Hello!
Welcome to the Canon Community!
I'm sorry to hear that your scanner is giving you a hard time. We always recommend leaving repairs to the professionals, just in case anything goes wrong, however, if you're comfortable taking your scanner apart and re-assembling it, have at it! You'll find repair resources at https://canon.us/repair
Obligatory disclaimer:
Genuine Canon replacement service parts, including inkjet printer print heads, are available for purchase by calling the Canon Parts Order Desk at (866) 481-2569. If you require information regarding self-service repair, please call (877) 982-2666. Please note that for both product safety and optimal product operation, Canon recommends that most repairs be performed by a Canon authorized service technician.
