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Summary of Contents for Zenith A507F
- Page 1 ERVICE MANUAL FIDELITY AND STEREO FM MODELS ZENIT RADIO CORPORATION 1900 N. AUSTIN AVENUE C ICAGO, ILLINOIS 60639 PART NO. 923-592 F 18 SUPPLEMENT #2 PRICE $1.50...
- Page 3 INDEX ALL C ASSIS COVERED IN SERVICE MANUAL F-18 (923-558) EXCEPT •C ASSIS COVERED IN SERVICE MANUAL F-18S (923-576) ••C ASSIS COVERED IN T IS SERVICE MANUAL F-18S2 (923-592) C ASSIS PARTS LIST SC EMATIC LAYOUT C ASSIS PAGE PAGE PAGE —...
- Page 4 PART SIZE MODEL STYLE COLOR IMPE MODEL TYPE POWER DANCE INC ES NUMBER OUTPUT (IN O MS) 1-2x6 A507F Table Green 49-1184 3AT20 3 T ransistor (w/handle) Phono Only (lift lid) A507L Table 1-2x6 Beige 49-1184 3AT20 3 Transistor...
- Page 5 FEATURES OF IG FIDELITY & STEREO FM MODELS OT ER FEATU RES RECORD C ANGER REMOTE INDI RECORD 45 RPM STYLUS CATOR NUMBER TAPE SPEAKER MOUNTING CARTRIDGE ADAPTOR STORA.GE NOTE 1 LIG T PROVISION S-72648 — • 169-374 Shelf 142-170 56-567 S-84995...
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Page 6: General Information
For theory and operation, of circuits covered in this manual, All models contain an FM antenna built into the cabinet. This refer to Service Manual HF 18 (Zenith Part No. 92 -558). antenna is a folded dipole cut to the desired frequency, and is attached to the internal periphery of the cabinet. - Page 7 A hissing sound may be noted when tuning between Frequency Modulation As a special feature to aid the Service Technician, Zenith has stations. This is normal, and will disappear as the station is identified the location of components which are mounted on tuned in.
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Page 8: Signal Tracing
SIGNAL TRACING A technique used in radio commonly known as “ Screw driver testing ” in which the B plus at the plate of the tube or collector of a transistor is shorted to ground to check for “ clicks ” in the speaker, is definitely not recommended. This practice would be comparable to shorting the collector of a transistor to ground which could damage the transistor. - Page 9 > > k_ •w +-» co 5 fe E & H- >* </) i c n > -K £3 E ■H "co CD "2 fl! > O 3 2 O +*J a. = C <± .<2 +-• K CO -D — <0 □...
- Page 10 Using the Zenith FM multiplex signal generator, the multiplex megahertz must be on the curve at the reference line. 10.5 portion of* Zenith or any FM multiplex receiver can be aligned, megahertz and 10.9 megahertz must be at the lower and upper but first b efore any attempt is made to do this it is necessary turn of the S curve respectively.
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Page 11: Trouble-S Ooting
in this manner the multiplex alignment would then be the best portion, the multiplex generator can be use*d as an excellent that could possibily be obtained and separation would be the signal tracing device to determine if the multiplex section of maximum for this receiver. -
Page 12: Parts List
PARTS LIST NOTE: Certain circuit boards included in this parts list have component locations identified by item number on the circuit board. These ittem numbers are also shown on the schematic and in the following parts list - See HF 18 for more information. ITEM ITEM PART... - Page 13 NOTE: Certain circuit boards included in this parts list have component locations identified by item number on the circuit board. These item numbers are also shown on the schematic and in the following parts list - See HF 18 for more information. ITEM PART ITEM...
- Page 14 NOTE: Certain circuit boards included in this parts list have component locations identified by item number on the circuit board. These item numbers are also shown on the schematic and in the following parts list - See HF 18 for more information. ITEM PART ITEM...
- Page 15 NOTE: Certain circuit boards included in this parts list have component locations identified by item number o n the circuit board. These item numbers are also shown on the schematic and in the followina Darts list - See HF 18 for more info rmation. ITEM PART ITEM...
- Page 16 NOTES...
- Page 17 NOTES...
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- Page 24 21BT30- C ASSIS WIRING AND COMPONENTS AS VIEWED FROM FOIL SIDE...
- Page 25 21 BT30 -SC EMATIC...
- Page 26 21 BT30 - C ASSIS LAYOUT...
- Page 28 ZENIT RADIO CORPORATION 1900 N. AUSTIN AVENUE C ICAGO. ILLINOIS 60639 SPECIFICATIONS SUBJECT TO C ANGE WIT OUT NOTICE 923-592 F 1852 RR 3/70 30M PRINTED IN U.S.A.
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