Epson Stylus Photo 870 Service Manual page 3

EPSON Stylus Photo 870/1270
How to Use This Manual
Before servicing this product, read the precautions on the following
page. Then turn to one of these chapters:
! Chapter 1 Product Basics
Describes the main features of the product and how to use it.
! Chapter 2 Technical Overview
Explains how the product works.
! Chapter 3 Troubleshooting
Tells how to identify and correct common problems.
! Chapter 4 Disassembly And Assembly
Provides step-by-step procedures for disassembling the product.
! Chapter 5 Adjustments
Provides EPSON-approved methods for adjustment.
! Chapter 6 Maintenance
Describes routine maintenance procedures.
! Chapter 7 Appendix
Provides detailed specifications, connector pin assignments,
EEPROM address map, board component layouts, exploded
diagrams, parts lists, and circuit diagrams
Symbols Used in This Manual
W A R N I N G
Warnings must Cautions must
be followed to be followed to
avoid personal avoid damaging
injury or death. the printer.
A D J U S T M E N T
C A U T I O N
R E Q U I R E D
Reassembly notes
provide helpful tips
for reassembling
the printer.
General Precautions
" Before servicing, unplug the printer from the power
W A R N I N G
outlet and disconnect any attached devices.
" No work should be performed by persons unfamiliar with
basic safety measures familiar to trained technicians.
" When performing testing or troubleshooting procedures
described in this manual, do not connect the unit to a
power source unless instructed to do so. When the
power supply cable must be connected. use extreme
caution in working on the power supply board and other
electronic components.
" Repairs on EPSON products should be performed only
C A U T I O N
by an EPSON-certified repair technician.
" Make certain that the source voltage is the same as the
rated voltage listed on the serial number/rating plate. If
the EPSON product has a primary AC rating different
from the available power source, do not connect it to the
power source.
" Always verify that the EPSON product has been
disconnected from the power source before removing or
replacing printed circuit boards and other components.
" To protect sensitive microprocessors and circuitry, use
static discharge equipment, such as anti-static wrist
straps, when accessing internal components.
" Always replace malfunctioning components with EPSON
components. Introduction of second-source ICs or other
nonapproved components may damage the product and
void any applicable EPSON warranty.