A10 CRT Socket Board Front of Board | Tektronix 1705A instruction

A10 CRT Socket Board (Front of Board)

A10 CRT Socket Board (Back of Board)

Schematic Diagram <8> Component Locator Chart

The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram.

Assembly A1. Partial Assembly A1 also shown on Diagram 7.

Comp	Diag	Bd	Comp	Diag	Bd	Comp	Diag	Bd	Comp	Diag	Bd
No	Loc	Loc	No	Loc	Loc	No	Loc	Loc	No	Loc	Loc


C1	C4	A4	CR1	E2	B1	R4	E4	A3	R44	D2	B3
C2	D3	D1	CR2	D4	B3	R5	E5	A3	R45	F2	C4
C3	D3	A2	CR3	E2	B1
C4	D3	A2	CR4	C2	B2	R7	B4	A4	R46	E3	C1
C5	D4	B3	CR5	D2	C3	R8	B4	A4	R47	D2	C3
						R11	F4	A2	R48	C2	C4
C6	C4	B4	CR6	E2	C3	R12	D3	C1	R49	F2	C4
C7	F3	B1	CR7	C2	D4	R20	C4	A4	R50	F2	E1
C8	D3	B2	CR8	C2	D4
C9	E2	B2	CR9	C1	E4	R21	C5	A4	R51	F3	E1
C10	C5	B4	CR30	A2	E2	R22	D5	A4	R52	F2	E1
			CR31	A2	E2	R23	B4	A4	R53	F2	E1
C11	E2	B1				R24	D5	A4	R54	F2	E1
C12	D2	C4	DS1	E2	B2	R25	B4	A4	R55	D2	D4
C13	D2	C4	DS2	E2	B2
C14	D2	C4	DS3	E3	B2	R26	E5	A3	R56	F3	E1
C15	F2	C4				R27	E5	A4	R57	B2	E1
			FIL1	C3	C1	R28	E5	A4	R58	D2	E4
C16	C2	C3	FIL2	C3	C1	R29	D2	B1	R59	B1	E2
C17	F2	D4				R30	D2	A2	R60	C1	E3
C18	F3	E1	J1	F3	B1
C19	C1	D4	J3	F2	D1	R31	D4	B3	R61	D1	E4
C20	C2	D4	J11	F4	A2	R32	E5	B3	R63	A2	E2
						R33	C4	B4	R64	C2	E2
C21	C1	D4	Q1	E5	B3	R34	C4	B4	R65	B1	E3
C22	B2	E2	Q2	E5	A3	R35	D4	B3	R66	B1	E3
C23	B2	E3	Q3	D4	B4				R103	A2	E2
C24	D1	E4	Q4	D4	B4	R36	D4	B3
C25	A3	E2	Q5	C4	B4	R37	C5	B4	T1	B2	C4
						R38	E2	B1
C27	B1	E3	Q6	B2	E1	R39	E2	B1	U1	D1	C1
C28	B1	E3	Q10	A2	E2	R40	D2	B2	U2	B1	F4
C34	D1	F4
C65	B2	F4	R1	E3	A1	R41	D4	B3	VR2	A2	E2
C66	A2	E2	R2	E4	A2	R42	E3	C1	VR5	D2	B2
			R3	E4	A2	R43	E2	B3	VR6	D2	B2

Assembly A10.

Comp	Diag	Bd	Comp	Diag	Bd
No	Loc	Loc	No	Loc	Loc


J1	G4	B1	J3	H4	B3
J2	G3	A1	SKT1	G3	B2

1705A

Image 211

Tektronix 1705A instruction manual A10 CRT Socket Board Front of Board, Schematic Diagram 8 Component Locator Chart

