HP TM 11-6625-2779-14&P manual Replaceable Parts, PC Board Assy function

Page 55

Section VI

 

 

 

 

Model 3555B

 

 

 

Table 6-1. Replaceable Parts

 

 

 

 

 

 

 

 

 

 

REFERENCE

-hp-

TQ

DESCRIPTION

MFR.

MFR. PART NO.

 

DESIGNATOR

PART NO.

 

 

 

 

 

A1

03555-66507

1

PC Board Ass'y: function

-hp-

 

 

C1

0170-0055

1

C: fxd mylar 0.1uF +/-20% 200 vdcw

56289

192P10402-PTS

 

C2.C3

0180-0089

2

C: fxd Al elect 10uF +50% -10% 150 vdcw

56289

30D106F150DD2-DSM

 

C4

0121-4105

3

C: var 9-35pF

72982

538-00694D

 

C5*

0160-0205

2

C: fxd mica 10pF +/-5%

72136

RDM15C100J5S

 

C6

0160-2206

1

C: fxd mica 160pF +/-5%

72136

RDM15F161J3C

 

C7

0121-0105

 

C: var 9-35pF

72982

53830694D

 

C8*

0140-0204

1

C: fxd mica 47pF +/-5%

72136

DM15E470J0500W1CR

C9*

0140-0193

1

C: fxd mica 82pF +/-5%

72136

RDM15E82OJ3C

 

C10

0160-0763

1

C: fxd mica 5pF 10%

14655

RDM15C050K5S

obd

R1

0698-0090

2

R: fxd met flm 464 ohms +/-1% 1/2W

91637

MFF-1/2-T-1

obd

R2

0811-2846

2

R: fxd ww 300 ohms +/-1% 1/2W

-hp-

 

 

R3

0684-2211

3

R: fxd comp 220 ohms +/-10% 1/4W

01121

CB2211

 

R4

0811-2847

2

R: fxd ww 67.5 ohms +/-1% 1/2W

-hp-

 

 

R5,R6

0698-3499

2

R: fxd met flm 40.2 kilohms +/-1% 1/8W

91637

MF-1/10-32

obd

R7

0698-4508

1

R: fxd met flm 78.7 kilohms +/-1% 1/8W

14674

C4

obd

R8

0698-4467

1

R: fxd met flm 1.05 kilohms +/-1% 1/8W

91637

MF-1/10-32

obd

R9

0698-0090

 

R: fxd met flm 464 ohms +/-1% 1/2W

91637

MFF-1/2-T-1

obd

R10

0811-2846

 

R: fxd ww 300 ohms +/-1% 1/2W

-hp-

 

 

R11

0684-2211

 

R: fxd comp 220 ohms +/-10% 1/4W

01121

CB2211

 

R12*

0684-4711

1

R: fxd comp 470 ohms +/-10% 1/4W

01121

CB4711

 

R13

0811-2794

1

R: fxd prec ww 25 kilohms 5%

-hp-

 

 

R14*

0684-2211

 

R: fxd comp 220 ohms +/-10% 1/4W

01121

CB2211

 

R15

0757-0472

3

R: fxd met flm 200 kilohms +/-1% 1/8W

75042

CEA

obd

R16

0811-2847

 

R: fxd ww 67.5 ohms +/-1% 1/2W

-hp-

 

 

R17

0683-1505

1

R: fxd 15 ohms +/-5% 1/4W

01121

CB1505

 

S1

3100-1793

1

Switch Ass'y: pushbutton

71590

1332

obd

T1

9100-1458

1

Transformer: carrier frequency

-hp-

 

 

T2

9100-1460

1

Transformer: audio

-hp-

 

 

W1

03555-61616

1

Cable Ass'y: function

-hp-

 

 

A2

03555-66509

1

PC Board Ass'y: range switch

-hp-

 

 

C1

0121-0128

4

C: var 1.4-9.2pF air trim

74970

189-503-5

 

C2

0160-0196

2

C: fxd mica 24pF +/-5%

72136

RDM15C240J3S

 

C3

0160-2130

4

C: fxd mica 865pF +/-1% 100 vdcw

72136

RDM15F(865)F1C

 

C4

0121-0128

 

C: var 1.49.2pF air trim

74970

189-503-5

 

C5

0160-0196

 

C: fxd mica 24pF +/-5%

72136

RDM15C240J3S

 

C6

0160-2130

 

C: fxd mica 865pF +/-1% 100 vdcw

72136

RDM15F(865)F1C

 

C7

0121-0128

 

C: var 1.4-9.2pF air trim

74970

189-503-5

 

†C8

0160-2307

1

C: fxd mica 47pF 5%

00853

RDM15E470J3C

 

†C9

0160-3482

1

C: fxd mica 430pF 1% 300 vdcw

14655

RDM15F431F3C

 

†C10

0160-3586

1

C: fxd mica 43pF 300 vdcw

72136

RDM15E4300D3C

 

†C11

0160-3083

1

C: fxd mica 62pF 1% 500 V

72136

RDM15D620F5C

 

C12

0121-0128

 

C: var 1.4-9.2pF air trim

74970

189-503-5

 

R1

0698-7330

2

R: fxd flm 96.84 kilohms +/-0.1% 1/8W

91637

CMF-1/10-32

obd

R2

0698-7329

2

R: fxd met firm 3.266 kilohms +/-0.1% 1/8W

91637

CMF-1/10-32

obd

R3

0684-2701

2

R: fxd comp 27 ohms +1-10% 1/4W

01121

CB2701

 

R4

0698-7330

 

R: fxd flm 96.84 kilohms +/0.1% 1/8W

91637

CMF-1/10-32

obd

R5

0698-7329

 

R: fxd met firm 3.266 kilohms +/-0.1% 1/8W

91637

CMF-1/10-32

obd

 

 

 

 

 

 

 

† See backdating in Appendix C.

