450 Troubleshooting GuideFILE LOCATION: C:\Users\fxstdpc-admin\Desktop\0630_UG??\Mioga_SFP_UG_FM\Mioga_SFP_UG_FM\section28.fmD E L L C O N F I D E N T I A L – P R E L I M I N A RY 9 / 1 3 / 1 0 - F O R P R O O F O N LYJagged charactersAction Yes No1 If the printer is installed in a high altitudelocation, set the altitude of the location.a Launch the Tool Box, and click AdjustAltitude on the Printer Maintenance tab.b Select the value close to the altitude of thelocation where the printer is installed.Does this solve your problem?The task iscomplete.Go to action 2.2 Replace the PHD unit if you have a spare unit.See "Replacing the Print Head Device (PHD) Unit "and "Installing a PHD Unit ."Does this solve your problem?The task iscomplete.Contact Dell.