Contents

1705A Spectrum Monitor SN B040000 and Above 070-8222-08 Table of Contents Table of Contents InstallationTheory of Operation 1705A Spectrum Monitor Iii Checks and Adjustments Options Maintenance Replaceable Electrical Parts Replaceable Electrical PartsReplaceable Mechanical Parts 10-1 Simulation of a 1705A Full SPAN/DIV display List of Figures 1705A Spectrum Monitor Vii Considerations for custom installation of an instrument Viii List of Tables General Safety Summary General Safety Summary Service Safety Summary Service Safety Summary Xii Preface InstallationIntroduction Replaceable Mechanical Parts Preface Contacting TektronixUSA Preface Xvi Introduction Page Section Introduction Typical Configurations #73 AccessoriesOptions Introduction Optional Accessories Safety Information SPAN/DIV Spectrum DisplayFull Introduction Spectrum Display Power SourceCRT Display EMC Introduction Environmental CharacteristicsPhysical Characteristics Certifications and Compliances CAT Introduction Certifications and Compliances Meters Applications Earth SUN Satellite Using the 1705A for Satellite Communication SAN Diego Band Input SignalsVancouver BC Seattle Portland Helena Boise SAN Francisco LOS Angeles Zeroing in on a Satellite Tek 12.20 GHZ Frequency and Number Down Link Transponder Horizontal Vertical Polarization GHZ Looking at Exciters with the 70 MHz Input Miscellaneous Uses for the 1705A Input LNB OUTBand Splitter Operating Instructions Page Section Operating Instructions Front-panel Controls and Indicators Display Position PowerOperating Instructions Filter Input SPAN/DIV Variable control that adjusts the display brightness Position Rear- Panel Connectors Spectrum Monitor Holder for the instrument’s mains fuse 1400 MHZ Powering- up 1705A graticule scale Measurement Graticule Reading in dB Reading in dB Voltage Ratio Power RatioVoltage Ratio Power Ratio Operating Instructions DB Reference Operating Instructions DBm to v Conversion Reading in dBm 75Ω 50Ω MID Minimum Maximum FrequencyFrequency Scale = 10 Divisions Sweep Length = 12 Divisions 70 MHZ Center Frequency ReadoutMHZ 1400 MHZ Center Frequency Tuned AT this Point Point on Trace That Corresponds to Customizing Frequency Readout Readout Position Readout ModeOffset Adjust Main Menu 12.00 GHZ Locating Ku- Band Satellites Basic Operating Procedure Satcom K2 G-STAR City 1705A Spectrum Monitor Operating Instructions Page Page Installation Page Electrical Installation Section Installation Cabinet Options Mechanical InstallationInstallation LNB Power Band Input OFF 130 250875 105 Cabinetizing 1700F02 portable cabinet dimensions Cabinet Securing Screws A WFM7F05 with a blank front panel 1700F06 1700F07 1705A Spectrum Monitor Theory of Operation Page Section Theory of Operation Block DiagramOverview Theory of Operation Front Panel Diagram RF Input Diagram If Amplifier Diagram Resolution Filter and Log Detector Sweep Generator Diagram Start Display Deflection Amplifiers Diagram Vertical Deflection Amplifier Microprocessor Diagram Front Panel Diagram High Load LOW Load Average Low Voltage Power Supply Diagram Pulse Width Modulator Theory of Operation High Voltage Power Supply Diagram Axis Amplifier Pinout of the CRT Socket 1705A Spectrum Monitor CRT The pinout for the CRT is shown in Figure Theory of