SERVICE MANUAL MODEL: PT-2700/2710

Transcription

1 P-touch SERVICE MANUAL MODEL: PT-2700/2710

2 PREFACE This publication is a service manual covering the specifications, theory of operation, disassembly/reassembly procedure, and troubleshooting the Brother PT-2700/2710. It is intended for service personnel and other concerned persons to accurately and quickly provide after-sale service for our PT-2700/2710. To perform appropriate maintenance so that the machine is always in 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 CHAPTER II CHAPTER III CHAPTER IV SPECIFICATIONS THEORY OF OPERATION DISASSEMBLY AND REASSEMBLY TROUBLESHOOTING Copyright Brother 2006 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice.

3 CONTENTS CHAPTER I SPECIFICATIONS... I MECHANICAL SPECIFICATIONS... I External Appearance... I Keyboard... I Display... I Printing Mechanism... I Tape Cutter... I ELECTRONICS SPECIFICATIONS... I Character Generator... I Power Supply... I KEY COMMANDS FOR SPECIAL FUNCTIONS... I Initializing... I Demonstration Print... I-7 CHAPTER II THEORY OF OPERATION... II MAIN MECHANISM... II Roller Holder ASSY Setting & Retracting Mechanism... II Tape & Ribbon Feed Mechanism... II Automatic Tape Cutter Mechanism... II Roller Holder ASSY & Cassette Cover Interlocking Mechanism... II OUTLINE OF CONTROL ELECTRONICS... II Configuration... II Main PCB... II-8 [ 1 ] Block Diagram... II-8 [ 2 ] Cassette Sensor... II-9 CHAPTER III DISASSEMBLY AND REASSEMBLY... III SAFETY PRECAUTIONS... III TIGHTNING TORQUE LISTS... III LUBRICATION POINTS LIST... III-2 i

4 3.4 DISASSEMBLY PROCEDURE... III-3 [ 1 ] Removing the Battery Lid and Batteries... III-3 [ 2 ] Removing the Tape Cassette... III-3 [ 3 ] Removing the Cassette Cover... III-3 [ 4 ] Removing the Bottom Cover... III-4 [ 5 ] Removing the Blind Cover... III-4 [ 6 ] Removing the Battery Terminal... III-5 [ 7 ] Removing the Chassis ASSY... III-6 [ 8 ] Removing the Battery Terminal 24 and PCB Holder... III-8 [ 9 ] Removing the Main PCB ASSY... III-10 [ 10 ] Removing the Rubber 67 Key... III-11 [ 11 ] Removing the COG Holder Sub ASSY and LCDM... III-11 [ 12 ] Removing the Power PCB ASSY... III-12 [ 13 ] Removing the Cassette PCB ASSY... III-13 [ 14 ] Removing the Anti Static Brush... III-13 [ 15 ] Disassembling the Chassis ASSY... III REASSEMBLY PROCEDURE... III-20 [ 1 ] Assembling the Chassis ASSY... III-20 [ 2 ] Installing the Anti Static Brush... III-25 [ 3 ] Installing the Cassette PCB ASSY... III-26 [ 4 ] Installing the Power PCB ASSY... III-27 [ 5 ] Installing the COG Holder Sub ASSY and LCDM... III-28 [ 6 ] Installing the Rubber 67 Key... III-29 [ 7 ] Installing the Main PCB ASSY... III-30 [ 8 ] Installing the PCB Holder and Battery Terminal III-30 [ 9 ] Installing the Chassis ASSY... III-34 [ 10 ] Installing the Battery Terminal... III-37 [ 11 ] Installing the Blind Cover... III-37 [ 12 ] Installing the Bottom Cover... III-38 [ 13 ] Installing the Cassette Cover... III-38 [ 14 ] Loading the Tape Cassette... III-39 [ 15 ] Loading the Batteries and Installing the Battery Lid... III-39 ii

5 3.6 TEST MODE... III-40 [ 1 ] Tape Feed Adjustment... III-40 [ 2 ] Solder Point Check... III-41 [ 3 ] Machine Specifications Writing Mode... III-42 [ 4 ] LCD Indication Check... III-42 [ 5 ] Cassette Sensor Switch Check... III-43 [ 6 ] Key Check... III-43 [ 7 ] Print Check... III-44 [ 8 ] Cutting Check... III-44 [ 9 ] Encode Reading Check... III-45 [ 10 ] Serial Number Writing Mode... III TROUBLESHOOTING FOR THE TEST MODE... III-46 [ 1 ] Solder Point Check Mode... III-46 [ 2 ] LCD Indication Check Mode... III-46 [ 3 ] Cassette Sensor Switch Check Mode... III-47 [ 4 ] Key Check Mode... III-48 [ 5 ] Print Check Mode... III-50 [ 6 ] Cut Check Mode... III-50 [ 7 ] Encode Reading Check Mode... III-52 [ 8 ] DC Motor Rotation Adjustment Mode... III-53 CHAPTER IV TROUBLESHOOTING... IV OVERVIEW... IV Precautions... IV After Repairing... IV TROUBLESHOOTING GUIDE... IV TROUBLESHOOTING FLOWS... IV-2 [ 1 ] Tape feeding failure... IV-2 [ 2 ] Printing failure... IV-4 [ 3 ] Powering failure (Nothing appears on the LCD and the backlight does not light.)... IV-6 [ 4 ] No key entry possible... IV-8 [ 5 ] Tape cutting failure... IV-8 iii

6 [ 6 ] Interface port failure... IV-9 [ 7 ] LCD indication error or backlight error... IV-9 [ 8 ] Tape cassette type not identified... IV-10 iv

