- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hi, U2-40, mostly appears in sharp copiers when you installing new toner cartridge.the reason of this code is faulty CRUM chip because of different type of toner manufacture . you cane this problem by replace the chip in the new toner cartridge by the chip in old toner cartridge - the chip is located in the rear toner cartridge -
U2 40 is a CRUM comunication error with the toner (wrong toner chip on toner cartridge or wrong toner cartridge) try a new toner.
H4 is a fuser trouble code. Check to make sure all conection are right, Theres a few posible problems for H4, power board, MCU board, thermistor, or broken heat lamp.
This means that the cartridge's sensor is miscommunicating with the copier memory thus the code U2 -40. You should clean the inner sensor connector and the toner sensor of the spilled toner by low blower. Perform this code ;# , interrupt , C, Interrupt keys in that order and press 16 then Print key and the code will be cleared.
To find out the sub code for the U2 error hold down the Start key. Below is a list of the errors:
U2-04 EEPROM serial communication error
U2-11 Counter check sum error
U2-12 Adjustment value check sum error (EEPROM)
U2-40 CRUM communication error
To clear the U2-40 error try pulling out the toner cartridge and firmly reinstalling it. If that doesn't work you must install a new toner cartridge. There is a CRUM chip on the cartridge that keeps up with how many impressions have been made with that cardridge. You cannot "refill" these cartridges without replacing the CRUM. This problem occurs frequently with remanufactured cartridges.
To clear other U2 errors you must enter simulation mode. Perform the following procedure to enter the simulation mode. Clear key - Interrupt key - "0" key - Interrupt key - 16 - Start key - Start key. The unit should reset.
U2 is a memory error. It's either the RAM or the ERPROM. A techincian has to look at it and determine which part it is and replace it. The copier won't run until it is fixed. It could be a loose memory board as well.
U2 can have several indications.
The most likely one is that the chip that is on the back of the toner cartridge is not seated properly or has failed.
Try with the machine off, removing and inserting the toner cartridge several times to clean the contacts, next step is to try a new toner cartridge.
There is also a connector on the back frame of the machine that may be dirty or going bad.