Operation Checks and Adjustments Page Recommended Equipment List Section Checks And AdjustmentsElectrical Instruments Auxiliary Equipment Checks and Adjustments SMA Male-to-bnc Female Adapter Short-Form ProcedurePerformance Check 1705A Spectrum Monitor Long Form Procedure Checks and Adjustments Preliminary Control Settings Page Marker Here Marker is +/-- 1 Minor Division from Here Checks and Adjustments 1705A Spectrum Monitor Page Variable Autotransformer L-BAND Input Marker Here Graticule Line Disregard UHF Sine Wave Generator Page End of the Performance Check Procedure Short- Form Procedure Adjustment Procedure Video SPAN/DIV Full Center Frequency Preliminary Setup Front A3 Main BDA1 PWR Sply BD Tek Shorting Remove the shorting strap 1705A Spectrum MonitorStrap 1705A Spectrum Monitor Page 1705A Spectrum Monitor Page 1705A Spectrum Monitor End of Adjustment Procedure Checks and Adjustments Maintenance Page Cleaning Section Maintenance ECL Schottky SignalLOW Power Schott Cmos Troubleshooting Diagnostic Routines Nonvolatile 2444 RAM Test Reading Data Stored AT 60H to 7F in Processor Error Cannot Read or Write Press Input KEY to Exit Troubleshooting Aids Circuit board assembly locations Major Assembly Interconnection PIN ROW B ROW a Power Supply Fault Symptoms Power Supply Troubleshooting Procedure Low Volts Supply Maintenance Power Supply Fault Symptoms Maintenance Rectifier/Switcher Check High Volts Supply Grid Drive Check Maintenance High Volts Supply Fault SymptomsFocus Amplifier Check Axis Amplifier Check CRT Voltage Check High Voltage Oscillator Check Obtaining Replacement Parts Corrective Maintenance Maintenance Test Selectable Components Mechanical Disassembly/AssemblyBezel Removal Graticule Light Removal and Replacement Replacing the CRT Removal of the CRT Removal of the Rear Panel Removal of Front- Panel Assembly Removing the L- Band Tuner Removal Replacement of the Main Board Removal Replacement of the Power Supply Board Front Removing the LNB Power Supply Board Repackaging 1705A Spectrum Monitor Options Page Section Options Field Upgrade KitsPower Cord Options Power Cord Options Description of power cord Ordering Replaceable Electrical Parts Page Section Replaceable Electrical Parts Using the Replaceable Electrical Parts ListParts Ordering Information Column 3 Column DescriptionsTektronix Part No Column MSD INC Orange ST DARLINGTON, SC Spectrum Control INC Weight STCross Index MFR. Code Number to Manufacturer AMP INC Fulling Mill Harrisburg PA Wilhelm Westerman Zman & AssociatesSobudai Zawa Kanagawa 228 Japan Chrome Shibaura Tokyo Japan 2ND Floor NEW Kyoei MINATO-KU Circuit BD Assymain Board ASSY,1705A Circuit BD Assypower SUPPLY, 1705ACircuit BD ASSY18V Power Supply Circuit BD Assyfront Panel CAP,FXD,CER DI470PF,20%,100V TUBULAR,MI IAL,MICAP,FXD,PLSTC100PF,5%,1600VDC/500VAC IN,BULK A1DS3 LAMP,GLOW135V MAX,1.9MA,C2A-T,WIRE LeadA1DS1 A1DS2 RES,FXD,CMPSN2.2M OHM,5%,0.5W SQ,TOP AdjustbulkSQ,SIDE ADJUSTT&R RES,FXD,CMPSN1.5M OHM,5%,1W RES,FXDMETAL FILM,100K OHM,1%,0.2W,TC=100 RES,FXD,FILM5K OHM,0.1%,0.2W,TC=T9IAL,T&R,SMALL Body REELED,SMALL Body RES,FXD,CMPSN2.4K OHM,5%,2W SQ,TOP ADJUST,T&RWIRED,1705A RES,THERMAL5 OHM,10%,7A/DEG C RES,VAR,PNLCP,20K OHM,20%,0.5W,LINEAR,W LED ASSYDIR1Part of A2DS313 CA ASSY,SP,ELEC34,26 AWG,5.0 L SHIELD,ELEC1705A,BRS