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SECTION I: TOOLS AND SUPPLIES
Tools you’ll need:
SECTION II: PROCEDURE
1.) First check the drum for flaws (turns counter-clockwise if you’re looking at the rear end)... If the drum is still in good shape, you may choose to polish it & use it for a second cycle.
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2.) Turn the front drum hub 1/4 turn
clockwise and then extract it. The drum
can then be lifted out of its cradle.
This drum is light sensitive so store it
in a dark place.
3.) Remove the two rear metal contacts (1 screw each from the top). Then remove the charge corotron (2 silver screws). |
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5.) Vacuum & clean everything thoroughly. Be careful not to damage the scorotron grid and the thin mylar recovery blade. The front end-cap is held in place by 3 clips... take notice of the position of the 3 gears which drive the auger system... they are loose under the front end cap and will fall off easily. Slide back the shutter on the top of the auger tube & vacuum any excess toner out.
| 6.) Drum Count Reset: Remove the Drum Count Reset Mechanism (the white gear-like piece... see illustration #2) from its shaft on the rear of the cartridge (1 clip). If you do not see this piece, read the Note below. Reposition the Reset Mechanism so that the flag is at around 1 o’clock as shown in Illustration #2 & re-install the clip. |
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7.) Reassemble the cartridge. Install the blade, the corotron, and the 2 metal contacts (the wire from the corotron goes through a hole in the plastic & under the forward most contact, the screw goes through the loop in the wire). Apply Fresh Drum Starting Powder to the drum & Blade (we have found the starting powder which new generic drums come with to be completely inadequate in this model, so remove the old starting powder & apply fresh stuff). Re-install the Drum & Front Drum Hub. Turn the drum (counter-clockwise looking at the rear end) to make sure it turns ok and that the cleaning blade is working properly.
DRUM RESET (24-7)
Enter diagnostic mode as explained above. Select ‘24’ using the copy quantity buttons, and press ‘Print’, then select ‘7’ and press ‘Print’ again. This resets the drum count to ‘0’. Turn off power to exit diagnostics.
READING DRUM CARTRIDGE COUNT (22-12)
To see how many copies a cartridge has run... enter diagnostics and select ‘22’ using the copy quantity buttons, then press ‘Print’, then select ‘12’ and press ‘Print’ again. The copy count will flash, 2 digits at a time (Ex: ‘00’ followed by ‘05’ followed by ‘67’ would mean 567 copies). Press ‘Clear’ to exit diagnostics.
DRUM CARTRIDGE LIFE END ENABLE / DISABLE (27) It is possible to set up a machine so that it will never call for a new cartridge. This option should only be used if your customer understands that the only way to know that it is time to change the cartridge will be as the copy quality degrades (as the drum or blade begin to fail). To disable the End of Life function, Enter diagnostics and press ‘27’ followed by ‘Print’. The current setting will be displayed (‘0’= "End of Life Disabled", ‘1’ = "End of Life Enabled"). The manual is un-clear beyond this, but it would make sense to try changing the setting with the copy quantity button. You will probably need to press ‘Print’ to lock in the new value. Turn off machine to exit diagnostics.