7 CHAPTER I SPECIFICATIONS 1.1 MECHANICAL SPECIFICATIONS External Appearance Fig PT-2700/2710 [ 1 ] Dimensions (W x D x H) x x 71.8 mm [ 2 ] Weight Machine proper: Approx. 850 g (Machine proper only) In package: Approx g (including accessories, batteries and two tape cassettes) Keyboard [ 1 ] Entry system Rubber key pad [ 2 ] Number of function keys 67 (including [ON/OFF] key) [ 3 ] Key arrangement See Fig Display [ 1 ] Display type Liquid crystal display (LCD) with a backlight [ 2 ] Display composition 128 x 48 dots (Full graphics) + backlight [ 3 ] Field-of-view angle adjustment Fixed [ 4 ] Contrast adjustment For users: 5 degrees For factory setting: 21 degrees I-1

8 1.1.4 Printing Mechanism [ 1 ] Print speed 10 mm/second [ 2 ] Print head Type Thermal print head Heat generator Consists of 128 heating elements vertically aligned [ 3 ] Character size Point Character height Total number of dots Tape Cutter (1) Tape cutting Automatic cutter (scissors type) (2) Cutter unit Not user-replaceable I-2

9 PT-2700/2710 USA Fig Key Arrangement (1) I-3

10 PT-2700 UK Fig Key Arrangement (2) I-4

11 PT-2700 GBR Fig Key Arrangement (3) I-5

12 PT-2700 FRA Fig Key Arrangement (4) I-6

13 1.2 ELECTRONICS SPECIFICATIONS Character Generator [ 1 ] Internal font HELSINKI, BRUSSELS, US, FLORIDA, BELGIUM, SAN DIEGO, LOS ANGELS, CALGARY [ 2 ] Text buffer 280 characters [ 3 ] File memory 2800 characters, 99 files Power Supply [ 1 ] Power supply Two types (dry cells, AC adapter) [ 2 ] Battery type 8 alkaline dry cells (AA) [ 3 ] Service life of batteries Will last through one 24-mm wide tape cassette and then some. [ 4 ] Automatic powering-off Yes Dry cells AC adapter Normal mode: 5 min 60 min IF mode: 60 min 60 min In downloading: 5 min 5 min [ 5 ] AC adapter AD-60 (USA/CAN) MDL-H1 (EUROPE/ZAF/SGP) AD-6000 (AUS) 1.3 KEY COMMANDS FOR SPECIAL FUNCTIONS Initializing When the machine is turned off, press the [ON/OFF] key while pressing both the [Space] and [BS] keys so that the machine initializes the internal memory Demonstration Print When the internal memory is initialized, press the [Feed & Cut] key while pressing the [Space] key. Then, press the [D] key in the tape feed check mode so that the machine starts demonstration print. I-7

14 CHAPTER II THEORY OF OPERATION 2.1 MAIN MECHANISM Roller Holder ASSY Setting & Retracting Mechanism This mechanism consists of the roller release lever, roller holder release rod, and roller holder ASSY. The roller holder ASSY supports the platen roller and the tape feed sub roller so that they can move perpendicularly to the head ASSY and the tape feed roller, respectively, as well as rotating freely. Loading a tape cassette and closing the cassette cover pushes down the roller release lever which moves the roller holder release rod to the left (when viewed from the front of the machine). This pivots the roller holder ASSY around the shaft provided on the chassis so as to press the roller holder ASSY against the head ASSY side. The platen roller is pressed perpendicularly against the head ASSY with the tape and ink ribbon (only the tape when using stamp tape cassettes) sandwiched inbetween under a uniform load by the platen upper and lower springs. At the same time, the platen gear becomes engaged with the platen idle gear. Also, the tape feed sub roller is pressed perpendicularly against the tape feed roller built in the tape cassette with the tape (and base paper when using laminated tape cassettes or stamp tape cassettes) sandwiched inbetween under a uniform load by the roller holder upper and lower springs. At the same time, the sub roller gear becomes engaged with the tape idle gear. If you open the cassette cover, the roller release lever pops up so that the roller holder release rod retracts the roller holder ASSY from the head ASSY, providing you with enough space to replace the tape cassette. Head ASSY Adhesive tape Platen idle gear Laminate tape Tape cassette Tape feed roller Ink ribbon Tape feed sub roller Chassis ASSY Platen roller Roller holder ASSY Shaft Roller release lever Roller holder release rod (Tape feed) platen gear (Tape feed) sub roller gear Platen roller Platen lower spring Platen upper spring Tape feed sub roller (Top) Fig Roller Holder ASSY Setting & Retracting Mechanism II-1

15 2.1.2 Tape & Ribbon Feed Mechanism This mechanism consists of the tape feed motor (DC motor), gear train, and roller holder ASSY. Tape Feeding When you load a tape cassette and close the cassette cover, the tape feed roller inside the cassette and the tape feed sub roller in the roller holder ASSY sandwich the tape (the laminate tape or adhesive tape when using laminated tape cassettes) inbetween, as described in Subsection As the tape feed motor rotates, the encode gear rotates together. (The rotation of the encode gear is controlled by the photo interrpter ASSY.) Then, the rotation is transmitted to the tape idle gear (which rotates the tape feed sub roller gear) and platen idle gear (which rotates the tape feed platen gear) through the gear train, so that the tape and ink ribbon to be sandwiched inbetween are fed forwards. (The laminate tape, adhesive tape and ink ribbon to be sandwiched inbetween are fed when using laminated tape cassettes.) The feed amount of the platen is slightly less than that of the tape feed sub roller. Adhesive tape Transparent laminate tape Tape feed roller (Tape feed) sub roller gear Platen idle gear Head ASSY Roller holder ASSY Platen roller Tape feed motor (DC motor) Photo interrupter ASSY Tape idle gear Encode gear Platen idle gear Chassis ASSY Fig Tape Feeding Mechanism II-2

