Keysight N9000A - Page 217

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Chapter 12 217

Replaceable Parts

Hardware

Figure 12-9 DIF Cables

Item Description Agilent Part Number

1 A2 Digital I.F. Assembly N9000-60400

W4 Cable Assembly, A2J15 to A8J320 N9000-20103

W6 Cable Assembly, A9J751 to A2J14 N9000-20119

Main Page

Table of Contents7
Overview15
What You will Find in this Chapter16
Agilent CXA Signal Analyzer Overview17
Agilent CXA Overview17
Instrument Option Descriptions18
Signal Analyzer Accessories19
Manual Set on CD-ROM19
50 Ohm Load20
50 Ohm/75 Ohm Minimum Loss Pad20
75 Ohm Matching Transformer20
AC Probe20
AC Probe (Low Frequency)20
Broadband Preamplifiers and Power Amplifiers20
RF and Transient Limiters21
Power Splitters21
Static Safe Accessories21
Before You Start Troubleshooting22
ESD Information24
Protection from Electrostatic Discharge24
Handling of Electronic Components and ESD25
Test Equipment Usage and ESD25
For Additional Information about ESD25
Service Equipment You will Need26
Calibration Application Software26
USB Keyboard and Mouse27
USB Storage Device27
Required Test Equipment List28
Required Equipment28
After an Instrument Repair36
Contacting Agilent Technologies37
Instrument Serial Numbers39
How to Return Your Instrument for Service40
Service Order Number40
Original Packaging40
Other Packaging41
Boot up and Initialization Troubleshooting43
What You will Find in this Chapter44
Check the Basics45
CXA Instrument Boot up Process46
Typical Instrument Boot-Up Process Flow47
Potential Problems During Boot Process49
Yellow Standby LED Does Not Illuminate49
Green Power on LED Does Not Illuminate51
Fan(S) Are Not Operating53
No Agilent Splash Screen Displayed55
Instrument Hangs at the Agilent Splash Screen56
PCI Enumeration Error56
Instrument Cannot Completely Load or Run the Operating System57
Troubleshooting a Blank Display57
Verify LCD Backlight Functionality58
Verify Video Signal Path Integrity61
Video Controller / LCD Troubleshooting61
Initializations DID Not Complete61
Fails an Initial Alignment62
Signal Level Verification63
Instrument Messages65
Introduction66
Event and Condition Categories66
Event Message Format67
Event Queues68
Advisory Messages70
800, Operation Complete Event76
700, Request Control Event77
600, User Request Event78
500, Power on Event79
-400 to -499, Query Errors80
-300 to -399, Device-Specific Errors81
-221 Settings Conflict Errors84
-200 to -299, Execution Errors94
-100 to -199, Command Errors102
Error105
Condition Errors 1 to 99, Calibration106
Condition Errors 6 to 34, Calibration Skipped106
Condition Errors 36 to 64, Calibration Needed or Failed107
Condition Errors 65 to 92, Calibration Needed (Extended)108
Condition Errors 67 to 95, Calibration Failure (Extended)109
Condition Errors 101 to 199, Measurement Integrity110
Condition Errors 201 to 299, Signal Integrity112
Condition Errors 301 to 399, Uncalibrated Integrity116
Condition Errors 401 to 499, Power119
Condition Errors 501 to 599, Frequency120
Condition Errors 601 to 699, Error Summaries121
Condition Errors 701 to 799, Operation122
Condition Errors 801 to 899, Temperature123
RF Section Troubleshooting125
What You will Find in this Chapter126
RF Assembly Description127
Purpose127
RF Section Theory of Operation128
Input Attenuator128
Low Pass Filter128
Preselector Filters128
Mixer128
1St if Amplifier128
1St if Filter128
2Nd lo128
2Nd if Amplifier129
2Nd if Filter129
Step Attenuator129
3Rd lo129
3Rd if Amplifier129
3Rd if Filter129
Burst Carrier Trigger129
Troubleshooting130
Verifying the 50 Mhz Calibrator Signal131
Verifying the 22.5 Mhz if Signal133
Verifying the 300 Mhz L.O. Input Power134
Digital if Troubleshooting135
What You will Find in this Chapter136
Digital I.F. Assembly Description137
A3 Digital I.F. Assembly Theory of Operation138
A3 Digital I.F. Troubleshooting140
Verifying the 22.5 Mhz Input Power140
Verifying the 10 Mhz Reference Input142
