Militair_TV7 维修电路原理图.pdf

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H E A D Q U A R T E R S , D E P A R T M E N T O F T H E A R M Y 14 JUNE 1960 RadioFans.CN 收音机爱 好者资料库 WARNING Be careful not to contact high-voltage connections or the 115-volt ac input connections when replacing tubes in the test set. Voltages up to 300 volts ac may be encountered in this equipment. Serious injury or death may result from contact with these connections. DONT TAKE CHANCES! RadioFans.CN 收音机爱 好者资料库 Changes in force: C6 and C7 TM 11-6625-274-12 *C7 CHANGE H E A D Q U A R T E R S D E P A R T M E N T O F T H E A R M Y NO. 7 W a s h i n g t o n , D C , 9 J a n u a r y 1 9 8 4 OPERATORS AND ORGANIZATIONAL MAINTENANCE M A N U A L T E S T S E T S , E L E C T R O N T U B E T V - 7 / U ( N S N 6 6 2 5 - 0 0 - 3 7 6 - 4 9 3 9 ) , T V - 7 A / U ( N S N 6 6 2 5 - 0 0 - 3 7 6 - 4 9 3 9 ) , T V - 7 B / U ( N S N 6 6 2 5 - 0 0 - 3 7 6 - 4 9 3 9 ) , AND T V - 7 D / U ( N S N 6 6 2 5 - 0 0 - 8 2 0 - 0 0 6 4 ) TM 11-6625-274-12, 14 June 1960, is changed as follows: Page 7. Delete paragraphs 1.1, 2, and 2.1 and substitute: 1.1. Consolidated Index of Army Publications and Blank Forms Refer to the latest issue of DA Pam 310-1 to d e t e r m i n e w h e t h e r t h e r e a r e n e w e d i t i o n s , changes or additional publications pertaining to the equipment. 2. 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 TM 38-750, The Army Maintenance Management System. b. Report of Packaging and Handling Defici- encies. Fill out and forward SF 364 (Report of D i s c r e p a n c y ( R O D ) ) a n d p r e s c r i b e d i n A R 735-11-2/DLAR 4140.55/NAVMATINST 4355. 73A/AFR 400-54/MCO 4430.3F. c. Discrepancy in Shipment Report (DISREP) (SF 361). Fill out and forward Discrepancy in Shipment Report (DISREP) (SF 361) as pre- scribed in AR 55-38/NAVSUPINST 4610.33C/ A F R 7 5 - 1 8 / M C O P 4 6 1 0 . 1 9 D / D L A R 4 5 0 0 . 1 5 . 2.1. Reporting Errors and Recommending Improvements You can help improve this manual. If you find any mistakes or if you know of a way to im- prove the procedures, please let us know. Mail your letter or DA Form 2028 (Recommended C h a n g e s t o P u b l i c a t i o n s a n d B l a n k F o r m s ) direct to:C o m m a n d e r , U S A r m y C o m m u n i - cations-Electronics Command and Fort Mon- m o u t h , A T T N :D R S E L - M E - M P , F o r t M o n - Mouth, New Jersey 07703. In either case, a reply will be furnished direct to you. Paragraphs 2.2, 2.3 and 2.4 are added after paragraph 2.1. 2.2. Reporting Equipment improvement Recommendations (ElR) If your electron tube test set needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what you dont like about your equipment. Let us know why you dont like the design. Put it on an SF 368 (Quality Deficiency Report). Mail it to Com- mander, US Army Communications-Electronics C o m m a n da n d F o r t M o n m o u t h , A T T N : DRSEL-ME-MP, Fort Monmouth, New Jersey 07703. Well send you a reply. 2.3. Administrative Storage Administrative Storage of equipment issued to and used by Army activities will have preventive maintenance performed in accordance with the PMCS charts before storing. When removing the e q u i p m e n t f r o m a d m i n i s t r a t i v e s t o r a g e t h e PMCS should be performed to assure operational readiness. Disassembly and repacking of equip- ment for shipment or limited storage are covered in chapter 4 and TM 740-90-1. 2.4. Destruction of Army Electronics Materiel Destruction of Army electronics materiel to pre- vent enemy use shall be in accordance with TM 750-244-2. *This change supersedes C2, 30 Jan 1963; C4, 22 June 1966 and C5, 30 April 1974. 