Have a canon 2050p fax machine. It wants to take

Your rollers will need to be replaces. Rollers feed the paper through the tray. You can find paper feed rollers for your device here:

http://www.precisionroller.com/paper-feed-components-for-canon-laser-class-2050p/products.html

They are very straight forward to install and instructions should be in your manual.

try a new cartridge

If you have an handset on right side of tel. handle you have a little black "nose" try to move it and see if it works

Yes. Here is a link to your Canon Laser Class 2050P fax machine's User Guide. Reference pages 5-1 through 5-28 for Speed Dialing, One-Tuoch Dialing, and Group Dialing. Speed Dialing must be set up before Group Dialing can be assigned. Group Dialing will accomplish the multiple recipients sending.
http://www.actcopiers.com/Manuals/Canon_Laser_Class_2050P_User_Manual.pdf

Is it possible that you have an LC 2050P instead of an LC 2050?? HH7-2424-000 contact sensor belongs to both 2050 / 2060 LC fax machines, however, HH7-2520-000 belongs to an LC 2050P fax machine. Perhaps that is the difference, or am I missing an update? Let me know which model you have please.

that is a heater error. the fuser asm. that melts your toner on to your paper. it is not coming up to temp. in time.
sorry to say the only way is to replase it. if you go on the internet googal canon 2050p fuser you can order one
C.W.H.

check cover has to do with the door.
either the switch is not being activated or there is a problem with the door

there are a couple of things did you buy genuine or reman cartridges and check if they are seated properly.
some remans dont work properly so you have to be sure and always get a money back guarantee from the seller

You will have to go through the Data registration and scroll through the settings until you see "date/time" setup. Don't forget to press the "set" button after you have set the time.

Two things: Can you make a copy without this happening? And, Does this happen with certain specific fax number or randomly?