Question about Sharp AR-207 Copier
I went to change the toner and when I turned the machine on the display was flashing "CH". I replaced it with the old toner and it still gave me the problem.
What should I do?
Is there a code that I could put in to clear it out? need help.
CH code is usually associated with the Crum chip located on the back of the toner cartridge that gets 5 volts dc from the power supply and resets a counter on the main board to tell the copier approximatley how much toner you have when you insert an new toner. What may have happened, is the same 5 volts dc is shared with the laser unit and the when the laser goes bad it may cause the CH code just before it gives the E7-03 code for the laser due to the 5 volts being drawn down by the bad laser. If turning the machine off and back on with the new toner doesn't fix it then you either have a bad chip on the new toner or a bad LSU (laser Scanner unit)
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Posted on Dec 20, 2007
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Posted on Jan 02, 2017
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