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SERVICE MANUAL
MODEL: PT-1900/1910/1850
PREFACE
This publication is a service manual covering the specifications, general mechanisms, disassembly/reassembly procedure, and troubleshooting and error message of the Brother PT1900/1910/1850. It is intended for service personnel and other concerned persons to accurately and quickly provide after-sale service for our PT-1900/1910/1850. 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 APPENDIX 1.
SPECIFICATIONS GENERAL MECHANISMS DISASSEMBLY & REASSEMBLY PROCEDURE TROUBLESHOOTING AND ERROR MESSAGE CIRCUIT DIAGRAMS
© Copyright Brother 2002 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.
CONTENTS
CHAPTER I SPECIFICATIONS......................................................................... I-1
1.1 MECHANICAL SPECIFICATIONS ........................................................................ I-1 1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 1.2 External Appearance ...................................................................................... I-1 Keyboard........................................................................................................ I-2 Display ........................................................................................................... I-2 Printing Mechanism........................................................................................ I-2 Tape Cassette ................................................................................................ I-3 Tape Cutter .................................................................................................... I-3
ELECTRONICS SPECIFICATIONS ...................................................................... I-10 1.2.1 1.2.2 Character Generator....................................................................................... I-10 Power Supply ................................................................................................. I-10
1.3
KEY COMMANDS FOR SPECIAL FUNCTIONS ................................................... I-10 1.3.1 1.3.2 Initializing ....................................................................................................... I-10 Demonstration Print........................................................................................ I-10
CHAPTER II GENERAL MECHANISMS............................................................ II-1
2.1 MAIN MECHANISM .............................................................................................. II-1 2.1.1 2.1.2 2.1.3 2.1.4 2.1.5 2.1.6 2.2 Print Mechanism ............................................................................................ II-1 Roller Holder ASSY Setting & Retracting Mechanism..................................... II-3 Tape & Ribbon Feed Mechanism.................................................................... II-4 Automatic Tape Cutter Mechanism (PT-1900/1910) ....................................... II-6 Tape Cutter Mechanism (PT-1850)................................................................. II-7 Roller Holder ASSY & Cassette Cover Interlocking Mechanism...................... II-8
OUTLINE OF CONTROL ELECTRONICS ............................................................ II-10 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 Configuration of the Electronic Part ................................................................ II-10 Main PCB....................................................................................................... II-10 Power Supply PCB ......................................................................................... II-10 Cassette Sensor ............................................................................................. II-10 DC Motors ...................................................................................................... II-10 Thermal Print Head ........................................................................................ II-10 i
2.3
MAIN PCB............................................................................................................. II-11 2.3.1 2.3.2 Block Diagram................................................................................................ II-11 Solder Points.................................................................................................. II-12
2.4
POWER SUPPLY PCB ......................................................................................... II-13
CHAPTER III DISASSEMBLY & REASSEMBLY .............................................. III-1
3.1 DISASSEMBLY PROCEDURE.............................................................................. III-1 [1] [2] [3] [4] [5] [6] [7] [8] [9] 3.2 Removing the Battery Lid and Batteries....................................................... III-1 Removing the Tape Cassette and Tape Separator Stick.............................. III-2 Removing the Bottom Cover ....................................................................... III-4 Removing the Cassette Cover, Main Frame ASSY...................................... III-7 Removing the Main PCB Unit and Rubber Key Pad..................................... III-16 Removing the Switch ASSY ........................................................................ III-18 Removing the Blind Cover........................................................................... III-18 Removing the Power Supply PCB ............................................................... III-19 Removing the Battery Terminals ................................................................. III-20
REASSEMBLY PROCEDURE............................................................................... III-21 [1] [2] [3] [4] [5] [6] [7] [8] [9] Installing the Battery Terminals ................................................................... III-21 Installing the Power Supply PCB ................................................................. III-22 Installing the Blind Cover............................................................................. III-24 Installing the Switch ASSY .......................................................................... III-25 Installing the Rubber Key Pad ..................................................................... III-26 Installing the Main PCB Unit ........................................................................ III-27 Installing the Main Frame ASSY.................................................................. III-29 Installing the Bottom Cover ......................................................................... III-37 Installing the Cassette Cover ....................................................................... III-39
[ 10 ] Installing the Tape Cassette and Tape Separator Stick................................ III-40 [ 11 ] Loading Batteries and Installing the Battery Lid ........................................... III-41 [ 12 ] Demonstration Print and Final Check .......................................................... III-42
ii
CHAPTER IV TROUBLESHOOTING AND ERROR MESSAGE ....................... IV-1
4.1 TROUBLESHOOTING .......................................................................................... IV-1 4.1.1 4.1.2 4.1.3 [1] [2] [3] [4] [5] [6] [7] 4.2 Precautions .................................................................................................... IV-1 After Repairing ............................................................................................... IV-1 Troubleshooting Flows.................................................................................... IV-2 Tape feeding failure..................................................................................... IV-2 Printing failure ............................................................................................. IV-4 Powering failure (Nothing appears on the LCD.) .......................................... IV-6 No key entry possible .................................................................................. IV-8 Tape cutting failure...................................................................................... IV-9 Abnormal LCD indication............................................................................. IV-10 Tape cassette type not identified ................................................................. IV-11
ERROR MESSAGE............................................................................................... IV-12 4.2.1 Error Message List ......................................................................................... IV-12
Appendix 1. CIRCUIT DIAGRAMS
Appendix 1.A Appendix 1.B Appendix 1.C Main PCB CIR 1900 (PT-1900/1910) Main PCB CIR 1850 (PT-1850) Sub PCB
iii
CHAPTER I
1.1
1.1.1
SPECIFICATIONS
MECHANICAL SPECIFICATIONS
External Appearance (PT-1900/1910)
(PT-1850)
Fig. 1.1-1 PT-1900/1850
(1) (2)
Dimensions (W x D x H) Weight Machine proper In package
181 x 232.5 x 61.4 mm (7.13" x 9.15" x 2.42") Approx. 800 g Approx. 1.31 kg (PT-1900 (U.S.A./AUS)) Approx. 1.35 kg (PT-1900 (CANADA)/1850) Approx. 2.7 kg (PT-1910/1850cc) (including batteries, a tape cassette, and user's manual)
I-1
1.1.2
Keyboard (1) (2) (3) (4) (5) Entry system Number of alphanumeric and symbol keys Number of function keys Key arrangement Navigation dial (PT-1850) Rubber key pad 39 12 (including "On/Off ( See Fig. 1.1-2. Rotary switch : 24 positions / cycle Set key : 1 ) " key)
1.1.3
Display (1) (2) (3) (4) (5) Display type Display composition Number of indicators Dot size Field-of-view angle adjustment Liquid crystal display (LCD) 16 x 59 dots 20 (See Fig. 1.1-2.) 0.65 mm(25.6 mils) wide by 0.65 mm(25.6 mils) high Fixed by a resistor
1.1.4
Printing Mechanism (1) Print method Thermal transfer onto plastic tapes (laminate tape and non-laminated tape) or special tapes (instant lettering tape, non-laminated thermal film tape, iron-on transfer tape, and porous-stamp tape) (Fixed print head and tape feeding mechanism) (2) (3) Print speed Print head Type Heat generator Size of heating element (4) Character size Character size Size 6 Size 9 Size 12 Size 18 Size 24 Big <12 mm> Size 36 Size 42 Big <18 mm> Height x Width (dots) 1.55 mm x 1.13 mm (11 x 8) 1.97 mm x 1.41 mm (14 x 10) 2.82 mm x 2.12 mm (20 x 15) 4.51 mm x 3.38 mm (32 x 24) 5.92 mm x 4.37 mm (42 x 31) 7.61 mm x 5.64 mm (54x 40) 9.02 mm x 6.77 mm (64 x 48) 10.72 mm x 8.04 mm (76 x 57) 13.54 mm x 10.30 mm (96 x 73) Thermal print head Consists of 112 heating elements vertically aligned (PT-1850 : 128 heating elements) 0.195 mm (7.7 mils) wide by 0.141 mm (5.6 mils) high 10 mm/second (Typical)
* The height and width of the printed character are different depending on characters. The values in the above list refer to the values of `H' of HELSINKI. * The character size indicates the point size. I-2
1.1.5
Tape Cassette (1) (2) Cassette Types of tape cassettes · Laminated tape cassette · Non-laminated tape cassette · Non-laminated thermal film tape cassette · Iron-on transfer tape cassette Iron-on transfer tape and ink ribbon · Stamp tape cassette · Cloth tape cassette (3) Tape size Width Laminate tape Non-laminate tape Iron-on transfer tape Porous-stamp tape Cloth tape Cleaning tape (4) 6, 9, 12, 18 mm 6, 9, 12, 18 mm 18 mm 18 mm 12 mm 18 mm Length 8m (5 m for the fluorescent coating tape) 8m 6m 3m 4m Porous-stamp tape and base paper Cloth tape and ink ribbon Laminate tape, ink ribbon, and adhesive base tape Non-laminate tape and ink ribbon Non-laminated thermal film tape Cartridge type
· Instant lettering tape cassette Instant lettering tape and ink ribbon
Tape cassette packed with the machine Laminated tape cassette containing a 12-mm-wide black ink ribbon, laminate tape, and adhesive base tape
1.1.6
Tape Cutter (1) (2) Tape cutting Cutter unit Automatic cutter (scissors type) (PT-1900/PT1910) Manual cutter (scissors type) (PT-1850) Not user-replaceable
I-3
PT-1900 U.S.A. / CANADA PT-1910 U.S.A.
