Where to find 1968 to 1971 U69 AM/FM radio schematic

[Robert N.]

I found a source for a U69 Delco 7302721 AM/FM radio schematic that I thought I would pass on, it was not easy to find with a simple web search. This radio is listed in the 1968 - 1971 AIMs as Option U69.

It can be found in Sams Photofact Auto Radio Series book, edition AR-52 from July 1968, pages 19 - 31. Includes circuit board photos, schematic, component descriptions and alignment instructions.

I believe that the material is still copyrighted, so you will need to find a copy. An excellent source is http://theschematicman.com/books.htm, $9.95 with free shipping! The difficult part is that there is not an index (that I know of) that tells you what radios are in which edition and you order by edition number. Not a problem now that you know it is in AR-52, but difficult if you are looking for another radio.

Talk about a bygone era, there were enough electronic hobbyists around (and the electronics of the day were so unreliable) that a company could make a buck publishing schematic books!

[Jeff P.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

I recently purchased a 68 radio guide,repair, schematics,pictures ect. If anyone would like a copy we could first fax this to see if the clarity is ok or make a copy. Glad to help. Jeff

[Dale C.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

If you need radio info, look for this manual. It comes up on EBay every now and then. Has a bunch of stuff and there are others for other years.
Dale


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[Jeff P.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

Jeff can you fax this radio schematic to 1586-231-0392 and we'll check the clarity?

[Jeff P.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

Sure Jeff, I'll work on that in the morning

[Jerry R.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

The stereo receiver version and separate stereo decoder/amp schematics can be found in AR-78. It's generic enough to cover 68 to 72. The original Delco radio maintenance manuals are just annoying to use.

[William C.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

Delco Radio Service Manual has them, email me if you need a copy of a particular page. I have a 1970 printing, email me with your specifica and I will see if it is covered. Need the radio part number from the sticker on the radio

[Dick W.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

I found a source for a U69 Delco 7302721 AM/FM radio schematic that I thought I would pass on, it was not easy to find with a simple web search. This radio is listed in the 1968 - 1971 AIMs as Option U69.

It can be found in Sams Photofact Auto Radio Series book, edition AR-52 from July 1968, pages 19 - 31. Includes circuit board photos, schematic, component descriptions and alignment instructions.

I believe that the material is still copyrighted, so you will need to find a copy. An excellent source is http://theschematicman.com/books.htm, $9.95 with free shipping! The difficult part is that there is not an index (that I know of) that tells you what radios are in which edition and you order by edition number. Not a problem now that you know it is in AR-52, but difficult if you are looking for another radio.

Talk about a bygone era, there were enough electronic hobbyists around (and the electronics of the day were so unreliable) that a company could make a buck publishing schematic books!

The SAMS Photofacts was an expensive publication back in the day. Every TV and Radio repair shop had them.

[Dick W.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

From Ralhie

[Dale C.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

Hi Dick
Getting off topic here but I see you have the 69 Delco Radio Manual. I am trying to verify that statement in the JM on the lettering on the stereo light changing from script to block lettering from 68 to 69. Nowhere can I find any script lettering. My 68 Delco Book calls for the stereo indicator for the corvette 7303211 radio to use a 7304761 (indicator, stereo) part that's illustrated as #'s - 16C and 20 (can't see anything). Is it the same for the 69 Delco Book? In the 68 Delco Book it's under section D 15 for the stereo radio. I've talked to a number rebuilders and seen a bunch of 68 serial numbered radios and all are block lettering. Radios from serial #121 (I have) to 1716 (I also have) and then up to the 3000's. One builder, who has done a bunch of NCRS radios thinks that cursive lettering may have been a Buick part, not Corvette.
Thanks
Dale

[Dick W.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

Hi Dick
Getting off topic here but I see you have the 69 Delco Radio Manual. I am trying to verify that statement in the JM on the lettering on the stereo light changing from script to block lettering from 68 to 69. Nowhere can I find any script lettering. My 68 Delco Book calls for the stereo indicator for the corvette 7303211 radio to use a 7304761 (indicator, stereo) part that's illustrated as #'s - 16C and 20 (can't see anything). Is it the same for the 69 Delco Book? In the 68 Delco Book it's under section D 15 for the stereo radio. I've talked to a number rebuilders and seen a bunch of 68 serial numbered radios and all are block lettering. Radios from serial #121 (I have) to 1716 (I also have) and then up to the 3000's. One builder, who has done a bunch of NCRS radios thinks that cursive lettering may have been a Buick part, not Corvette.
Thanks
Dale

Don't have it, another member asked me to post the picture, sorry

[Terry M.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

Dale,

You missed Dick's statement "From Ralphie" That means the photo is from Ralph Spears who is photo-posting challenged. Ralph frequently sends photos to a select few of us here to post on his behalf. Dick does not have that particular Delco Manual -- however some of us have that one and others. Dick may have some radio manuals -- I don't know.

It has been years since I looked at mine, but my recollection is that there is no answer in those manuals to the stereo indicator question you raise. I remember looking when we first revised the early C3 Judging Manuals, as they were called then, back in 1993. Our information for the TIM&JG came from observations of 1968 & 1969 Corvettes. I will state the obvious and tell you we did not observe ALL 1968 & 1969 U69/U79 equipped Corvettes.

[Dale C.]

Re: Where to find 1968 to 1971 U69 AM/FM radio schematic

Dick & Terry
Thanks to both. Terry, as you inferred, it would be impossible (without seeing almost every car), to make a call as definitive as is implied in the JM. The phrasing leaves little room for correctness of a bunch of radios I have observed. Just digging, as this is the fun of what we do. Your right, the 68 Delco book didn't answer any questions on the script, I was just wondering if the stereo light had the same P/N in 69 as 68.
Dale