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Brother P-touch QL-1050 Service Manual
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Brother P-touch QL-1050 Service Manual

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SERVICE MANUAL
MODEL: QL-1050

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Summary of Contents for Brother P-touch QL-1050

  • Page 1 P-touch SERVICE MANUAL MODEL: QL-1050...
  • Page 2 PREFACE This publication is a service manual covering the specifications, theory of operation, disassembly/reassembly procedure, and troubleshooting the Brother QL-1050. It is intended for service personnel and other concerned persons to accurately and quickly provide after-sale service for our QL-1050.

  • Page 3: Table Of Contents

    CONTENTS CHAPTER I SPECIFICATIONS ................I-1 MECHANICAL SPECIFICATIONS ................I-1 1.1.1 External Appearance ..................I-1 1.1.2 Keyboard......................I-1 1.1.3 Display ....................... I-1 1.1.4 Printing Mechanism ................... I-2 1.1.5 Thermal Tape..................... I-2 1.1.6 Cutter ......................... I-3 1.1.7 PC Interface ....................... I-3 ELECTRONICS SPECIFICATIONS .................
  • Page 4 MAIN PCB ......................... II-8 2.3.1 Logic Components ..................... II-9 [ 1 ] CPU ........................ II-9 [ 2 ] Flash ROM...................... II-9 [ 3 ] SDRAM ......................II-9 [ 4 ] EEPROM ......................II-9 2.3.2 Key, LED Circuit....................II-10 2.3.3 Head and Motor Power Supply ON/OFF Circuit..........II-11 2.3.4 Full Cutter Motor Driver Circuit and Media Feed Motor Driver Circuit....
  • Page 5 [ 3 ] Installing the Mecha ASSY and Cutter unit ASSY.......... III-34 [ 4 ] Installing the Front Side Cover, Panel Cover and Front Cover ...... III-37 [ 5 ] Installing the Upper Cover ASSY..............III-40 [ 6 ] Installing the Power Supply and Main PCB ............ III-42 [ 7 ] Reassembling the Top Cover ASSY ..............

  • Page 6: Chapter I Specifications

    CHAPTER I SPECIFICATIONS MECHANICAL SPECIFICATIONS 1.1.1 External Appearance [ 1 ] Dimensions (W x D x H) 170mm x 222mm x 147.5mm [ 2 ] Weight Approx. 1.7kg (Machine proper only) 147.5mm 170mm Fig. 1.1-1 External Appearance 1.1.2 Keyboard [ 1 ] Number of function keys [ 2 ] Key arrangement...

  • Page 7: Printing Mechanism

    1.1.4 Printing Mechanism [ 1 ] Print method Direct thermal printing with thermal head Printing on thermal paper tape, and printing on thermal paper and thermal plastic tape (with fixed head and tape feeding) [ 2 ] Highest printing speed 110mm/sec [ 3 ] Print head...

  • Page 8: Cutter

    1.1.6 Cutter [ 1 ] Tape cutting Automatic cut (Cutter unit is user unexchangeable component) 1.1.7 PC Interface [ 1 ] Method Standard USB Standard Ver.2.0 Full speed(12Mbps) [ 2 ] Supported OS Microsoft Windows 98 SE Microsoft Windows ME Microsoft Windows 2000 Professional Microsoft Windows XP Professional Microsoft Windows XP Home Edition...

  • Page 9: Chapter Ii Theory Of Operation

    CHAPTER II THEORY OF OPERATION OUTLINE OF MECHANISMS 2.1.1 Print Mechanism I Structure of Thermal Head This machine adopts direct thermal printing system. The thermal head consists of 1296 pieces of heating elements arrayed in vertical single row as shown in the Fig. 2.1-1. The dimension of each heating element is vertical length 0.0847(0.0847mm pitch) x horizontal width 0.13mm.

  • Page 10: Press Contact And Release Mechanism Of Thermal Head

    2.1.2 Press Contact and Release Mechanism of Thermal Head The head ASSY is pressed firmly against the platen by the force of spring. When the release levers L and R are pulled upwards, they are unlocked so that the platen and top cover are released.

  • Page 11: Tape Feed Mechanism

    2.1.3 Tape Feed Mechanism When the tape is fed, the tape is pressed against the thermal head, which is nipped between the platen and the thermal head. Here, the tape feed motor (step motor) rotates, of which drive power is transmitted via the gear train to the platen gear and the platen, and consequently the platen can feed the tape.

