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Rider TV6 - Early Television Foundation

1. PER AB195 FM Antenna Coil sese 69A 85 AM Oscillator Coil 694 86 1 FM Oscillator Coil 69A 87 FM Peaking Coil wound on R605 73A 5 11 RF Dual Choke sees 69A 102 Ratio Detector Transformer 72B 68 Audio Output Transformer for 21B1 chassis eene 79C 33 1 for 21C1 chassis IT 79C 33 2 1st IF Transformer includes R306 K307 C302A C302B 72C 96 6 2nd IF Transformer includes R309 72C 96 7 3rd IF Transformer includes C305 72C 96 8 Blocking Oscillator Transformer 79A 18 2 Vertical Output Transformer 79B 29 1 Deflection Yoke includes R412 R413 R445 C430 A3222 Horizontal Output Transformer includes tube cap clips 79C 30 2 Power Transformer 4 80C 26 1 1st IF FM Transformer for early 5D2 SetS 2B 98 for late 5D2 SetS 2B 98 1 Before replacing see 5D2 pro duction change on reverse side 2nd IF FM Transformer 2B 76 Ratio Det Transformer 72B 39 1st IF AM Transformer for early 5D2 SetS 72B 97 for late 5D2 setS 72B 97 1 Before replacing see 5D2 pro duction change on reverse side 2nd IF AM Transformer 72B 94 MISCELLANEOUS PARTS for TV_CHASSIS Sym Description Part No M201 Speaker Socktt ooooo s 88A 5 6 M202 Speaker Plug mST 88A 5 5 M203 Speaker DV DM estrene Ve d SR NN 78B 59 1 A e ea m ain tti nx 78B
2. 5 eee 98A 63 5 for Channel 6 0 5 98A 63 6 for Channel El caco va 98A 63 7 for Channel Bossi coimas as 98A 63 8 tor Channel 39 98A 63 9 for Channel 1310 e se 98A 63 10 for Channel 311 98A 63 11 for Channel 12 98A 63 12 for Channel 13 98A 63 13 Before inserting replacement coil L101 or 1102 see that teeth at inner end of coils fit to gether when fitted in detent plate at center of turret If necessary file teeth slightly Mixer Plate Coil 98A 45 77 Heater RF Choke 98A 45 13 Heater Oscillator Choke 98A 45 14 Sound Take off Coil includes R201 C201 6202 6526 72B 99 1 Video Peaking Coil 73A 5 12 Video Peaking Coil 73A 5 7 OJonn F Rider L303 L304 L305 L306 L307 L401 1402 L403 L404 L601 L602 L603 L604 L605 L606 L610 T201 T202 T301 T302 T303 T401 T402 T403 T404 T501 T601 T602 T603 T604 T605 Video Peaking Coil wound on o coii qe peR P REA RES commas 73A 5 13 Video Peaking Coil wound on R321 Heater RF Choke Heater RF Choke Trap Coil includes C314 72A 102 Horizontal Lock Coil includes C418 and R491 94A 17 Width Control 2 24 s ass oes 94A 29 1 Horizontal Linearity Control 94A 28 Focus Coll 06 8 69C 117 3 AM Loop Antenna includes C601 69C 116 1 FM Antenna
3. 60B 8 225 R417 18 000 ohms 1 2 watt 60B 8 183 R418 47 000 ohms 1 watt 60B 14 473 R419 2 200 ohms 1 2 watt 60B 8 222 R420 27 000 ohms 2 watt 60B 20 273 R421 8 2 megohms 1 2 watt 60B 8 825 R422 15 000 ohms 1 watt 60B 14 153 R423 1 000 ohms 1 2 watt 60B 8 102 R424 2 200 ohms 1 2 watt 60B 8 222 R425 12 000 ohms 2 watt 60B 20 123 T To secure proper high frequency characteristics order exact part from Admiral distributor or use IRC 100 000 ohms 1 2 watt 5 60B 7 104 R427 100 000 ohms 1 2 watt Ch EE 60B 7 104 R428 470 000 ohms 1 2 watt 4 60B 8 474 R429 4 7 megohms 1 2 watt 60B 8 475 R430 12 000 ohms 2 Wwatt 60B 20 123 R431 5 600 ohms 1 2 watt sarta 60B 8 562 R432 1 500 ohms 1 2 Watt 60B 8 152 R433 120 000 ohms 1 2 watt 60B 8 124 R434 25 000 ohms Hor Hold 75B 13 13 R435 8 200 ohms 1 watt 4 60B 14 822 R436 150 000 ohms 1 2 watt 60B 8 154 R437 1 megohm 1 2 watt 60B 8 105 R438 8 200 ohms 1 2 Watt 60B 8 822 R439 68 ohms 1 2 watt carbon reer 60B 28 44 R440 47 ohms 1 2 watt carbon resistor OnlY o 60B 28 45 R441 82 ohms 1 2 watt carbon resistor ONlY 60B 28 31 R442 6 800 ohms 2 watt EE 60B 20 682 R443 2 7 ohms 1 2 Watt
4. 64B 5 12 C403 0047 mfd mica EE e 65B 21 472 470 mm d mica C421 in 21B1 21C1 21H1 21J1 65B 21 471 330 mmfd mica in 21D1 65B 21 331 47 mmfd 5 1 500 volts mica C430 dp LO Sets is aa cis iors owed redo 65B 1 64 75 mmfd 5 1 500 volts mica E SA Aua 65B 1 66 C433 002 mfd 600 volts paper 64B 9 11 0047 mfd used in some 21D1 and 21J1 chassis see production changes C701 5 mmfd mica n 65B 1 62 C702 2to 20 mmfd trimmer 66B 8 5 C703A 0 to 420 mmfd C703B 0 to 108 ny gang 68B 32 C704 C705 C706 C707 C708 C709 C710 C711 C712 C713 C714 Sym L404 L701 L702 T202 T402 T403 T404 T701 T702 Note Dial drum spot welded to gang 50 mmfd ceramic 2 65B 6 4 005 mfd min ceramic 65A 10 1 1 mfd 200 volts paper 64B 5 30 005 mfd min ceramic 65A 10 1 1 mfd 400 volts paper 64B 5 20 100 mmfd ceramic 100 mmfd ceramic 01 mfd 400 volts paper 64B 5 25 250 mmfd ceramiC 65B 6 5 01 mfd 400 volts paper 64B 5 25 002 mfd 600 volts paper e 64B 5 14 COILS and TRANSFORMERS Description Part No Focus Coil for 21B1 21C1 21H1 21J1 69C 117 3 for 21D1 21E1 supplied less plug 69C 117 4 AM Antenna Loop Antenna includes C701 C702 69C 116 2 Iron Core Ant in
5. uU v304 Aar l 13 v306 m ab esos sje d 120 C40 USED IM COMBI BATION MODELS ONLY R2088 En M502 an LT INTERLOCK 100K 100k L G BRIGHTNESS e de TAG 41 PILOT LIGHT 1m conection 11 COMBINATION SETS ONLY Leen Gaur SETS vd Vd d mas I 04 18361 H V RECTIFIER v407 E V v204 6SNT6T 6BQ6 6T 4 HOR OUTPUT d V405 Moy UP wa v406 302 LS duos no gt a 4 cag 330 tu LO LACE a 330 2 H Ar 7 SICH de 5 L305 A Se inm Mn M oho Ws DO C103 001 Jux I20K mec Fwa Gent Ier Maer Loss UD usc 4 P 1500 mat 7 Dit EO vios 9 1 SO T vil 28 wb dE em 2st 62138 tano 71 Focus con leste E wor novo H O L404 id TELLS O e G us JOMFD 250 0 E v202 RI nn 0 i H tt mc veo n mo Jom coi e 5D2 radio circuit and connections also shown MODELS 36R37 36R45 36R 6 Ch 21B1 21C1 Radio Ch 5D2 9 39Vd AL IVAIWOV RUN 1 in 21C1 CHASSIS Resistor R430 was changed from 12 000 ohms Y watt to 12 000 ohms 2 watt part 60B20 123 This change was made to prevent possible increase in resistance of R430 due to in creased power dissipation RUN 2 in 21C1 CHASSIS In early sets R210 was 270 000 ohms R211 was 100 000 ohms In later sets R210 was changed to 150 000 ohms watt part 60B8 154 R211 was changed to 47 000 ohms watt part RESISTORS Sym Description Part
6. 60B 28 47 R444 470 000 ohms 1 watt 60B 14 474 R445 1 000 ohms 1 2 watt 4 60B 8 102 R446 750 ohms Focus eee 75B 13 16 R501 270 000 ohms 1 watt 4 60B 14 274 R502A 2 725 ohms 2 5 watt x R502B 2 650 ohms 10 vau candohm 61A dii 240 ohms 1 2 watt 595 used in R602 early 5D2 sets 60B 7 241 1 500 ohms 1 2 watt used in late 5D2 sets ed 60B 8 152 Before replacing see 5D2 pro duction change on reverse side R603 22 000 ohms 1 2 Watt 60B 8 223 R604 470 ohms 1 2 watt 60B 8 471 R605 820 ohms 1 2 Watt Part of L606 R606 470 ohms 1 2 watt 60B 8 471 R607 22 ohms 1 2 Watt 60B 8 220 R608 1 megohm 1 2 Watt 60B 8 105 R609 6 200 ohms 1 2 watt 5 60B 7 622 R610 470 000 ohms 1 2 watt 60B 8 474 R611 10 000 ohms 1 2 watt 60B 8 103 R612 1 000 ohms 1 2 watt 60B 8 102 R613 47 000 ohms 1 2 watt 60B 8 473 R614 390 ohms 1 2 watt aaa 60B 8 391 R615 27 000 ohms 1 2 Watt 60B 8 273 R616 15 000 ohms 1 2 watt 4 60B 8 153 R617 15 000 ohms 1 2 watt 60B 8 153 R618 100 000 ohms 1 2 watt 4 60B 8 104 R619A 1 megohm E R619B 2 megohms Tone Dual control 75B 11 12 R619 includes on off switch SW603 R620 10 megohms 1 2 watt 60B 8 106 R622 560 000 ohms 1 2 watt 60B 8 56
7. CAD USED IN CONBI BATION MODELS ONLY 1004 1004 E CH ORIGHTUESS p A 20D ANODE LEAD 12 54V 18301 H N RECTIFIER 6SNTCT NOR OSC V405 or Un wn aorkk Jon 330 8200 HOR OUTPUT v406 o3 o 004 a L306 BLACK A usn 800 er a Tio Hi LI04 o Nap ir s ED FL 00 Se ius wat NL SNS Jen Ir 120k INES Fuon orive oo Liose D I 1036 o O Toos 1500 50k 7 un VIO Di Tr CIS 001 M34 J zap c2150 cause wor novo 2 d e R435 STONFO 7 vio2 124 TELLO i v 3 b nee j um WI Laos Cl Radio Circuit VOLUME HD CONTROL e D 3 FRONT PIN VIEW OF PLUG M708 REAR INSIDE CHASSIS VIEW OF SOCKET 503 TOME CONTROL CHASSIS 21D1 Radio Ch 3C1 l 9 39Vd AL TVAIWOV
8. INDEX ALIGNMENT INSTRUCTIONS 6 7 INSTALLATION DATA Sege eg o 1 PARTS LIST o ooo nooo 4 5 PRODUCTION CHANGES 4 PAGE SCHEMATIC 3 TOP VIEW TUBE LAYOUT 2 TRIMMER LOCATIONS 6 VOLTAGE MEASUREMENTS 2 3 General BUILT IN ROTO SCOPE ANTENNA The built in Roto Scope antenna is operated by the antenna control lever which extends from the back of the cabinet near the top Set the antenna control lever in that one of its three positions left center or right which gives the clearest picture When an external indoor or an outdoor antenna is required be sure to disconnect the built in Roto Scope antenna leads from the antenna terminal board When disconnected tape the Roto Scope antenna lead lugs and place them away from the chassis INPUT IMPEDANCE and TRANSMISSION LINES The input impedance to the receiver is 300 ohm balanced between antenna terminals When using a 300 ohm transmission line connect it across the antenna terminals Input impedance between one antenna terminal and chassis is approximately 75 ohms When using 75 ohm coaxial transmission line connect the outer conductor to the chassis and the inner conductor to either antenna terminal use the terminal which gives the most satis factory picture on the weakest station FUSE LOCATION The horizontal output circuit is fused with a 14 amp 250 volt fuse part 84A4 2 The fuse is located in the
9. 37A 34 pair for 26X75A Walnut 26X76A Mahog Hinge Knife 35E 131 56 pair for 26X65A Walnut 26X66A Mahog 35E 131 57 pair for 26X67A Blond 35E 132 53 pair for 26X75A Walnut 26X76A Mahog 33C 53 9 Knob Television Channel 33C 53 10 ES Ke Tuning 33C 53 11 e Off Volume 33C 53 12 H tt Picture 89A 22 1 Line Cord and Interlock Socket 1A 7 9 57 Screw for control escutcheon 4x3 8 RH WS 1A 6 24 59 for mtg back bumper strip 6x RH WS 1A 22 8 71 ii for picture window 6x2 RH WS 1A 67 43 71 S for mig TV chassis 4 20x1 1 32D 127 Sheet Insulating mounts on cabinet in front of picture tube 78B 47 2 Speaker 10 PM Spring Escutcheon Door 18A 41 flat bronze spring used with 23D60 3 escutcheon for left or right hinge coil wire spring used with 23D60 6 escutcheon 19A 65 2 for left hinge facing front 19A 65 1 for right hinge facing front 18A 43 1 Spring A Knob Tension for Tuning knob 18A 43 2 Wi for Off Volume knob 18A 43 3 ei for Channel knob Trim Picture Window Plastic 55 long used with 23D61 picture window 33A 57 1 Maroon for Walnut Mahogany 33A 57 4 Beige for Blond 5A 4 14 Washer Felt used behind Channel knob 5A 4 15 We used behind Picture knob Window Picture 23D 61 with round holes for mtg with screws 23D 61 1 with oblong holes for mtg with Spring clips If only the mounting lugs are broken on picture window 23D61 1 a metal replacement lug part n
10. 88A 20 6 Cable 12 wire including 88A20 1 plug and 88A20 6 cover AB216 acket Mounting or Off Volume and Tone control 15A 409 or Radio Phono Switch TOI M 15A 385 or Tuning Sie eirca er harm REY neris 15A 394 p IF Transformer Mt8 oooooooo oo 72B 28 10 ver Assembly Chassis A1880 l Back and Bracket Assembly A1881 11 Cord 50 length needed 50A 1 3 HS cales macros mes 22B 23 1 cutcheon Radio J SES SRR 23D 63 3 ommet Gang Mounting esee 12A 1 2 x Nut Switch Retaining colere 2A 2 11 71 ob Radio Phono Tuning e 33D 55 1 BD RONG sesasine as IR e 33D 55 4 ob Volume ae ss saait re 4 33D 55 5 ckwasher Osc Coil Gang 6 I T 3B 1 25 71 ot Light 447 Mazda cece eee oee 81A 1 8 inter Dial s m EAN PEN 25A 38 dt Ti ici EEN KENE ee EELER EE oe su 28A 48 1 ip Button for mtg dial SCAlE EE 13A 1 1 71 ket Tube pin for 6BA6 6AVG 87A 3 7 pin for 6BE6 celerem 87A 24 3 ket Pilot Light includes 14 lead 82A 2 3 ket Pilot Light includes 9 lead 82A 2 9 cer Sleeve for gang mounting ge 29A 2 1 71 cer Sleeve 3 1 4 long for mounting yhono radio switch G se co ahaa ANG 29A 3 15 ing Dial Cord Tension esee 19B 1 3 sher Vellutex Oscillator coi mtg 5A 1 21 MODELS 16R12 26R12 26R25A
