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Rev. A

Operation Principles 2-1

EU-T532/T542 Technical Manual

Confidential

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. This module consists of the paper holding part, the paper load-absorbing
mechanism, and the paper nearend detector. The appearance of this module is shown below.

Figure 2-1 Paper roll supply module appearance

frame, main

paper nearend detector

screw, paper nearend detector

holder, paper roll
(Inside: shaft, paper roll)

holding plate, paper roll

paper roll hold unit

plate, fixed

frame, paper roll tension
(Inside: spring, paper roll tension)

shaft, paper roll tension roller

roller, paper roll tension

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Summary of Contents for EU-T532

Page 1: ...Confidential Technical manual Thermal printer unit EU T532 T542 English 4012872 Issued Date 199 Issued by ...

Page 2: ... otherwise without the prior written permission of Seiko Epson Your obligations under this Agreement are in addition to any other legal obligations Seiko Epson does not waive any right under this Agreement by failing to exercise it The laws of Japan apply to this Agreement Cautions Should any discrepancy exist between the contents of this document and the provisions of the Master Contract or Speci...

Page 3: ... maximum time power can be applied and the maximum voltage that can be applied to electronic components such as the head motor and magnets must be observed If the maximum time power can be applied or the maximum voltage that can be applied is exceeded the components mentioned above could overheat and start a fire or begin to smoke Always include protective circuitry governing the length of time po...

Page 4: ...eatures general specifications for the EU T532 T542 Chapter 2 Operation Principle This chapter contains the outline and principles of mechanisms Chapter 3 Handling This chapter contains precautions on handling paper loading unloading paper and removing jammed paper Chapter 4 Maintenance This chapter contains cleaning inspection lubrication and tools Chapter 5 Repair This chapter contains repair le...

Page 5: ...ocutter Mechanism 2 11 Cut Sheet Presenter Module 2 15 Paper Carrying Operation With Loop 2 15 Paper Carrying Operation Without Loop 2 17 Retract Function 2 17 Detector Mechanism 2 18 Control Circuit Module 2 19 DIP Switches 2 19 Memory Switches 2 21 Chapter 3 Handling Precautions 3 1 Transport Precautions 3 1 Carrying Precautions 3 1 Installation Precautions 3 2 Handling Precautions 3 2 Storage P...

Page 6: ...g 5 2 Chapter 6 Assembly Disassembly Small Parts Abbreviation 6 1 Assembly 6 1 Disassembly 6 27 Component Configurations Overview 6 27 Unit Disassembly 6 27 Module Disassembly 6 28 Unit Disassembly 6 30 Cover circuit board A B and Control circuit board module 6 30 Paper Exit 6 33 Cut sheet presenter module Holding plate printer Plate lower paper guide Plate paper guide holder and Holder paper roll...

Page 7: ...vi Rev A Confidential ...

Page 8: ... issuing 150 mm s 5 9 s maximum High reliability 600 000 receipt issue Length of receipt 228 4 mm 9 maximum Available for large paper roll core dimensions 254 mm 10 diameter maximum Supports ESC POS equivalent commands Able to print bar codes fence and ladder and graphics Options available for all models Japanese Kanji model Supports JIS Level 1 and 2 Simple Chinese model Supports GB50007 85 Tradi...

Page 9: ...f the modules See Module Combinations and Specifications on page 1 4 The configurations of the modules are as follows Figure 1 1 EU T532 T542 appearance Type 1 and 2 Figure 1 2 EU T532 T542 appearance Type 3 and 4 paper roll supply module control circuit board module inside printer module cut sheet presenter module holding plate printer printer module cut sheet presenter module control circuit boa...

Page 10: ...etracting the cut sheet 76 2 to 228 6 mm 3 to 9 When the cut sheet is ejected downward of the cut sheet presenter module Type 2 and 4 Print speed 150 mm s 5 9 s maximum Print width 72 mm 2 84 maximum recommended Reliability Receipt printing 600 000 times Cut sheet retracting 60 000 times Printer Mechanism 15 000 000 lines Thermal head 100 km 62 14 miles Paper roll Specified thermal paper Original ...

Page 11: ...vanced by a cut sheet presenter Yes Yes Yes Yes Cut sheet is retracted if the user forgets to remove the paper Yes Yes Module combination Paper roll supply module Yes Yes Printer module Yes Yes Yes Yes Control circuit board module Yes Yes Yes Yes Cut sheet presenter module Yes Yes with a retracting function Yes Yes with a retracting function Mass Approximately 5 5 kg 12 13 lb Approximately 5 5 kg ...

Page 12: ...rge diameter paper roll and guides the paper to the printer module This module consists of the paper holding part the paper load absorbing mechanism and the paper nearend detector The appearance of this module is shown below Figure 2 1 Paper roll supply module appearance frame main paper nearend detector screw paper nearend detector holder paper roll Inside shaft paper roll holding plate paper rol...

Page 13: ...e frame paper roll tension and the spring paper roll tension The roller paper roll tension receives the paper tension The shaft paper roll tension roller supports the roller paper roll tension so that the roller paper roll tension can rotate The frame paper roll tension fixes the previous two parts and is mounted on the shaft paper roll The spring paper roll tension is hooked on one end to the fra...