  • Page 12: Automatic Tape Full Cutter Mechanism

    2.1.4 Automatic Tape Full Cutter Mechanism The automatic tape full cutter mechanism moves the moving cutter blade up and down to the direction of the fixed cutter blade to cut the tape on the feeding pass. The cam is rotated once so that the moving cutter blade moves up and down and cuts a medium.

  • Page 13: Cover Open (Cover Lock) Sensor

    2.1.5 Cover Open (Cover Lock) Sensor The cover open (cover lock) sensor R (push switch) is mounted on the SB PCB ASSY. The cover open sensor L is secured on the cutter unit ASSY with the screw. Closing the top cover ASSY, the cover sensor arms R and L push the cover open (cover lock) sensors (R and L) (push switch) and the signal of top cover ASSY close status is output.

  • Page 14: Outline Of Control Electronics

    OUTLINE OF CONTROL ELECTRONICS Fig. 2.2-1 shows the block diagram of the control electronics. The control electronics consist of the following components. Fan motor unit Serial Cutter motor Cutter home position sensor CN11 CN13 CN10 CN14 CN15 Cover open sensor Media position Key, LED PCB detect sensor...

  • Page 15: Key, Led Pcb (Sb Pcb

    2.2.3 Key, LED PCB (SB PCB) This is the PCB equipped with ON/OFF button, FEED button, CUT button, cover open sensor and LED lamp. 2.2.4 Cutter Home Position Sensor This sensor detects existence of the cutter at its home position. 2.2.5 Media Feed Motor (Tape Feed Motor) The media feed motor supplies the drive power to feed media.

  • Page 16: Main Pcb

    MAIN PCB Fig. 2.3-1 shows the block diagram of the main PCB. The main PCB consists of the following components. CPU (Including ROM and RAM) Flash ROM, SDRAM EEPROM (4Kbit) Power supply ON/OFF circuit, FEED button ON/OFF circuit, CUT button ON/OFF circuit, LED ON/OFF circuit Head power supply ON/OFF circuit Full cutter motor driver circuit, and Media feed motor driver circuit...

  • Page 17: Logic Components

    2.3.1 Logic Components [ 1 ] CPU (U9) controls and manages the entire system, which is 32bit microcomputer of NEC brand. [ 2 ] Flash ROM One 32M-bit flash ROM is used, where the program, font and downloaded data are stored.

  • Page 18: Key, Led Circuit

    2.3.2 Key, LED Circuit - Power supply ON/OFF circuit This circuit detects the state of ON/OFF of the ON/OFF button. Pressing this button in the power supply OFF state (LED OFF), LOW signal is sent to the CPU. Then the CPU starts initializing process and establishes the status of power supply ON (LED ON and ready for date acceptance from PC).

  • Page 19: Head And Motor Power Supply On/Off Circuit

    2.3.3 Head and Motor Power Supply ON/OFF Circuit Turning the CPU status of 91pin (VHON) to High, Q3 turns on, V (25V power supply) turns on and consequently the head and motor is energized. Turning the CPU status of 91pin (VHON) to Low, Q3 turns off, V (25V power supply) turns off and consequently the head and motor power supply is cut off.

  • Page 20: Full Cutter Motor Driver Circuit And Media Feed Motor Driver Circuit

    2.3.4 Full Cutter Motor Driver Circuit and Media Feed Motor Driver Circuit Full Cutter motor driver circuit The circuit drives the DC motor to cut a medium as described in subsection 2.1.4 “Automatic Tape Full Cutter Mechanism”. When the CPU receives cut request from the key or software, it confirms that the top cover ASSY is closed, and turns VHON (91 pin) high.

  • Page 21: Media Type Sensor Circuit, Media Position Detect Sensor Circuit And Cover Open Sensor Circuit

    2.3.5 Media Type Sensor Circuit, Media Position Detect Sensor Circuit and Cover Open Sensor Circuit Media type sensor circuit The sensor circuit consists of media sensor with six switch systems (CAS1 through CAS6). Loading a tape cassette, some of six switches turn on and the others retain off according to the configuration of its’...
  • Page 22 Media type No media (not loaded) Standard Address Large Address Small Address Shipping Multi Purpose File Folder CD/DVD 29mm x 42mm 62mm x 42mm 62mm x 57mm Reserved Reserved 102mm x 51mm 102mm x 152mm Reserved Reserved φ 12mm φ 24mm Continuous Length Paper 102 Continuous Length Paper 29...
  • Page 23 Fig. 2.3-6 Media Position Detect Sensor Circuit Cover open sensor circuit QL-1050 has the cover open sensor. It identifies open/close of the top cover ASSY from the status of mechanical switch. Opening the top cover ASSY, the contact of cover open sensor on SB PCB opens.

  • Page 24: Head Temperature Detect Circuit

    Fig. 2.3-9 Cutter Home Position Sensor Circuit 2.3.8 Reset Circuit QL-1050 receives the electric power from the power supply PCB and output +5V and +3v to the CPU. When the power is supplied, the reset circuit (U10) returns high to reset input pin (66pin) of the CPU when detecting the voltage the +3V voltage line rises over +2.8V.

  • Page 25: Usb Interface Circuit

    2.3.9 USB Interface Circuit The CPU of QL-1050 is connected with a PC using the USB cable via U7 and CN2. U7 and CPU (U9) establishes bus connection with 8-bits to send and receive the data. Fig. 2.3-11 USB Interface Circuit 2.3.10...

  • Page 26: Chapter Iii Disassembly And Reassembly

    CHAPTER III DISASSEMBLY AND REASSEMBLY SAFETY PRECAUTIONS (1) The disassembly or reassembly work should be carried on a grounded antistatic sheet. Otherwise, the LSIs and electronic parts may be damaged due to the electricity charged in your body. (2) When transporting PCBs, be sure to wrap them in conductive sheets such as aluminum foil.

  • Page 27: Tightning Torque Lists

    TIGHTNING TORQUE LISTS Tightening torque Location Screw type Q’ty N•cm 0.392 ± 0.098 Chassis L sub ASSY Screw, bind 2.6 x 4 0.392 ± 0.098 Chassis R sub ASSY Screw, bind 2.6 x 4 0.588 ± 0.098 Head ASSY Screw, bind 3 x 3 Tape feed motor ASSY 0.588 ±...

  • Page 28: Lubrication Points List

    LUBRICATION POINTS LIST * Grease to be used: Grease B (one rice-grain size) Cut moving pin Cut worm gear * Grease to be used: FLOIL BG-1507 (one rice-grain size) * Grease to be used: FLOIL BG-1507 (one rice-grain size) * Grease to be used: FLOIL BG-1507 (one rice-grain size) * Grease to be used: Grease B (one rice-grain size)
  • Page 29 Mecha ASSY * Grease to be used: Silicon grease G501 (one rice-grain size) Double gear B Double gear C Double gear A III- 4...

  • Page 30: Disassembly Procedure

    DISASSEMBLY PROCEDURE [ 1 ] Removing the Top Cover ASSY and Thermal Tape Note: Turn on the power supply with top cover closed and initialize the machine before disassembly. (1) Turn off the power supply and remove the AC cord. Note: Disconnect the AC cord from the outlet.
  • Page 31 (4) Push the hooks inwards to release them and remove the back cover from the machine. Hook Back cover Hook Fig. 3.1-3 Removing the Top Cover ASSY and Thermal Tape (3) (5) Slide the two top cover shafts inwards to remove them, and remove the top cover ASSY. Top cover ASSY Top cover shaft Fig.

  • Page 32: 2 ] Disassembling The Top Cover Assy

    [ 2 ] Disassembling the Top Cover ASSY (1) Remove the four screws and remove the side panel L and side panel R. Side panel L Top cover Side panel R Screws Screws Fig. 3.1-5 Disassembling the Top Cover ASSY (1) III- 7...
  • Page 33 (2) Remove the two retaining rings and remove the two platen shaft bearings, platen gear and platen ASSY. Top cover Platen shaft bearing Retaining ring Platen shaft bearing Platen gear Platen ASSY Retaining ring Top cover Platen ASSY Platen shaft bearing Platen shaft bearing Platen gear Retaining ring...

  • Page 34: 3 ] Removing The Upper Cover Assy

    [ 3 ] Removing the Upper Cover ASSY (1) Turn the machine upside down. (2) Remove the four screws and remove the lower plate. Screws Lower plate Screw Screw Fig. 3.1-7 Removing the Upper Cover ASSY (1) (3) Disconnect all connectors from the main PCB. Main PCB Fan motor Tape feed motor ASSY...
  • Page 35 (4) Place the machine the right way up. (5) Remove the three screws and two screws from the upper cover ASSY. (6) Remove the upper cover ASSY from the under cover. Note: The screws (A) are screw, bind B M2.6x4. Other screws are taptite, bind B M2.6x6.
  • Page 36 (7) Remove the one screw and remove the insert guide from the upper cover ASSY. (8) Remove the tape sensor PCB ASSY from the insert guide. Tape sensor PCB ASSY Insert guide Upper Cover ASSY Screw Fig. 3.1-10 Removing the Upper Cover ASSY (4) III- 11...

