SOURCE: Alarm light flashes; lcd toner low. But it's not!
I found this in an online forum:
"Chip on the cartridge MUST be replaced with new one."
Sounds like the MF5700 series operating system won't recognize a refilled cartridge that does not contain a new microchip.
Anyone know if this is true - and if so, any workarounds?
SOURCE: Canon image class MF 4150: it is flashing, message
If you removed and reinstalled toner correctly several times and this error code is flashing, you need to try another new toner cartridge, even though the other one may seem still good to you. If this doesn't remedy problem the Troubleshooting section of the Canonusa.com website says to call 1-800-OK-CANON.
SOURCE: canon imageclass mf 6530 blank pages change toners
Hi,
you have problem with laser shuter on laser unit. It needs to be fixed or replaced.
This is canons factory fault, and if the machine is under waranty call service.
Hope that helped!
SOURCE: Canon ImageClass MF 6550 Error Toner Low- Prepare New Toner
There are two contact on the right wall off the printer cartridge chamber area. They can get pushed in causing the printer cartridge to not read correctly. Take a small Flathead screwdriver and bend them up so the cartridge ink level can be read.
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