SMT-H3260 User Guide _1SAFETY CONCERNSThe purpose of the Safety Concerns section is to ensure the safety of users andprevent property damage. Please read this document carefully for proper use.ConventionsWarningProvides information or instructions that you should follow in order to avoidpersonal injury or fatality.CautionProvides information or instructions that you should follow in order to avoid aservice failure or damage to your STB.NoteIndicates additional information for referrence.ChecksProvides the operator with checkpoints for stable system operation.SymbolsCautionIndication of a general cautionRestrictionIndication for prohibiting an action for a productInstructionIndication for commanding a specifically required action