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TSC MH261T Series Service Manual

Direct thermal bar code printer
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MH261T/ MH361T Series
THERMAL TRANSFER / DIRECT THERMAL
BAR CODE PRINTER
SERVICE
MANUAL

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Summary of Contents for TSC MH261T Series

  • Page 1 MH261T/ MH361T Series THERMAL TRANSFER / DIRECT THERMAL BAR CODE PRINTER SERVICE MANUAL...

  • Page 2: Table Of Contents

    MH261T Series Bar Code Printer Service Manua TABLE OF CONTENT 1. FUNDAMENTAL OF THE SYSTEM ................3 2. ELECTRONICS ......................7 2.1 Summary of Board Connectors ................7 2.2 Interface Pin Configuration ..................9 3. MECHANISM ......................11 3.1 Remove the Lower Front Panel ................11 3.2 Remove the Electronic Cover ................

  • Page 3: Fundamental Of The System

    MH261T Series Bar Code Printer Service Manua 1. FUNDAMENTAL OF THE SYSTEM 1.1.1 Front View LED indicator LCD display Front panel buttons USB host x 2 Media view window Paper exit chute Printer cover...
  • Page 4 MH261T Series Bar Code Printer Service Manua 1.1.2 Interior View Ribbon rewind spindle Media damper Z axis mechanism adjustment knob Print head Gap sensor (shown as  ) Print head pressure adjustment knobs Print head release lever Platen roller Black mark sensor (shown as )
  • Page 5 MH261T Series Bar Code Printer Service Manua 1.1.3 Rear View External label entrance chute Power cord socket Power switch Centronics interface Slot-in Wi-Fi module (Option) RS-232C interface Ethernet interface USB interface GPIO interface (Option) SD card socket...
  • Page 6 MH261T Series Bar Code Printer Service Manua * Recommended microSD card specification Approved microSD Type microSD card spec microSD card capacity card manufacturer V2.0 Class 4 Transcend V2.0 Class 4 Transcend V3.0 Class 10 UHS-I 16G Transcend microSD V3.0 Class 10 UHS-I 32G Transcend V3.0 Class 10...

  • Page 7: Electronics

    MH261T Series Bar Code Printer Service Manua 2. ELECTRONICS 2.1 Summary of Board Connectors Main board...
  • Page 8 MH261T Series Bar Code Printer Service Manua Connector Description USB Host connector Power supply output (5V/36V DC) connector Wi-Fi Module connector Parallel Port board connector GPIO interface board connector Head open sensor connector Gap sensor connector Ribbon encoder sensor connector...

  • Page 9: Interface Pin Configuration

    MH261T Series Bar Code Printer Service Manua 2.2 Interface Pin Configuration RS-232C CONFIGURATION +5 V PIN CONFIGURATION Ethernet PIN CONFIGURATION...
  • Page 10 MH261T Series Bar Code Printer Service Manua Cutter/peel-off Sensor Connector Description Voltage 0V: Cutter work Cutter enable 5V: Cutter stop 0V: Cutter positive cut Cutter direction 5V: Cutter negative cut Cutter position 0V: Cutter stop 9 7 4 3 1 sensor switch 3.3V: Cutter work...

  • Page 11: Mechanism

    MH261T Series Bar Code Printer Service Manua 3. MECHANISM 3.1 Remove the Lower Front Panel 1. Unscrew 2 screws to remove the front panel. 2. Reassemble the parts in the reverse procedures.

  • Page 12: Remove The Electronic Cover

    MH261T Series Bar Code Printer Service Manua 3.2 Remove the Electronic Cover 1. Open Media Cover and unscrew 2 screws as below. 2. Unscrew 2 screws on back side of the printer.
  • Page 13 MH261T Series Bar Code Printer Service Manua 3. Take up the electronic cover 4. Reassemble the parts in the reverse procedures.

  • Page 14: Remove The Media Cover

    MH261T Series Bar Code Printer Service Manua 3.3 Remove the Media Cover 1. Refer 3.2 to open the Electronic Cover. 2. Unscrew 6 screws. 3. Reassemble the parts in the reverse procedures.

