Brother PT-H100 Service Manual
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Brother PT-H100 Service Manual

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SERVICE MANUAL
MODEL: PT-H100/H105

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Summary of Contents for Brother PT-H100

  • Page 1 SERVICE MANUAL MODEL: PT-H100/H105...
  • Page 2 This publication is a service manual covering the specifications, theory of operation, disassembly/reassembly procedure, and troubleshooting of the Brother PT-H100/H105. It is intended for service personnel and other concerned persons to accurately and quickly provide after-sale service for our PT-H100/H105.

  • Page 3: Table Of Contents

    CONTENTS CHAPTER I SPECIFICATIONS 1.1 Mechanical Specifications ......................I-1 1.1.1 External Appearance ......................I-1 1.1.2 Keyboard ..........................I-1 1.1.3 Display..........................I-1 1.1.4 Printing Mechanism......................I-2 1.1.5 Tape Cassette........................I-2 1.1.6 Tape Cutter ..........................I-2 1.2 Electronics Specifications......................I-4 1.2.1 Character Generator......................I-4 1.2.2 Power Supply........................I-4 1.3 Key Commands for Special Functions ..................I-5 1.3.1 Initializing..........................I-5 1.3.2 Inspection Mode ........................I-5 CHAPTER II THEORY OF OPERATION...
  • Page 4 [ 3 ] Installing the Battery Spring Plus / Minus ..............III-16 [ 4 ] Installing the Cassette Sensor PCB ASSY, Frame ASSY and Cutter Lever....III-17 [ 5 ] Installing the Battery Terminal B and Terminal Press Cover ........III-21 [ 6 ] Assembling the Frame Cover and Bottom Cover, and Installing the Board and Cutter Case ASSY............

  • Page 5: Chapter I Specifications

    CHAPTER I SPECIFICATIONS 1.1 Mechanical Specifications 1.1.1 External Appearance 110 mm (4.4") 59 mm (2.4") Figure 1.1-1 External Appearance (1) Dimensions (W x D x H) 110 x 208 x 59 mm (4.4 x 8.2 x 2.4 inches) (incl. keys, cutter lever and bottom feet) (2) Weight - Machine proper Approx.

  • Page 6: Printing Mechanism

    1.1.4 Printing Mechanism (1) Print system Thermal transfer onto plastic and fabric tapes (Fixed thermal print head and tape feed mechanism) (2) Print speed 20 mm/second (3) Print head - Type Thermal print head - Heat generator Consists of 64 heating elements vertically aligned in 180 dpi - Size of a heating element 0.18 mm wide by 0.127 mm high...
  • Page 7 USA version EUROPE version Figure 1.1-2 Display and Key Arrangement I - 3...

  • Page 8: Electronics Specifications

    1.2 Electronics Specifications 1.2.1 Character Generator (1) Internal characters (2) Internal fonts HELSINKI, BELT, DOT (3) Text buffer Max. 80 characters (DECO MODE, Auto Designs: Max. 50 characters) (4) File memory 9 files (5) Memory backup No dedicated backup battery is provided. However, the memory is backed up for 5 minutes even after: 1) you remove the dry cells (e.g., at the replacement time of dry cells) without connection of the optional AC adapter*.

  • Page 9: Key Commands For Special Functions

    1.3 Key Commands for Special Functions 1.3.1 Initializing Inside RAM is cleared by pressing [Menu] + [R] + [ON/OFF] simultaneously at power-off state. 1.3.2 Inspection Mode After inside RAM is cleared, enter the factory inspection mode by pressing [SPACE] + [BS] + [ON/OFF] simultaneously at power-off state.

  • 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 uses direct thermal printing. The thermal print head has a heat generator consisting of 64 heating elements, which are vertically aligned in 180 dpi as shown in Figure 2.1-1.

