This article contains the Troubleshooting Guide for the QB900 Series Ninja® Master Prep® Professional. This supports the following SKUs: QB1000, QB1000C, QB1000CG, QB1002, QB1003, QB1004, QB1004BRN, QB1004C, QB1004CO, QB1004CW, QB1004MC, QB1004Q, QB1004W, QB1005, QB1005Q and QB1007Q.