Epson FX-870/1170 - Manual (Page 4)

Precautions
Precautionary notations throughout the text are categorized relative to 1) personal injury, and 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.
The precautionary measures itemized below should always be observed when performing repair/
maintenance procedures.
WARNING
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 as dictated for all electronics technicians in their
line of work.
3. When performing testing as dictated within 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 certi-
fied 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. In order to protect sensitive 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 recom-
mended by the manufacturer; introduction of second-source ICs or other
nonapproved components may damage the product and void any appli-
cable Epson warranty.
Epson 170