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General| Diode Test | Yes |
|---|---|
| Max Voltage Measurement | 1000V DC |
| Max Current Measurement | 10A |
| Battery Type | 9V |
| Continuity Test | Yes |
Information about usage of a feature contained in the manual.
To avoid fire hazard, use only a fuse identical in type, voltage rating, and current rating.
Always operate the meter with case top and bottom properly assembled.
If the meter appears damaged or operates abnormally, protection may be impaired.
This service manual provides information on maintaining, troubleshooting, and repairing the Fluke 79 and 29 Multimeters.
The following descriptions for the various chapters serve to introduce the manual.
Throughout the manual, certain notational conventions are used.
Specifications for Models 79 and 29 are presented in Table 1-1.
This chapter describes the theory of operation for the Fluke 79 and Fluke 29 Multimeters.
Functional block descriptions present an overview of circuit operation followed by circuit descriptions.
The following paragraphs discuss the functional blocks in Figure 2-1.
The a/d converter, autorange switching, frequency comparator, and most of the remaining analog circuitry are contained in the analog section of U4.
A microcomputer, integrated within U4, controls the various instrument functions and drives the display.
The power supply consists of two regulators, one shunt and one series.
Practices for minimizing damage to static sensitive devices during handling.
Guidelines for static-free workstations, containers, and tools.
This section contains maintenance information for the Fluke 79 and 29 meters.
Test equipment recommended for the performance tests and calibration.
WARNING TO AVOID ELECTRICAL SHOCK, REMOVE THE TEST LEADS BEFORE OPENING THE CASE.
Tests recommended for incoming inspection, periodic maintenance, and specification verification.
Procedure to calibrate the meter annually for accurate performance.
Procedures to help isolate problems with the meter.
Troubleshooting interrelation between common and Vdd regulator circuits.
This chapter contains an illustrated list of replaceable parts for the Fluke 79 and Fluke 29 Multimeters.
Instructions on ordering electrical components directly from Fluke Corporation.
Defines assembly revision levels documented in the manual.
Identifies changes and improvements made to the instrument via revision letters.
Contact information for Fluke service centers in the United States.
Contact information for Fluke service centers globally.
Schematic diagram for the main printed circuit assembly (PCA).
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