HP CM3530 - Manual (Page 200)

2. Disconnect all power and interface cables.
NOTE: This illustration might not show all the cables.
3. Locate the thumb screws on the formatter board in the rear of the product.
4. Unscrew the thumb screws and then pull the formatter board from the product. Place the formatter
board on a clean, flat, grounded surface.
186 Chapter 13 Manage and maintain the product ENWW