  • Page 15: Replacing The Platen Roller Assembly

    MH261T Series Bar Code Printer Service Manua 3.4 Replacing the Platen Roller Assembly 1. Open the printer cover. 2. Push the print head release lever to open the print head mechanism. 3. Refer to section 3.1 to remove the lower front panel.
  • Page 16 MH261T Series Bar Code Printer Service Manua 5. Unscrew 2 screws to remove the plate. Unscrew 1 screw on the side of the platen roller then take out the platen roller. 7. Reassemble the parts in the reverse procedures.

  • Page 17: Replacing The Printhead Assembly

    MH261T Series Bar Code Printer Service Manua 3.5 Replacing the Printhead Assembly 1. Open the printer cover and print head release lever. 2. Use key or tools to push the hook to the right side.
  • Page 18 MH261T Series Bar Code Printer Service Manua 3. Carefully disconnect connectors from the print head assembly. Please push the key in the middle of the connector. When the connector becomes loose from the print head connector, you can disconnect and replace it.

  • Page 19: Replacing The Lcd Panel Module

    MH261T Series Bar Code Printer Service Manua 3.6 Replacing the LCD Panel Module 1. Refer to section 3.2 to remove the electronics cover. 2. Push the indicated location to dissemble the panel cover 3. Remove the cable and harness from the module.

  • Page 20: Replacing The Lcd Control Board & Lcd Touch Panel

    MH261T Series Bar Code Printer Service Manua 3.7 Replacing the LCD Control Board & LCD Touch Panel 1. Follow the previous step (refer to section 3.6) to remove the LCD panel module. 2. Remove the FPC harness from the LCD control board.

  • Page 21: Replacing The Usb Hub And Bt Module

    MH261T Series Bar Code Printer Service Manua 3.7.1 Replacing the USB hub and BT Module Refer section 3.6 to open the front panel cover Unscrew indicated location to replace the USB hub and BT module. BT module...

  • Page 22: Replacing The Gpio Interface

    MH261T Series Bar Code Printer Service Manua 3.8 Replacing the GPIO interface 1. Refer 3.2 to remove the electronic cover 2. Unscrew 2 screws from the back side of the printer as indicated. 3. Disconnect the cable from the interface card and mainboard..
  • Page 23 MH261T Series Bar Code Printer Service Manua 3.9 Replacing the Mainboard 1. Refer 3.2 to remove the electronic cover. 2. Unscrew the indicated screws on the backside of the printer.
  • Page 24 MH261T Series Bar Code Printer Service Manua 3. Unscrew 2 cooper pillars and 4 screws as below.
  • Page 25 MH261T Series Bar Code Printer Service Manua 4. Disconnect the connectors 5. Reassemble the parts in reverse procedures.
  • Page 26 MH261T Series Bar Code Printer Service Manua 3.10 Replacing the Parallel Port Board 1. Refer 3.2 to remove electronic cover 2. Disconnect the cable from the main board. 3. Refer 3.9 to remove the main board.
  • Page 27 MH261T Series Bar Code Printer Service Manua 4.Unscrew 2 screws and unplug the cable form parallel board. 5. Unscrew 2 marked screw as shown 6. Reassemble to parts in reverse procedures.

  • Page 28: Replacing The Power Supply Unit

    MH261T Series Bar Code Printer Service Manua 3.11 Replacing the Power Supply Unit Refer to section 3.2 to remove the electronics cover. Refer to section 3.9 to remove the main board. Remove 2 screws (fastened by 7.5 kg±15% kg-cm) and 2 copper pillars as indicated.

  • Page 29: Replacing Motor Assembly

    MH261T Series Bar Code Printer Service Manua 3.12 Replacing Motor Assembly 1. Refer to section 3.2 to remove the electronic cover. 2. Remove 4 marked screws and unplug the cable. 3. Reassemble the parts in the reverse procedures.

  • Page 30: Replacing Media Spindle

    MH261T Series Bar Code Printer Service Manua 3.13 Replacing Media Spindle 1. Refer to section 3.2 to remove the electronics cover. 2. Refer to section 3.9 to remove mainboard. 3. Refer to section 3.10 to remove power supply. 4. Unscrew the indicated screw as below.
  • Page 31 MH261T Series Bar Code Printer Service Manua 4. Reassemble the parts in the reverse procedures.

