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Agilent Technologies 2948, 2712A manual Front Panel Assembly, 2923A and above

Models: 2712A 2948

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Model 8904A

Replaceable Parts

Figure 6-3.Front Panel Assembly, (2923A and above)

reu.30NOV89

6-24.3

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Agilent Technologies 2948, 2712A manual Front Panel Assembly, 2923A and above

Contents

Innovating the HPWay Agilent TechnologiesCopyright@ HEWLETT-PACKARD Company Multifunction SynthesizerRegulatory Information Safety Considerations Safety Considerationsfor this Instrument Product Markings Contents Reu.200CT88 Service cont’d SectionReference Designationsand Abbreviations Used in this Manual Replaceable Parts ListIntroductionto this Section How to Order Replaceable Parts List Updating Manual UpdatesNable 6-1.Reference Designations AccessAbbreviations 1 ALCAbbreviations 2 Rev.01JUL91 Replaceable PartsDescription Number CodeCAPACITOR-FXD22PF +-5% Poovdc CER 0+-30 Not Assigned Fible 6-3.Replaceable PartsHPPart Description Number Mfr- Mfr. Part Number Code Designation Number Reference HP Part DescriptionMfr Reference HP Part Description Designation NumberReference HP Part Designation Number Me 6-3. Replaceable PartsRev.1 7MAY88 Not Assigned Connector Spin M Post Type DIODE-SWITCHING 80V 200MA 2NS DO45CONNECTOR-RFSMC M PC 5 W H M CONNECTOR-RF SMC M PC W H MReference Mfr HP Part Description Cable 6-3.Replaceable PartsRESISTOR-TRMR 1K 10% C TOP-ADJ 17-TRN RESISTOR-TRMR20K 10% C TOP-ADJ 17-TRN0698-3430 Mfr. Part NumberDescription Mfr Rev.17MAY88IC OP AMP Prcn 8-DIP-C PKG Transistor Array 16-PIN Plstc DIPIC Instm Ampl CUR 10-DIP-P PKG IC OP AMP LOW-BIAS-H-IMPD 8-DIP4 PKGHPPart Description Nble 6-3. Replaceable PartsL e 6-3. Replaceable Parts A10HPPart Miscellaneous PartsBle 6-3.Replaceable Parts Designation Number Code Reference HPPart Description MfrRnftsund Plstem DOME-HD .125DIA Deck AssyRIVET-BUND PL-STEM DOME-HD .125DIA RIVET-BUND Plstem Domehd .125DIANot Separaretlyreplaceable PANEL, Front AYKeypad Punched Shield DisplayQW. Description Reference HPPart Designation NumberQty.Description Designation Code Order by Description Lbble 6-3. Replaceable PartsMfrm Mfr. Part Number Code IZZ-9 Main Deck Assembly Top, 2923A and above Model 8904A Main Deck Assembly Bottom Main Deck Assembly Bottom, Option 006 2948A and above Reu.30NOV89 Front Panel Assembly, 2923A and above Rent Panel Assembly, Option 006 2948A and above Reu.30NOV89 Rear Panel Assembly Rear Panel Assembly, Option 005 2948A and above Rev.30N0 Rev.ZSSEP88 Covers, Labels, and ROMsOutput Cables 1 Output Cables, Option 005 29484 and above 2 Rev.30N0V89 Table of Contents Number 2942A and below Option ConversionsRev.15DEC89 Revision 22987A with HP 08904-8701 0 as A2U12 Instrument ModificationsTitled Hardware Modifications FRONT-TO-REAR-PANELOUTPUT Conversion Description Modification ProcedureParts Required Tools RequiredOperation Verification Fl Channel ConfigRev.15DEC89 Rear-to-Front-Panel Output Conversion REAR-TO-FRONT-PANELOUTPUT ConversionDescription Fl Channel Config Ront Panel Output Hardware Output Cable Routing ALL Options Different function Firmware Updates A2U12 and A2U13Rev.01JUL91 Firmware UpdatesBardware Modifications Serial Prefix 2737A and below Modification for Possible Ground Wire Shock HazardFirmware Updates/Hardware Modifications Parts Location Shown with Power Supply RemovedFirmware Updates/Hardware Modifications Ground Wire WrappingModification for Output Overvoltage Protection Improvement Parts ListHPPartNumber ~~ Qty Description Fixed Resistor, 261 orCabinet Parts