10.3 < Troubleshooting>5 Lowering down the scan unit gently and slowly until it is completelyclosed. The inner cover will be closed automatically by the scanunit closing.Be careful not to pinch your fingers!If there is any resistance and the paper does not move when youpull or if you cannot see the paper under the scan unit, continue tothe next step.6 Open the rear cover.7 If you see the jammed paper, pull it straight up.8 Close the rear cover. Printing automatically resumes.Understanding display messagesMessages appear on the control panel display to indicate the machine’sstatus or errors. Refer to the tables below to understand the messages’meaning and correct the problem if necessary. Messages and theirmeanings are listed in alphabetical order.TipWhen you call for service, it is very convenient to tell the servicerepresentative the display message.Message Meaning Suggested solutionsToner Empty The color tonercartridge has runout. The machinestops printing. Thearrow indicateswhich color tonercartridge.Replace the colortoner cartridge with anew one. See page9.5Toner Low The correspondingcolor toner cartridgeis almost empty. Thearrow indicateswhich color tonercartridge.Take out the tonercartridge andthoroughly shake it.By doing this, you cantemporarilyreestablish printingoperations.TonerSupply Err. The machinereceived severalpapers with manyimages, and it cannot supply the tonerproperly. The arrowindicates which colortoner cartridge.Unplug the powercord and plug it backin. If the problempersists, please callfor service.Data Read FailCheck USB Mem.Time expired whilereading data.Try again.Data Write FailCheck USB Mem.Storing to the USBmemory failed.Check the availableUSB memory space.Door Open The front cover orrear cover is notsecurely latched.Close the cover until itlocks into place.File FormatNot SupportedThe selected fileformat is notsupported.Use the correct fileformat.Fuser FanLockedThere is a problemin the cooling fan ofthe machine.Open and then closethe front cover.