TM 11-6625-316-12 DEPARTMENT OF THE ARMY TECHNlCAL MANUAL OPERATOR AND ORGANIZATIONAL MAINTENANCE MANUAL TEST SETS ELECTRON TV-2/U, AND TUBE TV-2A/U TV-2B/U This copy is a reprint which includes current pages from Changes 2 through 3 HEADQUARTERS, DEPARTMENT OF THE ARMY MARCH 1961
WARNING DANGEROUS VOLTAGES EXIST IN THIS EQUIPMENT Be careful when working on the 290-volt plate and screen supply circuits, or on the 115-volt ac line connections.
Changes now in force: C 2 and C 3 TM 11-6625-316-12 C3 CHANGE No. 3 HEADQUARTERS DEPARTMENT OF THE ARMY WASHINGTON , D. C., 10 July 1974 Operator and Organizational Maintenance Manual TEST SETS, ELECTRON TUBE TV-2/U, TV-2A/U, TV-2B/U, AND TV-2C/U TM 11-6625-316-12, 16 March 1961, is changed as follows: Page 5, paragraph 1.1. Delete and substitute: 1.1 Indexes of Publications a. DA Pam 310-4.
Reports should be submitted on DA Form 2028 (Recommended Changes to Publications and Blank Forms) and forwarded direct to Commander, US Army Electronics Command, ATTN: AMSELMA-C, Fort Monmouth, NJ 07703. Page 7, paragraph 5. Delete and substitute: 5. Item Comprising an Operable Equipment Test Sets, Electron Tube TV-2/U, TV-2A/U, TV-2B/U, and TV-2C/U (6625-669-0263) each comprises an operable equipment, Page 11, paragraph 9c. Delete the second sentence. Page 61, appendix III.
17 ATAD (10) 29-1 USA Dep (2) 29-15 Sig Sec USA Dep (2) 29-16 Sig Dep (2) 29-21 MAAG (1) 29-26 USARMIS (1) 29-26 ATS (1) 29-36 WRAMC (1) 29-55 USAERDAA (1) 29-56 USAERDAW (1) 29-105 Sig FLDMS (1) 29-109 Units org under fol TOE: 1 ea. 29-134 7 29-186 7-100 32-56 11-16 37 11-36 39-51 11-97 55-157 11-98 11-117 57 11-302 57-100 11-500 (AA-AC) ARNG: State AG (3). USAR: N o n e For explanation of abbreviations used, see AR 310-50.
* TM 11-6625-316-12 T ECHNICAL M A N U A L No. 11-6625-316-12 T ECHNICAL O R D E R DEPARTMENTS OF THE ARMY AND THE AIR FORCE W ASHINGTON 25, D. C., 16 March 1 9 6 1 TEST SETS, ELECTRON TUBE TV-2/U, TV-2A/U, AND TV-2 B/U Paragraph C HAPTER 1 . Section I. II. C HAPTER 2 . Section I. II. III. IV.
18 19 20 21 22 23 24 25 23 24 25 25 26 27 28 29 26 27 28 29 30 31 30 31 32 32 33 37 PERATOR’S MAINTENANCE General _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Preventive maintenance_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Visual inspection _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Operational checklist _ _ _ _ _ _ _ _ _ _ _ _ _ Removal and replacement of chassis _ _ _ _ _ _ _ _ _ _ _ _ Tube replacement _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Preferred-type tubes _ _ _ _ _
Figure 1.
CHAPTER 1 INTRODUCTION Section I. GENERAL 1. Scope a. This manual describes Test Sets, Electron Tube TV-2/U, TV–2A/U, and TV–2B/U (fig. 1) and covers operation and the operator’s and organizational maintenance. It includes instructions for operation under usual conditions, for cleaning and inspection of the equipment, and for replacement of parts available to first and second echelon maintenance. b.
