Canon IPF-6100 re-sync CPU Board

[teckat]

mulo_g,

I think that the info has to come from the Printer; The printers Serial No# and Printhead info is unique to each machine. So, the question I am holding out for (maybe someone can ask a Canon Engineer) is,

How do you populate a CPU and MC, be they new or used, if the backup data is not there? or the existing boards are fried?

When the printer is being build new, how does that data get on those boards (e.g. Machine Serial Number)?

This is the information we NEED to know, in order to move forward.


Topstep1

=============================================
Canon had this reply to e-mail on Friday >>>>>>>>> ??

1-Do u have a Display message error E141-XXXX on display ?
2-Did u try and replace the lithium battery on Main pcb ?
in service mode>>>>SYSTEM
3- Do u see the Printer S/N under {System Info} ?
4-What messages are shown under Error Log ?
5-Check connector J5 & Pin 2-3 (EPROM control signal) on Carriage pcb

Reply added > if u did a replacement mode procedure by mistake & no serial number is memorized in either EEPROM, enter the PCB replacement mode again .

Typical Canon answer > looks like manual stuff >did not reply about my CPU ?

================

received this today from tech

when u first did the replacement procedure for Main (CPU) PCB the data was automatically transferred to EPROM on MC Relay PCB - it's in there

did u go back in Replace Mode procedure and select MC-BOARD to transfer back to Main CPU ??

he also said check those connectors on Main Pcb.

[Canuck]

Try a new MC pcb. I'll get a rough price on Monday.

[mulo_g]

Try a new MC pcb. I'll get a rough price on Monday.

It will be interesting to know the result. I am (and many people are) eagerly waiting to see how this Big Canon mystery is solved.

Some people on another forum also think PCB has gone. A point to note is my MC relay MCB showed serial number blank when I did the main PCB replace procedure, and then it landed in close uppercover error permanently. An important point is that before proceeding to do the change procedure the printer had gone to replace procedure on start. So, the chances are one or both PCB's sre dead.
And, why some people suggest various steps in service mode when printer is unable to go to service mode!
As suggested in some other forum I swapped the sensors, but no improvement.
Regarding connector signals, any hints what should it show on multimeter?

Awaiting your results.

[mulo_g]

Try a new MC pcb. I'll get a rough price on Monday.

Did you try new MC pcb? and the price?

[teckat]

It will be interesting to know the result. I am (and many people are) eagerly waiting to see how this Big Canon mystery is solved.

Some people on another forum also think PCB has gone. A point to note is my MC relay MCB showed serial number blank when I did the main PCB replace procedure, and then it landed in close uppercover error permanently. An important point is that before proceeding to do the change procedure the printer had gone to replace procedure on start. So, the chances are one or both PCB's sre dead.
And, why some people suggest various steps in service-p- m--_. ode when printer is unable to go to service mode!
As suggested in some other forum I swapped the sensors, but no improvement.
Regarding connector signals, any hints what should it show on multimeter?

Awaiting your results.

Note-___there are many Canon products that will let u enter service mode- even when error codes or messages are present on printer--- in your case that step is not available on product -- seems like an overlook on Canons part (

[Canuck]

According to the documentation on this printer, when it errors power down and reboot in service mode(info and paper source buttons). It should add service mode to the main menu options list that you can move to. Then you can select it. Never tried it on one of these but its on page 7-1 in the manual. Slipped my mind about MC board. Check Monday

[lessbones]

@Canuck

I realize this is a FULL DECADE LATER, but I thought I'd dredge up this topic as I've got some thoughts on this issue that I am currently dealing with right now. Long story short, I've got a couple of ipf9400s, one of which I've had for a very long time and replaced tons of components on. I generally reset the maintenance cartridges on these printers over and over with the service mode, and I had one recently with an intermittent chip due to it having some ink spilled on it. I attempted to reflow the solder on the chip, and I accidentally blew away the tiny resistor in the R1 position. Now the dumb part. Instead of just throwing it out, I decided to simply short the pins where the resistor had been, thinking that there couldn't be any harm done besides the MC simply not working. Well that was wrong. I inserted the new maintenance cart, which didn't seem to read at all, and upon restarting the machine I had a 404E error.

