You have an open Thermistor in the fuser unit or the code is false caused by power surge. To reset it, press P*C* and hit 14 start, then hit either ok or start again and machine chould reboot and clear code. If code returns then the thermistor is bad. You will have to have your local dealer replace either the themistor or the entire fuser unit.
May be * # C * press 14 press print key
SOURCE: Lost key operator code for Sharp Copier AR-M207.
The default is 00000
Simulation 22 - 07 will display the Key operator code.
Perform the following procedure to enter the simulation mode.
"#" key -> “*“ (star) key -> "C" key -> “*“ (star) key (do this in quick sequence order, the display should change, then enter below)
Main code {22} ->
(Green Copy Button) Start key ->
Sub code {07} ->
(Green Copy Button)Start key
Press the "CA" button to go back to Copy mode.
SOURCE: Sharp AR-M207 Error Message
H4-00 means heat roller low temperature detection. It usuallly caused by 3 things :
1. The machine hang : You simply reset the error code by pressing : # * C * then input 14 then start.
2. If the error still displayed, open the side cover, feel the fusing unit ( don't touch, it is hot ), if the
fusing unit feels cold then the problem is the heater lamp ( inside the upper heater roller,
connected with anti heat cable and big connector ), you should replace it.
3. If the fusing unit feels warm or hot then the problem is the thermistor ( connected with small cable
and connector ), replace it.
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in my sharp printer i have received code error H2-00
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