Features ...................................................................................................................................................................................... 1-1

General Specifications .............................................................................................................................................................. 1-3

Printing Specifications ...................................................................................................................................................... 1-3

Character Specifications .................................................................................................................................................. 1-4

Paper Specifications ......................................................................................................................................................... 1-5

Paper Roll Feed Mechanism ............................................................................................................................................ 1-9

Journal Paper Take-up Mechanism ................................................................................................................................ 1-9

Auto-cutter ........................................................................................................................................................................ 1-9

Electrical Specifications .................................................................................................................................................... 1-9

Stamp .................................................................................................................................................................................. 1-10

Ink Ribbon ......................................................................................................................................................................... 1-10

Dimensions, Weight, Finish ............................................................................................................................................ 1-11

Environmental Specifications ......................................................................................................................................... 1-11

Reliability ........................................................................................................................................................................... 1-12

Hardware Configuration ......................................................................................................................................................... 1-13

Main Unit Configuration ................................................................................................................................................. 1-13

Main Unit Specifications .................................................................................................................................................. 1-14

Connectors ......................................................................................................................................................................... 1-17

Interface .............................................................................................................................................................................. 1-19

Switches and Buttons ....................................................................................................................................................... 1-27

Functions .................................................................................................................................................................................... 1-31

Error Processing ................................................................................................................................................................ 1-31

Self-test ............................................................................................................................................................................... 1-32

Hexadecimal Dumping .................................................................................................................................................... 1-32

Printing Operation ............................................................................................................................................................ 1-33

Options ....................................................................................................................................................................................... 1-34

AC Adapter (PS-150) ........................................................................................................................................................ 1-34

Journal Lock ...................................................................................................................................................................... 1-34

Chapter 2 Mechanism Configuration and Operating Principles

Printer Mechanism Components ............................................................................................................................................ 2-1

Printer Mechanism Operating Principles .............................................................................................................................. 2-2

Printing Assembly ............................................................................................................................................................. 2-2

Sensor Assemblies ............................................................................................................................................................. 2-4

Paper Feed Assembly ....................................................................................................................................................... 2-9

Slip Paper Assembly ........................................................................................................................................................ 2-12

MICR Reader Assembly (for printers with a MICR reader) (not available for the TM-U950P) ........................... 2-16

Ribbon Feed Assembly .................................................................................................................................................... 2-18

Stamp Assembly (for printers with a stamp assembly) .............................................................................................. 2-19

Auto-cutter Assembly ...................................................................................................................................................... 2-20

Paper Roll Take-up Assembly ........................................................................................................................................ 2-23

Electrical Circuitry Operating Principles .............................................................................................................................. 2-25

Hardware Configuration ................................................................................................................................................. 2-25

Main Board Operating Principle .................................................................................................................................... 2-30

MICR Board Operating Principle (on printers with a MICR reader) (not available for the TM-U950P) ............ 2-49

Rev. A