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I recently acquired a 7934, and was stepping thru the service manual I downloaded from Tekwiki. Its missing pages 6-22 and 6-23 and every copy I could find was also missing the same pages. Anyone have a copy that would be willing to provide the missing pages? Or better an original manual for sale?

Mark
W7HPW

After looking at 3 totally different scans of the same printing of the 7934 manual I don't believe that pages 6-22 and 6-23 were in any manuals from the first printing. My three scans show file sizes of:
1. 112,361 KB Title "7934 Oscilloscope (1986) WW.pdf" 464 pages long
2. 210,637 KB Title "7934.pdf" (SECURED) 470 pages long
3. 72,903 KB Title "Tektronix-7934-service,user-ID2530.pdf" 501 pages long
#3 in the "schematics" section, the pages have been scanned 1/2 page at a time for those pages that were probably "B"size in the original manual. In some cases they were scanned in 1/3 page at a time.
#2 in the "schematics" section the pages are scanned the whole page at a time.
#1 same as #2.
There are other differences in the "schematics" sections with sizes of the pages, when I go through the pages at the same magnification settings of the Adobe Reader. #2 has some protection applied and is "SECURED". I can't use the "Snapshot Tool" from the "Tools" menu. In one scan I can see the holes for the spiral binding which the others don't have on the same page. There are other differences on the placement of some texts. But that could be from the scanning process. I don't know.
My conclusion and best guess is that, believe it or not, Tektronix did NOT print those missing pages in the first printing dated "May 1986". GASP! There are pages of "CHANGE INFORMATION" in the back of each scan. One shows signs of being stapled while others don't show this.
However is anyone can find those missing pages please scan and post them.
Bill

I have been skimming this thread, since I have a 7934, but not really
paying close attention to it.

I have an original 7934 manual from Tektronix, dated May 1986. It does have
pages 6-22 and 6-23. I can scan and upload them or send them privately.
It'll take me a day or two to do that.

DaveD
KC0WJN


On Fri, Mar 21, 2025 at 15:51 Bill via groups.io <wpgold3637=
[email protected]> wrote:

After looking at 3 totally different scans of the same printing of the
7934 manual I don't believe that pages 6-22 and 6-23 were in any manuals
from the first printing. My three scans show file sizes of:
1. 112,361 KB Title "7934 Oscilloscope (1986) WW.pdf" 464 pages
long
2. 210,637 KB Title "7934.pdf" (SECURED)
470 pages long
3. 72,903 KB Title "Tektronix-7934-service,user-ID2530.pdf" 501
pages long
#3 in the "schematics" section, the pages have been scanned 1/2 page at a
time for those pages that were probably "B"size in the original manual. In
some cases they were scanned in 1/3 page at a time.
#2 in the "schematics" section the pages are scanned the whole page at a
time.
#1 same as #2.
There are other differences in the "schematics" sections with sizes of the
pages, when I go through the pages at the same magnification settings of
the Adobe Reader. #2 has some protection applied and is "SECURED". I
can't use the "Snapshot Tool" from the "Tools" menu. In one scan I can see
the holes for the spiral binding which the others don't have on the same
page. There are other differences on the placement of some texts. But
that could be from the scanning process. I don't know.
My conclusion and best guess is that, believe it or not, Tektronix did NOT
print those missing pages in the first printing dated "May 1986". GASP!
There are pages of "CHANGE INFORMATION" in the back of each scan. One
shows signs of being stapled while others don't show this.
However is anyone can find those missing pages please scan and post them.
Bill

I should probably update the PDF of the manual on the TekWiki site. That'll
take a bit longer.

DaveD
KC0WJN


On Fri, Mar 21, 2025 at 16:08 Dave Daniel via groups.io <kc0wjn=
[email protected]> wrote:

I have been skimming this thread, since I have a 7934, but not really
paying close attention to it.

I have an original 7934 manual from Tektronix, dated May 1986. It does have
pages 6-22 and 6-23. I can scan and upload them or send them privately.
It'll take me a day or two to do that.

DaveD
KC0WJN


On Fri, Mar 21, 2025 at 15:51 Bill via groups.io <wpgold3637=
[email protected]> wrote:

After looking at 3 totally different scans of the same printing of the
7934 manual I don't believe that pages 6-22 and 6-23 were in any manuals
from the first printing. My three scans show file sizes of:
1. 112,361 KB Title "7934 Oscilloscope (1986) WW.pdf" 464 pages
long
2. 210,637 KB Title "7934.pdf" (SECURED)
470 pages long
3. 72,903 KB Title "Tektronix-7934-service,user-ID2530.pdf" 501
pages long
#3 in the "schematics" section, the pages have been scanned 1/2 page at a
time for those pages that were probably "B"size in the original manual.

