Before Applying Power; Servicing - Keysight N9912A Service Manual

Safety and Regulatory Information
General Safety Considerations

Before Applying Power

WARNING If this product is not used as specified, the protection provided by the equipment could be
impaired. This product must be used in a normal condition (in which all means for
protection are intact) only.
CAUTION This product is designed for use in Installation Category II and Pollution Degree 2 per IEC
61010-1:2001 and 664 respectively.
CAUTION The measuring terminals on this instrument are designed to be used with external signals
described in Measurement Category I, but NOT with external signals described in Categories
II, III, and IV. The input of this instrument cannot be connected to the mains.

Servicing

WARNING These servicing instructions are for use by qualified personnel only. To avoid electrical
shock, do not perform any servicing unless you are qualified to do so.
WARNING Danger of explosion if battery is incorrectly replaced. Replace only with the same or
equivalent type recommended. Discard used batteries according to local ordinances
and/or manufacturer's instructions.
WARNING No operator serviceable parts inside. Refer servicing to qualified personnel. To prevent
electrical shock, do not remove covers.
WARNING For continued protection against fire hazard, replace line fuse only with same type and
rating. The use of other fuses or material is prohibited.
WARNING The detachable power cord is the instrument disconnecting 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).
1-4
RF Analyzer
N9912A
Service Guide N9912-90003