  • Page 11: Roller Holder Assy Setting & Retracting Mechanism

    2.1.2 Roller Holder ASSY Setting & Retracting Mechanism This mechanism consists of the roller holder ASSY and the holder cam (provided on the cassette cover). The cassette cover has a holder cam on the inside. Closing the cassette cover causes its holder cam to press section “A” as shown below. This pivots the roller holder ASSY around the shaft provided on the frame ASSY so as to press the roller holder ASSY against the thermal head side.
  • Page 12 The roller holder ASSY supports the platen roller and tape feed sub roller so that they can move perpendicularly to the thermal head and tape feed roller built in a tape cassette, respectively, as well as rotating freely. Closing the cassette cover presses the platen roller perpendicularly against the thermal head with the tape and the ink ribbon sandwiched inbetween under a uniform load by the upper and lower roller holder springs.

  • Page 13: Cassette Sensor Mechanism

    2.1.3 Cassette Sensor Mechanism Move the cassette sensor to the side of the tape cassette with the cassette sensor cam on the cassette cover by closing the cassette cover. Cassette cover Cassette sensor cam Figure 2.1-5 Cassette Sensor Cam on the Cassette Cover Cassette sensor cam Tape cassette Cassette sensor...
  • Page 14 The locking boss on the cassette sensor holder enters the locking boss hole on the tape cassette, and the cassette sensor switches are held down according to the holes on the tape cassette. (The cassette sensor turns ON when the sensor switches that correspond to the sections without holes are held down.) The tape cassette type and width are determined depending on the pattern that the cassette sensor switches are held down.

  • Page 15: Tape & Ribbon Feed Mechanism

    2.1.4 Tape & Ribbon Feed Mechanism This mechanism consists of a DC motor, gear train, and roller holder ASSY. ■ Tape Feeding As the DC motor rotates, the rotation is transmitted via the gear train to the platen idle gear (which rotates the platen roller gear) and tape idle gear (which rotate the tape feed roller and its sub roller at the same rotation speed).
  • Page 16 ■ Ink Ribbon Feeding As the DC motor rotates, the ribbon drive cam located at the middle of the gear train rotates counterclockwise. When fitted on the ribbon drive cam, the ribbon take-up roll in the tape cassette also rotates to take up the ink ribbon. To apply proper tension to the ink ribbon between the platen and the ribbon drive cam, the feed amount of the ribbon drive cam is slightly greater than that of the tape idle gear.

  • Page 17: Tape Cutter Mechanism

    2.1.5 Tape Cutter Mechanism The tape cutter ASSY consists of a cutter case ASSY and board. Pressing the cutter lever pushes out the cutter blade against the board, cutting the printed tape coming through the cutter case ASSY and board. Tape cassette Cutter case ASSY Board...

  • Page 18: Cutter Safety Lock Mechanism

    2.1.6 Cutter Safety Lock Mechanism When the cassette cover is opened, the roller holder ASSY is retracted from the thermal head with the roller holder release spring (as described in Section 2.1.2). In this retracted position, the cutter lever stopper of the roller holder ASSY blocks the end of the cutter lever, preventing the cutter blade from getting driven for safety, as shown below.

  • Page 19: Cutter Jam Prevention Mechanism

    2.1.7 Cutter Jam Prevention Mechanism When the machine is printing or feeding tape, pressing the cutter lever turns on the cutter sensor switch and immediately stops the DC motor. This prevents the cutter blade from interrupting the tape being fed and causing a tape jam. Tape Cutter blade Board...

  • Page 20: Outline Of Control Electronics

    2.2 Outline of Control Electronics 2.2.1 Configuration Figure 2.2-1 shows a block diagram of the control electronics of this machine. The control electronics consists of three PCBs (main PCB, key PCB and cassette sensor PCB), an LCD, DC motor, thermal print head and cutter sensor. ■...

  • Page 21: Main Pcb

    DC motor Cassette sensor PCB Main PCB Cutter sensor Relay harness Thermal head Key PCB (Key contacts) (black) Negative (-) battery terminal (red) Positive (+) battery terminal * Only H105 is equipped with a J1. AC adapter (option) Figure 2.2-1 Configuration of the Electronic Part II - 12...

