Maintenance
4-4
371B Service Manual
appropriate schematic diagram. In addition, the circuit board illustrations are
included that show the physical location of the waveform test points that appear
on the schematic diagram.
Troubleshooting Charts.
Troubleshooting charts are given in Chapter 8: Diagrams
and Circuit Board Illustrations, to aid in locating a defective circuit. The shaded
blocks on the troubleshooting charts indicate circuits that may cause the
indicated malfunction. The circuits listed are discussed in detail in Chapter 3:
Theory of Operation.
Adjustment and Test Point Location.
To aid in locating test points and adjustable
components called out in the various portions of the adjustment procedure, the
“Adjustment and Test Point Locations” pullout pages appear in Chapter 8:
Diagrams and Circuit Board Illustrations.
The following equipment is useful for troubleshooting the 371B.
1. Transistor Tester
Description:
Dynamic tester
Purpose:
Tests semiconductors.
Recommended type:
SONY/Tek 370B Programmable Curve Tracer
2. Digital Multimeter
Description:
10 M
W
input impedance and0 to 1 kV range, AC andDC;
ohmmeter, accuracy, within 0.1%. Test probes must be
insulatedto prevent accidental shorting.
Purpose:
Checks voltages andresistances.
Recommended type:
Tektronix DM501A Digital Multimeter
3. Test Oscilloscope
Description:
Frequency response, DC to 150 MHz minimum; deflection
factor, 2 mV to 5 V/division. A 10X, 10 M
W
voltage probe
shouldbe usedto reduce circuit loading for voltage
measurements.
Purpose:
Checks operating waveforms.
Recommended type:
Tektronix 2445B Oscilloscope
Troubleshooting
Equipment
Содержание 371B
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Страница 18: ...Preface 371B Service Manual...
Страница 21: ...Specifications...
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Страница 39: ...General Information...
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Страница 59: ...Theory of Operation...
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Страница 62: ...Theory of Operation 3 2 371B Service Manual Figure 3 1 371B Block Diagram...
Страница 71: ...Maintenance...
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