Page 14: ...Force Transmission Mechanism This mechanism consists of the motor paper feed receipt B fixed to pinion the gear reduction the gear idler and the gear platen The printer uses a stepping motor the rotation force of which is reduced in sequence by the gear reduction and the gear idler before being transmitted to the gear platen The arrows in the figure below indicate the direction of the gear rotatio...

Page 15: ...sm consists of the platen paper feed roller and the thermal head When the motor paper feed receipt B rotates counterclockwise as viewed from the shaft the gear train transmits the motion to the platen which rotates in direction A Figure 2 4 Paper feed mechanism Paper feed operation during printing The platen presses the thermal paper against the thermal head with a constant force When the platen r...

Page 16: ... lock lever is located on the gear train side of the frame platen and locks the frame platen unit to the frame base The spring lock lever inside the lock lever pushes the lock lever back The pushplate platen B is secured on top of the frame platen and covers the fixed blade When the frame platen unit is closed the platen is in the print ready position where the gear platen and the gear idler are e...

Page 17: ...he thermal head and the thermal paper are shown below Printing is performed in the following steps Figure 2 7 Cross section of thermal head and thermal paper 1 Drive pulses are sent to the designated dot electrodes in accordance with the print signal 2 Since the resistor layers are formed at the top of each electrode inside of the thermal head the resistor layers are heated up when the drive pulse...

Page 18: ... SHIFT REGISTER Using the LATCH LAT signal timing these data are then stored in the LATCH REGISTER Activated by the STROBE signals STR1 STR2 the stored print data is used to control the gate ON condition for the head heating element drive pulse This printer is equipped with two strobes and can print using a maximum of four divisions The drive pulse width is controlled by the control circuit board ...

Page 19: ... mark detector mechanism Paper end detector mechanism The paper end detector mechanism is located inside the paper guide mechanism to detect the end of the thermal paper and the paper insertion state in the semi autoloading mode This mechanism consists of the transparent photo sensor the lever paper detector which presses against the thermal paper and the spring paper detector which pulls the leve...

Page 20: ... photo sensor varies as shown in Figure 2 12 then the absence of paper is detected When the semi autoloading function is used the insertion of paper changes the status from no paper to paper Since the output level changes from LOW to HI the status changes to paper then the semi autoloading function is initiated Figure 2 11 Paper end detector mechanism Figure 2 12 Paper end detector operation plate...

Page 21: ...ctor circuit Head temperature detector mechanism The thermal head has a thermistor to detect the temperature of the thermal head Black mark detector mechanism The black mark mechanism is a device which can be attached inside the paper guide mechanism to determine the printing position when using pre printed thermal paper This mechanism uses the reflective photo sensor Figure 2 14 Black mark detect...

Page 22: ...chanism the movable cutter blade mechanism and the emergency cutter mechanism The basic principle of the autocutter mechanism is an application of the scissors principle where the paper is cut by two crossing blades A configuration which allows the two blades to separate has been adopted so that the fixed blade H separates from the movable cutter blade full H when the platen is open Fixed blade me...

Page 23: ...the gear cutter drive H enabling it to detect the position of the movable cutter blade full H The lead wires of the motor cutter H and the microswitch are bound together and connect to the circuit board The shaft movable cutter blade is on the frame cutter side The receiver movable cutter blade the spacer movable cutter blade the spring movable cutter blade and the washer movable cutter blade spri...

Page 24: ...s to rotate in the forward rotation The movable cutter blade full H intersects with the fixed cutter blade H and cuts the paper from the right to the left to the direction of the first column 3 After cutting the paper the movable cutter blade full H starts to return to the home position 4 As the movable cutter blade full H approaches the home position the microswitch is switched from ON close to O...

Page 25: ...owered 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 The window on the cover cutter H can be used to check if the movable cutter blade full H has returned to the home position Figure 2 20 Home position check window Movable cutter blade in the home position knob ...

Page 26: ...er rotates in the clockwise direction via the gears The roller cut sheet hold is pressed to the roller cut sheet presenter by a spring The first roller cut sheet presenter and the roller cut sheet hold and the second roller cut sheet presenter and the roller cut sheet hold are connected with the belt cut paper presenter transmission not shown and rotate in the same direction The paper sent from th...

Page 27: ...et presenter and is carried to the paper exit When the carried paper sensor detects the end of the cut sheet the motor paper feed receipt B will stop With the cut sheet between the second roller cut sheet presenter and the second roller cut sheet hold a series of operations is completed and the cut sheet is ejected from the paper exit A cut sheet presence sensor is provided near the paper exit to ...

Page 28: ...ed by a command signal for the retraction At first the paper route change performs the paper path change operation to retract the cut sheet When the solenoid linked with the frame paper route change is energized the frame paper route change and the plate route change guide move in direction A After the paper route change sensor detects the end of the paper route change operation the motor paper fe...

Page 29: ...enter unit is open or not Carried paper sensor This sensor detects the paper presence in the paper carrying route Cut sheet presence sensor This sensor detects whether or not a recipient has taken the cut sheet Paper path change sensor This sensor detects the retracted paper route change when the cut sheet is not taken Retracted paper sensor 1 This sensor detects the paper presence in the retracte...

