RCA-Victor-Co-Inc-T7-5 电路原理图.pdf

PAGE 27-B MODEL T 7-5 MODELS T 7-5, C 7-6 and D7-7 Seven -Tube, Three -Band, A -C, Superheterodyne Receivers andRadio -Phonograph DRIVER G9 14404 2v2DET. AMC. AMR It1001( C. OSC. (C -I5) ADJ. CENTER REAR OF CHASSIS .Radiotron and Coil Locations MODEL C 7-6 Electrical Specifications FREQUENCY RANGES Band A540. 1,625 kc. Band B1,625. 5,700 kc. Band C5,700-18,000 kc. Intermediate Frequency MODEL D 7-7 ALIGNMENT FREQUENCIES Band A.600 kc. (osc.), 1,400 kc. Band B Band C18,000 kc. RADIOTRON COMPLEMENT (1) RCA -6K7Radio -Frequency Amplifier (2) RCA -6A8.First Detector -Oscillator (3) RCA -6K7.Intermediate Amplifier (osc., det., ant.) .None required (osc., det., ant.) 460kc (4) RCA -6H6Second Detector-A.V.C. (5) RCA -6F5Audio Voltage Amplifier (6) RCA -6F6Audio Power Amplifier (7) RCA -80Full -Wave Rectifier POWER SUPPLY RATINGS- D7-7-LC7-6 -T7-5 Rating A-6.105.125 Volts, 60 Cycles,105Watts RatingA.50.60 Cycles, 100 Watts Rating A-5.105-125 Volts, 50 Cycles, 105WattsRatingB 25.60 Cycles, 101 Watts RatingB-2.105.125 Volts, 25 Cycles,110Watts RatingC. 40.60 Cycles, 105 Watts Rating C-6. 105.130/140-160/200-250 Volts, 60 Cycles,105Watts Rating C-5. 105.130/140-160/200-250 Volts, 50 Cycles,105Watts PHONOGRAPH G7- TypeManual Turntable Speed.78 R.P.M. POWER OUTPUT Undistorted Maximum. 2 25 Watts 5 0Watts Type of PickupHigh -Impedance Magnetic Pickup Impedance1,400 Ohms at 1,000 Cycles LOUDSPEAKER Type.Electrodynamic 2 25 ohms at 400 cyclesVoice Coil Impedance RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A 收音机爱 好者资料库 RadioFans.CN LE 230in CI 75-225 MMF. to MIMF O3 4000 MMF 40011WEIK7, lc Fitz s. rDET 605C. 13 400 MrIP6A8 LISLi, 6K7 :0.1s C 4P GII sisclz 2-10 PIMP Pi PV. 540000 ON SOME INSTPUMENT5 0-5 15120000 ct. 0-19 15 56000n MIR.CML-IWTERKAL COOKIEC110115 OR COIL-IWTTIONAL CONNECT1OKS 1014 Tat 133C.COIL-ITTERNAL COME:MONS TUNING WOE SOCKET AR VIEW 016 4!=,p7r 5.34 60 7.37 ZS P L24 85- 140 MIMS x101,44. 5444 IT 4T4 VELUM Fenri . -ELAM - P TRAMI-INTERMAL CONNECTIONS C22 ILIFD To FILAMENT & PILOT LAMP IZ Ss- LIS LI rOET &AMC. 6116 Cl Priv. 119 2.2 MEG R23 6E000. .00.11,F D. 845 L22 FIELD 10 MFG. R it MEG TOTAL 3.500. 00 110004 RI. 85 RA 52 AUDIO C2 6F5cLa3nro I 1 ,o0, -2A7 6Q L 4 00 OUTPUT 6 F6 055 0017 MED t74.t 52 / WIMP POSITION to L2i MUM PIELMIALIONG COIL MAX. 01005 MIN. LOWS MAO 010115 MAX LOWS MIN HIGHS MAO. LOWS -Schematic Circuit Moon.7-7 MN. 111&71414 4 1 200,(60, L30 650. 25, 4/0 NOTE:Models T7-5 and C7-6 Cathode of 6K7 I-F amp. C-401 ) .00MFO WMM. 2 5 0-24 VR269: 70s. 11300. 16 54 259: CLORSEAIFOR is connected direct to chassis. Grid of 6F5 A-F amp,is connected direct to volume control. Capacitor C42 used in Model D7-7 only. 收音机爱 好者资料库 RadioFans.CN SA.1-991 BLACK OUTPUT TRANS. 