  • Page 22: 1 ] Block Diagram

    2.2.2 Main PCB [ 1 ] Block Diagram Figure 2.2-2 shows a block diagram of the main PCB. The main PCB consists of the following: (1) CPU (2) DC motor driver (3) Thermal head driver (4) Oscillation circuit (5) Solder points (6) Power supply circuit (7) Key detector circuit (8) Voltage detector circuit...

  • Page 23: 2 ] Identification Of Tape Cassette Type

    [ 2 ] Identification of Tape Cassette Type The cassette sensor PCB has three sensor switches (1, 2 and 3). Loading a tape cassette turns on some of those switches while keeping others 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.

  • Page 24: Chapter Iii Disassembly & Reassembly

    CHAPTER III DISASSEMBLY & REASSEMBLY ■ Safety Precautions (1) You should carry out disassembly & reassembly jobs on an anti-static sheet grounded correctly. Otherwise, the LSI and other electronic devices will 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 25: Disassembly/Reassembly

    3.1 Disassembly/Reassembly 3.1.1 Disassembly Procedure [ 1 ] Removing the Cassette Cover, Tape Cassette, Dry Cells and Cassette Panel (1) Turn the machine upside down. (2) Press section “A” of the cassette cover to release the hook, then remove the cassette cover.
  • Page 26 (4) Release the two hooks on cassette cover to remove the cassette panel from the cassette cover. Cassette panel Hooks Cassette cover Figure 3.1-2 Removing the Cassette Panel III - 3...

  • Page 27: 2 ] Removing The Cutter Case Assy And Board, And Separating The Upper Cover From The Bottom Cover

    [ 2 ] Removing the Cutter Case ASSY and Board, and Separating the Upper Cover from the Bottom Cover (1) Pull out the cutter case ASSY and board. (2) Remove the six screws from the bottom cover. (3) Discharge the capacitor mounted on the power PCB ASSY by touching the + and - terminals at the same time with a tweezers.
  • Page 28 (4) Turn the machine right side up and gently open the upper cover. NOTE: Do not pull the frame cover away from the bottom cover. Those covers are connected with leads and harness. (5) Remove the screw, and then remove the FG harness from the frame ASSY. (6) Disconnect the head flat cable from the main PCB ASSY.

  • Page 29: 3 ] Removing The Terminal Press Cover And Battery Terminals B

    [ 3 ] Removing the Terminal Press Cover and Battery Terminals B CAUTION: When handling the PCBs, put on a grounding wrist band. Failure to do so might break LSIs and other electronic devices. (1) Press the two hooks on the terminal press cover inwards from the bottom of the bottom cover with the tip of a flat screwdriver and push out the terminal press cover.

  • Page 30: 4 ] Removing The Frame Assy, Cutter Lever And Cassette Sensor Pcb Assy

    [ 4 ] Removing the Frame ASSY, Cutter Lever and Cassette Sensor PCB ASSY (1) Remove the two screws, and then remove the frame ASSY from the bottom cover. (2) Remove the cutter lever from the bottom cover. (3) Remove the cutter lever spring from the cutter lever. Screws Cassette sensor harness Frame ASSY...
  • Page 31 (4) Remove the screw, and then remove the sensor frame 12 ASSY from the frame ASSY. (5) Remove the retaining ring E2 to remove the cassette sensor spring and the cassette sensor holder from the sensor frame 12 ASSY. (6) Release the two hooks to remove the sensor hold pin from the cassette sensor holder.
  • Page 32 ■ Disassembling the Frame ASSY 1) DC motor ASSY Remove the two screws, and then remove the DC motor ASSY from the frame ASSY. 2) Roller holder ASSY Remove the retaining ring E2 to remove the roller holder ASSY, and the roller holder release spring from the frame ASSY.
  • Page 33 3) Gears Remove the washer 1.6 and the double gear 1 from the frame ASSY. Remove the retaining ring E2, and remove the double gear 3, double gear 2, idle gear and tape idle gear from the frame ASSY. Remove the retaining ring E2, and remove the ribbon drive cam from the frame ASSY.

