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TSC Alpha-4L Service Manual

Dicrect therma mobile barcode printers
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;'RFTGTT5RT12
Alpha-4L
Dicrect Therma
Mobile Barcode Printers
Service Manual

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Summary of Contents for TSC Alpha-4L

  • Page 1 ;’RFTGTT5RT12 Alpha-4L Dicrect Therma Mobile Barcode Printers Service Manual...
  • Page 2 All other trademarks are the property of their respective owners. Information in this document is subject to change without notice and does not represent a commitment on the part of TSC Auto ID Technology Co. No part of this manual may be reproduced or transmitted in any form or by any means, for any purpose other than the purchaser’s personal use, without the...

  • Page 3: Table Of Contents

    Table of Content 1. Fundamental of the System ....................................1 1.1 Printer Overview ......................................1 Front View ........................................1 Rear View ........................................2 2. Electronics .........................................3 2.1 Summary of the Board Connectors ................................3 3. Mechanism ........................................15 3.1 Replacing the Planten Roller ..................................15 3.2 Replacing the Print Head Assembly ................................
  • Page 4 3.13 Replacing the Charger Board Assembly ..............................28 3.14 Replacing the Wi-Fi Module ..................................29 3.15 Replacing the RTC Battery (Option) ................................. 30 4. TroubleShooting ......................................31 5. Maintenance ........................................33 Revise History ........................................35...

  • Page 5: Fundamental Of The System

    1. Fundamental of the System 1.1 Printer Overview Front View Power on/off button Feed button Printer status LED indicator Battery status LED indicator Media cover release button Peel-off sensor (Without for linerless model) Print head Transmissive sensor – Gap sensor Media holder lock switch Media holder Media cover...

  • Page 6: Rear View

    Rear View Belt chip Battery open clasp Li-ion battery External label entrance chute Hanger for shoulder strap USB interface * MicroSD card socket Power jack...

  • Page 7: Electronics

    2. Electronics 2.1 Summary of the Board Connectors Main board top CON10 J101 CON10 J401 CON10 J404...
  • Page 8 Connector Description DC Jack J101 12V DC IN Micro SD connector Description SD_Data2 SD_Data3 SD_CMD 3.3V J401 SD_CLK SD_Data0 SD_Data1...
  • Page 9 Micro USB Description VBUS J404 Pin 10 Battery  CON101 pin1~4 & CON102 pin1 for battery positive  CON103 pin1~4 & CON102 pin4 for battery negative  CON101 CON102 pin2~3 for NTC CON102 CON103...
  • Page 10 Main board bottom J501 J301 J403 BAT1 J603 J601 J600 J602...
  • Page 11 Connector Description For LCD & LED board Description 3.3V PEEL_E PEEL_R 8V battery J600 LED_Charging off & low battery Pin 1 LED_Charging Power KEY Feed KEY Description /HPM J601 Pin 1...
  • Page 12 CAP2- CAP2+ CAP1+ CAP1- CAP3+ VOUT 3.3V LCM_D7 LCM_D6 LCM_D5 LCM_D4 LCM_D3 LCM_D2 LCM_D1 LCM_D0 LCM_RD LCM_WR LCM_A0 /LCM_RST /LCM_CS...
  • Page 13 For LED Board Description 3.3V LED_STATUS LED_ERROR J602 LED_FULL BATTERY LED_HALF BATTERY LED_BT LED_WIFI For LCD board Description J603 3.3V LED_ERROR MANUAL KEY INFO KEY...
  • Page 14 Download port Description 3.3V /RESET MISO MOSI WiFi connector Description 3.3V /WIFI_RST J402 WIFI_RXD WIFI_RST WIFI_TXD WIFI_CTS Bluetooth connector Description 3.3V BT_RST J403 BT_RXD BT_RTS BT_TXD BT_CTS...
  • Page 15 BT_DISCON BT_CON Stepping motor Description AOUT1 J501 AOUT2 BOUT1 BOUT2 Black mark sensor Description J701 3.3V BM_E BM_R...
  • Page 16 Gap sensor Description J702 3.3V GAP_R Hand open senor Description J703 HEAD Print head Description J301 /LAT TPH_CLK 3.3V_TPH STB1...
  • Page 17 STB2 STB3 STB4 STB5 STB6 STB7...
  • Page 18 Charger station Description 12V_IN S101 12V_IN RTC battery Description BAT1...

  • Page 19: Mechanism

    3. Mechanism 3.1 Replacing the Planten Roller Open the printer cover. Use a tool to take the platen roller off. Replace the platen roller. Reassemble the parts in the reverse procedures.

  • Page 20: Replacing The Print Head Assembly

    3.2 Replacing the Print Head Assembly Refer to section 3.1 to remove the printer top cover. Use hex wrench (#2.5) to remove two screws on lower cover. Open the printer cover and remove 4 screws on lower inner cover. Remove the upper cover carefully.
  • Page 21 Remove 2 screws on the each side of lower inner cover to remove the print head spring fixture. Loosen the connector lock (black) then disconnect the flat cable from the main board. Remove the print head assembly. Reassemble the parts in the reverse procedures.

