Brothers DCPL2550DW and Deep Sleep

Quick Summary

You've got a fancy new Brothers DCPL2550DW printer for the office. It connects to wireless just fine, you're able to add it to Windows, you're able to print from your iPhone via AirPrint, and... it just stops responding. You walk over, reset the printer, everything is great again, and... it stops responding again. I went through all types of wireless and mDNS troubleshooting before finding the answer.

Meet Deep Sleep

Here's the thing: I swear this used to work just fine. I'm guessing these issues are related to a firmware update that was applied a few months back. Unfortunately, the deep sleep function is a bit too aggressive since a wireless connection to the printer doesn't wake it back up. Here's how you disable deep sleep:

1. Click the Menu button.
2. Click the OK  button while on 1. General Setup which should be the first option.
3. Click the Down/Minus button once to get to 2. Ecology and click the OK button.
4. Click the Down/Minus button twice to get to 3. Sleep Time and click the OK button. It'll say 1 Minues by default.
5. Click the Down/Minus button at the same time as the Stop/Exit button. It will now display Deep Sleep on the LCD.
6. Change it to Off and click OK.
7. Unplug the printer and plug it back in.

At that point you should be good to go. I have no idea how this was missed by Brothers QA since it's a pain to deal with.