16 Adhesive tape Feeding (only for laminated tape cassettes) A laminated tape cassette contains both a transparent laminate tape roll and a separate adhesive tape roll. When a transparent laminate tape and an adhesive tape pass through the contact point (between the tape feed roller and tape feed sub roller), they are then bonded together into a single, printed tape. The ink printed on the transparent laminate tape is, therefore, sealed up with the adhesive tape. Ink Ribbon Feeding (except for stamp tape cassettes) As the tape feed motor rotates, the ribbon drive cam located at the middle of the gear train rotates counterclockwise. The ribbon take-up roll in the tape cassette, which is engaged with the ribbon drive cam, also rotates to take up the ink ribbon. To apply proper tension to the ink ribbon between the platen roller and the ribbon drive cam, the feed amount of the ribbon drive cam is slightly greater than that of the tape feed roller. The difference between the tape feed speeds at the platen roller and at the ribbon drive cam is absorbed by the clutch spring which is integrated in the ribbon drive cam and allows the cam to slip. This way, the ink ribbon is kept proper tense, which enables the ribbon to clearly separate from the tape at the stabilized angle after printing. Ribbon take-up roll Tape feed roller Tape feed sub roller Ink ribbon Platen roller Roller holder ASSY Head ASSY Ribbon drive cam Tape feed motor (DC motor) Chassis ASSY Fig Ribbon Feeding Mechanism II-3

17 2.1.3 Automatic Tape Cutter Mechanism This mechanism consists of the cutter fixed blade and the cutter movable blade driven by the cutter motor. Upon completion of printing and tape feeding, the CPU activates the cutter motor (DC motor) whose clockwise rotation is transmitted via the cutter double gears to the cutter moving gear. As the cutter moving gear rotates counterclockwise, its boss "X" (which is fitted in the opening of the cutter movable blade) moves the cutter movable blade on the shaft Y to the direction to the arrow as show in the figure below. Consequently, the cutter cuts the printed tape routing through the cutter movable and fixed blades, just like a scissors. After that, the CPU keeps the cutter motor on. When the cutter movable blade comes back to the home position, its end "Z" activates the cutter sensor actuator which presses the cutter sensor. The moment the CPU receives the sensor signal, it stops the cutter motor. Cutter fixed blade Cutter double gear Cutter motor ASSY (DC motor) Tape Y Full cutter sensor PRO ASSY Cutter movable blade Cutter moving gear X Z Actuator Fig Automatic Tape Cutter Mechanism II-4

18 2.1.4 Roller Holder ASSY & Cassette Cover Interlocking Mechanism Closing the cassette cover pushes down the roller release lever and brings the top of the lever into the hooked section provided on the inside of the cassette cover. As described in Subsection Roller Holder ASSY Setting & Retracting Mechanism, the roller release lever shifts the roller holder release rod so that the roller holder ASSY is pressed towards the head ASSY side. Tape cassette Platen roller Head ASSY Shaft Tape feed sub roller Roller holder ASSY Roller holder release rod Chassis ASSY Roller release lever Roller release lever Roller holder release spring Roller holder release rod (Roller Holder ASSY retracted) (Roller Holder ASSY engaged) Fig Roller Release Lever and Roller Holder Release Rod Hooked section Cassette cover Cassette cover Fig Roller Holder ASSY & Cassette Cover Interlocking Mechanism Opening the cassette cover pulls up the roller release lever placed in the hooked section of the cassette cover, which shifts the roller holder release rod so that the roller holder ASSY is retracted from the head ASSY side by the roller holder release spring. II-5

19 2.2 OUTLINE OF CONTROL ELECTRONICS Configuration Fig shows a block diagram of the control electronics of this machine. The control electronics consists of four printed circuit boards (main PCB, power supply PCB, key PCB, and cassette sensor PCB), two DC motors (tape feed motor and cutter motor), thermal print head ASSY, backlight module, sensors and encode. Note: When soldering chips on PCBs, use lead-free solder. Main PCB, Key PCB These manages all the components including an LCD, key pad, two DC motors, and thermal print head. Power Supply PCB This has the electrolytic capacitors (filters for output lines), AC adapter jack, USB port, battery terminal plates, and other related electronic devices to supply the control electronics and DC motors with power from the dry cells or AC adapter. DC Motors This machine has two DC motors - tape feed motor and cutter motor. The former feeds tape and ink ribbon and the latter drives the cutter to cut tape. Thermal Print Head This is a thick-film thermal print head which integrates a heat generator (consisting of 128 heating elements vertically aligned) and driver circuitry. Cassette Sensor PCB This cassette sensor PCB has six switches that detect the tape cassette type currently loaded. Encode The encode, which consists of an encode disc gear and a pair of photo interrupters, detects the rotation angle/direction of the tape feed motor. Backlight module (COG type LCD module) This lights up the backlight for the LCD. II-6

20 Fig Control Electronics II-7

21 2.2.2 Main PCB [ 1 ] Block Diagram Fig shows a block diagram of the main PCB. The main PCB consists of the following: CPU Oscillation circuit ROM (Masked) Reset circuit Solder points LCD control circuit Power ON/OFF circuit and power saving circuit USB interface circuit Feed motor driver circuit Backlight control circuit Cutter motor driver circuit Encode circuit Thermal head driver circuit EEPROM circuit Voltage detector circuit and temperature sensor circuit AC adapter detector circuit Cassette sensor Key board Cutter sensor circuit Fig Block Diagram of Main PCB II-8

