Agilent Technologies InfiniiVision 7000 Series User manual

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Agilent InfiniiVision
7000 Series
Oscilloscopes
Service Guide

7000 Series Oscilloscopes Service Guide
Notices
© Agilent Technologies, Inc. 2008-2013
No part of this manual may be reproduced in
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Manual Part Number
54695-97032, February 2013
Print History:
54695-97031, January 2013
54695-97016, January 2010
54695-97013, March 2009
54695-97012, December 2008
54695-97010, August 2008
54695-97007, March 2008
54695-97003, January 2008
Available in electronic format only
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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A newer version of this manual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/7000manual
Microsoft ® is a U.S. registered trademark
of Microsoft Corporation.

7000 Series Oscilloscopes Service Guide 3
In This Service Guide
This book provides the service information for the Agilent
7000 Series oscilloscopes. This manual is divided into these
chapters:
1 Characteristics and Specifications
This chapter contains a partial list of characteristics and
specifications for the Agilent InfiniiVision 7000 Series
oscilloscopes.
2TestingPerformance
This chapter explains how to verify correct oscilloscope
operation and perform tests to ensure that the oscilloscope
meets the performance specifications.
3 Calibrating 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.
5ReplacingAssemblies
This chapter describes how to remove assemblies from the
7000 Series oscilloscope.
6ReplaceableParts
This chapter describes how to order replaceable assemblies
and parts for the Agilent 7000 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 7000 Series Oscilloscopes Service Guide
Digital Channels
Because all of the oscilloscopes in the Agilent 7000 Series have analog channels,
the analog channel topics in this book apply to all instruments. Whenever a topic
discusses the digital channels, that information applies only to Mixed-Signal
Oscilloscope (MSO) models or DSO models that have been upgraded to an MSO.
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.

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 18
Contact us 19
2TestingPerformance21
Overview 22
List of Test Equipment 23
Fluke MET/CAL Procedures 25
Conventions 25
To construct the test connector (for use with MSO models
only) 26
To test digital channels (MSO models only) 28
To verify digital channel threshold accuracy (MSO models
only) 29
When to Test 29

6Service Guide
Contents
What to Test 29
Verifying Test Results 29
To verify voltage measurement accuracy 33
To verify bandwidth 38
To verify time scale accuracy 44
To verify horizontal delta t accuracy 46
To verify trigger sensitivity 47
Test Internal Trigger Sensitivity (all models) 49
Test External Trigger Sensitivity (2-channel models) 51
Test External Trigger Sensitivity (4-channel models) 54
Agilent 7000 Series Oscilloscopes Performance Test
Record 57
3 Calibrating and Adjusting 59
User Calibration 61
To perform User Cal 61
User Cal Status 64
4Troubleshooting65
Solving General Problems with the Oscilloscope 66
Troubleshooting the Oscilloscope 69
Equipment required for troubleshooting 70
To check out the oscilloscope 70
To verify basic oscilloscope operation 72
To compensate the analog probes 73
Troubleshooting Flowchart 74
System board drawings 75
To check the 7000 Series oscilloscope power supply 77
To check the 7000 Series system board 78
To check the 7000 Series display 79
To check the fan 80

Contents
Service Guide 7
To run the internal self-tests 81
To verify default setup 81
5ReplacingAssemblies83
Removing the Handle 85
To remove the Adjustable Legs 86
To remove Cabinet 87
To remove the Rear Deck Assembly 88
To remove Acquisition and Inverter assemblies 90
To remove the Front Panel assembly 93
To remove the Fan assembly 99
To remove the power supply shield 100
To remove the power supply 102
To remove the AC input board 103
6ReplaceableParts105
Ordering Replaceable Parts 106
Listed Parts 106
Unlisted Parts 106
Direct Mail Order System 106
Exchange Assemblies 107
Exploded Views 108
Replaceable Parts List 110
Index 117

8Service Guide
Contents

Service Guide 9
Figures
Figure 1. Constructing the 8-by-2 Connector 27
Figure 2. Setting Up Equipment for Digital Channel Threshold
Accuracy Test 31
Figure 3. Setting up Equipment for Voltage Measurement Accuracy
Tes t 36
Figure 4. Using a Blocking Capacitor to Reduce Noise 37
Figure 5. Setting Up Equipment for Bandwidth Verification
Tes t 40
Figure 6. Setting Up Equipment for Internal Trigger Sensitivity
Tes t 49
Figure 7. Setting Up Equipment for 2-Channel External Trigger
Sensitivity Test 52
Figure 8. Setting Up Equipment for 4-Channel External Trigger
Sensitivity Test 55
Figure 9. User Calibration cable for 2-channel oscilloscope 62
Figure 10. User Calibration cable for 4-channel oscilloscope 63
Figure 11. Example pulses 73
Figure 12. System Board Test Points - Top Side 75
Figure 13. System Board Test Points - Bottom Side 76
Figure 14. Location of the Fan Connector 80
Figure 15. Default setup screen 82
Figure 16. Removing the handle 85
Figure 17. Removing adjustable leg 86
Figure 18. Removing cabinet 87
Figure 19. Removing the rear deck assembly 88
Figure 20. Separating front and rear deck assemblies 89
Figure 21. Removing the T6 screws 90
Figure 22. TORX T10 mounting screw locations 91
Figure 23. Unlocking alignment pin 92

10 Service Guide
Figures
Figure 24. Removal of inverter board 92
Figure 25. Removing cable shield 93
Figure 26. Removing keyboard cables 93
Figure 27. Removing knobs 94
Figure 28. Removing the bezel 94
Figure 29. Removal of softkey board 95
Figure 30. Removing front panel assembly from front deck 96
Figure 31. Front panel assembly separated from front deck 96
Figure 32. Separating front panel from printed circuit board 97
Figure 33. Front panel disassembly 97
Figure 34. Removing display assembly 98
Figure 35. Removing fan assembly 99
Figure 36. Power supply cover screw removal 100
Figure 37. Lifting power supply cover off 101
Figure 38. Removing the power supply 102
Figure 39. Removing the AC input board 103
Figure 40. Removing power switch extender 104
Figure 41. Exploded View 1 of 2 108
Figure 42. Exploded View 2 of 2 109