BUS,CNDCTPLATE,ELEC Shldcircuit Board SHIELD,ELECCIRCUIT Board CAP,VAR,PLSTC1-3.5PF,500V CAP,FXD,ELCTLT33UF,+50-20%,35WVDCUVX1H330MAA CAP,VAR,CER DI9-45PF,200V DIO,SIGFAST RCVRY70V,200MA,100NS,COM CAP,FXD,MICA DI98PF,5%,500VA3CR1 A3CR2 A3FL3 A3FL1FLTR,BANDPASS A3FL2 COIL,RFFIXED,505NH COIL,RFFIXED,45NHCOIL,RFFIXED,15NH COIL,RFFIXED,64UH GF06UT 2K ADJUSTT&RRES NTWK,FXD,FI10K OHM,20%,9RES GF06UT 5K RES,FXD,FILM237K OHM,1%,0.2W,TC=T0 RES,FXD,FILM115K OHM,1%,0.2W,TC=T0RES,FXD,FILM3.4K OHM,1%,0.2W,TC=T0 RES,VAR,NONWWTRMR,250 OHM,20%,0.5W LIN RES,FXD,FILM7.5K OHM,1%,0.2W,TC=T0 CRB20FXE9K35 RES,FXD,FILM1M OHM.1%,0.2W,TC=T0Percent CRB20FXE1K62 CRB20FXE210E RES,FXD,FILM2.1K OHM,1%,0.2W,TC=T0RES,VAR,NONWWTRMR,100 OHM,20%,0.5W LIN RES,FXD,WW6.3K OHM,1%,3W GF06UT 1K MICROCKT,DGTLMICROCOMPUTER,8 BIT RES,FXD,FILM187K OHM,1%,0.2W,TC=T0Loss 10DB,PKG 7.2MM SQ,6.8MM HI IC,CONVCMOS,A/D8-BIT,32US,SAR,DIFF IN,SER MIXER,FREQ1-500MHZ IC,MISCCMOS,ANALOG Swquad SPST,100IC,LINBIPOLAR,AMPLRF AMP,20DB IC,DGTLTTL,BFR/DRVRHEX INV, OC, HI IAL,MI,T&R CONN,BOXSHUNT/SHORTINGFEM,STR,1 X 2,0.1CTR,0.385 H,30 GLD,BLK,JUMPER TAIL,30 GLD RES,FXD,CMPSN1K OHM,5%,0.50W RES,FXD,FILM267K OHM,1%,0.2W,TC=T0RES,FXD,WW1 OHM,5%,2W Order by Desc COIL,RFFIXED,150NH CONN,HDRPCB/WIREWRAP,MALE,STR,1 X 7,0.15CONN,HDRPCB/WIREWRAP,MALE,STR,1 X 4,0.150 CORE,EMTOROID,FERRITE CA ASSY,SP A10SKT1Controlled 0LUA3 CONN,RF Plug Replaceable Electrical Parts Diagrams/Circuit Board Illustrations Page Component Values Diagrams/Circuit Board IllustrationsSymbols Assembly NumbersPage 1705A Spectrum Monitor A3 Main Board Component Locator With cross-references to schematic diagrams 1, 2, 3, 4, A5 70 MHz Tuner Board A3 Main Board Schematic Diagram 1 Component Locator Chart 1705A Spectrum Monitor RF Input Local Oscillator Schematic Diagram 2 Component Locator Chart 1705A Spectrum Monitor If Amplifier Resolution Filter & LOG Detector Schematic Diagram 3 Component Locator Chart Generator Band LinearityRamp Generator Marker Schematic Diagram 4 Component Locator Chart Buffers DeflectionAmplifier Filter Schematic Diagram 5 Component Locator Chart Trace 1705A Spectrum MonitorMicroprocessor Microprocessor Schematic Diagram 6 Component Locator Chart A2 Front Panel Board 1705A Spectrum Monitor Front Panel & 18V Supply A1 Power Supply Board Component Locator A1 Power Supply BoardSee Parts List for Effective Serial Number Ranges Output Filters SwitcherError Line Rectifier A10 CRT Socket Board Front of Board Schematic Diagram 8 Component Locator Chart Grid Drive Error AMP1705A Spectrum Monitor High Volts Power Supply HV OSCPage Replaceable Mechanical Parts Page Section Replaceable Mechanical Parts Using the Replaceable Mechanical Parts List Indicates actual manufacturer’s part number Qty ColumnReplaceable Mechanical Parts This indicates the quantity of mechanical parts used Nelson Name Plate CO Casitas Panduit Corp RidgelandRichco CHICAGO, IL SCREW,MACHINE6-32 X 0.875,PNH,SST Circuit BD Assypower Supply See A1 Repl Mounting PartsCOVER,HOUSINGALUMINUM FRAME,CRTBEZEL IN/OUT See A6 Repl Mounting Parts HOUSING,CKT BdaluminumFRAME,CHASSISSAFETY Controlled SCREW,MACHINE6-32 X 0.188,PNH,STL CA ASSY,CRTDISCRETE,ANODE LEAD,CRT,1,22 Standard AccessoriesCLAMP,LOOP0.375 ID,PLASTIC,SAFETY CON Trolled Standard only Optional Accessories A10