Brother QL-700 Service Manual Download Page 15

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II - 6

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.

Fig. 2.2-1 Block Diagram of the Control Electronics

2.2.1

Main PCB ASSY

This manages all the components. This PCB consists of CPU, EEPROM and motor

drivers etc.

2.2.2

Media Type Detect Switch PCB (Media PCB ASSY)

The sensor (mechanical SW) that detects media type and size connected to main

PCB ASSY. A semi-fixed resistance (VR) for adjustment of the media position detect

sensor is mounted on it.

2.2.3

Media Position Detect Sensor PCB (Tape Sensor PCB ASSY)

This sensor detects the printing start position for the die cut label, and checks

existence of the zebra pattern media for the free length label, using the reflection type

photo sensor.

2.2.4

Button, LED PCB (SB PCB ASSY)

This is the PCB equipped with ON/OFF button, Feed button, Cut button, Editor Lite

button, cover open sensor, LED lamp (Green/Red) and Green LED.

CN4

CN9

CN5

CN2

CN3

CN1

CN6

CN7

CN10

CN11

Cutter sensor

Full cutter motor

SB PCB ASSY

Tape feed motor

Media type detect switch PCB

Media position

detect sensor PCB

Thermal head

USB

Power supply ASSY

Summary of Contents for QL-700

Page 1: ...P touch SERVICE MANUAL MODEL QL 700 ...

Page 2: ...n best condition for the customer the service personnel must adequately understand and apply this manual This manual is made up of four chapters and appendices CHAPTER I SPECIFICATIONS CHAPTER II THEORY OF OPERATION CHAPTER III DISASSEMBLY AND REASSEMBLY CHAPTER IV TROUBLESHOOTING AND ERROR MESSAGE APPENDIX 1 SERVICEMAN SOFTWARE TOOL Version 1 00 Copyright Brother 2011 All rights reserved No part ...

Page 3: ... ASSY II 6 2 2 2 Media Type Detect Switch PCB Media PCB ASSY II 6 2 2 3 Media Position Detect Sensor PCB Tape Sensor PCB ASSY II 6 2 2 4 Button LED PCB SB PCB ASSY II 6 2 2 5 Cutter Sensor Cutter Home Position Detect Sensor II 7 2 2 6 Media Feed Motor Tape Feed Motor ASSY II 7 2 2 7 Full Cutter Motor Cutter Motor ASSY II 7 2 2 8 Thermal Head II 7 2 3 MAIN PCB II 8 2 3 1 Media Type Detect Sensor Ci...

Page 4: ... 4 3 STATUS LED CONTROL IN DIFFERENT SITUATIONS AND MEASURE AGAINST ERRORS IV 2 4 4 ERROR MESSAGE IV 4 4 5 TROUBLESHOOTING FLOWS IV 7 1 Printing is performed with specific dots omitted IV 7 2 The tape is not detected correctly IV 8 3 LED does not turn on IV 9 4 No printing is performed IV 10 5 The interface malfunction IV 10 6 The tape is not cut IV 11 7 The tape is not feed correctly IV 12 APPEND...

Page 5: ...eck 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 1 17 1 4 8 Write serial no 1 19 1 5 APPENDIX 1 20 1 5 1 Operation Check of the Editor Lite 1 20 1 5 2 Changing of the Print Pattern 1 22 ...

Page 6: ...t Approx 1 12kg Machine proper only Approx 2 10kg In package Fig 1 1 1 External Appearance 1 1 2 Control Button and LED 1 Number of buttons 4 ON OFF Editor Lite Feed Cut 2 Layout See Fig 1 1 2 Fig 1 1 2 Layout 153mm 128mm 221mm Feed button Cut button Editor Lite lamp Status lamp ON OFF button Four buttons and two LED s Editor Lite button ...

Page 7: ...int 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 93 labels min Standard address labels 3 Print head Type Thick film thermal head 720 dots by one row Resolution 300 dpi ...

Page 8: ...0mm 32mm 100 sheets roll Postage Print only for U S A 32 9mm x 47 62mm 42mm 200 sheets roll Type of tape Roll width Roll overall width Effective length of roll Continuous Length Paper 12 12mm 32mm 30 48m Continuous Length Paper 29 29mm 32mm 30 48m Continuous Length Paper 38 only for EU 38mm 42mm 30 48m Continuous Length Paper 50 only for EU 50mm 54mm 30 48m Continuous Length Paper 62 62mm 66mm 30 ...

Page 9: ...cated editor is included USB IF cable Standard USB cable is included 1 2 ELECTRONICS SPECIFICATIONS 1 2 1 Character Generator Note Character generator feature is not provided for QL 700 1 Demonstration printing Press the Feed button once while pressing and holding the ON OFF button when power is off and then release the ON OFF button Demonstration printing will be started Fig 1 2 1 Demonstration P...

Page 10: ...ce comes from a nip between the cylindrical rubber platen and the thermal head At this timing voltage is applied selectively to 720 pieces of heating elements arrayed on the thermal head By this voltage application the heating elements generate heat and the thermal tape develops dots by itself at heat sensing points After application of voltage the thermal tape is fed to the next printing position...

Page 11: ... platen release lever and the release shaft presses down the head ASSY This movement releases the head AS SY from the platen ASSY Tape can be set under this condition By closing the top cover ASSY the head ASSY is automatically pressed against the platen ASSY Fig 2 1 2 Press Contact and Release Mechanism of Thermal Head Platen release lever Head spring L Platen ASSY Release gear Link lever Top cov...

Page 12: ... thermal head Atthis 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 Fig 2 1 3 Tape Feed Mechanism Thermal tape Thermal head Platen Double gear C Double gear B Platen gear Double gear A Tape feed motor ASSY ...

Page 13: ...ar When the cam is rotated once the cutter motor stops and stays again at the position where the cutter home position detect sensor is ON This mechanism provides the reverse driving system in case of the tape jam between the 2 blades When the driving system is reversed the cutter motor stops and stays again at the position where the cutter home position detect sensor is ON Fig 2 1 4 Automatic Tape...

Page 14: ...he cover sensor arm pushes the cover open cover lock sensor push switch and the signal of the top cover ASSY close status is output Fig 2 1 5 Cover Open Cover Lock Sensor Push Switch SB PCB ASSY Cover sensor arm Cover open cover lock sensor push switch Rib Top cover ASSY Cover open cover lock sensor push switch SB PCB ASSY Top cover ASSY Cover sensor arm ...

Page 15: ...for adjustment of the media position detect sensor is mounted on it 2 2 3 Media Position Detect Sensor PCB Tape Sensor PCB ASSY This sensor detects the printing start position for the die cut label and checks existence of the zebra pattern media for the free length label using the reflection type photo sensor 2 2 4 Button LED PCB SB PCB ASSY This is the PCB equipped with ON OFF button Feed button ...

Page 16: ...es the drive power to feed media This motor is step motor with 35 diameter and drive voltage is 25V 2 2 7 Full Cutter Motor Cutter Motor ASSY The cutter motor supplies the drive power to cut media This motor is a DC motor of which drive voltage is VH 25V 2 2 8 Thermal Head Thermal head is thick film and drive built in type thermal head which consists of 720 dots by one row 300dpi The drive voltage...

Page 17: ...ash ROM Fig 2 3 1 Block Diagram of the Main PCB INT INT INT USB IF EEPROM 4Kbit CPU V850ES JH3 H RENESAS 6MHZ ROM 256KB RAM 40KB 8bit bus Media type detect circuit 5 selector switches Media position detect sensor circuit Photo sensor Cover open sensor circuit Cutter home position detect sensor circuit ON OFF button Feed Cut Editor Lite button LED Green Red Green LED AC power supply Switching power...

Page 18: ...rpose 1 0 1 0 0 File Folder 0 1 1 0 0 CD DVD 1 1 1 0 0 Square Paper 0 0 1 1 0 Round Paper 12 1 0 0 0 1 Round Paper 24 0 1 0 0 1 Postage Print only for U S A 0 1 1 1 0 Continuous Length Paper 12 0 1 0 1 1 Continuous Length Paper 29 0 0 1 0 1 Continuous Length Paper 38 only for EU 1 1 0 0 1 Continuous Length Paper 50 only for EU 1 1 0 1 1 Continuous Length Paper 62 1 0 1 0 1 Continuous Length Paper ...

Page 19: ...your body 2 When transporting PCBs be sure to wrap them in conductive sheets such as aluminum foil 3 When using soldering irons and other heat generating tools take care not to damage the resin parts such as wires PCBs and covers 4 Be careful not to lose small parts such as screws washers or other parts removed for parts replacement 5 Tighten screws according to the tightening torque lists 6 Lubri...

Page 20: ...SSY Taptite bind B M2 6x8 2 0 343 0 049 Media PCB ASSY Taptite bind B M2 6x8 2 0 343 0 049 Panel cover Taptite bind B M2 6x8 2 0 343 0 049 SB PCB ASSY Taptite bind B M2 6x8 2 0 343 0 049 Upper cover Screw bind M2 6x4 2 0 392 0 098 Taptite bind B M2 6x8 5 0 343 0 049 Insert guide Taptite bind B M2 6x8 2 0 343 0 049 Mecha ASSY Taptite bind B M2 6x8 2 0 343 0 049 Cutter unit ASSY Screw bind M2 6x5 2 ...

Page 21: ...III 3 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 ...

Page 22: ...III 4 Grease to be used Silicon grease G501 rice grain sized Platen gear Double gear C ...

Page 23: ... initialize the machine before disassembly 1 Turn off the ON OFF button and disconnect the AC cord Fig 3 4 1 Removing the Thermal Tape and the Top Cover ASSY 1 2 Open the top cover ASSY 3 Remove the thermal tape from the machine Fig 3 4 2 Removing the Thermal Tape and the Top Cover ASSY 2 AC cord ON OFF button 1b 1a Top cover ASSY 2 3 Thermal tape ...

Page 24: ...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 Fig 3 4 4 Removing the Thermal Tape and the Top Cover ASSY 4 4a 4b Rib 4a Rib 4b Top cover ASSY Upper cover Top cover ASSY Upper cover Bosses Ribs Top cover ASSY Link lever Groove Tab Boss ...

Page 25: ...III 7 6 Remove the two screws from the top cover ASSY Fig 3 4 5 Removing the Thermal Tape and the Top Cover ASSY 5 Screws Top cover ASSY ...

Page 26: ...upply ASSY and the Main PCB ASSY 1 3 Remove the two screws and then remove the power supply ASSY from the under cover NOTE At this point the sub ASSY inlet harness is still attached and therefore the power supply ASSY cannot be removed yet Fig 3 4 7 Removing the Power Supply ASSY and the Main PCB ASSY 2 Screws Screws Lower plate ASSY Under cover Sub ASSY inlet harness Screws Power supply ASSY Unde...

Page 27: ...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 Fig 3 4 9 Removing the Power Supply ASSY and the Main PCB ASSY 4 Power supply ASSY Power8 harness ASSY Main PCB ASSY Main PCB harness Power supply ASSY Power8 harness ASSY ...

Page 28: ... 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 Fig 3 4 11 Removing the Power Supply ASSY and the Main PCB ASSY 6 CN1 CN2 CN3 CN4 CN7 CN5 CN6 CN10 CN9 Main PCB ASSY Screws FG harness ASSY Screws Ground spring plate Main PCB ASSY Under cover ...

Page 29: ...III 11 9 Remove the insulating sheet S from the under cover Fig 3 4 12 Removing the Power Supply ASSY and the Main PCB ASSY 7 Insulating sheet S Under cover ...

Page 30: ...oving 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 Fig 3 4 14 Removing the Sub ASSY Inlet 2 Sub ASSY inlet harness Sub ASSY inlet harness Power supply ASSY Sub ASSY inlet Under cover Hooks ...

Page 31: ...III 13 4 Removing the Media PCB ASSY 1 Remove the two screws and then remove the media PCB ASSY from the under cover Fig 3 4 15 Removing the Media PCB ASSY Screws Media PCB ASSY Under cover ...

Page 32: ...ove the panel cover to the direction of the arrow from the upper cover Fig 3 4 16 Removing the Panel Cover 1 4 Turn the panel cover upside down 5 Remove the two screws and then remove the SB PCB ASSY from the panel cover Fig 3 4 17 Removing the Panel Cover 2 Screws Panel cover Hook Hook Section A Upper cover Screws Panel cover SB PCB ASSY ...

Page 33: ...tton and the LED guide from the panel cover Fig 3 4 18 Removing the Panel Cover 3 7 Remove the cover sensor arm from the panel cover Fig 3 4 19 Removing the Panel Cover 4 Panel cover LED guide Feed button Power button Panel cover Cover sensor arm ...

Page 34: ... 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 Fig 3 4 20 Disassembling the Upper Cover and the Under Cover 1 Under cover Hook Screws B Screws B Screws A Hook Upper cover ...

Page 35: ...pper cover Fig 3 4 21 Disassembling the Upper Cover and the Under Cover 2 4 Turn the upper cover upside down and then remove the two screws and then remove the insert guide from the upper cover Fig 3 4 22 Disassembling the Upper Cover and the Under Cover 3 Rib Upper cover Flat cable of the tape sensor PCB ASSY Screws Insert guide Upper cover ...