Materiel Support Agency, ATTN: SIGMS-PA2d, Fort Monmouth, N.J. Section II. DESCRIPTION AND DATA 3. Purpose and Use Test Set, Electron Tube TV–2(*)/U (fig. 1) is a portable tube tester of the dynamic mutual conductance type. It is used to test and to measure performance capabilities and to determine rejection limit for electron tubes used in receivers, low-powered transmitters, and other electronic equipment. The following tests can be made with the tube tester. a. S h o r t t e s t . b.
PLATE meter: Type _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ DC voltmeter. Sensitivity ----------------- 1,000 ohms per volt. Voltage ranges. ---------------0 to 250 volts dc, with redlines at 45, 90, 180, and 225. 0 to 50 volts ac, with 20 AC and 35 AC marked in red. Ohmmeter ranges ------------0.1 to 1.0 megohms. Accuracy-------------- ±2 percent error at full scale. SCREEN VOLTS meter: Type ---------- -------------Dc voltmeter. Sensitivity -----------------1,000 ohms per volt.
b. Running Spares. Item Quantity 1 1 5 1 Ref symbol Electron tube, 83-----------------------------V1 E l e c t r o n t u b e , 6X4W----------------------------V2, V3 F1, F2 F u s e s , 3 ampere, 250 volts, ¼ x 1¼ inches. Glow lamp, NE-51 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 11C, 12C Note. Running spares listed above are stored in designated positions on the inside cover and chassis (figs. 1 and 8 ) of the tube tester. 6. Description of Test Set, Electron Tube TV-2(*)/U (fig. 1) a.
9
CHAPTER 2 OPERATION Section I. SERVICE UPON RECEIPT OF EQUIPMENT 8. Unpacking a. Packaging Data. When packed for shipment, the tube tester is cushioned on all surfaces and placed within a water-resistant fiberboard box. The fireboard box is sealed with water-resistant tape and placed within a wooden shipping box. Spare tubes, lamps, and fuses are placed in their designated positions within the tube tester (figs.
Figure 2. modified, the MWO number will appear on the front panel near the nomenclature plate. c. Check the equipment against the packing list. When no packing list accompanies the equipment, use the table of components (par. 5a) and/or the basic issue items list (app. III) as a general check.
Section II. OPERATORS CONTROLS AND INDICATORS 10. Damage From Improper Settings Improper setting of the FILAMENT RANGE switch (fig. 3) or incorrect operation of the PRESS TO TEST switches may damage the tube under test. Be sure that all the controls and switches are set properly before inserting the tube in the socket. 11. Operating Controls and indicators (fig. 3) a. Controls. Control Function ON-OFF switch . . . . . . . . . .......... In ON position, applies ac power to unit.
Control PLATE (12-position rotary switch). SCREEN (12-position rotary switch). CATHODE (12-position rotary switch). SUPPRESSOR (12-position rotary switch). FILAMENT RANGE (20-position rotary switch). FILAMENT fine control -----------BIAS RANGE (8-position rotary switch). BIAS fine control -----------------PLATE-SCREEN RANGE (12position rotary switch).
Function Control Switch position Action performance of transconductance (GM) test. SIGNAL-VR control--------------------- Permits accurate adjustment of ac signal level (indicated on the SIGNAL meter). In test of voltage-regulator tubes, permits adjustment of maximum and minimum currents through the tube (indicated on the PLATE meter).
Figure 3.
12. Tube Test Data Tube test data in roll chart form is mounted in a case inside the cover of Test Set, Electron Tube TV-2(*)/U (fig. 1). The tube test data roll chart has left- and right-hand sections. The tube types appear in ascending numerical and alphabetical order from top to bottom in the left-hand section and from bottom to top in the right-hand section. Designations on the tube test data roll chart housing (fig.
Column METER SETTING -------------- SHUNT ----------------------PRESS TO TEST ------------------------- M I N L I M ( l e f t section ) MINIMUM LIMITS (right section). N O T E S - - - - - - - - - - - Description Indicates setting of meters, by adjusting associated fine controls, which correspond to the following subcolumns: PLATE BIAS SCREEN SIG-VR (set to redline (RL) or full scale (FS)) Indicates setting of SHUNT control.
1 8 Figure 4.