Here's where I'm at now: I tried swapping the MC Relay board with one from an ipf8300 that I have around for parts, but that just gave me a 404D error-- "mismatched ID between main board and mc relay". That's when I stumbled upon this post, and I've made a few conclusions based on it. Basically every other thread on this subject comes from someone in my position-- the MC Relay board failed for whatever reason, and now the user can't enter service mode to perform the PCB swap procedure because the error blocks it. Your case is different-- you started the procedure BEFORE swapping parts (or not swapping them in your case) so you BEGAN with matched parts. Now you can't kick it OUT of SMB replacement mode. Seems like this so called "SMB Replacement Mode" was never actually implemented in this printer. Someone please correct me if I'm wrong, but it doesn't seem like you can initiate it without having a pair of good matched boards, which makes it useless for any repair situation, and even if you do start it with matched units, you can't leave the procedure.

Now i'm not sure this would help in your situation, but what I'm going to attempt to do is re-write the EEPROM chip using an external programmer so that I can match the board ID, bypassing the whole printer-internal procedure. I'll report back as to how it goes.

[lessbones]

So, kind of unbelievably even to me, I was able to fix it!

Turns out I didn't need to even get an EEPROM programmer to do it in the end, although that part of the journey was interesting in itself.

The MC relay board is nothing more than a holder for an ATMEL (or clone) 24C256 serial eeprom chip. What I thought I was going to have to do, given the "mismatch" error with the board from the 8300, was to program some data saved in the main board eeprom of the same type. I went ahead and dumped the data of both chips from the 8300 and while similar, the data wasn't exactly the same, so I was a bit worried about whether or not it would work or I'd be able to figure out exactly what I needed to put on the MC chip. However, I had ordered a 10 pack of these EEPROMs (like $3 or something) and I decided just to go ahead and solder a blank one in place of the dead chip onto my existing MC relay board.

Sure enough, when I turned on the printer in service mode, it kicked me in to "replacement mode" ! From here it asked me which I wanted to replace, the main PCB chip, or the MC relay chip (and showed the serial numbers of both, the relay's being blank). I chose the relay chip, it said executing.... completed! I shut the printer off, back on in service mode and it said no maintenance cartridge. Progress! I inserted a maintenance cart and.... nothing. Seemed not to recognize it. From here I powered off and back on again, in normal mode this time, and it came back up normally!! Everything all good! Not bad for $3 bucks plus shipping!

So TLDR version, if you have an issue with the mc relay board of a canon ipf 8xxx or 9xxx or i'd imagine even a newer or older model, and you're not scared of a little soldering, replace the EEPROM chip on the MC relay board. Again it's a 24C256 model.

hope this eventually helps someone.... although I doubt the chances of anyone actually reading this are particularly high at this point.

[teckat]

So, kind of unbelievably even to me, I was able to fix it!

Turns out I didn't need to even get an EEPROM programmer to do it in the end, although that part of the journey was interesting in itself.

The MC relay board is nothing more than a holder for an ATMEL (or clone) 24C256 serial eeprom chip. What I thought I was going to have to do, given the "mismatch" error with the board from the 8300, was to program some data saved in the main board eeprom of the same type. I went ahead and dumped the data of both chips from the 8300 and while similar, the data wasn't exactly the same, so I was a bit worried about whether or not it would work or I'd be able to figure out exactly what I needed to put on the MC chip. However, I had ordered a 10 pack of these EEPROMs (like $3 or something) and I decided just to go ahead and solder a blank one in place of the dead chip onto my existing MC relay board.

Sure enough, when I turned on the printer in service mode, it kicked me in to "replacement mode" ! From here it asked me which I wanted to replace, the main PCB chip, or the MC relay chip (and showed the serial numbers of both, the relay's being blank). I chose the relay chip, it said executing.... completed! I shut the printer off, back on in service mode and it said no maintenance cartridge. Progress! I inserted a maintenance cart and.... nothing. Seemed not to recognize it. From here I powered off and back on again, in normal mode this time, and it came back up normally!! Everything all good! Not bad for $3 bucks plus shipping!

So TLDR version, if you have an issue with the mc relay board of a canon ipf 8xxx or 9xxx or i'd imagine even a newer or older model, and you're not scared of a little soldering, replace the EEPROM chip on the MC relay board. Again it's a 24C256 model.

hope this eventually helps someone.... although I doubt the chances of anyone actually reading this are particularly high at this point.

Now that is how you attack an issue !!!!!!!!!!!!!!!!

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