RCA 73-B MI-11825 Instructions Manual Download Page 4 | Manualshive

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Summary of Contents for 73-B MI-11825

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Page 3: ...www SteamPoweredRadio Com BROADCAST EQUIPMENT INSTRUCTIONS Type 73 B Prolessional Recorder Ml 11825 Ml 11826 RADIO CORPORATIOn OF AffiERICA RCA VICTOR 0 1v1s1on CAmoen n J Pl II 0 IN U A ...

Page 4: ...www SteamPoweredRadio Com Figure 1 Type 73 8 Professiono Recorder ...

Page 5: ...ews The feed screw drive consistS of a pulley and belt system between the drive shaft and turntable spin dle Mounted on the drive shaft above the turntable is a friction wheel which drives a flange on the end of the feed screw The friction wheel may be moved up and down over the entire diameter of the flange by means of a knob on the outside of the drive shaft housing This adjustment selects the r...

Page 6: ...asso ciated arm assembly is provided for mounting along side the turntable The microscope scale is calibrated so that each division represents 0 001 inch on the object viewed This permits aetual measurement of groove and wall widths of the record face and by comparison of the dimensions thus obtained with known standards for recording work and with proper interpretation superior recordings may be ...

Page 7: ...www SteamPoweredRadio Com I I r ii r 4 1 1 T 1 r i __ 1 i i j L J ror r L tfo i l 0 Figure 2 Mounting Details ol Recorder 3 ...

Page 8: ...ICATED 73 8 RECORDER INCLUDES Ml 1182 lOR MHl826 ANO Ml 11850 C r I zon JOOn 2701 on o I f 1 R J i R 7 R II I I IOI JJOI 4 JOn 4 70 n R 2 I R R 6 J l a 1 11 10 I I L C I 01 t 41 0 S I 1 L 902018 501 L I BLK I I I I IA 2 I I I I NJTOt UrrlC EQUAUZEFI MHIIOO 7 l A l I _ _ r _ _ r7 I I I WHT V __ I I I REPROOUCER I I Mt 11899 I CUTTER HE AO M 1 1111 0 C _ _ _ _ __ _ ______ j IIOO JJ 0 C 3 n049 570 Ml...

Page 9: ...on with the equalizer Wiring from this plug to the terminal board is already installed Refer to the instruction book on the equalizer for further com plete installation instructions Advance Ball Kit To control the depth of the recording groove ac cuntely an MI 11851 Advance Ball Kit is recom 5 mended for use with the MI 11850 C Recorder Head when cutting wax discs or when vibration problems are se...

Page 10: ...www SteamPoweredRadio Com 6 0 i ft t i t t 1 AJ u t le 1 l I I I I _ _ _ _ _ _ _ _ t r J iii _ L___ Figure 4 Wir g Diagram ol Ml 11825 and Ml 11826 t i l ...

Page 11: ...put signal at the proper strength throughout the recording 14 To cut a spiral for beginning ending or separating portions of a recording press the spi 7 railing switch Do not use the spiralling motor con tinuously for any length of time other than to cut the necessary spirals on the record 15 At the conclusion of the recording raise the stylus lowering lever which lifts the recorder head from the ...

Page 12: ... PTH OFCVT CONTROi ANGLE OF CUT CONTROL figure 5 llecording Control FEEO NUT DISENGAGING LEVER ANO LATCH RECOROER HEAD I Cl WERING 1 LEVER Jt317 COMPtNSATOII MOTO 80A 0 62041 ACC PTACLt Figure 6 Main AnemlJy 492 3 Ml II e2s PUULY 49271 M 11829 412 4S BELT I ...

Page 13: ...2 49277 M1 11112e1 492 41 111129 MOTOR 49211 SCREW 49281 LEVER 0 49273 SWITCH 492 MOUNTING 110 GROMMET 52400 TRANSFORMER 4921 SCREW 49275 GAPM ITOA 492S7 PULLEY 49278 1 11 11826 49260 l ll ll82S PULLEY 492 MOUNTING 492 3 BRAKE S2S67 RESISTOR 9 ...

Page 14: ... T 49232 SPRING 49158 PULLEY 53233 4 3220 53849 PULLEY I I I jI I ff jl 1 7 I I I l t I I I l I l i j I II I I I I I I I Figure 8 Recorder Head Drive Aueml Jy 4gI90 WHEEL END Of COVE R RE MOVED 43217 RACK 49240 GEAR 49192 COLLAR 49191 HOUSING 43238 BALL 49194 COLLAR I ...

Page 15: ...e 53080 Motor spiralling drive M 3 49238 Mounting Lord 44090 Plug recorder bead J l 52500 Plug button for pickup arm rest 70407 Pulley spiralling motor with set screw MI 11825 49253 Pulley spiralling motor with set screw Ml 11826 49276 Receptacle pickup arm J 6 53082 Receptacle recorder head J 2 52401 figure 9 TurntalJe Aueml Jy 11 49234 BEARING 492 35 PINOI E 49236 PULLEY 432 37 BALL 432 42 BEARI...

Page 16: ... 11 Microecope and Ann AuemlJy 49177 SPRING 49173 SPRING 49172 STUD 49175 S HAFT 49185 SPRING 49171 FEED NUT 49203 CARRIAGE 49199 ARM 49168 PLATE 49196 COVER 49170 ARM 491 74 SPRING _ _ 49169 PIN 49189 PIN 49198 BRACKET 49197 BRACKET tTIH4 601 52972 SCREW I Figure 12 Carrias e AuemlJy ...

Page 17: ... 49216 49218 49217 49222 49220 44887 49215 49225 33134 49208 49223 49244 49226 49221 D smt liO Socket microscope pilot lamp Switch microscope pilot lamp S 5 Washer spring microscope pilot lamp Carriage Assembly Arm carriage lift Arm feed nut support with 2 aet screws Bracket recorder bead support with pin Bracket slide Carriage and bushing with pin Cover carriage Feed nut Pio feed nut arm support ...

Page 18: ...www SteamPoweredRadio Com 14 4t212 CAM au OST 41181 L 1 VC A 41202 UIO ao a SCA W Figure 13 Carrioge Drive JwemlJy iff 1 ...

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