How to Fix a Blocked Canon PRO-1000 Printer with Support Code B204 

When turning on your Canon PRO-1000 printer, you may encounter the error message with support code B204. This error can prevent access to the menus and cause frustration. Some recommend removing the print head, cleaning the contacts, and reinstalling it, but the print head is hidden inside the printer case and may not be easily accessible. 

One possible solution is to hold the Resume button for 10-30 seconds and then press the On button. You can also try this while the top lid is open. However, if you manage to get the printer to respond, you will need to pull the plug once the print head moves slightly. 

If you are not confident in disassembling your PRO-1000 printer, it may be best to return it to a Canon Service Centre. The cost of the repair will depend on whether the print head needs to be replaced. A Canon service center may be able to give you a rough estimate of the cost before you proceed. 

Another option is to consider getting a new printer, which may be more economical in the long run. You may also get a discount if you purchase from the Canon website and have it delivered to your door. 

Regardless of which route you choose, it is important to handle the printer with care, as there is a risk of spilling ink if not moved properly. If you have any concerns or questions, it may be best to reach out to Canon for further assistance.