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