  • Page 22: Replacing The Bluetooth Module (Option)

    3.3 Replacing the Bluetooth Module (Option) Refer to section 3.2 to remove the upper cover and disconnect the cables from the main board. Note: For the flat cable (LCD control board), please loosen the connector lock (brown) then disconnect the cable. Keys control board cable LCD control board cable Remove 4 screws on the keys control board/ LCD control board and disconnect the peel-off sensor connector by loosen the...

  • Page 23: Replacing The Peel-Off Sensor Module

    3.4 Replacing the Peel-off Sensor Module Refer to section 3.2 to remove the upper cover. Disconnect the peel-off sensor connector by loosen the connector lock for panel board. Remove 1 screw. Replace the peel-off sensor module. Reassemble the parts in the reverse procedures.

  • Page 24: Replacing The Bluetooth Module

    3.5 Replacing the Bluetooth Module Refer to section 3.2 to remove the upper cover. Remove 2 screws on the Bluetooth control board. Use a tool to remove the spacer support on the Bluetooth control board. Disconnect the connector on the board. Replace the Bluetooth module. Reassemble the parts in the reverse procedures.

  • Page 25: Replacing The Main Board Assembly

    3.6 Replacing the Main Board Assembly Refer to section 3.5 to remove the upper cover and Bluetooth control board. Remove 2 screws on the main board. Disconnect all the connectors on the main board. Replace the main board. Reassemble the parts in the reverse procedures.

  • Page 26: Replacing The Stepping Motor

    3.7 Replacing the Stepping Motor Refer to section 3.2 to remove the upper cover. Remove 5 screws. Disconnect the connectors on main board to take out the internal mechanism. Remove 2 screws to replace the stepping motor. Reassemble the parts in the reverse procedures.

  • Page 27: Replacing The Gap Sensor Assembly

    3.8 Replacing the Gap Sensor Assembly Refer to section 3.7 to take out the internal mechanism. Loosen 2 springs. Remove 4 screws on the internal mechanism to replace the gap sensor assembly. Reassemble the parts in the reverse procedures.

  • Page 28: Replacing The Media Holder Assembly

    3.9 Replacing the Media Holder Assembly Refer to section 3.8 to remove the gap sensor assembly. Replace the media holder assembly. Reassemble the parts in the reverse procedures.

  • Page 29: Replacing The Hand Open Sensor Assembly

    3.10 Replacing the Hand Open Sensor Assembly Refer to section 3.7 to take out the internal mechanism. Remove 1 screw to replace the hand open sensor assembly. Reassemble the parts in the reverse procedures.

  • Page 30: Replacing The Peel-Off Module

    3.11 Replacing the Peel-off Module Refer to sections 3.1 and 3.7 to remove the platen roller and take out the internal mechanism. Remove 4 screws on upper cover to take out the black mark sensor module. Replacing the Peel-off cover. Reassemble the parts in the reverse procedures.

  • Page 31: Replacing The Black Mark Sensor Assembly

    3.12 Replacing the Black Mark Sensor Assembly Refer to sections 3.11 to take out the black mark sensor assembly. Disconnect the black mark sensor connector from main board. Reassemble the parts in the reverse procedures.

  • Page 32: Replacing The Charger Board Assembly

    3.13 Replacing the Charger Board Assembly Refer to the section 3.7 to take out the internal mechanism. Disconnect the connector on the main board. Remove 2 screws to replacing the charger board assembly. Reassemble the parts in the reverse procedures.

  • Page 33: Replacing The Wi-Fi Module

    3.14 Replacing the Wi-Fi Module Refer to section 3.2 to remove the upper cover. Disconnect the antenna connector gently. Remove the screw and loose the spacer support on the Wi-Fi module. Antenna connector Replace the Wi-Fi module board. Arrange cable of antenna as indicated. Reassemble the parts in the reverse procedures.

  • Page 34: Replacing The Rtc Battery (Option)

    3.15 Replacing the RTC Battery (Option) Please refer to section 3.1 take the printer top cover off and replace a new one with platen roller. Refer to section 3.14 to remove the WiFi module. Disconnect the connector on the main board. Replace the RTC battery.

  • Page 35: Troubleshooting

    Power indicator does not illuminate * Switch the printer on. * The battery is dead. * Charge the battery. - The printer status from TSC Console * The printer carriage is open. * Please close the print carriage. shows “Head Open”.
  • Page 36 Missing printing on the left or right * Wrong label size setup. * Set the correct label size. side of label * The print head is dirty. * Clean the print head. Gray line on the blank label * The platen roller is dirty. * Clean the platen roller.

  • Page 37: Maintenance

    5. Maintenance This session presents the clean tools and methods to maintain the 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. Regularly clean the print head and supply sensors once change a new media to keep the printer at the optimized performance and extend printer life.
  • Page 38 Cleaning Tools  Cotton swab  Lint-free cloth  Brush with soft non-metallic bristles  Vacuum cleaner  75% Ethanol (for disinfecting)  99% Isopropyl alcohol (for printhead and platen roller cleaning)  Genuine printhead cleaning pen  Mild detergent (without chlorine) Cleaning Process: Printer Part Method...

  • Page 39: Revise History

    Revise History Date Content Editor...

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