Fig. 1.1-2 Key Arrangement (1)
I-4
PT-1900
AUSTRALIA
Fig. 1.1-2 Key Arrangement (2)
I-5
PT-1850
FRENCH
Fig. 1.1-2 Key Arrangement (3)
I-6
PT-1850
GERMAN
Fig. 1.1-2 Key Arrangement (4)
I-7
PT-1850
U.K.
Fig. 1.1-2 Key Arrangement (5)
I-8
PT-1850
BELGIUM
Fig. 1.1-2 Key Arrangement (6)
I-9
1.2
1.2.1
ELECTRONICS SPECIFICATIONS
Character Generator (1) Internal characters U.S.A./CAN (PT-1900/1910) U.K./ FRA/ BEL (PT-1850) GER (PT-1850) (2) (3) Internal font Internal memory HELSINKI, BRUSSELS Text buffer File memory 99 characters (PT-1900/1910/1850) 300 characters (PT-1900/1910/1850) 179 characters 198 characters 211 characters
1.2.2
Power Supply (1) Automatic power off Yes Normal mode : 5 min. ± 30 sec.
1.3
1.3.1
KEY COMMANDS FOR SPECIAL FUNCTIONS
Initializing Powering on the machine with both the Code and R keys held down will initialize the machine.
1.3.2
Demonstration Print Pressing the D key with the Code key held down will start demonstration print. (This key command takes effect only when no data is entered.)
I-10
CHAPTER II
2.1
2.1.1
GENERAL MECHANISMS
MAIN MECHANISM
Print Mechanism (1) Structure of Thermal Head This machine uses thermal transfer printing. The thermal print head has a heat generator consisting of 112 heating elements which are vertically aligned as shown in Fig. 2.1-1. Each heating element is 0.195 mm wide by 0.141 mm high.
Fig. 2.1-1 Heat Generator of Thermal Head
(2)
Printing Process When the cylindrical rubber platen is pressed against the thermal print head with the tape* and ink ribbon** sandwiched inbetween, the CPU applies electric power to the selected ones of those 112 heating elements. * Laminate tape when using laminated tape cassettes. Non-laminated tape when using non-laminated tape cassettes. Instant lettering tape when using instant lettering tape cassettes. Non-laminated thermal film tape when using non-laminated thermal film tape cassettes. Iron-on transfer tape when using iron-on transfer tape cassettes. Cloth tape when using cloth tape cassettes.
** When using non-laminated thermal film tape cassettes or stamp tape cassettes, no ink ribbon is sandwiched. [For tape cassettes except non-laminated thermal film tape cassettes and stamp tape cassettes] If the selected heating element(s) generates heat, the ink on the sandwiched ribbon will be melted and transferred to the tape, producing a dot(s) on the tape. The ink ribbon and the tape are advanced and then the next heating cycle is repeated, thus forming a character on the tape. [For non-laminated thermal film tape cassettes] If the selected heating element(s) generates heat, the thermal film tape develops itself to produce a dot on the tape. The tape is advanced and the next heating cycle is repeated, thus forming a character on the tape.
II-1
[For stamp tape cassettes] If the selected heating element(s) generates heat, the porous-stamp tape will be melted so that a pore (pores) will be formed in the tape. The tape is advanced and the next heating cycle is repeated, thus forming a character of pores on the tape. The printed stamp tape can be used as the face of a stamp. When the stamp is pressed against the ink-pad, it will absorb ink through the pores. For laminated tape cassettes, instant lettering tape cassettes, and iron-on transfer tape cassettes, the CPU processes the print data to generate a mirror image so that the printed character can be seen normally when viewed from the other side of the printed face of the tape.
(3)
Character Formation While the DC motor feeds the tape and ink ribbon (only the tape when using non-laminated thermal film tape cassettes or stamp tape cassettes) by 0.141 mm, the thermal head generates heat once. The feed amount is decided by sending each five pulses of the signal as one dot (0.141 mm) when the photo interrupter detects the encode gear assembled onto the motor shaft. The feed amount of 0.141 mm is smaller than the width (0.195 mm) of the heating elements so that the heat generated at one heating cycle will overlap with the next heating cycle. This forms a character having no gap between adjacent printed dots.
II-2
2.1.2
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 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 is pressed perpendicularly against the head ASSY with the tape and ink ribbon (only the tape when using non-laminated thermal film tape cassettes or stamp tape cassettes) sandwiched inbetween under a uniform load by the platen (upper and lower) spring. 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 spring and roller holder lower spring. 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, which shifts the roller holder release rod so that the roller holder ASSY is retracted from the head ASSY, providing you with enough space to replace the tape cassette.
Head ASSY
Laminate tape Adhesive base tape Platen idle gear Tape cassette Ink ribbon
Tape feed roller
Tape feed sub roller Main frame ASSY Roller release lever Shaft Roller holder ASSY (Tape feed) platen gear (Tape feed) sub roller gear Platen upper spring Platen roller Platen lower spring Roller holder release rod
Platen roller
Tape feed sub roller
(Top)
Fig. 2.1-2 Roller Holder ASSY Setting & Retracting Mechanism
II-3
2.1.3
Tape & Ribbon Feed Mechanism This mechanism consists of a DC motor, gear train, and roller holder ASSY. (1) 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 and adhesive base tape when using laminated tape cassettes) inbetween, as described in Subsection 2.1.2. As the DC motor rotates, the rotation is transmitted via the gear train to the tape idle gear (which rotates the tape feed sub roller gear) and the platen idle gear (which rotates the tape feed platen gear). Accordingly, the sandwiched tape and ink ribbon will be advanced. (When a laminated tape cassette is mounted, the sandwiched laminate tape and adhesive base tape and ink ribbon will be advanced together.) The feeding amount of the platen is slighty less than that of the tape feed sub roller.
