AN-GRA-6_serv_TM11-5820-489-34_1987.pdf

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1、TM 11-5820-489-34 TO 31R4-2GRA6-42 TECHNICAL MANUAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL CONTROL GROUP AN/GRA-6 (NSN 5820-00-644-4554) This publication is required for official use or for administrative or operational purposes only. Distribution is limited to US Government Agencies.

2、 Other requests far this document must be referred to Commander, US Army Communicotlons.Electronics Command and Fort Monmouth, ATTN: AMSEL-ME-P, Fort Monmouth, NJ 07703-5000. DEPARTMENTS OF THE ARMY AND THE AIR FORCE 1 J A N U A R Y 1 9 8 7 TM 11-5820-489-34/T0 31R4-2GRA6-42 Adequate ventilation sho

3、uld be provided while using TRICHLORO- TRIFLUOROETHANE. Prolonged breathing of vapor should be avoided. The solvent should not be used near heat or open flame, the products of decomposition are toxic and irritating. Since TRICHLOROTRI- FLUOROETHANE dissolves natural oils, prolonged contact with the

4、skin should be avoided. When necessary, use gloves which the solvent cannot penetrate.If the solvent is taken internally, consult a physician immediately. Compressed air shall not be used for cleaning purposes except where reduced to less than 29 pounds per square inch (psi) and then only with effec

5、tive chip guarding and personnel protective equipment. Do not use compressed air to dry parts when TRICHLOROTRIFLUOROETHANE has been used. Compressed air is dangerous and can cause serious bodily harm if protective means or methods are not observed to prevent chip or particle (of whatever size) from

6、 being blown into the eyes or unbroken skin of the operator or other personnel. A TM 11-5820-489-34/TO 31R4-2GRA6-42 SAFETY STEPS TO FOLLOW IF SOMEONE IS THE VICTIM OF ELECTRICAL SHOCK DO NOT TRY TO PULL OR GRAB THE INDIVIDUAL IF POSSIBLE ,TURN OFF THE ELECTRICAL POWER IF YOU CANNOT TURN OFF THE ELE

7、CTRICAL POWER, PULL, PUSH, OR LIFT THE PERSON TO SAFETY USING A WOODEN POLE OR A ROPE OR SOME OTHER INSULATING MATERIAL SEND FOR HELP AS SOON AS POSSIBLE AFTER THE INJURED PERSON IS FREE OF CONTACT WITH THE SOURCE OF ELECTRICAL SHOCK, MOVE THE PERSON A SHORT DISTANCE AWAY AND IMMEDIATELY START ARTIF

8、ICIAL RESUSCITATION B *TM 11-5820-489-34 TO 31R4-2GRA6-42 Technical ManualDEPARTMENTS OF THE ARMY, No. 11-5820-489-34AND THE AIR FORCE Technical Order No. 31R4-2GRA6-42Washington, DC, 1 January 1987 DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL CONTROL GROUP AN/GRA-6 (NSN 5820-00-644-4554) R

9、EPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improve this manual. If you find any mistakes or if you know of a way to improve the procedures, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to Publica- tions and Blank Forms), or DA Form 2028-2 located in back of

10、 this manual direct to: Commander, US Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-ME-MP, Fort Monmouth, New Jersey 07703 -5000. For Air Force, submit AFTO Form 22 (Technical Order System Publication Improvement Report and Reply) in accordance with paragraph 6-5, Section Vl

11、, T.O. 00-5-1. Forward direct to prime ALC/MST. A reply will be furnished direct to you. CHAPTER 1 Section I Section II Section Ill CHAPTER 2 Section I Section II Section Ill CHAPTER 3 Section I Section II Section Ill APPENDIX A APPENDIX B INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . .

12、 . . . . . . . . . . . . . . . . . . . . . . . . 1-1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 TABLE OF CONTENTS PAGE Equipment Description and Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Technical Principles of Operati

13、on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 DIRECT SUPPORT MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Repair Parts, Special Tools, TMDE, and Support Equipment . . . . . . . . . . . 2-1 Maintenance Instructions. . . . . . . . . . . . .

14、. . . . . . . . . 2-48 GENERAL SUPPORT MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Repair Parts, Special Tools, TM DE, and Support Equipment. . . . . . . . . . . . . 3-1 Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15、 . . . . 3-1 Testing Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 EXPENDABLE SUPPLIES AND MATERIALS LIST . . . . . . . . . . . . . . .