  • Page 37: 4 ] Removing The Power Supply Pcb And Main Pcb

    [ 4 ] Removing the Power Supply PCB and Main PCB (1) Turn the machine upside down. (2) Remove the three screws and remove the power supply PCB and DC8V power PCB ASSY. Note: The power supply PCB and DC8V power PCB cannot be removed from the machine in this status since the inlet of the power supply PCB is still assembled onto the under cover.
  • Page 38 (4) Disconnect the power supply harness from the power supply PCB. Power supply harness Power supply PCB Fig. 3.1-13 Removing the Power Supply PCB and Main PCB (3) (5) Remove the three screws and remove the ground spring plate and FG harness ASSY from the main PCB.
  • Page 39 Note: Pay attention to the USB connector and serial connector when removing the main PCB. Main PCB USB connector Serial connector Under cover Fig. 3.1-15 Removing the Power Supply PCB and Main PCB (5) (6) Remove the fan from the under cover. Under cover Fig.
  • Page 40 (7) Release the hooks on both sides of the inlet and pull the inlet to the direction of the arrow as shown in the figure below to remove it. For the hook on the lower side of the inlet, turn the under cover upside down and press the hook from the hole on the under cover.

  • Page 41: 5 ] Removing The Front Cover, Panel Cover And Front Side Cover

    [ 5 ] Removing the Front Cover, Panel Cover and Front Side Cover (1) Turn the machine upside down, and remove the two screws of the front cover. (2) Release the hooks of the front cover from the holes on the cutter unit ASSY and remove the front cover.
  • Page 42 (4) Pull the harness out of the hole of the under cover. Remove the one screw and remove the panel cover. Cutter unit ASSY Harness Hook Panel cover Hole Under cover Screw Hook Panel cover Fig. 3.1-21 Removing the Front Cover, Panel Cover and Front Side Cover (3) (5) Remove the one screw and release the hook to remove the front side cover.

  • Page 43: 6 ] Removing The Cutter Unit Assy And Mecha Assy

    [ 6 ] Removing the Cutter Unit ASSY and Mecha ASSY (1) Take out the harness from the hole of the under cover. (2) Remove the two screws and remove the cutter unit ASSY from the mecha ASSY. Harness Mecha ASSY Hole Harness Under cover...

  • Page 44: 7 ] Disassembling The Panel Cover

    [ 7 ] Disassembling the Panel Cover (1) Remove the two screws and remove the SB PCB ASSY and cover sensor arm R from the panel cover. Cover sensor arm R Screw Screw SB PCB ASSY Panel cover Fig. 3.1-25 Disassembling the Panel Cover (1) (2) Remove the one screw and remove the LED guide.

  • Page 45: 8 ] Disassembling The Mecha Assy

    [ 8 ] Disassembling the Mecha ASSY (1) Remove the release springs and retaining rings from both sides of the mecha ASSY and remove the release levers L and R. Release lever L Release spring Retaining ring Mecha ASSY Release lever R Release spring Retaining ring Fig.
  • Page 46 (4) Remove the four screws and remove the chassis L sub ASSY and chassis R sub ASSY. Screws Chassis L sub ASSY Sub plate Chassis R sub ASSY Screws Fig. 3.1-29 Disassembling the Mecha ASSY (3) III- 21...
  • Page 47 (5) Remove the head ASSY. Head plate Head ASSY Sub plate Note: Be careful not to give impact on the heating element of the thermal head. Head ASSY Heating element Fig. 3.1-30 Disassembling the Mecha ASSY (4) III- 22...
  • Page 48 (6) Remove the two screws and remove the head ASSY from the head plate. Head ASSY Screw Head plate Screw Fig. 3.1-31 Disassembling the Mecha ASSY (5) (7) Remove the head cable black and head cable white from the head ASSY. (8) Remove the ferrite core from the head cable black and head cable white.
  • Page 49 (9) Remove the two head springs from the sub plate. Head spring Sub plate Fig. 3.1-33 Disassembling the Mecha ASSY (7) (10) Remove the platen support from each of the chassis sub ASSYs. Platen support Chassis L sub ASSY Chassis R sub ASSY Fig.
  • Page 50 (11) Remove the two screws and remove the tape feed motor ASSY and FG harness ASSY from the chassis R sub ASSY. Tape feed motor ASSY Chassis R sub ASSY Screw FG harness ASSY Screw Fig. 3.1-35 Disassembling the Mecha ASSY (9) III- 25...

