The functions are: U01 ..Changing cartridge U02 ..Aligning the ink cartridges U03 ..Setting paper size U04 ..Ink nozzle self test/cleaning NOTE: During any Menu operation, if you do not take any action (press any buttons) for one minute, the machine will return to standby mode. The Display will then show 001 . Changing Ink Cartridges Press the Menu button until you see the code Aligning Ink Cartridges earlier in this section or Section 5 Maintenance/Replacing Ink Cartridges for details. U01 . See Installing & Aligning Ink Cartridges Press the Menu button repeatedly until you see the code Installing & Aligning Ink Cartridges earlier in this section or Section 5 Maintenance/Aligning Ink Cartridges for details. U02 . See Getting Started Setting Paper Size Using the Control Panel You can load A4, letter or legal-sized paper. Your WorkCentre is preset to letter size. If you load A4 or legal-sized paper, you must set the machine to the correct paper size. 1 Press the Menu button on the Control Panel repeatedly until U03 is shown in the Display. 2 Press Start. P01 is displayed (letter size). 3 If necessary, press one of the Scroll buttons to choose either P03 P02 for A4 paper or for legal-sized paper. 4 Press Start to confirm the new setting. Display Paper Size P01 Letter P02 A4 P03 Legal Testing the Print Nozzles Press the Menu button repeatedly until you see the code Section 5 Maintenance/Clean Print Head Procedure for details. U04 . See 18 Getting Started Paper Guidelines When selecting or loading paper, envelopes or other special media, keep these guidelines in mind: . Attempting to print on damp, curled, wrinkled or torn paper can cause paper jams and poor print quality. . Use only high quality, inkjet-grade paper. Avoid paper with embossed lettering, perforations or texture that is too smooth or rough. . Store paper in its ream wrapper until ready to use. Place cartons on pallets or shelves, not on the floor. Do not place heavy objects on top of the paper, whether it is packaged or unpackaged. Keep it away from moisture, or other conditions that can cause it to wrinkle or curl. . Moisture-proof wrap (any plastic container or bag) should be used during storage to prevent dust and moisture from contaminating your paper. . Always use paper and other media that conform to those listed under Specifications in the Appendix. . Use only well constructed envelopes with sharp, well creased folds. DO NOT use envelopes with clasps and snaps. DO NOT use envelopes with windows, coated linings, self-stick adhesives or other synthetic materials. DO NOT use damaged or poorly made envelopes. Getting Started Paper Selection One of the most important things you can do to assure the best possible printing performance of your machine is to select the correct paper. Your machine produces letter quality print on most plain bond papers, including cotton bond and photocopying papers; it does not require special ink jet papers....