Konica minolta with dead lithium batteries

[allan]

Re: Konica minolta with dead lithium batteries

Konica Minolta made the recommendation that the customer should not turn off the device to avoid the problem. I'm wondering if changing the battery while the device it's on would also be a solution... ?

You want to avoid cycling the battery. It got about 500 good charge discharge cycles...

[tsbservice]

Re: Konica minolta with dead lithium batteries

On the subject of batteries, I have a 4750 with the date in 2000 year.


When I update date and time, the panel freezes.


Anyone for a tip? I didn't find battery.

[ATTACH=CONFIG]55058[/ATTACH]

These are known for bad panels.

[tulintron]

Re: Konica minolta with dead lithium batteries

These are known for bad panels.

And is there any way out? I read something that says have nvram for the panel. True? I took it apart and didn't find it. I don't like these printers.

[tsbservice]

Re: Konica minolta with dead lithium batteries

And is there any way out? I read something that says have nvram for the panel. True? I don't like these printers.

Not to our understanding my friend. You should have spare machine with these little Lexys.
As much as I hate them they can run to pretty high counters.

[tulintron]

Re: Konica minolta with dead lithium batteries

Not to our understanding my friend. You should have spare machine with these little Lexys.
As much as I hate them they can run to pretty high counters.

thanks, bro.

[Gift]

Re: Konica minolta with dead lithium batteries

These are known for bad panels.

The failure rate is indeed higher than usual but I can't recall that symptome described by tulintron (wrong date/time, freeze after setting).

[tulintron]

Re: Konica minolta with dead lithium batteries

The failure rate is indeed higher than usual but I can't recall that symptome described by tulintron (wrong date/time, freeze after setting).

Good Morning. I'm going to the customer today and I'm going to follow your steps on setting it up in service mode.
In the end, I let you know

[Copier repairman]

Re: Konica minolta with dead lithium batteries

Be careful when replacing the button battery.
The motherboard is a board with two double-sided boards combined.
Working with a normal soldering machine can kill the motherboard.
Applied size : CR2477 button battery 3v

20221019_201449.jpg 20221019_201521.jpg

[REGSIS]

Re: Konica minolta with dead lithium batteries

LOL sorry, haven't taken any

Imagine using something like this:

CMOS Batterie CR2032 mit Stecker, Backup Lithium Batterie, Stecker ca. 3,2x4mm | CMOS BackUp | Lithium Batterien | Batterien | Akkushop

And handle it like this:

[ATTACH=CONFIG]55055[/ATTACH]

+/- colors might be wrong for artistical reasons^^

One of machines lost all of data while powered ON.
Put bizhub on its place. Working fine until I plugged in the network cable and machine froze. After that it shows Bios mode.

My question is: since it is delicate to remove battery tabs without cutting them, can I solder new battery in paralel to the old one and leave it like that as a permanent solution ( (without removing the old battery).

Old batery shows 0.31V and new one 3.06V.

According to voltage of old battery loss of data should happen long ago since machine was recently powered OFF for preventive maintenance and powered ON normally.

Not sure that drained battery is the sole reason for loss of data, all of them should be dead by now (7 years ot least).
Must be a combination of factors.

[Toxic]

Re: Konica minolta with dead lithium batteries

I just checked some battery from bizhub 420 and that thing is about 13-15 years old but battery is at 2.8v.
Propably battery quality is important, this one is Sanyo.

My question is: since it is delicate to remove battery tabs without cutting them, can I solder new battery in paralel to the old one and leave it like that as a permanent solution ( (without removing the old battery).

If old battery is bad enough it will have high internal resistance so it will not drain much curent from new battery.
You can solder new battery in paralel with old one and measure is there voltage drop.
If there is no voltage drop after few hours i think it is save to leave like that.

[Gift]

Re: Konica minolta with dead lithium batteries

I'd recomment to remove the old one or at least cut away one connection - it's not that tricky and the result doesn't have to win a model contest.
But I agree that it's unlikeliky that you'll end up in trouble soon.

[REGSIS]

Re: Konica minolta with dead lithium batteries

Managed to find a way to detach old battery without cutting the pins.
Soldered two wires on battery at one end and on pins at the other end. Secure (fixed) with tape in original position.

[REGSIS]

Re: Konica minolta with dead lithium batteries

Is it safe to update FW from GD4-E4 to GHV-M1 (prevents loss of counter & SN when battery is dead)?
Is it a too much gap beetween FW versions?
Anyone done this before?
I think GD4-E4 is function version 5. GHV-M1 is F.V. 7.

[tsbservice]

Re: Konica minolta with dead lithium batteries

Is it safe to update FW from GD4-E4 to GHV-M1 (prevents loss of counter & SN when battery is dead)?
Is it a too much gap beetween FW versions?
Anyone done this before?
I think GD4-E4 is function version 5. GHV-M1 is F.V. 7.

I think did that once with one C224e with old firmware to the new. The problem is I feel those model is somehow risky about firmware updates but I think you already know this. I like to test my limits so in your place I would jump in... but that's just me

[REGSIS]

Re: Konica minolta with dead lithium batteries

I think did that once with one C224e with old firmware to the new. The problem is I feel those model is somehow risky about firmware updates but I think you already know this. I like to test my limits so in your place I would jump in... but that's just me

"If you're not willing to take the risk, go and sell the icecream." ��
I updated the FW, all is working.
The only difference I noticed when upgrading to this particulal FW when the gap between FW versions is big that machine cannot reboot after update (it constantly reboots). I had to switch OFF/ON but everything else was fine.
It happened to me this time GD4-E4 --> GHV-M1 and before this on G20-K6 --> GHV-M1.
All the others were G20-M1 --> GHV-M1; updated according to the procedure.