Pantum P2502W Toner Reset Chip help

[ELMP]

Re: Pantum P2502W Toner Reset Chip help

Just for claritys sake
1=VCC
2=SCL
3=SDA
4=GND
RiTe?


Oh! Ok so...?
printer off - covered #2- printer on - solid orange light?
printer off - Covered #3 - printer on - solid orange light?
printer off - uncovered everything - printer on - blinking orange light and can now print?
^v
I did it wrong then.

Yes, I believe the way you numbered it in your picture is correct.

Yes the steps you listed, at the end of your message, is the order of events of how I was able to print again. I believe in theory you would only need to:

1) Cover #3 and turn on printer (Let it register a solid orange light that you have no toner)

2) Turn it off and remove the cover

3) Turn on printer and let it read for a toner and this time, in theory, it would have reset its own memory to read the toner's levels instead of the cartridges life cycle...i think. again I'm not a programer.

I still haven't gotten the toner refill yet to try and see if I can make the printer think it's a full new cartridge.

I do not know what those other contacts are, but I would guess it is to send electricity to heat up the toner inside? That is my wild guess, I don't know how laser printer works, I just like them over Ink for my printing needs haha.

I'll report back again when I get the toner refill and see if it lasts.

Good Luck!

[Dreiseratops]

Re: Pantum P2502W Toner Reset Chip help

Can you see this?


Ok so I currently have an old cartridge running a new chip with the one labelled 1 covered with a tiny sticker cut from a sticky note.

This pic was while I was trying your rescue operation, ELMP.


This is a brand new cartridge with the same contact covered that I get the solid orange with no matter what combination of off, on, insert cartridge.... ummm


I get a solid orange light when I cover #2, #3, or #4 with my old cartrige containing a new chip.

I get a solid orange light in every situation using the new cartridge containing my old chip.

https://drive.google.com/drive/u/0/f...GIzNnFhOGFZOVE

Just for claritys sake
1=VCC
2=SCL
3=SDA
4=GND
RiTe?

There are also contacts on A, B, & C. hmm...?

blergh! trouble following the info in that hacking link. Im going crosseyed.


Oh! Ok so...?
printer off - covered #2- printer on - solid orange light?
printer off - Covered #3 - printer on - solid orange light?
printer off - uncovered everything - printer on - blinking orange light and can now print?
^v
I did it wrong then.

[ELMP]

Re: Pantum P2502W Toner Reset Chip help

Hello everyone,

First time to the forums and I wanted to thank you all for working on this project and putting together some great information. I just wanted to report what I found, just now, that I believe may possibly lead to something. I am not a programer by any means; so here goes nothing!

Going off what @tuskiomi found on the toner cartridge, where the SDA and SCL is located, and what @Dreiseratops said about covering one of the contacts, here's the order of events I did.

1) My printer was showing a solid "Orange" light (Toner empty or expired and have not been able to print for days even with power resets)

2) Took a piece of electrical tape and blocked the SCL contact on the Toner Cartridges Chip (Did this on accident)

3) Turned ON the printer and later realized that I covered the wrong contact

4) Turned OFF printer and moved the electrical tape onto the SDA contact

5) Turned ON Printer, Printer did not initialize and gave me the same solid Orange Light

6) Turned OFF printer and removed the electrical tape

7) Turned ON printer and the printer initialized and gave me a blinking Orange Light (low toner)

8) I am now able to print for the first time in days.

I am basing this idea off of a trick that someone had done on a samsung printer years ago where he bypassed the SDA so that the EEPROM would re-calibrate to zero. (His printer used older chipless toner cartridges)

My thought was if I blocked the SDA contact on the toner cartridge and turn on the printer it might do something similar. Sure enough something happened and I got a different outcome that now allows me to print.

My next task is to get some toner refill and see if the cart will register as full, I have no doubts that I am on the last leg of toner inside the starter cartridge.

I hope this helps and if anyone can confirm these steps allows their "dead" cartridge to work, we can hopefully get to the bottom of this.

Thanks!

P.S. reference for the Samsung printer and how he bypassed the EEPROM is detailed here. http://rumburg.org/printerhack/

[Dreiseratops]

Re: Pantum P2502W Toner Reset Chip help

sleuth browsing has got me some hits of interest BTW

Pantum seems to be a Samsung clone.
Samsung chips ARE available.

