General Maintenance
Introduction 2
2-3
Introduction
This chapter provides handling, cleaning, fuse replacement, disassembly, and assembly
instructions for the Meter.
Warranty Repairs and Shipping Information
If your meter is still under warranty, see the warranty information at the front of this
manual for instructions on returning the unit. A list of Fluke telephone numbers and the
website address can be found in the “How to Contact Fluke” section of Chapter 4.
General Maintenance Information
The following sections describe how to maintain the Meter.
Required Equipment
Equipment required for calibration, troubleshooting, and repair of the Meter is listed in
Table 3-1.
Power Requirements
XW Warning
To avoid electric shock, connect the Meter’s power cord to a
power receptacle with earth ground.
The Meter operates on power distribution standards found throughout the world, and
must be set up to operate on the correct line voltage power it. The Meter is packed ready
for use with a line voltage determined at the time of ordering. If the selected line voltage
does not match the power the Meter will be plugged into, then the Meter’s line voltage
setting must be changed and the line fuse possibly replaced. See the 8845A/8846A Users
Manual for information on switching the Meter’s line voltage.
If you have not already done so, plug the line cord into the connector on the rear of the
Meter.
Static Safe Handling
All integrated circuits, including surface mounted ICs, are susceptible to damage from
electrostatic discharge (ESD). Modern integrated circuit assemblies are more susceptible
to damage from ESD than ever before.
Integrated circuits today can be built with circuit lines less than one micron thick,
allowing more than a million transistors on a 1/4-inch square chip. These submicron
structures are sensitive to static voltages under 100 volts. This much voltage can be
generated on a dry day by simply moving your arm. A person can develop a charge of
2,000 volts by walking across a vinyl tile floor, and polyester clothing can easily generate
5,000 to 15,000 volts during movement against the wearer. These low voltage static
problems are often undetected, because a static charge must be in the 30,000 to 40,000
volt range before a person will feel a shock.
Most electronic components manufactured today can be degraded or destroyed by ESD.
While protection networks are used in CMOS devices, they can only reduce, not
eliminate, component susceptibility to ESD.
ESD may not cause an immediate failure in a component; a delayed failure or
"wounding" effect is caused when the semiconductor’s insulation layers or junctions are
To Next Page
Loading...
Need help?
General
