft, paper roll. × 1 Holder, paper roll Remove the holder, paper roll from the shaft, paper roll. shaft, paper roll Rev.

  • Page 101: Module Disassembly

    Confidential Module Disassembly Paper roll supply module Disassembly Disassembly part step name Disassembly procedure C.B.(M3 × × × × 6) × 3 Remove three C.B.(M3 × × × × 6)s to remove the paper roll hold unit. Paper roll hold unit ×...
  • Page 102 Confidential EU-T532/T542 Technical Manual Disassembly Disassembly part step name Disassembly procedure × 1 Hexagonal nut Remove the hexagonal nut. Wire band (SKB-85) × 1 Cut the wire band securing the paper NE harness assembly of the paper roll tension unit to the frame, main.
  • Page 103 Confidential Disassembly Disassembly part step name Disassembly procedure Insert a hexagonal screwdriver from the hole on the paper roll tension unit with the paper roll tension unit fixed with your hand. Loosen the hexagon socket set screw with the hexagonal screwdriver and draw it to the paper roll tension unit side;...
  • Page 104 Confidential EU-T532/T542 Technical Manual Disassembly step Disassembly part name Disassembly procedure × 1 C-ring 46 Remove the C-ring 46. Pull out the paper roll tension unit about 2 to 3 cm from the frame, main. <Check> Do not pull the paper roll tension unit too far, since that cause damage to the cord of the paper NE harness assembly.
  • Page 105 Confidential Disassembly step Disassembly part name Disassembly procedure × 1 Paper roll tension unit Remove the paper roll tension unit from the shaft, paper roll. <Reassembly Point> 1. Make sure not to bend the plate spring, earth conductions B when attaching the paper roll tension unit to the shaft, paper roll.

  • Page 106: Cut Sheet Presenter Module

    Confidential EU-T532/T542 Technical Manual Cut sheet presenter module Disassembly step Disassembly part name Disassembly procedure Spring, cut sheet Remove the spring, cut sheet from the recover feeding A assembly and the × 1 presenter lower frame unit. × 1 R.E(5) Remove one of the R.E (5)s on the shaft, cut sheet presenter securing the...
  • Page 107 Confidential Disassembly step Disassembly part name Disassembly procedure Disconnect all connectors from the presenter module circuit board assembly. Wire band (SKB-1.5M)× 1 Cut the wire band securing the cable, presenter module to the lower frame unit. Cable, presenter After disconnecting the cable, presenter module from the presenter module ×...
  • Page 108 Confidential EU-T532/T542 Technical Manual Disassembly step Disassembly part name Disassembly procedure Wire band (SKB-85) × 2 Cut two wire bands below binding the lead wires. C.B.(3 × × × × 4) × 2 Remove two C.B.(3 × × × × 4)s to remove the presenter module circuit board Presenter module assembly from the lower frame unit.
  • Page 109 Confidential Disassembly step Disassembly part name Disassembly procedure Upper frame presenter Remove the upper frame, cut sheet presenter unit from the lower frame unit. × 1 unit <Check> With the lead wire for the cover open sensor out from the inside of the lower frame unit, remove the upper frame, cut sheet presenter unit.

  • Page 110: Appendix

    Confidential EU-T532/T542 Technical Manual Appendix EU-T532/T542 Exploded Diagram (Type 1 and 2) C.B. (3 × 4) C.B. (3 × 4) cover, circuit board A cover, circuit board B C-ring 46 cover, UIB hexagonal nut roll paper supply module dust cap C.B.

  • Page 111: Eu-T532/T542 Exploded Diagram (Type 3 And 4

    Confidential EU-T532/T542 Technical Manual EU-T532/T542 Exploded Diagram (Type 3 and 4) C.B. (3 × 4) plate, lower paper guide printer module plate, paper guide holder seal, paper exit * The mounting place for the controle circuit module guide will differ depending on users.

  • Page 112: Paper Roll Supply Module Exploded Diagram

    Confidential EU-T532/T542 Technical Manual Paper Roll Supply Module Exploded Diagram paper roll hold unit hexagonal nut C.B.(M3 × 6) plate, paper NE detector frame, main paper NE harness assembly C.P (P2) photo interrupter hexagon socket set screw C-ring 46 paper roll tension unit...

  • Page 113: Printer Module Exploded Diagram

    C.B.S-tite (M3 × 5) push plate, platen, B lever, platen gear, reduction A/C cutter cover sub-assembly (*1) For the EU-T532 (paper width 79.5 mm), plate, A/C lead wire, paper cutter use the paper guide, straight, front, B. spring, lever, platen (*2) For the EU-T542 (paper width 82.5 mm),...

  • Page 114: Cut Sheet Presenter Module Exploded Diagram

    Confidential EU-T532/T542 Technical Manual Cut Sheet Presenter Module Exploded Diagram upper frame, cut sheet presenter unit recover feeding A assembly lower frame unit fulcrum shaft, cut sheet presenter R.E (4) R.E (4) spring, cut sheet presenter shaft, cut sheet presenter R.E (5)
  • Page 115 Confidential EU-T532/T542 Technical Manual Roll Paper Supply Module Lubrication Diagram 13. G-36 13. G-36 Lubricate the point where the paper roll tension unit turns. 14. G-36 Rev. A Appendix -6...

  • Page 116: Printer Module Lubrication Diagram

    Confidential EU-T532/T542 Technical Manual Printer Module Lubrication Diagram 3.G-36 (*)Lubricate the points where contact with the cover, cutter after assembly. 5.G-36(*) 7.G-36 2.G-36 5.G-36(*) 4.G-36 1.G-15 6.G-36 10.G-15 8.G-15 10.G-15 8.G-15 9.G-15 9.G-15 12.G-15 11.G-36 Rev. A Appendix -7...

  • Page 117: Cut Sheet Presenter Module Lubrication Diagram

    Confidential EU-T532/T542 Technical Manual Cut Sheet Presenter Module Lubrication Diagram 15. G-36 16. G-36 15. G-36 16. G-36 Rev. A Appendix -8...
  • Page 118 SEIKO EPSON CORPORATION Printed in Japan...

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