6-2

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Contents HEADQUARTERS, Department of the Army NSN Reporting Errors and Recommending ImprovementsTM 11-6625-2779-14&P Technical Manual Headquarters Department of the ArmyReplaceable Parts List of Tables List of IllustrationsIii Section Introduction Maintenance Forms, Records, and ReportsScope Destruction of Army Electronics Materiel Administrative StorageReporting Equipment Improvement Recommendations EIR Items Comprising an Operable Equipment Voice Frequency Level Measurements 20Hz to 20kHz SpecificationsSection General Information Introduction SectionBAL Modification Accessory Equipment SuppliedAccessory Equipment Supplied Instrument IdentificationBattery Section Installation InspectionWarranty Exception Power RequirementsCover Removal Installation and Removal of BatteryOperating Instructions Controls Connectors IndicatorsBattery SectionFront Panel Controls, Indicators, and Connectors Front, Side and Rear Pane Side Panel Controls and Connectors Level Measurements Level and Noise MeasurementsPage Noise Measurement Applications Recorder CompatibilityRecorder Compatibility Chart Crosstalk Correction Factor Identifying Noise CharacteristicsTransmission Loss Measurements Crosstalk MeasurementsMeasurements in DBC 135 BAL Reinstall the set in its case0dBm Input jacks are connected in parallel. If a 600 ohmLevel Measurement Noise Metallic Measurements Step ProcedureTransmission Loss Measurement Noise-to-Ground Measurements Balance MeasurementRecorder Calibration ExampleSection Theory of Operation Introduction Block Diagram DescriptionSimplified Dial BAT Function Detailed Circuit DescriptionRange Attenuator A2 Input Amplifier A3. Schematic NoPads Used Setting AttenuationFILTERS. Schematic No Range AttenuatorKHz Flat and Program Weighting Curves C-MSG and 1SkHz Flat Weighting Curves DETECTOR. Schematic No Meter AMPLIFIER. Schematic NoPower Supply and Series Regulator Schematic No BAL Conversion Section Maintenance IntroouctionInstrument Recommended Type Required Characteristics Model Factory Selected ValuesTMS, Term Performance ChecksLevel Accuracy Checks Function CARRIER, 75 Unbal30Hz to 1MHz 100Hz to 600kHz 1MHz to 3MHz Unbal Carrier Accuracy CheckRange Frequency20Hz to 20kHz 40Hz to 15kHz 100Hz to 20kHz 100Hz to 15kHz Return Loss CheckReturn Loss Test Set-Up Filter Response Checks Filter Response ChecksMSG dBm 3kHz Flat dBm 15kHz Flat dBm Program dBm Input TMS Brdg Input BalanceBridging Loss TMS BrdgAttenuator Calibration Adjustment and Calibration ProcedurePower Supply Check Unbal CalibrationCommon Mode Adjustment Frequency Response AdjustmentBalance Check Troubleshooting Procedures Assembly RemovalFilter Calibration Troubleshooting Tree Dial BAT Front Panel Trouble AnalysisFront Panel Trouble Analysis Contd Front Panel TroubleshootingFunction Troubleshooting Range TroubleshootingDefective Function Troubleshooting Input AmplifierFilter Troubleshooting Troubleshooting the Meter Amplifier and DetectorBrdg Term Function Switch Resistance ValuesFunction Input Jacks DIAL/AC MON Jacks Tip to Ring Tip to Ground Ring to Ground10. Resistance Checks 11. Factory Selected ValuesRange dBm Pin 1 to Pin 2 to Carrier 135 BAL Level Accuracy Check Performance Check Test CardDescription Check Carrier 75 Unbal Level Accuracy CheckCarrier 600 BAL Level Accuracy Check Performance Check Test Card ContdBridging Loss Check Return Loss CheckFilter Response Checks MSG ProgramOrdering Information Section Replaceable Parts Introduction03555-66507 PC Board Assy function Replaceable Parts03555-66508 Board Assy amplifier Replaceable Parts ContdA3 Contd 03555-66506 PC Board Assy filter A4 Contd Chassis Mounted Components Miscellaneous Chassis Mounted Components ContdMiscellaneous Contd National Stock Number Replacement National Part Stock Number FscmPart Number National Stock Number Cross Reference Index FscmPage Model 3555B Appendix a Code List of Manufacturers Reference Designations Circuit DiagramsFunctional Block Diagram Schematic DiagramsSection Model 3555B 7-4 Functional Block Diagram7-6 A1 Function Assembly Schematic and Component Location7-8 7-10 A4 Filter Schematic and Component Location11/7-12 References Appendix aColumn Entries Maintenance Allocation Section I. Introduction GeneralMaintenance Function Appendix BRemarks Sec Tool and Test Equipment Requiremen ts SecAudio Level Meter TA-885/U REF Code Number TM 11-7725-2779-14&PManual Backdating Changes Appendix CTransmission and Noise Measuring SET Government Printing Office 1980-603-128/66 Delete CR6 across M1Active Army General, United States ArmyChief of Staff Major General, United States Army Adjutant GeneralPage PIN
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