11. also specify cabinet manufactiren s code letters usually burned or stamped on the back John F Rider rail of cabinet Wood parts are supplied only if old part cannot be repaired When ordering describe condition of old part in detail Escutcheon Door 23D 60 2 used with 23D 60 3 escutcheon mounts with flat door spring 23D 60 7 used with 23D 60 6 escutcheon mounts with coil door spring 23D 63 3 Escutcheon Radio 12A 32 7 Gasket Sponge Rubber for picture window 36B 3 53 Grille Cloth 2 pieces Grounding Clip includes 30 braided wire A3229 for grounding 23D 61 picture window A3232 for grounding 23D 61 1 picture window 2 35E 136 56 Hinge Eie pair for Radio and TV Compt 35E 136 58 for Album Compt 82A 10 8 Jewel Pilot Light green 33D 55 1 Knob Radio Radio Phono Tuning 33D 55 4 Off Volume 33D 55 5 a Tone 33C 53 9 Knob Television for Channel 33C 53 10 bw EN for Tuning 33C 53 11 Y dd for Off Volume 33C 53 12 H d for Picture 89A 22 1 Line Cord amp Interlock Socket 6A 4 6 0 Line Cord Mounting Rivet 81A 1 8 Pilot Light 47 37A 31 1 Pull Record Changer Slide 46A 4 5 Rod Wooden Dowel Antenna Mtg 1A 7 9 57 Screw for control escutcheon 4x3 8 RH WS 1A 6 24 59 M for back and bumper strip 46x1 2 RH WS 1A 7 23 71 n for pic window 46x3 8 RH WS 1A 67 43 71 361 375 C2 71 for TV chassis 1 4 20x1 for mounting slide out bracket to slide 6 32x3 8 FH MS
12. facing front CABINET PARTS for 16R12 Mahogany 26R12 Mahogany Above model numbers may have the suffix N Part No A3131 A3287 A3289 A3015 46B 26 34E 36 2 34E 37 2 44B 183 44B 187 28A 60 7 23D 60 1 23D 60 5 23D 60 4 23D 60 8 12A 32 6 36B 3 20 36B 3 44 33C 53 9 33C 53 10 33C 53 11 33C 53 12 89A 22 1 6a 4 10 Description Antenna Built in TV Back Cabinet includes line cord for table model for console model Bate Board Speaker for table model for console model Plastic 16R12 Mahogany 26R12 Mahogany Carton and Fillers for table model D for console model Caster for cabinet leg Escutcheon Control less door with I shaped slot for flat door spring with U shaped slot for coil door spring Escutcheon Door used with 23D 60 1 escutcheon mounts with flat door spring used with 23D 60 5 escutcheon mounts with coil door spring Gasket Sponge Rubber for back of pic window Grille Cloth for table model H for console model Eno TV maroon Channel Cabinet maroon Tuning T maroon Off Volume Ke maroon Picture Line Cord and Interlock Socket Mounting Rivet for line cord TVAIWOV O1 9 39Vd AL 85 437 C2 71 Screw for pic window 48 32x7 16 BH MS 65 375 C2 71 P for cabinet back 6 32x3 8 BH MS 1A 71 3 57 for control escutcheon 4x3 8 RH ST 1A 67 44 71 for TV chassis 1 4 20x1 1 4 78B 59 1 Speaker 5 PM for
13. for mtg picture window 18A 41 Spring Hinge for mtg escutcheon door 18A 43 2 Spring TV Knob Tension Off Volume 18A 43 1 Spring TV Knob Tension Tuning 18A 43 3 Spring TV Knob Tension Channel Tilt Out Parts See Parts For Tilt Out Mechanism 5A 4 14 Washer Felt behind Channel knob 5A 4 15 Washer Felt behind Picture knob 5A 4 11 Washer Felt behind radio knobs 23D 67 Window Picture If only mounting tab is broken on picture window a new metal tab part number 15A668 can be installed with a soldering iron In strcutions Form 340 included with tabs To insure proper matching and fit also specify cabi net manufacturer s code letters usually burned or stamped on back rail of cabinet Wood parts are supplied only if old part cannot be repaired When ordering describe condition of old part in detail CHASSIS 21B1 2101 S 9 39Vd AL IVAIWOV TELEVISION ALIGNMENT PROCEDURE ALIGNMENT ADJUSTMENT IDENTIFICATION Adj Symbol Frequency Function Al 1303 25 3MC 3rd IF Transformer A2 T301 25 3 MC Ist IF Transformer A3 T302 23 1 MC 2nd IF Transformer A4 L103 23 1 MC Mixer Plate Coil A5 T201 4 5 MC Primary of Ratio Detector Transformer A6 L201 4 5 MC Sound Take off Coil Adj Symbol Frequency Function A7 T201 4 5 MC Secondary of Ratio Detector Transformer A8 C102 Trimmer RF Amplifier A9 C104 Trimmer RF Amplifier A10 C107 Trimmer Mixer All C110 Trimmer HF Oscillator A12 L102 Sl
14. 000 ohms 1 2 watt 60B 8 684 R315 4 700 ohms 1 2 watt 5 60B 7 472 R316 Picture control sees See R208B R317 47 000 ohms 2 Watt 60B 20 473 R318 56 000 ohms 2 Watt BOB 20 563 R319 3 000 ohms 15 watt candohm 61A 3 14 R320 33 000 ohms 1 2 watt Part of L303 R321 10 000 ohms 1 2 watt Part of L304 R322 4700 ohms 2 Watt 60B 20 472 R323 8 200 ohms 1 2 watt 60B 8 822 R324 680 000 ohms 1 2 watt 60B 8 684 R325 560 000 ohms 1 2 watt 60B 8 564 R326 100 000 ohms 1 2 watt 60B 8 104 R327 100 000 ohms Brightness 75B 13 12 R328 22 000 ohms 1 2 watt 4 60B 8 223 R401 22 000 ohms 1 2 watt 60B 8 223 R402 8 200 ohms 1 2 watt 4 60B 8 822 R403 8 200 ohms 1 2 watt 60B 8 822 R404 1 5 megohms 1 2 watt 60B 8 155 R405 1 megohm Vertical Hold 75B 13 14 R406 1 megohm 1 2 Watt 60B 8 105 R407 8 200 ohms 1 2 watt 60B 8 822 R408 2 5 megohms Height 75B 13 3 R409 1 megohm 1 2 Wwatt 60B 8 105 R410 3 000 ohms Vert Lin 75B 13 7 R411 820 ohms 1 2 watt 60B 8 821 R412 560 ohms 1 2 watt 60B 8 561 R413 560 ohms 1 2 Watt o o 60B 8 561 R414 2 2 megohms 1 2 watt 60B 8 225 R415 820 ohms Zwatt ess 60B 20 821 R416 2 2 megohms 1 2 watt
15. 11 Rubber Insert 1 diameter bottom and side support of rectangular picture tube 12A 16 1 Rubber Grommet for 2nd anode load 12A 1 15 Screw Wing for deflection yoke 1A 101 1 71 Shield T be ee ee oor ttn 87A 7 7 Shield Base Tube ss ss ee EEN cece eames 87A 7 6 Socket Tube miniature bakelite 7 pin 87A 3 7 Octal Plain 5 04 ect pang Oe seers 87A 5 1 octal ringmount mica filled 87A 20 2 miniature 9 pninl eee 87A 14 2 picture tube y eeh E EEN ENEE NR soniarus 87B 31 8 Spring HV Contact for front of round picture tube 18A 37 Spring Picture Tube Grounding used on rectangular tubes only 19A 23 2 Spring Support for 2nd anode lead 19A 66 Washer Spring for mounting picture positioning lever 4A 5 10 71 Webbing Rectangular Picture Tube Mtg Strap 42 length seses 620 s006 ER mn 50A 3 4 PARTS for MOUNTING 19 PICTURE TUBE m Description Part No 103 Socket Focus Coil 5 contact wafer 87A 4 3 104 Plug Focus Coil 5 pin Sese v 88A 3 5 Cover amp Insulator for 88A3 5 plug 88A 3 4 105 Socket Deflection Yoke 6 contact molded 87A 30 2 106 Plug Deflection Yoke 6 pin includes interlock erger ve Suerg rege gt 88A 9 1 Cover amp Insulator for 88A9 1 plug 88A 17 ind Tube Front Insulating Plastic 33B 59 2 ind Tube Reta
16. 26R26A 26R35A 26R36A 26R37A 26X55A 26X56A 26X65A 26X66A 26X67A 26X75A 26X76A 3035336 OB 2181 01 D51 E1 J1 PARTS for PHONO COMPARTMENT LIGHT and JEWEL LIGHT M505 Socket and Leads miniature 82A 11 58 M506 Plug 4 pin round o oooo 88B 22 1 Cover and Insulator for 88B22 1 88B 22 3 M507 Socket and Leads candelabra 82A 12 1 SW502 Switch Light EE TTA 29 Brack t Switch ssec ER eerie mmn 15B 502 Bulb Light 7 watt candelabra Mazda 7C7 81A 2 4 Bulb Light miniature 47 Mazda 81A 1 8 Light Assembly Complete less bulbs AB209 Shi ld ZE seng sss uaa hi seam KE Age ve 82A 13 Washer Insulating c oooo oooocr 5A 1 31 CABINET PARTS for 36R37 Blond 26R45 Walnut 36R46 Mahogany When ordering parts for these models use this list FIRST then see Form No S338 1 for any parts not listed here Part No 23D 60 1 23D 60 5 23D 60 4 23D 60 8 18A 41 19A 65 2 19A 65 1 Description Escutcheon Control less door with I shaped slot for flat door spring with U shaped slot for coil door spring Escutcheon Door used with 23D60 1 escutcheon mounts with flat door spring used with 23D60 5 escutcheon mounts with coil door spring Spring Escutcheon Door flat bronze spring used with 23D60 1 escutcheon for left or right hinge coil wire spring used with 23D60 5 escutcheon for left hinge facing front for right hinge
17. 49 1 12 PM ognie ern EE ER 78B 56 2 M204 Socket Audio Input Heke ess 88A 1 M401 Horizontal Output Fuse 1 4 amp 250 MOS siria 84A 4 2 Fuse Holder ee camera 84A 5 1 M501 Interlock Socket Male 89A 22 2 M502 Line Cord with interlock socket 89A 22 1 M503 Cable Socket Combination models only esses 88A 20 2 SW501 Switch On Off Power S P D T Part of R208 V306 Picture Tube 16RP4 or 16TP4 Bracket Deflection Yoke Holding 15A 572 Bracket Picture Tube Mounting Supports front of picture tube Right side facing tube 15B 615 1 Left side facing tube 15B 615 2 M126 Bracket for mtg picture tubs focus coil A Bottom Bracket Tuner Shaft Bakelit Clamp Picture Tube Front M Bracket clamps bracket t Clamp Webbing for mtg pi Clip Tube Cap for 6BQ6GT tube for 1B3GT tube Connector Lead 2nd Anode i IGE BEER We Cover IF Strip Saba OSS Se Fuse Holder Insulating Plate for 2nd anod condenser mtg Ion Trap for 16TP4 picture tube for 16RP4 picture tube Lever Focus Coil Adjusting Lock 1B3 Mounting Shell Dis Pilot Light 447 P lot Light Socket used in co models 2 acsi rp Rubber Channel 1 long for tube bracket Rubber Collar mounted over tube neck Rubber Grommet 2nd Anode Rubber Insert 1 diamter bc side support of p
18. AND IS MOT GROUNDED cht EM DE GAUG GACS GAUG GAGS id L103 ISU IF 200 IF 380 IF i 19 2 v301 SEL 2 pg L307 4 Fg D I i uc 00 d dr GE 3 Face geed fi tio C4 n zu i VA no va iJ RF OSC tios 3 qot Lioac e VIO28 15K Gd l cno runas 53 Ton et RIOS 001 00 le mm ew o Je mite en eu 1000 Ch I I D I vm VERT to du ID T HOR Y rs LL d s m 1 i abant Bov V 26SNTCT 6W6cT EA SYNC SEP 1 265NTCT 6ALS VERT OSC asp VERT OUTPUT m A CLIPPER ws SING IN SYNC DISC MAC V40lA v402 BLUE T H v40IB v404 C3 CRT Cap BLUE q p T402 s c Tm Dm Na CH 5600 4 E HA a T403A 406 Zuan o m S VERTICAL ar n woe DEF YORE y Js un 3 3 Sa MM cals Ge get MN 3 TOTAL 1C Di D m sa wn van i d n Hai C407 Ip 7 EU sek Am D 6909 wm Za cus bag mr su mn i m T can n vu at I it HR BI wm UU zt mE s EL Schematic for 3CI ura aem 6BE6 ssor m LATE sets BANG Cr la CONVERTER DET AVC AF AN NA v7OI T702 r sw 701 COLOR DOT 1 uii 2 L702 3 ATO6 INES H ls OJohn F Rider ision Chassis 16 round tube Bi co SOUND ANP SOUND OUTPUT won 4 v203 v204 P 4 BLUE l Troe M20 M202 cats eer YELLOW 65 6ALS 1303 VIDEO DET A ACC 253NC v304 PICTURE TUNE VOLTAGES TAKEN FLOW TIRE SOCKET VERT SOCKET REMOVED FOON TOBE SOSH 15 PART OF RIN yer Jean sy IO Tee
19. M CA vococcoonicacn o 65B 21 472 0047 mfd GOEN or 65B 21 472 1 mfd 600 volts paper 64B 5 5 047 mfd 600 volts paper 64B 8 9 100 mfd 50 V 20 mfd 450 V gt electrolytic 67C 15 18 80 mfd 350 V 02 mfd 400 volts paper 64B 5 24 01 mfd 400 volts paper 64B 5 25 Electrolytic 2 sese See C307B OL mid mica ess 65B 21 102 MOL mfd mica oorr m 65B 21 102 47 mfd 400 volts paper 64B 9 72 005 mfd 600 volts paper 64B 5 12 047 mfd 400 volts paper 64B 9 28 01 mfd 400 volts paper 64B 5 25 0039 mfd 5 silver mica 65B 1 63 330 mmfd micn eese 65B 21 331 330 mm d MicA oo 2 205 65B 21 331 470 mmtfd mic eee cesses avs 65B 21 471 Electrolytic 2c o ceo erro See C213B 20 to 280 mmfd trimmer Hor Drive a wn AN 66A 30 1 Electrolytic eee ee rrr See C213C 047 mfd 600 volts paper 64B 5 7 25 mfd 600 volts paper 4 64B 5 3 02 mfd 400 volts paper 64A 2 9 047 mfd 200 volts paper 64A 2 8 500 mmfd 20 000 V ceramic 65B 18 5 47 mmfd 5 1 500 volts Silver MiC2 ooooooomoo 65B 1 64 1 mid 400 volts paper 64A 2 10 ElectrolytiC co o 0o o eo See C307C 0022 mfd 600 volts paper 64B 9 11 2 to 20 mmfd trimmer Part of L601 001 mfd min ceramic 65B 6 41 486 mmfd max AM RF 15 mmfd max FM RF 114
20. No TR101 3 900 ohms 1 2 watt R102 47 000 ohms 1 2 watt y R103 10 000 ohms 1 2 Wwatt R104 2 200 ohms 1 2 watt TR105 4 700 ohms 1 2 watt R106 220 000 ohms 1 2 watt R107 10 000 ohms 1 2 watt TR108 4 700 ohms 1 2 Watt R109 15 000 ohms 1 2 watt R201 470 000 ohms 1 2 watt 60B 8 474 R202 82 ohms 1 2 watt carbon resistor Only o ooo oo 60B 28 31 R203 1 000 ohms 1 2 watt 60B 8 102 R204 390 ohms 1 2 Watt 60B 8 391 R205 10 000 ohms 1 2 watt 5 60B 7 103 R206 10 000 ohms 1 2 watt 5 60B 7 103 R207 47 000 ohms 1 2 watt 60B 8 473 R208A 250 000 ohms Volume R208B 1 500 ohms Pun enn 75B 11 16 R208 includes switch SW501 R209 4 megohms 1 2 watt 60B 8 475 R210 150 000 ohms 1 2 watt 60B 8 154 R211 47 000 ohms 1 2 watt 60B 8 473 R212 1 megohm 1 2 watt 60B 8 105 R213 330 ohms 1 watt eee 60B 14 331 R301 10 000 ohms 1 2 watt 5 60B 7 103 R302 1 000 ohms 1 2 watt 60B 8 102 R303 1 000 ohms 1 2 Watt 60B 8 102 R304 1 000 ohms 1 2 watt 60B 8 102 R305 47 ohms Lwatt esee 60B 14 470 R306 18 000 ohms 1 2 watt 60B 8 183 R307 1 000 ohms 1 2 watt 60B 8 102 R308 68 ohms 1 2 watt carbon resistor only 6 60B 28 44 R309 10 000 ohms 1 2 watt L
