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From: mac@harris.cis.ksu.edu (Myron A. Calhoun)
Newsgroups: sci.electronics,rec.ham-radio
Subject: Chip Identificationi wanted
Keywords: HELP
Message-ID: <1990Feb3.195530.19453@deimos.cis.ksu.edu>
Date: 3 Feb 90 19:55:30 GMT
Sender: @deimos.cis.ksu.edu
Reply-To: mac@harris.cis.ksu.edu (Myron A. Calhoun)
Distribution: usa
Organization: Kansas State University, Dept of Computing & Information Sciences
Lines: 21

I need to repair my Yaesu FRG-8800 general coverage receiver
(one of the two local-oscillator PLL's is unlocking) and I'd
like to know what the following IC's are:

  MC14028BCP, MC14042BCP, MC14081BCP, and MC14555BCP  (I suspect
  these are just CMOS digital things, but I'd like to have a
  one-line description of their respective functions.)

  I'd also appreciate one-line descriptions of the following, but
  in this case I'm quite sure they are working; I'm just curious!
  MH63A05X0A12 (the main microprocessor; a 6305?)
  MN6147, AN6552, and PC1037H.

I have a service manual with schematics, etc., but nowhere does
it describe what the above are; it just gives part numbers.
Thanks in advance. --Myron.
--
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