0.3st 110V. BLACK PLUG -RED ED- BLACK SYs, BROWN 845A BROWN Leo VOICE COIL NEUTR COIL L21 FIELD COIL L2 2 BROWN FLACK BROWN - CONNECTOR BLACK -Loudspeaker Wiring I5V. BLACK 150V. ORED-VELLCIW5to 210V. 0-GREEN 2 oy. (0-BLACK-RED TR BLACK-RED TR. RED -BLACK50-11 100 SI RED 110 VOLTS- 60CYCLES BLACK RECTIFIER FILAMENT 5 VOLTS BLUE BLUE Primary Resistance -10.5 ohms,Total Secondary Resistance -330 ohms, Total -Universal Transformer 100_31.-50a, 32531-25A, RED 100st -50n, 325JL-25 ru RED 110 VOLTS -50 CYCLES 110 VOLTS-25CYCLES MOTOR WIRING CONNECTIONS PAGE 129-B T7 -5,C7-6 & D7-7 -CMNOT OE MEASURED INTR ORONARY VOLTMETER. - WI:CATES A -C VOLTAGE i lI I. F TRANS. -Radiotron Socket Voltages Measured at 115 volts, 60 cycles-No signal input Alignment Procedure With tuning condenser fully meshed set point- er to coincide with 530 calibration on A Band scale. STEP CONNECT HIGH SIDE OF TEST OSC. TO - TUNE TEST OSC TO - TURN RADIO DIAL TO AIATUST THE FOLLOWING FOR MAX. OUTPUT 1 I -F Grld in series with 0.01 Imfcl 480 Kc Quiet pointnear 800 Kc A BandCi C25C23 2nclI -F Trans. 2 1st Det. Grid in series with 0.0 imfd C23C24 1st I -F Trans. 3 Antenna In series with 20() mmfd Wave Trap Minimum Output 4 Antenna in series with 300 Ohm 18000. KO 18 Mc C Band C2Ot Cit C8 Osc.R -FAnt. 5 Antenna in series with WO mmfd 1400 Kc 1400 Kc A Band C15C9C4 Osc.R -FAnt. 8 800 Kc 800 Kc A Band C18L -F Osc. Rock Gang 7Repeat Step 4 8Repeat Step 5 Osc. tracks 460 lc above signal on A Band and be- low signal on C Band. Use saxisuat capacity peak. Use animus capacity peak - ROCK GANG 收音机爱 好者资料库 RadioFans.CN STEEL WASHER INSERT NAIL TO UNSCREW TURNTAIILE SPINDLE CAP C WASHER TURNTABLE SHAFT AND BEARING OIL TURNTABLE SHAFT IFMOTOR BECOMES NOISY CORRECT CLEARANCE OF 9/33 INCH OBTAINED BY ADJUSTING THE THREE MOTOR SUPPORT SCREWS.CHECK FOR CORRECT CLEARANCE AT 3 POINTS AROUND EDGE OF TURNTABLE CORRECT POSITION OF TURNTABLE STOP WHEN ASSEMBLED.(NOT USED ON SOME MODELS) TO REMOVE TURNTABLE ASSEMBLY:- LOOSEN NUT, PUSH STOP UP OUT OF SLOT AND ROTATE teo CORRECT GAP BETWEEN FIBER TIP OF TRIP PLUNGER AND LEG OF TRIP LEVER IS FROM .00l INCH TO .006 INCH WHEN PLUNGER IS ROTATED. FRICTION PLUNGER TRIP/CiT) LEVER UGHT SPRING TO REPLACE BRAKE, LOCATE AS FOLLOWS:- WITH BRAKE LEVER ENGAGING TRIP LEVER,SWING BRAKE AND SWITCH ASSEMBLY AROUND PIVOT ARM TO BRING PLUNGER IN CONTACT WITH TRIPPER AS SHOWN, THEN SPOT 3 HOLES TO SECURE BRAKE SWITCH ASSEMBLY TO MOTOR BOARD. SWITCH PIN SHOULD BE IN POSI- TION SHOWN. MAKE SURE SWITCH LEADS CLEAR TRIP LEVER IN ITS EXTREME POSITION TRIP LEVER TRIP PLUNGER SHAFT SHOULD BE IN CENTER OF SLOT AND FREE TO ROTATE CORRECTPOSITION OF TRIP LEVER WHEN MOTOR SWITCH IS OM ADJUST TRIPPER / TO OBTAIN .012 INCH .000 INC SLOPE IN DIRECTION SHOWN PICKUP LEVER CHECK FOR CLEARANCE BETWEEN ROTOR AND MOTOR BOARD O ,/,= L.1 MOUNTINGMOUNTING PLATE SET SCREW ta- /PIVOT SHAFT - PIVOT ARM WASHER SET SCREWS PICKUP ARM SPINDLE AND BEARING LEVER SET SCREWS IN PIVOT ARM AND PICKUP LEVER BUSHINGS SHOULD BE LOCATED IN THEIR PROPER SLOT AND HOLES IN PIVOT SHAFT. MAKE SURE THESE SCREWS ARE TIGHT. CLEARANCE BETWEEN PICKUP LEVER BUSHING AND MOUNTING PLATE SHOULD NOT BE MORE THAN 1/04 INCH