Agilent Technologies InfiniiVision 5000 Series User manual

Agilent Technologies
Agilent 5000 Series
Oscilloscopes
Service Guide

5000 Series Oscilloscopes Service Guide
Notices
© Agilent Technologies, Inc. 2005-2008
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Manual Part Number
54574-97032
Edition
Fourth Edition, August 2008
Printed in Malaysia
Agilent Technologies, Inc.
1900 Garden of the Gods Road
Colorado Springs, CO 80907 USA
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Safety Notices
CAUTION
A CAUTION notice denotes a haz-
ard. It calls attention to an operat-
ing procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly per-
formed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated condi-
tions are fully understood and
met.
A newer version of this manual
may be available at:
www.agilent.com/find/5000
Microsoft ®is a U.S. registered trademark
of Microsoft Corporation.

5000 Series Oscilloscopes Service Guide 3
In This Service Guide
This book provides the service information for the Agilent 5000
Series Oscilloscopes. This manual is divided into these
chapters:
1Characteristics and Specifications
This chapter lists characteristics and specifications for the
Agilent 5000 Series Oscilloscopes.
2Testing P e r f orman c e
This chapter explains how to verify correct oscilloscope
operation and perform tests to ensure that the oscilloscope
meets the performance specifications.
3Calibrating and Adjusting
This chapter explains how to adjust the oscilloscope for
optimum operating performance.
4Troubleshooting
This chapter begins with suggestions for solving general
problems that you may encounter with the oscilloscope.
Procedures for troubleshooting the oscilloscope follow the
problem solving suggestions.
5Replacing Assemblies
This chapter describes how to remove assemblies from the 5000
Series oscilloscope.
7Replaceable Parts
This chapter describes how to order replaceable assemblies and
parts for the Agilent 5000 Series Oscilloscopes. It includes
diagrams and parts lists for hardware that you can order.
At the front of the book you will find safety notice descriptions
and document warranties.

4 5000 Series Oscilloscopes Service Guide
Abbreviated instructions for pressing a series of keys
Instructions for pressing a series of keys are written in an abbreviated manner.
Instructions for pressing Key1, then pressing Key2, then pressing Key3 are
abbreviated as follows:
Press Key1 & Key2 & Key3.
The keys may be front panel keys, or softkeys, which are located directly below
the oscilloscope display.

5000 Series Oscilloscopes Service Guide 5
Contents
Figures 9
Tables 11
1 Characteristics and Specifications 13
Power Requirements 14
Measurement Category 15
Measurement Category 15
Measurement Category Definitions 15
Transient Withstand Capability 16
Environmental Conditions 17
Specifications 19
Contact us 20
2TestingPerformance21
List of Test Equipment 22
To verify voltage measurement accuracy 24
To verify bandwidth 28
To verify time scale accuracy 33
To verify horizontal Dt accuracy 35
To verify trigger sensitivity 38
Test Internal Trigger Sensitivity (all models) 40
Test External Trigger Sensitivity (2-channel models) 42
Test External Trigger Sensitivity (4-channel models) 45
Agilent 5000 Series Oscilloscopes Performance Test Record 48

6 5000 Series Oscilloscopes Service Guide
Contents
3 Calibrating and Adjusting 51
User Calibration 53
To perform User Cal 53
User Cal Status 56
4Troubleshooting57
Solving General Problems with the Oscilloscope 58
Troubleshooting the Oscilloscope 61
Equipment required for troubleshooting 62
To check out the oscilloscope 62
To verify basic oscilloscope operation 64
To compensate the analog probes 65
Troubleshooting Flowchart 66
To check the oscilloscope power supply 67
To check the AC input board 69
To check the system board 71
To check the display 71
To check the fan 72
To run the internal self-tests 73
To verify default setup 74
5ReplacingAssemblies77
To remove the cabinet 80
To remove the handle 81
To remove the storage lid 82
To remove the front panel assembly 83
To remove the keyboard assembly 86
To remove the main shield 89
To remove the display assembly 91
To remove the backlight inverter board and e-field shield 95

Contents
5000 Series Oscilloscopes Service Guide 7
To remove the LCD, gasket, and protective lens from the display
mount 99
To remove the power shaft 102
To remove the AC input board 103
To remove the power supply 105
To remove the fan 106
To remove the system board 108
6ReplaceableParts113
Ordering Replaceable Parts 114
Listed Parts 114
Unlisted Parts 114
Direct Mail Order System 114
Exchange Assemblies 115
Exploded Views 116
Replaceable Parts List 118
Index 123

8 5000 Series Oscilloscopes Service Guide
Contents

5000 Series Oscilloscopes Service Guide 9
Figures
Figure 1. Connect equipment for voltage measurement accuracy
test 26
Figure 2. Using a Blocking Capacitor to Reduce Noise 27
Figure 3. Connect equipment for bandwidth test 29
Figure 4. Connect equipment for internal trigger sensitivity
test 40
Figure 5. Connect equipment for external trigger sensitivity test
(2-channel models) 43
Figure 6. Connect equipment for external trigger sensitivity test
(4-channel models) 46
Figure 7. User Calibration cable for 2-channel oscilloscope 54
Figure 8. User Calibration cable for 4-channel oscilloscope 55
Figure 9. 5000 Series start up sequence 63
Figure 10. Example pulses 65
Figure 11. Power supply to AC input board connector 68
Figure 12. System board test point locations 70
Figure 13. Location of the fan connector 73
Figure 14. Default setup screen 75
Figure 15. Removing the cabinet 80
Figure 16. Removing handle 81
Figure 17. Installing the hinged storage lid 82
Figure 18. Removing the intensity knob and T6 screws 83
Figure 19. Disconnecting ribbon cable and releasing tab
retainers 84
Figure 20. Removing the front panel 85
Figure 21. Removing the keyboard assembly 87
Figure 22. Main shield removal 89
Figure 23. Main shield reinstall 90

10 5000 Series Oscilloscopes Service Guide
Figures
Figure 24. Disconnecting the display cables (bottom view of
scope) 92
Figure 25. Removing the display assembly 93
Figure 26. Installing the display 94
Figure 27. Opening the backlight inverter shield 95
Figure 28. Removing the backlight inverter 96
Figure 29. Removing the backlight inverter shield 97
Figure 30. Closing the shield 98
Figure 31. Release display mount latches 99
Figure 32. Removing the LCD, gasket, and protective lens 100
Figure 33. Latch over face of sheet metal housing 101
Figure 34. Removing the power shaft latch 102
Figure 35. Removing the AC input board 103
Figure 36. Removing the power supply 105
Figure 37. Locating and disconnecting fan cable 106
Figure 38. Removing the fan 107
Figure 39. Preparing to remove the system board 109
Figure 40. Removing the system board 110
Figure 41. Exploded View 1 of 2 116
Figure 42. Exploded View 2 of 2 117