16、 . . . . . . B-1 INDEX FOLDOUT (Located at end of manual) Index 1 *This manual supersedes TM 11-5038 dated April 1951. i/(ii blank) Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 TM 11-5820-489-34/T0 31R4-2GRA6-42 CHAPTER 1 INTRODUCTION Consolidated Index of Army

17、Publications and Blank Forms . . . . . . . . . . . . . . . . . . . . Destruction of Army Electronics Materiel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment Configuration . . . . . . . . . . . . . . . Location and Description of Major Components . . . . . . . . . . . . . . . . .

18、 . Maintenance Forms, Records, and Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PagePage Nomenclature Cross-Reference List . . . . 1-3 1-1Official Nomenclature, Names, and Designations . . . . . . . . . . . . . . . . . . . 1-1 1-1Reporting Equipment Improvement 1-1Recommendation

19、s (EIR) . . . . . . . . . . . . . 1-1 Safety, Care, and Handling . . . . . . . . . . . . . 1-1 1-1Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Tabulated Data . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-1Technical Principles of Operation . . . . . . 1-3 Sectio

20、n l. GENERAL INFORMATION 1-1.SCOPE This manual describes Control Group AN/GRA-6 and covers Direct and General Support maintenance. 1-2. CONSOLIDATED INDEX OF ARMY PUBLICATIONS AND BLANK FORMS Refer to the latest issue of DA Pam 310-1 to determine whether there are new editions, changes or additional

21、 publications pertaining to the equipment. 1-3. MAINTENANCE FORMS, RECORDS, AND REPORTS a. Reports of Maintenance and Unsatisfactory Equipment. Department of the Army forms and procedures used for equipment maintenance will be those prescribed by DA Pam 738-750 Maintenance Management Update. Air For

22、ce personnel will use AFR 66-1 for maintenance reporting and TO-00-35D54 for unsatisfactory equipment reporting. b. Report of Packaging and Handling Deficiencies. Fill out and forward SF 364 (Report of Discrepancy (ROD) as prescribed in AR 735-11-2/DLAR 4140.55/NAVMATlNST 4355.73B/AFR 400-54/MCO 443

23、0.3H. c. Discrepancy in Shipment Report (DISREP) (SF 361). Fill out and forward Discrepancy in Shipment Report (DISREP) (SF 361) as prescribed in AR 55-38/NAVSUPlNST 4610.33C/AFR 75-18/MCO P4610.19D/DLAR 4500.15. 1-4. DESTRUCTION OF ARMY ELECTRONICS MATERIEL Destruction of Army electronics materiel

24、to prevent enemy use shall be in accordance with TM 750-244-2. 1-5. OFFICIAL NOMENCLATURE, NAMES, AND DESIGNATIONS Refer to TM 11-5820-489-10. 1-6. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR) a.If your equipment needs improvement, let us know. Send us an EIR. You, the user, are the only on

25、e who can tell us what you dont like the design. Put it on an SF 368 (Quality Deficiency Report). Mail it to Commander, US Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-PA- MA-D, Fort Monmouth, New Jersey 07703-5000. Well send you a reply. b. Air Force personnel are encourag

26、ed to submit ElRs in accordance with AFR 900-4. Section II EQUIPMENT DESCRIPTION AND DATA 1-7. TABULATED DATA Refer to TM 11-5820-489-10. 1-8. LOCATION AND DESCRIPTION OF MAJOR COMPONENTS Refer to TM 11-5820-489-10. 1-9. EQUIPMENT CONFIGURATION Refer to TM 11-5820-489-10. 1-10. SAFETY, CARE, AND HAN

27、DLING Observe all WARNINGS, CAUTIONS and NOTES contained in this manual. 1-1 TM 11-5820-489-34/TO 31R4-2GRA6-42 1-2 TM 11-5820-489-34/T0 31R4-2GRA6-42 1-11. NOMENCLATURE CROSS-REFERENCE LIST REMOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

28、. . . . C-433/GRC LOCAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-434/GRC HS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Handset H-33(*)/

29、PT Section Ill. TECHNICAL PRINCIPLES OF OPERATION 1-12. FUNCTIONAL ANALYSIS a. Control Group AN/GRA-6 provides: G Talking and listening capabilities for one or two receiver-transmitters to a remote position. G Telephone communications and ringing between remote and local control positions. G Power c

30、ontrol of radio set from remote position. b. Control Group AN/GRA-6 consists of these basic circuit elements: G Telephone circuit G Ringing circuit G Control circuit G G G Each control unit provides a line transformer (T1) with a microphone input, receiver out- put and balanced 600-ohm line windings

31、. Both transformers (T1) joined by telephone line form the basic telephone circuit. Microphone voltage is provided by flashlight dry cells (BA-30; two in Remote Control Unit and two in Local Control Unit) connected in series with the microphone windings of the line transformer. 1-3 TM 11-5820-489-34

32、/T0 31R4-2GRA6-42 The ringing circuit consists of: G Hand cranked 90 volts/20 Hz ringing generator/signal transmitting device. G Bell and lamp/signal receiving devices. G Signal switch to select audible or visual signal. Ringing, sending and receiving devices are connected across the telephone line.

