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if there is anyone online help

hi guys am new here i need ur help
i removed my cartridge from my laser jet pro MFP M28a for something like 10minutes coz i wanted to take it so as they laod for me ink on reaching they were like they cant coz it might have gotten spoit due to exposure to air and light .
is it right or is there any way of fixing it jst in case its spoit. am really confused on what to do i need ur help coz its not mine

I'm trying to revive a Canon Pro 1 with the B200 error like you had. I've removed the top but am stuck trying figure how to release the print head or even where the view in the picture below is located. Even if I am able to free the print head, how do you clear the B200 error?

Open to your suggestions,

Thanks,

Reid

hello, did you manage to solve the problem in your p400? with error 0x44? thanks for any info!

Hello. Post your email address here (not in the forum). I’ll send you a service manual.
I am Ukrainian and I translate in English as a translator.