Color Change Modification for Potential Power Supply ShortReu.15DEC89 Firmware UpdatesIHardwareModifications 1. Modificationfor Front Panel AssemblyRemoving the Front Panel Installingthe Front Panel Dont-Panel Assembly, 2923A and above Section Service A3 or A10 Output Assembly Phase Synchronization OptionHOW the Section is Organized Safety ConsiderationsBefore Applying Power Iwarning Schematic Symbology and Schematic Diagram Notes Service TOOLS, HELPS, and InformationPin of socket Schematic Diagram Notes 1Schematic Diagram Notes 2 Schematic Diagram Notes 3 Digital Symbology Reference Information Llzble 8-1.Schematic Diagram Notes 4Combinational Logic Symbols and Functions Schematic Diagram Notes 5Schematic Diagram Notes 6 Digital Symbology Reference InformationOnly with D-type flip-flops Gate and Dependency-Binary Schematic Diagram Notes 7Miscellaneous Llable 8-1.Schematic Diagram Notes 8ofSchematic Diagram Notes 9 ServiceActive Levels Schematic Diagram Notes 10Enable Schematic Diagram Notes 11How Waveforms Are Generated Principles of Operation OverallWhat the Multifunction Synthesizer Can Do Channel a Generating Staircases in the Phase Accumulator Output of the Phase Adder for P=O, 1, Further Digital Waveform Processing with Options Freouency SUM Pulse Level Phase @PHASE FreouencyPulse Reu.15DEC89 Principles of Operation Overall Analog Waveform ProcessingInterrelationshipof the Circuit Assemblies Synthesizer PASSY- t General A2 Digital AssemblyTrack-and-Hold Circuit Service Sheet A3 Output Assembly Service Sheets 1 through GeneralDigital-to-Analog Converter Service Sheet Simplified Diagram of the Sampler Drive 10.Simplified Diagram of the Sampler Amplifier Audio Amplifier Service Sheet Low-Pass Filters Service SheetSine X/X CompensationService Sheet 12, and 24 dB Attenuators Service SheetOvervoltage Protectionand Output Circuits Service Sheet Floating Amplifier Driver and On/Off Switch Service SheetFloating Output Amplifier Service Sheet Rev.15DEC89 Troubleshooting General Troubleshooting GeneralEquipment A2 Digital Assembly to A3 or A10 Output Assembly InterfaceProcedure 1. How to Access A3 in Instruments Equipped with Option Serial Prefix Troubleshooting Digital/Output InterfacePeriod Fl Channel ConfigPin Frequency Hz Fl Channel ConfigIC Pin Level Function A3 Key Sequence A10 Key SequenceA3/A10 Connection F3 Memory Map Access Pin Clocks A10J1 and J5 Miscellaneous ControlFl Keyboard Check A2 Digital Assembly to A1 Keyboard Assembly InterfacePin Key Pressed Response lTL AMPTD, Wave FormKey Sequence Annunciator Status IC on A2 Pin Level lTL F3 Memory Map AccessDescription A2 Digital Assembly to A5 Display Assembly InterfaceA3 or A10 Output Assembly Troubleshooting Phase Synchronization Phase SynchronizationoptionHP 8904A Opts After keying in 8 7, the display should be IFirmware Revision 18387A Serial No HP 8904A Opts 02/01 IFirmware Revision 18387A Serial NoAfter keying in 4 8, the display should be Begin again at step Troubleshooting Memory Backup Battery 48.1 HOW to Replace the Memory Backup BatteryTools and Supplies PartsTroubleshooting Memory Backup Battery 48.3 Rev.15DEC89 Troubleshooting Memory Backup BatteryPage N a 12.4. Line Voltage Wiring Harness R300 A3 Component Coordinates 1L0nA Current Source Ipower Supply ConditionersComp A3 Component Coordinates 2Rev.28MAR89 On the A3 schematicSs2 31901 N3AILlO ONV I813IldIll3 JJOlfl3 dWHS15.Service Sheet Information Component Locator Rev.28MAR89 54.1 ChangesAmpto Instrument Settings Measure Aooitions I T I a L Instrument SettingsCoup OUT K2AComponent Coordinates 1 + a56.1 Ss4Ss4 A6 Schematic and Component locator Ss5 0 A3/A10 Output Assembly