About This Manual; Symbols Used In This Manual - Epson LQ-570e Service Manual

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of EPSON LQ-570e/LQ-580. 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.
Contents
This manual consists of six chapters and 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
disassembling 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.
APPENDIX
Provides the following additional information for reference:
• Connector pin assignments
• Electric circuit boards components layout
• Exploded diagram
• Electrical circuit boards schematics

About This Manual

Symbols Used in This Manual

Various symbols are used throughout this manual either to provide additional information
on a specific topic or to warn of possible danger present during a procedure or an action. Be
aware of all symbols when they are used, and always read WARNING, CAUTION or
NOTE messages.
W A R N I N G
C A U T I O N
C H E C K
P O I N T
Indicates an operating or maintenance procedure, practice or condition that, if
not strictly observed, could result in injury or loss of life.
Indicates an operating or maintenance procedure, practice, or condition that,
if not strictly observed, could result in damage to, or destruction of
equipment.
May indicate an operating or maintenance procedure, practice or condition
that is necessary to accomplish a task efficiently. It may also provide
additional information that is related to a specific subject, or comment on the
results achieved through a previous action.