21. Shielded Cable 89A 29 11 M608 Plug 14 Pin 88A 20 1 Cover Plug for M608 88A 20 12 Cable 9 wire includes plug M608 AB216 Socket and Leads Pilot Light 82A 2 3 SW601 Switch PH AM FM includes SW602 TEB 22 SW602 Switch Phono Motor 76B 23 SW603 Switch ON OFF Power S P D T Part of R619 Antenna Lead 300 ohm transmission line 32 length Su e e nee se wee 95A 18 11 Bracket Tuning Sleeve 15A 394 Clamp Cable SEAN eh eve 11A 2 9 Cover Assembly ChasSiS A1880 Dial Back and Bracket Assembly A3153 Dial Cord 44 length 50A 1 3 Dial Scale E 22B 22 1 Escutcheon Radi0 o ooooooooo 23D 63 1 Grommet Rubber Gang mounting 12A 1 4 Pilot Light 447 oooooo o 81A 1 8 Plate SWIC ces ero Ser rires 15A 409 Pointer Metal Dial KEEN 25A 37 Pointer Cover PlastiC 25A 38 Sleeve Spacer Gang mounting 29A 2 10 71 Sleeve Spacer AM loop mounting 29A 3 15 Snap Button for mounting dial scale 13A 1 1 71 Socket Tube for Miniature Tube 7 pin 87A 3 7 for Miniature Tube 9 pin 87A 25 2 Speed Nut for mtg radio Ee 2B 12 4 68 Spring Dial Cord Teonnnn 19B 1 3 Spring Tube Retainer for 12AT7 19A 56 1 RECORD CHANGER PARTS Model RC500 or Model RC550 record changers are used The ch
22. chassis 15A 616 jicture tube 15A 526 m 88A 16 8 19A 54 includes E 88A 16 7 TP as 15B 641 TM 84A 5 1 ode filter EE E 32A 135 1 ARAS 94A 15 2 AAA 94A 15 1 O EAS 15B 574 disk e 15A 589 AR 81A 1 8 combination EE 82A 11 58 or picture M 12A 9 11 r SS EE 12B 40 e Housing EP 12A 2 7 bottom and be 42A 16 1 6 x3 8 x2 IPRC 12A 5 6 oa pepe SE 87A 7 7 vias 3 dated 98A 45 73 LX d ps 87A 6 3 i tube socket 88A 27 1 vns a 87A 3 7 R e AA 5 1 lled 87A 20 2 dais E rg 87A 25 1 E DNR s 87B 31 5 cx Vales K 10A 28 dinge sss ise 19A 23 2 B 3 3 mr e 94A 18 4 Strap EE 50A 3 4 S PARTS 4C18 4 n Part No issy Sharp 16 long REESE EIL 98A 45 92 ng Rotor RT TI 98A 45 95 Grounding 98A 45 94 for 676 98A 45 73 for 6AG5 87A 7 7 ig Osc coil 98A 45 52 er Deer a 98A 45 63 for trimmers 98A 45 31 36x5 8 98A 45 33 6 32x1 4 98A 45 62 EA 98A 45 88 nded Silver with r for Sharp Tun mtg bracket 98A 45 86 omplete 94C 18 4 dia CAUSE 98A 45 82 16 long 98A 45 81 acket Assembly tacts 98A 45 84 g Rotor Contact 16 x1 2 98A 45 83 ear Turret Shaft 3 64 dia 98A 45 85 sembly less ft and 3 16 yression 98A 45 91 MISCELLANEOUS PARTS for 5D2 RADIO Sym Description Part No M601 Socket Phono Input 88A 1 M606 Socket Phono Motor 88A 8 7 M607 Plug and
23. control fully to the right clockwise d Connect sweep generator to antenna terminals If sweep generator does not have a built in marker generator loosely couple a marker generator to the antenna terminals To avoid distortion of the response curve keep sweep gen erator outpul at a minimum marker pips just barely visible Connecting a 1 volt battery negative to test Marker Gen Freq MC Sweep Gen Frequency lator adjustment can be made See channel frequency table on previous page slug A12 NOT IN EARLY SETS WITHOUT TRAP L30T Fig 33 Overall RF and a6db OR 50 IF Response Curve D A MEASURED FROM HIGHEST PEAK 2 SERVICING RADIO SEPARATELY The radio receives its operating voltages from the power supply on the TV chassis It is necessary to use a separate power supply if the radio is to be operated without the TV chassis The 2PA1 power sup 3000 0 5 WATT ply which is used in radio phono television combination sets with the 20Z1 12 picture television chassis and 5B2 radio can be used to operate the 5D2 radio if a 3 000 ohm 5 watt resistor part num ber 6141 15 is connected between pins M and N of the 2PA1 socket as illustrated OVERALL RF and IF RESPONSE CURVE CHECK Step 1 and HF OSCILLATOR ALIGNMENT Step 2 Using sweep generator and oscilloscope While sweeping the RF band pass channel 13 or other unassigned high channel check the overall response curve o
24. deflection yoke coil and slightly rotate the yoke E until the picture is straight Before tightening the wing nut be sure that the yoke is moved as far forward as possible If the picture is off center it can be centered by using the picture position ing lever and when necessary re posi tioning the focus coil around the pic ture tube neck Fol low the instructions given below Note that the picture and down Picture Tilted Adjust Deflection Yoke Coil otherwise corners of the picture may become shaded Picture Not Centered Adjust Picture Positioning Lever positioning lever can be moved sideways or up b Push the deflection yoke coil E as far forward as possible In some cases it may be necessary to loosen the two yoke bracket support screws D at the sides of the upper mounting bracket move the bracket up or down and then move the deflection yoke coil as far forward as possible Shaded corners may also result from use of the wrong ion trap The 16TP4 picture tube uses ion trap 94A15 2 the 16RP4 picture tubes uses ion trap 94A15 1 The part number is stamped on the ion trap magnet SCHEMATIC NOTES D M G etc are run numbers and indicate a production change Run numbers are rubber stamped at rear of chassis Op A8 O etc indicate alignment points and align ment connections TV VOLTAGE DATA Voltages given on schematic diagram e PICTURE control turned full
25. here to insure best performance and ease in tuning It is especially important that the Channel Slugs and lon Trap be adjusted upon installation or servicing of every set For best results all checks or adjustments should be made using a transmitted television test pattern A mirror placed in front of the picture tube screen will be of help in observ ing the picture while adjusting rear panel controls NOTE If both radio and television are turned on in combination models neither unit will operate Be sure set owner has been properly instructed on the operation OJohn F Rider E SE Tune in a picture as instructed in the customer in struction leaflet note illustrations on interference effects ADJUST 3 LE SLUGS Individual channel oscillator adjustment of every receiver should be checked upon installa tion or servicing If this adjustment is properly made it is possible to tune from one station to another by merely turning the CHANNEL con trol and if necessary slightly readjusting the TUNING control With correct oscillator channel ad justment best picture and satisfactory sound will be located at the approximate center half rotation of the range of the Tuning control This adjustment can be made without removing the chassis from the cabinet Adjust as follows a Turn the set on and allow 15 minutes to warm up b Set the CHANNEL knob for a station set other con trols for normal picture and sound c Set TUNI
26. naoz mo Di AA 8200 8220 ooer T403A VERTICAL esor jor eas Tech DEF YORE 48 5 0 E Joos EI ze Schematic for 21B1 21C1 Television Chassis 5 RECORD CHANGERS Model RC500 See page RCD CH 21 1 Model RC550 See page RCD CH 21 9 John F Rider A6 GALS 6AU6 M 200 DET FM RATIO DETECTOR RU 1ST AUDIO 03 Aiit v604 A v605 v60 v6os5 v603 Hr Fa 95r AN JSN FM osr av FRONT PIE VIEW OF PLUG po REAR MSIDE CHASSIS VIEW OF SOCKET N503 aot Wi Cay H 2613 D M603 CARTRIDGE esu cem aso a yoro RT OF F60I Je 25077 4708 02 1 I i M60 M602 M605 M606 Wie a IDN 5 k lo ou ED INPUT a M604 PHONO MOTOR 0 ore x 1000 A CR ae ren EEN A NM JK F OHLG PB 57 45037 92 929 99999 99 4 1 1 GAVE 6V66T E mu SOUND AMP SOUND OUTPUT M203____ rorrension o i v203 V204 300V RADIC r H Z4 det n er TV 45014 4 A5028 c gt i can E BLUE r202 l USED OMT M M201 M202 I x gt 250V RADIO COMBINATION SETS 4 D zue fs SY TY oul 2 E e Y 150K or s 4 SE 1 E 1 E rm ES w 147 RADIO i l V SOMNF caa fe ez das aam t SWSOI PART OF E R209 gt He 4204 SHOWN 8 aT MEG ol Zb romo To 3380 TELEVISION 04 l wT a 1 POSITION PICTURE TUBE VOLIAGES 6AL5 6ACT TAKEN FROM TUBE ELE j 1303 vm DET AC VIDEO AMP SOCKET RERWED FRON TOBE
27. ohms watt in 21D1 21E1 60B 8 222 10 000 ohms 3 watt in 21D1 60B 8 103 200 ohms 1 watt 1 megohm i watt in 2151 21Cl R435 in 21B1 21C1 21H1 21J1 60B 14 822 R409 i SU E eus ge Reise AN e see 60B 8 105 12 000 ohms 1 watt in 21D1 21E1 60B 14 123 3 3 megohms i watt in 21D1 21 1 60B 8 335 R619A 2 megohms Volume r 2 6 RELOD 2 SCENE Tic EE 75B 11 12 R619 includes on off switch SW603 TPart of Diode Filter Unit 63A3 1 consisting of R707 C709 C710 Component may be part of coupiate part number 63B6 2 Order exact duplicate or individual components MODELS 16R12 26R12 25A 26A 35A 304 3 7A 26X554 564 5A 66A O7A 754 76A 39X35 36 Ch 21B1 C1 D1 H1 J1 6 9 39Vd AL TVAIWOV R701 22 000 ohms 1 2 watt 60B 8 223 R702 10 000 ohms 1 Watt o 60B 14 103 R703 150 ohms 1 2 watt 0 60B 8 151 R704 27 000 ohms 1 Watt o 60B 14 273 R705 2 200 ohms 2 Watt o ooooomm o 60B 20 222 R706 1 megohm 1 2 watt 60B 8 105 R 707 47 000 ohms 1 2 watt R708 4 7 megohms 1 2 watt 60B 8 475 R709 27 000 ohms 1 2 watt 60B 8 273 R710A 2 megohms Tone R710B 2 megobme Volume o Eege es 75B 11 12 includes SW702 R711 22 ohms watt prssdvudeu er do 60B 8 220 CONDENSERS Sym Description Part No C401 002 mtd 600 volts paper 64B 5 14 C402 005 mfd 600 volts paper
28. out slot jack T positive to chassis will allow greater signal input without distorting response curve e Connect oscilloscope between point V and chassis ground through a decoupling filter see figure 29 Keep oscillo scope leads away from chassis f Allow about 15 minutes for receiver and test equipment to warm up g When adjusting Al2 use a NON METALLIC alignment screwdriver with a inch blade h To service TV chassis with radio disconnected complete the heater circuit by connecting a jumper from pin L to pin K of Socket M503 See Schematic Instructions VIDEO CARRIER MARKER SOUND CARRIER MARKER AAT LEAST 26db OR 95 POINT DIFFERENCE IN HEIGHT OF PEAKS SHOULD NOT EXCEED 3db OR 30 o M 5D2 RADIO PRODUCTION CHANGE To improve sensitivity of the 5D2 radio the 1st IF transformers in the AM and FM stages were changed The 1st AM IF transformer T604 used in early sets part 72B97 has been replaced with part 72B97 1 The 1st FM IF transformer T601 used in early sets part 72B98 has been replaced with part 72B98 1 To accommodate this change of the IF transformers C608 has been changed from 40 mmfd part 65B1 65 to 30 mmfd part 65B1 69 R602 has been changed from 240 ohms 5 1 2 watt part 60B7 241 to 1 500 ohms 1 2 watt part 60B8 152 IMPORTANT All changes mentioned above must be made when repl
29. 01A 6SN7GT This resistor centers the operating point of the Vertical Hold control Add this resistor to both schematics This resistor has been used since the beginning of production SUPPLEMENTARY PARTS LIST This parts list contains corrections and additions to the parts list given in Preliminary Service Data for models using 21B1 21C1 5D2 Chassis Form No S336 1 Use this parts list FIRST then use the list in the Preliminary Service Data RESISTORS 3 000 ohms Vert Lin R410 for 21B1 1C1 21H1 2Z1J1 75B 13 Sym Description Part No for 2EDL 21 Ble cios n 75B 13 18 R401 22 000 ohms watte 60B 8 223 820 ohms 2 walt in sets using 654 R402 8 200 ohms Lean 60B 8 822 vert output tube V402 60B 8 821 R403 8 200 ohms Zon 60B 8 822 R411 680 ohms 2 watt in sets using 1 megohm i watt in sets using 684 6SN7GT vert output tube V402 60B amp 681 vert output tube V402 60B 8 105 680 ohms 1 watt in sets using Riog 1 5 megohm 2 watt in sets using U 6W6GT vert output tube V402 60B 14 821 6SN7GT vert output tube V402 60B 8 155 R411 was 820 ohms in early 21D1 sets using 680 000 ohms 3 watt in sets using 6W6GT tube see production changes 6W6GT vert output tube V402 60B 8 684 820 ohms 2 watt 8 200 ohms watt R415 4 in 21B1 21C1 21H1 21J1 60B 20 821 R407 in 21B1 21C1 21H1 21J1 60B 8 822 2 200
