Table 33. Accessory errors secondary codes C7058-90936 Troubleshooting with control-panel messages 191 Control-panel light patterns Accessory secondary error message Status log code Recommended action DIMM slot 1 incompatible error Turn the printer off. Reseat DIMM in slot 1. Turn the printer on. If the problem persists, replace DIMM in slot 1. Replace the formatter. DIMM slot 2 incompatible error Turn the printer off. Reseat DIMM in slot 2. Turn the printer on. If the problem persists, replace DIMM in slot 2. Replace the formatter.