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MX-80 IIIF/T
Technical manual
Epson MX-80 Technical Manual
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Also See for MX-80
:
Operation manual
(103 pages)
,
User manual
(99 pages)
,
Technical manual
(85 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Chapter 1
Features of Interfaces
Serviceability
Printer
Parallel Interface (Standard)
Major Components
Fig. 1.2 Main and Driver Circuit Boards
Fig. 1.3 Power Supply Circuit
Fig. 1.4 Upper and Lower Cases
Chapter 2
General
Block Diagrams
Fig. 2.1 Flow of Signals
Principles of '::>Peration
Electrical Circuits
Fig.2.2 Component Layout of Fuse & Filter Circuit
Fig. 2.3 Connection Diagram of Fuse Filter Circuit
Fig. 2.4 Windings of Transformer
Fig. 2.8 Data Transfer Sequence
Fig.2.9 Carriage Stepper Motor Drive Signals (Forward)
Fig. 2.10 Paper Feed Stepper Motor Drive Signals
Fig. 2.11 8041 and Peripheral Circuits
Fig. 2.12 Signal ALE
Fig. 2.14 Locations of DIP Switches
Fig. 2.15 DIP Switch Status Read Circuit
Fig. 2.16 Reset (Hpsensor) Circuit
Fig. 2.17 Timing (PTS) Sensor Circuit
Fig. 2.19 Driver Circuit
Fig. 2.20 Current Waveform of Print Head
Operating Principles of Printer Mechanism
Head Carriage and Paper Feeding Mechanisms
Print Head
Ribbon Feeding Mechanism
Fig. 2.24 Operation of Print Head
Detecting Mechanism
Frame Section
Chapter 3 Disassembly, Assembly and Troubleshooting
General
Tools and Measuring Instruments
Disassembly and Assembly
Removal of Upper Case
Fig. 3.2 Removal of 4 Screws
Fig.3.3 Locations of Respective Components
Disassembly of Electric Ciucuit Block
Fig. 3.4 Dismounting of Driver Circuit Board
Fig.3.5 Removal of Control Circuit Board
Fig.3.6 Removal of Power Transformer
Disassembly of M-3210 Printer Mechanism Block
Disassembly of M-321 0 Printer Mechanism Block
Fig. 3.8 Dismounting of M-3210 Printer Mechanism
Fig. 3.11 Unsoldering of Four Lead Wires
Fig. 3.12 Dismounting of PTS Sensor Board Assy
Fig. 3.13 Dismounting of Timing Belt Motor Assy
Fig.3.14 Unsoldering of Lead Wires
Fig. 3.16 Dismounting of PE Board Assy
Symptoms of Trouble and Repair
General
Troubleshooting by Symptom
Troubleshooting of Control Circuit Board
Fig. 3.17 Normal Waveform of Signal PSEN
Chapter 4 Maintenance
General
Lubrication
Lubricants
Lubrication Standards
Bonding Standards
Fig. 4.1 Lube Points and Bonding Points
Adjustments
Adjustment of Head Driving Pulse Width
Fig. 4.2 Applied Voltage Vs. Driving Pulse Width
Adjustment of Timing Pulse Generating Position
Fig. 4.3 Timing Signal PTS (Pin No.39 of 8049)
Fig. 4.4 Relationship between Timing Signal and Signal PRAV
Adjustment of Phase Relationship between Timing Signal and Reset Signal
Fig. 4.7 Adjustment of Home Position Sensor Assy
Chapter 5 Circuit Diagrams
General
Connection Diagrams
Fig. 5.1 Connection Diagram of Control Circuit
Fig.3.7
Fig.5.4 Component Layout of Driver Circuit
Chapter 6 Simple Troubleshooting
General
Troubleshooting
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See also:
Technical Manual
,
Operating Manual
EPSON DOT MATRIX PRINTER
Technical Manual
EPSON
P80000001
REV.
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Table of Contents
Troubleshooting
DISASSEMBLY, ASSEMBLY AND TROUBLESHOOTING
37
Troubleshooting by symptom
53
Troubleshooting of control circuit board
57
SIMPLE TROUBLESHOOTING
74
Troubleshooting
75
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