Denso AT20B-SM, User Manual, Page: 7 / 109

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SAFETY PRECAUTIONS
Be sure to observe all these safety precautions.

Please READ through these instructions carefully. They will enable you to use the scanner correctly.

Always keep this manual nearby for speedy reference.
Strict observance of these warnings and cautions is a MUST for preventing accidents that could result in bodily
injury and substantial property damage. Make sure you fully understand all definitions of these terms and symbols
given below before you proceed to the text itself.
Alerts you to those conditions that could cause serious bodily injury or death if the
instructions are not followed correctly.
Alerts you to those conditions that could cause minor bodily injury or substantial
property damage if the instructions are not followed correctly.
Meaning of Symbols
A triangle ( ) with a picture inside alerts you to a warning of danger. Here you see the warning for
electrical shock.
A diagonal line through a circle ( ) warns you of something you should not do; it may or may not have
a picture inside. Here you see a screwdriver inside the circle, meaning that you should not disassemble.
A black circle ( ) with a picture inside alerts you to something you MUST do. This example shows that
you MUST unplug the power cord.