Overview; Specified Tools; Preliminary Checks - Epson Stylus C58 Service Manual

Epson Stylus C58/C59/ME 2/C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21

3.1 Overview

This chapter describes how to solve problems.
Be careful to avoid electric shocks when checking the electrical
W A R N I N G
circuit boards (C664 MAIN, PSE and B circuit 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.
Disassembly and reassembly of parts is often required when
C H E C K
identifying the causes of problems. The parts should be
P O I N T
disassembled and re-assembled correctly while referring to
DISASSEMBLY/ASSEMBLY (p31)
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
DISASSEMBLY/ASSEMBLY
adjustments after repairing the problem location.

3.1.1 Specified Tools

This printer does not require any specified tools for troubleshooting.
TROUBLESHOOTING
so that the operation and
(p31), be sure to make these
Overview

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 electrical outlet.)
The power cable must be free from damage, short circuit, or breakage, and must
not be miswired.
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 present.
The printer should not be located in a place where it can be exposed to direct
sunlight.
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).
Be sure to use papers that conform to the specifications.
There should be no errors 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 rollers.
Revision E
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