Remanufacturing the Samsung SCX-6320 Toner Cartridge and Drum Unit
First released in November 2004, the Samsung SCX-6320 engine is a 22-ppm fax engine
that runs at 1,200 dpi. The Samsung toner cartridge SCX-6320D8 is rated for 8,000
pages, and has a list price of US$79. This engine is similar to the Samsung SF-830
in that the toner and drum have been split into two different cartridges. These instructions cover both the toner cartridge and the drum unit. Both cartridges are very simple to remanufacture.
The toner cartridges are chipped, and the chip does need to be replaced each cycle.
The chip also identifies if it is a Samsung, Xerox (U.S./Canada), or Xerox (Europe).
The SCX-6320 machines have a toner save function. The Toner Save mode is basically
just like the Economode method used by other manufacturers. Only half the dots
are printed, using less toner.
Current machines based on the SCX-6320 engine are:
- Samsung SCX-6120
- Samsung SCX-6220
- Samsung SCX-6320F
- Samsung SCX-6520FN
- Xerox WorkCentre M20
- Xerox WorkCentre M20i
- Xerox CopyCentre C20
The SCX-6320 toner cartridge.
The SCX-6320 drum unit.
Part numbers for the cartridges are shown in Table A.
Samsung and Xerox list pricing as of November 2005 is $79.99 for the toner cartridges
and $99.99 for the drum units.
Machine and cartridge troubleshooting/information are covered at the end of this
article.
Remanufacturing Instructions for the Toner Cartridge
1) Remove the two screws located on the waste chamber. Remove the waste chamber. Be careful not to lose the gears. See Figures 1 and 2.
Figure 1
Figure 2
2) The gears on the waste chamber are on fairly tight so if you are careful there is no need to remove them. See Figures 3 and 4.
Figure 3
Figure 4
3) Vacuum/blow out the waste chamber clean.
4) On the same side of the cartridge as the waste chamber, remove the toner fill plug. See Figure 5.
Figure 5
5) Dump the bulk of the remaining toner out of the cartridge. Vacuum/blow out
the toner supply chamber clean. It is unnecessary to get the cartridge completely
clean now, as the developer roller needs to come out so the doctor blade can
be cleaned. You will have easy access to clean out the hopper then.
6) Remove the waste chamber drive gear. See Figure 6.
Figure 6
7) Remove the three developer roller screws and end cap. Watch out for the white
bushing, it can fall out of the end cap. See Figures 7, 8 and 9.
Figure 7
Figure 8
Figure 9
8) With a spring hook, bend up the middle of the developer roller cover, and
remove from the cartridge. The cover has a small plastic tab that locks it in
place on each side. See Figure 10.
Figure 10
9) Remove the three screws from the opposite side end cap. See Figure 11.
Figure 11
10) Note the location and placement of the gears, and remove them. The small gear that fits under the tail of the doctor blade comes off; you just have to pry it up at an angle. See Figures 12 and 13.
Figure 12
Figure 13
11) Remove the two screws on the small internal end cap from the gear side, on the developer roller shaft. Remove the end cap. See Figures 14 and 15.
Figure 14
Figure 15
12) Lift the developer roller out of the cartridge. See Figure 16.
Figure 16
13) Clean out all the remaining toner from the hopper.
14) Clean the doctor blade. Until new blades are available, we do not recommend that this blade be removed, as it is held in place by an adhesive foam seal under the blade. If the blade is pried up (not an easy thing to do) the blade will bend, and become useless. Clean the blade with a cotton swab dampened with alcohol with the blade in place. Make sure that you do not drip any alcohol into the cartridge. See Figure 17.
Figure 17
15) Install the developer roller. Be careful not to damage the shims! See Figure 18.
Figure 18
16) Install the developer roller internal end cap and two screws. See Figure 19.
Figure 19
17) Install the gears, start from left to right, and put the inside gears in place first. See Figure 20.
Figure 20
18) Replace the chip. See Figure 21.
Figure 21
19) Install the gear end cap and three screws. See Figure 22.
Figure 22
20) Install the waste chamber drive gear, end cap, and three screws on the waste
chamber side. See Figure 23.
Figure 23
21) Install the developer roller cover in the same way it was removed. Do not
bend it at too much of an angle, or it will stay bent. See Figure 24.
Figure 24
22) Fill with 250 grams of SCX-6230 toner. See Figure 25.
Figure 25
23) Install the fill plug, check for leaks. See Figure 26.
Figure 26
24) Install the waste chamber and two screws. The waste chamber does not fit
tight, even when the screws are snug. This is to allow it to fit to the waste
section of the drum unit better. See Figure 27.
Figure 27
25) Make sure the waste chamber drive gear is meshed with the waste chamber
gears. See Figure 28.
Figure 28
Remanufacturing Instructions for the OPC Drum Cartridge
26) Remove the single screw from the handle end cap. See Figure 29.
Figure 29
27) Press in on the tab, and remove the end cap. See Figure 30.
