Lexmark C73/X73x and C74x/X74x Potential Field Concerns
Contents
1. Tray Missing Problem Description False Load Tray Tray empty and Tray Missing messages Most Likely Cause Broken pick arm assembly or the flag on the pick arm assembly Resolution e Check the tray and paper loaded for potential problems e Reseat the Tray and Pick connectors on the system board e Replace the Autocomp For Training Use Only Unable to Open Top Access Door Broken Spring Problem Description The Top Access Door cannot be opened Most Likely Cause Broken plastic hook that secures the tension spring Resolution e See the Service Manual for the procedure to open a stuck Top Cover Access Door e Replace the tension Springs See the Instructions Left Side Spring Replacement on and Right Side Spring Replacement in the Service Manual Make sure to order and replace the correct springs For Training Use Only 32 37 Unsupported Cartridge Problem Description The printer Operator Panel displays 32 37 Unsupported Cartridge Most Likely Cause The customer installed a starter cartridge from a different C73x X73x or C74x X74x printer Resolution Shipped with toner cartridges starter cartridges can only be used in the printer with which they were delivered Install the original starter cartridge that shipped with the printer or a new supported aftermarket cartridge Background e Once a printer reaches a toner low condition with the original set of shipped with cartridges it can never ac2. end of life photoconductor The PC units are consumable wear items that must be replaced at regular intervals e The printer will post an 84 31 or 84 34 message code informing the customer that the PC units need to be replaced e Since the PC units don t have any memory or chips the customer must manually reset the PC units in the Menus If however the customer resets the PC unit s without actually replacing them you will eventually see the defect pictured below Resolution The customer should order the photoconductors and replace the units For Training Use Only Front Door Locked Front Door will Not Open Problem Description The front door is locked by the Top Cover Camshaft and cannot be opened Most Likely Cause e The door locks during certain Busy events and unlocks when those events are complete This is a normal function You can actually feel the door lock as one of these events takes place e If however the printer is powered off or posts an error during the event where door is locked the printer can t complete its event cycle The front door therefore stays locked and will not open e The most common events that trigger the door to lock include Calibration Printing Resolution e Power the machine off if not already e Wait for 15 seconds and power the printer back on e Wait until Ready displays on the operator panel and then try to open the door e Ifthe printer was in
3. 1 ih For Training Use Only Broken ADF Hinge MFP Only Problem Description The ADF hinge is broken the ADF door is hard to open close or the ADF door makes a cracking sound as it is opened Most Likely Cause The ADF hinge is broken The left breaks more often than the right Resolution e Replace the broken hinge e Perform the Scanner Manual Registration For Training Use Only Sharp lines on Page after Scanning from ADF MFP Only Problem Description Fine vertical lines on the page after scanning from the ADF Most Likely Cause Debris on the ADF glass Resolution Clean the scanner glass as well as the ADF glass 1 White underside ADF cover 2 White underside scanner glass cover 3 Scanneralass 77 4 ADF lass For Training Use Only Solid 100 Coverage of C M Y and or K on the Page Problem Description A printed page is 100 saturated with C M Y and or K color While it is possible for multiple colors to be affected at the same time it is unlikely Every affected color will saturate the page with 100 of its respective color Most Likely Cause The cleaner blade on one or more of the photoconductors may be out of position Resolution e Verify the problem by swapping the bad photoconductor causing the 100 saturation with a known good photoconductor in the machine i e swap the bad Cyan with the good Magenta photoconductor in their
4. Lexmark C73x X73x C74x X74x No Display Lines in Display C74x X74x Only Problem Description The display is blank or lines appear in the display The printer may seem dead Most Likely Cause The operator panel flex cable is dislodged from the connector on the system board or it is damaged See the picture on the right Resolution Inspect the operator panel flex cable at the system board if the edge is rolled up replace the cable If the cable is undamaged reseat the cable Background e Early operator panel cables do not have wings to secure them to the connector on the system board e lf the printer is jostled during shipping it is possible for this cable to become unseated or damaged For Training Use Only Stretched Text Image from ADF Clicking Noise in ADF MFP Only Problem Description A portion of the scanned page looks stretched smudged or smeared Aclicking noise may be heard from the ADF See picture on the right Most Likely Cause Dirty pick roller or a defective skew sensor card Resolution e Verify that the pick roller assembly is in good condition and working properly Clean the pick rolls with a lint free cloth dampened with alcohol e lf you hear a consistent clicking noise while making a copy replace the skew sensor card This card is located in the ADF Front Case Assembly EH aay l YA eh We gt m 5 ER x t Br ba H n
