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Installation Guide
Power Supply and Blown Fuses
Disconnection from Supply Source
The power supply of the E4991A is cut off by disconnecting the plug of the power cable
(on either AC outlet side or E4991A side). When it is necessary to disconnect the power
supply in order to avoid shock hazards, etc., pull out the power cable plug from either the
AC outlet side or the E4991A side.
NOTE
To allow this operation to be performed smoothly, be sure to follow the guidelines in
"Ensuring Adequate Free Space around Analyzer for Immediate Disconnection of Power
Cable in Case of Emergency" on page 26.
When turning the power OFF under normal circumstances, always follow the methods
described in "Turning the Power OFF" on page 31.
32
Chapter 2
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