Sam4s ER-5100 II SERIES, Руководство по обслуживанию

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SAM4S ER-5100II SERIES 1-1
1 Precaution Statements
Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as
electrical shock.
1-1 Safety Precautions
1.
Be sure that all of the built-in protective devices are
replaced. Restore any missing protective shields.
2. When reinstalling the chassis and its assemblies, be
sure to restore all protective devices, including
nonmetallic control knobs and compartment covers.
3. Make sure there are no cabinet openings through
which people-particularly children-might insert
fingers and contact dangerous voltages.
Such openings include excessively wide cabinet
ventilation slots and improperly fitted covers and
drawers.
4. Design Alteration Warning:
Never alter or add to the mechanical or electrical
design of the ECR. Unauthorized alterations might
create a safety hazard. Also, any design changes or
additions will void the manufacturer’s warranty.
5. Components, parts and wiring that appear to have
overheated or that are otherwise damaged should be
replaced with parts that meet the original
specifications. Always determine the cause of
damage or over- heating, and correct any potential
hazards.
6. Observe the original lead dress, especially near the
following areas: sharp edges, and especially the AC
and high voltage supplies. Always inspect for
pinched, out-of-place, or frayed wiring. Do not
change the spacing between components and the
printed circuit board. Check the AC power cord for
damage. Make sure that leads and components do
not touch thermally hot parts.
7. Product Safety Notice:
Some electrical and mechanical parts have special
safety-related characteristics which might be obvious
from visual inspection.
These safety features and the protection they give
might be lost if the replacement component differs
from the original - even if the replacement is rated
for higher voltage, wattage, etc.
Components that are critical for safety are indicated
in the circuit diagram by shading, (
) or ( ).
Use replacement components that have the same
ratings, especially for flame resistance and dielectric
strength specifications. A replacement part that
does not have the same safety characteristics as the
original might create shock, fire or other hazards.