5. cept another shipped with cartridge from another printer e Shipped with cartridges state on the top right section of the label Operates only in shipped with device Not for resale e Ifa different shipped with cartridge is installed in a printer that has reached toner low the printer will display a 32 37 Unsupported Cartridge error message For Training Use Only
6. lution e Ifthe printer is new just out of the box wait 48 hours for the printer and supplies to acclimate to the printing environment before troubleshooting further e Switch print speed Most jitter only occurs at one print speed For example if you see jitter at 600 dpi full speed default try printing your job in Quiet mode 600 dpi half speed or 1200 dpi Likewise if jitter is present in Quiet mode or 1200 dpi try printing at 600 dpi full speed e Lower the Toner Darkness setting 1 level Some half speed jitters are only present on very dark print e Recalibrate Especially if new cartridges were just installed or installed recently It is possible that the initial printer calibration may not be optimal to prevent jitter e Replace the toner cartridges s exhibiting the problem e Replace the Printer Gear Box If a Technician is onsite Try rotating the Developer Roll on the Toner Cartridges 120 degrees 1 3 of a revolution on the color s exhibiting the problem Try this twice before replacing any parts For Training Use Only LEXM ARK Fine Line Jitter Horizontal Light Lines Example 1 M A ee le mm i if In IHN For Training Use Only Fine Line Jitter Horizontal Light Lines Example 2 For Training Use Only Repeating Mark 72 4mm Problem Description Repeating mark at 72 4mm down the page on the outside margin area See picture below Most Likely Cause e A worn or
7. slots e Printa test page e Ifthe suspect photoconductor is defective it will cause 100 saturation of the toner color in its new position In other words the defect follows the photoconductor no matter where you put it e Swap the photoconductors back to their original slots and replace the defective photoconductor e If however the 100 saturation DOES NOT follow the supply stays with the slot then the HVPS and or HVPS contacts my need to be replaced For Training Use Only Horizontal Void Light Line at 94mm Spacing Problem Description Horizontal light lines or wrinkle looking defect on one or both edges of an image repeating at 94 mm 3 1 4 in down the page The defect will be seen best on heavy coverage prints See print samples below Most Likely Cause Atear or crack on the Fuser belt due to stress Resolution e Replace the fuser if it is not at the end of life e Make sure to Reset the Fuser Count and run the Motor Calibration in Configuration Menu immediately after installing the new fuser and prior to sending any print jobs Close up of defect caused by multiple cracks in the belt Repeating defect at 94mm For Training Use Only Fine Line Jitter Horizontal Light Lines Problem Description Horizontal light lines on the image at spacing between 0 5mm and 2 5mm See print samples on the following two pages Most Likely Cause Mechanical vibration of the internal parts Reso
8. terrupted by powering it off during a Busy event the door should unlock on POR e Ifthe door is still locked it will need to be manually unlocked by turning the Top Cover Camshaft This will require a service call See the Service Manual for this procedure e If the printer was interrupted by an error during a Busy event then the front door won t unlock on POR if that error still exists The error will prevent the printer from completing its POST cycle For Training Use Only LEXM ARK Close Top Cover Message Will Not Clear Problem Description The printer Operator Panel displays Close Top Cover and will not come to Ready even though the cover appears to be closed Most Likely Cause e The customer has not closed the top cover of the printer properly e The printer senses the closure of the top cover through torque in the Fuser Motor If the Fuser has a failed clutch or drive component the torque will be too low and the printer will think the top cover is open Resolution e Open the top cover door and re close it to ensure that the top cover is seated properly e lf the error persists replace the fuser Make sure to Reset the Fuser Count and run the Motor Calibration in Configuration Menu immediately after installing the new fuser and prior to sending any print jobs e lf the fuser doesn t fix the problem replace the EP Drive For Training Use Only False Load Tray 1 Insert Tray 1
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