22 [ 2 ] Cassette Sensor The sensor circuit consists of a 6-switch cassette sensor (SW1 through SW6). Loading a tape cassette turns on some of those six switches on the cassette sensor while keeping other switches off depending upon the ID encoding holes provided in the tape cassette currently loaded. If an encoding ID hole is closed, the corresponding sensor switch goes on. With the states of those sensor switches, the CPU identifies the tape width, ink ribbon type of the tape cassette,as listed in Table Table Coded Values for Identifying Tape Cassette Type Cassette type Quintuple switch SW1 SW2 SW3 SW4 SW5 Cassette not installed mm Non-laminated tape cassette mm 9mm 12mm 18mm 24mm Laminated tape cassette Non-laminated tape cassette Laminated tape cassette Non-laminated tape cassette Laminated tape cassette, Instane lettering tape cassette Non-laminated tape cassette, Fabric tape cassette, Refill tape cassette, Recycled tape cassette Laminated tape cassette Non-laminated tape cassette, Fabric tape cassette, Recycled tape cassette Instane lettering tape cassette, Iron-on transfer tape cassette Laminated tape cassette, Instane lettering tape cassette Non-laminated tape cassette, Refill tape cassette, Recycled tape cassette SW * The tape cassette type is detected by the detecting switches provided in the machine and the hole provided in the tape cassette. 0: ID hole opened, sensor switch OFF 1: ID hole closed, sensor switch ON SW6 SW5 SW4 SW3 SW2 SW1 <Position of sensor switches> (Top view) II-9

23 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. (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 tightning torque lists below. (6) Lubricate according to the lubrication points list. 3.2 TIGHTNING TORQUE LISTS Location Screw type Q ty Tightening torque N m (kgf cm) DC motor ASSY Screw, pan M1.7x ± (1.5 ± 0.5) Cutter ASSY Screw, pan (S/P washer) M3x6 DA ± (6 ± 1) Head ASSY Screw, bind M3x ± (5 ± 1) Full cutter sensor PRO ASSY Screw, pan M1.7x ± (1.5 ± 0.2) Cutter motor ASSY Screw, pan M1.7x ± (1.5 ± 0.5) Chassis ASSY Taptite, bind B M2.6x ± (4 ± 0.5) PCB holder Taptite, bind B M2.6x ± (4 ± 0.5) Bottom cover Taptite, bind B M2.6x ± (4 ± 1) Power PCB ASSY Taptite, bind B M2.6x ± (4 ± 0.5) Main PCB ASSY Taptite, bind B M2.6x ± (4 ± 0.5) Photo interrupter ASSY Screw, pan M1.7x ± (1.5 ± 0.5) III-1

24 3.3 LUBRICATION POINTS LIST Roller holder ASSY * Grease to be used: Silicon grease G501 (half of a rice-sized) Chassis ASSY Cutter ASSY * Grease to be used: Silicon grease G501 (half of a rice-sized) III-2

25 3.4 DISASSEMBLY PROCEDURE [ 1 ] Removing the Battery Lid and Batteries (1) Turn the machine upside down. (2) Remove the battery lid while pressing the section A of the lid, then take out the batteries. Note: Keep pressing the [ON/OFF] key for 20 seconds or more after removing the AC adaptor and batteries, in order to remove the electric charge to be stored in the electrolytic capacitor on the power PCB ASSY. Section A 1 2 Battery lid Fig Removing the Battery Lid and Batteries [ 2 ] Removing the Tape Cassette (1) Open the cassette cover and take out the tape cassette. [ 3 ] Removing the Cassette Cover (1) Press the rib of the cassette cover inwards to remove the cassette cover from the machine. Cassette cover 2 Rib 1 1 Rib Fig Removing the Cassette Cover III-3

26 [ 4 ] Removing the Bottom Cover (1) Remove the five screws and remove the bottom cover from the upper cover. Note: When removing the bottom cover, be careful not to pull the harness. Screws Bottom cover Fig Removing the Bottom Cover [ 5 ] Removing the Blind Cover (1) Release the three hooks and remove the the blind cover from the bottom cover. Blind cover Hook Hooks 2 1 Bottom cover Fig Removing the Blind Cover III-4

27 [ 6 ] Removing the Battery Terminal (1) Press the section A of the battery terminal with a driver. (2) Remove the two battery terminal from the bottom cover. Battery terminal Bottom cover Section A Driver Fig Removing the Battery Terminal III-5

28 [ 7 ] Removing the Chassis ASSY (1) Disconnect the power supply harness connector from the main PCB. Power PCB ASSY Power supply harness connector Fig Removing the Chassis ASSY (1) Main PCB (2) Disconnect the photo interrupter connector, head ASSY flat cable and full cutter sensor connector from the main PCB. (3) Remove the two DC motor harnesses and two cutter motor harnesses, which are soldered onto the main PCB. Head ASSY flat cable Upper cover Chassis ASSY DC motor harness Photo interrupter connector Main PCB Cutter motor harness Full cutter sensor connector Fig Removing the Chassis ASSY (2) III-6

29 (4) Remove the three screws and remove the chassis ASSY from the upper cover. Note: When removing the chassis ASSY, be careful not to cut your finger with the cutter. Screws Chassis ASSY FG harness Upper cover Fig Removing the Chassis ASSY (3) III-7

30 [ 8 ] Removing the Battery Terminal 24 and PCB Holder (1) Remove the battery terminal 24 from the bottom cover. Battery terminal 24 Bottom cover Fig Removing the Battery Terminal 24 and PCB Holder (1) (2) Remove the positive battery terminal and negative battery terminal from the bottom cover. Positive battery terminal Power supply harness Negative battery terminal Bottom cover Fig Removing the Battery Terminal 24 and PCB Holder (2) III-8

