What does 'Error 1' on a Canon 287 printer typically indicate?

'Error 1' on a Canon 287 (or similar Canon inkjet printer) is a service error that generally points to an issue with the paper feed mechanism or a general internal fault. It can be caused by paper jams that were not fully cleared, obstructions in the paper path, a faulty paper sensor, or a problem with the feed rollers. In essence, the printer is detecting an inability to properly move paper through its system.