B930n User’s Guide> 118Black Prints - The entireprinted page is black.1. The drum cartridgemay be defective.2. Printable data from thecomputer may becorrupted.1. Replace the drumcartridge.2. Print a ConfigurationPage.- If the ConfigurationPage prints correctly,check the interface cablebetween the computerand the printer, and theapplication software.- If the connectionsappear normal, contacttechnical support.Horizontal Line Deletions -There are areas of printdeletions that appear acrossthe paper.1. The drum cartridgemay not be installedcorrectly.2. The drum cartridgemay be defective or atthe end of its life.3. The transfer roller maybe defective.1. Remove and re-installthe drum cartridge.2. Replace the drumcartridge.3. Replace the transferroller (in themaintenance kit).Vertical Line Deletions - Thereare areas of print deletionsthat form narrow lines.1. The paper may bedefective with creases,folds, etc.2. The drum cartridgemay be defective or atthe end of its life.3. The transfer roller maybe defective.1. Replace the paper.2. Replace the drumcartridge.3. Replace the transferroller (in themaintenance kit).SYMPTOM CAUSES SOLUTIONS