31 (3) Remove the battery terminal 24 harness and cassette PCB harness, which are soldered onto the main PCB. (4) Disconnect the USB harness connector, COG holder harness connector and LCDM flat cable from the main PCB. (5) Remove the ferrite core of the USB harness from the PCB holder. Note: When handling the main PCB, be sure to wear a ground band. Failure to do so may cause the element destruction of the electronic parts such as the LSI. COG holder harness connector LCDM flat cable Ferrite core Upper cover PCB holder Main PCB Battery terminal 24 harness Cassette PCB harness USB harness connector Fig Removing the Battery Terminal 24 and PCB Holder (3) (6) Remove the two screws and lift up the main PCB from the upper cover. Main PCB Screw Upper cover Screw Fig Removing the Battery Terminal 24 and PCB Holder (4) III-9

32 (7) Remove the three screws and remove the PCB holder from the upper cover. Screws PCB holder Upper cover Fig Removing the Battery Terminal 24 and PCB Holder (5) [ 9 ] Removing the Main PCB ASSY (1) Remove the main PCB ASSY from the upper cover. Main PCB ASSY Upper cover Fig Removing the Main PCB ASSY III-10

33 [ 10 ] Removing the Rubber 67 Key (1) Remove the rubber 67 key from the upper cover. Rubber 67 key Upper cover Fig Removing the Rubber 67 Key [ 11 ] Removing the COG Holder Sub ASSY and LCDM (1) Remove the COG holder sub ASSY from the upper cover. COG holder sub ASSY Upper cover Fig Removing the COG Holder Sub ASSY and LCDM (1) III-11

34 (2) Release the three hooks and remove the LCDM from the COG holder sub ASSY. Note: : The diffuser panel of the COG holder sub ASSY is very delicate. Be careful when handling it. LCDM 3 Hook 1 2 Hook COG holder sub ASSY 1 Hook Hook Hook Fig Removing the COG Holder Sub ASSY and LCDM (2) [ 12 ] Removing the Power PCB ASSY (1) Remove one screw and remove the power PCB ASSY from the upper cover. Screw Power PCB ASSY Upper cover Fig Removing the Power PCB ASSY III-12

35 [ 13 ] Removing the Cassette PCB ASSY (1) Release the two hooks and remove the cassette PCB ASSY from the upper cover. Cassette PCB ASSY Hooks Upper cover Fig Removing the Cassette PCB ASSY [ 14 ] Removing the Anti Static Brush (1) Remove the anti static brush from the upper cover. Anti static brush Upper cover Fig Removing the Anti Static Brush III-13

36 [ 15 ] Disassembling the Chassis ASSY (1) Remove the retaining ring. (2) Unhook the lever release spring from the section A where the spring is fixed, and remove the lever release spring from the roller release lever. (3) Remove the roller release lever from the chassis ASSY. Chassis ASSY Lever release spring Roller release lever Section A Retaining ring Fig Disassembling the Chassis ASSY (1) III-14

37 (4) Remove the retaining ring. (5) Pull the end of the roller holder release spring out of the section B which is the hole provided on the chassis ASSY. (6) Remove the roller holder ASSY and roller holder release rod from the chassis ASSY. (7) Remove the roller holder release spring from the roller holder ASSY. Note: Do not touch the roller of the roller holder ASSY. Retaining ring Roller holder release rod Roller holder ASSY 3 Roller holder release spring 2 Section B Chassis ASSY 1 Fig Disassembling the Chassis ASSY (2) Roller holder release spring (8) Remove one screw and remove the head ASSY from the chassis ASSY. Note: Do not touch the thermal head. Screw Thermal head Head ASSY Chassis ASSY Fig Disassembling the Chassis ASSY (3) III-15

38 (9) Remove the two screws and remove the photo interrupter ASSY from the chassis ASSY. Chassis ASSY Screws Photo interrupter ASSY Fig Disassembling the Chassis ASSY (4) (10) Remove the encode gear from the chassis ASSY. Chassis ASSY Encode gear Fig Disassembling the Chassis ASSY (5) III-16

39 (11) Remove the two screws and remove the DC motor ASSY from the chassis ASSY. DC motor ASSY Chassis ASSY Screws Fig Disassembling the Chassis ASSY (6) (12) Remove the one screw and remove the cutter ASSY from the chassis ASSY. Note: When removing the cutter ASSY, be careful not to cut your finger with the cutter. Chassis ASSY Screw Cutter ASSY Fig Disassembling the Chassis ASSY (7) III-17

40 (13) Remove the washer and remove the cutter moving gear from the chassis ASSY. (14) Remove the two cutter double gears from the chassis ASSY. Chassis ASSY Cutter moving gear Washer Cutter double gears Fig Disassembling the Chassis ASSY (8) (15) Remove the two screws and remove the cutter motor ASSY from the chassis ASSY. Chassis ASSY Cutter motor ASSY Screws Fig Disassembling the Chassis ASSY (9) III-18

41 (16) Remove the one screw and remove the full cutter sensor PRO ASSY from the chassis ASSY. Full cutter sensor PRO ASSY Screw Chassis ASSY Fig Disassembling the Chassis ASSY (10) (17) Remove the actuator from the chassis ASSY. Actuator 1 Chassis ASSY 2 Actuator Fig Disassembling the Chassis ASSY (11) III-19

42 3.5 REASSEMBLY PROCEDURE [ 1 ] Assembling the Chassis ASSY (1) Set the actuator into the chassis ASSY. Actuator Chassis ASSY 1 2 Actuator Fig Assembling the Chassis ASSY (1) (2) Secure the full cutter sensor PRO ASSY onto the chassis ASSY with the one screw. Full cutter sensor PRO ASSY Screw Chassis ASSY Fig Assembling the Chassis ASSY (2) III-20

