06-24-2015 08:07 PM
My MX850 throws the b200 error as soon as its powered on--some of the fixes I've seen won't work because the printer won't do anything once the error comes up. If the printhead is taken out, the printer gets a little further and tells me to put the printhead back in, but gives b200 as soon as I do.
Printhead has been thouroughly cleaned several times.
Does this point to a bad printhead? This multi-function printer cost about $300 new, so buying a $100 printhead makes sense, but only if that fixes the problem.
08-03-2015 07:19 PM
This 'B200' problem made me think about electrolytic capacitors that went dry & lost their mfd. This could cause a power supply glitch and crash the logic when a motor switches on, thus making a B200 error for 'unexplained cause'. I had a couple Sony VCRs that went gradually kaput due to a bad batch of electrolytics, and this could explain why a number of different Canon models suffered B200 errors with various 'cures'..
I'm not in a situation at present to test this hypothesis, so I wonder if someone among you might like to open a stricken printer (without ax or chainsaw) & hang a large capacitor on the power bus, maybe look at the circuit with a 'scope and then report to us.
I stand ready for info at syncronic78 à gmail.com.
08-29-2015 09:45 PM
I switched from Canon ink for the MX850 about 1/2 yr. ago. Had this printer for many years with no problems. Now today the B200 error. I've been using cheaper LD ink cartriges. Is there any possibility that using this cheaper ink ruined my printer head? Has anyone else had this experience?
09-13-2015 07:35 PM - edited 09-13-2015 08:53 PM
Thank you! This worked like a charm.
EDITED: Sorry. I'm new to the board. I thought I was replying to the individual post that helped me. I hadn't realized it would drop to the end of the thread.
bebebeck posted the following in March of 2014:
03-17-2014 11:15 AM
Here's a fix that worked for me:
1. Turn OFF Power
2. Open the print head bay (as though you were about to change inks)
3. Turn ON power
4. Wait for print carriage to start moving to the left and let it go past half way
5. Before print carriage reaches left hand side (but after going halfway across) shut the cover.
6. Leave the Printer turned on
7. Good to go.