Excellent Coverage, Hard to find Factory Information. 1929 – 1940 Zenith Radio Corporation SERVICE MANUAL This is a Reproduction of Original Zenith Factory Service Data This is a large Manual on CD w/ Adobe Reader – 618 Pages of Information These Schematics Cover cover many Tube type Zenith Radios This is a wealth of information for any Radio wanting to be repaired or parting out. Radio Models covered are: Model A , B, C, D , L, LP , AH , CH , BH, RH , LH, WH , MH , 7 Jr. (Auto Receiver) , 10, 11, 12, 50 , 52 , 54 , 60 , 61 , 62 , 64 , 67 , 70 , 71 , 72 , 73 , 77 , 80 , 91 , 92 , 102 , 103 , 112 , 122 , 210 , 211 , 215 , 216 , 217 , 220 , 221 , 225 , 230 , 240 , 241 , 244 , 245 , 250 , 251 , 252 , 258 , 259 , 260 , 261 , 262 , 263 , 268 , 269 , 270 , 271 , 272 , 273 , 277 , 278 , 280 , 281 Chassis 2051 and Model 281 Chassis 2056 , Model 288 , 289 , 291 , 292 , 293 , 299 , 410, 411 , 412 , 414 , 420 , 430 , 440 , 441 , 442 , 443 , 444 , 460 , 462 , 470 , 472 , 473 , 474 , 475 , 476 , 476B , 478 , 479 , 500 , 501 , 502 , 503 , 514 , 515 , 516 , 517 , 518 , 520 , 521 , 530 , 531 , 532 , 533 , 558 , 563 , 568 , 577 , 578 , 585 , 588 , 589 , 590 , 593 , 600 , 602 , 603 , 604 , 605 , 606 , 608 , 610 , 611 , 612 , 615 , 616 , 617 , 618 , 619 , 620 , 622 , 623 , 642 , 650 , 660 , 663 , 664 , 666 , 668 , 672 , 701 , 702 , 705 , 706 , 707 , 711 , 712 , 712 , 715 , 722 , 732 , 750 , 755 , 756 , 757 , 760 , 765 , 767 , 770 , 770B , 772 , 775 , 775B , 777 , 780 , 785 , 788 , 801 , 805 , 807 , 808 , 809 , 810 , 811 , 812 , 816 , 817 , 819 , 825 , 827 , S827 , 829 , S829 , 835 , 845 , S847 , 850 , 861 , 862 , 865 , 866 , 870 , S870 , S871 , 880 , 881 , 885 , 887 , 908 , S908 , 909 , S909 , 935 , 945 , 950 , 960 , S961 , 962 , 963 , 966 , 970 , 975 , 978 , 980 , 983 , 985 , 990 , 1101 , 1105 , 1107 , 1112 , 1114 , 1115 , 1116 , 1117 , 1118 , 1160 , 1162 , 1167 , 1170 , 4B106 , 4B131 , 4B132 , 4-B-231 , 4-B-313 , 4-B-314 , 4-B-317 , 4-B-422 , 4-B-437 , 4-B-466 , 4-B-468 , 4F133 , 4F227 , 4K310 , 4K329 , 4K331 , 4K332 , 4K354 , 4K355 , 4K400 , 4K402 , 4K422 , 4K435 , 4K465 , 4P26 , 4P51 , 4T26 , 4T51 , 4V31 , 4V59 , 5F134 , 5F166 , 5-F-233 , 5-F-251 , 5-G-401 , 5-G-438 , 5-G-441 , 5-G-442 , 5-G-461 , 5-G-467 , 5-G-484 , 5-J-217 , 5-J-247 , 5-J-255 , 5-J-353 , 5M90 , 5M191 , 5M191 , 5M291 , 5M294 , 5R123 , 5R135 , 5R165 , 5-R-216 , 5-R-226 , 5-R-236 , 5-R-303 , 5-R-312 5-R-316 , 5-R-317 , 5-R-337 , 5S29 , 5S56 , 5S119 , 5S125 , 5S127 , 5S150 , 5S151 , 5S161 , 5-S-201 , 5-S-218 , 5-S-220 , 5-S-228 , 5-S-237 , 5-S-250 , 5-S-252 , 5-S-319 , 5-S-327 , 5-S-330 , 5-S-338 , 5-S339 , 5X230 , 5X248 , 5X274 , 6B107 , 6B129 , 6B164 , 6-B-321 , 6D116 , 6D117 , 6D118 , 6-D-202 , 6-D-219 , 6-D-221 , 6-D-238 , 6-D-302, 6-D-311 , 6D315 , 6-D-326 , 6-D-312 , 6-D-316 , 6-D-317 ,6-D-336 , 6-D-337 , 6-D-360 6-D-410 , 6-D-411 , 6-D-413 , 6-D-414 , 6-D-425 , 6-D-426 , 6-D-427 , 6-D-446 , 6-D-455 , 6-J-230 . 6-J-257 , 6-J-322 . 