43 (3) Secure the cutter motor ASSY onto the chassis ASSY with the two screws. Chassis ASSY Cutter motor ASSY Screws Fig Assembling the Chassis ASSY (3) (4) Set the cutter double gear A into the chassis ASSY. (5) Set the cutter double gear B into the chassis ASSY. (6) Set the cutter moveing gear into the chassis ASSY. (7) Set the washer into the chassis ASSY. Chassis ASSY Cutter moving gear Washer Cutter double gear A Cutter double gear B Fig Assembling the Chassis ASSY (4) III-21

44 (8) Put the section A of the chassis ASSY through the hole on the cutter ASSY. (9) Secure the cutter ASSY onto the chassis ASSY with the one screw. Bosses Screw Cutter ASSY Section A Chassis ASSY Fig Assembling the Chassis ASSY (5) (10) Secure the DC motor ASSY onto the chassis ASSY with the two screws. DC motor ASSY Chassis ASSY Screws Fig Assembling the Chassis ASSY (6) III-22

45 (11) Set the encode gear into the chassis ASSY. Note: When assembling the encode gear, be careful not to push it into the chassis ASSY too much. Chassis ASSY a a Encode gear Chassis ASSY Encode gear a-a: The same height Fig Assembling the Chassis ASSY (7) (12) Secure the photo interrupter ASSY onto the chassis ASSY with the two screws. Note: Set the photo interrupter ASSY onto the chassis ASSY so that the longer harness is upper than the shorter one. Chassis ASSY Screws Photo interrupter ASSY Fig Assembling the Chassis ASSY (8) III-23

46 (13) Put the head ASSY flat cable through the section B which is the hole provided on the chassis ASSY. (14) Secure the head ASSY with the one screw while aligning the head ASSY with the boss on the chassis ASSY. Note: Be sure that the boss on the chassis ASSY is placed on the center of the long hole on the head ASSY. Screw Head ASSY Long holes Chassis ASSY Section B Boss Head ASSY Boss Head ASSY flat cable Fig Assembling the Chassis ASSY (9) (15) Set the roller holder release spring into the roller holder ASSY. (16) Set the roller holder release rod into the roller holder ASSY. (17) Set the roller holder release rod and roller holder ASSY onto the chassis ASSY. (18) Hook the roller holder release spring into the section C of the chassis ASSY where the spring is fixed. (19) Set the retaining ring. Retaining ring Roller holder release rod Roller holder ASSY 1 Roller holder release spring Section C 2 Chassis ASSY 3 Roller holder release spring Fig Assembling the Chassis ASSY (10) III-24

47 (20) Set the roller release lever into the chassis ASSY. (21) Set the lever release spring into the roller release lever. (22) Hook the lever release spring into the section D of the chassis ASSY where the spring is fixed. (23) Set the retaining ring. Chassis ASSY Lever release spring Roller release lever Section D Retaining ring Fig Assembling the Chassis ASSY (11) [ 2 ] Installing the Anti Static Brush (1) Fit the anti static brush onto the upper cover. Anti static brush Upper cover Fig Installing the Anti Static Brush III-25

48 [ 3 ] Installing the Cassette PCB ASSY (1) Set the cassette PCB ASSY onto the upper cover. Important: When replacing the cassette PCB ASSY, implement each item described in 3.6 Test Mode. Rib Cassette PCB ASSY Cassette PCB ASSY Hooks Upper cover Rib Fig Installing the Cassette PCB ASSY (1) Note: Make sure that the actuator switches on the cassette PCB ASSY are moved smoothly. Actuator switch Cassette PCB ASSY Fig Installing the Cassette PCB ASSY (2) III-26

49 [ 4 ] Installing the Power PCB ASSY (1) Secure the power PCB ASSY with the one screw while aligning the power PCB ASSY with the boss on the upper cover. Screw Power PCB ASSY Upper cover Boss Boss Fig Installing the Power PCB ASSY III-27

50 [ 5 ] Installing the COG Holder Sub ASSY and LCDM (1) Set the LCDM onto the COG holder sub ASSY. Note 1: The diffuser panel of the COG holder sub ASSY is very delicate. Be careful when handling it. Note 2: Blow off the dust on the COG holder sub ASSY and LCDM before assembling them if possible, in order to prevent the dust or dirt gets into between them. Note 3: A fingerprint can be easily attached on both COG holder sub ASSY and LCDM. Be sure to wear a fingerstall when handling them. Note 4 : Set the LCDM onto the COG holder sub ASSY while pulling the three hooks, especially the one provided at the side outwards. Never push the LCDM into the COG holder sub ASSY forcibly. Failure to do so may cause that the glass of the LCDM is broken. LCDM Hook 1 2 Hook COG holder sub ASSY Hook Hook Hook Fig Installing the COG Holder Sub ASSY and LCDM (1) III-28

51 (2) Set the COG holder sub ASSY while aligning it with the boss on the upper cover. Note: Be sure that no dust or dirt is attached on the section A. Blow off the dust before assembling the COG holder sub ASSY, if possible. COG holder sub ASSY Upper cover Boss Section A Boss Rib Fig Installing the COG Holder Sub ASSY and LCDM (2) [ 6 ] Installing the Rubber 67 Key (1) Set the rubber 67 key while aligning it with the boss on the upper cover. Rubber 67 key Bosses Upper cover Bosses Fig Installing the Rubber 67 Key III-29

