I recently had the experience of the 3315 failing to power on. Looked on here and found this solution worked. Thought I'd post it under the 3315 title for those searching:
In case the link doesn't work, it's pretty simple:
1) Power Off
2) Unplug Power
3) Wait 30 Seconds
4) Plug Back In
5) Power On
Hi molimelight,Thank you for using the Xerox forum.
You obviously realize that on this forum we depend on each other for known solutions.
It is great that you were able to share this.