Service manual

Chapter 1
General Description
Features
...........................................................................................
l-l
Specifications
...................................................................................
1-3
Hardware Specifications
............................................................
l-3
Firmware Specifications (ESCYP)
...............................................
l-9
Parallel Interface
.............................................................................
1-14
DIP Switches and Jumpers
..............................................................
1-18
DIP Switches
..............................................................................
l-18
Jumpers
.....................................................................................
l-20
Operating Instructions
....................................................................
1-21
SelecType
...................................................................................
1-21
Self Test
.....................................................................................
1-21
Demonstration
...........................................................................
l-22
Hexadecimal Dump Function
....................................................
l-23
Bit Image Printing
....................................................................
l-24
Error Conditions ........................................................................
1-25
Buzzer Operation
.......................................................................
l-25
Printer Initialization
.................................................................
1-26
Default Values
...........................................................................
l-27
Head Adjust Lever..
................................................................... 1-28
Printhead Protection During Heavy Duty Printing..
............... 1-29
Main Components
............................................................................
l-29
CO64 MAIN PCB
.......................................................................
l-30
Control Panel PCB
....................................................................
l-30
PEBFIL-II PCB ..........................................................................
1-31
Transformer
...............................................................................
1-31
Model 5ClO Printer Mechanism
................................................
1-32
Housing
......................................................................................
1-33
Chapter 2
Principles of Operation
Overview
..........................................................................................
2-l
Connector Summary
..................................................................
2-l
Overview of Printer Mechanism Operation
.............................. 2-3
Circuit Overview
........................................................................
2-7
Firmware Overview
...................................................................
2-8
Principles of Operation
....................................................................
2-9
Power Supply Circuit
.................................................................
2-9
Reset Circuit ..............................................................................
2-25
Address Decoder and Bank Register
.........................................
2-29
Carriage Operation
...................................................................
2-30
Paper Feeding
...........................................................................
2-43
Printhead
...................................................................................
2-47
A/D Converter Circuit
...............................................................
2-52
Host Interface
............................................................................
2-55
Ribbon Feed Mechanism
............................................................
2-56
LQ200/AP3000
V