Epson TM-U950 Technical Manual

Rev. A v
TM-U950/TM-U950P Technical Manual
Contents
Chapter 1
Features and General Specifications
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
CONFIDENTIAL

Epson TM-U950 Specifications

General

Print speed	18.6 ips
Character size	1.3 x 3.1 mm
Print technology	Dot matrix
Paper dimensions	210 x 297 mm
Dimensions (WxDxH)	251 x 298 x 194.5 mm
Electromagnetic compatibility	VCCI, FCC, CE
Safety	UL, CSA
Country of origin	China
Mean time between failures (MTBF)	180000 h
Serial interface	Yes
Standard interfaces	RS-232C
Weight (imperial)	12.3 lbs
Pallet width	1200 mm
Pallet height	1000 mm
Pallet length (UK)	2250 mm
Quantity per pallet	24 pc(s)
Quantity per pallet (UK)	36 pc(s)
Quantity per pallet layer	4 pc(s)
Harmonized System (HS) code	84433210
Quantity per pallet layer (UK)	6 pc(s)
Package depth	425 mm
Package width	360 mm
Package height	330 mm
Package weight	7196 g
Quantity per pack	1 pc(s)

Weight and Dimensions

Depth	298 mm
Width	186 mm
Height	195 mm