ETS-Lindgren HI-2790B Calibration Comparison System - Manual (Page 11)

www.ets-lindgren.com Maintenance 11
2.0 Maintenance
CAUTION: Before performing any maintenance, follow the
safety information in the ETS-Lindgren
Product Information Bulletin included with your shipment.
WARRANTY
WARNING: Maintenance of the HI-2790B and HI-1710 LCR
is limited to external components such as cables or
connectors.
Clean the exterior of the cabinet using a damp cloth and
mild cleaner. Always unplug the unit before cleaning.
Keep the interior of the cabinet free of any foreign objects.
Warranty may be void if the housing is opened.
If you have any questions concerning maintenance,
contact ETS-Lindgren Customer Service.
Replacing the Fuse
Caution: Disconnect the HI-2790B and HI-1710 from power
before replacing a fuse.
If the HI-2790B Calibration Comparison System or HI-1710 Microwave Survey
Meter (HI-1710 LCR) fails to operate, check for a blown fuse inside the power
entry module. A blown fuse must be replaced with the same value and type of
fuse, or an unsafe condition may result. Use only 250 Volt, 1.0 Amp, Type T
(5 mm x 20 mm) fuses.
To replace a fuse:
1. Two fuses are located in the fuse drawer in the power input module.
Use a screwdriver to open the drawer.
2. The fuse towards the outside of the drawer is the spare. Remove the
spare fuse from the module.