ADJUSTANDCLAMPLEATHER BRAKE PAD TO THISDIMENSION WHILEINSETPOSITIONWITH TURNTABLE SLIGHTLY RAISED PICKUP ARM MOTOR BOARD LUBRICATE THIS SHAFT ONLY IN FRICTION MECH- ANISM, OTHERWISE LUB- RICATEALLMOVING PARTS USE ENOUGH WASHERS SO THAT FRICTION WILL PREVENT MOVE- MENT OF TRIP FORK WHEN TRIP LEVER IS MOVED BUT NOT ENOUGH TO CAUSE PICKUP TO JUMP GROOVES WHEN PLAYING A VICTOR RECORD HAVING A 3-3 6 INCH DIAMETER ECCENTRIC GROOVE RICTION LEVER C WASHER TRIP FORK SPRING WASHERS FRICTION MECHANISM 64-53s -Motor Board Adjustments Moon. 077 PAGE 131-B C-3 -J SHIELD EXT. 0.1MFD. PHONO. VOLUME CONTROL RED C40 0.01 NAM BROWN-. I LAF C39IT) 9.MFD.ii11G K 500.11. SHIELD ,4/Or R25 EAT 47.BLUEI MODEL D7-7 T7-5, C7-6 & D7-7 BUS -GREEN Compensator Pack and Phono. Volume Control Connections HIELD a 14.) -GREEN AUDIO TUBE On receiver Models T 7-5 three different type speakersare used. They can be readily identified by the following numbers stamped on them: (1) RL 63.4, (2) 76365.1, and (3) 76365-3. STOCK No. DESCRIPTION o. ,., SN-544 WHITE rtnierOT 1 4 OUTPUTTO,VOICE TRAMS. 02 ,. NEUT. COIL 11836 5118 9634 11837 763654 CONE-Reproducer cone. CONNECTOR -3 -contact male connector for reproducer REPRODUCER-Complete TRANSFORMER-Output transformer (Field and hum coils not removable.) IA YELLOW . il1 -I 43 a)YELLOW en 4) r. ill 8-,-41FIELD BLACK BLACK- ? i , N Od SOWN - ._ PLUG CONNECTOR 11844 11842 11838 5118 9635 11839 11843 76365-3 COIL-Field coil COIL-Hum neutralizing coil CONE-Reproducer cone. CONNECTOR-I-contact male connector for reproducer REPRODUCER-Complete SPRING-Reproducer centers u p p o r t casting clamping spring-Package of 2. TRANSFORMER-Output transformer WS, (,.,9 W z OCE e NEUT. COIL IA *0 en .0 rBLACK - YELLOW FIELD .- Ac -A 1 a4S BLACK : BROWN -BLACK zs BROWN PAGE 1 3 2-B T7-5, C7-6 & D7-7 NM.11. OM. KLFLALLIAtN IrAK I b Insist on genuine factory tested parts, which are readily identified and may be purchased from authorized dealers STOC NoK. DESCRIPTION LISTS NoTOCK. DESCRIPTION LIST RECEIVER ASSEMBLIES 11282Resistor -56,000ohms -Carbon type - 1/10 watt -(R19*) -Package of 5. 5237Bushing -Variable t u n i n gcondenser mountingbushing assembly -Package 11365Resistor -82,000 ohms -Carbontype - 1/4 watt -(R23) -Package of 5 of3 3118Resistor -100,000 ohms Carbon type - 11759Cable -Two -conductor shieldedcable- 1/4 watt-(R19*)-Package of 5 complete with four -contact female con- nector . 11323Resistor -270,000 ohms -Carbon type- 1/4 watt -(R13) -Package of5 11758Cable -Three -conductor shieldedcable11172 Resistor -470,000 ohms -Carbon type- -complete with four -contact male con- 1/4 watt -(R14) -Package of 5 nector and grid contact cap -connects phonograph volume control to chassis 11397 Resistor -560,000 ohms -Carbon type - 1110 watt -(R2, R4) -Package of 5 cable 11626Resistor -2.2 megohms-Carbon type - 11350Cap -Contact cap -Package of 5 1/4 watt -(R9) -Package of 5 11465Capacitor -Adjustable capacitor -(C18). 11603 Shield -Antenna or detector coil shield 11289Capacitor -50 MMfd.