Section III. PRELIMINARY OPERATING PROCEDURES 13. Operating Precautions (fig. 3) a. Do not insert a tube into a test socket until the SELECTORS switches and the FILAMENT RANGE switch are properly adjusted (par. 16). b. R e t u r n a l l c o n t r o l s t o t h e i r s a f e t y p o s i t i o n s ( p a r . 1 5 d ) w h e n the tube tester is turned off. c. Do not prolong the testing of tubes with filaments that draw more than 3 amperes. d.
Figure 5. sponding sockets and receive the wear rather than the permanent socket. When worn so that satisfactory contact can no longer be made, the test adapters can be replaced without disconnecting the leads from their respective test socket. 15. Preliminary Starting Procedure a. C h e c k t h e v o l t a g e a n d f r e q u e n c y o f t h e a l t e r n a t i n g c u r r e n t (ac) power source to be used for the operation of Test Set, Electron Tube TV-2(*)/U. The voltage must be between 103.5 and 126.
receptacle on the panel (fig. 1) and unwind the power cord from the brackets. d. Check to see that all controls and switches are in their power cord safety positions as follows: Switch or control ON-OFF ---------------------------------------SHORT TEST ---------------------------------FUNCTION ------------------------------PRESS TO TEST P1, P2, P3, P4, P5, and P6.
Section IV. OPERATION UNDER USUAL CONDITIONS 16. Starting Procedure Note. To start the equipment, first make sure the controls are set as required by the preliminary starting procedure (par. 15) and then perform procedures described in a through i below. a. Locate the type number of the tube to be tested on the tube test data roll chart mounted inside the cover of the tube tester. b.
RANGE switch to the next higher position, and then adjust the control until the correct voltage is indicated on the meter. i. I f t h e l i n e v o l t a g e i s h i g h a n d i t i s n o t p o s s i b l e the FILAMENT fine control to indicate the specified turn the FILAMENT RANGE switch to the next lower and then adjust the control until the correct voltage is on the meter. to adjust voltage, position, indicated 17.
3A6GT 3B7 3D6 3LF4 3Q4 3Q5QT 3S4 3V4 d. I f t h e l a m p b u r n s c o n t i n u o u s l y o r g l o w s d u r i n g t a p p i n g i n any one of the five positions of the SHORT TEST switch, the tube contains short-circuited electrodes. Discard the tube unless an exception is noted on the tube test data roll chart. e. D i s r e g a r d a m o m e n t a r y f l a s h o f t h e F I L . C O N T . S H O R T indicator lamp while the SHORT TEST switch is being moved from one position to the next.
(1) An open circuit or infinite leakage between elements will produce no deflection of the PLATE meter pointer. (2) A short circuit between two elements will produce a fullscale deflection of the PLATE meter pointer. Note. Where the NOTES column indicates a short circuit, fullscale deflection will appear at those settings. (3) Read intermediate leakage values on the resistance scale of the PLATE meter. The amount of leakage is indicated in megohms. e.
d. A d j u s t t h e P L A T E a n d S C R E E N f i n e c o n t r o l s u n t i l t h e PLATE and SCREEN VOLTS meters indicate the exact voltages specified on the tube test data roll chart. Red calibration marks on both meters facilitate this adjustment. e. S e t t h e B I A S R A N G E s w i t c h t o t h e v o l t a g e o r p o s i t i o n specified on the tube test data roll chart. f.
tube contains excessive gas. When testing a multisection tube, make the gas test on an amplifier section; it does not apply to diode sections or to rectifiers. a. Perform the operations in paragraphs 15 and 16. b. Operate the FUNCTION switch to the TEST position. c. O p e r a t e t h e P L A T E - S C R E E N R A N G E s w i t c h t o t h e p o s i tion specified on the tube test data roll chart. W a r n i n g : Do not touch the top cap of a tube under test after plate voltage has been applied. d.
