AN-PRC-47_serv_TM11-5820-509-35_1974.pdf

《AN-PRC-47_serv_TM11-5820-509-35_1974.pdf》由会员分享，可在线阅读，更多相关《AN-PRC-47_serv_TM11-5820-509-35_1974.pdf（590页珍藏版）》请在收音机爱好者资料库上搜索。

1、TM 11-5820-509-35 TECHNICAL MANUAL DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS RADIO SET AN/PRC-47 This copy is a reprint which includes current pages from Changes 1 and 2. HEADQUARTERS DEPARTMENT OF THE ARMY NOVEMBER 1974 WARNING Avoi

2、d contact with the high-voltage circuits and the antenna terminal of the radio transmitter-receiver while performing trouble isolation procedures personal injury may result. WARNING The 650- and 1500-volts potentials at the power amplifier screen and plate electrodes are extremely dangerous. Avoid c

3、ontact with these circuits. WARNING Place the POWER-LIGHTS switch to POWER OFF, disconnect the primary power source cable from the front of RT-671/PRC-47, and discharge the plate circuit capacitors and high-voltage filter capacitors in the power supply before proceeding with the following test. Pers

4、onal injury or death can result from these dangerous voltages. WARNING Avoid contact with the high-voltage circuits of Signal Data translator CV-1377A/PRC-47 (A3), Power Supply PP-3518/PRC-47 (A5). and in the power amplifier compartment. These voltages can cause personal injury or death. WARNING Bef

5、ore removing any equipment cover or module from Radio Receiver-Transmitter RT-671/PRC-47, disconnect all power from the unit. WARNING High voltages are present in the circuits associated with Signal Data Translator CV-1377A/PRC-47, Power Supply PP-3518/PRC-47, and the power amplifier compartment. Th

6、ese voltages are dangerous and can cause personal injury or death. Ground the two high-voltage terminals on the main chassis (J1- A1 and J1-A2) to discharge the capacitors in the high voltage circuits before beginning maintenance within the chassis or inside any module. WARNING Before further disass

7、embly, short-circuit connector pins P1-A1 and P1-A2 to ground to discharge the high-voltage filter capacitors. Personal injury or death can result from these voltages. WARNING High voltages are present on circuit components associated with the power amplifier stage. These voltages are dangerous and

8、can be fatal. Before beginning tube replacement, ground the two high- voltage terminals (J1-A1 and J1-A2) on the main chassis to discharge the filter capacitors in this equipment. *TM 11-5820-509-35 TECHNICAL MANUALHEADQUARTERS DEPARTMENT OF THE ARMY No. 11-5820-509-35WASHINGTON, DC, 29 November 197

9、4 Direct Support, General Support and Depot Maintenance Manual (Including Repair Parts and Special Tools List) RADIO SET AN/PRC-47 ParagraphPage CHAPTER 1.INTRODUCTION Scope.1-11-1 Indexes of publications .1-21-1 Reporting of errors .1-31-1 Reporting equipment improvement recommendations (EIR).1-3.1

10、 Administrative storage.1-3.2 Destruction of Army electronics materiel.1-3.3 Historical revisions to equipment .1-4 2.FUNCTION OF EQUIPMENT Section I.System Function System applications .2-12-1 Block diagram explanations.2-22-1 Overall block diagram.2-32-1 General description .2-42-3 Receive signal

11、path . .2-52-8 Transmit signal path.2-62-9 Frequency control circuits .2-72-9 Power supply circuits .2-82-12 Section II.Theory of Receiver-Transmitter Operation Audio Frequency Amplifier AM-3506/PRC-47 (A8A1).2-92-14 Amplifier-Modulator AM-3507/PRC-47 (A8A2).2-102-18 Signal Data Translator CV-1377A/

12、PRC-47 (A8A3) .2-112-21 Power Supply PP-3518/PRC-47 (A8A5).2-122-27 Radio Frequency Oscillator 0-1032/PRC-47 (A8A6).2-132-28 Oscillator Control. C-4311/PRC-47 (A8A7) .2-142-29 Electrical Equipment Chassis. CH-474/PRC-47 (A8A4).2-152-31 CHAPTER 3.DIRECT SUPPORT MAINTENANCE . Section I.General Trouble