Adhesive base tape
Transparent laminate tape
Tape feed roller
(Tape feed) sub roller gear Platen idle gear
Head ASSY Roller holder ASSY Platen roller
DC motor
Tape idle gear
Platen idle gear
Main frame ASSY
Fig. 2.1-3 Tape Feeding Mechanism
II-4
(2)
Adhesive Base Tape Feeding (only for laminated tape cassettes) A laminated tape cassette contains both a transparent laminate tape roll and a separate adhesive base tape roll. When a transparent laminate tape and an adhesive base 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 laminate tape is, therefore, sealed up with the adhesive base tape.
(3)
Ink Ribbon Feeding (except for non-laminated thermal film tape cassettes and stamp tape cassettes) 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 feed gear. The difference between the tape feed speeds at the platen 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 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 Head ASSY Platen roller Roller holder ASSY Ribbon drive cam
Ink ribbon
DC motor
Main frame ASSY
Fig. 2.1-4 Ribbon Feeding Mechanism
II-5
2.1.4
Automatic Tape Cutter Mechanism (PT-1900/1910) The cutter ASSY consists of a stationary blade and a movable blade driven by the cutter motor. Upon completion of printing and tape feeding, the CPU activates the cutter motor whose clockwise rotation is transmitted via the idle gears to the cutter moving gear. As the cutter moving gear rotates counterclockwise, its boss "X" (which is fitted in the opening of the movable blade) actuates the movable blade to pivot it around shaft "Y." Consequently, the cutter cuts the printed tape routing through the movable and stationary blades, just like a scissors. After that, the CPU keeps the cutter motor on. When the 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 double gear Stationary blade
Cutter motor Full cutter sensor PRO ASSY Tape "Y" Movable blade Cutter moving gear "X" "Z" Actuator
Fig. 2.1-5 Automatic Tape Cutter Mechanism (PT-1900/1910)
II-6
2.1.5
Tape Cutter Mechanism (PT-1850) The cutter unit consists of a stationary cutter and a movable cutter. Pressing the cutter lever actuates the movable cutter so that the cutter cuts the printed tape routing through the movable and stationary cutters, just like a scissors. Attached to the cutter lever, the cutter sensor arm turns up so that its tip comes into contact with the switch of the cutter sensor circuit on the cutter sensor holder ASSY, stopping printing and tape feeding.
Stationary cutter
Movable cutter Cutter lever
Cutter sensor arm
Switch
Fig. 2.1-6 Tape Cutter Mechanism (PT-1850)
II-7
2.1.6
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 2.1.2 "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
Head ASSY Shaft
Platen roller Tape feed sub roller Main frame ASSY Roller holder ASSY Roller release lever Roller holder release rod
Roller release lever Roller holder release spring
Roller holder release rod (Roller Holder ASSY retracted) (Roller Holder ASSY engaged)
Fig. 2.1-7 Roller Release Lever and Roller Holder Release Rod
II-8
(PT-1900/1910)
Hooked section Cassette cover Cassette cover
(PT-1850)
Hooked section Cassette cover Cassette cover
Fig. 2.1-8 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-9
2.2
2.2.1
OUTLINE OF CONTROL ELECTRONICS
Configuration of the Electronic Part Fig. 2.2-1 shows a block diagram of the control electronics of the PT-1900/1910/1850. The control electronics consists of three printed circuit boards (main PCB, motor PCB, and power supply PCB), a tape feed motor, a cutter motor (PT-1900/1910), and a thermal print head assembly.
2.2.2
Main PCB This manages all the PT-1900/1910/1850 components including an LCD, key pad, two DC motors (PT-1850: One DC motor), and thermal print head. Note: When mounting the chips onto the PCB, use the lead-free solder.
2.2.3
Power Supply PCB This has electrolytic capacitors (as filters for output lines), an AC adapter jack, battery terminal plates, and other related electronic devices to feed power to the control electronics and the DC motors from the AC adapter or batteries. Note: When mounting the chips onto the PCB, use the lead-free solder.
2.2.4
Cassette Sensor This supports the sensors that detect the tape width and ink ribbon type in the tape cassette.
2.2.5
DC Motors This machine has two DC motors (PT-1850: One DC motor). One feeds tape and ink ribbon and the other drives the cutter to cut (PT-1900/1910) the tape.
2.2.6
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.
Fig. 2.2-1 Control Electronics of PT-1900/1910/1850
II-10
2.3
2.3.1
MAIN PCB
Block Diagram Fig. 2.3-1 shows a block diagram of the main PCB. The main PCB consists of the following: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) CPU ROM (Masked) Key contacts matrix and solder points Power ON/OFF circuit and power saving circuit DC motor driver circuit Cutter motor driver circuit (PT-1900/1910) Thermal head drive circuit Voltage detector circuit and temperature sensor circuit Cassette sensor circuit Cutter sensor circuit Oscillator circuit Reset circuit LCD driver circuit Navi dial (PT-1850)
Fig. 2.3-1 Block Diagram of Main PCB
II-11
2.3.2
Solder Points Solder points 1 through 5 customize the machine for the destination. Solder points A through C are used for the individual thermal head properties. The CPU reads the solder point status once in the powering-on sequence to recognize the customization. < Country Display > The country display displays the country specifications as designated by the solder points (1 to 5.) Country Specification LCD Display 1 U.S.A./CAN/AUS U.K. GERMAN FRENCH BELGIUM US UK GE FR BE 2 Solder Points 3 4 5
< Head Rank Display > The head rank display displays the rank as designated by the solder points (A to C.) The rank "B" is difined ad the setting for no soldering. CAUTION: When soldering, use the lead-free solder.
II-12
2.4
POWER SUPPLY PCB
C1 for the logic circuitry and the thermal print head and motor drive sources. Connecting the AC adapter plug with the AC jack J1 cuts off the power fed from the batteries and feeds power from the AC adapter. Fig. 2.4-1 hows the polarity of the AC adapter plug.
Fig. 2.4-1 AC Adapter Plug
II-13
CHAPTER III
3.1
[1]
DISASSEMBLY & REASSEMBLY
DISASSEMBLY PROCEDURE
Removing the Battery Lid and Batteries (1) (2) Turn the machine upside down. Press section "A" of the battery lid to remove, then take out batteries.
Section "A"
Bottom cover Battery lid
Batteries
Bottom cover
Fig. 3.1-1 Removing the Battery Lid and Batteries
III-1
[2]
Removing the Tape Cassette and Tape Separator Stick (1) (2) Place the machine rightside up and open the cassette cover fully. Pull the tape cassette up and out of the machine.
(PT-1900/1910)
Cassette cover
Tape cassette
(PT-1850)
Cassette cover
Tape cassette
Fig. 3.1-2 Removing the Tape Cassette
III-2
(3)
Pull the tape separator stick up.