a. Perform the operations described in paragraphs 15 and 16. b. Operate the FUNCTION switch to the TEST position. c. Set the PLATE-SCREEN RANGE switch to the position specified on the tube test data roll chart. d. Adjust the PLATE fine control until the PLATE meter indicates the exact voltage specified on the tube test data roll chart. Red calibration marks on the meter scales facilitate this adjustment. e. Operate the quality SHUNT control to the number specified on the tube test data roll chart. f.
c. S e t t h e q u a l i t y S H U N T c o n t r o l t o t h e n u m b e r s p e c i f i e d o n the tube test data roll chart. d. Set the FUNCTION switch to the VR position. e. T u r n t h e S I G N A L - V . R . a n d t h e B I A S f i n e c o n t r o l s t o t h e i r extreme counterclockwise (zero) positions. f. D e p r e s s a n d h o l d d o w n t h e P R E S S T O T E S T P 5 s w i t c h .
ated for the PLATE SELECTORS switch on the tube test data roll chart. e. S e t t h e G M - S I G N A L R A N G E s w i t c h t o t h e F p o s i t i o n . f. A d j u s t t h e S C R E E N f i n e c o n t r o l u n t i l t h e v o l t a g e s p e c i f i e d on the tube test data roll chart for the PLATE meter is indicated on the SCREEN VOLTS meter. Note.
g. A d j u s t t h e S C R E E N f i n e c o n t r o l u n t i l t h e S C R E E N V O L T S meter indicates the voltage specified on the tube test data roll chart (par. 12). h. S e t t h e B I A S f i n e c o n t r o l t o i t s e x t r e m e c l o c k w i s e ( m a x i mum) position. i. W i t h t h e P R E S S T O T E S T P 5 s w i t c h h e l d i n i t s o p e r a t e d position, gradually reduce the bias voltage by adjusting the BIAS fine control until the tube strikes its firing potential.
f. R e l e a s e t h e P R E S S T O T E S T P 4 s w i t c h . g. For twin-indicator tubes, operate the SCREEN and SUPPRESSOR SELECTORS switches to the positions specified in the second line of the tube test data roll chart. h. A g a i n d e p r e s s t h e P R E S S T O T E S T P 4 s w i t c h . I f t h e t u b e is good, the indicator now should be open, or, in the case of twinindicator tubes, indicator No. 1 should be open and indicator No. 2 should be closed. i.
f. I n s e r t a n d h o l d t h e l a m p i n t h e c e n t e r o f t h e S E V E N s o c k e t . If the lamp is good, it will light with normal brilliancy. Caution: Do not test glow lamps with the TV-2(*)/U unless these lamps are supplied with a current-limiting series resistor. g. When switch to the the test is completed, OFF position and operate the ON-OFF power return the FIL- and FIL+ SELECTORS switches, the FILAMENT RANGE switch, and the FILAMENT fine control to their safety positions (par. 15d).
(7) Adjust the FILAMENT fine control until the FILAMENT VOLTS meter needle indicates 6.3 volts. b. Short Test. T o p e r f o r m t h e s h o r t t e s t ( p a r . 1 8 ) o n t h e 6SQ7 tube, proceed as follows: (1) For the TV–2/U, aline the dot on the PLATE fine control with the dot on the panel. For the TV-2A/U and TV2B/U, aline the PLATE fine control pointer-type knob with the line index marking on the panel. (2) Turn the SHORT TEST switch slowly from the OPER.
e. Measurement of Transconductance. To test the transconductance of the triode section of the 6SQ7 tube, proceed as outlined below. The FUNCTION switch and all SELECTORS switches are set as in a (2) through (7) above. (1) Set the PLATE-SCREEN RANGE switch to the J position. (2) Adjust the PLATE fine control until the PLATE meter indicates 225 volts. (3) Set the BIAS RANGE switch to the 5 position. (4) Adjust the BIAS fine control until the GRID BIAS VOLTS meter indicates 2 volts.
RANGE switch are set as in a(2) through (4) FILAMENT VOLTS meter indicates 6.3 volts, above, and the (1) Set the PLATE switch to the 5 position. (2) Set the PLATE-SCREEN RANGE switch to the S position. (3) Adjust the PLATE fine control until the PLATE meter indicates 20 volts ac. (4) Turn the quality SHUNT control to 90. (5) Set the GM-SIGNAL RANGE switch to the A position. (6) For the TV-2/U, aline the dot on the knob of the GM CENTERING control with the dot on the panel.
