There was a bulletin, many moons ago,

Adjust the following settings:

[Admin Mode] > [System Setting] > "Power Supply / Power Save Settings" :

1) On page 1 - Touch "Enter Power Save Mode" - and select "Normal"
2) On page 2 - Touch "Power Consumption in Sleep Mode" - and select "Disabled"

I have always set up every machine with these settings. This was because machines weren't "waking up"