AN-PRC-77_serv_TM11-5820-667-35_1968.pdf

TM11-5820-667-35 D E P A R T M E N T O F T H E A R M Y T E C H N I C A L M A N U A L MANUL R A D I O S E T A N / P R C - 7 7 HEADQUARTERS, DEPARTMENT OF THE ARMY FEBRUARY 1968 D S , G S , A N D D E P O T M A I N T E N A N C E W A R N I N G DONT TAKE CHANCES! CAUTION This equipmemt is transistorized. Before connecting test equipment within the modules, insulate test prods and clips with insulating tape or sleeving. Leave an absolute minimum of exposed metal, and be extremely careful to avoid short circuits; they may cause extensive damage. Do not make resistance measurements unless specifically directed to do so. TM 11-5820-66735 C 3 Change No. 3 HEADQUATERS DEPARTMENT OF THE ARMY Washington, DC, 1 April 1987 DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE MANUAL RADIO SET AN/PRC-77 (NSN5820-00-930-3724) TM 11-5820-66-7-35, 16 February 1968, is changed as follows: 1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page. Added or revised illustrations are indicated by a vertical bar adjacent to the identification number. Remove Pages Insert Pages C/(D blank), , . . , , . . . . . . . . . i and ii . . . . . , . , . . . C and D 2-31/(2-32 blank) . . . . . . . . . . . . . . , . . . . . ., . . . . 2-31/(2-32 blank) 3-1 and 3-2 . . . . . . . . . . . , . . . . . . . . . . . . . . , , . . . . . 3-1 and 3-2 3-13 through 3-22 . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 through 3-22 3-25 and 3-26. . . . . . . . . . . . . ., . . . . ., , . . . . . . . . . 3-25 and 3-26 3-29 and 3-30. . . . . . , . . . . . . . . . . . . , . . . . . . . . . . 3-29 and 3-30 3-33 through 3-34.1 /(3-34.2 blank). . .3-33 through 3-34.1/(3-34.2blank) 3-35 and 3-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35 and 3-36 3-39 and 3-40 . . . . . . . . . . . . . . . . . . , . . , . . . . .3-38.1 through 3-56 4-1 and 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 and 4-2 4-7 through 4-14 . . . . . . . . . . . . . . . , . . . . . , . . . . .4-7 though 4-14 4-17 and 4-18 . . . . . . . . . . . . . . . , . . . . . . . . . . . ., 4-17/(4-18 blank) 4-19 and 4-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . None 4-23 and 4-24. . . . . . . . . . . . . . . . . . . , . . . . . . . . . , . 4-23 and 4-24 4-27 and 4-28. . . . . . . . . . . . . . . , . . . . . . , . . . . . . .4-271(4-28 blank) 4-29 and 4-30. . . . . . . . . , . . . . . . . . . . . . . . . . , . . . . . . . . . None 4-31 through 4-34 . . ., . . . . . . . . . . . . . . . . , , . . .4-31 though 4-34 4-35 and 4-36. . . . . . . . . . . . . . . . , . , . . . . . . . . . . . . . . . . . None 4-37 and 4-38. . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . 4-37 and 4-38 4-41 and 4-42. . . . . ., . . . . . . . . . . . . . . . . . . . , . . . . 4-41 and 4-42 4-45 and 4-46. . . . . . . . . . . . . . . . . . . . . . . . , . . . . 4-45/(4-46 blank) 4-47 and 4-48. . . . . . . . . . . . . . . . . . . , . . . . . , , . . . . . . . . . None 4-49 and 4-50. . . . . . . , . , , . . , . . . ., . . . . . . . . . . . 4-49 and 4-50 4-57 and 4-58. . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . 4-57 and 4-58 5-1 and 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ., . .5-1 and 5-2 5-5 through 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 through 5-8 7-3 and 7-4 . . . . . . . . . . . . . , . . . . . . . . . . , . . . . . . , , .7-3 and 7-4 7-17 through 7-20 . . . . . . . . . . . . . . . . . . . . . . . . .7-17 through 7-20 7-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . .7-51 7-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . 7-53 A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . A-1 and A-2 I-lthrough I-14 ., . . . . . . . . . . . . , . . . . . . . . . , . . I-1Through I.16 2. File this change sheet in front of the publication for reference purposes. This publication Is required for offlclal use or for admlnlatrative or operational purpOSeS Iimitad to US Govornment Agenices. Other requests for this documant must be referred to Commander, US Army Communlcation-Eletronics Command and Fort Monmouth, ATTN: AMSEL.ME.P, Fort Monrmouth, NJ 07703.5000. i through iii/(iv blank) only. distribution is By Order of the Secretary of the Army: Official: JOHN A. WICKHAM, JR. General, United States Army Chief of Staff R.L. DILWORTH Brigadier General, United States Army The Adjutant General DISTIRIBUTION: To be distributed in accordance with DA Form 12-51 literature requirements for AN/PRC-77. TM 11-5820-667-35 C2 Change No. 2 HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, DC, 15 January 1986 Direct Support, Generol Support, and Depot Maintenance Manual RADIO SET AN/PRC-77 (NSN 5820-00-930-3724) TM 11-5820-667-35,16 February 1968, is changed as follows: 1. Title of manual is changed as shown above. 2. New or revised material is indicated by a vertical bar in the margin. Where a chapter, section or illustration is added or revised, a vertical bar is placed opposite the figure number and title. 3, Remove old pages and insert new pages as follows: Remoue pages Insert pages A through C/(Dblank) ii and ii 1-11-1/( 1-2 blank) 2-1 through 2-222-1 through 2-22 2-22.3 through 2-322-22.3 through2-31/(2-32 blank) 3-3through3-103-3 through 3-10 3-13 and 3-143-13 and 3-14 3-17 through 3-323-17 through 3-32 3-34.1 through 3-383-34.1 through 3-38 3-39 and 3-403-39 and 3-40 4-1 through 4-44-1 through 4-4 4-7 and 4-84-7 and 4-8 5-1 through 5-45-1 through 5-4 5-7 through 5-165-7 through5-16 7-15 and 7-167-15 and 7-16 7-21 and 7-227-21/(7-22 blank) 7-27 through 7-397-27 through 7-39 7-43 through 7-537-43 through 7-53 7-57 and 7-58 A-1A-1 I-1 through 1-16I-1 through 1-14 4. File this change sheet in front of the publication. By Order of the Secretary of the Army: Official: MILDRED E. HEDBERG Brigadier Geneml, United States Army The Adjutant General JOHN A. WICKHAM JR. General, United States Army Chief of Staff DISTRIBUTION: To be distributed in accordance with DA Form 12-51 literature requirements for AN/PRC-77. CHANGE No. 1 TM 11-5820-667-35 C1 HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON, D. C., 15 MARCH 1974 Direct Support, General Support and Depot Maintenance Manual RADIO SET AN/ PRC-77 TM 11-5820-667-35, 16 February 1968, is changed as follows: 1. New or changed material is indicated by a vertical bar in the margin of the page. Changed paragraphs are indicated by a bar in the margin at the beginning of the paragraph. 2. Remove old pages and insert new pages as indicated below.-. 3. File this change sheet in the front of the manual for reference purposes. Remove pages 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 2-5 throught 2-32 . . . . . . . . . . . . . . . . . . . . . 2-5 through 2-32 3-1through 3-10 . . . . . . . . . . . . . . . . . . . 3-1 through 3-10 3-13 through 3-18 . . . . . . . . . . . . . . . . . . . . . . .3-13 through 3-39 3 - 2 5 , 3 - 2 6 . . . . . . . . . . . . . . . 3 - 1 5 , 3 - 2 6 3-33 through 3-38 . . . . . . . . . . . . . . . . .3-33 through 3-39 7-1 through 7-6. . . . . . . . . . . . . . . . . . . . . . 7-1through7-6 7-11 through 7-18 . . . . . . . . . . . . . . . . . . . . . . . 7-11 through 7-18 7-27 through 7-31. . . . . . . . . . .7-21through 7-31 7-39 through 7-49. . . . . . . . . . . . . . 