30. 25 71 Screw Tilt Out Adjusting Bracket Mtg 88 32x1 4 Bd H M 8 85 250 C2 71 Screw Tilt Out Tie Rod Mtg 6 32x1 4 Bd H M S o oo 365 250 C2 71 Spring Tilt Out Coil 2 3 8 unstretched 19A 15 1 Spring Tilt Out Arm Retaining 7 1 4 unstretched o ooo o 19A 59 Tie Rod Tilt Out eseese 28A 22 1 CABINET PARTS for 36R37 Blond 36R45 Walnut 36R46 Mahogany The above model numbers may contain the suffix N Part No Description A3060 Antenna Built in TV AB195 Antenna Built in FM 43C 129 1 Back Radio Phono and Record Compt A3224 Back TV Compt Complete 35E 123 55 Base Cabinet Legs Blond 35E 124 57 Base Cabinet Legs Walnut 35E 124 58 Base Cabinet Legs Mahogany 35E 123 3 Cabinet Blond 35E 124 1 Cabinet Walnut 35E 124 2 Cabinet Mahogany 44B 173 Carton and Fillers for 36R37 44B 172 Carton and Fillers for 36R45 36R46 98A 60 7 Caster for cabinet leg 11A 2 6 Clamp Cable 35E 123 53 Door Record Compt Complete Blond 35E 124 53 Door Record Compt Complete Walnut 35E 124 54 Door Record Compt Complete Mahog 35E 123 51 Doors TV and Radio Phono Compt Blond matched pair 35E 124 50 Doors TV and Radio Phono Compt k Walnut matched pair 35E 124 51 Doors TV and Radio Phono Compt Mahogany matched pair 35E 124 56 Door Catch and Strike Plate for Walnut and Mahogany 35E 123 59 Door Catch and Strike Pl
31. 2B C313 C314 C401 C402 C403 C404 C405 C406 C407A C407B C407C C409 C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C423 C424 C425 C426 C427 C428 C429 C430 C431 C432 C433 C601 C602 C603A C603B C603C C603D C604 C605 C606 C607 MODELS 36R37 36R45 36R46 Ch 21B1 21C1 001 mfd ceramic 65B 6 41 047 mfd 200 volts paper 64B 9 41 005 mfd Ceramie 65A 10 1 50 mmfd ceramiC 65B 6 4 047 mfd 400 volts paper 64B 9 28 01 mfd 400 volts paper 64B 5 25 20 mtd 25 V 10 mfd 25 V relectrolytic 67C 15 19 10 m d 450 V 005 mfd 600 volts paper 64B 5 12 0015 mid 0015 mia dual ceramic 4 65A 17 2 0015 mfd 0015 mia dua ceramic wn ve 65A 17 2 pen dual ceramic 4 65A 17 1 005 mfd ceramic 4 65A 10 1 120 mm d ceramic 65B 6 66 22 mfd 200 volts paper 64B 8 37 20 mfd 350 V 20 mfd 350 V electrolytic 67C 15 17 60 mfd 400 V 047 mfd 400 volts paper 64B 9 28 1 mfd 400 volts paper 64B 5 20 047 mfd 400 volts paper 64B 9 28 047 mfd 600 volts paper 64B 8 9 ee ay dual ceramic 4 65A 17 1 001 mfd Cer mice oscsiceco 65B 6 41 120 mmfd 3 mica 65B 1 10 002 mfd 600 volts paper 64B 5 14 005 mfd 600 volts paper 64B 5 12 0047 mid
32. 32D 128 Sheet Insulating mounts on cabinet in front of picture tube 37B 32 5 Slide and Track Drawer 98A 44 47 spacer Fibre Cabinet Leveler Kit of 6 78B 56 2 Speaker 12 inch PM Speed Nut 2B 12 4 68 for mounting radio escutcheon 2B 10 8 59 for mounting speaker 18A 45 Spring Clip for mtg 23E62 1 pic window Spring Escutcheon Door 18A 11 flat bronze spring used with 23D60 3 escutcheon for left or right hinge coil wire spring used with 23D60 6 escutcheon 19A 65 2 for left hinge facing front 19A 65 1 for right hinge facing front 18A 46 Spring Slide Tension 18A 43 1 Spring pig gien Tension for Tuning knob 18A 43 2 H for Off Volume knob 18A 43 3 Ke 9 m for Channel knob 33A 57 2 Trim Picture Window used with 23E62 picture window only 5A 4 14 Washer Felt used behind Channel knob 5A 4 15 used behind Picture knob 5A 4 11 d used behind radio tuning knobs Window Picture 23E 62 with round holes for mtg with screws 23E 62 1 with oblong holes for mtg with springclips CABINET PARTS for 26R25A 26R26A 26R35A 26R36A 26R37A This parts list applies only to models having the suffix letters A or AN and does not apply to models with the suffix N only or without any suffix letter A3337 Back Cabinet Complete 35E 126 1 Cabinet Wood 26R25A Walnut 35E 126 2 t 26R26A Mahogany 35E 125 1 26R35A Walnut 35E 125 2 n Z6R36A Mahogany 35k 125 3 26R37A Blond 44B 175 Carton and
33. 3C1 RADIO AM ONLY Combination models 39X35 39X36 use the 3C1 radio AM only See schematic The radio receives its operating voltage from the TV chassis The radio can be operated separately from the television chassis by using the 2PA1 power supply as instructed in Preliminary Service Data Form No S336 1 PRODUCTION CHANGES AND SERVICE NOTES RUN 4 in 21C1 CHASSIS and RUN 1 in 21B1 CHASSIS Adjacent Lower Channel Sound Trap L307 and C314 Added Later production sets have an Adjacent Lower Channel Sound Trap added between the connector lug terminal of C113 on the TV tuner and pin 1 of this 1st IF amplifier tube V301 6AU6 The trap part number 72A102 consisting of L307 and C314 is pre tuned at 27 25 MC This trap will eliminate the herringbone interference pattern produced by the sound carrier of the adja cent lower channel Close examination of this type of interference will reveal that the fine lines of the her ringbone pattern will vary in accordance with the speech or music on the adjacent lower channel Since FM interference from other sources will also produce a herringbone pattern the presence of inter ference from a station on the adjacent lower channel should be definitely determined before deciding that the trap is required This can be checked by quickly turning the channel selector to the adjacent lower channel After installing the trap realign slug A4 mixer plate coil L105 as instructed under IF Amplifier Al
34. 4 R623 22 ohms 1 2 Watt 60B 8 220 R627 1 000 ohms 1 Watt 60B 14 102 CONDENSERS Sym Description Part No C101 5 mmfd 5 mmfd Zero temp egent aa ap enii S 98A 45 22 C102 5 to 3 mm d ceramic trimmer 98A 45 87 C103 001 m d min ceramic 98A 45 24 C104 5to3 mm d ceramic trimmer 98A 45 23 C105 120 mmfd 5 ceramic 750 temp coeft 98A 45 25 C106 100 mmfd ceramic 750 temp c 6 u4 55 426 A s meite 98A 45 26 C107 5to3 mmfd ceramic trimmer 98A 45 23 C108 20 mmfd Cer Zero temp coeff 98A 45 27 C109 10 mm d 5 ceramic 750 temp coeff 98A 45 79 C110 5to3 mm d ceramic trimmer 98A 45 23 C111 3 to 5 mmfd fine tuning rotor 98A 45 92 C112 10 mmfd 5 ceramic Zero temp coeff 98A 45 64 C113 120 mmfd 10 silver mica 98A 45 78 C114 001 mfd min ceramic 98A 45 24 C115 001 mfd min ceramic 98A 45 24 C201 6 8 mm d 00033 temp coeff 65B 6 71 C202 20 mm d 5 ceramic LEA en 65B 6 51 C203 005 mfd ceramiC 65A 10 1 C204 180 mmfd 5 00003 temp GOE E a a e EE ENEE eni E 65B 6 59 C205 500 mmfd ceramiC 65B 6 6 C206 4mfd 50 V electrolytic 67A 4 9 C207 C208 C209 C210 C211 C212 C213A C213B C213C C214 C301A C301B C302A C302B C303A C303B C304 C305 C306 C307A C307B C307C C308 C309 C310 C311 C312A C31
35. 6OID SW6OIB 1301 1302 3 4 GAUG 6AL5 SOUND IF RATIO DET c208 041 MV me M r7 R309 d TURRET SWITCH SETTING SELECTS PAIR OF I T uni COILS LIOI A LIO2 FOR CHANNEL E VOLUME ALL TUNER VOLTAGES EXCEPT POINT W ARE 6465 6BC5 OR ECB CH MEASURED WITH TUBES REMOVED FROM SOCKET LI AD SX 6J6 Ai 1 po ei PIN 2 OF 6405 IS CONNECTED INTERNALLY 10 PW T 4 15 WOT GROUNDED SH yt 6AU6m6ACS GAUGoGAGS Su o GACS 18 L103 IST IF 2N0 IF 3R0 IF 1303 WD yp ac v301 v302 v303 Ba H l n E 1 L siy i PT 7 l 120 T36i ap 52 SIS 190 ie nl 1 Z SMC gy E qa e Is 4 6 2 1 la BUILT IN ANTENNA 2 6 2 E 7 3 3 T n ou zi 4 g Si 20 R301 R305 2h d m 1 IOR i R311 16 5 om oan c3024 150 ie l 42 c A3 ui ih Ai cno 5 TUNING 0015 0015 0015 0015 560K l s qued cue c3o3a c304 d E R302 8307 mu C004 ap HD f ao 7 1000 T 1000 1000 1000 6SNTCT RED R303 VERT OUTPUT R304 TO 1401 v402 000 aw Le haa T ug WHITE T Wir 1000 ha MA OP ch Al Pt ne a b 20V s VERT 4 4c Y B P sd n HOR JJ J HOR C4OTA Rail pe 00Mf0 VERT LIM 680 sut R408 12AU7 2 5 1 2 6SNTGT SYNC SEP al 1 26SNTCT 6AL5 nes VERT OSC amp CLIPPER R420 SYNC INV SYNC DISC 3 Zug vao 4 V404 Jer 2200 Age WI M16 HI 2 2MEC VERT HOLD R408 MEICHT 2 5ME6 s 820 TO ENO TERMINAL OF R446 TO
36. CENTER TAP OF 1402 10 CENTER TERMINAL 9j OF RM6 Co 1501 TO TO PRIMARY Hu C4018 SOCKET M403 SOCKET M405 BOTTOM VIEW BOTTOM VIEW PLUG M406 PIN VIEW _ BROWNS TU A0 YELLOW a T403A VERT DEF colt 48 5 TOTAL COILS ONLY 1404 SA FOCUS COIL BLACK 897 OJohn F Rider on Chassis 5D2 radio circuit also shown GAUG 5 1ST AUDIO D v605 Uv rwn 95V AN 6AL5 FM RATIO DETECTOR v604 J5V FN 105V AW 0632 CHASSIS 21B1 2101 21H 21J1 Radio Ch 5D2 veo5 v603 o st eH ei LX FRONT PIN VIEW OF PLUG W608 REAR INSIDE CHASSIS VIEW OF SOCKET W503 005 SW6OlA M60 M602 M605 neos 3602 PHONO INPUT 6AV6 SOUND AMP v203 6V6cT SOUND OUTPUT V204 JOY RADIO 2604 IY 3 2504 RADIO HS TV gt C24 CIRCUIT ABOVE BROKEN LINE DOES NOT APPLY TG TELEVISION ONLY MODELS R50CA 4 R5028 USED OLY IN COMBINATION SETS SISONPART OF ACE SHOWN IN TELEVISION OW POSITION x YELLOW LSV T M T501 VERT PICTURE TUBE WOLTAGES KH AN wie X BACT TAKEN FROM TUBE SOCKET sac SVAG hg v304 SOS SOCKET REMOVED FROM THE sues segs EIEN E B 16RP4 16TP4 19AP4 CAD USED IN CONBI NATION MODELS O
37. E 132 56 26X 15A Walnut 35E 132 57 f 26X76A Mahogany 44B 182 Carton and Fillers for 26X55A 26X56A 26X57A 44B 184 n for 26X65A 26X66A 26X67A 44B 185 H for 26X75A 26X76A 98A 60 7 Caster for Cabinet Leg 35E 131 50 Doors Matched Pair 26X65A Walnut 35E 131 51 26X66A Mahogany 35E 131 52 26X67A Blond 35E 132 50 26X75A Walnut 35E 132 51 26X76A Mahogany Door Catch and Strike Plate 35E 131 58 for 26X65A Walnut 26X66A Mahogany 35E 131 59 for 26X67A Blond 35E 132 55 for 26X75A Walnut 26X76A Mahogany Escutcheon Control less door 23D 60 3 with I shaped slot for flat door spring 23D 60 6 with U shaped slot for coil door spring Escutcheon Door 23D 60 2 used with 23D60 3 escutcheon mounts with flat door spring 23D 60 7 used with 23D60 6 escutcheon mounts with coil door spring 12A 32 6 Gasket Sponge Rubber 40 long used with picture window 36A 7 11 Grille Metal for 26X65A Walnut 26X66A Mahog 26X67A Blond Grille Cloth 36B 3 49 for 26X55A Walnut 26X56A Mahogany 36B 3 50 for 26X57A Blond 36B 3 47 for 26X65A Walnut 26X66A Mahogany 36B 3 48 for 26X67A Blond 36B 3 41 for 26X75A Walnut 26X76A Mahogany Grounding Clip includes 30 braided wire A3229 for grounding 23D61 picture window A3232 for grounding 23D61 1 picture window Handle Door 37A 30 1 pair for 26X65A Walnut 26X66A Mahog 26X67A Blond
38. Fillers for 26R25A 26RZ6A 44B 174 Hu n Ww for 26R35A 26R36A 26R37A 98A 60 7 Caster for Cabinet Leg 36E 126 50 Doors Matched Pair 26R25A Walnut 36E 126 51 263226A Mahogany 35E 125 50 n 26335A Walnut 35E 125 51 26836A Mahogany 35E 125 52 26n37A Blond Door Catch and Strike Plate 35E 126 56 for 26R25A Walnut 26R26A Mahogany 35E 125 56 for 26R35A Walnut 26R36A Mahogany 26R37A Blond Escutcheon Control less door 23D 60 1 with I shaped slot for flat door spring 23D 60 5 with U shaped slot for coil door spring Escutcheon Door 23D 60 4 used with 23D60 1 escutcheon mounts with flat door spring 23D 60 8 used with 23D60 5 escutcheon mounts with coil door spring 98A 61 8 Gasket Sponge Rubber includes chipboard back for picture window Grille Cloth 36B 3 41 for 26R25A Walnut 26R26A Mahogany 36B 3 33 for 26R35A Walnut 26R36A Mahogany 36B 3 34 for 26R37A Blond Handle Door 37A 34 pair for 26R25A Walnut 26R26A Mahogany 37A 30 pair for 26R35A Walnut 26R36A Mahogany 26R37A Blond Hinge Knife 35E 126 53 pair for Z6R25A Walnut 26226A Mahogany 35E 125 53 pair for 26R35A Walnut 26R36A Mahogany 35E 125 54 pair for 26R37A Blond 33C 53 9 Knob Television Channel 33C 53 10 u Tuning 33C 53 11 Ve e Off Volume 33C 53 12 D Picture 89A 22 1 Line Cord and Interlock Socket Screw 1A 7 9 57 for mtg escutcheon 4x3 8 RH WS 1A 6 23 71 for mtg picture