Page 36: ...III 18 5 Remove the tape sensor PCB ASSY from the insert guide Fig 3 4 23 Disassembling the Upper Cover and the Under Cover 4 Tape sensor PCB ASSY Insert guide ...

Page 37: ...cha 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 Fig 3 4 24 Removing the Mecha ASSY Mecha ASSY Screws Tab Under cover Tab Tab 2b 2a Mecha ASSY ...

Page 38: ...III 20 8 Removing the Cutter Unit ASSY 1 Remove the two screws and then remove the cutter unit ASSY from the mecha ASSY Fig 3 4 25 Removing the Cutter Unit ASSY Screws Cutter unit ASSY Mecha ASSY ...

Page 39: ...remove the double gear C from the 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 Fig 3 4 27 Disassembling the Mecha ASSY 2 Hook Double gear C Mecha ASSY Mecha ASSY Double gear B Platen gear ...

Page 40: ...ling 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 Fig 3 4 29 Disassembling the Mecha ASSY 4 Screw Platen shaft bushing Right side Mecha ASSY Platen ASSY Platen shaft bushing Left side Platen ASSY Mecha ASSY Screw ...

Page 41: ...III 23 6 Remove the head hold spring from the mecha ASSY Fig 3 4 30 Disassembling the Mecha ASSY 5 Mecha ASSY Head hold spring 6a 6b 6c ...

Page 42: ...pact on the heating element of a head ASSY when removing the head ASSY Fig 3 4 31 Disassembling the Mecha ASSY 6 8 Remove the two head springs L from the mecha ASSY Fig 3 4 32 Disassembling the Mecha ASSY 7 Head ASSY 7a Mecha ASSY Head ASSY Heating element 7b 7b 7c 7d Head springs L Mecha ASSY ...

Page 43: ...ig 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 Fig 3 4 34 Disassembling the Mecha ASSY 9 Mecha ASSY Double gear A Retaining ring E2 5 Mecha ASSY Screws FG harness ASSY Tape feed motor ASSY ...

Page 44: ...the tape feed motor ASSY Fig 3 5 1 Reassembling the Mecha ASSY 1 2 Assemble the double gear A onto the shaft of the mecha ASSY with the retaining ring E2 5 NOTE 1 Confirm that the retaining ring E2 5 is firmly assembled NOTE 2 Confirm that each gear moves smoothly Fig 3 5 2 Reassembling the Mecha ASSY 2 Mecha ASSY Screws FG harness ASSY Tape feed motor ASSY Mecha ASSY Double gear A Retaining ring ...

Page 45: ...III 27 3 Assemble the two head springs L onto the bosses of the mecha ASSY Fig 3 5 3 Reassembling the Mecha ASSY 3 Head springs L Mecha ASSY Bosses ...

Page 46: ...er bosses CAUTION Pay attention not to give strong impact on the heating element of a head ASSY when mounting the head ASSY Fig 3 5 4 Reassembling the Mecha ASSY 4 Bosses Insert the head springs L properly into the bosses of the head ASSY Insert the head springs L properly into the bosses of the mecha ASSY Head ASSY Head springs L Release shaft Release shaft Hook the left and right arms of the hea...

Page 47: ...III 29 5 Assemble the head hold spring onto the mecha ASSY as shown in the figure NOTE Be careful not to cut your fingers Fig 3 5 5 Reassembling the Mecha ASSY 5 Mecha ASSY Head hold spring 5a 5b 5c ...

Page 48: ...n ASSY onto the 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 Fig 3 5 7 Reassembling the Mecha ASSY 7 Platen shaft bushing Left side Platen ASSY Mecha ASSY Screw Screw Platen shaft bushing Right side Mecha ASSY Platen ASSY ...

Page 49: ...ar 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 Fig 3 5 8 Reassembling the Mecha ASSY 8 Mecha ASSY Double gear B Platen gear Hook Double gear C Mecha ASSY 9b 9a 9c ...

Page 50: ...III 32 2 Installing the Cutter Unit ASSY 1 Assemble the cutter unit ASSY onto the mecha ASSY with the two screws Fig 3 5 9 Installing the Cutter Unit ASSY Screws Cutter unit ASSY Mecha ASSY ...

Page 51: ...he section A of the panel cover 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 Fig 3 5 11 Reassembling the Panel Cover 2 Panel cover Cover sensor arm Shaft unit Section A Panel cover LED guide Feed button Power button ...