7-39through 7-49 By Order of the Secretary of the Army: Official : VERNE L. BOWERS Major General, United States Army The Adjutant General CREIGHTON W. ABRAMS General, United States Army Chief of Staff DISTRIBUTION: To be distributed in accordance with DA Form 12-51 (qty rqr block no. 355), Direct/ General Support requirements for AN / PRC-77. *U.S. GOVERNMENT PRINTING OFFICE: 1974-713-212/223 S A F E T Y S T E P S T O F O L L O W I F S O M E O N E I S T H E V I C T I M O F E L E C T R I C A L S H O C K D O N O T T R Y T O P U L L O R G R A B T H E I N D I V I D U A L I F P O S S I B L E ,T U R N O F F T H E E L E C T R I C A L P O W E R I F Y O U C A N N O T T U R N O F F T H E E L E C T R I C A L P O W E R , P U L L , P U S H , O R L I F T T H E P E R S O N T O S A F E T Y U S I N G A W O O D E N P O L E O R A R O P E O R S O M E O T H E R I N S U L A T I N G M A T E R I A L S E N D F O R H E L P A S S O O N A S P O S S I B L E A F T E R T H E I N J U R E D P E R S O N I S F R E E O F C O N T A C T W I T H T H E S O U R C E O F E L E C T R I C A L S H O C K , M O V E T H E P E R S O N A S H O R T D I S T A N C E A W A Y A N D I M M E D I A T E L Y S T A R T A R T I F I C I A L R E S U S C I T A T I O N A WARNING HIGH VOLTAGE is used in the operation of this equipment DEATH ON CONTACT may result if personnel fail to observe safety precautions Never work on electronic equipment unless there is another person nearby who is familiar with the operation and hazards of the equipment and who is competent in ad- ministering first aid. When the technician is aided by operators, he must warn them about dangerous areas. Whenever possible, the power supply to the equipment must be shut off before begin- ning work on the equipment. Take particular care to ground every capacitor likely to hold a dangerous potential. When working inside the equipment, after the power has been turned off, always ground every part before touching it. Be careful not to contact high-voltage connections or 115 volt ac input connections when installing or operating this equipment. Whenever the nature of the operation permits, keep one hand away from the equip- ment to reduce the hazard of current flowing through the body. Warning: Do not be misled by the term “low voltage”. Potentials as low as 50 volts may cause death under adverse conditions. For Artifical Respiration, refer to FM 21-11. B TM 11-5820-667-35 WARNING DONT TAKE CHANCES! WARNINGS Adequate ventilation should be provided while using TRICHLOROTRI- FLUOROETHANE. Prolonged breathing of vapor should be avoided. The solvent should not be used near heat or open flame; the products of decom- position are toxic and irritating. Since TRICHLOROTRIFLUOROETHANE dissolves natural oils, prolonged contact with skin should be avoided. When necessary, use gloves which the solvent cannot penetrate. If the solvent is taken internally, consult a physician immediately. Lithium type batteries may be used with your equipment. These batteries are potentially dangerous if misused or tampered with before, during and after discharge. The following precautions must be strictly observed to pre- vent possible injury to personnel or damage to the equipment: DO NOT crush, puncture, disassemble, or otherwise mutilate the batteries. DO NOT heat or incinerate the batteries. DO NOT short circuit. DO NOT try to recharge. DO NOT use batteries which look bulged or have burst. Turn these batteries in to the Defense Reutilization and Marketing Office (DRMO). DO NOT bypass any internal fuse or replace the fuse with a fuse of a dif- ferent rating. If the battery uses replacement fuses, they will be packed two per every ten batteries. DO NOT use carbon dioxide extinguishers on exposed lithium