Epson Stylus COLOR 440 Service Manual page 5

EPSON Stylus COLOR 440, 640, and 740
Precautionary notations throughout the text are categorized with respect to: (1) personal injury and (2) damage to equipment.
W A R N I N G Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in
performing a procedure preceded by a WARNING.
C A U T I O N
Signals a precaution which, if ignored, could result in damage to equipment.
Always observe the precautions listed below when performing repair and maintenance procedures.
1. Always disconnect the product from both the power source and the 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.
1. Repairs on EPSON products should be perfomed 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 or
individual chips.
4. To protect sensitive microprocessors and othe 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.
PRECAUTIONS
WARNING
CAUTION
Chapter 1 Product Description
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