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SECTION 2 PRECAUTION
2-4
2.4 Preparation Before Power-On
The MG3641A/MG3642A normally operates by connecting the power having the voltage range +10 % to –15 % for
the specified nominal voltage 100 to 240 Vac. However, the safety measures are required to avoid the following
before the AC power is supplied:
• Accident resulting in injury or death caused by electric shock
• Internal unit damage by abnormal voltage
• Trouble by earth current
To protect the user's safety and call a user's attention, WARNING and CAUTION are indicated on the rear panel as
follows:
WARNING CAUTION
NO OPERATOR SERVICE- FOR CONTINUED FIRE
ABLE PARTS INSIDE. PROTECTION. REPLACE
REFER SERVICING TO ONLY WITH SPECIFIED
QUALIFIED PERSONNEL. TYPE AND RATED FUSE.
The user must therefore take the safety measures described in the following pages.
Warning
This measuring instrument that is a precision electronic
device has some dangerous parts. The user cannot
repair this device, so do not disassemble this device.
For services of this device, contact your qualified
service personnel.
Caution
Use a specified type and rated contents when replacing
a fuse. Using an illegal fuse may result in a fire.