Epson TM-U375 - Connecting the Printer to Your Computer

CONTENTS
CHAPTER 7
TM-U375P INFORMATION
FEATURES AND GENERAL SPECIFICATIONS............................... 7-1
Connectors ................................................................................ 7-1
Interface..................................................................................... 7-1
DIP Switches ............................................................................. 7-4
ELECTRICAL CIRCUITRY OPERATING PRINCIPLES .................... 7-5
Component Connection Diagram ............................................ 7-5
Circuit Block Diagram .............................................................. 7-6
Power Supply Circuitry ............................................................ 7-6
Reset Circuit.............................................................................. 7-7
CPU ......................................................................................... 7-7
Gate Array ................................................................................. 7-8
Host Interface Circuit ............................................................... 7-10
Drawer Kick-out Drive Circuit .................................................. 7-10
TROUBLESHOOTING........................................................................ 7-11
ASSEMBLY ........................................................................................ 7-12
Whole Unit Sub-assembly C .................................................... 7-12
Whole Unit Main Assembly 1 ................................................... 7-13
APPENDIX .......................................................................................... 7-14
Main Circuit Board Diagrams................................................... 7-14
Parallel Interface Circuit Board Diagram ................................ 7-16
Main Circuit Board Parts Layout ............................................. 7-17
Parallel Intrface Circuit Board Parts Layout........................... 7-19
Overall Exploded Diagram ....................................................... 7-20
7
CONFIDENTIAL