Agilent Technologies 5071A manual Advisory Messages Subsection, Power-Supply Diagnostic Tree

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Assembly-Level Service

Service

1.4.4.2.1A1C4 Voltage Test Procedure

Option 048: The QUESTION, is changed to:

Is the voltage between 45 and 51 Vdc?

1.4.4.3LF1/T1 Transformer Fault Verification Option 048: Step 2 text is changed to:

Verify presence of 33 - 47 Vrms.

The QUESTION: is changed to:

Is the voltage between 33 - 47 Vrms?

The T1 part number within If No response text to the QUESTION., is changed to:

(9100-5134)

Advisory Messages (Subsection 7)

1.7.1Advisory Message Interpretation

Any TCO Option: Advisory Message: “SAW Osc unlocked” is deleted,

Functional-Group Diagnostic Trees

(Diagnostic Section 2)

Option 048:

Option 048:

Option 048:

1 Power-Supply Diagnostic Tree: 2.1.1.1.0

The bulleted item “B1 24V Internal-Standby Battery” on page 2-45 is deleted.

Power-Supply Diagnostic Tree

(Functional Group Subsection 1)

The bulleted item “B1 24V Internal-Standby Battery” on page 2-46 is deleted.

2.1.1.1.1 A12 Power Input Test

Step 2 4 text is changed to:

Verify that the voltage present is between 45 and 51 Vdc with no more than 1 Vrms ripple.

The second sentence of the If No response to the first QUESTION: is changed:

b)Verify that the voltage present is between 45 and 51 Vdc with no more than 1 Vrms ripple.

2-6

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Contents 7HOHFRPPXQLFDWLRQV2SWLRQV Page Telecommunications Options Supplemental Manual Before Cleaning Manual Updating Changes 05071-90042, December Contents Service Supplemental Characteristics Available Accessories and OptionsContents How to Use This Manual Instrument IdentificationHow to Order Manuals Instruments Covered by This manualManual Organization Operating and Programming Introducing the 5071A 5071A Major FeaturesIntroduction Operating The 5071A5071A at a Glance ConnectorsGetting Started Rear-Panel Connections5071A Rear Panel Connections Fuse Performing Basic Tasks Powering Down the 5071AStarting The 5071A Synchronizing to an External 1 PPS ReferenceUsing the 5071A Disabling the Internal -Standby BatteryMonitoring Status Case of Difficulty Front-Panel Indicators and MessagesRear-Panel Output Connectors Restarting the 5071AScpi Subsystem Commands 5071A Command References5071A Command Summary Scpi CommandsSpecifications Operating the 5071A From External Dc Power InstallationPower Requirements Preparation for UseLong-Term Storage Internal Standby Battery MaintenanceReplacing the External Dc Input Power Fuse Preparing the RP 5071-A For External-Dc OperationAssembly-Level Service Rear-Panel Output Signal Checks Performance Tests5071A Operational Verification Service Assembly Identification and Location Option Top-Level Diagnostic Tree Organization Top-Level Diagnostic Tree Diagnostic SectionFirst Power On Warm-up and Fatal Error Diagnostic Tree Power-Supply Diagnostic Tree Advisory Messages SubsectionNo Operation From Internal Standby Battery Ac-Line Fuse Fault Isolation r/o LF1/T14.0.0 Ext. Dc Input Fuse Fault Internal-Battery Charger Test4 A8 Front/Rear-Panel Sync Input Test Assembly/Module Diagnostic Trees Diagnostic SectionA8 Diagnostic Tree A/M Subsection 3 1 PPS Outputs Test 5 A8-to-Chassis Interconnect TestA9 Diagnostic Tree A/M Subsection 5.0 A9 Mon Signal Test 6.0 A9 J4 80-MHz Signal Test4.1 A9-to-Chassis TCO Option signal Interconnect Test Simplified Functional Description Theory of OperationIntroduction A1 Motherboard Circuit DescriptionPower Supply Block Functional Block DescriptionsInput/Output Block Operating Firmware Warning Mode Instrument Control BlockReference Oscillator/RF-Chain Block Interconnections Power Supply Block A1 Motherboard Circuit Description Overvoltage Protection CircuitExternal Dc Input Circuit A11 Power Steering Logic Assembly A1 Power Supply/Distribution Schematic Diagram48V Subpanel Assembly Input Chassis GroundB1 Internal-Standby Battery A1 Power-Supply Block DiagramReplaceable Parts Exchange AssembliesReplaceable Parts Backdating Backdating Specifications Time Standard Supplemental CharacteristicsInternal Standby Battery Nominal Values EnvironmentalWeight Accessories Furnished Dc input connectorAvailable Accessories and Options OptionsService and Support From front matter Declaration of Conformity Page Page Manual Part Number