Can't turn off sleep mode in hp 5520 printer

http://h30434.www3.hp.com/t5/Other-Printing-Questions/Sleep-mode-p3015-printer/td-p/2353489

My printer will not print after sitting for about 30 minutes. As soon as I turn it off and then back on the job I previously sent, prints out. I tried changing the amount of time before it goes to sleep but this does not correct it and does not seem to be related. You can hit the check mark to wake it up but it still will not print until turned off and then on. Source: How do you turn off the sleep mode in a HP 3600 printer?

This is the only solution is see and it didn't solve the problem

Disable sleep mode or update firmware. Cause this is a firmware bug.

Hi Brian,

The printer goes to sleep mode irrespective of what cartridge you have in the printer. Printer goes to sleep mode if the printer is not in use.

Regards,
Sean

Have you tried a cold re-boot on printer PC and router worth a try first then check all are on-line and communicating Can you use the PC without the Ethernet cable or a direct cable to the printer just to set it up (Re-set up).

Regards David, more info may help all the bests.
Ps. my old HP is a pig at time but I never have to use the cable which is a good job as I can never find the thing...

This may help some (22Jun2022): MFC-9840CDW using wi-fi option to connect, currently running on Windows 11 and for a long while, years even Windows 10, I too was constantly having a problem of this machine going into sleep mode and not coming out when wanting to print, the driver/firmware is the latest from the brother's support site for this model. The actual printer machine: no status light, says "Sleep" and the "menu key button" does not respond (need this key to respond). The PC, the brother printer icon does show in the control panel but do not have the "set as default printer" option. I assume in sleep or deep mode the PC does not see the actual printing device. In my case, Brother PC-Fax v.2.1 was selected and I could still scan a document to my PC. Fix action (need to turn off sleep mode on the printer itself): turn off printer (maybe wait 5 min, probably don't have to wait). turn printer back on, it cycles itself the status light on the printer should be green, at this point the printer should work as normal. But you should immediately turn off "sleep mode" because once it goes into sleep mode it no longer responds. Press the "Menu" key, enter "general setup" press "OK" button, arrow down to "ecology" (6) press "OK" button, select "Sleep Time" enter 000, press "OK" should respond with "accepted". After I did this, I currently have no status light and it still says "sleep" just like before. I just did this and it's been a couple of hours and I can print a test page whereas before I could not. And the icon in the control panel is as it should be, a check mark showing its the default printer. Hopefully, this is a permanent fix at least until I replace this printer.

If the printer is working normally, then it's probably just an automatic sleep mode that the printer goes into after a while to save power. If it's printing properly and works normally, then I'd advise just turning it off when you don't need to use it.

My printer will not print after sitting for about 30 minutes. As soon as I turn it off and then back on the job I previously sent, prints out. I tried changing the amount of time before it goes to sleep but this does not correct it and does not seem to be related. You can hit the check mark to wake it up but it still will not print until turned off and then on.

Your wireless printer might frequently lose its communication with the computer and hence might not print all the documents when you want. Such an issue arises when there is interference in the wireless signals between the printer and the computer. get more information for HP Wireless Printer Problems .Hope this helps you.

Hello

Please note: Instructions only applicable to the network printer which supports telnet protocol.
HP Mono and Color LaserJet Network Printers - Sleep Mode Problem
Issue
Network printers may not print when a job is sent to the printer while in sleep mode.
Solution
Please follow the steps below-
1. Connect the printer to telnet- Using command prompt.
2. Type telnet > IP address press then enter.
3. Type menu and press enter.
Following screen will appear-

4. Choose option 2 TCP/IP menu and press enter,
5. Choose option 5 TCP/IP other settings and press enter.
6. Type y in front of cursor and carry on pressing enter until you reach “SLP keep alive”. By default this value may be 0.
7. Change this value to 1.
8. Exit and save settings.

- Nikhil