TYANO B7109F77DV10E4HR-2T-N, Service Engineer'S Manual, Page: 12 / 310

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documentation. Improper repairs can create a safety hazard.
· Allow the product to cool before removing covers and touching internal
components.
· Remove all watches, rings, or loose jewelry when working before removing
covers and touching internal components.
· Do not use conductive tools that could bridge live parts.
·
Use gloves when you remove or replace system components; they can
become hot to the touch.
·
If the product sustains damage requiring service, disconnect the product
from the AC electrical outlet and refer servicing to an authorized service
provider. Examples of damage requiring service include:
– The power cord, extension cord, or plug has been damaged.
– Liquid has been spilled on the product or an object has fallen into the
product.
– The product has been exposed to rain or water.
– The product has been dropped or damaged.
– The product does not operate normally when you follow the operating
instructions.
·
Retain all screws or other fasteners when removing access cover(s). Upon
completion of accessing inside the product, refasten access cover with original
screws or fasteners.
Separate Protective Earthing Terminal and Earthing Wire
·
This separate protective earthing terminal should be permanently connected
to earth and the protective earthing wire should have conductor size of 6 mm
2
with UL/CSA-approved.
A ground conductor and terminated with a lug
Label with following wording affixed adjacent to the
PSU AC Inlet indicates that the Equipment is with
touch current exceeding 3.5 mA.