California Instruments 3000iL, Руководство пользователя

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iL Series User Manual
California Instruments
Rev B 69
7. Troubleshooting
7.1 Introduction
WARNING: Shock Hazard The troubleshooting procedure in this
chapter must be performed with power applied and protective covers
removed. These procedures should be done only by trained service
personnel aware of the hazard from electrical shock
SAFETY CONSIDERATIONS
This AC source is a Safety Class I instrument, which means it has a protective earth
terminal. This terminal must be connected to earth ground through a power source
equipped with a 4-wire, grounded receptacle. Refer to the "Safety Summary" page at
the beginning of this manual for general safety information. Before operation or
repair, check the AC power source and review this manual for safety warnings and
instructions. Safety warnings for specific procedures are located at appropriate
places in the manual.
Caution:
The power source has components that can be damaged by ESD
(electrostatic discharge). Failure to observe standard, antistatic practices
can result in serious degradation of performance, even when an actual
failure does not occur.
When working on the AC Power Source observe all standard, antistatic work
practices. These include, but are not limited to:
•
working at a static-free station such as a table covered with static-dissipative
laminate or with a conductive table mat
•
using a conductive wrist strap
•
grounding all metal equipment at the station to a single common ground
•
connecting low-impedance test equipment to static-sensitive components only
when those components have power applied to them
•
removing power from the before removing or installing printed circuit boards
7.2 Localizing the Problem
This chapter provides troubleshooting and repair information for the AC source.
Before beginning troubleshooting procedures, make certain the problem is in the AC
source and not with an associated circuit, the GPIB controller, or the ac input line.
Without removing the covers, you can use the Verification tests in Chapter 6 to
determine if the AC source is operating normally.