(PT-1900/1910)
Tape separator stick
Hook
(PT-1850)
Tape separator stick
Hook
Fig. 3.1-3 Removing the Tape Separator Stick
III-3
[3]
Removing the Bottom Cover (1) (2) (3) (4) Close the cassette cover while pressing down section "B". Turn the machine upside down. Remove four screws from the bottom cover. Apply your fingers to the bottom cover and pull it up.
(PT-1900/1910)
Cassette cover Section "B"
Section "B"
Screws
Bottom cover
Screws
Fig. 3.1-4 Removing the Bottom Cover (1) (PT-1900/1910)
III-4
(PT-1850)
Cassette cover
Section "B"
Section "B"
Screws
Bottom cover
Screws
Fig. 3.1-5 Removing the Bottom Cover (1) (PT-1850)
III-5
(5) (6) (7) (8) (9)
Separate the bottom cover from the upper cover. Open the bottom cover to the left as shown below. Discharge the condenser (C1) on the main PCB unit with tool like a flat screwdriver. Disconnect the power supply harness from the main PCB unit. Remove the screw that secures the grounding wire to the main frame ASSY.
(PT-1900/1910)
Bottom cover
Screw Grounding wire
Condenser (C1)
Flat screwdriver Power supply harness Main PCB unit Upper cover (Front) Main PCB unit
(PT-1850)
Bottom cover
Screw Grounding wire
Condenser (C1)
Flat screwdriver Power supply harness Main PCB unit Upper cover (Front) Main PCB unit
Fig. 3.1-6 Removing the Bottom Cover (2)
Note:
Check that the lower feet are tightly attached to the bottom cover without any gaps, peeling-off, or overreaching.
III-6
[4]
Removing the Cassette Cover, Main Frame ASSY CAUTION: During the following job, handle the connectors and harnesses gently so as not to damage them. (1) Take off the cassette cover from the upper cover. The roller release lever will pop up.
Cassette cover
Roller release lever
Upper cover
Fig. 3.1-7 Removing the Cassette Cover
III-7
(2)
Remove the switch ASSY harness which is soldered at 6 places, from the main PCB unit. Note: However, if only the main frame ASSY is removed, the soldered switch ASSY must not be removed.
(PT-1900/1910)
Main frame ASSY
Switch ASSY harness
Upper cover Main PCB unit
(PT-1850)
Main frame ASSY
Switch ASSY harness
Main PCB unit
Upper cover
Fig. 3.1-8 Removing the Main Frame ASSY (1)
III-8
(4)
Disconnect the following harnesses from the main PCB unit. - Cutter motor harness (PT-1900/1910 only) - Full cutter sensor harness (PT-1900/1910 only) - Cutter sensor harness (PT-1850 only)
(5) (6) (7) (8)
Remove the harness the DC motor PCB by melting the solder. - DC motor harness Disconnect the head cable from the main PCB unit. Remove the two screws of the main frame ASSY. Lift the main frame ASSY up and out of the upper cover.
(PT-1900/1910)
Screws
DC motor harness Main frame ASSY
Head cable
Full cutter sensor harness
Cutter motor harness
Upper cover Main PCB unit
Fig. 3.1-9 Removing the Main Frame ASSY (2) (PT-1900/1910)
III-9
(9)
Remove the cutter lever from the upper cover. (PT-1850 only)
(PT-1850)
Screws
DC motor harness
Main frame ASSY
Head cable
Cutter sensor harness
Cutter lever
Main PCB unit
Upper cover
Fig. 3.1-10 Removing the Main Frame ASSY (2) (PT-1850)
III-10
(PT-1900/1910)
Head cable DC motor harness Power supply harness Full cutter sensor harness Cutter motor harness
Main PCB unit
Switch ASSY harness
(PT-1850)
Head cable Power supply harness Cutter sensor harness DC motor harness
Main PCB unit
Switch ASSY harness
Fig. 3.1-11 Removing the Main Frame ASSY (3)
III-11
Disassembling the Main Frame ASSY Removing the roller holder release rod, roller release lever, roller holder ASSY, and head ASSY (1) (2) Remove the retaining ring from the roller holder ASSY. Lift up the roller release lever as shown below and pull up the roller holder ASSY together with the roller release lever and roller holder release rod, making sure that the roller holder release spring does not go flying off. Remove screw from the head ASSY, then take off the ASSY.
Screw Retaining ring Roller holder ASSY Roller holder release spring
(3)
(PT-1900/1910)
Roller release lever
Head ASSY
Roller holder release rod
Main frame ASSY
(PT-1850)
Screw
Retaining ring Roller holder ASSY
Roller holder release spring
Roller release lever
Head ASSY
Roller holder release rod
Main frame ASSY
Fig. 3.1-12 Disassembling the Roller Holder ASSY and Head ASSY
III-12
Removing the DC motor ASSY (1) Remove two screws from the main frame ASSY, then take off the DC motor ASSY.
DC motor ASSY
Screw
Main frame ASSY
Screw
Fig. 3.1-13 Removing the DC Motor ASSY
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Removing the cutter ASSY, cutter motor ASSY, and full cutter sensor PRO ASSY WARNING: Be careful with the cutter blades. (1) (2) Remove screw "a" and take off the cutter ASSY. Remove the washer (by using a pin) and take off the cutter moving gear and cutter double gears. Note: Once deformed excessively, the washer becomes unusable and a new one should have to be put back in. (3) (4) (5) Remove two screws "b" and take off the cutter motor ASSY, taking care not to damage the motor gear. Remove screw "c" and take off the full cutter sensor PRO ASSY. Turn the actuator counterclockwise and remove it from the chassis ASSY 2300.
(PT-1900/1910)
Chassis ASSY 2300
Cutter motor ASSY
Screws "b" Cutter moving gear Washer Screw "c" Full cutter sensor PRO ASSY
Screw "a" Cutter ASSY Cutter double gears Actuator
Fig. 3.1-14 Removing the Cutter ASSY (PT-1900/1910)
III-14
Removing the cutter ASSY and cutter sensor folder ASSY WARNING: Take care not to touch the cutter of the cutter ASSY. (1) (2) (3) (4) Remove screw "a" and take off the cutter sensor folder ASSY. Release the three hooks to remove the cutter sensor arm. Remove the spring. Remove screw "b", and remove the cutter ASSY from the chassis ASSY 1850.
CAUTION: To remove the screw "b", push down the left end of the movable cutter to turn it counterclockwise, taking care not to push it down excessively or let the left end of the spring touch the cutting edge of stationary cutter. (PT-1850)
Chassis ASSY 1850 Cutter ASSY
Hooks
Screw "b" Screw "a"
Cutter sensor folder ASSY
Cutter sensor arm Spring
Stationary cutter
Movable cutter
Screw
Spring
Movable cutter
Screw
Fig. 3.1-15 Removing the Cutter ASSY (PT-1850)
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[5]
Removing the Main PCB Unit and Rubber Key Pad When you handle the PCB, it is recommended that an anti-static mat be used. If you have built up a static charge, touching the PCB without any anti-static control may damage the LSI and other electronic devices. (1) (2) (3) Remove three screws to remove the DC motor PCB from the upper cover. Unhook the two latches to release the main PCB unit. Pull the positions "A" outwards to pull the LCD with the main PCB unit in the direction of the arrow shown in the figure below and remove the main PCB unit.
