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Brother P-touch QL-700 Service Manual
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Brother P-touch QL-700 Service Manual

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SERVICE MANUAL
MODEL: QL-700

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Summary of Contents for Brother P-touch QL-700

  • Page 1 P-touch SERVICE MANUAL MODEL: QL-700...
  • Page 2 This publication is a service manual covering the specifications, theory of operation, disassembly/ reassembly procedure, and troubleshooting the Brother QL-700. It is intended for service personnel and other concerned persons to accurately and quickly provide after-sale service for our QL-700.

  • Page 3: Table Of Contents

    CONTENTS CHAPTER I SPECIFICATIONS..........I-1 1.1 MECHANICAL SPECIFICATIONS..................I-1 1.1.1 External Appearance ......................I-1 1.1.2 Control Button and LED .....................I-1 1.1.3 Display..........................I-2 1.1.4 Printing Mechanism......................I-2 1.1.5 Thermal Tape........................I-3 1.1.6 Cutter ...........................I-4 1.1.7 PC Interface .........................I-4 1.2 ELECTRONICS SPECIFICATIONS ..................I-4 1.2.1 Character Generator......................I-4 1.2.2 Power Supply........................I-4 CHAPTER II THEORY OF OPERATION......
  • Page 4 Disassembling the Upper Cover and the Under Cover ..........III-16 Removing the Mecha ASSY ..................III-19 Removing the Cutter Unit ASSY ................. III-20 Disassembling the Mecha ASSY.................. III-21 3.5 REASSEMBLING PROCEDURE..................III-26 Reassembling the Mecha ASSY................... III-26 Installing the Cutter Unit ASSY................... III-32 Reassembling the Panel Cover ..................
  • Page 5 1.4.1 Read serial no ........................1-7 1.4.2 Sensor white level check ....................1-9 1.4.3 Sensor black level check ....................1-11 1.4.4 Temperature and EL button check ................... 1-13 1.4.5 Media and cover sensors check ..................1-14 1.4.6 Cut test..........................1-16 1.4.7 Adjustment print test (Continuous) ..................

  • Page 6: Chapter Ispecifications

    CHAPTER I SPECIFICATIONS 1.1 MECHANICAL SPECIFICATIONS 1.1.1 External Appearance (1) Dimensions (W x D x H) 128mm x 221mm x 153mm (2) Weight Approx. 1.12kg (Machine proper only) Approx. 2.10kg (In package) 153mm 128mm 221mm Fig. 1.1-1 External Appearance 1.1.2 Control Button and LED (1) Number of buttons 4 (ON/OFF, Editor Lite, Feed, Cut)

  • Page 7: Display

    1.1.3 Display (1) Display type (Editor Lite lamp; green Status lamp; green, orange, red) 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 Max.

  • Page 8: Thermal Tape

    1.1.5 Thermal Tape (1) Tape Roll type (Die cut and free length) (2) Type and size of die cut tape Label size Roll overall Number of label Type of tape (W x H) width sheets Standard Address 29mm x 90mm 32mm 400 sheets/roll Large Address...

  • Page 9: Cutter

    Windows; Microsoft Windows XP/Windows Vista/Windows7 Macintosh; Mac OS X 10.4.11-10.6 (only with P-touch Editor 5.x) (3) Printer emulation PT CBP (Brother original) (4) Accessories Editor Dedicated editor is included. USB IF cable Standard USB cable is included. 1.2 ELECTRONICS SPECIFICATIONS 1.2.1...

  • Page 10: Chapter Ii Theory Of Operation

    CHAPTER II THEORY OF OPERATION 2.1 OUTLINE OF MECHANISMS 2.1.1 Print Mechanism  Structure of Thermal Head This machine adopts direct thermal printing system. The thermal head consists of 720 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 11: 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 on the platen ASSY by the force of head spring L. When open the top cover ASSY, the release gear and release shaft are turned via link lever and platen release lever and the release shaft presses down the head ASSY.

  • Page 12: Tape Feed Mechanism

    2.1.3 Tape Feed Mechanism When the tape is set, the tape is pressed against the thermal head, which is nipped between the platen and the thermal head. At this time the tape feed motor ASSY (step motor) rotates, and its drive power is transmitted to the platen gear and the platen via the gear train, and consequently the platen can feed the tape.