  • Page 51: Reassembling Procedure

    REASSEMBLING PROCEDURE [ 1 ] Reassembling the Mecha ASSY Note: Be careful not to cut your finger with the edge of the parts. (1) Assemble the tape feed motor ASSY and FG harness ASSY onto the chassis R sub ASSY with the two screws.
  • Page 52 (3) Push the two head springs into the sub plate. Head spring Sub plate Fig. 3.2-3 Reassembling the Mecha ASSY (3) III- 27...
  • Page 53 (4) Connect the head cable black and head cable white with the connectors on the head ASSY. (5) Put the head cable black and head cable white through the ferrite core. Ferrite core Head cable white Head cable black Head ASSY Note1: Pay attention not to give strong impact on the heating element of a head ASSY when mounting the head ASSY.
  • Page 54 (6) Assemble the head ASSY onto the head plate with the two screws. Head ASSY Screw Head plate Screw Fig. 3.2-5 Reassembling the Mecha ASSY (5) (7) Align the head ASSY with the head springs and assemble the head ASSY. Note: Confirm that the head ASSY moves smoothly.
  • Page 55 (8) Put the section “B” of the head ASSY into the hole “A” on the chassis L sub ASSY and assemble the chassis L sub ASSY onto the sub plate with the two screws. Screws Hole “A” “B” Head ASSY Chassis L sub ASSY Sub plate Note: When assembling the chassis L sub ASSY, make sure that there is no gap on the...
  • Page 56 (9) Assemble the double gears A, B and C with the retaining ring E2.5 and retaining ring E4. Note 1: Confirm that the hook of the double gear C is securely hooked on. Chassis R sub ASSY Double gear B Retaining ring E4 Double gear C Retaining ring E2.5...
  • Page 57 (11) Assemble each of the release levers L and R with the one retaining ring E2.5. (12) Assemble the release springs on both sides. Note: When assembling the release spring, pay attention to its direction. Release lever L Release spring Retaining ring E2.5 Mecha ASSY Release lever R...

  • Page 58: 2 ] Installing The Panel Cover

    [ 2 ] Installing the Panel Cover (1) Assemble the LED guide onto the panel cover with the one screw. (2) Assemble the power button and feed button onto the panel cover. Screw Power button LED guide Feed button Panel cover Fig.

  • Page 59: 3 ] Installing The Mecha Assy And Cutter Unit Assy

    [ 3 ] Installing the Mecha ASSY and Cutter unit ASSY (1) Put the two head cables, tape feed motor harness and FG harness ASSY through the two holes on the under cover referring to the figure below. Hole Hole Under cover FG harness ASSY Tape feed motor harness...
  • Page 60 (3) Put the ferrite cores of the head cables and tape feed motor harness into the place provided on the under cover as shown in the figure below. Mecha ASSY Ferrite core Ferrite core Head cable Under cover Tape feed motor harness Fig.
  • Page 61 (5) Assemble the cutter unit ASSY with the two screws while paying attention to the harnesses inside. Mecha ASSY Under cover Cutter unit ASSY Screws Fig. 3.2-17 Installing the Mecha ASSY and Cutter unit ASSY (5) (6) Put each of the harnesses of the cutter unit ASSY through the holes on the under cover. Hook Hole Cutter unit harness...

  • Page 62: 4 ] Installing The Front Side Cover, Panel Cover And

    [ 4 ] Installing the Front Side Cover, Panel Cover and Front Cover (1) Align the pins of the panel cover and front side cover with the holes on the cutter unit ASSY, then assemble each of them with the one screw. Cutter unit ASSY Front side cover Hook...
  • Page 63 (3) Assemble the cover sensor arm L into the front cover. Cover sensor arm L Front cover Fig. 3.2-21 Installing the Front Side Cover, Panel Cover and Front Cover (3) III- 38...
  • Page 64 (4) Put the front cover onto the machine and lock the two hooks of the front cover onto the cutter unit ASSY. (5) Secure the front cover by tightening the two screws (taptite, bind B M3x8) from the bottom of the machine. Screw Screw Under cover...

