Epson Stylus C87, Service Manual

Page: 30 / 109

EPSON Stylus C87/C88/D88 Revision A
TROUBLESHOOTING Overview 30
3.1 Overview
This chapter describes how to solve problems.
3.1.1 Specified Tools
This printer does not require any specified tools for troubleshooting.
3.1.2 Preliminary Checks
Before starting troubleshooting, be sure to verify that the following conditions
are all met:
†
The power supply voltage must be within the specification limits. (Measure the
voltage at the wall socket.)
† The power code must be free from damage, short circuit or breakage, or miswiring
in the power code.
† The printer must be grounded properly.
† The printer should not be located in a place where it can be exposed to too high or
low temperature, too high or low humidity, or abrupt temperature change.
†
The printer should not be located near waterworks, near humidifiers, near heaters
or near flames, in a dusty atmosphere or in a place where the printer can be
exposed to blast from an air conditioner.
† The printer should not be located in a place where volatile or inflammable gases
are produced.
† The printer should not be located in a place where it can be exposed to direct rays
of the sun.
† The printer must be located in a well-ventilated place.
† The printer must be placed on a strong and steady level table (without an
inclination larger than five degrees).
† The paper used must conform to the specification.
† There is no error in handling of the printer.
† Check the inside of the printer, and remove foreign matters if any, such as paper
clips, staples, bits of paper, paper dust or toner.
†
Clean the inside of the printer and the rubber rolls.
W A R N I N G
„ Be careful to avoid electric shocks when checking the electrical
circuit boards (C528 MAIN and C528 PSE boards) while the
power is turned on.
„
Touching an FET, transistor or heat sink with one hand while
touching a metal part of the mechanism with the other hand
could result in an electric shock, so carefully avoid this.
„ After initial filling of ink has been repeated several times,
immediate moving or tilting of the printer could result in
leaking of ink that has not been completely absorbed by the
Waste Ink Pad. When initial filling of ink has been repeated
several times, check the ink remaining in the tip of the Waste
Ink Tube and the waste ink not absorbed by the Waste Ink Pad
before moving the printer.
C H E C K
P O I N T
„ Disassembly and reassembly of parts is often required when
identifying the causes of problems. The parts should be
disassembled and re-assembled correctly while referring to
Chapter 4 “DISASSEMBLY/ASSEMBLY” (p.36) so that the
operation and status of each check item can be correctly
verified.
„ Some individual part and units may require adjustment once
they are removed or replaced. If removing or replacing parts
which have specific instructions for adjustment included in
Chapter 4 “DISASSEMBLY/ASSEMBLY” (p.36) , be sure to
make these adjustments after repairing the problem location.