  • Page 34: 5 ] Removing The Battery Spring Plus / Minus

    [ 5 ] Removing the Battery Spring Plus / Minus (1) Turn the Bottom cover upside down. (2) Pull out the three battery spring plus / minus from the grooves on bottom cover with the tip of a flat screwdriver. Flat screwdriver Battery spring plus / minus Groove...

  • Page 35: 6 ] Removing The Cutter Sensor Assy, Main Pcb Assy And Key Pcb Assy

    [ 6 ] Removing the Cutter Sensor ASSY, Main PCB ASSY and Key PCB ASSY (1) Remove the screw, and then remove the sensor hold plate and the cutter sensor ASSY from the frame cover. (2) Unlock the lock on main PCB ASSY to disconnect the LCD flat cable. NOTE: Do not pull the LCD flat cable or jumper lead wires.

  • Page 36: 7 ] Removing The Upper Cover, Rubber 54 Key And Lcd

    [ 7 ] Removing the Upper Cover, Rubber 54 Key and LCD (1) Remove the rubber 54 key from the upper cover. (2) Release the four hooks to remove the upper cover from the frame cover. (3) Release the two hooks to remove the LCD from the frame cover. Rubber 54 key Hooks Frame cover...

  • Page 37: Reassembly Procedure

    3.1.2 Reassembly Procedure [ 1 ] Installing the LCD and Rubber 54 Key (1) Set the LCD to the frame cover, and then secure it with the two hooks. (2) Set the upper cover to the frame cover, and then secure it with the four hooks. (3) Set the rubber 54 key to the frame cover.

  • Page 38: 2 ] Installing The Main Pcb Assy, Key Pcb Assy And Cutter Sensor Assy

    [ 2 ] Installing the Main PCB ASSY, Key PCB ASSY and Cutter Sensor ASSY (1) Connect the LCD flat cable to the connector on the main PCB ASSY, and lock it. (2) Set the main PCB ASSY and key PCB ASSY to the frame cover, and then secure it with the two screws.

  • Page 39: 3 ] Installing The Battery Spring Plus / Minus

    [ 3 ] Installing the Battery Spring Plus / Minus (1) Set the three battery spring plus / minus to the bottom cover. Battery spring plus / minus Bottom cover Figure 3.1-15 Installing the Battery Spring Plus / Minus III - 16...

  • Page 40: 4 ] Installing The Cassette Sensor Pcb Assy, Frame Assy And Cutter Lever

    [ 4 ] Installing the Cassette Sensor PCB ASSY, Frame ASSY and Cutter Lever ■ Assembling the Frame ASSY 1) Gears Set the ribbon drive gear. Set the ribbon drive cam. Then fit the straight end of the ribbon clutch spring into the slit of the ribbon drive gear.
  • Page 41 2) Holder ASSY Set the roller holder release spring to the boss on roller holder ASSY, and hang the “A” of roller holder release spring on the groove of roller holder ASSY. And insert the roller holder ASSY to the shaft of frame ASSY, and hang the “B” of roller holder release spring on the notch part of frame ASSY, and then secure them with the retaining ring E2.
  • Page 42 (1) Set the cassette sensor PCB ASSY to the cassette sensor holder, and then secure it with the hook. (2) Set the sensor hold pin to the cassette sensor holder, and then secure it with the two hooks. (3) Insert the cassette sensor holder and the cassette sensor spring into the shaft of sensor frame 12 ASSY, and secure them with the retaining ring E2.
  • Page 43 (5) Hang the end “A” of the cutter lever spring on the groove of the cutter lever, and set the cutter lever spring to the boss of the cutter lever. (6) Hang the “B” of the cutter lever spring on the rib of the frame cover. (7) Insert the shaft on frame ASSY into the cutter lever and the bottom cover, and set them to the bottom cover.

  • Page 44: 5 ] Installing The Battery Terminal B And Terminal Press Cover

    [ 5 ] Installing the Battery Terminal B and Terminal Press Cover (1) Set the - battery terminal (black) and the two battery terminals B to the terminal press cover. (2) Set the + battery terminal (red) to the bottom cover. (3) Set the terminal press cover to the bottom cover, and hang the two hooks of the terminal press cover on the bottom cover.

