This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of the FX-850.

The instructions and procedures included herein are intended for the experienced repair technician, and attention should be given to the precautions on the preceding page.

Always disconnect the product from both the power source and the host computer before performing anya maintenance or repair procedure.

No work should be performed on the unit by persons unfamiliar with basic safety measures as dictated for all electronics technicians in their line of work.

When performing testing as dictated within this manual, do not connect the unit to a power supply cable must be connected, use extreme caution in working on power supply and other electronic components.

Always verify that the Epson product has been disconnected from the power source before removing or replacing printerd circuit boards and/or individual chips.

In order to protect sensitive chips and circuitry, use static discharge equipment, such as anti-static wrist straps, when accessing internal components.

Replace malfunctioning components only with those components recommended by the manufactures, indroduction of second source ICS or other nonapproved components may damage the product and void any applicable Epson warranty.

Table of contents Epson FX-8580 Service Manual
  • Provides a general product overview, lists specifications, and illustrates the main components of the printer.
  • Describes the theory of printer operation.
  • Discusses the options
  • Includes a step-by-step guide for product disassembly, assembly, and adjustment.
  • Provides Epson-approved techniques for troubleshooting.
  • Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.
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