  • Page 65: 5 ] Installing The Upper Cover Assy

    [ 5 ] Installing the Upper Cover ASSY (1) Insert the tape sensor PCB ASSY into the insert guide. Note 1: Insert the tape sensor PCB ASSY until it hits the rib of the insert guide. Note 2: Confirm that you can see the tape sensor PCB ASSY from the hole of the insert guide.
  • Page 66 (3) Tighten the upper cover ASSY with the two screws and the three screws. Note 1: The screws (A) are screw, bind B M2.6x4. Other screws are taptite, bind B M2.6x8. Note 2: When assembling the upper cover ASSY, be sure not to catch the head cable and flat cable.

  • Page 67: 6 ] Installing The Power Supply And Main Pcb

    [ 6 ] Installing the Power Supply and Main PCB (1) Turn the machine upside down. (2) Connect the power supply PCB and DC8V power PCB with the pin, and connect the connector from the main PCB with the power supply PCB. Note: Be careful not to break the pin between the power supply PCB and DC8V power PCB.
  • Page 68 (5) Assemble the power supply PCB and DC8V power PCB ASSY onto the under cover with the three screws. Screws Power supply PCB Screw DC8V power supply PCB ASSY Inlet Fig. 3.2-28 Installing the Power Supply and Main PCB (3) (6) Assemble the fan into the under cover.
  • Page 69 (7) Assemble the main PCB, ground spring plate and FG harness ASSY with the three screws. (8) Connect the nine connectors and flat cable with the main PCB as shown in the figure. Important: When replacing the main PCB, implement each operation described in “APPENDIX 1.
  • Page 70 (9) Assemble the lower plate onto the machine with the four screws. Screws Lower plate Screw Screw Fig. 3.2-31 Installing the Power Supply and Main PCB (6) III- 45...

  • Page 71: 7 ] Reassembling The Top Cover Assy

    [ 7 ] Reassembling the Top Cover ASSY (1) Put the end of the platen into the hole on the right hand side of the top cover. Top cover Platen ASSY Fig. 3.2-32 Reassembling the Top Cover ASSY (1) (2) Put the other end of the platen into the hole on the left hand side. Platen ASSY Top cover Platen ASSY...
  • Page 72 (3) Put the platen shaft bearing and platen gear in this order into the shaft on the right hand side of the platen ASSY and secure them with the retaining ring. (4) Put the platen shaft bearing into the shaft on the left hand side and secure it with the retaining ring.

  • Page 73: 8 ] Installing The Top Cover Assy And Thermal Tape

    [ 8 ] Installing the Top Cover ASSY and Thermal Tape (1) Put the top cover ASSY into the slit on the under cover. Note: Confirm that the top cover ASSY is opened and closed smoothly. (2) Insert the two top cover shafts from the inside of the hooks on the top cover until they hit the end of the hooks.
  • Page 74 (4) Assemble the thermal tape onto the machine. (5) Close the top cover ASSY. Thermal tape Top cover ASSY Fig. 3.2-38 Installing the Top Cover ASSY and Thermal Tape (3) III- 49...

  • Page 75: 9 ] Demonstration Print And Final Check

    [ 9 ] Demonstration Print and Final Check (1) Insert the AC cord into a outlet. (2) After setting a widest label (P102), press the Feed button six times continuously as holding down the power supply button in the power-off condition. Release the power supply button to make a full-width gray printing to 100mm length, and repeat printing.

  • Page 76: Precautions

    CHAPTER IV TROUBLESHOOTING AND ERROR MESSAGE This section gives the service personnel some of the troubleshooting procedures to be followed if an error or malfunction occurs with this machine. It is impossible to anticipate all of the possible troubles which may occur in future and determine the troubleshooting procedures, so this chapter covers some sample troubles.

  • Page 77: Error Message

    ERROR MESSAGE A list of the error messages that are indicated while the service person tool is being used is shown below. Check Item Error Error Messages Advices (0) Write default Communication Cannot transmit. Check the power supply EEPROM data error and the USB connector.

  • Page 78: Troubleshooting Flows

    TROUBLESHOOTING FLOWS [ 1 ] Printing is performed with specific dots omitted. Printing is performed with specific dots omitted. The thermal head and the platen are dirty. Are the thermal head Clean the thermal head and and the platen dirty? the platen.

  • Page 79: 2 ] The Tape Is Not Detected Correctly

    [ 2 ] The tape is not detected correctly. Do not recognize a tape type correctly. Is a tape loaded correctly? Load a tape correctly. Install the main Is the main PCB ASSY PCB ASSY correctly. installed correctly? The sensor is defective. Replace the main PCB Is input signal normal? ASSY.