  • Page 45: 6 ] Assembling The Frame Cover And Bottom Cover, And Installing The Board And Cutter Case Assy

    [ 6 ] Assembling the Frame Cover and Bottom Cover, and Installing the Board and Cutter Case ASSY (1) Solder the four cassette sensor leads and the two motor leads to the main PCB ASSY. (2) Connect the power supply harness and the head flat cable to the main PCB. (3) Set the FG harness to the frame ASSY, and then secure it with the screw.
  • Page 46 NOTE: Make sure that the harness, flat cable, and leads are routed as shown below. Cassette sensor leads Head flat cable Motor leads Slit Main PCB ASSY Cutter sensor leads Frame ASSY Slit Slits - battery terminal lead Slits harness Terminal press cover Key PCB ASSY + battery terminal lead...
  • Page 47 (5) Turn the bottom cover upside down. (6) Secure the bottom cover to the frame cover with six screws. (7) Set the board and cutter case ASSY to the bottom cover. Screws Screws Board Cutter case ASSY Bottom cover Figure 3.1-23 Installing the Board and Cutter Case ASSY III - 24...

  • Page 48: 7 ] Installing The Cassette Panel

    [ 7 ] Installing the Cassette Panel (1) Set the cassette panel to the cassette cover, and secure it with the two hooks on cassette cover. Cassette panel Hooks Cassette cover Figure 3.1-24 Installing the Cassette Panel III - 25...

  • Page 49: 8 ] Installing The Dry Cells, Tape Cassette And Cassette Cover

    [ 8 ] Installing the Dry Cells, Tape Cassette and Cassette Cover (1) Set the six dry cells and the tape cassette to the bottom cover. (2) Set the two latches of the cassette cover to the two positioning parts of bottom cover, and close the cassette cover.

  • Page 50: Final Check And Inspection Mode

    3.2 Final Check and Inspection Mode ■ Before factory inspection <Note> - After starting the factory inspection, the memory is initialized when the power is OFF and ON again. - Regarding the printing at the factory inspection, the setting is as same as "Margin Narrow Setting".

  • Page 51: Factory Inspection Mode

    3.2.2 Factory Inspection Mode This mode is for shipping inspection at factories. S E T H 1 0 0 Figure 3.2-1 LCD Display of Factory Inspection Mode Automatically LCD display at Inspection Mode shift Remarks mode transition at factory inspection to SET H100 Write Setting mode (Figure...

  • Page 52: Write Setting Mode ([1] Key) : Perform At Production

    3.3 Write Setting Mode ([1] key) : Perform at Production 3.3.1 Head Rank Set Mode Press the [ENTER] key at the state of <Figure 3.2-1>, and the <Figure 3.3-1> will be displayed. H E A D 2 : B Head Rank Figure 3.3-1 Write Head Rank Mode The head rank will be displayed in the <Figure...

  • Page 53: Country Set Mode

    3.3.2 Country Set Mode Press the [ENTER] key at the state of <Figure 3.3-1>, and the <Figure 3.3-2> will be displayed. 1 : U S A Figure 3.3-2 Write Country Mode The country will be displayed in the <Figure 3.3-2>. In this screen, the country can be selected by pressing the [1] to [4] key, and the indication is changed simultaneously.

  • Page 54: Check Lcd Indication Mode

    3.3.3 Check LCD Indication Mode Press the [ENTER] key at the state of <Figure 3.3-2>, and the LCD contrast adjustment <Figure 3.3-3> will be displayed. L C D C O N T Figure 3.3-3 Contrast Adjustment Switch the value to "-4, -3, -2, -1, 0, +1, +2, +3, +4" by pressing the [<] key or [>] key. (When the indication is dark, select the "-".
  • Page 55 If no problems on contrast adjustment and LCD check 1~3, press the [ENTER] key and shift to the INFORMATION mode <Figure 3.4-1>. If there are any problems on contrast adjustment and LCD check 1~3, press the [BS] key and return to the LCD CONTRAST setting indication mode <Figure 3.3-3>.