Synthesizer/Reference Troubleshooting145
What You will Find in this Chapter146
A9 L.O. Assembly Description147
Purpose147
A9 L.O. Assembly Troubleshooting148
Verifying the 1St L.O. Output Power149
Verifying the Reference Signal150
Cpu/Disk Drive Troubleshooting151
What You will Find in this Chapter152
A3 CPU Description153
Disk Drive153
Front Panel Interface153
Graphics Controller153
Power Supply Control153
Rear Panel Connectivity153
System Memory154
System Processor154
A4 Hard Disk Drive155
Overview156
Troubleshooting Software Related Issues157
Reloading the X-Series Software158
Hard Drive Recovery Process159
Agilent Recovery System159
Using the Instrument Recovery System160
Replacing the Instrument Hard Disk Drive160
Power Supply/Midplane Troubleshooting161
What You will Find in this Chapter162
A5 Power Supply Description163
Purpose163
Power Supply Theory of Operation164
A5 Power Supply Basic Troubleshooting (Cover On)168
A6 Midplane Description169
Purpose169
A6 Midplane Assembly Troubleshooting171
Front Panel/Motherboard Troubleshooting173
What You will Find in this Chapter174
A7 Motherboard Description175
Purpose175
A7 Motherboard Troubleshooting176
A1 Front Panel Assembly177
A1A2 Front Panel Interface Board177
A1A3 Lcd177
A1A4 LCD Inverter Board177
A1A5 Front Panel USB Interface Board177
Block Diagrams179
What You will Find in this Chapter180
Block Diagrams181
RF Block Diagram182
L.O. Synthesizer & Reference Block Diagram183
Synthensizer & Reference Block Diagram183
Digital I.F. Block Diagram184
CXA Computer Block Diagram185
Service and Diagnostics Menus187
Overview188
Controlling Access188
Secure Service Access188
Menus189
Service Key Descriptions192
Service192
Timebase193
Corrections194
Band Lock196
LO Band Lock197
Align198
Replaceable Parts201
What You will Find in this Chapter202
How to Order Parts203
Replaceable Parts204
Hardware209
Assembly Replacement Procedures225
What You will Find in this Chapter226
Before Starting227
Safety227
Tools You will Need228
Adjustments Tests after an Instrument Repair228
Major Assembly Locations229
Instrument Outer Case230
Standard Instrument230
Option PRC232
Top Brace and Reference Bracket235
Removal235
Replacement235
RF Assembly236
Removal236
Replacement237
Rear Panel238
Removal238
Replacement238
Assembly239
Removal239
Replacement240
Power Supply Assembly241
Removal241
Replacement242
CPU Assembly243
Removal243
Replacement243
Hard Disk Drive244
Installation Procedure244
Powering on the Instrument249
Accepting the End-User License Agreement (EULA) Screen249
Setting System Date and Time251
Utilities, Adjustments, and Performance Verification Tests251
Additional Tasks252
DIF Assembly254
Removal254
Replacement254
Midplane Assembly255
Removal255
Replacement256
Motherboard Assembly257
Removal257
Replacement260
Fan Assembly262
Removal262
Replacement264
Input Connector Assembly265
Removal265
Replacement266
Front Frame Assembly267
Removal267
Replacement268
Bail Handle Removal (Option PRC)269
Front Frame Assembly Components270
Post-Repair Procedures277
What You will Find in this Chapter278
Before Starting278
Post-Repair Procedures279
Calibration File Backup282
BIOS Setup Changes283
Functional Tests289
Functional Test Versus290
Performance Verification290
Before Performing a Functional Test291
Test Equipment292
Displayed Average Noise Level (DANL)294
Procedure294
Frequency Readout Accuracy296
Procedure297
Second Harmonic Distortion (SHD)298
Test Limits298
Procedure299
Amplitude Accuracy at 50 Mhz300
Procedure301
Testing Preamp Option (P03, P07)303
Frequency Response (Flatness)304
Procedure305
Frequency Response (Flatness), Preamp on307
Procedure308
Scale Fidelity310
Procedure311
Instrument Software313
What You will Find in this Chapter314
Instrument Software Overview315
Software Licensing316
Software Updates317
Instrument Measurement Application Software317
89601 VSA Software317

Keysight N9000A - Page 217

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