Table of Contents-vi Xerox WorkCentre Pro 421 User GuideCalling for Service.................................................................................6-6Displaying Error Codes ...........................................................................6-6Customer Support Telephone Number ...................................................6-6Error Messages and Codes..................................................................6-7Error Messages.......................................................................................6-7Error Codes.............................................................................................6-9Image Quality Problems .....................................................................6-127 Machine Defaults & Setups.............................................. 7-1Changing Machine Defaults .................................................................7-2Paper Trays.............................................................................................7-3Timers .....................................................................................................7-5Interrupt Key............................................................................................7-9Speaker Volume....................................................................................7-10Department Codes ................................................................................7-11Printing Reports ..................................................................................7-19Department Code Report ......................................................................7-20Settings Report .....................................................................................7-21Changing the Initial Setup..................................................................7-23Date & Time ..........................................................................................7-24Localization ...........................................................................................7-28Language ..............................................................................................7-29Machine Serial Number.........................................................................7-30Customer Support .................................................................................7-31Network .................................................................................................7-33Menu Map.............................................................................................7-34Self Test ...............................................................................................7-35Automatic Test ......................................................................................7-35Individual Test .......................................................................................7-36Print Test Result....................................................................................7-37Customer Support Number ................................................................7-38Machine Serial Number ......................................................................7-39Xerox Supply Number.........................................................................7-40Total Print Counter..............................................................................7-41Machine Revisions..............................................................................7-42