About This Manual - Epson 680Pro - LQ B/W Dot-matrix Printer Service Manual

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON Stylus Color 680/777/777i.
The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the
preceding page.
This manual consists of six chapters and one Appendix.
CHAPTER 1.PRODUCT DESCRIPTIONS
Provides a general overview and specifications of the product.
CHAPTER 2.OPERATING PRINCIPLES
Describes the theory of electrical and mechanical operations of the product.
CHAPTER 3.TROUBLESHOOTING
Provides the step-by-step procedures for the troubleshooting.
CHAPTER 4.DISASSEMBLY AND ASSEMBLY
Describes the step-by-step procedures for dissaembling and assembling the product.
CHAPTER 5.ADJUSTMENTS
Provides Epson-approved methods for adjustment.
CHAPTER 6.MAINTENANCE
Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives
required for servicing the product.
APPENDIXProvides the following additional information for reference:
• Connector pin assignments
• Electric circuit boards components layout
• Exploded diagram
• Electrical circuit boards schematics

About This Manual

Contents