Hello and welcome to JustAnswer, I look forward to assisting you today. Feel free to disregard the Premium Service Offer for Remote Support. That is an automated popup initiated by the web site. There is a good possibility the heads need to be cleaned. Have you had it serviced recently?
Is the model an XR or ZR850?
You could try a head cleaning tape first. It might be a little cheaper?
Give me a minute and I will send you a link to where you can purchase one.
Check this LINK. You can purchase one from Amazon.