1 RadioFans.CN 收音机爱 好者资料库 C7, TM 11-6625-274-12 Page 8. Add paragraph 5.1 after paragraph 5.5.1. Items Comprising an Operable Equipment Usable NSNQTYNomenclature, part No., and mfr codeon code Fig. No. 6625-00-820-0064 6625-00-376-4939Test Set, Electron Tube TV-7/U, TV-7A, B/U: dynamic mutual conductance type; 0.6 to 117 V fil voltage range meter indication; tube condition on 0 to 120 arbi- trary scale; operating power requirements AC, 105 to 125 V, 50 to 1000 Hz single phase; SW positions A thru E; portable type Test Set, Electron Tube TV-7D/U: dynamic mutual conduc- tance type; 0.6 to 117 V fil voltage range; meter indication; tube condition on 0 to 120 arbitrary scale; operating power requirements AC, 105 to 125 V, 50 to 1000 Hz single Phase; SW position A thru F, portable type consisting of: NOTE The part number is followed by the applicable 5-digit Federal supply code for manufacturers (FSCM) iden- tified in SB 708-42 and used to identify manufacturer, distributor, or Government agency, etc. NOTE In usable on code column, number 1 refers to TV-7/U; number 2 refers to TV-7A/U; number 3 refers to TV- 7B/U; number 4 refers to TV-7D/U. 5935-00-732-19191Adapter, Electron Tube Socket: SM-B-425536; 80063 5935-00-537-40561Adapter, Electron Tube Socket: SM-C-179260; 80063 5 9 3 5 - 0 0 - 3 0 5 - 1 1 8 9 1Adapter, Electron Tube Socket: SM-B-425538; 80063 6625-00-684-11891Adapter, Test: SM-B-425638; 80063 6625-00-618-99281Adapter, Test: SM-B-425639; 80063 6 6 2 5 - 0 0 - 6 1 8 - 9 9 2 9 1Adapter, Test: SM-B-425640; 80063 5935-00-808-18021Adapter, Electronic Tube Socket: nuvistor tube socket adapter; 1050-127; 28569 6 6 2 5 - 0 0 - 0 6 9 - 1 9 6 0 1Adapter, Test: socket for GE Micro-Miniature 7077 and 7486; 86-060; 04435 6 6 2 5 - 0 0 - 6 6 8 - 4 6 8 3 2Lead, Test: 12450-245; 28569 6 6 2 5 - 0 0 - 7 2 7 - 7 0 6 5 2Lead, Test: SM-B-425548; 80063 1,2,3,4 1,2,3,4 1,2,3,4 1,2,3,4 1,2,3,4 1,2,3,4 1,2,3,4 1,2,3,4 1,2,3 4 1,2,3 8 8 8 4 4 4 4 4 Page 17, p a r a g r a p h 1 8 c .Delete the note.down to 10, turn the BIAS control knob Page 18, paragraph 21d note. Change the note to full scale (100 on dial). to read:Page 22, chapter 3 heading. After the heading N O T E add: If the meter pointer cannot be adjusted Section I. OPERATOR/CREW PREVENTIVE MAINTENANCE CHECKS AND SERVICES Delete paragraphs 31, 32, 33 and figures 11 andequipment other than those issued with the 12 and substitute:equipment. 31. Scope of Operators Maintenancea. Preventive maintenance checks and services The maintenance duties assigned to the operator chart (par. 33.1). of Test Sets, Electron Tube TV-7/U, TV-7A/U,b. Visual inspection (par. 34). TV-7B/U, and TV-7D/U are listed below to- C. Tube replacement (par. 37). gether with a reference to the paragraph cover- ing the specific maintenance function.T h e d. Replacement of lamps (par. 39). duties assigned do not require tools or test 2 RadioFans.CN 收音机爱 好者资料库 32. General N O T E Refer to TM 750-244-2 for proper pro- cedures for destruction of this equip- ment to prevent enemy use. a. Operator/crew preventive maintenance is the systematic care, servicing and inspection of equipment to prevent the occurrence of trouble, to reduce downtime, and to maintain equipment in serviceable condition. To be sure that your electron tube test set is always ready for your mission, you must do scheduled preventive maintenance checks and services (PMCS). (1) BEFORE OPERATION, perform your B PMCS to be sure that your equipment is ready to go. (2) When an item of equipment