Also my cell phone camera is junk.

I got a new printer like I mentioned.
printed a bunch - works good.
switched the old cartridge back in and - no go
put the chip from the new cartridge in the old one and viola!
Works good!

PS BTW Some russian gents were talking about covering one of the contacts so no new write information could be recorded.
- so whats an
-SCL
and
SDA-??

[Dreiseratops]

Re: Pantum P2502W Toner Reset Chip help

Alright, yall.
Whats new?
I'll blow $10 on some random chip if one of you wants to scanalyse it.
I was thinking I would have to "steal" a new cartridge every other time I need one by switching tags and stickers and returning the old one as new.

I had to buy a whole printer because my local store didnt have a cartridge in stock.

Heres an idea... Is there a cheapo wifi printer that I CAN just keep full of bone black and paper? I dont need quality images I just want words down on a page.

In any case. Im with you and willing to spend a buck or three to solve it since I already invested a hundred which is half ENTIRELY wasted sitting in the spare room. Here comes another $40 on a 1k-page cartrige that will only put out 600 actual pages. *shrug

Let us know if you make any headway, everyone.

[geekgirl1111]

Re: Pantum P2502W Toner Reset Chip help

Did anyone just buy a chip? if so where?
There are different chip contact designs.
I'm not sure if they can be interchanged.

[geekgirl1111]

Re: Pantum P2502W Toner Reset Chip help

I know that the chips are under the blobs...
Lighten up!!
I unfortunately had to use the printer and the page count hit the max. It totally is dead and has no lights.
I haven't had time to work on it for a while.
Mine uses the same chip that is pictured in the first post. I saw chips for sale but the contacts were not the same.
I want to try covering the data contact and wire another eeprom up (on the arduino) but have a lead from the data pin in the printer to the external chip.
I suppose close circuit to the printer chip ground.
Anyone have any thoughts on this?
I won't be able to get to it for a few days.
I would like to see the Arduino code!

[stj]

Re: Pantum P2502W Toner Reset Chip help

it should be obvious that nobody here worked out how to reset it yet.

[A.RIVERS]

Re: Pantum P2502W Toner Reset Chip help

Any help please, I bought a brand new Pantum 2500W Laser printer about 2 months ago, after printing about 150 pages it showed low on toner. I bought 200g on eBay, disassembled the cartridge toner and took the side cap off and refilled with 150g of toner.After having printed around 50 pages, I get a message saying the life of the cartridge expired. I haven't the clue to perform any of the previous steps done on the forum here so what are my choices, the laser cartridge seems more expensive than the printer itself. I might have no choice but to sell it without the cartridge t a cheaper price and buy a laser printer that can be refilled without the hassles I'm going thru, any suggestions, please advise.

[stj]

Re: Pantum P2502W Toner Reset Chip help

blobs?
those are chips.

[geekgirl1111]

Re: Pantum P2502W Toner Reset Chip help

I hooked it up with an aduino.but only read 0's. Since it doesn't have the contacts for the address bits, how to proceed?
remove the blobs?
I refilled the toner, so now it still says that the toner is low.

[DJ_MIX]

Re: Pantum P2502W Toner Reset Chip help

I removed the Pantum software and only have the driver. Says low toner but still printing.
Says i still have about 200 pages to go.
Reload the toner outside with a mask. I read how bad that stuff is in your lungs. Its carbon and fine plastic granules that will melt into your lungs.
What clock speed did you get for the chip?
So 0x5B is the chip address in the printer?

Hmm gotta try that.. never think that would work

[tuskiomi]

Re: Pantum P2502W Toner Reset Chip help

I used 100KHz, but I'm guessing it takes in a lower frequency, as a brute force Read/Write approach at that frequency fails on all cases. So I'm going to bump it down to 20KHz. I'm going to write a different brute force code for the Arduino later today. I'll provide the source for anyone else who may want to try.

If I were to take a guess, some of the open I2C addresses actually form a serial no., which the printer can then read off. This would make it harder to counterfeit.

To further the study, If the brute and the sniff doesn't do anything, I'll hook my Arduino up to the printer as a slave and log the printer's commands.