  • Page 13: 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 14: Cover Open (Cover Lock) Sensor (Push Switch

    2.1.5 Cover Open (Cover Lock) Sensor (Push Switch) The cover open (cover lock) sensor (push switch) is mounted on the SB PCB ASSY. Closing the top cover ASSY , the cover sensor arm pushes the cover open (cover lock) sensor (push switch) and the signal of the top cover ASSY close status is output. Top cover ASSY Cover sensor arm SB PCB ASSY...

  • Page 15: Outline Of Control Electronics

    2.2 OUTLINE OF CONTROL ELECTRONICS Fig. 2.2-1 shows the block diagram of the control electronics. The control electronics consist of the following components. CN11 Cutter sensor Full cutter motor SB PCB ASSY Tape feed motor CN10 Power supply ASSY Thermal head Media type detect switch PCB Media position detect sensor PCB...

  • Page 16: Cutter Sensor (Cutter Home Position Detect Sensor

    2.2.5 Cutter Sensor (Cutter Home Position Detect Sensor) This sensor detects existence of the cutter at its home position (micro switch). 2.2.6 Media Feed Motor (Tape Feed Motor ASSY) The media feed motor supplies the drive power to feed media. This motor is step motor with 35 diameter, and drive voltage is 25V.

  • Page 17: Main Pcb

    2.3 MAIN PCB Fig. 2.3-1 shows the block diagram of the main PCB. The main PCB consists of the following components. (1) CPU (Including ROM and RAM) (2) EEPROM (4Kbit) (3) Power supply ON/OFF circuit, Feed button ON/OFF circuit, Cut button ON/OFF circuit, LED ON/OFF circuit (4) Head power supply ON/OFF circuit (5) Full cutter motor driver circuit and Media feed motor driver circuit...
  • Page 18 2.3.1 Media Type Detect Sensor Circuit, Media Position Detect Sensor Circuit and Cover Open Sensor Circuit (1) Media type detect sensor circuit The sensor circuit consists of media sensor with five switch systems (CAS1 through CAS5). Loading a tape cassette, some of five switches turn on and the others retain off according to the configuration of its' ID code apertures.

  • Page 19: Chapter Iii Disassembly And Reassembly

    CHAPTER III DISASSEMBLY AND REASSEMBLY 3.1 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 20: Tightning Torque Lists

    3.2 TIGHTNING TORQUE LISTS Tightening torque Location Screw type Q'ty N · cm Top cover ASSY Taptite, bind B M2.6x8 0.343 ± 0.049 Lower plate ASSY Taptite, bind B M2.6x8 0.343 ± 0.049 Power supply ASSY Taptite, bind B M2.6x8 0.343 ±...

  • Page 21: Lubrication Points List

    3.3 LUBRICATION POINTS LIST * Grease to be used: Grease B (rice-grain sized) Release shaft * Grease to be used: Grease B (rice-grain sized) * Grease to be used: Grease B (rice-grain sized) Head ASSY Mecha ASSY III - 3...
  • Page 22 Platen gear * Grease to be used: Silicon grease G501 (rice-grain sized) Double gear C III - 4...

  • Page 23: Disassembly Procedure

    3.4 DISASSEMBLY PROCEDURE Removing the Thermal Tape and the Top Cover ASSY NOTE: Turn on the ON/OFF button with the top cover ASSY closed, and initialize the machine before disassembly. (1) Turn off the ON/OFF button and disconnect the AC cord. AC cord ON/OFF button Fig.
  • Page 24 (4) Push the ribs of the upper cover inward, and remove the two bosses of the top cover ASSY. Top cover ASSY Bosses Top cover ASSY Ribs Upper cover Upper cover Fig. 3.4-3 Removing the Thermal Tape and the Top Cover ASSY (3) (5) Turn the top cover ASSY, and align the tab of the boss with the groove of the link lever, and then remove the link lever from the top cover ASSY.
  • Page 25 (6) Remove the two screws from the top cover ASSY. Screws Top cover ASSY Fig. 3.4-5 Removing the Thermal Tape and the Top Cover ASSY (5) III - 7...