39. I Zeg 60B 7 103 R310 1 000 ohms 1 2 watt 60B 8 102 R311 150 ohms 1 2 watt 60B 8 151 metalized resistor only John F Rider PRODUCTION CHANGES D 60B8 473 This change resulted in improved audio response on radio operation RUN 3 in 21C1 CHASSIS Condenser C433 002 mfd 600 volts part 64B5 14 was added across width control L402 to increase sweep width INTERFERENCE TRAP ADDED Later production sets have an Adjacent Channel Interference Trap added between the connector lug terminal of C113 on the TV tuner and pin 1 of lst video IF amplifier V301 6AU6 This trap consists of L307 and C314 it has part number 72A102 IMPORTANT This preliminary service data contains the complete electrical parts list for models using the 21B1 21C1 television chassis and for the 5D2 AM FM radio chassis It also includes cabinet parts for models 36R37 36R45 36R46 It contains alignment data for the television chassis This TV chassis uses a 16 rectangular picture tube It uses an improved intercarrier sound system adjacent channel trap and improved sound take off and Automatic Gain Control circuits which are similar to the 20X1 20Y1 20Z1 chassis Sweep circuits are similar to 24D1 24E1 24F1 24G1 24H1 chassis Model RC500 or Model RC550 record changer is used 2181 21Cl 5D2 CHASSIS PARTS R312 1 000 ohms 1 2 watt 60B 8 102 R313 560 000 ohms 1 2 watt 60B 8 564 R314 680
40. NG control at center of its range by rotating it approximately half way d Remove the CHANNEL and TUNING knobs Insert a 14 blade NON METALLIC screwdriver in the 14 hole to the right of the channel tuning shaft For each channel in operation carefully ad just the oscillator slug for clearest picture detail Then check sound and if necessary readjust for mini mum buzz Only slight rotation of the slug will be required turning the slug in too far will cause the slug to fall into the coil If an oscillator slug should fall into the channel coil remove the coil move the slug retaining spring aside lightly tap the open end of the coil against a solid object until the slug slips out Replace slug and set the slug retaining spring into its cut out slot OSCILLATOR TUNING SLUG ADJUSTMENT ADJUST THE ION TRAP In order to prolong the life of the picture tube it is important that this adjustment be made on every receiver upon installation or servicing These sets use a 16TP4 or 16RP4 picture tube If the set has the 16TP4 tube locate the ion trap on the neck of the tube with the blue sleeve on top and the magnet to the left facing rear of chassis With the 16RP4 tube locate the blue sleeve to the left and the magnet at the bottom Starting from a point clo
41. NLY 6 INTERLOCK OK 100K 100K A E BRICHTRESS mac LA connection 14 3k TELEVISION ONLY SETS p I MAN E O SA OT Ee O Oz gt eko x O vios O HY RECTIFIER Gier Oyo O VW vam LER Fi 1404 I OO Quos GT 6BQ066T sitios o o HOR OUTPUT SHELL E oz 9 om oc o 328 8 306 ei e BLACK Oz 0 c 6WAGT BL wem vew oF Loa vw 500 V401 SCCKET L305 3 v408 Jan Q 103 001 1 T i 8 eni Zeien SEE CIRCUIT bu O m o z a d AT RIGHT I a Sh D DEE mu o jg SETS E vaos lios Le VIO SI l ko 3 3 i CIS 001 woth HIE FOCUS COIL v304 CONTR L L404 mu c RED LE YELLOW O ORIS so I Veo cr Oo C401C UA A L403 WOR LIN TO SW50 ON OFF SWITCH w 0 PINS OF V408 5 FOCUS COIL AND DEFLECTION YOKE i CONNECTORS USED IN 19 SETS case Lan weg LOFO FOCUS IM ZU CHASSIS ONLY SOCKET m504 503 k OF 4 6v6 L V204 M505 Mu 6 JV 4C JEWEL LIGHT M506 5w502 PHONO LIGHT SWITCH M507 HEN PHONO COMP T LIGHT TVMIWQV 2i 9 39Vd AL TURRET SWITCH SETTING SELECTS PAIR OF DI 1102 FOR CHANBEL DESIRED a 6A65 68C5 o D RF AMP viol e ev Wu 18 ANTEA Schematic for 21D1 Televisi T303 T301 T302 GAUG GALS SOUND IF RATIO DET RoT EN 8 v202 D V R309 ALL TUER VOLTAGES EXCEPT POINT W ARE MEASURED WITH TUBES REMOVED FROM SOCKET DI 0 a PIM 2 OF 6465 1S CORMECTED INTERNALLY TO PIM 7
42. Na gt 6AU6 ame T sas 1201 saue Ss NN Pol eo RATIO DET V202 Pal V201 SOUND KS de WO 4 A6 AS UNDERSIDE 4 5MC MAX 4 5MC MAX OF CHASSIS J 2 W l s Y Z Figure 30 Top View of Chassis Showing Alignment Adjustment Locations 4 5 MC SOUND IF ALIGNMENT Disconnect antenna and connect a wire jumper across e Use a NON METALLIC alignment tool If Ratio Det antenna terminals Transformer T201 has hollow core slugs bottom slug ad justment A7 can be made from top of chassis if you use Set Picture control fully to the right clockwise alignment tool 98A30 7 obtainable from Admiral Dis tributor Bottom slug A7 can be reached through the hole in the core of the upper slug A5 To service TV chassis with radio disconnected complete Allow about 15 minutes for receiver and test equipment to the heater circuit by connecting a jumper from pin L warm up to pin K of socket M503 See schematic Signal Gen VTVM Freq MC Connections Connect signal generator high side to point V through a 01 m d condenser Since the transmitted video and sound carriers have an accurate 4 5 MC frequency difference a TV station signal may be used instead of a signal generator for alignment of steps below When using a television signal it may be necessary to use a higher scale on the VTVM IMPORTANT When using a signal generator be sure to check it against a crystal calibrator or other fre quency standard fo
43. acing early IF transformers with late IF transformers MODELS 36837 36RL5 36Hj6 Ch 21B1 2101 4 9 39Vd AL TIVIAIWOV Form No S336 1 Additions to the preliminary service data already published on 21B1 21C1 5D2 chassis 2 Circuit information on 21D1 21H1 21J1 television chassis and 3C1 radio chassis 3 Revised instructions on Horizontal Drive and Horizontal Linearity adjustments 4 Cabinet parts for models 16R12 26R12 26X55A to 26X75A 26R25A to 26R37A and 39X35 39X36 21D1 21H1 and 21J1 CHASSIS The 21B1 and 21C1 chassis use a 16 rectangular picture tube The 21D1 chassis use a 16 round pic ture tube The 21H1 and 21J1 chassis use a 19 round picture tube which is mounted separately from the chassis The 21B1 21C1 chassis 16 rectangular tube and the 21H1 21J1 chassis 19 round tube are the same electrically except for some differences in the deflection yoke See the schematic and the schematic inset for the deflection circuit used in 19 sets The 21D1 16 round chassis differs in that the vertical and horizontal output circuits have differences in some component values in the tube complement and in B distribution The vertical output tube is a 6W6GT in the 21D1 chassis the horizontal output tube is a 6CD6GT Since there are differences in the horizontal output circuit of the 16 round sets adjustment of the horizontal drive will be different See the discussion on the following pages
44. and Metal Tube for mtg 16 round tube 28A 40 1 Band Plastic Insulating for mounting 16 round tube e A 59 1 Bracket Picture Tube Mounting supports front of rectangular picture tube Right side facing tube 15B 615 1 Left side facing tube 15B 615 2 Bracket Picture Tube Mounting supports front of 16 round tube 15 576 Bracket Top and Bottom for mounting picture tube and focus coil for rectangular picture tubes TOD EE E ABARCAR 15C 613 BottoM o oooooooooooromooooro 15C 614 for 16 round tubes WEE e so olestie 6626 Boltom A EELER EN AREE BOM 15C 627 Clamp Picture Tube Front Mtg Bracket for mtg rectangular picture tube 15A 616 Clamp Webbing for mtg rectangular tube 15A 526 Clip Tube Cap for 6CD6G ube 88A 16 6 for 6BQ6GT Iube eese n 88A 16 8 for 1B3GT ube S 19A 54 Connector Lead 2nd Anode with plug for 16 rectangular tube 88A 16 7 with contact spring for 16 round tube A3171 with female plug for 19 round tube 88A 25 1 with male plug and contact spring for 19 round tube seiere A ec uec SEH Ion Trap for round picture tubes o 94A 15 2 for rectangular picture tubes 94A 15 1 Nut Tube Band Mounting 8 32 eo 2A 1 15 71 Pilot Light 47 a AER 81A 1 8 Rubber Channel 1 long for rectangular picture tube bracket 12A 9
45. anger model number is on the top rear of the changer pan and also on the changer model label on the underside of the changer For the RC500 changer refer to Service Manual No S298 for the RC550 chang er refer to Service Manual No 327 Sym Description Part No M602 Cable Shielded includes plug 412A 11 2 M603 Cartridge Push in Needle Type includes needle 409A 13 1 Cartridge Knurled Nut Retaining Type includes needle 409A 13 M604 Motor 3 speed nr OT 19 M605 Plug Motor Male 88A 8 1 Adapter 45 RPM envelope of 12 48A 8 1 Belt Rubber Drive iocos css 406A 20 Idler Wheel Assembly includes tire G400A 279 Manual Service for RC500 Changer oo Tissot R 298 for RC550 changer coocomromomm o 327 Needle Phonograph for 409A 13 cartridge vous 98A 15 19 for 409A 13 1 cartridge 98A 15 18 Needle Retaining Nut for 409A13 CARIBE dreien Sege gl 98A 54 2 Spring Changer Float ETE 405A 139 Touch Up Paint Coppertone oooooomooo dani 98A 54 3 Gold Hammertone aspel 98A 54 12 PARTS for TILT OUT MECHANISM Description Part No Eye Bolt for tilt out spring 1A 87 1 Grommet Rubber for tilt out spring 12A 1 1 Hinge Assembly Tilt Out Left side facing front ABR AC183 1 Right side facing front AC183 2 Screw Tilt Out Brkt Shipping 10 24x3 8 1A 51
46. ate for Blond 23D 60 4 Escutcheon Control Plastic less door 23D 60 1 Escutcheon Door Plastic 23D 63 1 Escutcheon Radio 98A 61 8 Gasket Sponge Rubber includes chipboard back for picture window 36B 16 1 Grille Metal for Blond 36B 13 Grille Metal for Walnut and Mahogany 36B 13 1 Grille Rosette for 36B13 grille 36B 3 20 Grille Cloth 2 pieces for Blond 36B 3 27 Grille Cloth 2 pieces for Walnut amp Mahog 37A 23 1 Handle Door for upper doors for Blond 37A 25 1 Handle Door for upper doors for Walnut and Mahogany 33A 41 2 Handle Door for blond record compt door 35E 123 57 Hinge Knife Pair for Blond 35E 124 55 Hinge Knife Pair for Walnut Mahog 82A 10 8 Jewel Pilot Light Green 33D 55 1 Knob Radio PH AM FM Tuning 33D 55 4 Knob Radio Off Volume 33D 55 5 Knob Radio Tone 33C 53 9 Knob TV Channel 33C 53 10 Knob TV Tuning 33C 53 11 Knob TV Off Volume 33C 53 12 Knob TV Picture 81A 1 8 Light Pilot 47 89A 22 1 Line Cord and Interlock Socket 6A 4 6 0 Line Cord Mounting Rivet 1A 7 23 71 Screw for mtg picture window 6x3 8 R H W S 1A 7 9 57 Screw for mtg control escutcheon 44x3 8 R H W S 1A 7 24 71 Screw for mtg cabinet back 6x1 2 R H W S 1A 67 43 71 Screw for mtg TV chassis 1 4 20x1 98A 44 47 Spacer Fibre Cabinet Leveler Kit of 6 78B 56 2 Speaker 12 inch PM 2B 10 24 59 Speed Nut for mtg radio escutcheon 18A 45 Spring Clip
47. back end of the high voltage compartment CHASSIS NOTES Chassis used in the straight TV and combination models differ in that the combination models have con nectors for supplying power to the radio and the cabinet pilot light To service the television chassis in combination models with the radio disconnected it will be necessary to com plete the heater circuit by connecting a wire jumper from pin L to pin K See plug and socket drawing on schematic Since the radio receives its power from the television chassis it cannot be operated without the television chassis Important If both the radio and television are turned on at the same time neither unit will operate PICTURE TUBE HANDLING PRECAUTION Due to the high vacuum and large surface area of picture tubes great care must be exercised when han dling these tubes Shatterproof goggles and heavy gloves should be worn while handling or installing a picture tube The picture tube must not be scratched or sub jected to excessive pressure as fracture of the glass will result in an explosion of considerable violence which may cause personal injury or property damage HIGH VOLTAGE WARNING High voltages are present throughout this receiver Operation with cabinet removed involves shock hazard Exercise normal high voltage precautions while working with this set Tustalling the Television Receiver After the antenna is set properly make all checks or adjustments given
48. btained against the ideal curve shown below If shape of curve is not within limits shown it will be necessary to repeat the IF Amplifier Alignment The IFs must be accurately aligned before correct oscil Check need for oscillator alignment by comparing the response curve ob tained for each channel operating in the service area with the Overall RF and IF Response Curve shown below With correct oscillator alignment the video and sound markers should locate at the points shown on the re sponse curve The Tuning control must be at half rotation see figure 32 when making this check If a major number of channels are far off in the same direction make the overall oscillator adjustment All Touch up of individual channel slugs A12 may also be required If only individual channel adjustment is required adjust the proper channel Make all oscillator adjustments so that the video and sound marker pips ap pear at the proper points on the response curve Important Before making oscillator adjustments be sure that the Tuning control is set at half rotation see figure 32 Only slight rotation of the slug A12 will be required turning the slug in too far will cause the slug to fall into the coil If an oscillator slug should fall into a coil remove the coil move the slug retaining spring aside lightly tap the open end of the coil against a solid object until the slug slips out Replace slug and set the slug retaining spring into its cut
49. changed from 002 mfd to 0047 mfd 600 volts part number 64B9 15 Some sets having this change use a single 0047 mfd condenser other sets use two 002 mfd condenser in parallel This change was made to increase sweep width Condenser C433 is 002 mfd in later sets using an improved horizontal output transformer R411 in 21D1 CHASSIS CHANGED to INCREASE RANGE of VERTICAL LINEARITY CONTROL R410 Resistor R411 was changed from 820 ohms 1 watt to 680 ohms 1 watt part number 60B14 681 This change was made to increase the range of the VERT LIN control R410 ALTERNATE VERTICAL OUTPUT TUBE V402 in 21B1 21C1 21H1 and 21J1 CHASSIS Some sets with 16 rectangular or 19 round picture tube may use a 6SN7GT tube as an alternate for the 6S4 vertical output tube V402 The schematic shows the circuit used with the 6S4 tube the schematic inset shows the circuit used with the 6SN7GT tube ALTERNATE IF TUBE V301 V302 V303 Some sets may use a 6AG5 tube as an alternate for the 6AU6 tube in the 3rd IF stage V303 other sets may use a 6AG5 tube for the Ist 2nd and 3rd IF stages V301 V302 and V303 When the 6AG5 tube is used tube socket terminal 2 is unused not grounded as pins 2 and of this tube are connected internally A tube shield is used in the 1st and 3rd IF stages with the 6AG5 tube ALTERNATE TUBE USED IN 3C1 RADIO Early sets used a 6AV6 tube for V703 Det AVC AF A few of these early sets used the 6AT6 tube Late
50. cludes C701 C702 69C 121 2 Oscillator Coil sss wesss EA A NEEN NR 69A 52 1 Audio Output Transformer for TV only Sets sisse er dic 79C 33 1 for combination sets 79C 33 2 Vertical Output Transformer for 21B1 21C1 2 H1 21J1 79B 29 1 fob 21D1 21El1 e ci rtm 9B 34 1 Deflection Yoke includes R412 R413 R445 C430 for 16 rectangular tube A3222 for 16 round tube A3178 for 19 round tube asias Ken A3197 includes connector plug Horizontal Output Transformer includes tube cap clips for 21B1 21C1 21H1 21J1 79C 30 2 for 21D1 21E1 790 30 3 1st IF Transformer 72B 28 7 2nd IF Transformer 72B 28 17 John F Rider MISCELLANEOUS PARTS for TV CHASSIS Picture tube mounting parts listed below are for 16 tubes See separate heading for 19 tube mounting parts Sym Description Part No M203 Speaker Lu 2 Dm 78B 59 1 OPM 78B 49 1 1O DM siria ALIAS 78B 47 2 12 pM AAA 5 050 78B 56 2 M403 Socket Focus Coil 5 contact wafer 87A 4 4 M404 Plug Focus Coil 5 pin 88A 3 5 Cover amp Insulator for 88A3 5 plug 88A 3 4 M405 Socket Deflection Yoke 6 contact molded 87A 30 2 M406 Plug Deflection Yoke 6 pin 88A 9 1 Cover amp Insulator for 8849 1 plug 88A 17 M504 Socket Light 4 contact wafer used only in 19 combination sets 87A 6 3 B
51. d complete the heater circuit by connecting a jumper from pin L to pin K of socket M503 See schematic Marker Gen Freq MC Instructions Check for curve resembling RF Response Curve shown below If necessary adjust A8 A9 and A10 Figure 30 as required Consistent with proper band width and correct marker location response curve should have maximum amplitude and flat top appearance Sweeping Channel 12 Check each channel operating in the service area for curve resembling RF Response Curve shown below When checking any channel set the sweep and marker generators for the proper frequencies as indicated in the table below In general the adjustment performed in step 1 is sufficient to give satisfactory response curves on all channels However if reasonable alignment is not ob tained on a particular channel a check to see that coils have not been inter mixed or b try replacing the pair of coils for that particular channel or c repeat step 1 for the weak channel as a compromise adjustment to favor this particular channel If a compromise adjustment is made other channels operating in the service area should be checked to make certain that they have not been appreciably affected See table below Video Carrier Frequency MC Sound Carrier Frequency MC Video Carrier Sound Carrier MC 59 75 65 75 71 75 81 75 87 75 179 75 185 75 191 75 197 75 203 75 209 75 215 75 Chann
52. el Channel Number Freq MC 54 60 60 66 66 72 873 55 25 61 25 67 25 77 25 83 25 175 25 181 25 187 25 193 25 199 25 205 25 211 25 DIP SHOULD NOT EXCEED 3db OR 30 OF TOTAL pe 4 586 WEIGHT E MARKER VIDEO e Full skirt of curve will not be visible unless generator sweep width extends beyond 10 MC MARKER SOUND CARRIER 210 216 Figure 31 RF Response Curve see Oscilloscope Note below 874 OVERALL OSC j 6J6 TUBE SHIELD ADJUSTMENT OSCILLOSCOPE NOTE In dealing with RF and IF response curves it is well to remember that an inverted or mirror image may re sult depending on the sweep generator and oscilloscope used The general waveform should still be identical When using a wide band oscilloscope for alignment marker pips will be more distinct if condenser from 100 to 1 000 mmfd is connected across the oscilloscope input Caution Use the lowest capacity condenser possible since too high a capacity will affect the shape of the response curve SLUG ADJUSTMENT TURRET POSITIONED TO ADJUST CHANNEL 6 TUNING ROTOR gt i DAT 2 FLAT OF SELECTOR SHAFT AT HALF ROTATION FACING COIL FOR CHANNEL 3 Fig 32 Front View of Tuner John F Rider a Disconnect antenna b Disconnect signal generator and VTVM if used earlier c Set the Tuning control at half rotation by rotating it approximately 150 as shown in figure 32 Set Picture
53. gs l and 6 3 Connect an 18 000 ohm 1 2 watt resistor part number 60B8 183 between lugs and 6 ll Connect a 110 uufd condenser part number 65B1 26 with a 270K 1 2 watt resistor part number 0B8 2714 in parallel between lugs and 5 TO2 VERTICAL OUTPUT TRANSFORMER ADD 270K 1 2 WATT V03 12AU7 REMOVE ADD 18K 1 2 WATT ADD REPLACES R323 2 9 20vd AL TVAIWOV lt y de yeaa aa 1 WRIRATT amp 880 3 22 ATT uos em en BBAG BA S P gt 001 CONVERTER See mum A7 Ceci H UI oe FW 200 IF A Lon 509 aha Iso an We EA T60 veo air Ten SES un ls cool dr Ba Y Ln gt I 2 20 H Tito e l SM auc Ma GER GREEN DOT T 10 t602 fO T Qi D Ye Vis and 3 0 T SECTION OF 320 og LIME 6 d T i GAUG GALS SOUND IF RATIO DET mor v201 R204 v202 ATK TURRET SWITCH SETTING SELECTS PAIR OF COILS LIOI A L102 FOR CHANNEL DESIRED ALL TUNER VOLTAGES EXCEPT POINT W ARE MEASURED WITH TUBES REMOVED FROM SOCKET OS AUS GAUS GAU6 S L103 IST VIDEO IF 2ND VIDEO IF 3RO VIDEO IF aie v30 v302 v303 i 120 35 L307 T L LA ou 120 15k NOT USER IM EARLY SETS cio Tuning 53 Tom Tw IS 7 20NFD HI MIT Mis DAT SYNC SEP 4 CLIPPER V 26SNTCT 6AL5 SYNC INV c SYNC DISC 1 2 6SNTCT 654 VERT OSC VERT OUTPUT vaoiA Z7 100Y V402 mo
54. ht d Turn the HORIZ DRIVE adjustment screw to the left until a vertical line appear near the center of the raster Then turn the screw to the right just far enough to make the lines disappear If the screw is turned further than required to eliminate the vertical lines picture width and brightness may be affected Do not use the Horizontal Drive to correct width or linearity If necessary make the Width and Hori zontal Linearity adjustments HORIZONTAL LINEARITY ADJUSTMENT for 21D1 CHASSIS If the large circle in the center of the test pattern has a cramped or flattened appearance at either side non linear horizontally adjust the HORIZ LIN adjustment screw by turning it to the left or right as required Note that the Horizontal Drive and the Width adjustments also affect linearity Be sure that these adjustments are set correctly if difficulty is encountered when making the horizontal linearity adjustment If vertical lines appear in the center of the picture when making the horizontal linearity adjustment see Horizontal Drive Adjustment for 21D1 Chassis above Form No 8336 3 C433 INCREASED to OBTAIN SUFFICIENT WIDTH To obtain sufficient width C433 may be 0047 mfd 600 V part number 6488 15 in some 21D1 21H1 21J1 chassis Also some of the 21D1 chassis may use a 01 mfd 600 V condenser part number 64B8 13 GRID RESISTOR REQUIRED WHEN V303 is 6AG5 When a 6AG5 is used at V303 an 18 000 ohms Z watt resist
55. icture tube Rubber Strip Adhesive 3 16 used under webbing band Shield Tube plain type de eco eres slotted type d Socket Jewel Light Socket Shell cover for 1B3 t Socket Tube miniature bakelite 7 pin octal plain 4465 octal ringmount mica fill miniature 9 pin picture tube Socket Test 4 terminal Spring Picture Tube Groundi Tuner Television compiete Webbing Picture Tube Mtg 42 length zeen 3 558 T MISCELLANEOUS 1 for TV TUNER 94C Description Shaft Shell amp Rotor As Tuning with 4 1 1t brass shaft shell Bracket Sharp Tuning Retaining Spring Detent Plate G Shield Tube Slotted f Shield Tube Plain fo Spring Slug Retaining Washer Fibre Spacer 1 4 IDx1 2 OD Nut Locking Spring fo Screw Trimmer 4 36 Screw Bracket Mtg 6 Slug Brass Tuning Stator Plate unground Ceramic Insulator ing C111 includes m Tuner Television cor Roller Detent 3 8 d 3 32 dia bearing Spring Detent 2 5 16 Contact Plate and Brac Uses Wiping Conta Spring Sharp Tuning Flat bronze 1 7 16 Spring Front and Rea Wire 2 3 4 long 3 Turret and Shaft Asser coils 5 3 8 shaft rounded detent depre Sym M104 M107 M108 M109 M110 M112 M113 M114 M115 M116 M117 M118 M120 M121 M122 M123 M124 M125 15C 613 Sti ees RR 15C 614 t secs deer 32A 111 1 Mounting to
56. ign ment in Preliminary Service Data Form No S336 1 All 21D1 21H1 21J1 chassis have this trap RUN 5 in 21C1 CHASSIS and RUN 2 in 21B1 CHASSIS Noise Filter Added to Improve Sync Immunity to Noise In areas where the noise levelis high noise peaks may affect the horizontal or vertical sync and cause the picture to shake horizontally or lose horizontal or vertical sync A change in value of resistor R323 and an additional filter R329 and C315 have been incor porated in the sync circuit of later production chassis to reduce this trouble See schematic This circuit change began with run 2 of 21B1 chassis and run 5 of 21C1 chassis all 21D1 21H1 21J1 chassis will have this sync circuit Early production receivers may be modified by following the procedure given below l Locate the 9 lug terminal strip adjacent to vertical output transformer T402 John F Rider MODELS 16R12 26R12 25A 260A 35A 30A 37A 26X55A 56A 65A 606A O7A 75A 76A 39X35 36 Ch 21B1 C1 D1 2H1 J1 2 Remove resistor R323 8200 ohms from between lugs 4 and 6 counting 1 from end of strip near T402 Connect a 18 000 ohms 3 watt resistor part number 60B8 183 between lugs 5 and 6 4 Between lugs 4 and 5 connect a 150 mm d mica condenser part number 65B21 151 with a 270 000 ohm 3 watt resistor part number 60B8 274 in parallel RUN 2 in 21D1 CHASSIS CHANGE in 21J1 CHASSIS In some 21D1 and 21J1 chassis condenser C433 was
