Epson Stylus Photo 720 Manuals

Epson Stylus Photo 720 Manuals

Manuals and User Guides for Epson Stylus Photo 720. We have 1 Epson Stylus Photo 720 manual available for free PDF download: Service Manual

Epson Stylus Photo 720 Service Manual

Epson Stylus Photo 720 Service Manual (154 pages)

Epson Color Inkjet Printer Service manual

Brand: Epson | Category: Printer | Size: 12.93 MB

Table of Contents

About this Manual
4
Symbols Used in this Manual
4
Table of Contents
6
Product Description

8
Overview

9
- Features
  9
Basic Specification

10
- Printing Specification
  10
- Paper Feed Specification
  11
- Input Data Buffer
  11
- Electric Specification
  11
- Environmental Conditions
  12
- Reliability
  12
- Safety Approvals
  12
- Acoustic Noise
  12
- CE Marking
  12
Interface Specification

13
Control Specification

18
- Control Panel
  18
- Control Switches
  18
  - Code Page Selection/ Parallel I/F IEEE1284.4 Setting
    19
  - Special Setting Mode
    20
- LED Indications
  20
- Initialization
  21
- Errors
  21
Paper

22
- Paper Handling
  22
- Paper Specification
  22
- Printable Area
  24
- Ink Cartridge
  26
Physical Specification

27
Consumables and Options

28
Operating Principles

29
Overview

30
- Printer Mechanism
  30
- Printhead
  32
  - Printing Process
    33
  - Printing Method
    34
- Carriage Mechanism
  35
  - Platen Gap (PG) Adjustment Mechanism
    35
- Paper Feeding Mechanism
  36
- Paper Loading Mechanism (ASF Unit)
  37
- Ink System Mechanism
  39
  - Pump Unit and CR Lock Mechanism
    39
- Capping Mechanism
  40
- Ink Sequence
  41
Electrical Circuit Operating Principles

42
- C301PSB/PSE Board
  42
- C301MAIN Board
  44
  - Main Elements
    45
  - Printhead Driver Circuit
    45
  - PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit
    47
  - CR Motor Driver Circuit
    48
  - Reset Circuit
    48
  - EEPROM Control Circuit
    49
  - Sensor Circuit
    50
Troubleshooting

51
Overview

52
Unit Level Troubleshooting

54
Unit Repair (Power Supply Board)

57
Unit Repair (Control Board)

58
Unit Repair (Printer Mechanism)

60
Disassembly and Assembly

64
Overview

65
- Precautions
  65
- Tools
  65
- Work Completion Check
  66
Disassembly

67
- Housing Removal
  68
- Circuit Board Assembly Removal
  69
- Control Panel Removal
  71
- Ink Absorber Tray Assembly (Waste Ink Pad) Removal
  72
- Printer Mechanism Disassembly
  73
  - Printhead Removal
    73
  - Pump Assembly / Cap Assembly Removal
    75
  - CR Motor Assembly Removal
    77
  - PF Motor Assembly Removal
    78
  - ASF Assembly Removal
    80
  - ASF LD Roller Assembly Removal
    82
  - LD Roller Assembly Disassembly
    87
  - CR Assembly Removal
    88
  - PE Sensor Assembly Removal
    90
  - PF Roller Assembly Removal
    91
  - CR HP Sensor Removal
    93
Adjustment

94
Overview

95
- Required Adjustment
  95
Adjustment

96
- PG Adjustment
  96
Adjustment by Adjustment Program

98
- Adjustment Program
  98
- Adjustment Program Installation Procedure
  98
- Adjustment Program Initial Setting Screen
  99
- Market Destination Check
  100
- Head Voltage ID Input
  101
- Head Angular Adjustment
  103
- Bi-Directional Adjustment
  106
- USB ID Check/Input
  109
- Head Cleaning
  110
- Initial Ink Charge
  111
- Protection Counter Check/Clear
  111
- Print A4 Pattern
  113
Maintenance

114
Overview

115
- Cleaning
  115
- Service Maintenance
  116
- Lubrication
  117
Appendix

121
Connector Summary

122
- Major Component Unit
  122
- EEPROM Address Map
  125
Component Layout

129
Exploded Diagram

131
Parts List

139
Electric Circuit

149

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