52 [ 7 ] Installing the Main PCB ASSY (1) Set the main PCB ASSY while aligning it with the boss on the upper cover. Main PCB ASSY Bosses Upper cover Bosses Fig Installing the Main PCB ASSY [ 8 ] Installing the PCB Holder and Battery Terminal 24 (1) Lift up the main PCB from the upper cover slightly. (2) Secure the PCB holder onto the upper cover with the three screws. Note: When assembling the PCB holder, be careful to handle the LCDM flat cable. Screws PCB holder Main PCB Upper cover LCDM flat cable PCB holder 2 1 Fig Installing the PCB Holder and Battery Terminal 24 (1) III-30

53 (3) Secure the Main PCB onto the upper cover with the two screws. Main PCB Screw Upper cover Screw Fig Installing the PCB Holder and Battery Terminal 24 (2) (4) Solder the cassette PCB harness onto the main PCB. (5) Solder the battery terminal 24 harness onto the main PCB. Yellow Black Brown Red Blue Green Yellow Orange Main PCB Ribs Cassette PCB harness Rib Battery terminal 24 harness Fig Installing the PCB Holder and Battery Terminal 24 (3) III-31

54 (6) Put the ferrite core of the USB harness into the section A. (7) Connect the USB harness connector into the main PCB. Power PCB ASSY Ferrite core USB harness connector Rib Main PCB Section A Fig Installing the PCB Holder and Battery Terminal 24 (4) (8) Connect the LCDM flat cable into the main PCB. (9) Connect the COG holder connector into the main PCB. LCDM flat cable COG holder connector COG holder sub ASSY Main PCB Fig Installing the PCB Holder and Battery Terminal 24 (5) III-32

55 (10) Set the positive battery terminal and negative battery terminal into the bottom cover. Positive battery terminal Power supply harness Rib Negative battery terminal Upper cover Bottom cover Fig Installing the PCB Holder and Battery Terminal 24 (6) (11) Set the battery terminal 24 into the bottom cover. Battery Terminal 24 Bottom cover Fig Installing the PCB Holder and Battery Terminal 24 (7) III-33

56 [ 9 ] Installing the Chassis ASSY (1) Set the chassis ASSY onto the upper cover and secure them with the three screws. (Secure the FG harness onto the chassis ASSY together.) Screws FG harness Chassis ASSY Upper cover Fig Installing the Chassis ASSY (1) III-34

57 (2) Put the DC motor harness into the section A and solder it onto the main PCB. (3) Put the cutter motor harness into the section B and solder it onto the main PCB. Red Black Section A DC motor harness Section B Cutter motor harness Main PCB Black Red Fig Installing the Chassis ASSY (2) Note: When replacing the main PCB or thermal head, change the solder points on the main PCB according to the head rank of the thermal head. (Refer to 3.6 TEST MODE.) III-35

58 (4) Put the harness of the photo interrupter into the section C. (5) Connect the photo interrupter connector into the main PCB. (6) Connect the full cutter sensor connector into the main PCB. (7) Connect the head ASSY flat cable into the main PCB. Chassis ASSY Head ASSY flat cable Section C Photo interrupter connector Full cutter sensor connector Main PCB Fig Installing the Chassis ASSY (3) (8) Put the power supply harness into the section D. (9) Connect the power supply harness connector into the main PCB. Power PCB ASSY Power supply harness connector Rib Section D Main PCB Fig Installing the Chassis ASSY (4) III-36

59 [ 10 ] Installing the Battery Terminal (1) Set the two battery terminals into the bottom cover. Battery terminal Bottom cover Fig Installing the Battery Terminal [ 11 ] Installing the Blind Cover (1) Set the blind cover while aligning it with the three pins provided on the bottom cover. Blind cover Pins Bottom cover Fig Installing the Blind Cover III-37

60 [ 12 ] Installing the Bottom Cover (1) Secure the bottom cover onto the upper cover with the five screws. Screws Bottom cover Fig Installing the Bottom Cover [ 13 ] Installing the Cassette Cover (1) Set the cassette cover onto the machine. Cassette cover Rib Machine Rib Fig Installing the Cassette Cover III-38

61 [ 14 ] Loading the Tape Cassette (1) Load the tape cassette into the machine and close the cassette cover. [ 15 ] Loading the Batteries and Installing the Battery Lid (1) Load the batteries and set the battery lid onto the machine. Battery Lid Fig Loading the Batteries and Installing the Battery Lid III-39

62 3.6 TEST MODE When replacing the main PCB, always make sure to implement the adjustment and check following the steps described in this section. (Other test modes than the ones described below are not used.) Start the test mode following the procedures below: 1. When the machine is turned off, press the [ON/OFF] key while pressing the [Space] and [BS] keys so that the machine is reset. 2. When the machine is turned off, keep pressing the [ON/OFF] key for approximately 3 seconds while pressing the [Space] and [Setup] keys so that the test mode is started. Note: If any problem is occurred after implementing the test modes below, follow the procedures described in 3.7 TROUBLESHOOTING FOR THE TEST MODE. [ 1 ] Tape Feed Adjustment (1) Remove the bottom cover from the machine. (2) Set the print setting as follows: - Length setting: 300 mm (The print pattern is optional.) - Margin setting: Yes (3) Press the [Print] key, and adjust the time from starting to completing printing by turning the adjustment bolt on the main PCB so that it is set to 28.5 to 31.5 seconds. Main PCB Fig. 1 Adjustment bolt (4) Set the bottom cover onto the machine. III-40

63 [ 2 ] Solder Point Check (1) Check the alphabet (A, B or C) stamped on the flat cable of the head ASSY. Head ASSY Flat cable Fig. 2 (2) Check the main PCB and solder the same point (A, B or C) as the solder point. (Ex.) If B is stamped on the flat cable, solder the B point on the main PCB. Solder point B Fig. 3 Main PCB (3) Start the test mode and press the [1] key to check the solder point rank indicated on the LCD is correct. Fig. 4 Head rank LCD indication Solder point A B C A HEAD A B HEAD B C HEAD C III-41