[geekgirl1111]

Re: Pantum P2502W Toner Reset Chip help

I removed the Pantum software and only have the driver. Says low toner but still printing.
Says i still have about 200 pages to go.
Reload the toner outside with a mask. I read how bad that stuff is in your lungs. Its carbon and fine plastic granules that will melt into your lungs.
What clock speed did you get for the chip?
So 0x5B is the chip address in the printer?

[DJ_MIX]

Re: Pantum P2502W Toner Reset Chip help

I'm glad someone is also interested in this.
Right now I ran out of toner, so it's in the closet.

Back to my old trusty samsung laser that has no reset chip

[tuskiomi]

Re: Pantum P2502W Toner Reset Chip help

the pinout of the chip is as follows:
(corner notch)
VCC (+3.3V logic)
SCL
SDA
GND

Here is an I2C device scan dump:

I2C device found at address 0x06 !
I2C device found at address 0x07 !
I2C device found at address 0x0E !
I2C device found at address 0x0F !
I2C device found at address 0x16 !
I2C device found at address 0x17 !
I2C device found at address 0x1E !
I2C device found at address 0x1F !
I2C device found at address 0x26 !
I2C device found at address 0x27 !
I2C device found at address 0x2E !
I2C device found at address 0x2F !
I2C device found at address 0x36 !
I2C device found at address 0x37 !
I2C device found at address 0x3E !
I2C device found at address 0x3F !
I2C device found at address 0x46 !
I2C device found at address 0x47 !
I2C device found at address 0x4E !
I2C device found at address 0x4F !
I2C device found at address 0x56 !
I2C device found at address 0x57 !
I2C device found at address 0x58 !
I2C device found at address 0x59 !
I2C device found at address 0x5A !
I2C device found at address 0x5B ! (Mentioned by khoalam
I2C device found at address 0x5C !
I2C device found at address 0x5D !
I2C device found at address 0x5E !
I2C device found at address 0x5F !
I2C device found at address 0x66 !
I2C device found at address 0x67 !
I2C device found at address 0x6E !
I2C device found at address 0x6F !
I2C device found at address 0x76 !
I2C device found at address 0x77 !
I2C device found at address 0x7E !

[geekgirl1111]

Re: Pantum P2502W Toner Reset Chip help

I did a capture with wire shark while on wifi, but didn't have a chance to look at it.
Found an Arduino clone on sale for $10 and that they had a basic Ras Pi board for $5.
Got both and a few library books. Gonna try a hex dump. This weekend...
Has to be a way to just reset a simple adder or shift register.
And make the "allowed #of pages" increase to its max..
Now... how is the toner # generated??

[tuskiomi]

Re: Pantum P2502W Toner Reset Chip help

I'm going to hook up an I2C Sniffer some time today, and see just exactly what the printer is trying to do when it prints.

[geekgirl1111]

Re: Pantum P2502W Toner Reset Chip help

I'm at the same place. Says 4% and expected pages 671 actual pages printed 350. I just put new toner from Amazon in. I saw someone said to leave it off for a few days. So it's off right now. I'm looking at the original pics of the chip and trying to figure it out from the visible parts of the circuit board. VCC is plainly labeled. 1v??
I read that it reads the density of the toner for the %. Hummm...
A review said that when it's down to 0 it will stop printing, so I'm not going to try printing until think Of something. Didn't look at the control board pics yet, or open the thing. I'm going to use wire shark to see whats being sent.
Page count has to be a simple adder.
From youtube, It seems that all this info is on the chip.
Have to go back to my books to see how to reset an adder, or if anyone current in this stuff can post about adders if it's relevant.
I don't have a logic analyzer just a chip test board.
I was doing a search on "Bichon" chips but nada.
I'm might use wire shark to see whats being sent over. Probably no useful info.
There are chips available. One place has them. I didn't see the price.
Any body know how to build chip resetters if we figure out the chip?

[wolvmarine]

Re: Pantum P2502W Toner Reset Chip help

I had just added toner to the cartridge and now its saying its low 4%. Looks like I tripped something when I opened it. Has anyone gotten any further on this project?

If not is there a good cheap laser jet that can be refilled properly?