Page 30: ...trol circuit board module DIP Switches The circuit board has two DIP switches DSW 1 2 Each setting is as follows DIP Switch 1 Effective only when the serial interface is selected Table 2 1 DSW 1 SW No Function ON OFF Default Setting 1 Black mark sensor Enabled Disabled OFF 2 Interface selection Refer to Table 2 2 3 4 Serial interface handshaking XON XOFF DTR DSR or CTS RTS OFF 5 Serial interface p...

Page 31: ...bps Switch No 7 Switch No 8 4800 ON ON 9600 OFF ON 19200 ON OFF 38400 OFF OFF Table 2 4 DSW 2 SW No Function ON OFF Default setting 1 Model type selection Refer to Table 2 5 ON 2 OFF 3 Print density selection Refer to Table 2 6 4 5 Operation mode selection Refer to Table 2 7 6 Factory use OFF 1 7 I F pin 6 reset signal 1 Enabled Disabled OFF 2 8 I F pin 6 reset signal 2 Enabled Disabled Table 2 5 ...

Page 32: ...ncluded with an EPSON Advanced Windows Driver The settings of the memory switches are as follows 1 Effective only in the serial interface model 2 Effective only in the parallel interface model Table 2 6 Print Density Selection Level Print Density Switch No 3 Switch No 4 1 Slightly light ON ON 2 Normal OFF OFF 3 Slightly dark ON OFF 4 Dark OFF ON Table 2 7 Operation Mode Selection Operation mode Sw...

Page 33: ...earend is detected When the primary and the secondary paper nearends are detected the status from the printer changes However printer controls such as the printing stop are not affected Table 2 10 Memory Switch 7 SW No Function ON 1 OFF 0 Default setting 1 Reserved Fixed to OFF OFF 0 2 Setting for the secondary paper near end position Refer to Table 2 11 OFF 0 1 3 4 Operation after cutting Complet...

Page 34: ...turned on the printer clears the receive buffer when the offline status shown above occurs Then the printer executes any real time command DLE ENQ DLE EOT if it is there and discards all other data When the receive buffer is cleared if this switch is turned on three bytes of data 37H 24H and 00H are transmitted Table 2 12 Memory Switch 8 SW No Function ON 1 OFF 0 Default setting 1 to 2 Print contr...

Page 35: ...2 24 Operation Principles Rev A Confidential ...

Page 36: ...ng Precautions Hold the frame main and the holding the plate printer of the paper roll supply module when carrying Note Do not hold parts other than above such as the holder paper roll or shaft paper roll or the roller paper roll tension otherwise the functions may be affected because of damage or deformation of parts When you put this unit on a place such as a desk be sure to put it on a flat pla...

Page 37: ...al head area and the motor surface can become hot right after or during printing never touch them with your bare hands allow about 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 Never print without paper installed or with the head away from the pl...

Page 38: ...n environment with excessive dirt dust and metallic dust Operate the cut sheet presenter module or the upper frame cut sheet presenter unit only when required Do not turn off the power during operations since that could cause a paper jam Control circuit module Serial interface is secured with inch type hexagonal lock screws for the default setting If you use millimeter type screws replace the inch...

Page 39: ... until the platen works properly then resume printing Opening Closing Units and Modules Note Do not apply excessive pressure to any operation part otherwise its function may be damaged because of deformation or damage of the part Apply pressure to each operation part only in the specified direction otherwise its function may be damaged because of deformation or damage of the part Paper Roll Supply...

Page 40: ...t up the bottom of the paper exit At this time make sure that the mounting dowels both on the right and left sides are securely engaged with the mounting parts on the module Opening closing the upper frame cut sheet presenter unit See Figure 3 2 1 Turn the lever clamp in the direction of arrow G to open the unit You can operate either lever on the right or the left 2 To close the unit turn the lev...

Page 41: ...eter of the paper core to the shaft paper roll then secure it with a C ring Note At the default setting the holder paper roll A for the inner diameter of the paper core is 25 4 mm 1 is attached to the paper roll supply module Since two holders the holder paper roll B if the inner diameter of the paper core is 50 8 mm 2 and the holder paper roll C if the inner diameter of the paper core is 76 2 mm ...

Page 42: ... module the paper is fed automatically in the semi autoloading mode 5 When the semi autoloading is finished the extra paper is automatically cut 6 Remove the extra paper from the paper exit Note Performing operations other than above can cause improper paper feeding and jamming Make sure that the paper is not wrinkled or torn To avoid paper jams do not fold the edge of the paper Paper curled in th...

Page 43: ...Removing Jammed Paper CAUTION Since the thermal head area and the paper feed motor surface of the printer module and the paper feed motor surface of the cut sheet presenter module can become hot right after printing never touch them with your bare hands allow about 15 minutes for them to cool Note Never pull the paper out with the platen unit of the printer module or the upper frame cut sheet pres...

