imageCLASS MF665Cdw- Power Save On / OFF

[balanced123]

Hello Canon,

  After a few hours of messing with my nephew's birthday present, a Canon MF665CDW, I came to make this easier to find.
https://oip.manual.canon/USRMA-9960-zz-SSM-660-enUS/contents/devu-set_menu_list-pref-nw-wlesslan.htm...

[Power Save Mode]

[Menu]   [Preferences]   [Network]   [Wi-Fi Settings]   [Connection Set.]

When enabled, this mode will shut Wi-Fi connection off automatically to save power.
Terrible design default when the default connection is Wi-Fi - the user must first physically wake up the printer.
!!! Notice !!!

On the bottom of the Wi-Fi Settings menu, is the [Connection Set] button.

[shadowsports]

Greetings,

I have 2 Canon lasers running on two different networks.  I made no changes to the power management settings on either device.  Both sleep after 60 secs and both wake when a device connected to the same network sends/initiates a print job.  No user intervention is required.  

Based on your description, I suspect the issue is with your network configuration.

I'd like to make the following suggestions. 1. Assign or reserve a static IP for the printer on your router.  2. Install the printer as a TCP/IP device on your PC(s).  This applies to Windows, MAC and to mobile devices if you're using the Canon print app.  Relying on DHCP, Host name resolution or the ARP table on consumer networking equipment can be unreliable.  If you have any questions, please let us know.  😉

[balanced123]

Oh - I posted the solution
I disabled Power Save Mode

Now the printer is always connected to the WLAN.

[jwfox54]

Thank you. I have the exact same printer with the exact same failure. The printer loses it's network connection overnight. This was happening every night. I called Canon support twice. They could not fix the problem. In fact, they sent me a warranty replacement printer. It exhibited the same failure.

I followed the steps in your post and set the power save mode to off. I expect this will fix the issue. The real test will be tomorrow morning. I'll post a follow up here.

[jwfox54]

Thanks for your help with this issue. I set a static IP address in my Asus router. It didn't help. I set the WiFi power save mode to off as noted by balanced123. I expect that will fix the issue.

However, I was doing more digging into this and noted the following description for power save mode in the WiFi Settings section of the online manual "Specify whether to periodically set the machine to Power Save Mode according to signals sent from the wireless LAN router." I did some research on what the signal from the router is. On Asus routers it is called WMM APSD. I found the setting on my router. It was set to enable. I am leaving it enabled because it helps with power usage on battery powered devices. 

Hope this helps if you run into this issue again in the future.

[jwfox54]

Just to close the loop on this, turning off WiFi power save fixed the issue.