  • Page 80: 3 ] Led Does Not Turn On

    [ 3 ] LED does not turn on. LED does not turn on. Or LED turns on temporarily. Is the cable of SB PCB Correct the connection. connected correctly? Are any of the Replace the SB PCB. lines in the cable broken? Is the panel cover Re-assemble the cover correctly.

  • Page 81: 4 ] No Printing Is Performed

    [ 4 ] No printing is performed. Tape feed is normal but cannot print. Is the print head cable connected correctly? Correct the connection. Is the head cable of the correct color connected? Any devices on the main PCB are Is the signal for defective or soldering is defective.

  • Page 82: 5 ] The Usb Interface Malfunction

    [ 5 ] The USB interface malfunction. The interface malfunction. Is the USB cable Correct the connection. connected correctly? Are the printer driver Re-install the driver and editor and P-touch editor installed correctly. onto the PC correctly? Is the USB mode Set to the USB mode.

  • Page 83: 6 ] The Rs232C Interface Malfunction

    [ 6 ] The RS232C interface malfunction. The interface malfunction. Is the RS232C cable Correct the connection. connected correctly? Is the interlink cable Use the interlink cable. (cross) used? Are the printer driver Re-install the driver and editor and P-touch editor installed correctly.

  • Page 84: 7 ] The Tape Is Not Cut

    [ 7 ] The tape is not cut. The tape is not cut. Is the cutter Assemble the cutter unit unit assembled correctly? or harness correctly. Is the harness assembled correctly? Press the Power, Cut or Are there any Feed button to reverse jammed tape or the like the cutter.

  • Page 85: 8 ] The Tape Is Not Fed Correctly

    [ 8 ] The tape is not fed correctly. The tape feed is not correctly. Try to print after replace a new tape cassette. Repair completed. The old tape cassette Is tape feed normal? is defective. Clean the platen. Is paper dust on the platen? Attach the Is the head pressure Is the head spring...

  • Page 86: 9 ] The Tape Is Fed, But The Error Message Appears Shortly

    [ 9 ] The tape is fed, but the error message appears shortly. The tape is fed, but the error message appears shortly. Is the VR adjustment performed correctly? Correct the adjustment. * Refer to "APPENDIX 1. MAINTENANCE SOFTWARE OPERATION". Is the flat cable of the Repalace the tape sensor tape sensor ASSY damaged?

  • Page 87: Appendix 1 Maintenance Software Operation

    APPENDIX 1. MAINTENANCE SOFTWARE OPERATION This software has the feature to adjust and examine every component mounted on a mechanical component or the main PCB ASSY when it is replaced, and the capability to write the information such as the model name and serial number into the EEPROM mounted on the main PCB ASSY.

  • Page 88: Appendix 1.2 Setting And Use Procedures Of The Maintenance Software Tool (Ql1050Tstse.exe)

