OKI C7350DTN User Manual
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C7350/7550 User’s Guide: Maintenance • 501 6.Using the handle (2), install the new fuser unit into the printer. Make sure the two spring loaded locking levers (1) lock the fuser unit into place. fuser unit replace.eps 7.Close the top cover. close top cover.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 502 Cleaning the LED heads Clean the LED heads when printing does not come out clearly, has white lines or when text is blurred. 1.Turn off the printer. 2.Open the top cover. open top cover.eps CAUTION! Do not use methyl alcohol or other solvents on the LED heads. These solvents damage the lens surface. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Maintenance • 503 3.Gently wipe the LED head surface with LED lens cleaner or soft tissue. LED head clean.eps 4.Close the top cover. close top cover.eps Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Moving (Shipping) the Printer • 504 Moving (Shipping) the Printer This printer is a precision machine. Moving the printer without the protective packaging may damage the printer. To prepare the printer for moving: 1.Turn off the printer. 2.Disconnect the power cable from the printer. 3.Disconnect the printer interface cable from the printer. 4.Remove any paper from the paper trays. 5.Open the top cover. Remove the four image drums. image drum remove 2.eps WARNING This printer weighs 106 lbs. (48 kg). Two people are required to lift the printer safely. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Moving (Shipping) the Printer • 505 6.Seal the aperture on each image drum and its toner cartridge with plastic adhesive tape (1). This prevents any toner from spilling during moving. image drum seal.eps 7.Place the four image drums (complete with their toner cartridges) back into the printer. 8.Use the original packaging materials that came with your printer. Place the printer inside its box and seal the box. WARNING This printer weighs 106 lbs. (48 kg). Two people are required to lift the printer safely. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 506 Troubleshooting Messages on Control (Front) Panel Display The control (front) panel has a liquid crystal display (LCD). The display indicates the printer status and if there is a problem with the printer. The messages (status and error) are listed below, together with an explanation of what each message means: List of Messages The messages are listed in alphabetical order. Display MessageMeaning 1 ***** DRUM NEAR LIFE An image drum is nearing the end of its life. (***** indicates color) 2***** EMPTY Warning that Tray ***** is empty. MP Tray is Tray 0. 3 ***** NEAR END The paper in the selected ***** is nearly finished. (***** indicates paper tray). 4***** TONER LOWToner is low (***** indicates color). 5 ***** TONER SENSOR ERRORError with the toner sensor (***** indicates color). Call for service. 6BELT UNIT MISSINGTransfer belt unit is missing. 7 CANCELLING JOBCancelling the current job. 8CENTRO I/F ERRORCentronics interface error (parallel interface). 9 CHANGE ***** IMAGE DRUMChange the image drum (***** indicates color). 10CHANGE BELT UNITChange the transfer belt. 11 CHANGE FUSER UNITChange the fuser unit. 12CHANGE PAPER TO *****Paper must be changed to correct paper size and/or media type. (***** indicates size or media type). 13 CHECK ***** Check Tray ***** for paper jam. MP tray is Tray 0. Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 507 14CHECK BELT UNITCheck the transfer belt for paper jam, correct installation, etc. 15 CHECK DUPLEXCheck the duplex unit for paper jam, correct installation, etc. 16CHECK FUSER UNITCheck the fuser unit for paper jam, correct installation, etc. 17 CHECK IMAGE DRUMCheck the image drum for correct installation, etc. Color is indicated. 18COLLATE FAILCollating of multiple copies has failed. 19 COLOR ADJUSTINGAdjusting head so that colors do not shift on to each other. 20COLOR BALANCE ADJUSTAdjust the color balance. 21 COMMUNICATION ERRORThere is an error with communications to computer. 22DATA ARRIVEData has been received, but processing has not started yet. 23 DATA PRESENTUnprinted data remains in buffer. Waiting for data to follow. 24DISK FILE OPERATION FA I L EDError with hard disk operations. 25 DISK FILESYSTEM IS FULLHard disk/flash memory full. 26DISK FULLThe internal hard drive is full. 27 E E P R O M I N I T I A L I Z E E R R O R Call for service. 28EMPTY Indicates which paper tray is empty. 29 ERROR POSTSCRIPTA PostScript error has occurred. 30FATAL ERRORCall for service. 31 FUSER UNIT MISSINGFuser unit is missing. 32INSTALL ADDITIONAL MEMORYAdditional memory is required before job can be printed. See “Memory (Additional)” on page 539. 33 INSTALL NEW IMAGE DRUMInstall a new image drum. Color is indicated. See “Changing the Image Drum” on page 491. 34INSTALL NEW TONERInstall a new toner cartridge. Color is indicated. Display MessageMeaning Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 508 35 INSTALL PAPER CASSETTEInstall the paper cassette. Paper tray is indicated. See “Loading Paper” on page 32. 36INVALID DATAData is incorrect. 37 LOADLoad correct paper size/type. Size/type is indicated. See “Loading Paper” on page 32. 38MEDIA MISMATCHPaper type set via menu does not match that sent via driver. 39 NETWORK ERRORNetwork error. 40OFFLINEShows offline status. 41 ONLINEShows online status. 42OPEN UPPER COVEROpen the upper cover. 43 PAPER JAMA paper jam has occurred. 44PAPER SIZE ERRORIndicates wrong paper size. 45 PLEASE POWER OFFPrinter must be turned off after disk/flash initialization. 46POWER SAVEThe printer is in power save mode. 47 PRINTINGData is being printed. 48PROCESSINGData is being processed. 49 RAM CHECKRAM is checked after printer is turned on. 50REGISTRATION ADJUST TESTRegistration adjustment being tested. 51 REGISTRATION ERRORAn error has occurred setting up the registration. 52REMOVE THE PAPERIndicates wrong paper being used. 53 SERVICE CALLA serious error has occurred Call for service. 54SHUTDOWNStarts the shutdown procedure to protect the file system on hard disk. 55 SIZE MISMATCHChange paper to correct size/type. Press On-line to continue. 56STACKER FULLStacker is full. Remove the paper. Display MessageMeaning Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 509 57 UNSUITABLE SIZEIndicates wrong paper size. 58USB I/F ERRORUSB interface error has occurred. 59 WARMING UPThe printer is warming up. Display MessageMeaning Downloaded From ManualsPrinter.com Manuals
C7350/7550 User’s Guide: Troubleshooting • 510 Repeating Asterisk (*) Symbol An asterisk (*) symbol appears on the display, repeatedly moving across the first line then the second. Possible causeRemedy The main board is not properly seated in the printer.Turn the printer off, then reseat the main board and turn the printer back on again. Downloaded From ManualsPrinter.com Manuals