Sony icf sw 07 service manual

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Ð 3 Ð SECTION 1 SERVICE NOTE REPLACING THE SW STATION CALL ROM The propagation of short-wave radio waves is greatly affected by many causes such as atmospheric phenomenon due to dark spots on the sun, etc. This makes it necessary for short wave radio broadcast stations to periodically change their broadcast frequencies. This set can be re- placed with a new SW STATION CALL ROM to allow changing the broadcast frequencies. This set came with the latest ROM (Sony) when purchased. The user can later on when needed, purchase the latest updated ROM (F Corp.) version from the F Corporation on referring to the instruc- tions for ÒPurchasing the Latest SW STATION CALL ROMÓ which are included with the unit. These ROMs can also be custom made to match the userÕs particular combination of broad- cast station frequencies. ¥ Identify the 2 different types of ROMs (Sony or F Corp.) as follows. The Sony ROM has no printing on it. The F Corp. ROM is marked with the F Corporation name. ¥ Servicing is provided for the accessory Sony ROM. ¥ Only the most recent version is supplied for replacing the Sony ROM. ¥ A new Sony ROM is issued every year in October and the part No. suffix is also changed. ¥ A new updated Sony ROM is issued every year so is not usually kept in stock. ¥ Servicing is not provided for the F Corp. ROM. ¥ Instruct the user to directly contact the F Corporation when the F Corp. ROM is obviously malfunctioning or defective. Address Mail : F Corporation P.O. Box 816 Tokyo 100-8692 Japan Fax : 81-3-3436-1932 E-mail : fco@wavehandbook.com Q130 Short land AEP, 7AEP model only Connecting short land as in the figure when changed main board. [MAIN BOARD] (SIDE A)