33、 Remote Control Circuit consists of: G Control Voltage Control Circuits Remote Control C-433/GRC G Selector Switch/three position which provides three functions: LEFT-HAND WRITE-IN POSITION - battery connected across line/binding post L1 positive/L2 negative. MIDDLE WRITE-IN POSITION - battery conne

34、cted across line/binding post L1 negative/L2 positive. TEL - battery disconnected from line. 1-4 TM 11-5820-489-34/TO 31R4-2GRA6-42 Local Control C-434/GRC Local Control circuit consists of: G Four position Remote Switch. G Three position Local Switch. G Three relays 01, 02, and 03. REMOTE SWITCH (S

35、ET 1, SET 2, or SET 1 and SET 2) connects relays 01, 02 and 03 across the line to respond to the particular control voltage polarity determined by the setting of the Remote Control SELECTOR switch. In the TEL ONLY position, the switch removes control of radio from remote operator and allows the loca

36、l operator control. LOCAL SWITCH - with Remote Switch (Local Control Unit) in TEL ONLY position, control of SET 1 or SET 2 is available to local operator. Relays 01, 02, 03 01- Nonpolarized, nonlocking type; controls switching of microphone and headphone leads, 02- Polarized, with magnetic latch; co

37、ntrols switching ground return connection to receiver- transmitter control relays. 03- Polarized, with magnetic latch; controls switching power supply energizing lead for the radio set. (Refer to FO-7.) 1-5/(1-6 blank) TM 11-5820-489-34/TO 31R4-2GRA6-42 CHAPTER 2 DIRECT SUPPORT MAINTENANCE PAGE Clea

38、ning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52 Continuity and Voltage Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31, 2-33 Disassembly . . . . . .

39、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48 instructions, Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Operational Checks . . . . . . . . . . . . . . . . . . . . . .

40、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22, 2-24 Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76 Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Replacement of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53 Resistance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35, 2-38, 2-43, 2-45 Short Circuit Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15, 2-17, 2-21 Special Tools, TMDE, and Support Equipment . . . . . . . . . . . . . . .

43、 . . . . . . . . . . . . . . . . . 2-1 Voltage Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27, 2-30 Section l. REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT 2-1. SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT NOMENCLAT

44、URENATIONAL STOCK NO.REMARKS Battery, BA-306135-00-120-10204 Required Battery, BA-414/U6135-00-125-52561 Required Handset, H-33/PT5965-00-163-99472 Required Multimeter, TS-352B/U6625-00-242-5023 Tool Kit, Electronic Equipment TK-105/G 5180-00-610-8177 Voltmeter, Electronic ME-30B/U6625-00-649-4537 2

45、-2. REPAIR PARTS Refer to TM 11-5820-489-34P. 2-1 TM 11-5820-489-34/T0 31R4-2GRA6-42 Section Il. TROUBLESHOOTING PROCEDURES 2-3. GENERAL INSTRUCTIONS a. Maintenance personnel should conduct a visual inspection of the equipment before start- ing detailed troubleshooting steps. Many troubles can be di

46、scovered by looking over the equip- ment and noting an obviously damaged, dirty or corroded part, or defective wiring. b. Maintenance personnel at the Direct Support level should take advantage of steps made at lower levels by: G debriefing operator who discovered fault if possible or applicable. G

47、debriefing organizational personnel who attempted repair prior to receipt of equipment at the Direct Support facility. c. The following troubleshooting chart can be used only if both components of Control Group AN/GRA-6 are available and installed properly. For installation procedures see TM 11-5820

48、-489-20. If only one component of Control Group AN/GRA-6 is available at the direct sup- . port maintenance level proceed to the localized testing procedure starting in para. 2-4 and do short circuit checks, operational checks, voltage and resistance measurements to isolate faulty components. d. Bat

49、teries must be installed If no other power source is provided. 2-2 TM 11-5820-489-34/TO 31R4-2GRA6-47 Using the Troubleshooting Chart 1 2 3 4 NOTE To remove unit from case, refer to paragraph 2-17. Going from MALFUNCTION/SYMPTOM column to PROBABLE CAUSE column will zero in on the problem area. WARNINGS, CAUTIONS and NOTES appear when applicable. Flows logicaily, taking technician from most probable to least likely cause of malfunction. Illustrated aids speed procedure and increase accuracy. 2-3 TM 11-5820-489-34/T0 31R4-2GRA6-42 MALFUNCTION/SYMPTOM PROBABLE CAUSE TEST PR