Figure 30
28) Remove the top two screws. See Figure 31.
Figure 31
29) Remove the side screw, and lift off the PCR assembly. See Figures 32 and 33.
Figure 32
Figure 33
30) Remove the two screws from the metal drum axle plate, and the axle plate.
See Figures 34 and 35.
Figure 34
Figure 35
31) Carefully pry off the opposite side drum drive gear. It is on tight. See
Figure 36.
Figure 36
32) Remove the drum, and place aside. See Figure 37.
Figure 37
33) Remove the two screws and the wiper blade. See Figure 38.
Figure 38
34) Remove the waste auger from the chamber. Be careful not to lose the gear
on the end of the auger. Clean out all the waste toner from the chamber and
auger. See Figures 39 and 40.
Figure 39
Figure 40
35) Install the cleaned auger in the chamber, keyed end into the gear. See Figure 41.
Figure 41
36) Install the new wiper blade and two screws. See Figure 42.
Figure 42
37) Install the OPC drum, make sure the white hub is toward the gear side, and that the tab on the hub is set in the slot on the top side. See Figures 43 and 44.
Figure 43
Figure 44
38) Snap in the drum drive gear. See Figure 45.
Figure 45
39) Install the drum axle plate and screws. See Figure 46.
Figure 46
40) On the PCR assembly gear side, move the PCR drive gear so that it no longer meshes with the cleaning roller drive gear. See Figure 47.
Figure 47
41) Press down on the PCR shaft and pry the black PCR holder out from the inside. Make sure you don’t lose the spring. See Figure 48.
Figure 48
42) Slide the PCR over, and remove. See Figure 49.
Figure 49
43) Vacuum/blow clean the PCR cleaning roller. Clean the PCR with a clean lint-free
cloth. For now we do not recommend any chemicals be used other than pure distilled
water to clean the PCR.
44) Install the PCR. See Figure 50.
Figure 50
45) Install the black PCR holder so that the tabs fit
on both sides of the track. Install the spring. See Figures 51 and 52.
Figure 51
Figure 52
46) Place a small amount of conductive grease on the bullet-shaped end of the PCR. See Figure 53.
Figure 53
47) Set the two white gears so they mesh again. Failure to do this will allow a buildup on the PCR, ghosting and/or backgrounding will then occur. See Figure 54.
Figure 54
48) Install the PCR assembly and three screws. See Figures 55 and 56.
Figure 55
Figure 56
49) Clean any remaining waste toner from the handle/end cap. Install the end cap and screw. See Figure 57.
Figure 57
50) Replace the fuse. See Figure 58.
Figure 58
Page Count
Even though this is a small copier, it does keep a page count. It is accessible through the Control Center software. Click on the information tab to see the counter(s).
Toner-Low Notification
As with many fax machines, you can program the machine to fax you when the cartridge needs to be replaced. This is done through the System Admin tools. If you are not the seller of the copier, this may have been done by the vendor, and may have been password protected. Do not change this unless you have the machine owner’s permission!
Resetting the Drum Counter (If the Fuse Does Not Work)
- Press the “Machine Status” key
- Using the navigation keys, scroll until SYSTEM ADMIN TOOLS appears on the
display
- Press “Enter”
- If it has been password protected, enter the password now
- Use the navigation keys again until you see NEW DRUM on the display
- Press “Enter”
- To set the counter to Zero, select ON, and press “Enter.”
Running the Drum Cleaning Page
- Press the “Machine Status” key
- Using the navigation keys, scroll until SYSTEM ADMIN TOOLS appears on the display
- Press “Enter”
- If it has been password protected, enter the password now
- Use the navigation keys again until you see CLEAN DRUM on the display
- Press “Enter”
- The cleaning page will print.
Cartridge Troubleshooting
There is really not much that can go wrong with these cartridges. From our experience,
it is a safe bet that most of the problems will come from either the developer roller or the doctor blade. Streaking, shading, backgrounding -- all can come from these two parts. We will write an update after we have more information.
Defect Chart
- OPC drum 94.30mm
- PCR 38.30mm
- Toner feed roller 43.80mm
- Developer roller 54.30mm
- Transfer roller 56.60mm
- Upper fuser roller 83.60mm
- Lower pressure roller 91.00mm
Machine Troubleshooting
As with most Samsung machines, the error codes are in plain English. There are,
however, a few messages that can be confusing. (Different words are used for
the same parts.) They are as follows:
Drum Warning: The drum cartridge is nearing the end of its life.
Drum Empty: The drum cartridge is finished.
No Developer Cartridge: This means the toner cartridge is missing. Actual developer is not used in these machines. I’m not sure why they didn’t use a “no toner cartridge message,” but that is why we included the messages here.
Invalid Cartridge: The wrong cartridge is installed (Xerox/Samsung), or the wrong chip is installed.
Contact Mike Josiah and the technical staff of Summit Technologies at (631)
218-8376, fax (631) 218-3285 or visit www.summitechnologies.com.
This article originally appeared in the January 2006 issue of Recharger.