-(C37). 11604Shield -Oscillator coil shield 5116Capacitor -175 MMfd.-(C31). 11383Shield -Rectifier Radiotron shield 11290Capacitor -400 MMfd.-(C2, C7, C13, C38) 11390Shield -Intermediate frequencytrans - former shield 11401Capacitor -4000 MMfd.-(C3) .11199 Socket -Dial lamp socket 4868Capacitor -.005 Mfd.-(C29, C34) 4794Socket -4 -contact rectifierRadiotron 4906Capacitor -.017 Mfd.-(C33) socket 11395Capacitor -.01 Mfd.-(C28) 11198Socket -7 -contact 6K7 -6F5 -or6H6 4858Capacitor -.01 Mfd.-(C32) .Radiotron socket 11414Capacitor -0.1 Mfd.-(C42). 11196 Socket -8 -contact 6A8 or 6F6 Radiotron 4839Capacitor -0.1 Mfd.- (C14 ) socket 4841Capacitor -0.1 Mfd.-(C21). 11586 Switch -Range switch- ( SI ) 5170Capacitor -0.25 Mfd.-(C8). 11392Switch -Tone control and power switch 11240Capacitor -10 Mfd.-(C36) assembly -(S2, S3) 11387Capacitor -10 Mfd.-(C22) 11388 Transformer -First intermediate frequency 5212Capacitor -18 Mfd.-(C35) transformer -(L16, L17, C23, C24). 5238 11600 Clip -Antenna terminal board with clip, insulating strip and rivets Coil -Antenna coil -(L2, L3,L4,L5, 11389Transformer -Second intermediatefre- quency transformer -(L18, L19, C25, C26, C27, R7, R8) C4, R1) 11384Transformer -Power transformer -105- 11601Coil -Detectorcoil -(L6, L7, L8,L9, 125volts -50.60 cycles -(T1) C9, R3) 11725Transformer -Power transformer -105- 11602Coil -Oscillator coil-( LIO,L11,L12, 125 volts -25.50 cycles L13, L14, L15, C15, C16) 11727Transformer -Power transformer -105, 6123Connector -Four -contactmaleconnector for cable, Stock No. 11758 130,140.160,195.250volts -40.60 cycles . 4153Connector -Four -contact female connector 11391 Trap-Wzve trap -(L1, CI) for cable, Stock No. 1175911237 Volume Control -(R11) 11385 11673 Condenser -Three gang variabletuning condenser -(C5, C6, C11, C12, C19, C20) Dial -Station selector dial PICKUP AND ARM ASSEMBLY 11394Foot -Chassis foot assembly -Package of 11731 Armature-Pickun armature 2 11730Cable -Pickup cable 11396Indicator -S t a t i o n selectorindicator 11732Coil -Pickup coil (L23) pointer . 4543 Damper -Pickup damper block complete 5226 11393 Lamp -Dial lamp -Package of 5 Resistor -Voltagedivider resistor-com- prising one 3,500 ohm and one 13,000 ohm sections -(R15, R20) 11728 3811 with damper plate Pickup and Arm Assembly -Complete Screw -Needle holdingscrew -Packageof. 10 11329Resistor -Voltage dividerresistor -com- prising one 85 ohm, one 148 ohm, one MOTOR ASSEMBLY 32 ohm sections -(R16, R17, R18). 11369Resistor -12 ohms -flexibletypecorn, 10194 Ball -Steel ball bearing -Package of 20. plete with contact cap -(R22)11740 Base -Motor base and bearing assembly. 11324Resistor -560ohms -Carbontype -1/4 watt -(R24) -Package of5 11745 Cap -Turntable spindle cap -Package of 5 . 3066Resistor -12,000 ohms -Carbon type -1 watt -(R5*) -Package of 5 11733Coil -Stator assembly -comprising coil and laminations -105,125 volt, 60 cycle 8072Resistor -33,000 ohms -Carbon type -I/2 operation . watt -(R5*) -Package of5 11734Coil -Stator assembly -comprising coil 11322Resistor -39,000ohms -Carbon type- I/4 watt -(R10) -Package of 5 and laminations -105.125 volt, 50 cycle operation . Stock No.11758 Cable, 11759 Cable, 11414 Capacitor 11735Coil -Stator assembly -comprisingcoil (C42), 6123 Connector and 4153 Connector used with and laminations -105.125 volt, 25 cycle Model 1:7-i7 only. operation I * Refer to Schematic Diagram. PAGE 433-B REPLACEMENT PARTS-Continued 175, C76 & D7-7 STOCK N DESCRIPTION ILISTSTOCK No. DESCRIPTION LIST 11748Damper-Motor damper assembly- coin. prising one damper, one damper plate, one screw, two rubber washers and one C washer 11232 REPRODUCER ASSEMBLIES Table Model Board-Terminal board with two lead wire clips 11741Motor -105125. volts -60 cycle motor complete (MI) . 11231 Bolt-Yoke and core assembly bolt and nut 11742Motor -105.125volts -50 cyclemotor complete 8060 Bracket-Output transformer mounting bracket 11743Motor -105.125volts -25cyclemotor complete 11257 Clamp-Cone center suspension clamp - ing nut and screw assembly-Package 11746Tripper - Automaticbraketripper - of 5 located on rotor laminations 11254Coil-Field coil-(L20) 11737Turntable-Turntable assembly-complete 11233Coil-Neutralizing coil-(L21) withrotorlaminations - 60cycle operation . 11235Cone-Reproducer cone-(L22)-Pack- age of 5 11738Turntable-Turntable assembly-complete withrotorlaminations - 50cycle operation 5119 5118 Connector -3 -contactfemaleconnector for reproducer cable Connictor-3-contact male connector for reproducerReproducr-Complete 11739Turntable-Turntable assembly-complete 9618 withrotorlaminations - 25cycle 11253Transformer-Output transformer-(T2) operation 11886Washer-Spring washer used to hold 4083Washer-Leather washer-Package of 10 field coil securely-Package of 5. 4084Washer-Metal washer-Package of 10. MISCELLANEOUS ASSEMBLIES -T7-5 & C 7-6 MOTOR BOARD ASSEMBLY11376 Escutcheon-Stationselector escutcheon and crystal 11752Brake-Automaticbrakeandswitch- complete 11582Knob-Range switch knob-Package of 5 11751 4577 2947 Bushing-Motor mounting bushing and spring assembly-comprising one bush- ing, one large washer, one cup washer, one spring, one small washer and two nuts Conn,:ctor-Two-contactmaleconnector for power supply cable Leather-Automatic brake friction leather 11610 11347 11210 11377 Knob-Station selector knob assembly- comprising one small and one large knob-Package of 5 Knob-Volume controlor tone control knob-Package of 5 ScreW-Chassis mounting screw assembly -Console Model-Package of 4 Screw-Chassis mounting screw assembly -Table Model-Package of 4 -Package of 20 11349spring-Retaining spring for knobs, Stock 11749Lever-Brake mechanism actuating lever -fastens to pivot shaft under base of No. .11347, No. 11582 and small knob in Stock No. 11610-Package of 5. pickup arm4982Spring-Retaining spring for large knob 11754Lever-Friction lever assembly-completein Stock No. 11610-Package of 10. 11753Plunger-Automatic