3.1
Handling Precautions
Read the Safety Precautions
Safety Precautions
If you are using the GS820 for the first time, make sure to read “Safety Precautions” on
pages vi to x.
Do Not Remove the Case
Do not remove the case from the instrument. Some sections inside the instrument have
high voltages that are extremely dangerous. For internal inspection and adjustment,
contact your nearest YOKOGAWA dealer.
Unplug If Abnormal Behavior Occurs
If you notice any symptoms of trouble such as unusual odors or smoke coming from the
instrument, immediately turn OFF the power switch and unplug the power cord. If these
symptoms occur, contact your nearest YOKOGAWA dealer.
Correct the Problem If Output Is Forcibly Turned OFF
If the GS820 detects an internal circuit error due to an excessive external input or
oscillation in the GS820, the GS820 forcibly turns OFF the output, turns ON the ERROR
key, and displays the error message “Hardware input abnormal error.” If this happens,
remove the cause of the problem such as the load connected externally, and turn the
output ON again. If the output still turns OFF after correcting the problem, the GS820
may have malfunctioned. Contact your nearest YOKOGAWA dealer. Note that the error
display remains until you manually clear it (see section 11.7, “Error Log Display”) or read
the error information via communications even if the GS820 recovers.
Turn the Power Switch OFF If Overheat Is Detected
If the GS820 detects an overheat condition such as when the inlet or vent holes for the
cooling fan are obstructed or the fan is stopped, the GS820 forcibly turns the output
OFF and displays an “Abnormal Temperature” warning. If this happens, immediately
turn OFF the power switch. Provide adequate space around the GS820 or check and
remove foreign objects caught in the cooling fan on the rear panel. If the same warning
appears when you turn ON the power switch after waiting a substantial amount of time,
the GS820 may have malfunctioned. Contact your nearest YOKOGAWA dealer.
Turn the Power Switch OFF If Overload Is Detected
If the internal power supply is overloaded due to an excessive external input or internal
oscillation, the GS820 forcibly turns the output OFF and displays a “Circuit Protection”
warning. If this happens, immediately turn OFF the power switch. If the same warning
appears when you turn ON the power switch after removing the cause of the problem
such as the load connected externally, the GS820 may have malfunctioned. Contact your
nearest YOKOGAWA dealer.
Handle the Power Cord with Care
Nothing should be placed on top of the power cord. The power cord should also be kept
away from any heat sources. When unplugging the power cord from the outlet, never
pull by the cord itself. Be sure to hold and pull by the plug. If the power cord is damaged,
check the part number indicated on page iii and purchase a replacement.
Chapter 3
Instrument Preparation and Common Operations
3-1
IM 765601-01E
Instrument Preparation and Common Operations
3
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11
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App
Index
