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  • Remanufacturing the Samsung ProXpress SL-M4530 Series Toner Cartridge MLT-D304

    https://static.ombe.com/slir/w235/forums/200/rickpics/josiah_ Samsung_ProXpress_SL-M4530/SamsungMLT-D304S.jpg By Mike Josiah and the Technical Staff at Uninet

    The Samsung ProXpress SL-M4530 printer engine is based on a 47ppm, 1200 x 1200 DPI laser engine. These machines have a first page out as fast as 6.5 seconds, and come standard with 512Mb of memory, (expandable to 2GB). The SL-M4530 series also has duplexing built in. New printers in this series come with starter toner cartridges which are rated for 7000 pages.

    There are three different toner cartridges available for these machines. The MLT-D304S STD cartridges are rated for 7,000 pages, the MLT-D304L HY cartridges are rated for 20,000 pages and the MLT-D304E EHY cartridges are rated for 40,000 pages.

    The toner cartridge is basically just a large tank and is very easy to remanufacture.

    Current machines released so far for this series are:

    ProXpress SL-M4530

    ProXpress SL-M4583

    The cartridges costs are fairly high so these are very profitable to do!

    MLT-D304S $152.99*
    MLT-D304L $244.99*
    MLT-D304E $393.99*

    *Pricing as of 6/1/19

    Required Tools

    Toner approved vacuum.

    Phillips Head Screwdriver

    Small Common jewelers Screwdriver


    Required Supplies

    Toner for use in the ProXpress SL-M4530 series of cartridges.

    Replacement chip

    Replacement seal

    Toner magnet cloths


    1) Vacuum the exterior of the cartridge.

    2) On the right or Gear Side of the cartridge, remove the three screws and end cap. See Figure’s 1 & 2

    Figure 2
    Figure 2



    Figure 3
    Figure 3



    3) Carefully pry up the fill plug. The plug is glued in but can be broken free by prying it up from all sides a little at a time until it breaks free. See Figure’s 3 & 4

    Figure 3
    Figure 3



    Figure 4
    Figure 4



    4) Remove all remaining toner.

    5) Remove the 2 screws from the spring loaded port cover assy. See Figure 5

    Figure 5
    Figure 5



    6) Clean the port seals and install a new seal. (You can make one from clear tape folded back on itself until one is available) See Figure 6

    Figure 6
    Figure 6



    7) Replace the port cover assy. and two screws. See Figure 7

    Figure 7
    Figure 7



    8) Remove the screw located next to the large green knob. See Figure 8

    Figure 8
    Figure 8



    9) Press in on the three tabs to loosen the cover. Be careful not to break the alignment tab. See Figure’s 9, 10 & 11

    Figure 9
    Figure 9



    Figure 10
    Figure 10



    Figure 11
    Figure 11



    10) Lift up on the wire cover and remove. See Figure 12

    Figure 12
    Figure 12



    11) Replace the chip. Make sure the cable is fully seated in the new chip’s connector. Also make sure the wires are tucked away so that they are not damaged when the chip carriage is moved. See Figure’s 13 & 14

    Figure 13
    Figure 13



    Figure 14
    Figure 14



    12) On the opposite end of the wires is a toner sensor board. Shown here just for information purposes. There is no need to remove it. See Figure 15

    Figure 15
    Figure 15



    13) Snap the wire cover back in place. See Figure 16

    Figure 16
    Figure 16



    14) Press the chip housing back in place. Make sure the three tabs are locked and the cover is fitting properly around the alignment tab. See Figures 17, 18 & 19

    Figure 17
    Figure 17



    Figure 18
    Figure 18



    Figure 19
    Figure 19



    15) Install the screw. See Figure 20

    Figure 20
    Figure 20



    16) Fill the hopper with the appropriate amount of toner for use in the ProXpress SL-M4530 series of cartridges. See Figure 21

    Figure 21
    Figure 21



    17) Replace the gear side end cap and three screws. See Figure 22

    Figure 22
    Figure 22

    Comments 1 Comment
    1. Paulo Cesar's Avatar
      Paulo Cesar -
      greetings Mr. Mike Josiah is delighted to write to you and thank you for all the collaboration and technical experience shared worldwide during these almost 25 years of working in the remanufacturing market. I leave here my thanks
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