  • Page 56: Information Mode ([2] Key) : Perform At Production

    INFORMATION Mode ([2] key) : Perform at Production Press the [ENTER] key or the [2] key at the state of <Figure 3.3-6>, and <Figure 3.4-1> will be displayed. I N F O H 1 0 0 Figure 3.4-1 INFORMATION Mode Indication After press the [ENTER] key, Keyboard spec indication, Head rank indication and Input power check are performed at the INFORMATION Mode, then <Figure...

  • Page 57: Inspect Cassette Sensor Mode ([3] Key) : Perform At Production

    3.5 Inspect Cassette Sensor Mode ([3] key) : Perform at Production Press the [ENTER] key or [3] key at the state of <Figure 3.4-2>, and <Figure 3.5-1> will be displayed. C S T Figure 3.5-1 Inspect Cassette Mode Indication Press the [ENTER] key at the state of <Figure 3.5-1>, and <Figure...
  • Page 58 Shift to <Figure 3.5-4> by pressing / releasing the cassette sensor 2. In the same way, press / release the cassette sensor 3 and the cutter sensor in this order. C S T 3 Figure 3.5-4 C S T C Figure 3.5-5 When the NG is judged in any sensor, <Figure...
  • Page 59 (Example) 001 A 1 : USA First line (001): PCB identification No. (Not similar part code) First line (A): Head rank Second line (1USA): Vary from keyboard specification Figure 3.5-8 Print Example P r i n t i n g . . . * When change the country spec registration to the country except U.S., display by the language after change.

  • Page 60: Inspect Key Mode ([4] Key) : Not Perform At Production

    3.6 Inspect Key Mode ([4] key) : Not Perform at Production Press the [4] key, and <Figure 3.6-1> will be displayed. K E Y Figure 3.6-1 Key Mode Indication Shift to "Inspect key mode" by pressing the [Enter] key. (Display <Figure 3.6-2>.) Press the [Menu] key to start checking key.
  • Page 61 Figure 3.6-5 Key Depressing Order III - 38...

  • Page 62: Print 1 Mode ([5] Key) : Perform At Production

    3.7 PRINT 1 Mode ([5] key) : Perform at Production <Figure 3.7-1> will be displayed after completion of printing <Figure 3.5-9>, or by pressing the [5] key. Before this inspection, set the "12 mm laminate black ink ribbon TZe tape cassette". P R N 1 Figure 3.7-1 PRINT 1 Mode Indication Start the printing by pressing the [Enter] key.

  • Page 63: Cut Mode ([6] Key) : Perform At Production

    3.8 CUT Mode ([6] key) : Perform at Production <Figure 3.8-1> will be displayed after completion of printing <Figure 3.7-2>, or pressing the [6] key. Before this inspection, set the "12 mm PET cleaning cassette". Since this inspection implies cleaning head before shipping, avoid PRINT from this mode when possible.
  • Page 64 Also, at CUT inspection, the cutter error indication is checked for the cutter error detection check by operating cutter lever while feeding. When the cutter error is detected, <Figure 3.8-5> will be displayed. C u t t e r E r r o r * When change the country spec registration to the country except U.S., display by the language after change.

  • Page 65: Motor Mode ([8] Key) For Dc Motor Rotation Adjustment : Perform At Production

    MOTOR Mode ([8] key) for DC Motor Rotation Adjustment : Perform at Production Display <Figure 3.9-1> by pressing the [8] key. M T R Figure 3.9-1 MOTOR Mode Indication Start functioning (MOTOR rotation) by pressing the [Enter] key. Be sure to start at the state of roller released. Open the cassette cover.