Page 44: ...in the direction of arrow 3 Tighten the paper NE detector with the screw NE detector at the given fixing hole for the paper NE detector For further adjustment use the paper NE detector fixing groove The hole numbers for the paper NE detector fixing hole and the paper roll diameters detected by the paper NE detector are as follows Note Because the amount remaining on the paper roll will vary with t...

Page 45: ...e Self test printing please press FEED button is printed then the PAPER OUT LED starts to flash 5 Press the paper feed button again while the PAPER OUT LED is flashing then the printing for the test pattern printing is resumed Self Test End 1 After a number of lines are printed the message completed is printed at the end of the self test then the unit enters the normal operational mode with all se...

Page 46: ...various kind of errors For recovery from errors see Troubleshooting in Chapter 5 Figure 3 7 LED positions POWER LED Power Supply Error Green When the POWER LED is lit the power is supplied The LED indicates the following Table 4 4 POWER LED Error Error type LED flashing pattern Cause Power supply error Not lit The power supply connector is unplugged The fuse F1 is blown out POWER LED PAPER OUT LED...

Page 47: ...cooled down to 60 C or less the unit recovers automatically Table 4 5 PAPER OUT LED Error Error type LED flashing pattern Cause Paper end error Lit The amount of remaining on the paper roll is little or no paper is loaded Α paper jam occurs around the detector Detector failure has occurred The connector of the detector is unplugged Waiting for self test printing to be continued or macro execution ...

Page 48: ... of paper with black mark is fed Presenter error A paper jam has been detected in the cut sheet presenter module Table 4 8 Impossible recover error Error type LED flashing pattern Cause CPU execution error The CPU executes an incorrect address R W error in memory or G A After R W checking the printer does not work correctly High voltage error The power supply voltage is extremely high Low voltage ...

Page 49: ...3 14 Handling Rev A Confidential ...

Page 50: ...ating elements of the printer module will collect dust after printing for a long period of time because of heat sensitive materials contained in the paper that could affect printing quality In this case clean the thermal head using the steps below 1 Turn off the power 2 Open the cut sheet presenter module See Opening Closing Units and Modules on page 3 4 3 Open the platen unit using the lever plat...

Page 51: ...tion point and lubricate when necessary Note When opening the units and cleaning them be sure not to damage parts and paper detectors disconnect wires or unplug connectors Removing Foreign Matter When the Cutter Locks Follow the procedures below to remove foreign matter when the cutter of the printer module locks After rotating the motor in reverse so that the movable cutter blade full H returns t...

Page 52: ...t presenter unit the cover circuit board B and etc Close the units Paper chips or foreign matter inside the product No paper chips or foreign matter is inside the product Remove paper chips or foreign matter Paper state Specified paper is used Replace with the specified paper No discolored or torn paper is used Replace with a new paper roll Table 4 2 Periodic Checks Check item Standard Procedure D...

Page 53: ...ly is performed When lubricating parts during assembly of the printer clean parts before lubricating them Refer to the next section and Lubrication Diagram at the end of this manual for the lubricants and the lubrication points Lubrication Point The lubrication points are as follows Table 4 2 Lubrication Point Module Number Lubrication point Lubrication type Amount of lubricant Printer module 1 Tw...

Page 54: ... 16 Two points where the upper frame cut sheet presenter unit turns G 36 Appropriate quantity Table 4 3 Lubricant List Type Name Quantity Commercial availability Grease G 15 40 gr Epson exclusive product Grease G 36 40 gr Table 4 4 Tool List Tool name Commercial availability Brush 1 Yes Cleaning brush Yes Crosshead screwdriver 0 1 and 2 Yes ET holder No 1 5 2 2 5 3 3 5 and 4 Yes Tweezers Yes Diago...

Page 55: ...4 6 Maintenance Rev A Confidential ...

Page 56: ...el B Requires a certain degree of knowledge of the printer s operating principles and structure as well as skills and experience using special tools for disassembly and assembly of the printer Phenomenon Find the type of problem in this column Condition Check the condition of malfunction by referring to this column Cause Locate the cause of the problem by referring to this column Also the repair l...

Page 57: ...ut Paper detector failure 1 Paper chips or foreign matter is jammed around the paper detector A Check whether paper chips or foreign matter is jammed around the paper detector Remove the paper chips or foreign matter if there is any 2 Paper chips or foreign matter is jammed around the paper NE detector A Check whether paper chips or foreign matter is jammed around the paper NE detector Remove the ...

Page 58: ... or foreign matter is inside the autocutter and has locked it B Check whether paper chips or foreign matter is jammed inside the autocutter After turning off the power remove paper chips or foreign matter then turn on the power 2 The internal function of the autocutter is damaged B Check the power supply voltage Replace the autocutter if the power supply voltage is normal Black mark detection erro...

Page 59: ...e missing continuously 1 Foreign matter is attached to the head heating elements A See if anything is wrong with the head heating elements Clean the head heating elements if foreign matter attached 2 The head heating elements are damaged A Replace the thermal 3 Head failure Dr IC etc B Check with an oscillo scope if the input pulse is within the specified range If the input pulse is normal replace...

