Agilent Technologies PSA Series Service Manual page 3

The power cord is connected to internal capacitors that may
WARNING
remain live for 5 seconds after disconnecting the plug from it's
power supply.
The detachable power cord is the instrument disconnecting
WARNING
device. It disconnects the mains circuits from the mains supply
before other parts of the instrument. The front panel switch is
only a standby switch and is not a LINE switch (disconnecting
device).
The opening of covers or removal of parts is likely to expose
WARNING
dangerous voltages. Disconnect the product from all voltage
sources before starting to open.
These servicing instructions are for use by qualified personnel
WARNING
only. To avoid electrical shock, do not perform any servicing
unless you are qualified to do so.
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