Screw Screws DC motor PCB (Main PCB) "A" Main PCB unit "A"
(PT-1900/1910)
Latch LCD
Upper cover Latch
(PT-1850)
Screw Screws DC motor PCB (Main PCB) "A" Main PCB unit "A"
Latch LCD
Upper cover Latch
Fig. 3.1-16 Removing the Main PCB Unit and DC Motor PCB (1)
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(4)
Remove the navi dial from the DC motor PCB. (PT-1850)
Navi dial DC motor PCB (Main PCB)
Fig. 3.1-17 Removing the Main PCB Unit and DC Motor PCB (2)
(5) (6)
Lift up the rubber key pad. Remove the emblem from the upper cover. (PT-1900/1910)
(PT-1900/1910)
Rubber key pad
Upper cover Emblem
(PT-1850)
Rubber key pad
Upper cover
Fig. 3.1-18 Removing the Rubber Key Pad
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[6]
Removing the Switch ASSY (1) (2) Remove the switch ASSY harness from "A" position of the upper cover. Remove the switch ASSY from the upper cover by pulling the three pawls outwards.
Switch ASSY
"A"
Upper cover Pawls
Fig. 3.1-19 Removing the Switch ASSY
[7]
Removing the Blind Cover Remove the blind cover from the bottom cover by pulling the three pawls outwards.
Pawl Pawl Blind cover
Pawl
Bottom cover
Fig. 3.1-20 Removing the Blind Cover
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[8]
Removing the Power Supply PCB (1) Remove the positive (+) and negative (-) terminals of the battery power cords from the bottom cover. Note: When handling those terminals, do not grip the cords but the terminal plates. (2) Remove the one screw from the power supply PCB.
Screw Grounding wire
Negative (-) terminal Power supply PCB
Power supply harness
Positive (+) terminal
Bottom cover
Fig. 3.1-21 Removing the Power Supply PCB
III-19
[9]
Removing the Battery Terminals (1) (2) Remove the battery terminal "A" as shown below (left). As shown below (right), remove the battery terminal "B" while pressing section "A" with the tip of a flat screwdriver.
Battery terminal "A"
Battery terminal "B"
Section "A" Flat screwdriver Section "A"
Battery terminal "B"
(Front)
Bottom cover
Fig. 3.1-22 Removing the Battery Terminals
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3.2
[1]
REASSEMBLY PROCEDURE
Installing the Battery Terminals (1) (2) Place the bottom cover upside down and fit battery terminal "A" into the bottom cover as shown below (left). Make sure that pawled sections "A" catches the bottom cover. Fit a battery terminal "B" into the bottom cover as shown below (right).
Battery terminal "A"
Section "A"
Battery terminal "B"
(Front)
Bottom cover
Fig. 3.2-1 Installing the Battery Terminals
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[2]
Installing the Power Supply PCB (1) Fit the positive (+) and negative (-) terminals of the battery power cords into the bottom cover. Note 1: When handling those terminals, do not grip the cords but the terminal plates. Note 2: Route the battery power cords through the two ribs provided on the bottom cover. (Refer to Fig.3.2-3.) (2) Secure the power supply PCB to the bottom cover with one screw. Tightening torque: 294±98 mN·m (3±1 kgf·cm)
Screw Grounding wire
Negative (-) terminal Power supply PCB
Rib
Power supply harness Positive (+) terminal
Rib
Bottom cover
Fig. 3.2-2 Installing the Power Supply PCB (1)
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Fig. 3.2-3 Installing the Power Supply PCB (2)
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[3]
Installing the Blind Cover Fit two holes "A" of the blind cover over the pins provided on the bottom cover and push down the blind cover until pawls "B" catch the hooks on the bottom cover.
Pawl "B" Pawl "B" Blind cover
Holes "A"
Pawl "B"
Hook Hook Pins
Hook
Bottom cover
Fig. 3.2-4 Installing the Blind Cover
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[4]
Installing the Switch ASSY (1) (2) Put the switch ASSY into the upper cover so that the switch ASSY is hooked onto the three pawls of the upper cover completely. Hook the switch ASSY harness into the two ribs on the upper cover.
Switch ASSY
Pawls
Rib
Upper cover
Fig. 3.2-5 Installing the Switch ASSY
(2)
Press and release each of those switch ASSY with your finger to check that they pop up normally.
Switch ASSY
Fig. 3.2-6 Checking the Switch ASSY
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[5]
Installing the Rubber Key Pad (1) (2) Assemble the emblem onto the upper cover. Place the rubber key pad so that it is fitted over the two bosses and two pins provided on the upper cover.
(PT-1900/1910)
Rubber key pad
Pin
Boss
Upper cover Emblem Boss Pin
(PT-1850)
Rubber key pad
Pin
Boss
Upper cover Pin Boss
Fig. 3.2-7 Installing the Rubber Key Pad
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[6]
Installing the Main PCB Unit (1) Put the navi dial onto the DC motor PCB. (PT-1850 only)
Navi dial
DC motor PCB (Main PCB)
Fig. 3.2-8 Installing the Main PCB Unit (1)
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(2) (3) (4)
Pull the positions "A" outwards to put the LCD with the main PCB unit into the position "B". Check that there is no foreign material or dust on the key contacts on the main PCB unit. Note : Make sure that the two latches of the upper cover catch the main PCB unit. Secure the DC motor PCB onto the upper cover with three screws. Note : After reassembling the main PCB unit, ensure that the navi dial is rotated smoothly. (PT-1850 only)
(PT-1900/1910)
Screw Screws DC motor PCB (Main PCB) "A" "B"
"A" Main PCB unit
Latch LCD
Upper cover Latch Screw Screws DC motor PCB (Main PCB) "A" "B"
(PT-1850)
"A" Main PCB unit
Latch LCD
Upper cover Latch
Fig. 3.2-9 Installing the Main PCB Unit (2)
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[7]
Installing the Main Frame ASSY (1) (2) (3) If the main frame ASSY has been disassembled, assemble the components by referring to the following pages. Assemble the cutter lever onto the upper cover. Pull down the roller release lever to the vertical position and set the main frame ASSY onto the upper cover. (For making the following jobs easier, push the roller release lever to the horizontal position.) Secure the main frame ASSY to the upper cover with two screws. Tightening torque: 392±98 mN·m (4±1 kgf·cm) (5) (6) Put the switch ASSY harness into the "A" of the upper cover. Connect the following harnesses to the main PCB unit: - Full cutter sensor harness (PT-1900 only) - Cutter motor harness (PT-1900 only) - Cutter sensor harness (PT-1850 only) (7) Connect the head cable to the main PCB unit. Note: Be sure to route the cutter sensor harness between the cutter motor and the main frame as illustrated below. This will prevent the harness from getting hooked over the boss provided on the bottom cover when reinstalling the bottom cover. (8) Solder the DC motor harness to the DC motor PCB. Note : Be careful to the direction of the motor harness (+),(-) and not to stick out from the designated place when soldering. CAUTION: When soldering, use the lead-free solder.
(4)
III-29
(PT-1900/1910)
Screws
DC motor harness Head cable Main frame ASSY Full cutter sensor harness DC motor harness
"A"
Cutter motor harness
Switch ASSY harness
"A"
Red Black
DC motor harness
+ Upper cover Switch ASSY harness Main PCB unit Main frame ASSY Cutter motor ASSY Head cable DC motor harness Full cutter sensor PRO ASSY
Cutter motor harness
Full cutter sensor harness
Main PCB unit
Switch ASSY harness
Fig. 3.2-10 Installing the Main Frame ASSY (1) (PT-1900/1910)
III-30
(PT-1850)
Screws
DC motor harness Head cable Main frame ASSY Cutter sensor harness DC motor harness Cutter lever "A"
Switch ASSY harness
"A" Cutter lever
Red Black
DC motor harness
+
Upper cover
Switch ASSY harness Main PCB unit Main frame ASSY Cutter sensor
DC motor harness
Head cable
Cutter sensor harness
Power supply harness
Main PCB unit
Switch ASSY harness
Fig. 3.2-11 Installing the Main Frame ASSY (1) (PT-1850)
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(7)
Solder the six switch ASSY harnesses onto the main PCB unit. Note: Be careful to the direction of the switch ASSY harness and not to stick out from the designated place when soldering switch ASSY harness. CAUTION: When soldering, use the lead-free solder.
