Agilent Technologies 4339B Service Manual

Keyboard
Assembly Removal
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. 3-13
Removal
Procedure .
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3-13
LCD
Assembly Removal
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3-14
Removal
Procedure .
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3-14
Interlock
Connector Removal
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. 3-14
Removal
Procedure .
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3-14
Triaxial
Connector
Removal
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3-15
Removal
Procedure
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3-15
BNC
Connector
Removal
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3-16
Removal
Procedure
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3-16
4.
Troubleshooting
Introduction
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4-1
Safety
Considerations
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4-1
Required
Equipment
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4-1
After
Service
Product
Safety
Checks
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4-2
Theory
of
Operation
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4-3
Overall
Measurement
Theory
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4-3
Overall
Block
Diagram
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4-4
Analog
Section
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4-5
DC
V
oltage
Source
Section
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4-6
Ammeter
Section
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4-7
I-V
Converter
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. 4-7
Reference
Current
Source
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4-7
Digital
Section
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. 4-8
P
ower
Supply
Section
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4-9
Troubleshooting
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4-10
Check Procedure
References
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4-12
Check
1, DC-DC
Converter
Output
V
oltage
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4-12
Check
2, LCD
Displays
Anything?
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4-13
Check
3, LCD
Operates Correctly?
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4-13
Check
4, Any
Error Message
on
LCD?
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4-13
Check
5,
CPU
Related
Error
Message?
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4-13
Check
6,
Ammeter
Functionality
Check
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. 4-13
Check
7,
CPU
P
ower
LED
Lights?
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4-14
Check
8,
Any
Error
Code
on
LED?
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4-14
Check
9,
CPU
Fuse
High
Lead
V
oltage
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4-15
Check
10,
Fuse
and
Line
Switch
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4-15
Check
11,
DC-DC
Converter
Input
V
oltage
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4-16
Check
12,
DC-DC
Converter
Open
Output
V
oltages .
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. 4-17
Check 13, Transformer Secondary V
oltage . . . .
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4-18
A. Manual Changes
Introduction . . . . . . . . . . . . . . . . . . . . .
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A-1
Manual Changes . . . . . . . . . . . . . . . . . . . .
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A-1
B. Default Jumper and Switch Settings
Introduction . . . . . . . . . . . . . . . . . . . . . . . .
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B-1
Jumper and Switch Settings ...... .... .... .... .... ... B-1
Index
Contents-2

Agilent Technologies 4339B Specifications

General

Brand	Agilent Technologies
Model	4339B
Category	Measuring Instruments
Language	English