Sony CAST-AU4 Operation Manual page 7

Definition of warning symbols
Pay particular attention to the following symbols and conventions shown on the machine and on the
Operation Manual. Fully understand the contents of symbols and conventions before reading the Operation
Manual.
《Machine Symbols》
Indicates a protective terminal of mechanical parts to which an external protective earth wire
is connected.
When the part with this mark is removed, the high voltage appears.
Check the operation manual before using the part with this mark.
《Operation Manual Symbols》
Indicates that mis-operations or mis-handling may result in unexpected danger (fire, etc.,)
and the that operator is at risk (of major injury).
Warning
Indicates that mis-handling may result in unexpected danger (electric shock, etc.,) and that
the operator is at risk of injury or the equipment at risk of damage.
Caution
S-2
Be cautious not to pinch your hands or fingers into the units moving parts.
Before you perform any maintenance and/or check, disconnect the unit from
the main power supply.
CAST-AU4/B2521E