6-J-357 , 6-J-436 , 6-J-463 , 6M92 , 6M90S , 6M90D , 6M91S , 6M91D , 6M192 , 6M193 , 6M194 , 6M292 , 6M293 , 6M295 , 6M390 , 6MF490 , 6MN495 , 6MN496 , 6P416 , 6P417 , 6P418 , 6P419 , 6P428 , 6P429 , 6P430 , 6P447 , 6P448 , 6P457 , 6R481 , 6R485 , 6S27 , 6S52 , 6S128 , 6S137 , 6S147 , 6S152 , 6S157 , 6-S-203 , 6-S-222 , 6-S-223 , 6-S-229 , 6-S-239 , 6-S-241 , 6-S-254 , 6-S-256 , 6-S-301 , 6-S-304 , 6-S-305 , 6-S-306 , 6-S-321 , 6-S-322 , 6-S-330 , 6-S-340 , 6-S-341 , 6-S-351 , 6-S-352 , 6-S-361 , 6-S-362 , 6-S-439 , 6-S-469 , 6V27 , 6V62 , 7D119 , 7D126 , 7D127 , 7D138 , 7D148 , 7D151 , 7D162 , 7D168 , 7-D-203 , 7-D-222 , 7-D-223 , 7-D-229 , 7-D-239 , 7-D-241 , 7-D-243 , 7-D-253 , 7-J-232 , 7-J-259 , 7-J-323 , 7-J-368 , 7M91S , 7M91D , 7S28 , 7S53 , 7-S-204 , 7-S-232 , 7-S-240 , 7-S-242 , 7-S-258 , 7-S-260 , 7-S-251 , 7-S-323 , 7-S-342 , 7-S-343 , 7-S-363 , 7-S-364 , 7-S-366 , 7-S-432 , 7-S-432 , 7-S-433 , 7-S-434 , 7-S-449 , 7-S-449 , 7-S-450 , 7-S-458 , 7-S-459 , 7-S-460 , 7-S-461 , 7-S-462 , 7-S-487 , 7-S-488 , 7-S-490 , 8M195 , 8S129 , 8S154 , 8S359 , 8S432 , 8S433 , 8S434 , 8S443 , 8S449 , 9S450 , 8S451 , 8S458 , 8S459 , 8S460 , 8S461 , 8S462 , 8S463 , 9S30 , 9S54 , 9S55 , 9-S-204 , 9-S-232 , 9-S-242 , 9-S-244 , 9-S-262 , 9-S-263 , 9-S-264 , 9-S-307 , 9-S-324 , 9-S-344 , 9-S-365 , 9-S-367 , 9-S-369 , 10S130 , 10S147 , 10S153 , 10S155 , 10S156 , 10S157 , 10S160 , 10S443 , 10S452 , 10S454 , 10S470 , 10S491 , 10S492 , 11S474 , 12A57 , 12A58 , 12-S-205 , 12-S-232 , 12-S-245 , 12-S-265, 12-S-267 , 12-S-268 , 12-S-345 , 12-S-370 , 12-S-371 , 1`2-S-374 , 12-S-445 , 12-S-453 , 12-S-471 , 12-S-475 , 12-S-494 , 12U158 , 12U159 , 15-S-308 , 15-S-346 , 15-S-372 , 15-S-373 , 15-S-479 , 15-S-495 , 15-U-246 , 15-U-269 , 15-U-270 , 15-U-271 , 15-U-272 , 15-U-273 , 16A61 Str. , 16A63 Str. , Radio Nurse , Stratosphere 25 Tube First Series , and Stratosphere Second Series , Tube Data Sheet , Ravox Hearing Aid , Record Changer for 1938 , 1939 , and 1940 . Shortwave & AM , This Manual does cover a lot of ground and cover I believe ALL Zeniths produced between 1929 and 1940. These Schematics show how to troubleshoot all the tubes and how to bring A non-working unit back to life, even if you can not read these schematics or Diagrams they are invaluable to a Service Technician working on a Older Unit. Plate Voltages are shown, Capacitor and resistor Values are show if one is Burned up or missing. All Tube Numbers are shown if a tube is missing. Speaker Field resistance values are shown to aid in troubleshooting the Speaker and Sound output. This is a High Quality, Easy to read re-production from Original Schematics. (Note: Picture shown is only an Example) ALSO: If you are looking for Old Radio Schematics, ALL Makes, All Models (US Only) I am always listing new Sets, Good Luck. Key Zenith Manual I (Remember this is a CD, You must be satisfied with its operation, no complaints yet. Copyright Reserved and CD Coded for Tracing Shipping 4.00