(PT-1900/1910)
K0 K5 K4 K3 K2 K1 Black Green Red Yellow Blue Orange
Main frame ASSY
Switch ASSY harness
Main PCB unit
Upper cover
(PT-1850)
Main frame ASSY
K0 K5 K4 K3 K2 K1 Black Green Red Yellow Blue Orange
Switch ASSY harness Upper cover
Main PCB unit
Fig. 3.2-12 Installing the Main Frame ASSY (2)
III-32
Assembling the Components of the Main Frame ASSY Installing the full cutter sensor PRO ASSY, cutter motor ASSY, and cutter ASSY (1) (2) (3) (4) (5) Fit the actuator into the hole provided in the chassis ASSY 2300 and turn it clockwise. Secure the full cutter sensor PRO ASSY to the chassis ASSY 2300 with screw "c". Tightening torque: 147±49 mN·m (1.5±0.5 kgf·cm) Secure the cutter motor ASSY with two screws "b" with its harness facing down. Tightening torque: 147±49 mN·m (1.5±0.5 kgf·cm) Set the cutter double gears and cutter moving gear into place, then fit the washer in the cutter moving gear. Secure the cutter ASSY with screw "a" so that the long hole provided in the moving blade becomes fitted over the boss of the cutter moving gear. Tightening torque: 588±98 mN·m (6±1 kgf·cm) WARNING: Be careful with the cutter blades. (6) (7) Make sure that the cutter ASSY is fitted on the side of the chassis ASSY 2300 without any gap. Apply half of a rice-sized pinch of grease (Silicon grease G501) to the boss of the cutter moving gear or the inside edge of the long hole provided in the moving blade.
(PT-1900/1910)
Chassis ASSY 2300
Cutter motor ASSY
Screws "b" Cutter moving gear Washer Screw "c" Full cutter sensor PRO ASSY
Screw "a" Cutter ASSY Apply grease G501 here Cutter double gears
Actuator
Fig. 3.2-13 Installing the Cutter ASSY (PT-1900/1910)
III-33
Installing the cutter sensor folder ASSY and cutter ASSY WARNING: Take care not to touch the cutter of the cutter ASSY. (1) (2) (3) (4) (5) Secure the cutter ASSY to the chassis ASSY 1850 with screws"b". Tightening torque: 588±98 mN·m (6±1 kgf·cm) Hook the spring as shown below. Make sure that the cutter ASSY is fittes on the side of the chassis ASSY 1850 without any gap. Catch the three hooks on the cutter sensor arm onto the cutter ASSY to assemble the cutter sensor arm. Secure the cutter sensor folder ASSY onto the chassis ASSY 1850 with screw "a". Tightening torque: 147±49 mN·m (1.5±0.5 kgf·cm) (PT-1850)
Chassis ASSY 1850
Cutter ASSY
Hooks
Screw "b" Screw "a"
Cutter sensor folder ASSY
Cutter sensor arm
Spring
Movable cutter
Screw
Spring
Fig. 3.2-14 Installing the Cutter ASSY (PT-1850)
III-34
Installing the DC motor ASSY (1) Install the DC motor ASSY to the chassis ASSY with two screws, taking care not to damage the gear. Tightening torque: 147±49 mN·m (1.5±0.5 kgf·cm)
DC motor ASSY
Screw
Chassis ASSY
Screw
Fig. 3.2-15 Installing the DC Motor ASSY
III-35
Installing the head ASSY, roller holder ASSY, and roller holder release rod, roller release lever (1) (2) (3) Secure the head ASSY to the main frame ASSYwith screw. Tightening torque: 490±98 mN·m (5±1 kgf·cm) Apply half of a rice-sized pinch of grease (Silicon grease G501) to the roller holder ASSY (slideway for the roller holder release rod). First fit the roller holder release spring and the assembly of the roller release lever and roller holder release rod onto the roller holder ASSY as shown below. Then install them to the main frame ASSY and set the retaining ring.
Retaining ring Screw Roller holder ASSY Roller holder release spring
(PT-1900/1910)
Roller release lever
Head ASSY
Apply grease G501 here
Roller holder release rod
Main frame ASSY
(PT-1850)
Screw Roller holder ASSY
Retaining ring
Roller holder release spring
Roller release lever
Head ASSY
Apply grease G501 here
Roller holder release rod
Main frame ASSY
Fig. 3.2-16 Installing the Head ASSY and Roller Holder ASSY
III-36
[8]
Installing the Bottom Cover (1) (2) Connect the power supply harness to the main PCB unit. Align the front edge of the bottom cover with that of the upper cover, then push down the bottom cover until it snaps into place. Note: Take care not to pinch the cords between those covers. (PT-1900/1910)
Bottom cover
Screw Grounding wire
Power supply harness
Main PCB unit
Upper cover
(PT-1850)
Bottom cover
Screw Grounding wire
Power supply harness
Main PCB unit
Upper cover
Fig. 3.2-17 Installing the Bottom Cover (1)
III-37
(4)
Secure the bottom cover with four screws. Tightening torque: 392±98 mN·m (4±1 kgf·cm)
(PT-1900/1910)
Screws Bottom cover
Screws
(PT-1850)
Screws Bottom cover
Screws
Fig. 3.2-18 Installing the Bottom Cover (2)
III-38
[9]
Installing the Cassette Cover (1) (2) (3) (4) Place the machine rightside up. Lift up the roller release lever. Hold the cassette cover at an angle shown below and slide down its hinges until they become fitted into the bottoms of the grooves provided in the bottom cover. Close the cassette cover.
(PT-1900/1910)
Hinge Cassette cover "A"
Hinge Roller release lever
Hinge
Upper cover
(PT-1850)
Hinge Cassette cover "A"
Hinge Roller release lever
Hinge Upper cover
Fig. 3.2-19 Installing the Cassette Cover
III-39
[ 10 ] Installing the Tape Cassette and Tape Separator Stick (1) (2) (3) (4) Fully open the cassette cover. The roller release lever pops up. Insert the tape separator stick into the right side of the main body. Load a tape cassette. Close the cassette cover. (The roller holder ASSY will be pressed against the head.)
(PT-1900/1910)
Hook
Tape separator stick Cassette cover
Roller release lever Tape cassette
(PT-1850)
Hook
Tape separator stick Cassette cover
Roller release lever Tape cassette
Fig. 3.2-20 Installing the Tape Cassette and Tape Separator Stick
III-40
[ 11 ] Loading Batteries and Installing the Battery Lid (1) (2) Load batteries. Fit the front end of the battery lid into the bottom cover and push down the lid.