Page 52: ...ure Fig 3 5 12 Reassembling the Panel Cover 3 5 Pass the harness of the SB PCB ASSY through the hole of the under cover Fig 3 5 13 Reassembling the Panel Cover 4 NOTE For installing the panel cover to the upper cover refer to 6 Installing the Panel Cover Screws Panel cover SB PCB ASSY Panel cover Rib Harness of the SB PCB ASSY Cover sensor arm Under cover Harness of the SB PCB ASSY Hole ...

Page 53: ...er cover 3 Fit the hole B of the mecha ASSY intothe boss on the under cover and fit the two ribs of the mecha ASSY into the holes C on the under cover 4 Secure the mecha ASSY with the two screws Fig 3 5 14 Installing the Mecha ASSY 1 Mecha ASSY Screws Hook A Under cover Hook A Hook A Rib Rib Hole C Hole C Boss Hole A Harness of the cutter sensor Harness of the cutter motor Hole B Harness of the cu...

Page 54: ...under cover respectively as shown in the figure Fig 3 5 15 Installing the Mecha ASSY 2 Hole Mecha ASSY Hole Harness of the mecha Hook FG harness ASSY Harness of the cutter unit ASSY Harness of the SB PCB ASSY Hole Flat cable of the head ASSY Harness of the mecha ASSY Harness of the tape feed motor ASSY Hole Front ...

Page 55: ...til 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 NOTE 3 Fold the flat cable after assembling the tape sensor PCB ASSY Fig 3 5 16 Reassembling the Upper Cover and the Under Cover 1 Tape sensor PCB ASSY Groove Insert guide Groove Tape sensor PCB ASSY Insert guide Flat cable ...

Page 56: ...ling the Upper Cover and the Under Cover 2 4 Turn the upper cover upside down and then pass the flat cable of the tape sensor PCB ASSY through the rib of the back side of the upper cover Fig 3 5 18 Reassembling the Upper Cover and the Under Cover 3 Screws Insert guide Upper cover Hole Flat cable of the tape sensor PCB ASSY Rib Upper cover Flat cable of the tape sensor PCB ASSY ...

Page 57: ... bonding state 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 Fig 3 5 20 Reassembling the Upper Cover and the Under Cover 5 Mecha ASSY Link lever Platen release lever Flat cable of the tape sensor PCB ASSY Under cover Hole ...

Page 58: ...er 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 The screws B are taptite bind B M2 6x8 Fig 3 5 21 Reassembling the Upper Cover and the Under Cover 6 Under cover Hook Screws B Screws B Screws A Hook Upper cover Upper cover Hole Link lever ...

Page 59: ...e 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 Fig 3 5 22 Installing the Panel Cover Screws Panel cover Hooks A Hook B Hook B Rib Rib Upper cover Hole Hole ...

Page 60: ...7 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 Fig 3 5 23 Installing the Media PCB ASSY Screws Media PCB ASSY Under cover ...

Page 61: ...r cover and put it untilits hooks are properly hooked Fig 3 5 24 Reassembling the Sub ASSY Inlet 1 3 Solder the harnesses of the sub ASSY inlet to the power supply ASSY as shown in the figure Fig 3 5 25 Reassembling the Sub ASSY Inlet 2 Under cover Sub ASSY inlet Hooks Hole Harnesses of the sub ASSY inlet Power supply ASSY Power supply ASSY Harnesses of the sub ASSY inlet ...

Page 62: ...ess of the sub ASSY inlet and the harness of the media PCB ASSY as shown in the figure Fig 3 5 26 Reassembling the Sub ASSY Inlet 3 Hook Under cover Front Hook Hook Hook Sub ASSY inlet To power supply ASSY Hook Media PCB ASSY ...

Page 63: ...talling 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 Fig 3 5 28 Installing the Main PCB ASSY and the Power supply ASSY 2 Insulating sheet S Boss Under cover Screws FG harness ASSY Screws Ground spring plate Main PCB ASSY FG harness ASSY Boss Under cover ...

Page 64: ...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 Fig 3 5 30 Installing the Main PCB ASSY and the Power supply ASSY 4 Power supply ASSY Power8 harness ASSY Power supply ASSY Power8 harness ASSY Main PCB ASSY Main PCB harness ...

Page 65: ...Main PCB ASSY and the Power supply ASSY 5 7 Connect the five connectors CN1 CN2 CN3 CN6 CN7 and the two flat cables CN4 CN10 onto the main PCB ASSY Fig 3 5 32 Installing the Main PCB ASSY and the Power supply ASSY 6 Harness of the sub ASSY inlet Screws Power supply ASSY Under cover Slit Main PCB harness Power8 harness ASSY CN1 CN2 CN3 CN4 CN7 CN5 CN6 CN10 CN9 Main PCB ASSY ...

