Manuals / Anritsu / Computer Equipment / Network Router

Anritsu 373XXA manual REF a

Models: 373XXA

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Page 142

TEST SET MODULE ASSEMBLIES

REMOVE AND REPLACE

NOTE

The matching pin numbers are identified on the cable con- nectors and on the connector body.)

Step 4. Repeat Step 3 for the TEST B and REF B cable connectors.

Step 5. Remove the nine screws that fasten the Buffer Amplifier/Sampler assembly to the test set tray, and lift the assembly from the Test Set Module.

To replace the Buffer Amplifier/Sampler assembly, perform the steps above in the reverse order.

Switched Doubler Use the following procedure to remove/replace the Switched Doubler Module Assembly Module (SDM) assembly for Model 37269B.

Procedure:

Step 1. Disconnect the SDM power cable from connector J17 of the A17 Motherboard PCB. Free cable from cable clip, as neces- sary.

	Connector Body	TEST A
A31J8	Connector Body	Connector Body

		J7
J6
J5	REF A	TEST A
W145

W132
J4	REF B	TEST B
J3		J2
		J2

J1

A31J10

REF A

TEST A

Figure 8-14.A31 Buffer Amplifier/Sampler Assembly, Details

8-28

373XXA MM

Image 142

Anritsu 373XXA manual REF a

Contents

Model 373XXA Vector Network Analyzer Maintenance Manual Warranty Table of Contents, Narrative Index Table of Contents, Detailed Replaceable Subassemblies and Parts · · · · · · · Checking the Service LOGVerification Procedure Peripherals and InterfacesSystem has Error Code System does not POWER-UP ·System does not BOOT-UP Associated Information in this ManualA21A2 Adjustment RF POWER/ALC CALIBRATION·A8 Adjustment 37397A LO 2 Calibration ·Floppy Disk Drive · Rear Panel Assembly A9 PCB Bbram Chip · A9 PCB Sram Battery ·Front Panel Assembly Power Supply Module · A18 Rear Panel PCB ·Introduction · Operational Error Messages · Signal Source ModulesIntroduction · Diagnostics Menus Disk Related Error MESSAGES·Introduction · Precautions REPAIR/ Maintenance ·Page Chapter General Information Table of Contents Series 373XXA Vector Network Analyzer System Chapter General Information Related Manuals System Description General InformationSystem Description Standard OptionsService Strategy 8SERVICE StrategyService Support General Information 9SERVICE SupportGeneral Information Service Support ND37200A-2, Field Service KitVerification Kit Model NistPerformance Specifications Recommended Test Equipment General Information Anritsu B39553General Information Recommended Test Equipment Anritsu T1147-2Additional Precautions Static Handling General InformationChapter Replaceable Parts Table of Contents Page Chapter Parts Ordering Parts Ordering InformationReplaceable Parts InformationReplaceable Parts Parts Ordering Information Assembly / Part 373XXA Model / Option Part Number Assembly / Part Part NumberND44606 D45243 Major Assemblies Location Diagram Top 34 View Major Assemblies Location Diagram Bottom View Not 37397A Major Assemblies Location Diagram Bottom View 37397A Signal Source Parts Location Diagram Chapter Operational Tests Table of Contents Page 373XXA Procedure Checking the Service LOG Operational TestsService LOG 2CHECKINGStep 3SELF TestTo start the self test If self test fails4PERIPHERALS Peripherals and Interfaces Operational TestsInterfaces Operational Tests Peripherals and Interfaces Equipment RequiredPrinter Test Fixture Anritsu PN B39553 Gpib Interface Signal Path Operational Tests 5SIGNAL PathChapter Performance Verification Table of Contents 373XXA MM Measurement CalibrationConditions 3MEASUREMENT Measurement AccuracyPerformance Verification AccuracyProcedure Performance Verification Verification Procedure4VERIFICATION 5KEY System KEY System ParametersParameters Measurement Procedure Performance Verification KEY System ParametersPage Chapter Troubleshooting Table of Contents Page Information in this AssociatedManual POWER-UP Recommended Test Equipment TroubleshootingSystem does not Troubleshooting System does not POWER-UP Location of Connectors for Power Supply Voltage ChecksSystem does not POWER-UP Troubleshooting BOOT-UP Troubleshooting System does not BOOT-UP5SYSTEM does not System does not BOOT-UP Troubleshooting Hard Disk Utilities 6SYSTEM has Error System has Error Code TroubleshootingProblems Screen DisplayTroubleshooting System has Error Code Failure Failed Assembly Suffix Failure Mode Description SYSSee Sheet From Sheet 1 From Sheet 7SOURCE/TEST Signal Source PhaseSOURCE/TEST SET/RECEIVER SET/RECEIVERError Codes Possible Failed Assemblies SOURCE/TEST SET/RECEIVER TroubleshootingCodes LO1 Test SET Module Band Start StopInterface PERIPHERALS/ Interface8PERIPHERALS CRT Display Test9MEASUREMENT Measurement in Question TroubleshootingQuestion Troubleshooting Measurement in Question Conditions Check List ing itemsFrequency SQM SDM Out Wire Color Below 38 GHz Above 38 GHzWire Color Forward Reverse Buffer AmpTroubleshooting Signal Paths SDMSignal Paths Troubleshooting SQMChapter Adjustments Contents Page