Looking at the Service Manual posted on Feedroller.com I can see the follwing details that may assist you:
Reinstallation tip If after the upper crossmember assembly is removed and replaced the
message 13.60.A1 Jam in Top Left Door appears on the control panel display (or in the event
log) after the product power is turned on, the two pivot arms or the locking bar might not have
been properly installed.
Reinstallation tip If after the swing guide assembly is removed and replaced the message
13.60.A1 Jam in Top Left Door appears on the control panel display (or in the event log) after
the product power is turned on, the two pivot arms or the locking bar might not have been
properly installed.
I could not find any mention of a 60.00.40 error code in the service manual posted to that site. However it is also labled as a "Not Final" copy which is unusual for feedroller. This makes me think that either the entire Service Manual is not fully published yet or that noone else has a working copy of it to share. In any case to get an official Service Manual your best bet is to continue to work with HP until you recieve the documentation you need. Considering that you are a certified HP technician HP should have some kind of a technical contact for you to complete your work or someone that manages your account for you. If not then now may be a good time to go through the process to get one setup so that you can better aquire the resources you need in the future instead of jumping through all the hoops from the start.