  • Page 26: Removing The Power Supply Assy And The Main Pcb Assy

    Removing the Power Supply ASSY and the Main PCB ASSY (1) Turn the machine upside down. (2) Remove the four screws, and then remove the lower plate ASSY from the under cover. Screws Screws Lower plate ASSY Under cover Fig. 3.4-6 Removing the Power Supply ASSY and the Main PCB ASSY (1) (3) Remove the two screws, and then remove the power supply ASSY from the under cover.
  • Page 27 (4) Disconnect the main PCB harness from the power supply ASSY. (5) Disconnect the power8 harness ASSY from the main PCB ASSY. Power supply ASSY Power8 harness ASSY Main PCB harness Main PCB ASSY Fig. 3.4-8 Removing the Power Supply ASSY and the Main PCB ASSY (3) (6) Disconnect the power8 harness ASSY from the power supply ASSY.
  • Page 28 (7) Disconnect the five connectors (CN1, CN2, CN3, CN6, CN7) and two flat cables (CN4, CN10) from the main PCB ASSY. CN10 Main PCB ASSY Fig. 3.4-10 Removing the Power Supply ASSY and the Main PCB ASSY (5) (8) Remove the four screws, and then remove the ground spring plate, the FG harness ASSY and the main PCB ASSY from the under cover.
  • Page 29 (9) Remove the insulating sheet S from the under cover. Insulating sheet S Under cover Fig. 3.4-12 Removing the Power Supply ASSY and the Main PCB ASSY (7) III - 11...

  • Page 30: Removing The Sub Assy Inlet

    Removing the Sub ASSY Inlet (1) Unsolder the solder of the sub ASSY inlet harness from the power supply ASSY. Sub ASSY inlet harness Sub ASSY inlet harness Power supply ASSY Fig. 3.4-13 Removing the Sub ASSY Inlet (1) (2) Release the hooks on both sides of the sub ASSY inlet and pull the inlet to the direction of the arrow as shown in the figure below to remove it from the under cover.

  • Page 31: Removing The Media Pcb Assy

    Removing the Media PCB ASSY (1) Remove the two screws, and then remove the media PCB ASSY from the under cover. Screws Media PCB ASSY Under cover Fig. 3.4-15 Removing the Media PCB ASSY III - 13...

  • Page 32: Removing The Panel Cover

    Removing the Panel Cover (1) Turn the machine upside down. (2) Remove the two screws. (3) Pull up the section “A” of the panel cover, and remove the panel cover to the direction of the arrow from the upper cover. Section “A”...
  • Page 33 (6) Remove the power button, the feed button and the LED guide from the panel cover. Feed button Power button LED guide Panel cover Fig. 3.4-18 Removing the Panel Cover (3) (7) Remove the cover sensor arm from the panel cover. Cover sensor arm Panel cover Fig.

  • Page 34: Disassembling The Upper Cover And The Under Cover

    Disassembling the Upper Cover and the Under Cover (1) Remove the two screws A and five screws B from the upper cover. (2) Release the two hooks to disassemble the upper cover and the under cover. NOTE: The screws A are screw, bind M2.6x4. The screws B are taptite, bind B M2.6x8.
  • Page 35 (3) Turn the upper cover upside down, and then pull out the flat cable of the tape sensor PCB ASSY from the rib of the back side of the upper cover. Flat cable of the tape sensor PCB ASSY Upper cover Fig.
  • Page 36 (5) Remove the tape sensor PCB ASSY from the insert guide. Insert guide Tape sensor PCB ASSY Fig. 3.4-23 Disassembling the Upper Cover and the Under Cover (4) III - 18...

  • Page 37: Removing The Mecha Assy

    Removing the Mecha ASSY (1) Remove the two screws from the mecha ASSY. (2) Turn the mecha ASSY to the direction of the arrow to release the two tabs of the mecha ASSY from the under cover, and then remove the mecha ASSY from the under cover.

  • Page 38: Removing The Cutter Unit Assy

    Removing the Cutter Unit ASSY (1) Remove the two screws, and then remove the cutter unit ASSY from the mecha ASSY. Mecha ASSY Cutter unit ASSY Screws Fig. 3.4-25 Removing the Cutter Unit ASSY III - 20...

