Precaution Segment; Safety Precautions - SATO PV4 Service Manual

1. Precaution Segment

1-1 Safety Precautions

1. Make sure that 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.
2. Leakage Current Hot Check:
Use a leakage-current tester or a metering system that complies with American National Standards
Institute (ANSI C101.1, Leakage Current for Applications), and Underwriters Laboratories (UL Publications
UL1410, 59.7). With the unit completely reassembled, plug the AC line cord directly into a 100VAC or
240VAC outlet of the Adaptor.
With the unit's AC switch first in the ON position and then OFF, measure the current between a known
Earth ground (metal water pipe, conduit, etc.) and all exposed metal part, including: metal cabinet, frame,
and screw-heads and printer. The current measure should not exceed 0.1 milliamp. Reverse the power-
plug prong in the AC outlet and repeat the test.
3. Design Alteration Warning:
Never alter or add to the mechanical or electrical design of the printer. Unauthorized alterations might
create a safety hazard. Also any design changes or additions will void the manufacture's warranty.
4. Components, parts and wiring that appear to have overhead or that are otherwise damaged should be
replaced with parts that meet the original specifications. Always determine the cause of damaged or
overheating and correct any potential hazards.
5. 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.
6. Product Safety Notice:
Some electrical and mechanical parts have special safety-related characteristics, which might not 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.
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.
Ver. 1.00
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PV4