64 [ 3 ] Machine Specifications Writing Mode (1) Start the test mode. (2) Press the [2] key so that the machine shows the following on the LCD. Fig. 5 (3) Press the [OK] or [Enter] key so that the machine shows the following on the LCD. Fig. 6 (4) Press the [1] to [5] key and select the machine specifications. (5) Press the [OK] or [Enter] key to set the machine specifications. [ 4 ] LCD Indication Check (1) Start the test mode. (2) Press the [3] key so that the machine shows the following on the LCD. Fig. 7 (3) Check the display to make sure that the LCD indication is normal. (The display will be changed whenever pressing the [OK] or [Enter] key.) (4) When the LCD CONTRAST SET is indicated, implement the following operation: Adjust the contrast of the LCD by pressing the [ ] or [ ] key, then press the [OK] or [Enter] key. III-42

65 [ 5 ] Cassette Sensor Switch Check (1) Start the test mode. (2) Press the [4] key so that the machine shows the following on the LCD. Fig. 8 (3) Check that 0 indicated on the display below is changed to 1 by pressing the actuator switch. Actuator switch Fig. 9 Cassette sensor PCB [ 6 ] Key Check (1) Start the test mode. (2) Press the [5] key so that the machine shows the following on the LCD. Fig. 10 (3) Load the 24-mm wide laminated tape cassette with the black ribbon into the machine. (4) Press the [OK] or [Enter] key so that the machine enters the stand-by mode. (5) Press the key in order following the display on the LCD. [Print] key Fig. 11 (6) After pressing all keys, check that the pattern below is printed. Printed tape Fig. 12 III-43

66 [ 7 ] Print Check (1) Start the test mode. (2) Press the [6] key so that the machine shows the following on the LCD. Fig. 13 (3) Load the 24-mm wide laminated tape cassette with the black ribbon into the machine. (4) Press the [OK] or [Enter] key so that the machine starts printing the pattern below. At this time, make sure that it is printed correctly. Fig. 14 [ 8 ] Cutting Check (1) Start the test mode. (2) Press the [7] key so that the machine shows the following on the LCD. Fig. 15 (3) Load the 24-mm wide laminated tape cassette with the black ribbon into the machine. (4) Check that the machine can feed and cut the tape correctly whenever pressing the [OK] or [Enter] key. Fig. 16 III-44

67 [ 9 ] Encode Reading Check (1) Start the test mode. (2) Press the [E] key so that the machine shows the following on the LCD. Fig. 17 (3) The machine enters the encode reading check mode. (4) Press the [OK] or [Enter] key and check that OK is indicated on the LCD. Fig. 18 [ 10 ] Serial Number Writing Mode (1) Start the test mode. (2) Press the [U] key so that the machine shows the following on the LCD. Fig. 19 (3) Press the [0], [0], [2] and [4] keys in this order so that the machine shows the display to enter the USB serial number. Fig. 20 (4) Enter 9 digits of the machine serial number attached on the bottom of the machine. (5) Press the [OK] or [Enter] key. III-45

68 3.7 TROUBLESHOOTING FOR THE TEST MODE [ 1 ] Solder Point Check Mode [ 2 ] LCD Indication Check Mode III-46

69 [ 3 ] Cassette Sensor Switch Check Mode III-47

70 [ 4 ] Key Check Mode III-48

71 III-49

72 [ 5 ] Print Check Mode [ 6 ] Cut Check Mode III-50

73 III-51

74 [ 7 ] Encode Reading Check Mode III-52

75 [ 8 ] DC Motor Rotation Adjustment Mode III-53

76 CHAPTER IV TROUBLESHOOTING 4.1 OVERVIEW 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. However, those samples will help service personnel pinpoint and repair other defective elements if he/she analyzes and examines them well Precautions Be sure to observe the following precautions to prevent the secondary problems from happening during troubleshooting: (1) Get a good idea of what the trouble is. Whenever more than one trouble source is found, plan the most reasonable repairing procedure after reviewing the relationship between them. (2) When supplying power to this machine having problems from either a set of dry cells or the optional AC adapter, make sure that its output voltage level is 8 to 13V under no load. (3) When supplying power from a stabilized power unit, use the power unit with approx. 3A capacity and choose the output level of 8 to 13V. When connecting it to this machine, be careful with the polarity. (4) When using a circuit tester for testing the conductivity, remove all of the dry cells and the AC adapter from this machine After Repairing After repairing the defective section, be sure to check again (Refer to 3.6 TEST MODE.) to see if the repaired section works correctly. Also make a note of the troubleshooting procedure so that it will be handy should problems occur in the future. 4.2 TROUBLESHOOTING GUIDE If any of the following problems occurs: - Tape feeding failure - Printing failure - Powering failure (Nothing appears on the LCD and the backlight does not light.) - No key entry possible - Tape cutting failure - Interface port failure - LCD indication error or backlight error - Tape cassette type not identified Go to Section 4.3. IV - 1

77 4.3 TROUBLESHOOTING FLOWS [ 1 ] Tape feeding failure IV - 2

78 IV - 3

79 [ 2 ] Printing failure IV - 4

80 IV - 5

81 [ 3 ] Powering failure (Nothing appears on the LCD and the backlight does not light.) IV - 6

82 IV - 7

83 [ 4 ] No key entry possible [ 5 ] Tape cutting failure IV - 8

84 [ 6 ] Interface port failure [ 7 ] LCD indication error or backlight error IV - 9

85 [ 8 ] Tape cassette type not identified IV - 10

86 May, V2372BE0 Printed in Japan