57. ining Meta 28A 40 2 acket Strap supports yoke coil 15A 572 acket Tube Mtg supports front of tube for right side facing tube e 15C 564 1 for left side facing tube E NO o 15C 564 2 acket Yoke upper mtg bracket 15C 628 2 acket Yoke Base lower support 15C 627 mnector Lead 2nd Anode with female plug eese 88A 25 1 with male plug and contact spring A3200 und Wire Assembly eee A3209 H d EE AR ac 94A 15 2 ver Picture Positioning AA o nn 15B 574 t 8 32 Hex for tube band 24 1 15 71 ture Tube 19 TV o o oooo sees enee 19AP4 bber Collar supports flare of picture tube 12B 40 ew Wing for deflection yoke 1A 101 1 71 m Focus Coil Mounting 32A 134 icer Sleeve 1 8 in length 29A 2 3 71 ing HV Contact at front of tube 18A 37 pe Aluminum Foil order length needed 52A 1 17 sher Spring for mtg pictore positioning lever Eed RN eegen ene 445 10 71 MISCELLANEOUS PARTS for 3C1 RADIO 701 Switch Radio Phono eur gd TTA 28 2 02 Switch On Off ceci se ocho WIEN Part of R710 01 Socket Phono Input amp sk v 88A1 06 Socket Phono Motor 89A 6 1 07 Shielded Cable Assembly 89A 29 11 08 Plug Cable Connector 14 pin rect 88A 20 1 Cover and Insulator for plug 88A20 1
58. ment brilliancy as compared with that obtained with a 1 5 volt dry cell battery MODELS 36R37 36R 45 36R46 Ch 21B1 21C1 RADIO VOLTAGE DATA Voltages given on schematic diagram Line voltage 117 volts AC Voltages measured with a vacuum tube voltmeter between tube terminals and chassis Voltages measured with band switch on FM position unless otherwise indicated an AM reading is given where difference is significant Volume control set at minimum Dial turned to low frequency end Antennas disconnected A When R602 is 240 ohms voltage on pin 1 of V601 is 152 volts pin 2 is 5 volts pin 6 is 152 volts and pin 8 is 1 9 volts When R602 is 1500 ohms voltage on pin 1 of V601 is 160 volts pin 2 is 3 volts pin 6 is 160 volts and pin 8 is 3 volts IMPROVED NOISE IMMUNITY IN THE HORIZONTAL SYNC CIRCUIT OF 21B1 AND 21C1 CHASSIS In some areas where the noise level is high the noise peaks may affect the sync sircuit and cause the picture to shake horizontally or lose horizontal sync A change in resistor value and an additional filter in the sync circuit has been incorporated in late production to reduce this trouble The circuit change began with run 2 of 21Bl chassis and run 5 of 21C1 chassis Early production receivers may be modified by following the pro cedure given below 1 Locate a 9 lug terminal strip adjacent to the vertical output transformer 2 Remove R323 8200 ohms from lu
59. mmfd max AM Osc gang 68B 24 15 mmfd max FM Osc Dial drum spotwelded to gang 01 mfd min ceramic 65A 10 3 68 mmfd Ceramic 65A 16 1 40 mmfd ceramic 000750 temp coeff 65B 6 67 001 mfd ceramiC 65B 6 41 TVAIWOV 9 39Vd AL C609 C610 C611 C612 C613 C614 C615 C616 C617 C618 C619 C620 C621 C622 C623 C624 C625 C626 C627 C628 C629 C630 C631 C632 C633 C634 C635 C636 C637 C638 C639 C641 L101 L102 L103 L104 L105 1201 L301 L302 Sym early 5D2 sets 65B 1 65 30 mmfd silver mica used in late 5D2 sets 65B 1 69 Before replacing see 5D2 pro duction change on reverse side 40 mm d silver mica used in C608 001 mid silver mica 5 Part of T604 01 mfd min ceramic 65A 10 3 01 mfd min ceramic 65A 10 3 100 mm d silver mica 5 Part of T601 300 mmfd silver mica 5 Part of T604 01 mfd min ceramic 65A 10 3 01 mid min ceramiC 65A 10 3 01 mfd min ceramic 65A 10 3 250 mmfd ceramic AAA 65B 6 5 200 mm d silver mica 5 Part of T605 100 mmfd silver mica 5 Part of T602 200 mmfd silver mica 5 Part of T605 01 mfd min ceramic 65A 10 3 01 mfd min ceramiC 65A 10 3 s ia Y dual ceramic 63A 7 1 If a section of this dual conde
60. n and component values affect IF re sponse These differences are not apparent in alignment of IFs when using a signal generator and VTVM single frequency alignment hence it is preferable that an IF response curve check be made after completion of the IF amplifier alignment The IF response curve check can be made as indicated di rectly below However also note that a better check can be made by feeding the sweep signal through the entire RF and IF system as given under Overall RF and IF Response Curve Check Step 1 The overall check should be made after making all other alignments a Make all control settings and connections as given in the IF amplifier alignment chart see a through f above b Connect oscilloscope between point V and chassis ground through a decoupling filter see fig 29 Keep leads away from receiver c Connect sweep generator high side to tube shield of 6J6 V102 osc mixer tube Be sure to insulate tube shield from chassis Connect sweep generator common to chassis close to 6J6 tube base Set sweep generator to sweep the IF band pass 19 to 29 MC d Loosely couple marker generator high side to the sweep gen erator lead connected to tube shield on tuner common to chassis ground To avoid distortion of the response curve keep the sweep generator and marker generator outputs at a very minimum Marker pips should be just kept barely visible To minimize distortion set sweep generat
61. nser becomes defective replace with exact duplicate or two condensers of the same value with a tolerance within 10 of each other 4 m d 150 volts electrolytic 67A 4 2 001 mfd min ceramiC 65B 6 41 01 mfd min ceramic 65A 10 3 100 mmfd ceramic 000750 temp coeff 65B 6 68 001 mfd ceramic ern 65B 6 41 01 mfd min ceramic 65A 10 3 1 mfd 400 volts paper 64B 1 20 005 mfd min ceramic 65A 10 1 5 mm d CeramiC oo o 65B 6 61 2 5 to 6 mmfd ceramic trimmer 66A 28 1 90 mmfd silver mica 3 Part of T603 004 mfd min 004 mid min dual ceramic 65A 17 1 01 mid min Ceramic 65A 10 3 01 mfd min ceramiC 65A 10 3 1 mfd 400 volts vaoer 64B 1 20 COILS and TRANSFORMERS Description Part No Antenna Coil for Channel 42 98A 62 2 for Channel 83 ees 98A 62 3 for Channel 4 98A 62 4 for Channel Wisin 98A 62 5 for Channel 46 EEIE 98A 62 6 for Channel ous amina 98A 62 7 for Channel 48 E scares 98A 62 8 for Channel 9 ss 98A 62 9 for Channel 10 sas acere 98A 62 10 for Channel 711 98A 62 11 for Channel 12 98A 62 12 for Channel 13 98A 62 13 Mixer Oscillator Coil for Channel 2 98A 63 2 for Channel D ares weree e 5 98A 63 3 for Channel 4 52 nouas 98A 63 4 for Channel 45
62. or part number 60B8 183 is required from grid pin 1 to ground 6 SQ T 6 S N Tet V203 V403 DIFFERENT TUBE USED for SOUND AMPLIFIER V203 Some sets may use a 6SQ7 tube instead of a 6AV6 tube at V203 There are no part changes necessary with this sub Stitution The pin numbering for the 6SQ7 is shown in the adjacent illustration John F Rider JFFERENT TUBE USED for SYNC SEP and CLIPPER V403 Some sets may use a 6SN7GT tube instead of a 12AU7 tube t V403 There are no part changes necessary with this sub titution The pin numbering for the 6SN7GT is shown in the djacent illustration i ALTERNATE CIRCUIT WHEN LTERNATE CIRCUIT WHEN V402 is 6SN7GT V402 IS 6SN7GT The schematic in Form No S336 2 for the 1 2 6SNT GT 6SNTGT 1B1 21C1 21H1 21J1 television chassis VERT OSC VERT OUTPUT shows an alternate circuit for V402 when a T401 V401A v402 SN7GT tube is used in place of the 684 See EN To 1402 nset in lower left portion of schematic Cross out this schematic inset and in its SIS lace use the circuit given in the adjacent bs llustration EE R404 1 5 megohms 2 W 60B 8 155 R406 2 5 megohms 2 W 60B 8 255 VERT HOLD R405 I MEG RESISTOR ADDED in VERTICAL OSCILLATOR STAGE In sets using a 6S4 or a 6W6GT tube in the vertical output stage V402 a 150 000 ohms 1 2 watt re istor part number 60B8 154 is connected between R404 and the grid pin 1 of the vertical oscillator V4
63. or output for VTVM reading of approximately 5 volt DC measured between test jack T and chassis Connecting a 1 volt battery negative to test jack T positive to chassis will allow greater signal input without distorting the response curve e Check curve obtained against the ideal IF response curve shown in figure 28 Since it is not always possible to get ideal curves it should be noted that the height of opposite peaks should be within 3db or 30 of each other The dip or valley in the center of the curve should not be greater thar 3db or 3096 down from the highest peak of the curve Check video and sound IF carrier points by means of marker generator It is important that marker pips be in the proper location on the response curve The 25 75 MC marker should be 6db below the highest peak 5096 point on the high frequency side of the curve The 22 MC marker should be at the opposite side of the response curve located approximately 18db 85 below the highest peak The 21 25 MC marker should be located at least 26db 9596 below the highest peak and may or may not be visible Consistent with proper band width and correct location of markers the response curve should preferably have maximum amplitude symmetry and flat top appearance If the procedure given has been carefully followed and the response curve obtained differs greatly from the curve shown in figure 28 repeat the IF Amplifier Alignment making sure gen erator freq
64. r accurate frequency calibration at 4 5 MC Accuracy is required within one kilocycle Use 3 volt DC scale on VTVM a A5 and A6 for maximum keep Keep VTVM leads well sepa reducing generator output to rated from signal generator and keep VIVM at approx 1 volt chassis wiring P pprox To test jack Y Use 3 volt zero center scale on A7 for zero on VTVM the VTVM if available Keep VTVM correct zero point is located be leads well separated from signal tween a positive and a negative generator and chassis wiring maximum To test jack Z Signal may be unmodulated or 400 cycle AM modulated If A7 was far off repeat steps 1 and 2 a Disconnect 1 volt battery from test jack T if used earlier Connect a wire jumper from test jack T Fig 30 to chassis Leave connected for all steps in this alignment Disconnect antenna from receiver c Connect sweep generator to antenna terminals If sweep generator does not have a built in marker generator loosely couple a marker generator to the antenna terminals To avoid distortion of the response curve keep sweep gen RF AND MIXER ALIGNMENT erator output at a minimum marker pips just barely visible Connect oscilloscope through a 10 000 ohm resistor to test point W on tuner Fig 30 Keep scope leads away from chassis Allow about 15 minutes for receiver and test equipment to warm up To service TV chassis with radio disconnecte
65. r production sets use the 6SQ tube which is the metal tube equivalent ALTERNATE CONTROL ESCUTCHEONS Two alternate control escutcheons are used with these sets Although the escutcheons are interchange able as a complete unit individual parts for the two alternate escutcheons are not interchangeable The different escutcheons can be identified by the type of door spring used and the differences in the cutout slot which supports the ends of the door springs The parts for the control escutcheon having an I shaped slot using a flat bronze door spring are Escutcheon Control less door 23D 60 3 Escutcheon Do0r oooooooo o o 23D 60 2 Escutcheon Door Spring Flat bronze 18A 41 The parts for the control escutcheon having a U shaped slot using a coil wire door spring are Escutcheon Control less door 23D 60 6 Escutcheon Door 23D 60 7 Escutcheon Door Spring Coil wire right side facing front 19A 65 1 left side facing front 19A 65 2 REPAIRING MOUNTING LUGS on PICTURE WINDOW If only the mounting lugs are broken on picture windows 23D67 23E62 1 and 23D61 1 a metal replace ment lug can be pressed into the plastic by heating it with a soldering iron Instructions for installing Form No S340 are included with the 3 lugs supplied under part number 15A668 8 9 39Vd AL TVAIWOV PE SERVICE ADJUSTMENTS The following information on making the Horizon
