HP TM 11-6625-2779-14&P manual A3 Contd

Page 57

Section VI

 

 

 

 

 

Model 3555B

 

 

 

Table 6-1. Replaceable Parts (Cont'd)

 

 

 

 

 

 

 

 

 

 

 

REFERENCE

-hp-

TQ

 

DESCRIPTION

MFR.

MFR. PART NO.

 

DESIGNATOR

PART NO.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A3 (Cont'd)

 

 

 

 

 

 

 

CR20

1902-1275

 

 

Diode: zener 6.2V +/-5% 400mW 7.5mA

04713

Type 1N821

 

CR21

1901 0040

 

 

Diode: Si 30 wiv 2pF 30mA 2ns

07263

FDG1088

 

K1 thru K3

0490-0780

3

 

Relay Ass'y: reed

-hp-

 

 

 

0490-0778

3

 

Reeds

95348

MR5830

 

L1

9100-1637

1

 

Inductor: fxd 120uH +/-5%

82142

15-1315-14J

 

Q1

1853-0086

7

 

TSTR: Si PNP 2N5087

04713

SPS-3322

 

Q2, Q3

1853-0036

9

 

TSTR: Si PNP 2N3906

04713

SPS-3612

 

Q4

1854-0215

3

 

TSTR: Si NPN 2N3904

04713

SPS-3611

 

Q5 thru Q8

1853-0036

 

 

TSTR: Si PNP 2N3906

04713

SPS-3612

 

Q9

1854-0215

 

 

TSTR: Si NPN 2N3904

04713

SPS-3611

 

Q10

1853-0036

 

 

TSTR: Si PNP 2N3906

04713

SPS-3612

 

Q11

1855-0057

1

 

TSTR: Si FET N channel Type A

04713

SS-3651

 

Q12

1853-0036

 

 

TSTR: Si PNP 2N3906

04713

SPS-3612

 

Q13

1854-0092

2

 

TSTR: NPN 2N3563

04713

MPS-3563

 

Q14

1853-0049

2

 

TSTR: Si PNP

04713

-hp-

 

Q15

1854-0215

 

 

TSTR: Si NPN 2N3904

04713

SPS-3611

 

Q16

1853-4049

 

 

TSTR: Si PNP

04713

-hp-

 

Q17

1854-0401

1

 

TSTR: NPN

04713

-hp-

 

Q18,Q19

1853-0235

3

 

TSTR: Si PNP 2N3547

12040

NS62048

 

Q20

1854-0022

1

 

TSTR: NPN

01295

SG1294

 

Q21

1853-0235

 

 

TSTR: Si PNP 2N3547

12040

NS62048

 

Q22

1853-0037

1

 

TSTR: Si PNP

04713

2N2904A

 

R1

0757-0334

1

 

R: fxd met flm 301 ohms +/-1% 1/4W

91637

MF-1/8-44

obd

R2

0698-4521

2

 

R: fxd met flm 154 kilohms +/-1% 1/8W

14674

C4

obd

R3

0698-4533

1

 

R: fxd met flm 294 kilohms +/-1% 1/8W

14674

C4

obd

R4

0684-4731

2

 

R: fxd comp 47 kilohms +/-10% 1/4W

01121

CB4731

 

R5

0684-1221

2

 

R: fxd comp 1.2 kilohms +/-10% 1/4W

01121

CB1221

 

R6

0684-1011

5

 

R: fxd comp 100 ohms +/-10% 1/4W

01121

CB1011

 

R7,R8

0684-2241

2

 

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

01121

C82241

 

R9

0684-4721

3

 

R: fxd comp 4700 ohms +/-10% 1/4W

01121

CB4721

 

R10

0684-1011

 

 

R: fxd comp 100 ohms +/-10% 1/4W

01121

CB1011

 

R11

0698-7375

3

 

R: fxd met flm 28.64 kilohms +/-0.1% 1/8W

91637

CMF-1/10-32

obd

R12

0684-1011

 

 

R: fxd comp 100 ohms +/-10% 1/4W

01121

CB1011

 

R13,R14

0757-0273

2

 

R: fxd met flm 3.01 kilohms +/-1% 1/8W

91637

MF-1/10-32

obd

R15

2100-2829

1

 

R: var carbon comp 500 ohms +/-30%

 

 

 

 

 

 

 

1/4W 4 sec type V

71590

Type E8-83716

 

R16

0698-4458

1

 

R: fxd met flm 590 ohms +/-1% 1/8W

14674

C4

obd

R17

0684-1011

 

 

R: fxd comp l00 ohms +/-10% 1/4W

01121

CB1011

 

R18

0684-1041

1

 

R: fxd comp 100 kilohms +/-10% 1/4W

01121

CB1041

 

R19

0698-3154

1

 

R: fxd met flm 4.22 kilohms +/-1% 1/8W

91637

MF-1/10-32

obd

R20

2100-2829

 

 

R: var carbon comp 5 kilohms +/-30%

71590

Type E8-83716

 

R21

0698-3155

1

 

R: fxd metflm 4.64 kilohms +/-1% 1/8W

91637

MF-1/10-32

obd

R22

0698-4405

1

 

R: fxd met flm 107 ohms +/-1% 1i8W

14674

C4

obd

R23

0684-2221

1

 

R: fxd comp 2200 ohms +/-10% 1/4W

01121

CB2221

 

R24

2100-2829

 

 

R: var carbon comp 500 ohms +/-30%

71590

Type E8-83716

 

R25

0698-4014

1

 

R: fxd met flm 787 ohms +/-1% 1/8W

14674

C4

obd

R26

2100-2829

 

 

R: var carbon comp 500 ohms +/-30%

71590

Type E883716

 

R27

0698-4521

 

 

R: fxd met flm 154 kilohms +/-1% 1/8W

14674

C4

obd

R28,R29

 

 

 

Not assigned

 

 

 

R30

0684-3341

1

 

R: fxd comp 330 kilohms +/-10% 1/4W

01121

CB3341

 

R31

0684-1541

3

 

R: fxd comp 150 kilohms +/-10% 1/4W

01121

CB1541

 

R32

0684-1011

 

 

R: fxd comp 100 ohms +/-10% 1/4W

01121

CB1011

 

R33

0684-1221

 

 

R: fxd comp 1.2 kilohms +/-10% 1/4W

01121

CB1221

 

R34

0684-1021

6

 

R: fxd comp 1O000 ohms +/-10% 1/4W

01121

C81021

 

R35,R36

0684-1541

 

 

R: fxd comp 150 kilohms +/-10% 1/4W

01121

CB1541

 

R37

0684-4721

 

 

R: fxd comp 4700 ohms +/-10% 114W

01121

C84721

 

R38

0698-4454

1

 

R: fxd met flm 523 ohms +/-1% 1/8W

91637

MF-1/10-32

obd

R39

0684-3921

3

 

R: fxd comp 3900 ohms +/-10% 1/4W

01121

CB3921

 

 

 

 

 

 

 

 

 

6-4

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Page 56 Page 58
Contents HEADQUARTERS, Department of the Army TM 11-6625-2779-14&P Reporting Errors and Recommending ImprovementsTechnical Manual Headquarters Department of the Army NSNReplaceable Parts List of Illustrations List of TablesIii Maintenance Forms, Records, and Reports Section IntroductionScope Administrative Storage Destruction of Army Electronics MaterielReporting Equipment Improvement Recommendations EIR Items Comprising an Operable Equipment Voice Frequency Level Measurements 20Hz to 20kHz SpecificationsSection General Information Introduction SectionAccessory Equipment Supplied Accessory Equipment SuppliedInstrument Identification BAL ModificationWarranty Exception Section Installation InspectionPower Requirements BatteryCover Removal Installation and Removal of BatteryBattery Controls Connectors IndicatorsSection Operating InstructionsFront 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 Transmission Loss Measurements Identifying Noise CharacteristicsCrosstalk Measurements Crosstalk Correction FactorMeasurements in DBC 0dBm Reinstall the set in its caseInput jacks are connected in parallel. If a 600 ohm 135 BALLevel Measurement Noise Metallic Measurements Step ProcedureRecorder Calibration Noise-to-Ground Measurements Balance MeasurementExample Transmission Loss MeasurementSection Theory of Operation Introduction Block Diagram DescriptionSimplified Dial BAT Function Detailed Circuit DescriptionRange Attenuator A2 Input Amplifier A3. Schematic NoFILTERS. Schematic No Setting AttenuationRange Attenuator Pads UsedKHz 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 Instrument Recommended Type Required Characteristics Model Section Maintenance IntroouctionFactory Selected Values BAL ConversionLevel Accuracy Checks Performance ChecksFunction CARRIER, 75 Unbal TMS, TermRange Unbal Carrier Accuracy CheckFrequency 30Hz to 1MHz 100Hz to 600kHz 1MHz to 3MHz20Hz 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 Bridging Loss Input BalanceTMS Brdg Input TMS BrdgPower Supply Check Adjustment and Calibration ProcedureUnbal Calibration Attenuator CalibrationFrequency Response Adjustment Common Mode AdjustmentBalance Check Assembly Removal Troubleshooting ProceduresFilter Calibration Troubleshooting Tree Dial BAT Front Panel Trouble AnalysisFunction Troubleshooting Front Panel TroubleshootingRange Troubleshooting Front Panel Trouble Analysis ContdFilter Troubleshooting Troubleshooting Input AmplifierTroubleshooting the Meter Amplifier and Detector Defective FunctionFunction Input Jacks DIAL/AC MON Jacks Function Switch Resistance ValuesTip to Ring Tip to Ground Ring to Ground Brdg Term11. Factory Selected Values 10. Resistance ChecksRange dBm Pin 1 to Pin 2 to Description Check Performance Check Test CardCarrier 75 Unbal Level Accuracy Check Carrier 135 BAL Level Accuracy CheckCarrier 600 BAL Level Accuracy Check Performance Check Test Card ContdFilter Response Checks MSG Return Loss CheckProgram Bridging Loss CheckOrdering 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 Part Number National Stock Number Cross Reference Index Replacement National Part Stock Number FscmFscm National Stock NumberPage Model 3555B Appendix a Code List of Manufacturers Functional Block Diagram Circuit DiagramsSchematic Diagrams Reference DesignationsSection 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 aMaintenance Function Maintenance Allocation Section I. Introduction GeneralAppendix B Column EntriesRemarks Sec Tool and Test Equipment Requiremen ts SecAudio Level Meter TA-885/U REF Code Number TM 11-7725-2779-14&PAppendix C Manual Backdating ChangesTransmission and Noise Measuring SET Government Printing Office 1980-603-128/66 Delete CR6 across M1Chief of Staff General, United States ArmyMajor General, United States Army Adjutant General Active ArmyPage PIN
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