  • Page 39: Disassembling The Mecha Assy

    Disassembling the Mecha ASSY (1) Release the hook to remove the double gear C from the mecha ASSY. Hook Double gear C Mecha ASSY Fig. 3.4-26 Disassembling the Mecha ASSY (1) (2) Remove the double gear B and the platen gear from the mecha ASSY. Mecha ASSY Double gear B Platen gear...
  • Page 40 (3) Remove the screw, and then remove the platen shaft bushing (right side). Platen ASSY Screw Platen shaft bushing (Right side) Mecha ASSY Fig. 3.4-28 Disassembling the Mecha ASSY (3) (4) Remove the platen ASSY from the mecha ASSY. (5) Remove the screw, and then remove the platen shaft bushing (left side). Platen shaft bushing (Left side) Screw...
  • Page 41 (6) Remove the head hold spring from the mecha ASSY. Head hold spring Mecha ASSY Fig. 3.4-30 Disassembling the Mecha ASSY (5) III - 23...
  • Page 42 (7) Remove the head ASSY from the mecha ASSY. CAUTION: Pay attention not to give strong impact on the heating element of a head ASSY when removing the head ASSY. Head ASSY Head ASSY Mecha ASSY Heating element Fig. 3.4-31 Disassembling the Mecha ASSY (6) (8) Remove the two head springs L from the mecha ASSY.
  • Page 43 (9) Remove the retaining ring E2.5 and remove the double gear A from the mecha ASSY. Mecha ASSY Double gear A Retaining ring E2.5 Fig. 3.4-33 Disassembling the Mecha ASSY (8) (10) Remove the two screws, and then remove the tape feed motor ASSY and the FG harness ASSY from the mecha ASSY.

  • Page 44: Reassembling Procedure

    3.5 REASSEMBLING PROCEDURE Reassembling the Mecha ASSY (1) Assemble the tape feed motor ASSY and the FG harness ASSY onto the mecha ASSY with the two screws. NOTE: Pay attention to the direction of the tape feed motor ASSY. Mecha ASSY Tape feed motor ASSY Screws FG harness ASSY...
  • Page 45 (3) Assemble the two head springs L onto the bosses of the mecha ASSY. Head springs L Mecha ASSY Bosses Fig. 3.5-3 Reassembling the Mecha ASSY (3) III - 27...
  • Page 46 (4) Set the two head springs L on the bosses of the back side of the head ASSY, and assemble the head ASSY onto the mecha ASSY as shown in the figure. NOTE 1: Confirm that the head ASSY moves smoothly. NOTE 2: Confirm that the head springs L are properly inserted into the upper and lower bosses.
  • Page 47 (5) Assemble the head hold spring onto the mecha ASSY as shown in the figure. NOTE: Be careful not to cut your fingers. Head hold spring Mecha ASSY Fig. 3.5-5 Reassembling the Mecha ASSY (5) III - 29...
  • Page 48 (6) Assemble the platen shaft bushing (left side) onto the mecha ASSY with the screw. (7) Assemble the platen ASSY onto the mecha ASSY. Platen shaft bushing (Left side) Screw Platen ASSY Mecha ASSY Fig. 3.5-6 Reassembling the Mecha ASSY (6) (8) Assemble the platen shaft bushing (right side) onto the mecha ASSY with the screw.
  • Page 49 (9) Assemble the platen gear, the double gear B, and the double gear C onto the mecha ASSY in this order. NOTE 1: Confirm that the hook of the double gear C is securely hooked on. NOTE 2: Confirm that each gear moves smoothly. Mecha ASSY Double gear B Platen gear...

  • Page 50: Installing The Cutter Unit Assy

    Installing the Cutter Unit ASSY (1) Assemble the cutter unit ASSY onto the mecha ASSY with the two screws. Mecha ASSY Cutter unit ASSY Screws Fig. 3.5-9 Installing the Cutter Unit ASSY III - 32...

  • Page 51: Reassembling The Panel Cover

    Reassembling the Panel Cover (1) Assemble the shaft unit of the cover sensor arm onto the section “A” of the panel cover. Cover sensor arm Panel cover Shaft unit Section “A” Fig. 3.5-10 Reassembling the Panel Cover (1) (2) Assemble the LED guide, the feed button and the power button onto the panel cover.
  • Page 52 (3) Assemble the SB PCB ASSY onto the panel cover with the two screws. NOTE: Confirm that the cover sensor arm moves smoothly. (4) Route the harness of the SB PCB ASSY as shown in the figure. Panel cover Screws Harness of the SB PCB ASSY SB PCB ASSY...

