Keysight Technologies N5247B, Service Manual

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Keysight N5247B Service Guide 1-5
Safety and Regulatory Information
General Safety Considerations
Servicing
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.
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.
Procedures described in this document may be performed with
power supplied to the product while protective covers are removed.
Energy available at many points may, if contacted, result in personal
injury.
No operator serviceable parts inside. Refer servicing to qualified
personnel. To prevent electrical shock, do not remove covers.
The opening of covers or removal of parts may expose dangerous
voltages. Disconnect the instrument from all voltage sources while
it is being opened.
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).
Do not operate the analyzer with the outer cover removed for more than
30 minutes, as this could cause the analyzer to overheat which could
result in costly damage.
There are no replaceable fuses in the mains input or within the power
supply assembly.
Keysight personnel: after calibration is completed, attach four “calibration
void if seal broken” stickers to the PNA as shown in Figure 1-1 .