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Infiniium MSOS404A
Keysight Infiniium MSOS404A Service Guide
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82
S-Series Oscilloscopes Service Guide
5
Replacing Assemblies
3
T
o finish removing the bezel, disengage the seven bezel snaps—two on each
side, one near the middle,
and one each on the top and bottom.
81
83
Table of Contents
Table of Contents
5
General Information
9
Instruments Covered by this Service Guide
10
Accessories Supplied
10
Characteristics and Environmental Conditions
11
Calibration
13
What Is a Calibration
14
Running a User Calibration
15
Equipment Required
15
Calibration Time
15
Procedure
16
Testing Performance
19
Performance Verification General Information
20
Performance Test Interval
20
Performance Test Record
20
Test Order
20
Test Equipment
20
Vertical Performance Verification
21
Input Impedance Test
22
Offset Accuracy Test
24
DC Gain Accuracy Test
31
Analog Bandwidth-Maximum Frequency Test
34
Time Scale Accuracy (TSA) Test
41
Performance Test Record
44
Troubleshooting
51
Troubleshooting Overview
52
Verifying Basic Operation
53
Power up the Oscilloscope
53
Check the Display
54
Run the Oscilloscope Self Tests
54
Run the Keyboard, LED, and Touch Screen Self Tests
55
Run a User Calibration
57
Verify System Performance
57
Power Supply Troubleshooting
58
Using the Power Fault Leds
59
Types of Faults
61
Sequencer Group Faults
62
Motherboard Troubleshooting
63
Display Troubleshooting
65
Setting up the BIOS
66
Keyboard Troubleshooting
67
LED Troubleshooting
68
Touch Screen Troubleshooting
69
Checking Probe Power Outputs
70
Before You Contact Keysight
71
Replacing Assemblies
73
ESD Precautions
74
Tools Required
74
Returning the Oscilloscope to Keysight Technologies for Service
75
Removing and Replacing the Rear Cover and Rear Fan Assembly
76
Removing and Replacing the Front Panel, Bezel, Keyboards, Display/Touch Screen Assembly, and Autoprobe Board
79
Removing and Replacing the Processor Assembly
87
Removing and Replacing the Acquisition Board
89
Setting the Calibration Factors after Replacing the Acquisition Board
91
Removing and Replacing the Motherboard
92
Removing and Replacing the Power Supply
93
Replaceable Parts
95
Ordering Replaceable Parts
96
Exploded Views
97
Replaceable Parts List
102
Theory of Operation
107
Motherboard Assembly
108
Acquisition Assembly
109
Front Panel Assembly
109
Safety Notices
111
Warnings
111
Cleaning the Instrument
112
Safety Symbols
112
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User Guide
54 pages
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Keysight Infiniium MSOS404A Specifications
General
Brand
Keysight
Model
Infiniium MSOS404A
Category
Test Equipment
Language
English
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