  • Page 53: Installing The Mecha Assy

    Installing the Mecha ASSY (1) Pass the harness of the cutter motor and the harness of the cutter sensor through the hole A of the under cover. (2) Set the two hooks A of the mecha ASSY to the grooves on the under cover. (3) Fit the hole B of the mecha ASSY into the boss on the under cover, and fit the two ribs of the mecha ASSY into the holes C on the under cover.
  • Page 54 (5) Turn the machine upside down, and then pass the harness of the mecha ASSY through the four holes of the under cover respectively as shown in the figure. Hole Front Harness of the mecha Harness of the mecha ASSY Hole Mecha ASSY Hook...

  • Page 55: Reassembling The Upper Cover And The Under Cover

    Reassembling the Upper Cover and the Under Cover (1) Insert the tape sensor PCB ASSY into the insert guide. NOTE 1: Insert the tape sensor PCB ASSY until it hits the groove of the insert guide. NOTE 2: Confirm that you can see the tape sensor PCB ASSY from the hold of the insert guide.
  • Page 56 (2) Pass the flat cable of the tape sensor PCB ASSY into the hole on the upper cover. (3) Assemble the insert guide onto the upper cover with the two screws. Flat cable of the tape sensor PCB ASSY Screws Insert guide Hole Upper cover...
  • Page 57 (5) Move the platen release lever and the link lever to the position as shown in the figure. (The head is in a pressure bonding state.) Mecha ASSY Platen release lever Link lever Fig. 3.5-19 Reassembling the Upper Cover and the Under Cover (4) (6) Pass the flat cable of the tape sensor PCB ASSY through the hole on the under cover.
  • Page 58 (7) Pass the link lever through the hole of the upper cover, and then hang the hooks on the under cover to assemble the upper cover onto the under cover. (8) Secure the upper cover with the two screws A and the five screws B. NOTE: The screws A are screw, bind M2.6x4.

  • Page 59: Installing The Panel Cover

    Installing the Panel Cover (1) Fit the two hooks A of the panel cover into the holes of the upper cover, and then hang the hooks B on the ribs of the upper cover. (2) Secure the panel cover with the two screws. NOTE: Confirm that the harnesses are not pinched.

  • Page 60: Installing The Media Pcb Assy

    Installing the Media PCB ASSY (1) Turn the machine upside down. (2) Assemble the media PCB ASSY onto the under cover with the two screws. Screws Media PCB ASSY Under cover Fig. 3.5-23 Installing the Media PCB ASSY III - 42...

  • Page 61: Reassembling The Sub Assy Inlet

    Reassembling the Sub ASSY Inlet (1) Pass the harnesses of the sub ASSY inlet through the hole on the under cover. (2) Insert the sub ASSY inlet into the hole of the under cover and put it until its hooks are properly hooked.
  • Page 62 (4) Route the harness of the sub ASSY inlet and the harness of the media PCB ASSY as shown in the figure. Front Under cover Hook To power supply ASSY Hook Hook Hook Media PCB ASSY Hook Sub ASSY inlet Fig.

  • Page 63: Installing The Main Pcb Assy And The Power Supply Assy

    Installing the Main PCB ASSY and the Power supply ASSY (1) Attach the insulating sheet S into the boss of the under cover as shown in the figure below. Insulating sheet S Boss Under cover Fig. 3.5-27 Installing the Main PCB ASSY and the Power supply ASSY (1) (2) Assemble the ground spring plate, the FG harness ASSY and the main PCB ASSY onto the under cover with the four screws.
  • Page 64 (3) Connect the power8 harness ASSY onto the power supply ASSY. Power8 harness ASSY Power supply ASSY Fig. 3.5-29 Installing the Main PCB ASSY and the Power supply ASSY (3) (4) Connect the power8 harness ASSY onto the main PCB ASSY. (5) Connect the main PCB harness onto the power supply ASSY.
  • Page 65 (6) Assemble the power supply ASSY onto the under cover with the two screws. NOTE: Confirm that the harness of the sub ASSY inlet is not pinched. Screws Power supply ASSY Main PCB harness Harness of the sub ASSY inlet Under cover Slit Power8 harness ASSY...
  • Page 66 (8) Route the harnesses of the CN6 as shown in the figure. Harness of the tape feed motor ASSY Slit Main PCB ASSY Fig. 3.5-33 Installing the Main PCB ASSY and the Power supply ASSY (7) NOTE: Make sure that the harnesses and the flat cables are routed as shown below.
  • Page 67 (9) Assemble the lower plate ASSY onto the under cover with the four screws. Screws Screws Lower plate ASSY Under cover Fig. 3.5-35 Installing the Main PCB ASSY and the Power supply ASSY (8) III - 49...