  • Page 32: Replacing Media Guide Bar

    MH261T Series Bar Code Printer Service Manua 3.14 Replacing Media Guide Bar Refer to section 3.2 to remove the electronics cover. Refer 3.9 to remove the main board. Refer 3.10 to remove the power supply. Remove the marked hex screw.
  • Page 33 MH261T Series Bar Code Printer Service Manua 6. Reassemble the parts in the reverse procedures.

  • Page 34: Replacing Ribbon Supply Spindle

    MH261T Series Bar Code Printer Service Manua 3.15 Replacing Ribbon Supply Spindle 1. Refer to section 3.2 to remove the electronics cover. 2. Remove the marked hex screw. 3. Remove the ribbon supply assembly. 4. Reassemble the parts in the reverse procedures.

  • Page 35: Replacing Ribbon Rewind Spindle

    MH261T Series Bar Code Printer Service Manua 3.16 Replacing Ribbon Rewind Spindle 1. Refer to section 3.2 to remove the electronics cover. 2. Remove the marked hex screw. 3. Remove the ribbon rewind spindle. 4. Reassemble the parts in the reverse procedures.

  • Page 36: Replacing Damper

    MH261T Series Bar Code Printer Service Manua 3.17 Replacing Damper 1. Refer to section 3.2 to remove the electronics cover. 2. Remove the marked hex screw.
  • Page 37 MH261T Series Bar Code Printer Service Manua 3. Remove the damper. 4. Reassemble the parts in the reverse procedures.

  • Page 38: Replacing Gap/Black Mark Sensor Module

    MH261T Series Bar Code Printer Service Manua 3.18 Replacing Gap/Black Mark Sensor Module 1. Refer to section 3.2 to remove the electronics cover. 2. Disconnect the gap/black mark sensor connectors from the main board. 3. Unscrew the marked 2 screws...
  • Page 39 MH261T Series Bar Code Printer Service Manua 5. Reassemble the parts in reverse procedure.

  • Page 40: Cutter Module Installation (Option)

    MH261T Series Bar Code Printer Service Manua 3.19 Cutter Module Installation (Option) Refer to section 3.1 to remove the lower front panel. Use tool to pry up the cutter.
  • Page 41 MH261T Series Bar Code Printer Service Manua Screws 3. Refer 3.2 to remove the lower front cover.
  • Page 42 MH261T Series Bar Code Printer Service Manua 4. Place the cutter as indicated position and let cables go under through print module. 4. Screw 2 screws as shown. 5. Press to close the cutter.
  • Page 43 MH261T Series Bar Code Printer Service Manua 6. Connect the cable into the slot. 7. Remove the parts in reverse procedures.

  • Page 44: Peel-Off Kit Installation (Option)

    MH261T Series Bar Code Printer Service Manua 3.20 Peel-off Kit Installation (Option) 1. Take the 2 screws and the gears. 2. Install the bigger one on the indicated position and fasten the screw...
  • Page 45 MH261T Series Bar Code Printer Service Manua 3. Install the smaller one and fasten the gear. Take 2 rings as shown. Place 1 ring in below position.
  • Page 46 MH261T Series Bar Code Printer Service Manua Install the peeler’s spindle. Place the other ring from electronic cover’s side and push it into bottom. 6. Take 2 circlip as shown...
  • Page 47 MH261T Series Bar Code Printer Service Manua Insert 1 circlip at below position Put the third gear into the spindle.
  • Page 48 MH261T Series Bar Code Printer Service Manua Insert second circlip on below position 9. Refer to 3.1 to remove the lower front panel. 10. Fasten 2 screws at marked position. Connect the cables into the slot between damper and the peeler spindle.
  • Page 49 MH261T Series Bar Code Printer Service Manua Remove the parts in the reverse procedures.

