C o n t r o l P a n e l M e s s a g e s6-16 ❖ D o c u P r i n t 4 5 1 2 / 4 5 1 2 N U s e r G u i d eEV The Envelope Tray is loaded with envelopes.Media status is indicated in the display as UPPER/LOWER, indicating status ofupper tray and lower tray. For example: EV/PO indicates that the upper tray isloaded with envelopes and the lower tray is out of paper.The On Line light remains on.ACTION: None.Interface Error Improper signals have been received through the serial interface, most likely when thecomputer is powering up or down. The Error light remains on.ACTION: Press the On Line key. If trouble recurs, check cable connections, computerand printer settings. Also, try reseating the interface board into thecontroller board.LE A paper tray is loaded with letter-sized paper.Media status is indicated in the display as UPPER/LOWER, indicating status ofupper tray and lower tray. For example: LE/PO indicates that the upper tray isloaded with letter-sized paper and the lower tray is out of paper.The On Line light remains on.ACTION: None.LL A paper tray is loaded with legal-sized paper.Media status is indicated in the display as UPPER/LOWER, indicating status ofupper tray and lower tray. For example: LL/PO indicates that the upper tray isloaded with legal-sized paper and the lower tray is out of paper.The On Line light remains on.ACTION: None.Paper OutPaper Out UpperPaper Out LowerPaper has run out or paper tray is removed. The Error light flashes.ACTION: Re-install the tray(s). If the tray in use is empty, refill it. Do not overfill.Paper Jam Paper is stuck in the print path. The Error light remains on.ACTION: Clear the misfeed according to the section “Paper Jams” (page 6-19).Table 6.3 Control Panel messages (continued)Message Description/Corrective ActionTable 6.3 Page 2 of 3