Page 66: ...low Fig 3 5 34 Routing the Harnesses and the Flat cables Harness of the tape feed motor ASSY Main PCB ASSY CN6 Slit Front Slit Pin Harness of the media PCB ASSY Harness of the tape feed motor ASSY FG harness ASSY Cutter motor harness Cutter sensor harness Harness of the SB PCB ASSY Flat cable of the head ASSY Power8 harness ASSY Flat cable of the tape sensor PCB ASSY Cutter sensor harness Main PCB...

Page 67: ...III 49 9 Assemble the lower plate ASSY onto the under cover with the four screws Fig 3 5 35 Installing the Main PCB ASSY and the Power supply ASSY 8 Screws Screws Lower plate ASSY Under cover ...

Page 68: ...ure the top cover ASSY with the two screws Fig 3 5 36 Installing the Top Cover ASSY and the Thermal Tape 1 2 Assemble the link lever onto the top cover ASSY Fig 3 5 37 Installing the Top Cover ASSY and the Thermal Tape 2 Screws Top cover ASSY Top cover ASSY Link lever ...

Page 69: ... the corresponding rib hole of the upper cover and then fit the other boss into the rib hole by bending the rib Fig 3 5 38 Installing the Top Cover ASSY and the Thermal Tape 3 3a 3b Rib 3a Rib 3b Top cover ASSY Upper cover Top cover ASSY Upper cover Bosses Ribs ...

Page 70: ...III 52 4 Assemble the thermal tape onto the machine 5 Close the top cover ASSY Fig 3 5 39 Installing the Top Cover ASSY and the Thermal Tape 4 Top cover ASSY 5 4 Thermal tape ...

Page 71: ...dth gray print is performed This print operation is repeated until the power is turned OFF Print sample 3 Confirm that the tape is sent properly print is correct and the tape is cut properly during the demonstration print If you find any problems consult CHAPTER IV TROUBLESHOOTING AND ERROR MESSAGE 4 Open the top cover ASSY and confirm that the head ASSY is released from the platen ASSY 5 Confirm ...

Page 72: ...mines this chapter carefully 4 1 PRECAUTIONS Be sure to observe the following precautions to prevent the secondary problems from happening during troubleshooting 1 Make sure to unplug an AC cord to ensure no power supply when doing conductivity test with a tester 2 When printing error occurs pull out the thermal head cable from the connecter until the peripheral circuit related to the thermal head...

Page 73: ...rable error Service call is required Status LED State Turned OFF Power OFF Green LED ON Power ON Orange LED ON Cover open While the machine is not running Blinking 1 sec frequency In a cooling state Blinking 2 sec cycle Error Media mark detect error Tape mounting error End of tape Tape jam Media mismatch or no media Communication error Cover open while the machine is running Image lay out error Lo...

Page 74: ...error EEP ROM error Blinking 1 8 sec cycle Cutter error Cutter reverse mode Red LED ON Boot mode Status LED State LED OFF for 0 3 sec Red LED ON for 0 3 sec LED OFF for 0 3 sec LED OFF for 0 9 sec Red LED ON for 0 3 sec Red LED ON for 0 3 sec ...

Page 75: ...application Option 1 Install the correct roll of labels or tape into the machine and then click on Resume to continue to print Option 2 Click Cancel to cancel print job Change the paper setting in the application so that it matches the media loaded in the machine Then try printing again Cover open Close the cover Connected Brother QL is not Brother QL 700 Connect the correct model Paper cannot be ...

Page 76: ...ing sent Please wait Printing Printing Please wait 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 Error of unknown cause occurred Turn the printer off then on again If the error cannot be resolved repairs will be necessary Error Messag...

Page 77: ...y that Head thermistor is defective Replace the Main PCB Assy and check again In case of Motor Temp is NG There is a possibility that Motor thermistor is defective Replace the Main PCB Assy and check again In case of EL Button is NG Check if there is no obstacle around the EL button Media and cover sensors check Check failure Sensor test was canceled 1 Check if there is no obstacle around the medi...

Page 78: ...Y Replace the head spring L Is the head pressure 1 7kg 10 at the roller center Is the head spring L attached correctly Attach the head spring L in correct way Are the thermal head and the platen dirty The thermal head and the platen are dirty Clean the thermal head and the platen The thermal head is defective Replace the thermal head ASSY Is the platen rubber deformed ...

