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NovaJet 500/630/700 Series 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
NovaJet 500/630/700 Printers General Block Diagram .............................................. 2-1
Paper (Media) Axis Drive ..........................................................................................2-3
The Carriage Axis Drive............................................................................................. 2-4
Media Feed and Take-Up System ............................................................................. 2-5
Main Printed Wiring Assembly (MPWA) ................................................................... 2-6
Microprocessor ..................................................................................................2-7
Gate Array .........................................................................................................2-7
Memory Circuits ................................................................................................. 2-8
Flash EEPROM ........................................................................................... 2-8
DRAM .......................................................................................................... 2-9
Serial EEPROM......................................................................................... 2-10
Stepper Motor Controller................................................................................... 2-10
Servo Motor Controller ...................................................................................... 2-12
Interface Circuits: Serial & Parallel ................................................................... 2-14
Carriage Assembly Circuits ....................................................................................2-15
Control Panel .......................................................................................................... 2-16
Power Supply ......................................................................................................... 2-17
Beeper and Fans .................................................................................................... 2-17
Chapter 3 Maintenance ........................................................................ 3-1
Introduction ............................................................................................................... 3-1
Scheduled Maintenance ........................................................................................... 3-1
Cleaning Procedures ..........................................................................................3-2
External Cleaning......................................................................................... 3-2