is reinstalled a f t e r r e m o v a l , f o r a n y r e a s o n , p e r f o r m t h e necessary B PMCS to be sure the item meets the readiness reporting criteria. (3) Use the ITEM NO. column in the PMCS table to get the number to be used in the TM ITEM NO. column on DA Form 2404 (Equip- ment Inspection and Maintenance Worksheet) when you fill out the form. b. Routine checks like CLEANING, DUST- I N G , W A S H I N G , C H E C K I N G F O R F R A Y E D C A B L E S , S T O W I N G I T E M S N O T I N U S E , C O V E R I N GU N U S E DR E C E P T A C L E S , C H E C K I N G F O R L O O S E N U T S A N D B O L T S A N D C H E C K I N G F O R C O M P L E T E N E S S a r e not listed as PMCS checks. They are things that you should do any time you see they must be done. If you find a routine check like one of operators reported problems with this item. N O T E W h e n y o u a r e d o i n g a n y P M C S o r routine checks, keep in mind the warn- ings and cautions. W A R N I N G S Adequate ventilation should be provided w h i l e u s i n g T R I C H L O R O T R I F L U O R O - ETHANE. 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.S i n c e T R I C H L O R O T R I - FLUOROETHANE dissolves natural oils, prolonged contact with skin should be C7, TM 11-6625-274-12 avoided.When necessary, use gloves which the solvent cannot penetrate. If the solvent is taken internally, consult a physician immediately. Compressed air is dangerous and can cause serious bodily harm if protective means or methods are not observed to prevent a chip or particle (of whatever size) from being blown into the eyes or unbroken skin of the operator or other personnel. Goggles must be worn at all times while cleaning with compressed air.Compressed air shall not be used f o r c l e a n i n g p u r p o s e s e x c e p t w h e r e r e d u c e d t o l e s s t h a n 2 9 p o u n d s p e r square inch gage (psig) and then only with effective chip guarding and per- sonnel protective equipment.D o n o t use compressed air to dry parts when trichlorotrifluoroethane has been used. N O T E S T h e P R O C E D U R E S c o l u m n i n y o u r PMCS charts instruct how to perform the required checks and services. Care- fully follow these instructions and, if tools are needed or the chart so in- structs, get organizational maintenance to do the necessary work. If your equipment must be in operation all the time, check those items that can be checked and serviced without dis- turbing operation. Make the complete checks and services when the equipment can be shut down. c. Deficiencies that cannot be corrected must be reported to higher category maintenance personnel.Records and reports of preventive maintenance must be made in accordance with procedures given in TM 38-750. 33. Operator/Crew Preventive Maintenance Checks and Services P e r f o r m b e f o r e o p e r a t i o n P M C S i f y o u a r e operating the item for the first time. N O T E The checks in the interval column are to be performed in the order listed. Page 23. Add paragraph 33.1 after paragraph 33. 3 RadioFans.CN 收音机爱 好者资料库 C7, TM 11-6625-274-12 33.1. Operator/Crew Preventive Maintenance Checks and Services Chart B - B e f o r e IntervalProcedures - Check for and haveEquipment is not ItemItem to berepaired or adjusted asReady/Available No.BInspectednecessaryIf: 1 * MissionCheck for completeness and Available equipment Essentialsatisfactory condition is insufficient to Equipmentof the equipment. Report support the combat missing items. mission 2TV-7(*)/UAccomplish starting procedure Test Setas described in paragraph 17. *