I have a 5890i and a 7855i both running 2016 73 platform spars . I'm not sure on exact SW level and if a more recent version of SW has fixed the below issues. Both have high cap feeders.
Setup for trays on both printers:
Tray 18.5x11 LEF, plain, white
Tray 28.5x14 SEF, plain, white
Tray 3,4,68.5x11 LEF, plain, white
Tray 6 is lowest priority
Copy default is Automatic paper selection in all of below senerios.
1. If I SEF copy a 8.5x11 origional withoutmixed size originals selected(MSO), the machine is smart and will flip the image and print off tray 6
2. If I SEF a 8.5x11 origional withMSO selected it will print the 8.5x11 onto 8.5x14 from tray 2
3. If same as number 2, but I have programed tray 1 as 8.5x11 SEF it will print on the correct paper size and pull from tray 1.
This means I must always have SEF 8.5x11 in tray 1 when using the mixed size origionals feature else I get 8.5x14 and 8.5x11 SEF originals all coming out on 8.5x14. This defeats the use of a high cap feeder, which cannot be loaded SEF.
4. If I LEF copy a 8.5x11 (MSO enabled) it will not print from any tray. It will prompt "please load 8x11 LEF in any tray". As soon as MSO is disabled it will pull fine off Tray 6.
Another odity with ConnectKey(including latest spar) with settings of
paper source: automatic paper select
MSO disabled
If I SEF copy 8.5x11 it will say "resources required" ifany tray is programed as "SEF 8.5x11 plain, white" but that tray is currently empty (say bypass). As soon as bypass is programed to say "SEF 8.5x11, cardstock, white" the machine is happy to flip the image and pull off any 8.5x11 LEF plain tray.