RCA-Victor-Co-Inc-TRK-90 电路原理图.pdf

PAGE 251-C MODELS TRK-9, TRK-12, TRK-90 and TRK-120 AC, Superheterodyne, High -Picture -Definition, Five -Television -Channel, Receiver and Three -Band, Electric Tuning, AC, Superheterodyne Broadcast Receiver Models TRK-12, TRK-120 TRK-9 , TRK-90 Height 471/2 in.; Depth 243718 in. Width 311i2 in.:. Weight. 200 lb. Shipping Weight 283 lb. Chassis Numbers Model TRK-12: Chassis KC -4, KK -7, RC -427, RS -83E, 105-125 volts, 60 cycles 420 watts (total) Chassis KC -4B, KK -7D, ,RC -427, RS - 83E, 105-125 volts, 50.60 cycles 420 watts (total) Model TRK-120: Chassis KC -4F, KK -7F, RC -427F, RS, 83E, 105-125 volts, 60 cycles 420 watts (total) Chassis KC -4J, KK -7J RC427F, RS - 83E, 105-125 volts, 50-60 cycles 420 watts (total) Models TRK-9, TRK-90 General Specifications TRK- 12 TRK-120 Height 405/8 in.; Depth 197/8 in. Width 345/8 in.; Weight 198 lb. Shipping Weight 275 lb. and Power Supply Ratings Model TRK-9: Chassis KC -4A, 83E, 105-125 Chassis KC -4C, 83E, 105.125 KK -7A, RC -427A, RS - volts, 60 cycles 420 watts (total) KK -7E, RC -427A, RS volts, 50-60 cycles 420 watts (total) Model TRK-90: Chassis KC -4H, KK7H, RC -427G, RS 83E, 105-125 volts, 60 cycles 420 watts (total) General Description Models TRK-l2 and TRK-120 arc consolvtype. high picture -definition, mirror -viewing, five channel, Television Receivers and three -band broadcast radio receivers enclosed in handsomely styled modern cabinets. Features of the Tele- vision receiver include: Twelveinch Kinescope; Styrol (humidity -resisting) r -f and if transformer forms: black and white pictures; single station selector switch: temperature com pensated condensers; iron core i -f and r -f tuning: double safety switch protection; safety -glass viewing shield: and extra large viewing mirror for wide angle viewing. Models TRK-9 and TRK-90 are direct viewing, high - picture -definition, console -type, five channel, Television Re- ceivers and three -band broadcast radio receivers in deluxe up- right modern cabinets. Television features of these receivers arc the same as for the TRK-12 and TRK-120, except that a nine -larch Kinescope is used. 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 PAGE 252-C TRK9, TRK90, TRKI2, TRKI20 RCA TUBE COMPLEMENT TELEVISION RECEIVER Electrical Specifications In KC -4, KC -4B (TRK-12) and KC -4A, KC -4C (TRK-9) Video Chassis: ( 1) RCA -6C7/1852 1st Det. (13) RCA6SK7 1st Sound I.F. ( 2) RCA -6J9 Oscillator (14) RCA-6AB7/1853 2nd Sound I.F. ( 3) RCA-6AB7/18S3 1st Pix. I.F. (15) RCA -6H6 Sound 2nd Det.-AVC ( 4) RCA-6AB7/1853 2nd Pix. I.F. (16) RCA -6N7 1st Sync. Sep. -Amp. ( 5) RCA-6AB7/1853 3rd Pix. I.F. (17) RCA -6Y6 -G 2nd Sync. Sep. ( 6). RCA -6B7/1853 ( 7) RCA-6AC7/1852 4th Pix. I.F, 5th Pix. I.F. (18) RCA -6N7 (19) RCA -6N7 Sync. Amp. Hor. Osc.Discharge ( 8) RCA -6H6 Pix. 2nd Det. (20) RCA -6L6 Hor. Output ( 9) RCA -6F8 -G AVC or Limiter (21) RCA5V4G (60 cycles) or (10) RCA-6AC7/1852 Video Amp. RCA -25Z6 (50 cycles) Hor. Damping (11) RCA -6H6 D.C. Restorer (22) RCA -6N7 Vert. Osc.-Discharge (12) RCA-12AP4/1803-P4 (TRK-12) or (23) RCA -6P Vert. Output RCA9AP4/1804P4 (TRK-9) Kinescope In KK -7, KK -7D (TRK-12) and KK -7A, KK -7E (TRK-9) Television Socket Power Units: (24) RCA -5T4 Low Voltage Rectifier (25) RCA -2V3 -G High Voltage Rectifier In KC -4F, KC -4J (TRK-120) and KC -4H (TRK-90) Video Chassis: ( 1) RCA-6AC7/1852 1st Det. (12) RCA-6SK7 1st Sound I.F. ( 2) RCA -6J5 Oscillator (13) RCA -6B7/1853 2nd Sound I.F. ( 3) RCA-6AB7/1853 1st Pix. I.F. (14) RCA -6H6 Sound 2nd Det.