I'm having the following issue with my 1536dnf: when I power it on, it makes the usual noises, but the display doesn't activate. No messages, nothing. I've done a firmware reset (but it doesn't respond when I attempt to do another), cycled power, unplugged and replugged after waiting, etc.
I just successfully tested the print engine by opening and closing the toner cartridge door in the correct sequence. I can't find any troubleshooting steps that include my issue, or any repair instructions for fixing it. Does anybody have any ideas?