13、shooting Techniques Scope.3-13-1 Tools, test equipment, and materials required .3-23-2 Section II.Direct Support Troubleshooting. Overall troubleshooting.3-33-3 Troubleshooting Radio Receiver-Transmitter RT-671/PRC-47 (A8) .3-43-3 Localizing Tests.3-53-75 Section III.Isolating Trouble Trouble isolat

14、ion within a module.3-63-87 Dc resistance of coils and transformer windings.3-73-88 Section IV.Repair General parts replacement techniques.3-83-95 General removal and replacement procedures .3-93-96 Section V.Assembly and Disassembly General .3-103-97 Removal and replacement of receiver-transmitter

15、case .3-113-97 *This manual supersedes TM 11-5820-509-35, 20 November 1963, Including all changes. Change 2i TM 11-5820-509-35 ParagraphPage CHAPTER 3.Direct Support Maintenance -Cont Removal and replacement of plug-in modules .3-123-97 Module assembly and disassembly procedures .3-133-98 Power ampl

16、ifier (A8A4A1) tube removal and replacement.3-143-103 Power amplifier load-tune mechanism .3-153-104 Frequency selection mechanism.3-163-107 Power amplifier (A8A4A1) plate capacitor switch assembly.3-173-111 Power amplifier (A8A4A1 XMTR PWR switch . .3-183-112 Main chassis and front panel removal an

17、d reassembly .3-193-114 Section VI.Alignment and Adjustments Test equipment and special tools required for alignment and adjustments.3-203-116 Mechanical alignment of CV-1377A/PRC-47 slug rack coupler.3-213-124 Receiver audio output adjustments . .3-223-125 Receiver agc circuit adjustments .3-233-12

18、5 Transmitter sidetone adjustment .3-243-126 Microphone amplifier gain adjustment.3-253-127 Transmitter vox gain adjustment .3-263-127 Power amplifier grid drive alignment and bias adjustments .3-273-128 Temperature compensated oscillator frequency adjustment .3-283-129 Balanced modular adjustments

19、.3-293-130 CHAPTER 4.GENERAL SUPPORT MAINTENANCE General . .4-14-1 Test equipment required .4-24-1 Test facilities . .4-34-1 Modification work orders .4-44-1 Physical tests and inspection. .4-54-1 Receiver sensitivity tests.4-64-2 Receiver avc characteristic test.4-74-4 Receiver selectivity tests .4

20、-84-5 Receiver if rejection test .4-94-6 Receiver image rejection test .4-104-6 Receiver volume control test .4-114-7 Receiver audio output distortion test . .4-124-7 Power input requirements, receive mode .4-134-8 Transmitter power output test . .4-144-9 Transmitter output meter sensitivity test.4-

21、154-13 Transmitter frequency stability test .4-164-14 Transmitter power input test .4-174-15 Transmitter cw operation test.4-184-17 Transmitter sidetone test . .4-194-18 CHAPTER 5.DEPOT MAINTENANCE General .5-15-1 Replacement of parts.5-25-1 Equipment adjustments .5-35-1 Transmit mixer balance and t

22、ransmitter gain control adjustment.5-45-1 Transmitter hum balance adjustment.5-55-2 Transmitter modulation fidelity test .5-65-3 Transmitter spurious output adjustments .5-75-4 CHAPTER 6.DEPOT OVERHAUL STANDARDS Section I.General Scope .6-16-1 General .6-26-1 Test facilities .6-36-8 Modification work orders .6-46-8 Physical tests and inspection.6-56-8 Reference standards tests .6-66-8 Tests to be Performed .6-76-9 Reference standards.6-86-9 Section II.Performance Tests General .6-96-13 Audio Frequency Amplifier AM-3506/PRC47 (A8AI) .6-106-13 Amplifier-Modulator AM-3507/PRC-47 (