-AVC ( 4) RCA-6AB7/1853 2nd Pix. I.F. (15) RCA -6N7 1st Sync. Sep. -Amp. ( 5) RCA-6AB7/1853 3rd Pix. I.F. (16) RCA -6Y6 -G 2nd Sync. Sep. ( 6) RCA6AB7/1853 4th Pix. I.F. (17) RCA -6N7 Sync. Amp. ( 7) RCA-6AC7/1852 5th Pix. I.F. (18) RCA -6N7 Hor. Osc.-Discharge ( 8) RCA -6H6 Pix. 2nd Det. (19) RCA -6L6 Hor. Output ( 9) RCA-6SQ7 - Limiter (20) RCA -5V4 -G (60 cycles) or (10) RCA-6AC7/1852 Video Amp. RCA -25Z6 (50 cycles) Hor. Damping (11) RCA-12AP4/1803P4 (TRK-120) or (21) RCA -6N7 Vert. Osc.Discharge RCA9AP4/1804P4 (TRK-90) Kinescope (22) RCA -6J5 Vert. Output Note: An RCA -6H6 D.C. Restorer is added in some TRK120, TRK90. rn KK -7F, KK -7J (TRK-120) and KK -7H (TRK-90) Television Socket Power Units: (23) RCA5U4G (60 cycles, without D.C. Restorer), (24) RCA -2V3 -G High Voltage Rectifier RCA -5T4 (60 cycles, with D.C. Restorer), or RCA -5T4 (50 cycles) Low Voltage Rectifier TELEVISION CHANNELS (Selector Switch Positions) 1 50 to 56 mc. 3 66 to 72 mc. 2 60 to 66 mc. 4 78 to 84 mc. 5 84 to 90 mc. PICTURE SIZE (Approximate Mask Dimensions) TRK-9, TRK-90 31/ x 71/4 in. TRK-12, TRK-120 73/8 x 93/4 in Overall Video Band Width 4 mc. Scanning Interlaced, 525 line Horizontal (Line) Scanning Frequency (Sawtooth Wave) 15,750 cps Vertical (Field) Scanning Frequency (Sawtooth Wave) 60 cps Frame Frequency (Picture Repetition Rate) 30 cps Nove: This service note includes all changes that hase been incorporated since initial production, including the 44-50 m.c. channel and addition of the 60-66 nix. channel. deletion of IMPORTANT PRECAUTIONS A good ground should be connected to the re- ceiver at all times. Always wear gloves and shatter -proof goggles when handling Kinescope tubes. Do not eliminate the protection afforded by the interlock switches. ALWAYS replace the shield can over the 2V3 -G high voltage rectifier. The most dangerous portion of the H.V. supply is the plate lead of the 2V3 -G tube. Do not measure any voltages on the video chassis unless the primary leads of the high voltage trans- former have been unsoldered from the supply line, and taped. Use only one hand when working on the video or high voltage SPU chassis, and always connect a shorting lead to ground (first), then to the high side of both high voltage filter cpacitors. Make no voltage measurements on the high volt- age (7,300 volts) SPU chassis. Work on a television receiver should not be at- tempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment. 收音机爱 好者资料库 RadioFans.CN PAGE 253-C TRK9, TRK90, TRKI2, TRKI20 Precautions in Handling Kinescopes The Kinescope bulb encloses a high vacuum and, due to its large surface arca, is subjected to considerable air pres- sure. For these reasons, Kinescopes must be handled with more care than ordinary receiving tubes. The large end of the Kinescope bulb - particularly that part at the rim of the viewing surface -must not be struck, scratched or subjected to more than moderate pressure at any time. If the tube sticks, or fails to slip into its socket or de- flecting yoke smoothly, investigate and remove the cause of trouble. Do not force the tube. All RCA Kinescopes are shipped in special cartons and should always be left in the cartons- until ready for installa- LeAKIC CT, TAKv SKILVe H MESCO RE SCREEN 1C 1A e 4iz eaaaeeoo S.1 O 1 AANG INOIEATOe 00w1 YOIYRI r.DEUTV TIRING LANCE CONTROL SELECTOR CONTROL SELECTOR (OVERALL AND RADIO CONTROLS) eo.G.TNESS O CONTRAST I f TELEVISION STAT.eN SE.ETOR O L.EIDO D 1nNE mtD.Tmt. v.tiG I .OLO ODERATING CONTROLS) tion in the receiver. Keep the carton for future use. The RCA -I 2P4/1803 -P4 (12 -inch) Kinescope is equipped with a protective lid and shield. Do not at any time remove the close -fitting cone -shaped section of the protective shield from the Kinescope. This section should be