Question about Sharp AL-1553 All-In-One Laser Printer

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H4 showing on model AL 1553

H4 showing

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Hello my friend.
It is a fuser temperature error or one of the sensors is dirty.
You could try removing the fuser assembly - ensure power is switched off- then try cleaning the sensors as they tend to get paper dust and melted toner which collects between the surface which senses the heat from the fuser `Hot` roller.
if this doesn't fix it you may need to replace the fuser.
There is also an engineer code that you can enter to clear the fault
PRESS: Clear - exposure - clear - exposure = the LED display will turn off.
PRESS: # of copy keys until you have 14 displayed.
PRESS: Enter.

Posted on Feb 05, 2010

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1 Answer

My copier is showing H4 and does not work


Push the 'clear' button and then the 'auto' button then the 'clear' button and then the 'auto' button again.This should be done as quickly as you can and the console will go blank.Next,select 14,which is the low temp clearing code, and then push 'start' and then turn the machine off and back on again.


If the error still occurs call Sharp or qualified technician to resolve your fuser issue

Jun 06, 2011 | Sharp AL-1553 Black and White Copier

1 Answer

When we switch it on it shows H then 4 and won't let us do anything. It's a Sharp AL 1553 PHOTOCOPIER


To reset the H4 condition on just about any Sharp AL series copier press the following key's in sequence and as quickly as possible (with 4 seconds for the first 4 keys)
Press "C" then the far left key (exposure mode) then the "C" key then the far left again.
So in other words C, far left, C, far left
Some model's use 2 other initial codes, so you may need to use one of these 2 alternate codes to get your display to go blank. The rest of the procedure is the same.
Alternate codes are: #, * , C, * or pound,star,C,star and also
#, Interupt, C, Interupt
If done correctly the display should go blank.
Now key in 14 as if you were going to make 14 copies.
Now press the print button.
The machine should reset and the code should be gone.
9 times out of 10 this is a false code that pops up due to power surges or noise.
If the code comes back this means you have a heater lamp or thermal fuse (more common) failure in the fusing area and will need service.

Jan 10, 2011 | Sharp Office Equipment & Supplies

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Copier flashing "H4" code


Hello sir;Follow these steps within 4 seconds; press 'clear', "exposure" ,"clear" "exposure" then enter 14 hit print, should be OK.

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Sharp AL-1553 code


E7 03 Scanner position error 04 Exposure lamp blown 05 CCD calibration error 12 White level calibration error 14 Main board malfunction 15 Exposure lamp blown L1 00 Scanner position error L3 00 Scanner position error L4 01 Main motor drive overloaded L6 10 Polygon mirror motor not up to speed H2 00 Fusing unit temperature error H3 00 Overheated fusing unit H4 00 The fusing unit doesn't heat up U2 01 Counter error 04 EPROM error CH blinking Dev unit is not properly installed

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www.tinli.com.hk/PDF/AL1216.pdf

Hope this helps.

paul

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Try to press #, Interrupt, C, Interrupt in that order and enter 14 then press copy key.

Oct 20, 2008 | Sharp AL-1000 Laser Printer

1 Answer

H4 error code


H4 is a Fuser Unit heating problem.
This reset is for another model sharp, see if it will work for you.

Press "Clear", "Auto Exposuer", "Clear", "Auto Exposure", the display will go dead... then press "14" (Like your going to make 14 copies), then press "Start".

Hope this works.
Good luck,
Mac

Feb 10, 2008 | Sharp AL-1551CS Printer

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