xiv Phaser 7700 Color Laser Printer Service ManualWindows Printing Problems .......................................................................... 3-104Troubleshooting Network Problems .............................................................. 3-105Media Jams and the Paper Path ........................................................................... 3-106Media-based Problems .................................................................................. 3-106Multiple-sheet Pick ........................................................................................ 3-106Mis-pick ........................................................................................................ 3-106Skewed Image ............................................................................................... 3-106Damaged Prints ............................................................................................. 3-107Fuser Jams .................................................................................................... 3-107Exit Jams ....................................................................................................... 3-107Print Image Quality Problems ............................................................................... 3-108Light (undertone) Prints (all colors) .............................................................. 3-108Blank Prints ................................................................................................... 3-108One Color is Faded or Missing ...................................................................... 3-109Missing Band in Direction of Paper Travel ..................................................... 3-110Streaks in Direction of Paper Travel .............................................................. 3-111Streaks Parallel with the Leading Edge .......................................................... 3-112Random Missing Spots ................................................................................. 3-113Random Spotting ......................................................................................... 3-113Single Color ................................................................................................... 3-113All Colors ....................................................................................................... 3-114Repetitive Mark Appears on Each Print ......................................................... 3-114Background Contamination ........................................................................... 3-115Unfused Image or Image Easily Rubs Off of Page ......................................... 3-116Toner on Back of Print ................................................................................... 3-117Print is Mottled .............................................................................................. 3-118Image Mis-registered on Paper ..................................................................... 3-119Residual Image or Ghosting .......................................................................... 3-120Light Bands, Dark Bands, or Mottled Prints .................................................. 3-121Adjustments and Calibration 4-123Internal Hard Drive 4-123Registration Control (RegiCon) Adjustment Overview .......................................... 4-124Coarse RegiCon Initialization ......................................................................... 4-124Coarse and Fine Skew Adjustments ............................................................... 4-125In/Out Skew Adjustment ................................................................................ 4-125Center Skew Adjustment ............................................................................... 4-126Processes of the RegiCon Adjustment .................................................................. 4-127Check Print-quality ........................................................................................ 4-127Preparation for RegiCon ................................................................................ 4-127Registration Control Procedures .......................................................................... 4-130RegiCon Flowchart ........................................................................................ 4-133Step 1: Belt Edge Learn ................................................................................. 4-134