  • Page 66: Chapter Iv Troubleshooting

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

  • Page 67: Error Messages

    4.3 Error Messages The table given below lists error messages that can appear on the LCD. Error Messages English Brazil Portuguese Spanish Rumanian French Slovenian Croat Slovakian Meaning Italian Finnish Hungarian Swedish Dutch Turkey Norwegian Czech Polish Danish Portuguese German The installed batteries are getting Eng: Low Battery!
  • Page 68 Error Messages English Brazil Portuguese Spanish Rumanian French Slovenian Croat Slovakian Meaning Italian Finnish Hungarian Swedish Dutch Turkey Norwegian Czech Polish Danish Portuguese German There is no text, symbols or bar Eng: No Text! Bra: Sem texto! code data entered when you try to Spa: ¡Sin texto! Rum:...
  • Page 69 Error Messages English Brazil Portuguese Spanish Rumanian French Slovenian Croat Slovakian Meaning Italian Finnish Hungarian Swedish Dutch Turkey Norwegian Czech Polish Danish Portuguese German The length of the label to be Eng: Text Limit! Bra: Texto longo! printed using the text entered is Spa: Lím.

  • Page 70: Troubleshooting Flows

    4.4 Troubleshooting Flows [ 1 ] Tape feeding failure The tape is not fed through. Replace the tape cassette with a new one, then try printing again. End of repair. Normal tape feeding? The old tape cassette may be defective. Is there any foreign Clean them up.
  • Page 71 Does the cutter Replace the cutter sensor work sensor ASSY. normally? (Solder its leads to the main PCB with lead-free solder.) Are the cutter Correct them with sensor leads soldered lead-free solder. correctly? Does the Replace the cassette cassette sensor work sensor ASSY.

  • Page 72: 2 ] Printing Failure

    [ 2 ] Printing failure The tape is fed normally but no printing occurs. Replace the dry cells with new ones. Is the printing normal? End of repair. Are the thermal If the platen roller or thermal print head is stained, clean it head and platen roller with a head cleaning tape or cotton swab.
  • Page 73 If there is any foreign material on the thermal print head, Any faintly clean it up. printed character? Check that the platen roller is set into place and works normally. If the printed characters become faint in cycles, the tape feed sub roller gear in the roller holder ASSY may be deformed.

  • Page 74: 3 ] Powering Failure (Nothing Appears On The Lcd

    [ 3 ] Powering failure (Nothing appears on the LCD.) Pressing the key does not turn the machine on; nothing appears on the LCD. When driven by dry cells: When driven via the optional AC adapter*: Are the specified dry cells loaded? Replace them with the * AD-24ES (alkaline batteries:...
  • Page 75 Replace the dry cells with new ones and press the key. AD-24ES (only H105) Remove the dry cells and connect Power supplied? the specified AC adapter* Power supplied ? End of repair. The AC jack* on the key PCB may be defective.

  • Page 76: 4 ] No Key Entry Possible

    [ 4 ] No key entry possible No key entry is possible. (Or, no correct key entry is possible.) Any dust or foreign Clean the key contacts material on the key or replace the rubber keypad. contacts? Replace the main PCB ASSY. Enter the inspection mode (see Section 3.2) and do the following for the new main PCB ASSY:...

  • Page 77: 5 ] Tape Cassette Type Not Identified

    [ 5 ] Tape cassette type not identified The tape cassette type cannot be identified correctly. Does each sensor cassette sensor PCB actuator on the cassette sensor is defective. Replace it. PCB work normally? Are the Correct them with cassette sensor leads lead-free solder.

  • Page 78: Appendix 1 Main Pcb Circuit Diagram

    Appendix 1 Main PCB Circuit Diagram MAIN PCB CIRCUIT NAME DIAGRAM PT-H100 (1/2) CODE LAA711-001 A - 1...
  • Page 79 MAIN PCB CIRCUIT NAME DIAGRAM PT-H100 (2/2) CODE LAA711-001 A - 2...

  • Page 80: Appendix 2 Key Pcb Circuit Diagram

    Appendix 2 Key PCB Circuit Diagram KEY PCB CIRCUIT NAME DIAGRAM PT-H100 CODE LAA712-001 A - 3...
  • Page 81 Jul. 2012 SM-PT051...

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