3-62 Phaser 4400 Laser Printer Service ManualHorizontal Deletions Troubleshooting ProcedureStep Actions and Questions Yes No1 1. Enter Service Diagnostics and select Engine TestPrint.2. Scroll to Print Quantity and press OK.3. Select 5, then press OK.4. Scroll to Print Test Pattern and press OK.Do the prints have horizontal deletions?Go to step 3. Go to step 2.2 1. Exit Service Diagnostics.2. When the printer has restarted, select PrintablePages Menu.3. Scroll to Print Configuration Pages and press OK.Do the prints have horizontal deletions?Remove andreseat theImageProcessorBoard. If theproblemspersist,replace theImageProcessorBoard (RRP9.2 onpage 6-88).The problemappears tobe with thehostcomputer orthe cables. Ifthe problemspersist,replace theImageProcessorBoard (RRP9.2 onpage 6-88).3 1. Load fresh, dry paper.2. Print a test print.Is the problem still present?Go to step 4. Problemsolved.4 1. Install a new Print Cartridge.2. Print a test print.Is the problem still present?Go to step 5. Problemsolved.5 Inspect the Transfer Roller Assembly for contaminationand wear.Is the Transfer Roller free of contamination andwear?Go to step 6. Replace theTransferRollerAssembly(RRP 7.1 onpage 6-79).6 1. Select the Printable Pages Menu, scroll to Print TestPrints, and press OK.2. Switch OFF the printer power halfway through theprint cycle.3. Carefully remove the Print Cartridge and inspect thetoner image on the drum just before the transfer area(Transfer Roller).Is the image on the drum completely developedwith sharp, black, easy-to-read areas and nohorizontal deletions?Go to step 7. Go toHigh-VoltagePowerSupply(HVPS)Assembly onpage 3-31.7 Inspect the toner image on the drum immediately afterthe transfer area (Transfer Roller).Was the toner image on the drum transferred tothe paper?Go to step 8. Go toHigh-VoltagePowerSupply(HVPS)Assembly onpage 3-31.