31. Stopping Procedure a. Set the ON-OFF switch to the OFF position. b. Remove the tube from the test socket. c. Return all controls to their safety positions (par. 15d). d. Remove the power cord from the power source, wind the power cord around the brackets on the panel, and insert the plug into the dummy power cord receptacle (fig. 1). Close the cover of the case, and latch the luggage-type fasteners.
CHAPTER OPERATOR’S 3 MAINTENANCE 32. General The following is a list of maintenance duties normally performed by the operator of Test Set, Electron Tube TV–2(*)/U. These procedures do not require special tools or test equipment. a. P r e v e n t i v e m a i n t e n a n c e ( p a r . 3 3 ) . b. V i s u a l i n s p e c t i o n ( p a r . 3 4 ) . c. O p e r a t i o n a l c h e c k ( p a r . 3 5 b ) . d. Replacement of defective lamps (par. 39b). e. Replacement of defective fuses (par. 39a). f.
Figure 6.
40 Figure 7.
34. Visual Inspection a. When the equipment fails to perform properly, turn off the power and check for the conditions listed below. Do not check any item with the power on. ( 1 ) Worn, broken, or disconnected power cord or connector. ( 2 ) Improperly connected electrical clips. ( 3 ) Burned-out or improperly seated fuses. ( 4 ) Defective or loose switch knobs. Operate the switches to be sure there is a definite stop at each position indicated on the panel. ( 5 ) Loose control knobs.
4 2 par. 39a par. 39b b. par. 39b pars. 36 pars.
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36. Removal and Replacement of Chassis a. Removal. (1) Unsnap the latches and open the cover of the tube tester. (2) Remove the 14 screws that secure the front panel to the case. (3) Lift the panel and the chassis from the case by the handles mounted on the panel. (4) Slowly lift the tube tester case upward until it is clear of the chassis. b. Replacement. ( 1 ) Position the tube tester case so that the handle is forward. ( 2 ) Carefully lower the tube tester into the case.
37. Tube Replacement (fig. 8) When trouble occurs, check the power cord connection and the control settings before removing any tubes. If tube failure is suspected, use the tube s u b s t i t u t i o n m e t h o d (a b e l o w ) t o c h e c k the tubes. Caution: Do not rock or rotate a tube when removing it from a socket; pull it straight out with a tube puller. a. Tube. Substitution Method. Replace a suspected tube ( b below) with a new tube.
39. Replacement of Fuses and Lamps The two fuses (F1 and F2) and the two glowlamps (11C and 12C) are removable from the front panel of the tube tester. a. volt, fuse, move Replacement of Fuses. Fuses F1 and F2 are 3-ampere, 250¼- by 1¼-inch, cartridge-type fuses (fig. 5). To remove a press the fuseholder cap and turn it counterclockwise. Rethe cap, and then remove the fuse from its holder. C a u t i o n : The fuses are rated at 3 amperes each.
CHAPTER ORGANIZATIONAL 4 MAINTENANCE 40. General Organizational maintenance of the tube tester is limited to preventive maintenance (par. 42) and to the replacement of the test adapters (fig. 10), electrical plug connector, electrical clip, insulator clip, knobs (04 through 031, fig. 1), indicator light lens, and electron tube retainer and shield. The operating instructions for the tube tester are contained in paragraphs 13 through 31. 41.
Item 12 19 Maintenance procedures See that the electron tube shields for V2 and V3 are firmly in position and secure. See that the electron tube retainer for V1 is clamped tight. Inspect fixed capacitors on the underside of the tube tester chassis for leaks, bulges, and discoloration. 43. Visual Inspection Before operating the equipment, inspect it. Inspection will save repair time and may also avoid further damage. Inspect the following for obvious defects: a.
Figure 9.
