Brother PT-MT Service-Handbuch - Seite 3

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CHAPTER I SPECIFICATIONS

1.1 Mechanical Specifications................................................................................................I - 1

1.1.1 External Appearance .................................................................................................I - 1

1.1.2 Entry system ..............................................................................................................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

CHAPTER II THEORY OF OPERATION

2.1 Outline of Mechanisms .................................................................................................. II - 1

2.1.1 Print Mechanism ...................................................................................................... II - 1

2.1.2 Platen Setting & Retracting Mechanism................................................................... II - 2

2.1.3 Tape Feed Mechanism ............................................................................................ II - 3

2.1.4 Tape Cutter Mechanism........................................................................................... II - 4

2.1.5 Cutter Safety Lock Mechanism ................................................................................ II - 5

2.2 Outline of Control Electronics ........................................................................................ II - 6

2.2.1 Configuration ........................................................................................................... II - 6

2.2.2 Main PCB................................................................................................................. II - 7

CHAPTER III DISASSEMBLY & REASSEMBLY

3.1 Disassembly Procedure ................................................................................................ III - 2

[ 1 ] Removing the Cassette Cover, Dry Cells, Tape Cassette, and Cutter Unit .............. III - 2

[ 2 ] Removing the Chassis ASSY ................................................................................... III - 3

[ 3 ] Removing the Main PCB .......................................................................................... III - 6

[ 4 ] Removing Battery Terminals P1 and P2................................................................... III - 8

[ 5 ] Removing the Rubber 4 Key, Lens, Dial Sheet, Select Dial, Select Dial Claw,

and Enter Key .......................................................................................................... III - 9

CONTENTS