Fluke II Series Service Manual

Introduction and Specifications
INTRODUCTION
INTRODUCTION
1-1.
This
manual presents
service
information for the
Fluke
70, 73, 75,
77,
21,
and
23
Series
II Multimeters. The
manual includes
a theory of
operation,
general maintenance
procedures, performance
tests, calibration
procedures,
troubleshooting
information,
a
list
of
replaceable parts,
and schematic
diagrams.
A meter under warranty
will
be
promptly
repaired or replaced (at Fluke’s
option) and
returned
at
no charge.
See
the
registration card for warranty terms.
If the warranty has
lapsed, the meter will
be repaired and returned for
a fixed fee. Contact
the
nearest
Service Center for
information
and
prices.
A list of U.S. and International Service
Centers is included at the
end of Section 4 of this manual.
ORGANIZATION
OF THE SERVICE MANUAL
1-2.
The following
descriptions briefly
describe each section
in
the manual.
SECTION
1. INTRODUCTION AND SPECIFICATIONS
This section describes
use
of
the
Service
Manual and application of special terminology
(conventions)
to
describe
the meter’s circuitry. A
complete set
of
specifications appears
at the end of this
section.
SECTION
2.
THEORY
OF OPERATION
This
section first
categorizes instrument circuitry
into
functional blocks, with
a descrip-
tion of
each block’s
role in overall
operation. A
detailed circuit
description is then given
for each block. These
descriptions explore operation
to
the component level and fully
support troubleshooting
and repair procedures defined in Section
3.
SECTION 3. MAINTENANCE
Provides complete maintenance information, from general maintenance and cleaning
instructions
to
detailed troubleshooting
and repair procedures to the component level.
Troubleshooting and repair procedures rely
heavily on both
the Theory of Operation
presented in Section 2 and the Schematic Diagrams shown in Section
5.
SECTION
4.
LIST OF REPLACEABLE
PARTS
Includes parts lists for all standard
assemblies. Information
on
how and where to order
parts
is also
provided.
SECTION
5. SCHEMATIC
DIAGRAMS
Includes schematic diagrams for
all
assemblies.
1-3

Fluke II Series Specifications

General

True RMS	Yes
Temperature	-40 °C to 400 °C
Continuity	Yes
Diode Test	Yes
Safety Rating	CAT III 600V
Voltage DC	600V
Voltage AC	600V
Current DC	10A
Current AC	10A
Resistance	40MΩ
Battery Life	400 hours
Warranty	3 years