  • Page 68: Installing The Top Cover Assy And The Thermal Tape

    [10] Installing the Top Cover ASSY and the Thermal Tape (1) Secure the top cover ASSY with the two screws. Screws Top cover ASSY Fig. 3.5-36 Installing the Top Cover ASSY and the Thermal Tape (1) (2) Assemble the link lever onto the top cover ASSY. Top cover ASSY Link lever Fig.
  • Page 69 (3) Fit one of the two bosses of the top cover ASSY into the corresponding rib hole of the upper cover, and then fit the other boss into the rib hole by bending the rib. Top cover ASSY Bosses Top cover ASSY Ribs Upper cover...
  • Page 70 (4) Assemble the thermal tape onto the machine. (5) Close the top cover ASSY. Thermal tape Top cover ASSY Fig. 3.5-39 Installing the Top Cover ASSY and the Thermal Tape (4) III - 52...

  • Page 71: Demonstration Print And Final Check

    [11] Demonstration Print and Final Check (1) Insert the AC cord into a outlet. (2) Set the tape with the maximum width (62mm), and press the Feed button six times in a row with pressing the ON/OFF button when the power is OFF. Then, leave your fingers from the both buttons, and 100mm full-width gray print is performed.

  • Page 72: Chapter Iv Troubleshooting And Error Message

    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 difficult 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 73: Status Led Control In Different Situations And Measure Against Errors

    4.3 STATUS LED CONTROL IN DIFFERENT SITUATIONS AND MEASURE AGAINST ERRORS The display priority is specified as follows. - Green LED ON: Normal operation - Orange LED ON: Cover open - Orange LED blinking by 1 sec frequency: In a cooling state - Red LED blinking by 2 sec frequency: Error.
  • Page 74 Status LED State Blinking (0.6-sec cycle) Error - System error (EEP ROM error) LED ON for 0.3 for 0.3 Blinking (1.8-sec cycle) Cutter error Cutter reverse mode LED OFF for 0.9 sec for 0.3 for 0.3 for 0.3 Red LED ON Boot mode IV - 3...

  • Page 75: Error Message

    No paper Install a new roll of labels or tape into the Brother QL, and then click [Resume] in the print monitor. Buffer full error in Brother QL. Turn the Brother QL off and then on. Click [Resume] in the Brother QL monitor screen.
  • Page 76 Cooling. Please wait a while. The Brother QL is cooling down the print head. Wait a while. The Brother QL is being used. The Brother QL is being used. After waiting a short while, click [Resume] in the Brother QL monitor.
  • Page 77 A list of the error messages that are indicated while the service person tool is being used is shown below. Check Items Errors Error Messages Advices Through all Communication Can not connect. Check the power supply and the contents error USB connector.

  • Page 78: Troubleshooting Flows

    4.5 TROUBLESHOOTING FLOWS Printing is performed with specific dots omitted. Printing is performed with specific dots omitted. The thermal head and the Are the thermal head platen are dirty. and the platen dirty? Clean the thermal head and the platen. Is the platen rubber Replace the platen ASSY.

  • Page 79: The Tape Is Not Detected Correctly

    The tape is not detected correctly. Do not recognize a tape type correctly. Is a tape loaded correctly? Load a tape correctly. Is the media type Install the sensor correctly. detect sensor installed correctly? Is the sensor harness Replace the media PCB ASSY. damaged? The sensor is defective.

  • Page 80: Led Does Not Turn On

    LED does not turn on. * The ON/OFF button supports the Status LED. LED does not turn on. The Editor Lite button supports the Editor Lite LED. Is the cable of the SB PCB Correct the connection. connected correctly? Are any of the Replace the SB PCB ASSY.