installed with the tube in the cabinet and is designed to protect the user while handling the glass bulb. CAUTION: Do not open the shipping carton, install, re- move, or handle the Kinescope in any manner, unless shatter- proof goggles and heavy gloves are worn. People not so equipped should be kept away while handling Kinescopes. Keep Kinescope away from the body while handling. Operation RANGE IND CATO! RANGE SELECTOR MAGIC EYE Seel ore 000* VOLUMI CONTROL AN 12 ONLY A e TUNING CONTROL LOGO FIDELITY SELECTOR VERTICAL GOA,ZONTAL GOLD O GOLD I STATION SELEC TOR O CC 5 TINVNI NG t BRIGHTNESS O CONTRAST 1 (RADIO CONTROLS) Figure 1-Operating Controls, TRK-9, TRK-90 The Power -Volume control on the radio receiver turns on the power for the completer receiver. The Victrola, Radio, Television control selects the type of operation de- sired. There are three Victrola fidelity positions, four radio fidelity positions and three Television sound fidelity posi- tions on this switch. The furthetmost clockwise position be- ing the highest fidelity position for Television sound. Television Operation: Station Selector and Fine Tuning.-The outer ring O section of the central dual control knob on the Television panel selects the station from which it is desired to receive Television transmissions. Five Television channels arc covered as follows: (1) 50 to 56 mc. (2) 60 to 66 mc. (3) 66 to 72 mc. (4) 78 to 84 mc. (5) 84 to 90 mc. Set the station selector to the number corresponding to the frequency of the station from which it is desired to receive Television broadcasts. The inner section ,I of this knob is used for fine tuning and may eliminate moving ripples or distortion if due to interfering radio signals. Before the Television portion of the receiver is turned ON it is advisable to turn the Brightness and Contrast controls completely counter -clockwise to reduce the illumi (TELEVISION CONTROLS) Figure 2-Operating Controls, TRK-12, TRK-120 nation of the spot which appears on the Kinescope before the sweep circuits have started functioning. Contrast and Brightness Controls.-The inner I section of the Contrast -Brightness controls is the Contrast control and varies the black and white tones of the picture being received. Too much contrast gives blurred details and a lack of half -tones, while too little contrast makes it all half- tones or grays. Turning clockwise increases contrast from grays, to black and white. See Operating Instructions for this receiver. The outer ring O is the Brightness Control and affects the average illumination of the picture. Turning clockwise increases the brightness. See Operating Instructions for this receiver. An approximate adjustment for proper contrast is to turn the Contrast control fully counter -clockwise, then turn the Brightness control until the screen is slightly illuminated. Then reduce the Brightness control just sufficient to make the screen dark, then bring up the Contrast Control until the picture appears. A slight further adjustment of the Bright- ness or Contrast control may he necessary in some cases. A slight readjustment of the contrast control may aid synchroni- zation of the picture. Hold Controls.-The dual knobs on the Television panel marked Horizontal and Vertical Hold, control the pic- ture stability. The inner section designated by a I is the Horizontal Hold Control and when being set should be turned slowly to the point at which the picture locks in horizontally:,See Operating Instructions for this receiver. The outer ring section designated by 0 is the Vertical Hold Control and when being set should he turned to the point where the picture locks in vertically. These two controls on this dual knob should not ordinarily require readjustment after good picture reception has once been obtained. An occasional resetting may, be necessary due to changing to a different station, and to the gradual aging of the tubes. 