  • Page 50: Internal Rewinder Installation (Option)

    MH261T Series Bar Code Printer Service Manua 3.21 Internal Rewinder Installation (Option) 1. Take the 2 screws and the gears. 2. Install the bigger one on the indicated position and fasten the screw...
  • Page 51 MH261T Series Bar Code Printer Service Manua 3. Install the smaller one and fasten the gear. 4. Take 2 rings as shown. 5. Place 1 ring in below position.
  • Page 52 MH261T Series Bar Code Printer Service Manua 6. Install the rewinder’s spindle. 7. Place the other ring from electronic cover’s side and push it into bottom. 8. Take 2 circlip as shown...
  • Page 53 MH261T Series Bar Code Printer Service Manua 9. Insert 1 circlip at below position 10. Put the third gear into the spindle.
  • Page 54 MH261T Series Bar Code Printer Service Manua 11. Insert second circlip on below position 12. Refer to 3.1 to remove the lower front panel. 13. Install front cover and fasten 2 screws at marked position.
  • Page 55 MH261T Series Bar Code Printer Service Manua 11. Remove the parts in reverse procedures.

  • Page 56: Wifi Module Installation (Option)

    3.22 WiFi Module Installation (Option) 1. Before replacing the new Wi-Fi module, please set the default to clear the old Wi-Fi settings in the printer via TSC Console. And you need to reset the Wi-Fi settings after replacing the new Wi-Fi module.
  • Page 57 MH261T Series Bar Code Printer Service Manua 4. Connect the cables to mainboard.
  • Page 58 MH261T Series Bar Code Printer Service Manua 5. Fasten 2 screws on housing. 6. Insert the WiFi+BT Combo module and fasten the other 2 screws. 7. Reassemble the parts in reverse procedures.

  • Page 59: Trouble Shooting

    MH261T Series Bar Code Printer Service Manua 4. TROUBLE SHOOTING The following guide lists the most common problems that may be encountered when operating this bar code printer. If the printer still does not function after all suggested solutions have been invoked, please contact the Customer Service Department of your purchased reseller or distributor for assistance.
  • Page 60 MH261T Series Bar Code Printer Service Manua incorrectly. manual to reinstall the label roll. * Gap/black mark sensor * Calibrate the gap/black mark is not calibrated. sensor. * Gap/black mark sensor is not set properly. * Calibrate the media sensor.
  • Page 61 MH261T Series Bar Code Printer Service Manua * The printer is in Hex * Turn off and on the printer to skip Dump mode. Irregular printing the dump mode. * The RS-232 setting is * Re-set the Rs-232 setting. incorrect.
  • Page 62 MH261T Series Bar Code Printer Service Manua * Calibrate the sensor sensitivity again. * Set the correct label size and gap size. * Press [Menu]  [Setting]  [Shift X] to fine tune the parameter of Shift X. * If using the software BarTender,...

  • Page 63: Maintenance

    MH261T Series Bar Code Printer Service Manua 5. MAINTENANCE This session presents the clean tools and methods to maintain your printer.  For Cleaning Depending on the media used, the printer may accumulate residues (media dust, adhesives, etc.) as a by-product of normal printing. To maintain the best printing quality, you should remove these residues by cleaning the printer periodically.

  • Page 64: Update History

    MH261T Series Bar Code Printer Service Manua  99% Isopropyl alcohol (for printhead and platen roller cleaning)  Genuine printhead cleaning pen  Mild detergent (without chlorine)  Cleaning Process Printer Part Method Interval 1. Always turn off the printer before cleaning the printhead.
  • Page 65 MH261T Series Bar Code Printer Service Manua...
  • Page 66 9F., No.95, Minquan Rd., Xindian Dist., No.35, Sec. 2, Ligong 1st Rd., Wujie Township, New Taipei City 23141, Taiwan (R.O.C.) Yilan County 26841, Taiwan (R.O.C.) TEL: +886-2-2218-6789 TEL: +886-3-990-6677 FAX: +886-2-2218-5678 FAX: +886-3-990-5577 Web site: www.tscprinters.com E-mail: apac_sales@tscprinters.com TSC Auto ID Technology Co., Ltd. tech_support@tscprinters.com...

This manual is also suitable for:

Mh361t series

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