Epson FX-1180 - Impact Printer, Service Manual

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EPSON FX-880/FX-1180 Service Manual ix
PRECAUTIONS
Precautionary notations throughout the text are categorized relative to:
1. personal injury.
2. damage to equipment.
WARNING
Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be
exercised in performing procedures preceded by a WARNING heading.
CAUTION
Signals a precaution which, if ignored, could result in damage to equipment.
Always observe the precautionary measures itemized below when performing repair/maintenance
procedures.
WARNING
1. Always disconnect the product from both the power source and host computer before performing any
maintenance or repair procedure.
2. No work should be performed on the unit by persons unfamiliar with basic safety measures dictated for all
electronics technicians in their line of work.
3. In performing testing described in this manual, do not connect the unit to a power source until instructed
to do so. When the power supply cable must be connected, use extreme caution in working on the power
supply and other electronic components.
CAUTION
1. Repairs on EPSON products should be performed only by an EPSON-certified repair technician.
2. 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.
3. Always verify that the EPSON product has been disconnected from the power source before removing or
replacing printed circuit boards and/or individual chips.
4. To protect sensitive µP chip and circuitry, use static discharge equipment, such as anti-static wrist straps,
when accessing internal components.
5. Replace malfunctioning components only with those components recommended by the manufacturer;
introduction of second-source ICs or other nonapproved components may damage the product and void
any applicable EPSON warranty.