Page 60: ...A See or check with a magnifier the platen surface Replace the platen if the platen surface is damaged or deformed Abnormal or incorrect printing Abnormal or incorrect printing 1 Thermal head input pulse failure B Check with an oscillo scope if the input pulse is within the specified range If the input pulse is abnormal replace the control circuit board 2 Thermal head failure Dr IC etc B If input ...

Page 61: ...ilure B Check the power supply voltage input signal and operation of each paper feed motor Replace the control circuit board module if there is any problem with the power supply voltage input signal Replace the motor if there is any problem with the motor operation 2 The paper feed connector is disconnected A Check if the each paper feed motor is connected properly Connect the connector properly 3...

Page 62: ...roblem with the power supply voltage input signal Replace the motor if there is any problem with the motor operation 4 Paper feed slip due to the platen wear and paper powder B Check the friction force of the platen surface Clean the platen if paper powder accumulates on it Replace the platen if it is worn out 5 Operation failure of the paper roll tension unit B Check if the unit moves smoothly If...

Page 63: ...n matter inside the printer A Check whether foreign matter is inside the printer Remove foreign matter if there is any Upper frame cut sheet presenter unit can not open close Upper frame cut sheet presenter unit can not open close Foreign matter inside the cut sheet presenter module A Check whether foreign matter is inside the cut sheet presenter module Remove foreign matter if there is any Table ...

Page 64: ... unless performed during reassembly Refer to Lubrication in Chapter 4 for lubrication details on the printer module and other modules Also see the lubrication diagrams at the end of this manual for the places to lubricate Table 6 1 Small Parts Abbreviations Abbreviation Part name R E Retaining ring E type C ring Crescent ring C B M2 2 5 Cross recessed binding head screw 2 2 5 F Zn C B M2 3 3 Cross...

Page 65: ...aper detector assembly 2 Paper guide straight back for the EU T532 For the EU T542 attach the Paper guide straight back B Slide the paper detector assembly onto the paper guide straight back Check Make sure that the paper detector assembly is installed securely as shown below paper detector assembly paper guide straight back Install securely ...

Page 66: ...de H Install the cover fixed blade and the fixed blade H on the frame platen then secure them with shouldecs 5 Spring fixed blade Shouldec 2 6 2 2 At this time install the spring fixed blade on one of the shouldecs as shown below Check Tightening torque 147 to 196 mN m 1 5 to 2 0 kg cm Make sure to install the fixed blade H right side up Make sure that the dowels on the frame platen fit securely i...

Page 67: ...and secure it with a screw Check Tightening torque 392 to 490 mN m 4 to 5 kg cm 7 Spring lock lever Hook the ends of the spring lock lever onto the lock lever assembly and C B B tite M2 6 from the inside of the frame platen Check Make sure that the spring lock lever is hooked securely push plate platen B frame platen C C P tite M2 5 6 C B B tite M2 6 spring lock lever lock lever assembly frame pla...

Page 68: ...assembly 9 Bearing platen R E 2 5 1 After Installing the platen straight assembly to the frame platen install the bearing platen from the outside of the frame platen then secure it with an R E Lubricate with G 15 two points where the screw on the lock lever assembly is secured platen straight assembly bearing platen R E 2 5 bearing platen frame platen G 15 ...

Page 69: ...re paper cutter to the microswitch 3 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 wire to the other terminal Check Make sure to arrange the lead wires properly microswitch white lead wire paper cutter black red No polarity red mark red black lead wire paper cutter cutter motor ...

Page 70: ...ter worm H and the point where the gear cutter worm H comes in contact with the cutter cover sub assembly then install it on the cutter cover sub assembly 3 Shaft reduction A C Insert the shaft reduction A C to the bores of the gear reduction A C and the gear cutter worm H Check Make sure that the shaft reduction A C is oriented properly before insertion gear cutter worm H G 36 cutter cover sub as...

Page 71: ...crew switch Make sure to install the cutter motor with the labeled side down Make sure that the cutter motor is installed securely Make sure that the dowel on the microswitch fits securely in the mounting hole on the cutter cover sub assembly 5 Cutter drive gear sub assembly Plain washer 3 0 5 7 1 R E 2 5 1 After lubricating the shaft on the cutter cover sub assembly with G 36 install the cutter d...

Page 72: ... step Part name Assembly procedure 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 Lubricate the specified areas with G 36 G 36 G 36 G 36 ...

Page 73: ...y together insert the shaft movable cutter blade drive into the oval hole on the movable cutter blade Check Tightening torque 686 to 882 mN m 7 to 9 kg cm Make sure that the shaft movable cutter blade drive fits securely into the oval hole on the movable cutter blade Make sure that the edges of the cutter cover sub unit fit into the hooks on the cutter frame assembly C B S tite M3 5 oval hole lead...

Page 74: ...e 3 Emergency cutter full B C B M2 2 5 2 Install the emergency cutter full to the cutter cover sub unit with screws Check Tightening torque 147 to 196 mN m 1 5 to 2 kg cm 4 Plate A C Loosen the C B S tite M3 5 to attach the plate A C to the cutter cover sub unit tighten it again C B M2 2 5 plate A C C B S tite M3 5 cutter cover sub unit ...