收音机爱 好者资料库 RadioFans.CN PAGE 2 54-C TRK9, TRK90, TRKI2, TRK120 SERVICE DATA Kinescope Installation (TRK-9, TRK-90). 1. Remove back cover of cabinet. 2. Remove the two screws which secure the wooden block, on which the yoke is mounted, to the upper shelf, and drop this block and yoke away from the shelf. 3. Loosen the thumb screw in the center of the slotted block of wood on the tip shelf, pull this block of wood to- wards the rear of the cabinet and turn it so that the V slot on the front end of the block is to your right. 4. Wearing gloves and goggles, carefully slide the Kine- scope on the V in the block, and turn both the block and the Kinescope so that the Kinescope faces the viewing win- dow. Slide the Kinescope up to the mask in the window and fasten loosely in place by sliding the V block up to the bottom of the Kinescope face, and fastening it with the thumb screw. 5. Place the yoke and the wooden block on which it is mounted, on the Kinescope neck, rotate the block 90 from its originl mounting position in order to have it clear the top of the cabinet and slide it into position on the Kinescope neck. DO NOT FORCE YOKE. In some cases where the yoke lead is too short it may be necessary to loosen the V block and swing the Kinescope neck to the left in order to be able to place the yoke on the Kinescope neck without forcing. 6. Fit the upper part of the wooden yoke mounting block into the slot on the underside of the cabinet top and fasten the lower end of the block securely by means of the two screws. The Kinescope should be mounted loosely in place, so that the yoke is not forced on the Kinescope neck at any time. 7. Loosen the wing nuts on the yoke mounting bracket, and move the yoke forward on the neck of the Kinescope so that it pushes the Kinescope against the mask. Tighten the wing nuts to hold the Kinescope and yoke securely in this position. 8. It may be necessary to rotate the Kinescope, within the limits allowed by the high voltage second anode lead, with re- spect to the mask in order to obtain proper masking of the DEFLECTION YOKE CABLE RADIO CHASSIS ANT, LEAD TO RADIO, CHASSIS GrID. LEAD TO RADIO CHASSIS TELEVISION SOUND - CABLE KINESCOPE - CATHODE LEAD (YELLOW) TELEVISION RECEIVER CHASSIS TELEVISION INTERLOCK SWITCH (52) V BLOCK MOUNTING YOKE MOUNTING BLOCK Mr.Z- IWE inpd miqo 011 1X21 (x4) KIN GRID LEAD M (X6) F 1X91 M (XIO) (x B) (XT) SPEAKER M (X22) FIX 21) M(X12) KINESCOPE 2ND ANODE SOCKET LEAD (X 11) HI -VOLTAGE DEFL. VBLOCK YOKE BLOCK LEADS (H, G2 N8 ANODE O 1) RADIO POWER SUPPLY CABLE AC. CABLE TO INTERLOCKS _SPEAKER CABLE _FEED BACK CABLE F(X23) M(X24) TELEVISION INTERLOCK SWITCH -(SII TELEVISION -POWER SUPPLY CABLE TPOWERELEVISION j .I yti i SUPPLY UNIT RADIO POWER SUPPLY UNIT PILOT LAMP M(X14) AC. CABLE TO TELEVISION POWER SUPPLY 105_125 V. SUPPLY M-91112-1 edges on the Kinescope screen. Before rotating the Kine- scope, the screws holding the yoke mounting block should be loosened, so that the Kinescope neck will not be forced. 9. Move the V block forward so that it holds the bot- tom of the Kinescope in place. Tighten the thumb screw. 10. Place the second anode lead on the second anode cap at the side of the Kinescope. 11. After the receiver is operating, and if the picture is not squared with the mask, using a screw driver loosen the clamping screws on the band around the yoke and rotate the yoke until the picture is squared with the ma