I've also uploaded manuals for the BM1A5 and 9461, which may also be of help.
The BM1A5 looks similar to the BM101, and I had all three manuals for it scanned.
The 841 looks very similar to the IBM 2314, down to putting multiple Drives in
a rack you had to slide out to swap packs.
On 2/18/18 12:09 PM, Al Kossow via cctalk wrote: