imageCLASS MF753Cdw won't wake up from sleep mode without power cycle

[gltstech]

Greetings all... I work for a small MSP and we currently sell the Canon MF753cdw. We have been seeing at a few offices this printer not being able to recover from sleep. We have disabled or extended every option for sleep or low power that we can find and even tried setting up a wakeup within the UI for 6am. When the staff arrives in the morning and they try to print, nothing happens. They tap the display and it just says "Waiting to print" in the bottom left corner. If they power cycle it starts working. Latest firmware is installed at first setup (most recent printer installed just a month or so ago), they are connected to the network via ethernet, and the latest drivers are installed on the PCs (all running up-to-date Win11 Pro). We use Ubiquiti network hardware so if we get in to our Unifi Dream Machine SE and look at the connected devices the Canon will not be there. It will appear after power cycling. The most recent troubleshooting step was to restart the small Unifi Flex Mini 5-port switch that its connected to (without restarting the printer itself) and that woke it up. The Flex Mini is a new addition too as it was installed to replace the original switch thinking that may have been a cause. Even when it won't print there is network activity (activity lights blinking) on both the printer side and the switch, and with the Flex Mini we can see that its connected... and yet nothing prints until something is done to the network connection. The only thing we have not tried is connecting via WiFi, but since we don't want to use WiFi its would be more of a curiosity than a solution. We have dozens of these in the field and its happening on just a few so I'm thinking some issue with internal NIC. Thoughts?

[shadowsports]

Greetings ,

This is probably unrelated, but these devices have a static IP set, correct?

I would expect the ARP table on the ubiquiti equipment to be more than adequate to handle this so I wonder if a alternate port setting might help.

The 751's and 753's have been known to exhibit this behavior with some network equipment

[DerrickL]

I think Rick is on to something, Ubiquiti network support mentioned static ips for devices that randomly go offline is recommended. 

[gltstech]

Yes, it is set statically in the device itself but we have not tried setting it in within Unifi via reservation. I can try that.

[gltstech]

I take it back... perhaps a coworker already set it in Unifi. So, we have it set in the machine as well as reserved by the UDM. Not sure when that was set but we will see by morning if it goes offline again.

[JonMartin]

I have a very similar issue and have a few things to add:

1. Sending a continuous ping to the printer will keep it from going off network.  Pinging it after going off network does not wake it or get a response.
2. Unplugging the ethernet cable and Replugging will wake the network.
3. Power cycle will wake the network

Details for those who need them:

• Canon imageCLASS MF733Cdw
• Unifi network
• Static IP
• Wired Ethernet (Wi-Fi off)
• Firmware is up to date
• I have disabled or extended every option for sleep or low power that I can find
• Printer control panel is responsive but I have not found anything that wakes the network from the panel

[chrisfkell]

+1 to keep alive with the addition of just stating clearly nothing works when off network, including the remote UI, while in sleep, and when manually woken from sleep without performing one of the actions stated above.

I am using the exact stack and have the exact same presentation of issues.