I have made considerable progress, but have hit a wall.
I downloaded a reference to PCL. Under Paper (Media) Source, I saw
the code to explain why the bypass tray was being used. The WSCST
had this for DRAWER=PAPER: DATA = '1B266C3248'X.
The second from the right hex chars x'32' command "Feed paper from
I changed that to 31. Now, draws from drawer 1. At the bottom of the
codes for paper source is this entry:
20 -39 High Capacity Input (HCI) Trays 2-21.
Since I need tray 3, it seemed simple. If tray 2 is 20, then tray 3
must be 21.
So, I converted 21 (assumed decimal, based on 32 being ASCII value
of 2 for manual input) to 15.
That didn't work. Printer rejected that sequence.
So, question is (feels like snatching defeat from the jaws of
victory), what goes into that position?
I know this is not an IBM issue. I found another 5135 that they also
would very much like to use tray 3. I'm just not understanding what
that value should be.