Page 75: ...2 3 1 Install the B M detector sub assembly in one of the two detector mounting holes on the paper guide and secure it with a screw Both the straight path and the curved path types can be installed this way Check Tightening torque 118 to 216 mN m 1 2 to 2 2 kg cm Make sure that the detector fits securely into the detector mounting hole on the paper guide C P tite F screw M2 3 B M detector sub asse...

Page 76: ... the motor paper feed receipt B with the mounting position on the frame assembly and secure it with scerws Check Tightening torque 686 to 882 mN m 7 to 9 kg cm Make sure that the motor paper feed receipt B is oriented properly 3 Platen detector assembly C P 1 6 5 1 Align the platen detector assembly to the mounting position on the frame assembly and secure it with a screw motor paper feed receipt ...

Page 77: ... and Disassembly Rev A Confidential Main Assembly A Reassembly step Part name Assembly procedure Check Tightening torque 98 to 147 mN m After installing the platen detector assembly arrange the lead wires lead wires ...

Page 78: ... straight 2 Insert the pin guide straight into the holes on the paper guide straight front 3 Paper guide straight back unit for the EU T532 C B 2 5 4 4 4 4 2 For theEU T542 use the Paper guide straight back B unit After putting the paper guide straight front and the paper guide straight back unit together install them to the mounting holes on the frame assembly and secure them with screws paper gu...

Page 79: ...he 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 Make sure that the wires of the paper detector assembly are passed under the hook on the paper guide straight back unit hook paper guide straight back unit ...

Page 80: ...Install the frame platen straight unit to the frame assembly 4 Shaft frame platen R E 1 5 1 Align the holes on the frame assembly and the frame platen straight unit and insert the shaft frame platen into these holes then secure it with an R E 5 6 Lever platen Spring lever platen Install the spring lever platen on the lever platen as shown below frame platen straight unit dowel frame assembly G 36 ...

Page 81: ...en 7 R E 2 1 Install the lever platen to the shaft frame platen and secure it with an R E Check Make sure that the shaft lock lever is placed properly into the specified position on the lever platen 8 Remove the longer edge of the spring lever platen and hook it on the shaft lock lever groove longer edge shaft frame platen lever platen R E 2 shaft lock lever shaft lock lever lever platen longer ed...

Page 82: ...mbly in the grooves on the frame assembly Check When handling the thermal print head assembly use proper body grounding procedures to avoid static electricity Use a conductive mat and wrist band during assembly Do not touch the connector terminals and the surface of the thermal print head assembly If foreign matter attaches to them wipe off the foreign matter lightly using a cotton swab dampened w...

Page 83: ... 2 Install the spring press head to the plate pressure spring Check Make sure that the spring press head is pushed securely into the plate pressure spring 4 Hook the edge of the spring press head to the groove of the thermal print head assembly while pushing the plate pressure spring in the arrow direction then hook it to the groove of the frame assembly plate pressure spring C B S tite M2 5 4 cir...

Page 84: ...ng 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 Make sure that the edge of the spring press head fits securely into the groove on the thermal print head assembly Make sure that the plate pressure spring is hooked securely into the hole on the frame assembly lead wires plate pressure spring spring ...

Page 85: ...xing plate to the bearing platen Check Tightening torque 686 to 882 mN m 7 to 9 kg cm Make sure that the edge of the fixing plate is pushed securely to the bearing platen 2 Gear reduction 3 Gear idler R E 2 5 2 Install the gear reduction and the gear idler to the shafts on the frame assembly and secure them with R E s Check Make sure not to deform the shaft on the frame assembly when securing with...

Page 86: ... procedure 1 C B S tite M3 5 1 Loosen a screw on the gear side 2 Cover gear 1 Hook the cover gear to the edge of the shaft frame platen the frame and the C B S tite M3 5 then attach it to the side of the printer 3 Tighten the C B S tite M3 5 again Check Tightening torque 686 to 882 mN m 7 to 9 kg cm C B S tite M3 5 C B S tite M3 5 shaft frame platen cover gear ...

Page 87: ...ssembly Check Tightening torque 686 to 882 mN m 7 to 9 kg cm Make sure that the lead wire paper cutter is passed through the hook on the frame assembly properly as shown above Make sure that the lead wire paper cutter is not caught between any places when securing the cutter unit Install the cutter unit in the platen up state Lubricate the point where the fixed blade H of the cutter unit contacts ...

Page 88: ...d through the hook on the frame assembly and arranged inside of the printer Check Make sure that any of the lead wires are not caught by the projections the colored part Make sure not to damage the coats of the lead wires when arranging the lead wires 3 Sheet board 1 Paste the double sided tape on the sheet board to the circuit board variable resistor connector for the platen detector assembly con...

Page 89: ... into the paper entrance Kodak Gray Card A commercially available card for adjusting exposure Make sure that the gray side of the card is inserted along the paper guide which the B M detector sub assembly is installed 4 Adjust the output power voltage of the B M detector at 1 74 V using the variable resistor on the circuit board assembly Turn the slot on the variable resistor to the right and the ...

Page 90: ...numbers 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 when performing those disassemblies are as follows Unit Disassembly p 6 30 to 37 When performing...

Page 91: ...agonal nut p 6 38 to p 6 39 step 3 Paper roll tension unit 1 p 6 38 step 2 to p 6 42 step 12 Screw paper NE detector p 6 38 step 2 to p 6 42 step 12 to 13 Paper NE harness assembly 2 p 6 38 step 2 to p 6 42 step 12to 15 Photo interrupter 3 p 6 38 step 2 to p 6 42 step 12 to 16 C B M3 6 p 6 38 step 1 Wire band Cut Sheet Presenter Module Spring cut sheet presenter p 6 43 step 1 Recover feeding A ass...

Page 92: ...r the position of the wire bands 1 Wire band SKB 85 1 2 Wire band SKB 85 1 3 Wire band SKB 85 1 4 Wire band SK 1 5M 1 5 Wire band SKB 85 2 6 Wire band SKB 85 2 and wire band SKB 1 5M 1 The wire bands given below are the identical ones 2 and 3 wire bands SKB 85 4 and 6 wire bands SKB 1 5M 5 and 6 wire bands SKB 85 When you replace the cut sheet presenter module the paper exit and the upper frame cu...

Page 93: ...ector on the circuit board module 4 Hexagonal lock screw millimeter screw 2 Remove two hexagonal screws fastening the serial connector on the control circuit board and the cover circuit board A 5 Plapoint 2 Loosen two plapoints 6 Cover circuit board B 1 Remove the cover circuit board while sliding it to the right 7 Disconnect the paper NE harness assembly the connector for the cut sheet presenter ...

Page 94: ...Do not deform the parallel connector on the control circuit board module by getting caught it on the cover 9 Cover circuit board A 1 C B 3 4 6 Remove six C B 3 4 s then remove the cover circuit board A from the paper roll supply module 10 Plate cable hold 1 C B 3 3 2 Remove two C B 3 3 s then remove the plate cable hold Disassembly step Disassembly part name Disassembly procedure 5 10 9 9 control ...

Page 95: ...should not be run together 2 Attach the cover circuit board A to the paper roll supply module and secure it with six C B 3 4 s 3 Attach the control circuit module and secure it with C B 3 4 s in four places temporarily 4 Connect the cables and the connectors to the control circuit board module Reassembly Check Make sure to note the numbers of the pins and the color of the connectors and before con...

Page 96: ...rt name Disassembly procedure 1 Paper exit 1 C B 3 6 4 Remove four C B 3 6 s then remove the paper exit Reassembly Point Tightening torque for reassembly 539 to 637 mN m 5 5 to 6 5 kg cm Do not forget to paste the seal paper exit guide on the paper exit paper exit seal paper exit guide upper frame cut sheet presenter unit ...

Page 97: ...rs on around the seal paper exit guide and pull the cut sheet presenter module fully to the near side to turn downward 4 Cut sheet presenter module 1 C B M3 4 2 Insert a screwdriver between the shaft cut sheet presenter frame and the recover feeding A assembly and remove two upper C B M3 4 s to remove the cut sheet presenter module Reassembly Point Do not forget to paste seal paper exit guide on t...

Page 98: ...inter module 1 C B M3 4 4 Remove four C B M3 4 s and remove the printer module from the holding plate printer Reassembly Point When you remove the printer module only attach the plate lower paper guide again See Reassembly Point of the plate lower paper guide for attaching Pass the narrower FFC cable through the lower rectangle hole on the holding plate printer Fold the other cable the wider one s...

Page 99: ...6 5 kg cm 8 Holding plate printer 1 C B M3 4 4 C B M3 6 2 Remove four C B M3 4 s and two C B M3 6 s to remove the holding plate printer from the paper roll supply module Reassembly Point 1 Attach the holding plate printer to the paper roll supply module and secure a screw temporarily step below 2 Secure each screw to the respective mounting positions in sequence of reassembly steps to below Tighte...

Page 100: ...Technical Manual Confidential 9 C ring 46 1 Remove the C ring 46 from the shaft paper roll 10 Holder paper roll 1 Remove the holder paper roll from the shaft paper roll Disassembly step Disassembly part name Disassembly procedure 8 9 shaft paper roll ...

Page 101: ...oll hold unit 1 Remove three C B M3 6 s to remove the paper roll hold unit Reassembly Point Secure the paper roll hold unit while it is set onto the shaft paper roll At this time check if the paper roll hold unit can be opened closed smoothly 2 Spacer paper roll holder 1 Remove the spacer paper roll holder from the shaft paper roll 1 2 shaft paper roll paper roll hold unit ...

Page 102: ...he paper roll tension unit to the frame main 5 Align the hole on the paper roll tension unit with the hexagon socket set screw then push the paper roll tension unit against the frame main with your hand so that the unit does not move Disassembly step Disassembly part name Disassembly procedure hole paper roll tension unit push the unit against the frame main with your hand to secure it 3 4 5 frame...

Page 103: ...tension unit until the hexagon socket set screw is drawn from the edge of the frame main Be sure not to remove two springs of the paper roll tension unit from the hexagon socket set screw Reassembly Point 1 Secure the hexagon socket set screw at the position where it extends 6 0 5 mm 0 236 0 02 from the frame main with the hexagonal nut 2 Be sure the hexagon socket set screw is in the correct posi...