  • Page 81: No Printing Is Performed

    No printing is performed. Tape feed is normal but cannot print. Is the print head cable Correct the connection. connected correctly? Is the thermal head Replace the thermal head ASSY. appearance normal? If replace the main PCB Replace the main PCB ASSY. ASSY, is it OK? Replace the power supply ASSY.

  • Page 82: The Tape Is Not Cut

    The tape is not cut. The tape is not cut. Are the foreign objects Replace the cutter unit ASSY. on the blades? Does the cutter Replace the cutter unit ASSY. motor rotate? Is the motor harness Replace the cutter unit ASSY. damaged? Is the connecter connected Correct the connection.

  • Page 83: The Tape Is Not Feed Correctly

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

  • Page 84: Appendix 1 Serviceman Software Tool

    APPENDIX 1 SERVICEMAN SOFTWARE TOOL (Version 1.00) Role and Operating procedure of the VR Adjustment Tool 1.1.1 Role of the VR Adjustment Tool This tool is a part of the Serviceman Software Tool, and serves to perform the VR adjustment. If replacing the PCB, be sure to perform this adjustment. 1.1.2 Operating procedure of the VR Adjustment Tool Select the VR Adjustment Tool (QL700tstVRAdjust.exe), and start it.
  • Page 85 Open the top cover ASSY and set the release coated paper of the die-cut tape (62 x 100mm) to the sensor part so that the logo print surface of “brother” is the upper side, and close the top cover ASSY.

  • Page 86: Setting And Operating Procedure Of The Serviceman Software Tool

    1.2 Setting and Operating procedure of the Serviceman Software Tool 1.2.1 Role of the Serviceman Software Tool This tool serves to check the operation of each function, and writes the setting value or the serial number into the machine. After repair, be sure to use this tool to implement the required inspection items.

  • Page 87: Operating Procedure Of The Serviceman Software Tool

    1.3 Operating procedure of the Serviceman Software Tool The file name of the Serviceman Software Tool is the “ProductChkTool.exe”. 1.3.1 Starting of the Serviceman Software Tool Select the “ProductChkTool.exe” file to start the Serviceman Software Tool. NOTE: Be sure to store setting files (e.g. “*.ini” and “*.prn”) in the same folder as the execution file “ProductChkTool.exe”.
  • Page 88 Click the [Run] button on the main screen with the machine connected to the PC. The selected inspection item (yellow background) is implemented. Refer to “1.4 Inspection Details” about the procedure for implementing each inspection item. Click the [Up] button or the [Down] button to change the selected inspection item. If all required inspection items have been implemented, click the [To next check] button to proceed to the next inspection.

  • Page 89: Inspection Details

    1.4 Inspection Details This section describes the procedure for implementing each inspection item. Perform “Read serial no” first. After this inspection is completed, the following inspections, from “Sensor white level check” to “Write serial number”, become feasible. For items from “Sensor white level check” to “Write serial no”, implement only the required items.

  • Page 90: Read Serial No

    1.4.1 Read serial no Enter the serial number printed on the nameplate of the bottom side of the machine. If the serial number is entered, the EEPROM of the machine is initialized. If the EEPROM is initialized, the serial number is cleared. In this section, the serial number is not written in the machine.
  • Page 91 (4) If the input serial number fulfills the following conditions, the inspection is OK. And the input numbers are displayed in the “Model code” column and the “Serial number” column on the screen.  “Read serial no” OK Fig. 10 “Read serial no” OK ...

  • Page 92: Sensor White Level Check

    1.4.2 Sensor white level check In this inspection, Serviceman Software Tool checks if the photo sensor detects the white level correctly. (1) Set the release coated paper (62 x 100mm) into the machine as shown in the figure below. Change the background of “Sensor white level check” item into yellow with the [Up] / [Down] buttons or the [ ↑] / [ ↓] keys on the keyboard.
  • Page 93  Acceptable range of white level White level: 210 ≤ Measured value ≤ 235 Fig. 13 “Sensor level check” screen (3) The measured value is displayed in the “Results” column on the main screen if the inspection is finished. <Display example in case of NG> Fig.

