[. . . ] Double-sided printing: load face down with top edge away from the printer. Provides straight-through, curl-free print path for transparencies, envelopes, labels and heavy paper. Sheets exit face up (for multi-page documents, select reverse order printing in your application Print dialog box). Always make sure the media setting matches the print media you are using. [. . . ] If you are printing a job on special media, you can temporarily load the media in a tray and change the media settings for that tray in the driver as you print the job. Media weight settings can be made in the printer menu or the printer driver. Press + repeatedly until the second line of the display shows the Value (Light, Medium, or Heavy [see page 14]) you wish to use. Media Size = Letter The setting is engaged and the second line of the display stops blinking. Envelopes: If you are setting the MP Tray for envelopes, press ON LINE and you are done. Heavy paper / labels: If you are setting the MP Tray for heavy paper or labels, keep going. Press + repeatedly until your choice of CARD STOCK or LABELS appears on the second line of the display. The setting is engaged and the second line of the display stops blinking. Press Press + repeatedly until the second line of the display shows the Value (for envelopes, select COM-10 ENVELOPE) you wish to use. If you wil be printing banners, it is recommended that you purchase and install the optional 64 MB DIMM (Oki 70057501). Appears on the second line of the display to indicate that the item specified will soon need to be replaced. Note If you have changed the LOW TONER item in the SYSTEM CONFIG MENU to STOP, the ATTENTION light will blink and you must either replace the toner cartridge immediately or press the ON LINE button to continue printing. What to Do Be sure you have a genuine BARTSCHER replacement toner cartridge or image drum on hand (see page 6). What to Do Remove the toner cartridge and replace it with a genuine BARTSCHER Toner Cartridge (see page 6). What to Do Replace the toner with a genuine BARTSCHER Toner Cartridge (see page 6). Appears on the second line of the display to indicate that the media in tray t is almost out. What to Do Load more media in the tray before printing any large print jobs from that tray. Install additional memory in the printer (see your on-line User's Guide for more information). Note If the message still appears, push the blue latches at either end of the fuser back (toward the printer cover hinge) and lift the fuser out, then lower it back into the printer, pushing it firmly down in place. The printer has received a job for printing from the Multi-Purpose Tray and no media is loaded in the tray. [. . . ] The printer has received a job for printing from the Multi-Purpose Tray and no media is loaded in the tray. What to Do Load the requested media (xxx) in the Multi-Purpose Tray, then press ON LINE. The hard disk drive is not available and job spooling cannot take place. The Job Accounting software has detected a print job from a user who is either · not authorized to print or · Trying to print a color job and only authorized to print black and white jobs. [. . . ]