Page 104: ...ring 46 10 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 11 Pull out the paper NE harness assembly of the paper roll tension unit from the rectangle hole on the frame main 9 11 10 rectangle hole paper roll tension unit ...

Page 105: ...he paper NE detector assembly at the same position as the position before disassembly 14 Paper NE harness assembly 1 Disconnect the paper NE harness assembly from the photo interrupter 15 Wire band SKB 85 1 Cut the wire band securing the paper NE harness assembly to the plate paper NE detector Reassembly Point When binding the paper NE harness assembly with a wire band be sure that the wire band i...

Page 106: ... assembly and the lower frame unit 2 R E 5 1 Remove one of the R E 5 s on the shaft cut sheet presenter securing the recover feeding A assembly and the lower frame unit 3 Shaft cut sheet presenter 1 R E 5 1 Pull out the shaft cut sheet presenter from the lower frame unit and the recover feeding A assembly 4 Recover feeding A assembly 1 Remove the recover feeding A assembly from the lower frame uni...

Page 107: ...ngle hole on the lower frame unit Reassembly Point 1 Fold the cable at right angle at the position about 10 mm away from the connector for the presenter module circuit board assembly 2 Fold the cable at 45 at the position folded in step 1 Fold the cable so that it faces the rectangle hole on the lower frame unit 3 Pass the cable throught the rectangle hole on the lower frame unit Disassembly step ...

Page 108: ...er frame cut sheet presenter unit and the lower frame unit 11 Move the spring cut sheet presenter frame to the groove of the frame and unhook the one side of the spring 12 Spring cut sheet presenter module 1 Fulcrum shaft cut sheet presenter 1 R E 4 1 Pull out the fulcrum shaft cut sheet presenter from the frame and remove the spring cut sheet presenter frame from between the upper frame cut sheet...

Page 109: ...not forget to paste seal paper exit guide on the upper frame cut sheet presenter unit 14 Cover presenter route gear 1 C B M3 4 1 C B S tite M3 5 1 Remove the C B M3 4 and the C B S tite M3 5 to remove the cover presenter route gear from the lower frame unit 15 Gear idler 1 Lower frame unit 1 Pull out the gear idler from the lower frame unit Disassembly step Disassembly part name Disassembly proced...

Page 110: ...rd module cover circuit board A cover circuit board B printer module holding plate printer paper exit cut sheet presenter module plate paper guide holder plate lower paper guide C ring 46 C B 3 6 C B 3 4 plapoint C B 3 4 C B 3 4 hexagonal nut C B 3 6 C B 3 4 C B 3 4 C B 3 4 C B 3 4 C B 3 4 C B 3 4 C B 3 4 C B 3 3 C B 3 3 seal paper exit COM cover dust cap C B 3 4 cover UIB ...

Page 111: ...nting place for the controle circuit module will differ depending on users control circuit board module holding plate printer cut sheet presenter module paper exit printer module C B 3 4 C B 3 6 C B 3 4 C B 3 4 seal paper exit guide seal paper exit guide C B 3 4 plate lower paper guide plate paper guide holder ...

Page 112: ...l Supply Module Exploded Diagram paper roll hold unit C B M3 6 hexagonal nut spacer paper roll holder C ring 46 hexagon socket set screw spring paper NE detecter paper roll tension unit plate paper NE detector paper NE harness assembly frame main C P P2 photo interrupter ...

Page 113: ... 5 4 C P tite F screw M2 3 C B S tite M2 5 4 circuit board assembly spring press head paper detector assembly platen detector assembly C P M1 6 5 frame assembly motor paper feed receipt B plate pressure spring cutter frame assembly C B S tite M3 5 R E 2 5 washer 3 0 5 7 cutter drive gear sub assembly C B M2 2 5 screw switch microswitch C B M2 3 3 lead wire paper cutter cutter motor sub assembly ge...

Page 114: ...oded Diagram upper frame cut sheet presenter unit fulcrum shaft cut sheet presenter R E 4 spring cut sheet presenter R E 4 R E 5 cable presenter module C B 3 4 presenter module circuit board assembly R E 5 R E 4 gear idler lower frame unit recover feeding A assembly shaft cut sheet presenter ...

Page 115: ...Rev A Appendix 6 EU T532 T542 Technical Manual Confidential Roll Paper Supply Module Lubrication Diagram 1 13 G 36 13 G 36 14 G 36 Lubricate the point where the paper roll tension unit turns ...

Page 116: ...anual Confidential Printer Module Lubrication Diagram 3 5 G 36 5 G 36 3 G 36 7 G 36 1 G 15 4 G 36 6 G 36 2 G 36 8 G 15 8 G 15 9 G 15 9 G 15 10 G 15 11 G 36 12 G 15 10 G 15 Lubricate the points where contact with the cover cutter after assembly ...

Page 117: ...Rev A Appendix 8 EU T532 T542 Technical Manual Confidential Cut Sheet Presenter Module Lubrication Diagram 16 G 36 16 G 36 15 G 36 15 G 36 ...

Page 118: ...SEIKO EPSON CORPORATION Printed in Japan ...

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