Page 79: ...ce the media PCB ASSY Load a tape correctly Install the sensor correctly The sensor is defective Replace the media PCB ASSY Is the output signal of the media PCB correct Is a tape loaded correctly Is the media type detect sensor installed correctly Is the sensor harness damaged Replace the main PCB ASSY ...

Page 80: ...al to the button OK Replace the main PCB ASSY Correct the connection The ON OFF button supports the Status LED The Editor Lite button supports the Editor Lite LED Replace the SB PCB ASSY Replace the SB PCB ASSY Replace the SB PCB ASSY Is the voltage between each Pin more than 3V with an oscilloscope STATUS lamp Green CN3 Pin4 Red CN3 Pin3 Editor Lite lamp Green CN3 Pin8 ...

Page 81: ...Replace the main PCB ASSY Is the print head cable connected correctly Is the thermal head appearance normal If replace the main PCB ASSY is it OK Replace the power supply ASSY Y N N Y The interface malfunction Is the USB cable connected correctly Is the USB cable damaged The USB cable is defective Replace the cable Correct the connection Replace the main PCB ASSY ...

Page 82: ...unit ASSY Y Does the cutter motor rotate N Replace the cutter unit ASSY Y Is the motor harness damaged N Replace the cutter unit ASSY N Is the connecter connected to the main PCB correctly Y Correct the connection Y N Replace the main PCB ASSY If replace the main PCB ASSY is it OK Replace the cutter unit ASSY ...

Page 83: ... ASSY Replace the main PCB ASSY Try to print after replace a new roll Is tape feed normal Is paper dust on the platen Is the head spring L attached correctly Is the motor connected correctly Is the motor harness damaged If replace the main PCB ASSY is it OK Is the head pressure 1 7kgf 10 at the roller center Does the motor rotate Do the gears rotate The platen is defective Replace the platen ASSY ...

Page 84: ...1 2 Operating procedure of the VR Adjustment Tool Select the VR Adjustment Tool QL700tstVRAdjust exe and start it Adjust the sensor value while measuring the VR value so that the sensor value becomes the acceptable range Fig 1 VR Adjustment Tool 1 Connect the machine to your PC with the USB cable and turn ON the power for the machine 2 When there is not a driver in your PC the Found New Hardware W...

Page 85: ...g 4 Click the VR adjustment button and adjust the sensor value by using the screwdriver so that the sensor value in the Results column is in the range of 220 2 Click the Quit VR adjustment button to complete the adjustment after adjusting the value Fig 4 VR adjustment 62mmx100mm 2 3 7 x4 202 6 2 m m x 1 0 0 m m 2 3 7 x 4 2 0 2 Tape sensor PCB ASSY Release coated paper Upper cover Start the tool If...

Page 86: ... Operation Check of the Editor Lite 1 2 2 Items Required for the Inspection Personal Computer PC Supported OS is only Windows XP No driver is necessary AC adapter Use the AC adapter which is attached to QL 700 USB cable For connecting the machine to your PC Use the USB cable which is attached to QL 700 Media Die cut tape 62 x 100mm only release coated paper and free length tape 62mm 1 2 3 Setting ...

Page 87: ... connect the machine to the PC with the USB cable and turn ON the power for the machine If the Found New Hardware Wizard screen is displayed click the Cancel button Refer to Fig 2 NOTE The Servicemen Software Tool is able to perform inspection even if the driver is not installed And check that the machine is the E mode In the case of EL mode the communication between the PC and the machine is not ...

Page 88: ...pection 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 Fig 6 Main screen QL 700 Serviceman Software Tool The background turns yellow when selected Start the selected inspection Change the inspection item Clear the results of inspection and shif...

Page 89: ...s The order is not fixed However be sure that Write serial no is to be implemented at the end of the all inspections Table 1 List of inspection names Inspection names Read serial no Write add media information Write default eeprom data Sensor white level check Sensor black level check Temperature and EL button check Media and cover sensors check Cut test Adjustment print test Continuous Adjustment...

Page 90: ...pection is started be sure to implement Write serial no lastly 1 If the top cover ASSY is opened close the top cover ASSY And then check that the Status LED upper side of ON OFF button lights up green Fig 7 Status LED Cover close 2 Check that the background of Read serial no is yellow and click the Run button Fig 8 Read serial no 3 Type the 15 digits of the serial number printed on the nameplate F...

Page 91: ...olumn and the Serial number column on the screen Read serial no OK Fig 10 Read serial no OK Read serial no error Can not connect Communication with the machin e is not possible Che ck that the machine is connected to the PC with the USB cable co rrectly and the power for the machine is turned ON and the machine is E mode Fig 11 Can not connect ...