In

some cases they were scanned in 1/3 page at a time.
#2 in the "schematics" section the pages are scanned the whole page at a
time.
#1 same as #2.
There are other differences in the "schematics" sections with sizes of

the

pages, when I go through the pages at the same magnification settings of
the Adobe Reader. #2 has some protection applied and is "SECURED". I
can't use the "Snapshot Tool" from the "Tools" menu. In one scan I can

see

the holes for the spiral binding which the others don't have on the same
page. There are other differences on the placement of some texts. But
that could be from the scanning process. I don't know.
My conclusion and best guess is that, believe it or not, Tektronix did

NOT

print those missing pages in the first printing dated "May 1986". GASP!
There are pages of "CHANGE INFORMATION" in the back of each scan. One
shows signs of being stapled while others don't show this.
However is anyone can find those missing pages please scan and post them.
Bill

It occurs to me that, if I am going to unbind my 7934 manual (re-binding is
a pain) to scan pages 6-22 and 6-23 in order to update the copy on TekWiki,
it would be useful to know if there are any other pages missing from the
online copy. This would require someone to go through the online manual
page-by-page to verify that those two pages are the only ones missing. I
don't have time to do that right now. If someone is willing to do that,
please let me know ASAP.

DaveD
KC0WJN


On Fri, Mar 21, 2025 at 16:25 Dave Daniel via groups.io <kc0wjn=
[email protected]> wrote:

I should probably update the PDF of the manual on the TekWiki site. That'll
take a bit longer.

DaveD
KC0WJN


On Fri, Mar 21, 2025 at 16:08 Dave Daniel via groups.io <kc0wjn=
[email protected]> wrote:

I have been skimming this thread, since I have a 7934, but not really
paying close attention to it.

I have an original 7934 manual from Tektronix, dated May 1986. It does

have

pages 6-22 and 6-23. I can scan and upload them or send them privately.
It'll take me a day or two to do that.

DaveD
KC0WJN


On Fri, Mar 21, 2025 at 15:51 Bill via groups.io <wpgold3637=
[email protected]> wrote:

After looking at 3 totally different scans of the same printing of the
7934 manual I don't believe that pages 6-22 and 6-23 were in any

manuals

from the first printing. My three scans show file sizes of:
1. 112,361 KB Title "7934 Oscilloscope (1986) WW.pdf" 464 pages
long
2. 210,637 KB Title "7934.pdf" (SECURED)
470 pages long
3. 72,903 KB Title "Tektronix-7934-service,user-ID2530.pdf"

501

pages long
#3 in the "schematics" section, the pages have been scanned 1/2 page

at a

time for those pages that were probably "B"size in the original manual.

In

some cases they were scanned in 1/3 page at a time.
#2 in the "schematics" section the pages are scanned the whole page at

a

time.
#1 same as #2.
There are other differences in the "schematics" sections with sizes of

the

pages, when I go through the pages at the same magnification settings

of

the Adobe Reader. #2 has some protection applied and is "SECURED". I
can't use the "Snapshot Tool" from the "Tools" menu. In one scan I can

see

the holes for the spiral binding which the others don't have on the

same

page. There are other differences on the placement of some texts. But
that could be from the scanning process. I don't know.
My conclusion and best guess is that, believe it or not, Tektronix did

NOT

print those missing pages in the first printing dated "May 1986".

GASP!

There are pages of "CHANGE INFORMATION" in the back of each scan. One
shows signs of being stapled while others don't show this.
However is anyone can find those missing pages please scan and post

them.

Bill

Looking through the manual, of the pages with numbers, the following are missing:

X, 3-1, 6-22, 6-23, 7-61, 9-12, 9-24

Bob

Thank you.

Sigh. I guess I'll have to unbind my copy and add those to the copy on
TekWiki.

DaveD
KC0WJN


On Fri, Mar 21, 2025 at 17:56 mst3krules via groups.io <mst3krules=
[email protected]> wrote:

Looking through the manual, of the pages with numbers, the following are
missing:

X, 3-1, 6-22, 6-23, 7-61, 9-12, 9-24

Bob

All,

Ok, I've unbound my 7934 manual and I started scanning the missing pages.

It turns out that my manual copy is Revision May 1986, but *Revised Aug 1987*.

Per Bob's email below:
Pages x, 9-12 and 9-24 are the last pages of their respective sections and are blank pages in my manual with no page numbers (but the facing pages are consistent).

My section 7 ("Replaceable Electrical Parts") is much different than the section 7 in the May 1986 revision. Updating the May 1986 revision with my section 7 would make the former revision inconsistent, so I do not plan to do that. My manual has no page 7-61; my section 7 ends at page 7-54. However, I would guess that page 7-61 in the May 1986 revision is the last page of section 7 and therefore blank and not numbered.

I have added pages 6-22 and 6-23 to my local copy of the May 1986 revision that is on the TekWiki site. I think that that omission is the only true error in the TekWiki manual revision. I will update the copy on TekWiki, hopefully later today (I am on EDT). In the meantime, I can send a copy of pages 6-22 and 6-23 to anyone that can't wait for me to update the copy on TekWiki. Please PM me in that case. kc0wjn at gmail dot com.

