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Re: Sharp AL 1644
Here is the fix: Press "C", press the exposure button (below the picture of the little man), press "C", press the exposure button. When you do this all the indicator lights will turn off. Now input "24", press the green start button, input 07, and press the start button again. Now turn the copier off and back on with the power switch on the side.
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The AL1000 drum unit is the same as the AL1641 drum.
I do not recognize the MS1DR as a sharp part number.
You can reset the drum indicator by pressing these keys in sequence: Press "C" then press "Exposure Mode" then "C" again then "Exposure Mode" again. Note that the Exposure Mode key is the far left key on the panel. One you press these 4 keys in sequence the display should go blank. Then key in 24 as if to make 24 copies. Then press Print (Green Button) Then key in 7 as if to make 7 copies. Press print again. You should now get flashing 000. Turn machine off then back on and the light should be gone. Here it is in a short version: C, far left, C, far left, 24, print, 7, print, then power off and back on.
This should make the copier operational again if all you have is the drum light.
The red light that looks like an empty cylinder on the Sharp AL 1631 Grayscale Copier panel is the "drum replacement required" indicator. The "cartridge replacement" indicator is represented by 6 dots forming a triangular shape.
The drum replacement indicator lights up when there are about 1000 copies left until its end of life. It is only when the indicator starts blinking that the drum really needs replacement.
The part number for the drum is AL-100DR.
I hope this helps.
This works on MOST sharp AL series copiers.
Press these keys in sequence:
Clear → Density select → Clear→ Density select
display should go blank. Then enter:
24 as if you were making 24 copies then press print
then enter 7 as if you were making 7 copies then press print
if successful you should see flashing 000
turn machine off then on again and the drum light should be gone.
To enter the serviceman simulation mode, press the keys as follows: Clear → Density select → Clear→ Density select To cancel the simulation mode, press the clear key. Then enter code 14 then hit start.
Older Sharp AL copiers will go on working with the drum light blinking, but yours will not. Newer models do stop working when the drum reaches its limit. Now keep in mind that just as almost every copier in the market, these units count the copies they make in order to determine toner & drum life. So it is possible to reset the drum counter if you inspect the unit and see no markings or visible wear & tear. Also keep in mind that the toner & drum units have been the same for all AL units through time, so there are plenty of good replacements in the market (not recycled, but re-manufactured or brand-new compatibles).
As for your unit, if the drum is Sharp original or a good quality replacement, you should have to do nothing after installation, for the internal chip in the drum will tell the copier to reset the counter and begin working automatically. However if that is not the case, or should you want to reset the counter on your existing drum, this is the correct sequence to do so.
Identify the buttons used for adjusting exposure (darker or lighter copies), amount of copies, clear copies and start copying.
Now press the following sequence of buttons: [CLR], [EXPOSURE], [CLR], [EXPOSURE]
Your unit should turn off the numbers in the panel.
Now press 24 as if asking for 24 copies and press [START].
Press 07 as if asking for 7 copies and press [START].
Your unit should restart by itself and start working normally.
Usually CH indicates that one of the doors on the copier is not closed properly, if it is a flashing CH then there is no toner cartridge in the copier or the cartridge is of the wrong type for this machine. A lot of toners for this machine look alike but are not the same for the machine.
Did you replace the drum with a Sharp brand drum? I recently replaced a drum in my Sharp AL-1642CS, the replacement drum fits ok, and the lights you describe are gone now, but it does make an annoying noise that is new. I wish I would have spent the money to get a Sharp drum, then you can call them directly for support. When I have called them they have been very helpful.
Your unit definetly needs a new drum. The usual yield for this consumable is upt ot 15,000 pages, so at the stated rate, the unit yielded more than average. AL-1000 series share the same toner and drum, so finding remanufactured (or recycled) drum units should be no problem. In Puerto Rico, they are sold for about $79.00.