metal fires. Flood the burning material with water or use graphite-type compounds or graphite-type extinguishers to extinguish burning lithium. You can tell the difference between Magnesium Battery BA-4386/U and Lithium Battery BA-5598/U by looking at their size. The Lithium Battery is half the size of (smaller than) the Magnesium Battery. Magnesium Batteries shall be turned into the Defense Reutilization and Marketing Office (DRMO) for disposal. DO NOT store in equipment during periods of disuse in excess of 30 days. TURN OFF the equipment if you feel the battery compartment becoming hot, hear battery venting (hissing sound), or smell sulfur dioxide gas (pun- gent, irritating fumes). Wait 30 to 60 minutes for the battery to cool before removing, Remove the battery from the Battery Box (CY-2562/PRC-25) when the radio is not in use. This is required to insure that dangerous gases do not accumulate. Personnel can be injured and equipment damaged if the boxes explode. PREVENT personal injury when applying or removing steel strapping by wearing heavy gloves and a face shield. DO NOT handle packing cartons by steel strapping. Change 3c CAUTION This equipment is transistorized. Before connecting teat equipment within the modules, insulate test prods and clips with insulating tape or sleeving. Leave an absolute minimum of exposed metal, and be extremely careful to avoid short circuits; they may cause extensive damage. Do not make resist- ance measurements unless specifically directed to do so. DChange 3 T M 1 1 - 5 8 2 0 - 6 6 7 - 3 5 TM 11-5820-667-35 HEADQUARTERS DEPARTMENTOFTHEARMY WASHINGTON, DC, 16 February 1968 TECHNICAL MANUAL No. 11-5820-667-35 DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCEMANUAL RADIO SET AN/PRC-77 (NSN5820-00-930-3724) REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improve this manual. If you find any mistakes or if you know of away to improve the procedures, please let us know. Mail your letter or DA Form 2028 (Recommended Changes to Publi- cations and Blank Forms) direct to: Commander, US Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-ME-MP, Fort Monmouth, New Jersey 07703-5000. In either case, a reply will be furnished direct to you. Paragraph 1-1-1-5 Page 1-1 CHAPTER Section INTRODUCTION. . . . . . . . . . . . . . . . . . . FUNCTION OF RADIO SET AN/PRC-77 1. 2. L II. III, IV. v, 3. I. II. III. IV, v. 4. I. II. III. 5,. I, II. 6, I. II. 7. I. II, A. B. 2-12-5 2-62-12 2-132-21 2-222-30 2-312-33 Block diagram analysis . . . . . . . . Receiver circuit analysis. . . . . . . . . . . . . . . . . . Transmitter circuit analysis. . . . . . . . . . . . . . Synthesizer system circuit analysis. . . . . . . . . . . . . 2-12-5 2-52-9 2-92-18 2-212-30.1 2-31Power distribution circuit analysis. . . . . . . . . . . . . . . . DIRECT SUPPORT MAINTENANCE G e n e r a l t r o u b l e s h o o t i n g t e c h n i q u e s Direct support troubleshooting. . . . . . . . . . . . . . . . Direct support repairs. . . . . . . . . . . . . . . . Direct support alignment procedures. . . . . . . . . . . . . . . Direct support testing procedures . . . . . . . . . . . . . . . . . . . . . GENERAL SUPPORT MAINTENANCE General support repairs. . . . . . . . . . . . . . . . . . General support alignment. . . . . . . . . . . . . . . . CHAPTER Section3-13-3 3-4,3-5 3-63-14 3-153-20 3-213-26 3-13-13 3-14 3-333-38.1 3-393-41 3-423-56 CHAPTER Section4-14-6 4-74-10 4-114-26 4-14-8 4-84-9 4-114-59General support testing procedures. . . . . . . . . . . . . DEPOT MAINTENANCE Depot maintenance repairs. . . . . . . . . . . . . . Module voltage and resistance measurements. . . . . . . . . . . . . . . . . SHIPMENT