Comments and questions welcome; those should probably be handled privately at this point so as to not clutter up the list.

DaveD
KC0WJN

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I forgot to mention but I also noticed that there appears to be duplicate pages 6-16 to 6-20 and 7-18 to 7-21 at the rear of the manual. I did not compare them to see if there was any differences.

Bob

Could you send to me the logical PDF page numbers of the pages to which you
refer?

Thanks.

DaveD
KC0WJN


On Sat, Mar 22, 2025 at 07:15 mst3krules via groups.io <mst3krules=
[email protected]> wrote:

I forgot to mention but I also noticed that there appears to be duplicate
pages 6-16 to 6-20 and 7-18 to 7-21 at the rear of the manual. I did not
compare them to see if there was any differences.

Bob

Pages 459 - 467

Bob

Thanks.

DaveD
KC0WJN


On Sat, Mar 22, 2025 at 07:24 mst3krules via groups.io <mst3krules=
[email protected]> wrote:

Pages 459 - 467

Bob

I don't see any duplicate pages in the TekWiki copy of the 7934 manual.

Also, the May 1986 PDF ends with section 7. My copy (Aug 1987) has sections 8 and 9.

I'm a bit confused. It would be helpful if someone out there has an original, printed copy of the May 1987 (unrevised) copy of the manual.

DaveD
KC0WJN

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The copy I look at came from this link:



Part No. 070-5880-00
MANUAL Product Group No. 42
First Printing May 1986

It has what I assume is section 8, which isn't numbered, then section 9 followed by a section of Manual Change Information then the duplicate pages.

Bob

Bob,

Yes, thank you. I see that I concluded that it doesn't have sections 8 and 9 because I was looking at the end of the PDF, which are the Change Information pages. I do see the duplicate pages.

Without a copy of the original manual (or an original manual itself) I can't tell what else might be incorrect with the online copies. Since many of the pages of the online copies are partial pages, I'd have to compare the pages in the online PDFs to an original manual. Perhaps someone out there could do that, but since the 7934 is pretty rare, I doubt that there is anyone who is paying attention to this thread who will do that.

I have sent pp. 31, 6-22 and 6-23 to Mark, the OP. That will have to suffice, for now. I may upload my revised PDF that contains those three missing pages. I can scan my original that is a later revision, but that will take a lot of time due to the fold-out pages.

DaveD
KC0WJN

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This email has been checked for viruses by Avast antivirus software.
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On Sat, Mar 22, 2025 at 07:39 AM, Dave Daniel wrote:

I have sent pp. 31, 6-22 and 6-23 to Mark, the OP.

Where and who is "Mark, the OP"? Could you consider uploading just those 3 pages, 3-1, 6-22 and 6-23 to TEKSCOPES files area? That would help anyone, including me, update the old manual until such time as Mark can insert those pages into that copy, where ever that is? Then I don't have to remember to update or download a newer copy at some time in the future.
Thanks so much for taking the time to do this,
Bill

I would very much appreciate those scans

Mark
W7HPW

Real Radios Glow in the Dark

I have an original Tektronix service manual for the 7934, dated First printing May 1986, I also have two, count them two, 7934.
Is there any question I may answer for you?????

Karin Anne Johnson P.E. K3UU
Palm Harbor, Florida

Just as a sidebar, my manual in section 7, last page is 7-74.

Karin

Karin,

There was a request by another list member for help acquiring pages that
are missing from the various 7934 PDF copies of the May 1986 revision
manual out on the internet. I was trying to figure out how closely the 7934
manual, revision May 1986, found on the TekWiki site, matches an actual,
original 7934 manual as published by Tektronix. So far, it is clear that
pages 3-1, 6-22 and 6-23 are missing from the PDF copy on the TekWiki site.
In addition, the copy on the TekWiki site has many pages that appear to be
partial scans of larger pages.

It would be useful, if tedious, for someone who owns an original copy of
the May 1986 manual to do a page-by-page comparison to see what other
differences exist between an original manual and the copy on TekWiki.

I have a 7934 and an original 7934 manual published by Tektronix, revision
May 1996, *revised August 1987*, from which I have scanned the above listed
three missing pages and added them to my local copy of the May 1986
revision. I may decide to replace the PDF copy on TekWiki with my updated
copy. The pages between the two revisions appear to be consistent.

I am also in the process of scanning my August 1987 revision which I will
also put on the TekWiki site, but that will take some time because of the
large number of foldout pages. You probably know how that goes.

My intent has been to provide an accurate copy of *a* 7934 manual for
others to access.

DaveD
KC0WJN
Mims, FL


On Tue, Mar 25, 2025 at 19:15 Karin Johnson via groups.io <karinann=
[email protected]> wrote:

I have an original Tektronix service manual for the 7934, dated First
printing May 1986, I also have two, count them two, 7934.
Is there any question I may answer for you?????

Karin Anne Johnson P.E. K3UU
Palm Harbor, Florida