Introduction - Keysight E4990A Troubleshooting Manual

1
Troubleshooting

Introduction

WA RNING
WA RNING
CAUTION
CAUTION
18
These servicing instructions are for use by qualified personnel only. To
avoid possible electrical shock, do not perform any servicing unless you
are qualified to do so.
The opening of covers or removal of parts are likely to expose dangerous
voltages. Disconnect the instrument from its power supply beforehand.
Many of the assemblies in the instrument are very susceptible to damage
from ESD (electrostatic discharge). Perform the following procedures only
at a static-safe workstation and wear a grounding strap.
DO NOT operate without following instructions. Program or files in the
instrument may be broken.
Impedance Analyzer