Cleaning This Instrument - Keysight E4990A Help Manual

replacement of storages performed by the Company. When a storage itself
fails, the programs and data stored in it cannot be recovered.
Devices to be Sent Back for Repair or Regular Calibration
If it is necessary to send the unit to the Service Center of Agilent
Technologies for repair or regular calibration, please follow the instructions
below.
Equipment to be Sent
When requesting repair or regular calibration of the unit by our Service
Center, send only the E4990A main unit without any installed option you
may have ordered. Unless specifically instructed, it is not necessary to
send accessories and calibration kits.
Packing
Use the original package and shock absorbers, or equivalent anti-static
packing materials, when sending the unit.
Shipping Address
For the location of the nearest Agilent Technologies Service Center, contact
the Customer Contact.
Recommended Calibration Period
The recommended calibration period for this instrument is one year. The
user is recommended to request the Company's Service Center to perform
regular calibration every year.

Cleaning this Instrument

Cleaning an LCD
•
Maintenance of Test Ports and Other Connectors/Ports
•
Cleaning Parts Other than the LCD, Test Ports, and Other
•
Connectors/Ports
Other topics about Maintenance
This section describes how to clean the instrument.
To protect yourself from electrical shock, be sure to unplug the power
cable from the outlet before cleaning the instrument.
Never clean the internal components of the instrument.
Cleaning an LCD
Use one of the following methods to clean the display surface regularly.
For normal cleaning, rub the surface gently with a dry, soft cloth.
•
When stains are difficult to remove, gently wipe the surface with
•
cloth damped with a small amount of dehydrated ethanol.
Product Information
235