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Stylus Photo 720
Service manual
Epson Stylus Photo 720 Service Manual
Epson color inkjet printer service manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
About this Manual
Symbols Used in this Manual
Table of Contents
Product Description
Overview
Features
Basic Specification
Printing Specification
Paper Feed Specification
Input Data Buffer
Electric Specification
Environmental Conditions
Reliability
Safety Approvals
Acoustic Noise
CE Marking
Interface Specification
IEEE-1284 Parallel I/F (Forward Channel)
IEEE-1284 Parallel I/F (Reverse Channel)
USB (Universal Serious Bus)
Miscellanea
Preventing Hosts from Data Transfer Time-Out
Interface Selection
IEEE 1284.4 Protocol
Control Specification
Control Panel
Control Switches
Code Page Selection/ Parallel I/F IEEE1284.4 Setting
Special Setting Mode
LED Indications
Initialization
Errors
Paper
Paper Handling
Paper Specification
Printable Area
Ink Cartridge
Physical Specification
Consumables and Options
Operating Principles
Overview
Printer Mechanism
Printhead
Printing Process
Printing Method
Carriage Mechanism
Platen Gap (PG) Adjustment Mechanism
Paper Feeding Mechanism
Paper Loading Mechanism (ASF Unit)
Ink System Mechanism
Pump Unit and CR Lock Mechanism
Capping Mechanism
Ink Sequence
Electrical Circuit Operating Principles
C301PSB/PSE Board
C301MAIN Board
Main Elements
Printhead Driver Circuit
PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit
CR Motor Driver Circuit
Reset Circuit
EEPROM Control Circuit
Sensor Circuit
Troubleshooting
Overview
Unit Level Troubleshooting
Printer Does Not Operate at Power on
Error Is Detected
Failure Occurs During Printing
Printer Does Not Feed Paper Correctly
Control Panel Operation Is Abnormal
Unit Repair (Power Supply Board)
Unit Repair (Control Board)
Unit Repair (Printer Mechanism)
Disassembly and Assembly
Overview
Precautions
Tools
Work Completion Check
Disassembly
Housing Removal
Circuit Board Assembly Removal
Control Panel Removal
Ink Absorber Tray Assembly (Waste Ink Pad) Removal
Printer Mechanism Disassembly
Printhead Removal
Pump Assembly / Cap Assembly Removal
CR Motor Assembly Removal
PF Motor Assembly Removal
ASF Assembly Removal
ASF LD Roller Assembly Removal
LD Roller Assembly Disassembly
CR Assembly Removal
PE Sensor Assembly Removal
PF Roller Assembly Removal
CR HP Sensor Removal
Adjustment
Overview
Required Adjustment
Adjustment
PG Adjustment
Adjustment by Adjustment Program
Adjustment Program
Adjustment Program Installation Procedure
Adjustment Program Initial Setting Screen
Market Destination Check
Head Voltage ID Input
Head Angular Adjustment
Bi-Directional Adjustment
USB ID Check/Input
Head Cleaning
Initial Ink Charge
Protection Counter Check/Clear
Print A4 Pattern
Maintenance
Overview
Cleaning
Service Maintenance
Lubrication
Appendix
Connector Summary
Major Component Unit
EEPROM Address Map
Component Layout
Exploded Diagram
Parts List
Electric Circuit
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SERVICE MANUAL
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SERVICE MANUAL
Color Inkjet Printer
EPSON STYLUS PHOTO 720 / STYLUS PHOTO EX3
SEIJ00001
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Table of Contents
Troubleshooting
Troubleshooting
51
Unit Level Troubleshooting
54
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