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HOW WILL I SOLVE ERROR CODE CH ON SHARP 5516
If it is on solid then you have a cover that is not closed try opening and closing all your covers. sometimes you need to use tape to hold them down if they wont stay closed on their own. If it is blinking then your developer unit is not communicating with the machine, this is the unit between the toner and the drum that is normally held in by one blue screw. pull it out and try using canned air to clean the electrical contacts on the back of it.
I’m happy to help further over the phone at https://www.6ya.com/expert/ethan_e84416e0b13809d2
on Jun 06, 2014
Catridge of Sharp mf420u
When the toner supply not attached the properly than comes this problem.
Better way you open the toner and check all toner supply gear ,if gear is jam than you should replace the toner.I think your toner chip version problem or destination problem.
on Jun 02, 2014
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