Xerox 242 (7655) Drum/Fuser reset

[diamondian]

Just had a 242 (7655) delivered and the drum and fuser life is showing low.

The copy quality is great and I was wondering if they could be reset in any way?

Does anyone know the NVM codes or is there another way.

Thanks

[copymachine]

Read pdf about fuser, and about drum try to change nvm 954-837(Y), 954-838(M), 954-838(C),954-839(K) threshold for rotation.

[diamondian]

Thanks.

I have changed the 744-354/355 settings to the ones specified but cannot seem to get to the dC135 HFSI to change the threshold.

I have found dC135 CRU/HFSI but it wont let me change details.

I dont seem to have adjustments/others in maintainance/diagnostic.

Just out of interest, what does changing the 744-354/355 settings actually do?

[johnner66]

what i do here is replace the rfid chip to a new one if the condition of drum still good now can get the chip easily in the markets

[TechMate]

	Quote:			Originally Posted by diamondian
	... Just out of interest, what does changing the 744-354/355 settings actually do?

nvm 744-354/355 extends the fuser life to a specified value (default is 200/210) and we recommend 490/500.

HFSI 954-842 resets the value of the fuser life

Also, you need to change Nvm 751-448 to 1 (warns and continues) if you want to use your drum continuously even if it says 'replace drum NOW'

[Bhante]

	Quote:			Originally Posted by diamondian
	Thanks. I have changed the 744-354/355 settings to the ones specified but cannot seem to get to the dC135 HFSI to change the threshold. I have found dC135 CRU/HFSI but it wont let me change details. I dont seem to have adjustments/others in maintainance/diagnostic. Just out of interest, what does changing the 744-354/355 settings actually do?

I would guess dC135 CRU/HFSI is probably reading the useage chip ("RFID chip") rather than the NVM, that is why you can't change it. If you put in a new chip or reset the chip then it should show a new value.

Incidentally, I don't know why people call it an RFID chip, which usually means an encapsulated proximity device that communicates using radio frequency. Usually it is just a unique ID number, hence the anacronym RFID. But maybe there is another anacronym with the same letters? Or maybe some of the latest machines really do use RFID? Unlikely, I would have thought. The ones I know are simple I2C bus EEPROMs.

[modular]

Hello, I have a 242 also, and the fuser life is short because we are using a lot of heavy paper.
Good luck with your printer.