    APPENDIX 1.2 Setting and Use Procedures of the Maintenance Software Tool (QL1050tstSE.exe) < Setting procedure of maintenance software > Connect the machine to your PC with the USB cable and turn the power supply button ON. Start the maintenance software. (File name: QL1050tstSE.exe). Fig.
  • Page 89 Enter the last nine digits of the serial number into the “Serial No.” field, which is found on the nameplate attached on the under cover. Example: Enter the last nine digits ‘D5G111111’ if the serial number on the nameplate is printed as ‘U61346-D5G111111.’ Then, open the “General Settings”...
  • Page 90 “General Settings” Set various items before the inspection. (5-2) (5-1) (5-3) Fig. 4 (5-1) “RS test port” Select the serial port to be used in the RS test. (5-2) “Print pattern” Specify a file for each print pattern. - Setting of print pattern files In accordance with the table below, specify a file for each print pattern of the “Print pattern”...
  • Page 91 <Use procedure of maintenance software> Start up this software. Connect the machine to your PC with the USB cable and turn the power supply button ON. Enter the serial number from the keyboard. “Write default EEPROM data” Reset the setting value of the EEPROM to the factory default value. 1.
  • Page 92 “Tape sensor check” Click the “Tape sensor check” button. Fig. 6...
  • Page 93 Execute the examination in accordance with the following procedure. 1. Set only the backing paper (release paper) of a 62mm x 100mm roll into the machine. (Be sure to remove the label.) Make sure to set the backing paper so that the printed section (black sensor mark) on the paper is aligned with the tray base.
  • Page 94 “Switch sensor check” Check that the cover open sensor and media sensor work correctly. 1. Click the “Media&cover sensors check” button. Fig. 9...
  • Page 95 2. Press the cover sensor arms R and L. 3. Check that the last word of the message in the “Results” column is switched into “on” or “off”. 4. Press the media sensor. 5. Check that the last word of the message in the “Results” column is switched into “on”...
  • Page 96 7. If the check result is OK, click the “Quit sensors check” button. If NG, click the “Sensors test NG” button. Fig. 11...
  • Page 97 “Fan check” 1. Click the “Fan check” button. Fig. 12...
  • Page 98 2. The “Fan check” window appears. 3. Click the “Fan ON” button so that the fan provided in the back of the machine is turned around. 4. Confirm the fan turning and click the “Fan OFF” button. Then, the fan is stopped. Fig.
  • Page 99 “Cut test” Check that the tape is fed and cut correctly. 1. Set the free length roll into the machine. 2. Click the “Cut test” button. Fig. 15...
  • Page 100 3. Press the Feed button on the machine. If OK, the “feed test OK” message appears in the “Results” column. Feed button Fig. 16...
  • Page 101 4. Press the Cut button on the machine. If OK, the “feed and cut test OK” message appears in the “Results” column. Cut button Fig. 17...
  • Page 102 5. Click the “Quit cut test” button to finish the cut test mode. Fig. 18...
  • Page 103 “Temperature check” Check that the head temperature sensor works properly. 1. Click the “Temperature check” button. Fig. 19...
  • Page 104 (10) “Adjustment print test” Implement the printing test to adjust the head rank and top and bottom margins. 1. Click the “Adjustment print test” button. Fig. 20...
  • Page 105 2. The “Adjustment print test” window appears. 3. Set the free length roll of 102mm into the machine and click the “Print test(continuous) (A)” button. 4. Measure the top margin of the print result. Set the value in the “Adjust value” column so that the top margin is 3mm±0.25mm and click the “Apply (0)”...
  • Page 106 6. Set the die cut roll of 62mm x 100mm into the machine and click the “Print test(62mm 2Labels) (B)” button. (Two pages are printed. 1st page: blank, 2nd page: print pattern for inspection) 7. Measure the top margin of the second page of the print result. Set the value in the “Adjust value”...
  • Page 107 9. Set the die cut roll of 62mm x 100mm into the machine and click the “Print test(62mm 1Label) (C)” button. 10. Measure the top margin of the print result. Set the value in the “Adjust value” column so that the top margin is 3mm±0.25mm and click the “Apply (2)” button. 11.
  • Page 108 (11) “Write serial number” Write the USB serial number into the EEPROM. 1. Click the “Write serial number” button. 2. When the message appears in the “Results” column, click the “Finish checking and exit” button to finish the software. Fig. 24...

  • Page 109: Appendix 1.3 Use Procedure Of The Vr Adjustment Tool (Ql1050Tstvradjust.exe)

    APPENDIX 1.3 Use Procedure of the VR Adjustment Tool (QL1050tstVRAdjust.exe) Always implement this adjustment if the main PCB ASSY or tape sensor PCB ASSY is replaced, or if the result of the tape sensor inspection in the maintenance software tool (QL1050tstSE.exe) is NG.
  • Page 110 Insert the VR spacer into the tape sensor PCB ASSY while aligning the spacer with the wall of the tape sensor PCB ASSY as shown in Fig. 27. Note: Insert the VR spacer until it hits the head ASSY slightly. If inserting the spacer more, the head ASSY may be damaged.
  • Page 111 Set only the backing paper (release paper) of a 62mm x 100mm roll into the machine in the status of the VR spacer assembled as shown in Fig. 29. (Be sure to remove the label.) Make sure to set the backing paper so that the printed section (black sensor mark) on the paper is aligned with the tray base.
  • Page 112 Remove the volume cover label from the upper cover ASSY. (10) Turn the VR adjustment volume provided in the machine with using a screwdriver so that the value indicated in the “Results” column is in the range of 218 to 222. (Make sure that a screwdriver is put into the slit on the volume and turn it slowly.
  • Page 113 (11) After adjustment, attach a brand-new volume cover label onto the adjustment hole on the upper cover ASSY. Brand-new volume cover label Upper cover ASSY Adjustment hole Fig. 32 (12) Click the “Quit VR adjustment” button. Fig. 33...
  • Page 114 (13) Click the “Exit” button to finish the software. (14) Turn off the power supply button of the machine. This is the end of the adjustment. Note: Be sure not to activate the maintenance software and P-Touch editor at the same time.
  • Page 115 August, 2006 8V7104BE0 Printed in Japan...

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