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Power Supplies/Fan - HP 8340B Manual

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Table of Contents

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Power Supplies/Fan
Assembly-Level Service
CONTENTS
INTRODUCTION
...............................................................
1-1
Assemblies
..................................................................
1-1
THEORY
OF
OPERATION
......................................................
1-2
Primary
Power
..............................................................
1-2
Line
Module
.................................................................
1-2
A19
Capacitor Assembly
........................................................
1-3
A35
Rectifier Assembly
.........................................................
1-3
A52 Positive Regulator
.........................................................
1-4
A53 Negative Regulator
........................................................
1-4
A56
-15V
Regulator
...........................................................
1-4
Power
Supplies
..............................................................
1-4
Supply Failure Monitoring Circuitry
...............................................
1-5
Standby
Mode
................................................................
1-5
Power Supplies/Fan
Simplified Block Diagram
.....................................
1-7
ASSEMBLY-LEVEL TROUBLESHOOTING
.......................................
1-9
Instrument Blows Line Fuse
.....................................................
1-9
Line
Module Troubleshooting
...................................................
1-10
Rectifiers and Regulators
......................................................
1-10
Power Supply Troubleshooting
to
Assembly-Level Flow Chart
........................
1-11
Power Supplies/Fan
Block
Diagram
..............................................
1-13
Power Supply Destination Chart
................................................
1-15
Power Supplies/Fan Major
Assemblies Location Diagram
............................
1-16
REPAIR PROCEDURES
.......................................................
1-18
Transformer Replacement
.....................................................
1-18
Line
Module Replacement
.....................................................
1-19
Fan
Replacement
............................................................
1-20
REPLACEABLE PARTS
.......................................................
1-24
HP 8340B/41B
Table of Contents
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8341b

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