  • Page 94: Sensor Black Level Check

    1.4.3 Sensor black level check In this inspection, Serviceman Software Tool checks if the photo sensor detects the black level correctly. (1) Open the top cover ASSY to remove the release coated paper in the machine. At this time, check that the Status LED lights up orange. Check that the LED lights up orange.
  • Page 95  Acceptable range of black level Black level: 0 ≤ Measured value ≤ 60 Fig. 16 “Sensor level check” screen (4) If the inspection is finished (with OK), the measured value is displayed in the “Results” column on the main screen and the next inspection is started automatically.

  • Page 96: Temperature And El Button Check

    1.4.4 Temperature and EL button check In this inspection, Serviceman Software Tool checks that the temperature of the thermal head and motor is within the acceptable range, and check that the [EL] button works correctly. (1) Change the background of “Temperature and EL button check” item into yellow with the [Up] / [Down] buttons or the [ ↑] / [ ↓] keys on the keyboard.

  • Page 97: Media And Cover Sensors Check

    1.4.5 Media and cover sensors check Check that the media sensor and cover sensor work correctly. (1) Change the background of “Media and cover sensors check” item into yellow with the [Up] / [Down] buttons or the [ ↑] / [ ↓] keys on the keyboard. And then click the [Run] button.
  • Page 98 (4) If pushing all media sensors, “MediaSensor 1 to 5” change to “Done” as follows. Push the sensors according to the arrangement sequence of the displayed sensors. If “MediaSensor 1 to 5” change to “Done”, close the top cover to change the “CoverSensor”...

  • Page 99: Cut Test

    1.4.6 Cut test Check that the tape is fed and cut correctly. Set the free length tape (62mm) into the machine and close the top cover ASSY, and then start the inspection. (1) Change the background of “Cut test” item into yellow with the [Up] / [Down] buttons or the [ ↑] / [ ↓] keys on the keyboard.

  • Page 100: Adjustment Print Test (Continuous)

    1.4.7 Adjustment print test (Continuous) In this inspection, Serviceman Software Tool adjusts the top margin for the free length tape. Start the inspection in the state of setting the free length tape (62mm) which used in the cut test. (1) Change the background of “Adjustment print test (Continuous)” item into yellow with the [Up] / [Down] buttons or the [ ↑] / [ ↓] keys on the keyboard.
  • Page 101 • When the top margin is within the specified value; Click the [OK] button to complete the inspection (with OK). NOTE: The operation after “Procedure (4)” is unnecessary. • When the top margin is not within the specified value; Click the [NG] button, and adjust the top margin. NOTE: Perform the operation after “Procedure (4)”.

  • Page 102: Write Serial No

    1.4.8 Write serial no In this inspection, Serviceman Software Tool writes the serial number and the EEPROM version/mode setting at startup (EL mode) into the machine. Make sure to perform this item at the end of the inspection. (1) Change the background of “Write serial no” item into yellow with the [Up] / [Down] buttons or the [ ↑] / [ ↓] keys on the keyboard.

  • Page 103: Appendix

    1.5 APPENDIX 1.5.1 Operation Check of the Editor Lite Inspect until “Write serial no” with the Serviceman Software Tool, and then reboot the machine. Then, the machine starts in the state that the LED of upper [EL] button of the machine is in the lighting. (The factory default is in this state.) Perform the “starting”...
  • Page 104 (3) “P-touch Editor Lite” (Editor) is started. When the media is not set into the machine, set it and select the media in the Editor side. (The free length tape (62mm (2.4")) is set in here.) If click the [Check Media] button, detect the installed media. If the media is different, select the media by the right drop-down arrow.

  • Page 105: Changing Of The Print Pattern

    1.5.2 Changing of the Print Pattern When changing the Tool settings, follow the procedure described below. Currently, only the path of the printing file to be used for “Adjustment print test (Continuous)” can be changed. (Note that changes cannot be saved.) Settings for other items cannot be changed.
  • Page 106 (3) Click the [Print Setting] button. Fig. 37 “Setting” screen (Adjustment print test (Continuous)) (4) Select the print pattern file (*.prn) with the [Browse] button of the “Prn File”. When the path is entered, click the [OK] button to reflect the setting. Click the [Default] button to return the path to the default.
  • Page 107 Sep., 2011 SM-PT041(1) Printed in Japan...

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