ENCAD T-200 Service Manual Page 8

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viii
ENCAD T-200 and T-200+ Service Manual
Table of Contents
Chapter 1 General Description ............................................................ 1-1
Introduction ............................................................................................................... 1-1
Overview ................................................................................................................... 1-3
Related Publications .......................................................................................... 1-3
Electrostatic Discharge (ESD) Sensitivity ................................................................. 1-3
Warnings, Cautions and Notes ................................................................................. 1-4
Printer Specifications ................................................................................................ 1-5
Contents of this Service Manual ................................................................................ 1-6
Technical Support ..................................................................................................... 1-8
Chapter 2 Theory of Operation ............................................................ 2-1
Introduction ............................................................................................................... 2-1
T-200/T-200+ Printer General Block Diagram ............................................................. 2-1
Paper (Media) Axis Drive .......................................................................................... 2-3
The Carriage Axis Drive............................................................................................. 2-4
Main Printed Wiring Assembly (MPWA) ................................................................... 2-5
Microprocessor .................................................................................................. 2-6
Gate Array ......................................................................................................... 2-6
Memory Circuits ................................................................................................. 2-7
Flash EEPROM ........................................................................................... 2-7
DRAM .......................................................................................................... 2-8
Serial EEPROM ........................................................................................... 2-8
Stepper Motor Controller..................................................................................... 2-9
Servo Motor Controller ...................................................................................... 2-11
Control Panel ................................................................................................... 2-13
Interface Circuits: Serial & Parallel ................................................................... 2-14
Carriage Assembly Circuits..................................................................................... 2-15
Display Assembly ................................................................................................... 2-16
Power Supply ......................................................................................................... 2-17
Fan Operation ......................................................................................................... 2-17
Chapter 3 Maintenance ........................................................................ 3-1
Introduction ............................................................................................................... 3-1
Scheduled Maintenance ........................................................................................... 3-1
Cleaning Procedures .......................................................................................... 3-2
External Cleaning......................................................................................... 3-2
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