Question about Sharp AR-M237 Digital Copier

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Error code h4-21 in sharp copier ar237 - Sharp AR-M237 Digital Copier

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That is a underheat condition. Should be able to clear it easily.
On the keypad/consol. Press in order # * C * ... sometimes its P * C *.
The machine will enter diagnostics or what is known as Sim mode.
Enter the number 14 like you were going to make 14 copies. Press start.
I believe on the 237 you will have to then enter 1 then execute or press start.
But that code is cleared probably 99 percent of the time with this procedure.
Let me know please.
But it just warmed up a little slow. Common fault.

Posted on Nov 12, 2010

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Posted on Jan 02, 2017

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