Epson WF-7210 - Cartridge not recognized after printer switches off

[Sattva]

Hello.

I recently bought Epson WF-7210 and installed InkSystem CISS (continuous ink system for Epson). But it says cartridge not recognized after printer switch off.

Main Firmware: SA29H8
Network Firmware: 0B.3A
Firmware: 0B.3A.SA29H8
Printer usually says it has a new firmware - go to Settings and Update.
But I don't do it bacause CISS seller said ChipReseter may not work after firmware update.

I do understand the problem is in the chip that used with CISS.
Found the one at aliexpress:
https://www.aliexpress.com/item/UP-...le-for-epson-WF-7110-WF-7610/32920468372.html

Asked seller about it and he answered:
New chips works for WF-7710 WF-7210 WF-7715 new model printer.

Please tell who has the same problem?

The local seller of CISS says it is normal for this printer model.

I fond of electronics on some middle level.
Recently have bought logic level signal analyzer.
So who knows... possibly I will need to hack the chip.

And yes, it has the battery and it has 3.0 Volts both on battery and on PCB pins.

 

[Sattva]

When I turn off turn / turn on the printer it says: cartrudge not recognized.
1. Need to reset the chip.
2. It initialize the printer during 5 minutes.
3. Printer works fine.
4. I turn off the printer.
5. Turn on the printer.
6. Cartrudge not recognized.
7. Reset cartridge chip.
8. It initialize the printer during 5 minutes.
9. Printer works fine.

It is not fun if electricity switches off, then again Reset cartridge chip and it initializes the printer during 5 minutes.

 

[Ink stained Fingers]

Can't you just keep the printer on power in power saving mode ? Is it that just one cartridge is not recognized or all of them ?

 

[Ink stained Fingers]

The best would be this approach - using a firmware mod making the printer chipless, the WF7110 is supported, the predecessor to your printer, and the WF7710 as well, the successor, you may contact them to check the status for the WF7210
https://chiplesssolutions.com/support.shtml

 

[Sattva]

using a firmware mod making the printer chipless

Thank you. This looks like a good solution. It is a little bit scary to upload some
illigal firmware, but it should work.

Can't you just keep the printer on power in power saving mode?

I can keep it on. Even use UPS, but all in all the electricity may turn off.
At my village it happens 2 times per month for 2-5 hours.
So no electricity - no sleep mode.

Is it that just one cartridge is not recognized or all of them ?

At my avatar there is this chip. It consists of 4 united chips for each cartridge on one PCB.
It is hardly possible to check each one separately.

 

[Sattva]

The Chip - no way to check each cartridge separately.

 

[The Hat]

@Sattva, You could try exchanging the battery for a new..

 

[Ink stained Fingers]

Is it that just one cartridge is not recognized or all of them ?

I was thinking about the printer status monitor - what is the status monitor showing - all cartridges not recognized ? or just one of them ?

The local seller of CISS says it is normal for this printer model.

I'm afraid that there is no work around for your problem if this is the normal situation with this chip set. The battery with the reset button is supposed to eliminate the need to reset typical ARC chips per cartridge by taking them out for refill and reset when inserting them again. If you would switch to normal ARC chips you would have to do that - with the ink tube attached but you wouldn't have your problem at every power up cycle.

 

[Sattva]

@Sattva, You could try exchanging the battery for a new..

This is very good idea. I hope will try and make a video with explanation.
Also decided to buy a new Chip from AliExpress seller.
Will write in 2-3 weeks about result.

 

[Sattva]

The battery with the reset button is supposed to eliminate the need to reset typical ARC chips per cartridge by taking them out for refill and reset when inserting them again.

You are 100% right. The only point I would like or even
MUST understand how the Chip works in details.
This is in case new chip from China will not help.