50 par. 39a par. 39b c. par. 39b par.
pars. 36 par. 45 pars. 36 par. 45 par. 45 par.
5 2 par. 45 par.
Figure 10.
45. Replacement of Test Adapters (fig. 10) Replace test adapter X13B (used in TV-2/U, TV-2A/U, and TV-2B/U) and test adapters X3B, X7B, and X10B (used in TV2B/U only) as follows: a. Removal. (1) Remove the tube tester chassis (par. 36) from the case. (2) Remove the hexagonal nut from the threaded stud of the test adapter to be replaced. Remove the spacing sleeve when replacing test adapter X3B. (3) Remove the test adapter from the test socket. b. Replacement.
CHAPTER SHIPMENT, LIMITED TO 5 STORAGE, PREVENT AND ENEMY DEMOLITION USE Section I. SHIPMENT A N D L I M I T E D S T O R A G E 46. Disassembly of Equipment a. O p e r a t e a l l s w i t c h e s a n d t h e i r c o n t r o l s t o t h e i r s a f e t y p o s i tions (par. 15d) and disconnect the tube tester from the ac power supply. b. Remove the power cord plug from the ac source. c.
b. Packaging. (1) Package each technical manual within a close-fitting bag fabricated of waterproof paper. Seal each bag with waterproof pressure-sensitive tape. (2) Running spares are stored in designated positions on the inside cover and chassis (figs. 1 and 8) of the tube tester. (3) Package the tube tester in a double wrap of flexible corrugated fiberboard. Secure the ends of the package with waterproof pressure-sensitive tape. Figure 11. Field repackaging diagram.
c. Packing. ( 1 ) Line the wooden shipping box with waterproof wrapping paper. ( 2 ) Place the wrapped tube tester in the wooden shipping box. (3) Seal the waterproof wrapping paper liner with waterproof pressure-sensitive tape. ( 4 ) Place the wrapped technical manuals on top of the sealed waterproof wrapping paper liner and secure them with waterproof pressure-sensitive tape. ( 5 ) Nail the wooden cover in place. ( 6 ) For intertheater shipment, secure the wooden shipping box with metal strapping.
APPENDIX I REFERENCES Following is a list of references applicable and available to the operator and unit repairman of Test Set, Electron Tube TV-2(*)/U: FM 21-5 FM 21-6 FM 21-30 SB 38-100 AR 320-5 AR 320-50 TM 11-6625316-12P 58 Military Training. Techniques of Military Instruction. Military Symbols. Preservation, Packaging, and Packing Materials, Supplies, and Equipment Used by the Army. Dictionary of United States Army Terms. Authorized Abbreviations and Brevity Codes.
APPENDIX II MAINTENANCE ALLOCATION 1. Scope a. This appendix assigns maintenance functions and repair operations to be performed by the lowest appropriate maintenance echelon. It also specifies the tools and other equipment authorized at each echelon to perform the assigned maintenance functions. b. Columns in the maintenance allocation chart are as follows: (1) Part or component. This column shows only the nomenclature or standard item name.
through the maintenance technique of complete disassembly of the item, inspection of all parts or components, repair or replacement of worn or unserviceable elements using original manufacturing toler- ances and/or specifications and subsequent reassembly of the item. ( 3 ) 1st, 2d, 3rd, 4th, 5th echelon. The symbol X indicates the echelon responsible for performing that particular maintenance operation, but does not necessarily indicate that repair parts will be stocked at that level.
APPENDIX III BASIC ISSUE ITEMS LIST Section I. INTRODUCTION 1. Scope a. General. This appendix lists items supplied for initial operation and for running spares. The list includes parts and material issued as p a r t of the major end item, and all items authorized for basic operator maintenance of the equipment. End items of the equipment are issued on the basis of allowances prescribed in equipment authorization tables and other documents that are a basis for requisitioning. b. Columns.
No.” column refer to the illustrations where the part is shown. 2. Critical Items A zero slash (ø) in the “Description” column indicates items that are expected to fail during the first year; also items that will make the equipment inoperative if they fail.
1
2
PIN :017099-000