66. se to the tube base very carefully move the ion trap forward or backward and at the same time rotate it slightly in either direction adjust for the brightest picture possible with the BRIGHTNESS control set for average brightness Note that there may be two locations where the bright est picture can be produced The second ion trap location which is further forward on the tube neck should not be used Important Should the corners of the picture he come rounded off or shaded after adjusting the ion trap correct this by moving the deflection yoke coil E as far forward as possible and then adjusting the picture posi tioning lever or the focus coil if necessary as described below Do not try to remove shaded corners with ad justment of the ion trap Be sure to readjust the ion trap after adjusting the picture positioning lever or re positioning the focus coil The 16TP4 picture tube uses ion trap part number 94A15 2 the 16RP4 tube uses ion trap 94A15 1 The part number is stamped on the ion trap magnet The wrong ion trap may cause shaded corners or insufficient picture brightness HORIZ ORIVE HORIZ LIN VERT HEIGHT WIDTH Chassis Views Showing Adjustment Locations E DEFLECTION YOKE COIL PICTURE POSITIONING LEVER ION TRAP BLUE SLEEVE Ch 21B1 21C1 Radio Ch MODELS 36R37 36R 5 36Rh6 1 9 239 AL TVHIWGV If the picture is tilted loosen the wing nut H on the
67. table model 78B 49 1 8 PM for console model 2B 10 26 59 Speed Nut for mtg speaker baffle in floor models Spring Escutcheon Door 18A 41 flat bronze spring used with 23D 60 1 escutcheon for left or right hinge coil wire s ring used with 23D60 5 escutcheon 19A 65 2 for left hinge facing front 19A 65 1 for right hinge facing front 18A 43 1 Spring TV Knob Tension for Tuning knob 18A 43 2 b k for Off Volume knob 18A 43 3 M e kid i for Channel knob 5A 4 14 Washer Felt used behind Channel knob 5A 4 15 b used behind Picture knob 23D 68 Window Picture CABINET PARTS for 26X55A 26X56A 26X57A 26X65A 26X66A 26X67A 26X75A 26X76A This parts list applies only to models having the suffix letters A or AN and does not apply to models with the suffix N only or without any suffix letter Part No Description A3132 Antenna Built in TV 43D 102 Backing Cardboard for 23D61 picture window 43D 116 H for 23D61 1 picture window 43C 101 3 Back Lower TV Compartment A3337 Back Television Compartment complete 35E 130 1 Cabinet Wood 26X55A Walnut 35E 130 2 26X56A Mahogany 35E 130 3 e 26X57A Blond 35E 131 1 i 26X65A Walnut 35E 131 2 26X66A Mahogany 35E 131 3 Y 26X67A Blond 35E 132 1 0 96X 75 A Walnut 35E 132 2 tf 26X 6A Mahogany 35E 131 53 Cabinet Legs 26X65A Walnut 35E 131 54 26X66A Mahogany 35E 131 55 i 26X67A Blond 35
68. tal Drive and Horizontal Linearity adjustment corrects and supercedes the information given in Installation and Service Notes for 21B1 21C1 Chassis Form No 41A9 13 HORIZONTAL DRIVE and HORIZONTAL LINEARITY ADJUSTMENT for 21B1 21C1 21H1 21J1 CHASSIS If the large circle in the center of the test pattern has a cramped or flattened appearance at one side non linear horizontally turn the HOR DRIVE adjustment screw in fully to the right then slowly turn it out while adjusting for best linearity circular shape Note that the Horizontal Drive control also affects width and brightness If horizontal non linearity can not be completely corrected with the HOR DRIVE adjustment further correction can be made by adjusting the HOR LIN control Alternate adjustment of the Horizontal Drive and Horizontal Linearity controls may be necessary to obtain best linearity HORIZONTAL DRIVE ADJUSTMENT for 21D1 CHASSIS This adjustment should be made so that the adjustment screw is as far out to the left as possible without producing vertical lines in the picture Adjust as follows a Turn the CHANNEL control to an unused channel b Set BRIGHTNESS control at a lower than average setting c Turn the HORIZONTAL control front panel completely to the left If the Horizontal control is not set at the extreme left position the vertical lines may be removed in step d but may re appear when the Horizontal control is rotated to the rig
69. tering Picture or Eliminating Shaded Corners a Loosen screws G then move the yoke support bracket forward until rubber grommet F is firmly against the flare of the picture tube OJohn F Rider SOUND c ANP GAVE OUTPUT E OSC A MIXER eus RE ANP GAGS 68C5 0R 6CB6 V VERT 854 OUTPUT ei VERT 0SC 6SN7 KR SYNC CD DAMPER IST a ON IF AMP GAUG M HI HOR SYNC DISC RATIO GAUS IF AMP a ATIO GALS DET SYNC SER SE GALS Qu AUT A CLIP NY Su IF AWE no os 6R CN Su VIDEO DET Ge ioe AMP Ee RECTIFIER 1 4 AMP 250V FUSE Top View of Chassis 18361 8016 e Antenna disconnected from set with terminals shorted e Under operating conditions AGC Automatic Gain Control voltage developed at pin 1 of V301 6AU6 should measure approximately 3 volts This voltage depends on picture signal strength and Picture control setting CAUTION Pulsed high voltages are present on the cap of the 6BQ6GT tube and on the filament terminals and cap of the 1B3GT tube NO ATTEMPT SHOULD BE MADE TO TAKE MEASURE MENTS FROM THESE POINTS UNLESS SUITABLE TEST EQUIPMENT IS AVAILABLE Picture tube 2nd anode voltage can be measured from the 2nd anode connector and should be taken only with a high voltage instrument such as a kilovoltmeter 2nd anode voltage is ap proximately 12 5 KV Proper filament voltage check of the 1B3GT tube may be made by observing fila
70. uencies are precise and adjustments are accurately made In dealing with RF and IF response curves it is well to remember that an inverted or mirror image may result depending on the sweep generator and oscilloscope used The general waveform should still be identical When using a wide band oscilloscope for alignment marker pips will be more distinct if condenser from 100 to 1 000 mm d is connected across the oscilloscope input capacity will affect the shape of the response curve OJonn F Rider Caution Use the smallest condenser possible since too high a MODELS 36R37 36R5 36RL6 Ch 21B1 2101 ALIGNMENT HINT After becoming familiar with alignment procedure some servicemen simplify subsequent alignment of sets by merely using the essential alignment data given in figures 29 and 30 9 9 39Wd AL AL 871 NOT IN EARLY SETS WITHOUT TRAP L307 OAT LEAST 26db OR 95 25 15MC MARKER TVAIWOV A 5 18db 85 A a6db OR 50 KEE E 34b MAXIMUM 30 ri SE ipe 6 DIFFERENCE IN HEIGHT OF PEAKS GROUND TO CHASSIS _ J SCOPE SHOULD NOT EXCEED 34b OR 30 CHASSIS GROUND I 3 WEASURED FROM HIGHEST PEAK DECOUPLING FILTER SHOWN IN DOTTED LINES Figure 28 IF Response Curve Figure 29 Bottom View Showing Test Point V Al2 INDIVIDUAL CHANNEL ADJ ANOVERALL OSCILLATOR ADJ 23 ien MAX 25 F MAX MAX 25 b MAX mr V V30 S VIDEO IF F we e es 302 208 vite SO
71. ug HF Oscillator Coils IF AMPLIFIER ALIGNMENT Before starting alignment be sure IF cover shield is mounted to chassis Disconnect antenna and connect a jumper across antenna terminals Set receiver to channel 13 or other unassigned high channel to prevent signal interference during IF alignment VTVM and Signal Generator Connections Signal Gen Freq MC VTVM high side to test jack T common to chassis Connect generator high side to 6J6 V102 tube shield insulate shield from chassis Connect common to chassis near 6J6 tube base d Set Picture control fully to the right clockwise Retain this setting for all IF adjustments Allow about 15 minutes for receiver and test equipment to warm up To service TV chassis with radio disconnected complete the heater circuit by connecting a jumper from pin L to pin K of socket M503 See schematic Instructions Adjust Al and A2 for maxi mum Use VTVM 3 volt DC scale When peaking keep reducing generator output for VTVM reading of ap prox 1 volt or less A3 and A4 for maxi mum To insure correct IF alignment make the IF Response Curve Check given below or make the Overall RF and IF Response Curve Check Step 1 given later The overall check should be made after making all other alignments IF RESPONSE CURVE CHECK Using sweep generator and oscilloscope with sweep input to RF Mixer V102 Differences in tube gai
72. umber 15A668 can be pressed into the plastic by heating it with a solder ing iron Instructions for installing Form No 8340 are M with the 3 lugs furnished under part number CABINET PARTS for 39X35 Walnut 39X36 Mahogany The above model numbers may contain the suffix N A3023 Antenna Built in Roto Scope TV 43C 108 2 Back for Album Compartment 43C 114 2 ti for Cabinet below TV compartment 43C 107 2 KW for Record Changer Compartment A3193 H for Television Compartment Complete 43D 105 Backing Cardboard for 23E 62 pic window 43D 119 n for 23E 62 1 pic window Bracket Slide to Pan Mtg 15C 620 3 Left side facing front of cabinet 15C 620 4 Right side facing front of cabinet 15A 624 Bracket Changer Stop 35E 136 1 Cabinet Walnut 35E 136 2 ke Mahogany Carton and Fillers 98A 60 7 Caster for cabinet leg 11B 12 6 Clamp plastic for cable Decal Cabinet Door Refinishing 35E 136 60 for pair of doors Walnut 35E 136 61 for pair of doors Mahogany 98A 11 3 Decal Cement 1 pint 35E 136 53 Door Record Compt Complete Walnut 35E 136 54 Nu Complete Mahog Doors TV and Radio Phono Compt 35E 136 50 matched pair for Walnut 35E 136 51 matched pair for Mahogany 35E 136 63 Door Catch and Strike Plate 37A 25 2 Door Handle for upper doors Escutcheon Control less door 23D 60 3 with I shaped slot for flat door spring 23D 60 6 with U shaped slot for coil door spring To insure proper matching and fit
73. window 6x3 8 RH WS 1A 67 43 71 for mtg TV chassis 4 20x1 78B 47 1 Speaker 10 PM Spring Escutcheon Door 184 41 flat bronze spring used with 23D60 1 escutcheon for left or right hinge coil wire spring used with 23D60 5 escutcheon 19A 65 2 for left hinge facing front 19A 65 1 for right hinge facing front 18A 43 1 Spring TY Knob Tension for Tuning knob 18A 43 2 S u for Off Volume knob 18A 43 3 s n for Channel knob 18A 45 Spring Clip for mtg 23D67 picture window 5A 4 14 Washer Felt used behind Channel knob 5A 4 15 W used behind Picture knob 23D 67 Window Picture If only the mounting lugs are broken on nicture window 23D67 a metal replacement lug part number 15A668 can be pressed into the plastic by heating it with a soldering iron Instructions for installing Form No 8340 are in Part No Description cluded with the 3 lugs supplied under part number 15A668 A3091 AWENDA BUMIN EV MODELS 16R12 26R12 26R25A 26R26A 26R35A 26R36A 26R37A 26X55A 26X564 Y 26X65A 26X66A 26X67A 20X75A 26X76A 39X35 39136 Oh 2181 2101 21D1 21Hl 21J_1 11 9 39Vd AL IVAIWOV Schematic for 21B1 21C1 21H1 21J1 Televisio gu OO Veli Lon 1 212AT7 1 212AT7 L606 _ corr 6BA6 6BA6 E mM ri NE g Ai EH UU pes D seet 3 2 esos Au ma 77 Is Teo 130 Bet L M n SUGOIB IB BSMMFD KK BI 1 IO DD AM PHO FM SECTION OF 300 OHM LME SW
74. y clockwise CHANNEL con trol set on an unused channel Other front controls set at approximately half rotation Vert Lin and Height set at approximately half rotation e Voltages marked with an asterisk will vary widely with control setting In combination models B voltages in TV chassis will be slightly higher when set is switched to radio position Alter nate voltage readings for radio and TV are shown for sound output tube V204 6V6GT e Line voltage 117 volts AC e Voltages measured with a vacuum tube voltmeter between tube socket terminals and chassis unless otherwise indicated Voltages at V101 V102 V306 measured from top of socket with tube removed Picture Slightly Off Center Adjust ion trap as instructed on preceding page Slightly loosen the screw A which locks the picture positioning lever to the focus coil adjust the lever for correct picture centering Readjust the ion trap Picture Greatly Off Center Adjust ion trap as instructed on preceding pag Slightly loosen the two screws B which hold the focus coil to the yoke bracket Center focus coil around the tube neck tighten screws Loosen the screw A and center the picture with the picture positioning lever If the picture cannot be centered with the lever it may be necessary to locate the focus coil slightly off center and then center the picture with the picture positioning lever Readjust the ion trap Difficulty in Cen

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