Greetings,
The 634Cdw is a laser printer. It uses toner. Note which toner the printer indicates as low.
Then, power the printer off, open the front cover and slide the toner drawer (carrier) out.
Carefully remove the toner that printer reports as low. Hold horizontally. Go outside, as this can be messy. Carefully shake the toner side to side for 15~30 secs. Now reinsert it. Close carrier, front panel and power on. If there is still toner available, you should be able to print again until its depleted.... time to buy more toner.
If it still states low or depleted, the toner cartridge is either empty or there is another issue.
~Rick
Bay Area - CA
~R5 C (1.0.6.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, +RF 1.4x TC, +Canon Control Ring, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve ~Windows11 Pro ~ImageClass MF644Cdw/MF656Cdw ~Pixel 8
~CarePaks Are Worth It