Batteries
Bottom cover
Bottom cover Battery Lid
Fig. 3.2-21 Loading Batteries and Installing the Battery Lid
III-41
[ 12 ] Demonstration Print and Final Check 1. Starting the Inspection Mode First, press the "ON/OFF" key while pressing the "Code" and "R" keys, and release the "ON/OFF" key, then "Code" and "R" keys so that the RAM is cleared, and the machine performs normally. Then, when the power is OFF, press the "ON/OFF" key while pressing the "Code" and "K" keys and release the "ON/OFF" key, then the "Code" and "K" keys so that the machine goes into the inspection mode. (When the machine goes into the inspection mode, the display as shown in Fig.2 appears.) If the following errors occur, take an appropriate action to recover from them. 1.1 Checking the ROM, Temperature and Solder Check the ROM, temperature and solder points. If the ROM is not connected correctly, the "ROM PROBLEM" message is displayed, and the check is finished. If the room temperature is out of the specified range (10°C to 40°C), the "TEMP NG" message is displayed, and the check is finished. If the same kind of two or more solder points is ON, or the solder point is not correct, the message as shown in Fig.1 is displayed, and the check is finished.
Fig. 1
2.
Inspection Mode The mode is used after the machine is repaired or assembled. The mode includes the following nine modes; Information Mode, Key Inspection Mode, Jog Dial Inspection Mode (for PT-1850 only), Cassette Sensor Inspection Mode, Cut Mode, Print 1 Mode, Print 2 Mode, Motor Mode, Voltage Check Mode. For the details on the Motor Mode and Voltage Check Mode, they are omitted in this section because they are not related to the inspection.
Fig. 2
2.1 Information Mode The display as shown in Fig.2 is indicated when the machine goes into the inspection mode, or when the "1" key is pressed. By pressing the " " key in the Information mode, the country and head rank are displayed, and the input power supply is checked.
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2.1.1 Country Display The country display shows the country specification as designated by the solder points (1 to 5). ROM Specification Country Specification U.S.A./CAN/AUS U.K. GERMAN FRENCH BELGIUM 2.1.2 Head Rank Display The head rank shows the rank as designated by the solder points (A to C). The "B" rank is defined as the setting for no soldering. Rank LCD Display A B 0 B A C A C Solder Points B C LCD Display 1 US UK GE FR BE 2 Solder Points 3 4 5
2.1.3 Power Supply Voltage Check Display (Inspection Voltage 9.0±0.1V) The " " mark is displayed if the voltage is in the specified range of the input voltage. If it is out of the specified range, the " " mark is displayed.
Country Specification Head Rank Voltage Check
Fig. 3 Display Example of the Information Mode
2.1.4 LCD Check Display The LCD check 1 as shown in Fig. 4 is displayed when pressing the "
All guidance off
" or "0" key.
Fig. 4
The LCD check 2 as shown in Fig. 5 is displayed when pressing the "
" key.
All guidance on
Fig. 5
III-43
The LCD check 2 as shown in Fig. 6 is displayed by pressing the " (All guidance is ON.)
" key.
All guidance on
Fig. 6
Shift to "2.2. Cassette Sensor Inspection Mode" by pressing the "
" key. (Fig.7 display)
2.2 Cassette Sensor Inspection Mode The display as shown in Fig.7 is indicated by pressing the " Fig.6. " or "2" key in the display of
Fig. 7
Shift to the Key inspection mode by pressing the "
" key. (Fig.8 display)
Fig. 8
The status of the five sensor switches is displayed. ON: 1, OFF: 0 Shift to the Key inspection mode by pressing the " " key. (Fig.9 display)
2.3 Key Inspection Mode 2.3.1 The display as shown in Fig.9 is indicated by pressing the " Fig.8. " or "3" key in the display of
Fig. 9
Shift to the Key inspection mode by pressing the "
" key. (Fig.10 display)
III-44
Press the "Print" key, (1st row) L (5th row) L R in this order.
R, (2nd row) R
L, (3rd row) L
R, (4th row) R
L,
The key to be pressed is displayed on the LCD (Fig.10 display), and the key to be pressed next is displayed if pressing the key correctly. If not, the key to be pressed next and " " mark are displayed. (Fig.11 display)
Fig. 10
Fig. 11
When completing to check all keys, the display as shown in Fig.12 is indicated, and the " mark is printed. (For U.S.A./CANADA/AUSTRALIA model only) For the European models, after implementing the operation described in 2.3.2, the Fig.12 display is indicated, and the " " mark is printed.
"
Fig. 12
2.3.2 Jog Dial Inspection Mode To enter the jog dial inspection mode, do not print the" " mark when "OK" is displayed after all keys are checked, or press the "Jog" key. When rotating the jog dial, the arrow ( , ) is shifted following the direction of the rotation. (Fig.13) First, move the cursor to the left hand side by three points and press the "Set" key. If the left mode performs correctly, it is shifted to the right mode. Check the right mode as well. If the right mode also performs correctly, "OK" is displayed and printed. Then, cut the tape and shift to "2.4. Cut Mode". (Fig.14 display)
Fig. 13
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2.4 Cut Mode The display as shown in Fig.14 is indicated by pressing the " of Fig.13. " key or "4" key in the display
Fig. 14
The display as shown in Fig.15 is indicated by pressing the " " key, and the tape is fed. After the tape is fed, cut the tape automatically (or manually). "CUT 1" is displayed at that time.
Fig. 15
After cutting the tape, the display as shown in Fig.16 is indicated, and the tape is fed. After the tape is fed, cut the tape automatically (or manually).
Fig. 16
After cutting the tape, the display as shown in Fig.17 is indicated, and the tape is fed. After the tape is fed, cut the tape automatically (or manually).
Fig. 17
After cutting the tape, shift to "2.5. Print 1 Mode". (Fig.18 display)
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2.5 Print 1 Mode The display as shown in Fig.18 is indicated by cutting the tape or pressing the "5" key in the display of Fig.17.
Fig. 18
" key. (Fig.18 display) Printing is started by pressing the " After printing, all memory is initialized, and the power is turned OFF.
87.2±4.4mm 61.2±3.1mm
Fig. 19 Print Sample
Check the printed fonts and tape length of the print sample after the tape is cut. If the cut tape is out of the specified range, insert the tip of a flat screwdriver through the hole and rotate the trimmer (VR1) on the DC motor PCB to adjust the tape feeding length. Rotating the VR1 clockwise will shorten the tape feeding length; rotating it counterclockwise will lengthen it.
Hole for adjusting the VR1
Fig. 20
III-47
CHAPTER
IV
TROUBLESHOOTING AND ERROR MESSAGE
4.1 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. However, those samples will help service personnel pinpoint and repair other defective elements if he/she analyzes and examines them well. 4.1.1 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 batteries or the AC adapter, make sure that its output voltage level is 11 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 11 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 batteries and the AC adapter from this machine. 4.1.2 After Repairing After repairing the defective section, be sure to check again (CHAPTER III , [ 12 ] Demonstration Print and Final Check) 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.
IV - 1
4.1.3 Troubleshooting Flows [ 1 ] Tape feeding failure
IV - 2
IV - 3
[ 2 ] Printing failure
IV - 4
IV - 5
[ 3 ] Powering failure (Nothing appears on the LCD.)
