Oftentimes when an ice maker is not producing enough ice, or is not producing quality ice it is an indication that the ice maker requires cleaning and/or maintenance.
Please refer to the help article How do I clean my EdgeStar model IB450SS or IB650SS Ice Maker? for information and instructions.
While the above referenced article refers specifically to the EdgeStar ice maker models IB450SS/SSP and IB650SS, the content contained within the article is useful information for general instruction for cleaning of all brands and types of ice makers.