U2-40 I HAVE A SHARP AR-M237 COPIER WHEN I TURN THE POWER ON, I GET AN ERROR MESSAGE: CALL FOR SERVICE CODE U2-40 I CHANGED THE CARTRIDGE AN THE ERROR MESSAGE DIDN'T DISAPPEAR. PLEASE HELP.

It sounds like you have a bad toner cartridge. There is a chip on the rear end of the toner that is sometimes defective. It doesnt happen often, but it happens.
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Hi,
check harness and connector betwen thermistor and control PWB.
clear the error code by using SIM 14 if all didn't work you may have defective AC power supply

I hope this help

plese check you have changed the same partno toner or not. if its ok you have problem in connector wich hold the toner cartrdge ic

your toner should be AR-270NT or AR-310NT. Try cleaning off the brass colored contacts in the plug on the back of the toner cartridge. The toner may also be faulty (try another) Also the contacts inside the copier may need to be cleaned by your copier technician.

Since this appears to be a non-US model I can only base my response on the closest US body type AR-M237.

U2-40 means the countdown (CRUM) chip in your toner cartridge either broke or went to zero. If you can put in a fresh CRUM chip in your cartridge, that's great, otherwise you'll have to replace the toner cartridge.

L4-01 means main motor lock, probably due to a brownout or otherwise missed timing. You can probably get by with a power off and on. Not sharing your copier with other devices on the same outlet will also help here.

To reset error codes, put the machine in test mode with the four-key combo: # - * - C - * ... 16-Start clears your U2 trouble, 14-Start and 17-Start clear the rest. Then hit CA and allow your copier to reboot. Good luck!

Most messages that state "call for service" are for instances where the unit is not running to prevent damage to the unit.
You should call an autherized or certified technician to work on the unit.

Sharp AR-5620N getting f-2 error. What is the solution

on this code you may have to clean out the developing unit and start with fresh developer. Make sure the developer unit is not leaking from one of the bearings. You may need a tech for this one...

You have to get into the sevice mode and reset the "PM" counter back to zero. Go to service mode and enter code 24 then enter sub code 04 back to all zeros and exit out and turn the copier off then back on and it should disapear.

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