What does Olivetti d-copia 120 error message H4 mean?

SOURCE: Sharp H4 Error message

Hello sir; The code need to reset;
1, press "#", "interrupt", "c", "interrupt" keys.
2, enter 14 then press start.
3, if machine work, please don't forget to give me a good rating.
THANK YOU !!!

SOURCE: Toshiba e-studo120 H4 error code

This should do it.

Performing a Fault Reset 14 will reset your WorkCentre and will help to clear error codes.

1. Find the pink Clear button on the Control Panel of the WorkCentre.
2. Find the button below the word Auto.
3. Press these buttons in the following sequence: [Clear], [Auto], [Clear], [Auto] NOTE: All of the lights on the Control Panel should go out and the LED Display should go blank. If the lights do not go out, then repeat step 3 until they do. It may be necessary to increase or decrease the pace of the [Clear], [Auto], [Clear], [Auto] sequence.
   
4. Press the [10's] key one time and the [1's] key four times to enter '14' in the LED Display, as if you were to make 14 copies.
5. Press the green [Start] button.
6. Press the pink [Clear] button two times.
7. The WorkCentre should now warm up and come to ready.
8. If the above steps do not clear the error code, repeat steps 3 to 6 a second time.

SOURCE: sharp al2030 error code h4 upon power up

Here is the solution straight from the lips of tec support at sharp.

This can happen due to a power outage.

Here is how you fix it.

1. Hit clear, then auto. (clear is on the right the red C, auto is on the far left)
2. Once again Hit clear, then auto. (clear is on the right the red C, auto is on the far left)

At this point wait for the screen to go dark.

3. Type in 14 (hit the 10 once an the 1 button 4 times)
4. Hit the Green Button.

The screen will go dark and reset the copier.

SOURCE: how to change the paper size in olivetti copia d 20 w copier

In pallet install to limiters as is done on sectoring, but with inverse, distant sides install the plastic insertions as defined, there there is helps with instruction format.Good luck!