IV - 6
IV - 7
[ 4 ] No key entry possible
IV - 8
[ 5 ] Tape cutting failure
IV - 9
[ 6 ] Abnormal LCD indication
IV - 10
[ 7 ] Tape cassette type not identified
IV - 11
4.2 ERROR MESSAGE
4.2.1 Error Message List The error message list is shown as follows. Error Conditions U.K./BELGIUM
When the power is ON (CODE+K): Check system finds any problem in the ROM. (checksum for all ROM data) When the power is ON (CODE+K): The same kind of two or more solder points is ON, or the solder point is not correct. When the power is ON: The wrong adapter which supplies higher voltage is used. When the message is disappeared, the system is turned OFF after approx. two seconds. While printing: The batteries are weak. (The message is displayed after printing.) After the message is disappeared, the machine returns to the text input mode. While feeding the tape: The batteries are weak. (The message is displayed after feeding.) After the message is disappeared, the machine returns to the text input mode. ROM PROBLEM!
FRENCH
PROBLEME ROM!
Display GERMAN
ROM FEHLER!
U.S.A./ AUSTRALIA
ROM PROBLEM!
CANADA
PROBLÈME ROM!
SOLDER
X
SOLDER
X
SOLDER
X
SOLDER
X
SOLDER
X
WRONG ADAPTER!
CHANGER ADAPTATEUR
FALSCHER ADAPTER!
CHANGE ADAPTOR!
CHANGER ADAPTATEUR
BATTERIES WEAK!
PILES USEES!
BATTERIEN SCHWACH!
BATTERIES WEAK!
PILES USÉES!
IV - 12
Error Conditions U.K./BELGIUM
While printing: The batteries are empty. (The message is displayed while printing.) After the message is disappeared, the machine returns to the text input mode. While feeding the tape: The batteries are empty. (The message is displayed while feeding.) After the message is disappeared, the machine returns to the text input mode. When the power is ON: The system is turned OFF while printing. After the message is disappeared, the opening message is displayed. Text input mode: When pressing the normal "Character" key The text buffer memory is full. Text input mode: When pressing the dead "Character" key The text buffer memory is full. Text input mode: When pressing the "Space" key The text buffer memory is full. Text input mode: When pressing the "Return" key The text buffer memory is full. Text input mode: When pressing the "Tab Set" key The text buffer memory is full. Text input mode: When pressing the "Accent" key The text buffer memory is full. Text input mode: When pressing the "Symbol" key The text buffer memory is full. BUFFER FULL! MEMOIRE PLEINE! REPLACE BATTERIES!
FRENCH
REMPLACER PILES!
Display GERMAN
BATTERIEN WECHSELN!
U.S.A./ AUSTRALIA
REPLACE BATTERIES!
CANADA
REMPLACER PILES!
SPEICHER VOLL!
BUFFER FULL!
MÉMOIRE PLEINE!
IV - 13
Error Conditions U.K./BELGIUM
Symbol input mode: When pressing the "Set" key The text buffer memory is full. After the message is disappeared, the machine returns to the text input mode. Symbol input mode: When pressing the "Code+Set" keys The text buffer memory is full. After the message is disappeared, the machine returns to the text input mode. Accent input mode: When pressing the "Set" key The text buffer memory is full. After the message is disappeared, the machine returns to the text input mode. Accent input mode: When pressing the "Code+Set" keys The text buffer memory is full. After the message is disappeared, the machine returns to the text input mode. Function select mode: When pressing the "Set" key A "Symbol" or "Accent" is selected when the text buffer memory is full. After the message is disappeared, the machine returns to the text input mode. Currency data input mode: When pressing the "Set" key When the text buffer memory is full. After the message is disappeared, the machine returns to the text input mode. BUFFER FULL!
FRENCH
MEMOIRE PLEINE!
Display GERMAN
SPEICHER VOLL!
U.S.A./ AUSTRALIA
BUFFER FULL!
CANADA
MÉMOIRE PLEINE!
########## ##########
########## ##########
IV - 14
Error Conditions U.K./BELGIUM
Text input mode: When pressing the "Return" key More than 5 lines are entered. Dead mode: When pressing the "Return" key More than 5 lines are entered. After the message is disappeared, the machine returns to the text input mode. Currency data input mode: When pressing the "Set" key More than 5 lines are entered. After the message is disappeared, the machine returns to the text input mode. Text input mode: When pressing the "Return" key More than 4 lines are entered. Text input mode: When pressing the "Print" key There is no data in the text buffer memory. Text input mode: When pressing the "Length" key There is no data in the text buffer memory. After the message is displayed for 0.5 seconds, the machine enters the fixed length print setting mode. Text input mode: When pressing the "Repeat" key There is no data in the text buffer memory. Text input mode: When pressing the "Number" key There is no data in the text buffer memory. ########## ########## ########## ########## 5 LINE
FRENCH
TROP DE
Display GERMAN
MAX. 5
U.S.A./ AUSTRALIA
########## ##########
CANADA
########## ##########
LIMIT!
LIGNES!
ZEILEN!
########## ##########
4
LINE
TROP
DE
LIMIT!
LIGNES!
BUFFER EMPTY!
MEMOIRE VIDE!
SPEICHER LEER!
BUFFER EMPTY!
MÉMOIRE VIDE!
IV - 15
Error Conditions U.K./BELGIUM
Function select mode: When pressing the "Set" key The "Length" setting is selected when there is no data in the text buffer memory. After the message is displayed for 0.5 seconds, the machine enters the fixed length print setting mode. Function select mode: When pressing the "Set" key The "Repeat" or "Number" setting is selected while there is no data in the text buffer memory. After the message is disappeared, the machine returns to the text input mode. Text input mode: When pressing the "Print" or "Feed (& Cut)" keys The tape cassette is not installed. Text input mode: When pressing the "Length" key The tape cassette is not installed. After the message is displayed for 0.5 seconds, the machine enters the fixed length print setting mode. Print copies select mode: When pressing the "Print" or "Set" keys The tape cassette is not installed. Final number setting mode: When pressing the "Print" or "Set" keys The tape cassette is not installed. TAPE EMPTY! PAS DE BUFFER EMPTY!
FRENCH
MEMOIRE VIDE!
Display GERMAN
SPEICHER LEER!
U.S.A./ AUSTRALIA
########## ##########
CANADA
########## ##########
BAND LEER!
NO TAPE!
PAS
DE
RUBAN!
RUBAN!
IV - 16
Error Conditions U.K./BELGIUM
Function select mode: When pressing the "Set" key The "Length" setting is selected when no tape cassette is installed. After the message is displayed for 0.5 seconds, the machine enters the fixed longth print setting mode. While printing: The tape is cut automatically when no tape cassette is installed. After the message is disappeared, the machine returns to the text input mode. While feeding the tape: The tape is cut automatically when no tape cassette is installed. After the message is disappeared, the machine returns to the text input mode. Text input mode: When pressing the "Print" key The text length is longer than the label length to be set. (The input characters are too many or too big.) Print copies select mode: When pressing the "Print" or "Set" keys The text length is longer than the label length to be set. (The input characters are too many or too big.) After the message is disappeared, the machine returns to the text input mode. TEXT TOO LONG! TROP LONG! TAPE EMPTY!
FRENCH
PAS DE
Display GERMAN
BAND LEER!
U.S.A./ AUSTRALIA
########## ##########
CANADA
########## ##########
RUBAN!
########## ##########
########## ##########
########## ##########
NO TAPE!
PAS
DE
RUBAN!
TEXT LANG!
ZU
TEXT TOO LONG!
TROP LONG!
IV - 17
Error Conditions U.K./BELGIUM
Final number setting mode: When pressing the "Print" or "Set" keys The text length is longer than the label length to be set. (The input characters are too many or too big.) After the message is disappeared, the machine returns to the text input mode. Text input mode: When pressing the "Print" key When two or more lines are input, the text cannot be printed because the i