Page 92: ...thin the acceptable range the OK NG dialogue is displayed A When the release coated paper is set correctly Click the OK button to finish the inspection B When the release coated paper is not set correctly Click the NG button to finish the inspection And then reset the release coated paper correctly and inspect again NOTE When the measured value is out of the acceptable range the OK NG dialogue is ...

Page 93: ...vel 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 14 Sensor level check NG ...

Page 94: ... buttons or the keys on the keyboard And then click the Run button 3 If the measured value is within the acceptable range the OK NG dialogue is displayed A When the release coated paper etc is not set Click the OK button to finish the inspection B When the release coated paper etc is set Click the NG button to finish the inspection And then remove the release coated paper and inspect again NOTE Wh...

Page 95: ...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 Display example in case of OK Fig 17 Sensor level check OK ...

Page 96: ... dialogue Fig 18 Ad test screen 3 If the three following items is checked push the EL button on the machine When cannot check them click the NG button and finish the inspection Checking items 1 Head Temp is OK Acceptable range 0x2D Measured value 0xAD 2 Motor Temp is OK Acceptable range 0x2B Measured value 0xAC 3 Editor Lite LED left LED turns on the light Fig 19 EL button test mode 4 If the pushi...

Page 97: ...e starting time of the inspection It is not displayed in the state of the normal procedure When the media sensor is released shift to the next state Fig 20 Starting Media and cover sensors check NOTE When the message is displayed even if nothing touches the media sensor finish the inspection by clicking the NG button 3 If the following message is displayed push all media sensors It is not necessar...

Page 98: ...en is closed The inspection is completed and shift to the next inspection Fig 23 Completing Media and cover sensors check NOTE It takes a little time for a while until the inspection screen is closed after displaying the message 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 to Done ...

Page 99: ...ven if open and close the top cover ASSY 2 If the Press Feed Key is displayed on the Results column in the main screen check that the free length tape 62mm is set into the machine And then push the Feed button on the machine NOTE Click the Stop button when stopping Fig 24 Checking Feed 3 If the feeding of the machine is performed correctly and the Press Cut Key is displayed on the Results column i...

Page 100: ...he Up Down buttons or the keys on the keyboard And then click the Run button 2 If the adjustment of the margin is started the Adjust print screen is displayed and the test pattern is printed NOTE Click the NG button to stop the printing on the way Fig 26 Continuous print pattern 62mm 3 If the test pattern is printed the OK NG dialogue is displayed Measure whether the top margin is the specified va...

Page 101: ...the specified value NOTE The adjustment value is possible to change with the Up Down buttons or the keys NOTE Click the NG button when stopping the adjustment Fig 28 Adjust print screen 5 If the adjustment value is selected click the Print button to print the test pattern again 6 If the test pattern is printed the OK NG dialogue is displayed When the top margin is within the specified value Click ...

Page 102: ...en contents on the dialogue If check the written contents finish the inspection NOTE When this inspection is completed and the power supply of the machine is turned off and on the machine starts with EL mode When inspect again perform it after changing into E mode NOTE Starting with EL mode is normal after completing the inspection When the machine is E mode with the power supply turned on again t...

Page 103: ...tarting and the operation check in this state 1 After checking the Serviceman Software Tool Reboot the machine Start the machine in the state that the LED upper side of EL button lights up Fig 30 EL button On 2 When the PC detects the machine the QL 700 screen is displayed Select the P touch Editor Lite and click the OK button Fig 31 P touch Editor Lite In the case of EL mode the left LED turns on...

Page 104: ...click the Print button Fig 33 P touch Editor Lite Print 5 The Sending the print data to the machine screen is displayed If the sending data is completed the screen is closed And perform the printing Check whether the print result is same as the input pattern Fig 34 Sending print data If click the Check Media button detect the installed media If the media is different select the media by the right ...

Page 105: ...ment print test Continuous can be changed Note that changes cannot be saved Settings for other items cannot be changed Even if they canbe changed changes do not affect the Tool 1 Click the General settings button of the Serviceman Software Tool Fig 35 General settings 2 Click the Setting button of the Adjustment print test Continuous on the Config screen Fig 36 Config screen ...

Page 106: ...attern 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 NOTE The path is not saved here The path setting returns to the default when the Tool is rebooted Fig 38 Setting screen Print Setting ...

Page 107: ...Sep 2011 SM PT041 1 Printed in Japan ...

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Brother QL-700, Service Manual

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Summary of Contents for QL-700

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