Calibration Procedure Equipment RequiredLO1 Calibration Post CalibrationIf calibration passes AdjustmentsLO 2 Calibration If calibration failsFrequency Calibration Adjustments4FREQUENCY Frequency Calibration 373XXA VNA RF POWER/ALC Calibration 5RF POWER/ALCAdjustments RF POWER/ALC Calibration GHz Power Sensor Setup ProcedureVNA Anritsu ML24XXA 6SOURCE Lock Adjustments Source Lock ThresholdThreshold OLD Calibration Adjustments A8 Adjustment 37397A 7A8 AdjustmentA21A2 Adjustment 37397A 8A21A2 AdjustmentA21A2 Adjustment 37397A Chapter System Description Table of Contents Page System Overview System Overview System DescriptionSystem Description System Overview PcbsSystem Overview System Description Source3ANALOG Subsystem Signal Source ModuleAnalog Subsystem Assemblies AssembliesAnalog Subsystem Assemblies System Description Analog Subsystem Assemblies System Description Analog Subsystem Assemblies Digital Subsystem Assemblies A9 Main Processor PCB Assembly4DIGITAL Subsystem Digital Subsystem Assemblies System Description PCBPCB Assembly Main Chassis Assemblies 5MAIN ChassisMain Chassis Assemblies Voltage Assemblies Where Used 19/7-20 Chapter Remove and Replace Procedures Table of Contents Remove / Replace Signal Source Module Assemblies · Remove / Replace Test SET ModuleChapter Remove and Replace Procedures Equipment Required3COVERS CoversRemove and Replace PreliminaryRemove and Replace CoversPcbs A1 A9 PCBs ProcedureA13 A16 PCB’s Procedure 5A9 PCB Bbram ChipA1-A9 and A13-A16 PCB Assemblies Removal Diagram Remove and Replace A9 PCB Bbram ChipPost Replacement Procedure Remove/Replace ProcedureA9 PCB Bbram Chip Remove and Replace Location of Bbram Chip on the A9 PCB A9 PCB Sram Battery Remove and Replace A9 PCB Sram Battery Recall Or SaveTerminator PCB AssemblyA24 VME BUS Terminator PCB 8FRONT PanelFront Panel Assembly Removal of Front Panel AssemblyVGA Display Monitor 9VGA Display MonitorLocation of Internal VGA Monitor Assembly Mounting Screws Remove and Replace VGA Display MonitorLiquid Crystal Liquid Crystal Display LCDDisplay LCD Lamp Floppy Disk Drive10ALCD Backlight 11FLOPPY Disk DriveLocation of Floppy Disk Drive Assembly Mounting Plate Screws Floppy Disk Drive12REAR Panel Rear Panel AssemblyEquipment Required Option 11 only Rear Panel Assembly Power Supply FAN AssemblyFAN Assembly ModuleA18 Rear Panel PCB Remove and Replace A18 Rear Panel PCB Test BA18 Rear Panel PCB Remove and Replace Test SET Module Assemblies 16TEST SET ModuleTest SET Module Assemblies Remove the Power Amplifier assembly see previous paragraph REF a 17SIGNAL Source Remove and Replace Signal Source ModulesModules Signal Source Modules 15.Signal Source Module Removal Details 16.Signal Source Module Assemblies Removal Details A21A1 Source YIG Bias Control PCBRemove and Replace Signal Source Modules Signal Source Modules Appendix a Diagnostics Menus Table of Contents Page Appendix a Diagnostics MenusRead Service Log Start Self TestDiagnostics Menus Appendix a Appendix a Diagnostics Menus Page System Description Diagnostics Menus Figure A-1. Diagnostics MenusPage Appendix B Error Messages Table of Contents Page Appendix B Service LOG Error Messages Appendix B Service LOG Error Messages Error Message Description Corrective ActionStandard CAL not Valid for General Floppy Drive Gpib Command Error Descriptions Error Message DescriptionGpib Execution Error Descriptions Table B-3.GPIB-Related Error Messages 3 Table B-3.GPIB-Related Error Messages 4 Table B-3.GPIB-Related Error Messages 5 Gpib Query Error Descriptions Gpib Device Dependent Error Descriptions Table B-3.GPIB-Related Error Messages 8 To D 12 BIT a to D Fail Table B-4.Service Log Error Messages 2 Table B-4.Service Log Error Messages 3 Introduction · Precautions Page 1INTRODUCTION 2PRECAUTIONS Appendix C Connector Maintenance Check ProceduresPin Depth Problems Port Pin Depth Gauge Conn. Type Precautions Appendix CReading Maintenance Appendix C REPAIR/ Maintenance3REPAIR Appendix D Performance Specifications Page Appendix D Performance Specifications Appendix D Measurement Time vs. Span for 101 Data Points typi- calDistance 0.1 ∝ m SWR 1 pU Power 0.05 dB Display CapabilitiesPower Range High Stability Time Base Option Harmonics & Harmonic RelatedStandard Time Base AccuracyHard Copy Data Transfer Speed with or without cal 150 kbytesThroughput Times ms without Correction typical 37300A Rear Panel Connectors and ControlsThroughput Times ms with Correction typical Main Lobe Width null \ null in ns = Standard 3650 SMA/3.5 mm Calibration Kit Connector Calibration KitOption ES GPC-7 Calibration KitFlexible Test Port Cables 3671V50-2 Universal Test Port Converter On Each SideModel 37347A K Connectors Reflection Measurements Model 37369A K Connectors Reflection Measurements 15/D-16 Appendix E Performance Verification Software User’s Guide Page Subject Index Page A9 PCB Bbram Chip A9 PCB Sram BatteryRear Panel PCB Calibration and Measurement CondiTo P Index Index To S