Things to note when removing the CMOS battery on the ES3005AC?

[person4268]

I have a e-Studio 3005AC, and I'm planning on removing the SYS board for some cleaning (rust/corrosion near and somewhat on the board, I'm aware that it's probably best to just replace it). Is there anything in particular I need to worry about when removing the CMOS battery? There's no mention of it in the SM, but I would presume one might have to hold down the energy saver button when powering on?

I also have two other questions:
- Does any 4gb ddr3 ram stick work? It looks mostly to just be standard Samsung DDR3 ram, and it isn't looking too hot either.
- Is the SRAM ic a bit of a misnomer? Is it actually backed by the CMOS battery (I would assume it isn't and it's actually non-volatile, looking at its datasheet).

Thanks.

[mojorolla]

Re: Things to note when removing the CMOS battery on the ES3005AC?

I have a e-Studio 3005AC, and I'm planning on removing the SYS board for some cleaning (rust/corrosion near and somewhat on the board, I'm aware that it's probably best to just replace it). Is there anything in particular I need to worry about when removing the CMOS battery? There's no mention of it in the SM, but I would presume one might have to hold down the energy saver button when powering on?

I also have two other questions:
- Does any 4gb ddr3 ram stick work? It looks mostly to just be standard Samsung DDR3 ram, and it isn't looking too hot either.
- Is the SRAM ic a bit of a misnomer? Is it actually backed by the CMOS battery (I would assume it isn't and it's actually non-volatile, looking at its datasheet).

Thanks.

SRAM is the 8 pin EERPOM chip on the SYS board. CMOS simply slides into the holder on the board.
The EEPROM is non-volatile, and values will not change if removed.
Not certain about the DDR# sticks

[person4268]

Re: Things to note when removing the CMOS battery on the ES3005AC?

I ended up getting it working somehow, here's what I noticed:
- The machine would not turn on whatsoever with the original RAM installed. The resistor packs (?) near the connector were quite damaged, along with other parts of it. In its original state, the machine was quite intermittent in crazy ways (mostly not booting at all, booting into "Starting recovery mode", booting into HS mode and asking for a firmware update, signature check failing when updating, various grub/bzImage errors, and the one time I got it to fully boot, one test pattern were corrupted and the back side of any page printed was corrupted, and also at one point it worked perfectly for like 3 days.). It was quite bad.
IMG_1162_e.jpgIMG_1161_e.jpg
- With a 2Rx8 RAM stick, the machine would get to 2/9 and power off. Holding the energy saver button caused it to not boot at all.
- Somewhere between then and now, I briefly removed the CMOS. Didn't seem to really affect anything much.
- I swapped in an SK Hynix 1Rx8 RAM stick I salvaged from a laptop, and it appears to be working just fine. I got the Starting Recovery Mode screen once, but it either went away with a reboot or by me holding down the energy saver button on power on (look, I tried a lot).

I don't expect to not get other issues; the legs of the SRAM chip have visible corrosion on one side, and the SYS board has rust in various spots, and there's rust on the SYS board cover and the back cover where the board cover fan grilles are. Not really sure how that happened in its past life, but they did store it in a garage so probably to do with that.

Now I guess I have to see if I can fix the registration on magenta somehow, it's off in the crossfeed direction and only in the center of the page. Don't really want to have to replace the developer material and all that (I'm not really sure what the issue is, tbh, SM wasn't of help at all, but it is a bit behind in PM especially when it comes to drive counts), so I might just deal with it if that's what it comes down to.

Also, of course, as with all intermittent issues, I possibly have fixed absolutely nothing and will be having a lot more fun in a couple days.

[mojorolla]

Re: Things to note when removing the CMOS battery on the ES3005AC?

I ended up getting it working somehow, here's what I noticed:
- The machine would not turn on whatsoever with the original RAM installed. The resistor packs (?) near the connector were quite damaged, along with other parts of it. In its original state, the machine was quite intermittent in crazy ways (mostly not booting at all, booting into "Starting recovery mode", booting into HS mode and asking for a firmware update, signature check failing when updating, various grub/bzImage errors, and the one time I got it to fully boot, one test pattern were corrupted and the back side of any page printed was corrupted, and also at one point it worked perfectly for like 3 days.). It was quite bad.
[ATTACH=CONFIG]61395[/ATTACH][ATTACH=CONFIG]61396[/ATTACH]
- With a 2Rx8 RAM stick, the machine would get to 2/9 and power off. Holding the energy saver button caused it to not boot at all.
- Somewhere between then and now, I briefly removed the CMOS. Didn't seem to really affect anything much.
- I swapped in an SK Hynix 1Rx8 RAM stick I salvaged from a laptop, and it appears to be working just fine. I got the Starting Recovery Mode screen once, but it either went away with a reboot or by me holding down the energy saver button on power on (look, I tried a lot).

I don't expect to not get other issues; the legs of the SRAM chip have visible corrosion on one side, and the SYS board has rust in various spots, and there's rust on the SYS board cover and the back cover where the board cover fan grilles are. Not really sure how that happened in its past life, but they did store it in a garage so probably to do with that.

Now I guess I have to see if I can fix the registration on magenta somehow, it's off in the crossfeed direction and only in the center of the page. Don't really want to have to replace the developer material and all that (I'm not really sure what the issue is, tbh, SM wasn't of help at all, but it is a bit behind in PM especially when it comes to drive counts), so I might just deal with it if that's what it comes down to.

Also, of course, as with all intermittent issues, I possibly have fixed absolutely nothing and will be having a lot more fun in a couple days.

Oh man, as Neil Young once sang, "rust never sleeps".
With that level of corrosion, you are most likely beating a dead horse.
If the SYS board looks that bad, your clutches, solenoids, connectors and other metal parts will be in the same condition, or worse
Just my humble opinion but, you are going to have constant struggle with a machine in that condition.

[tsbservice]

Re: Things to note when removing the CMOS battery on the ES3005AC?

Oh man, as Neil Young once sang, "rust never sleeps".
With that level of corrosion, you are most likely beating a dead horse...

I think Neil at some point had/have Mazda like me.

Aside from me joking your answer is spot on this machine is for experience and experiments... but not for faint hearted

[person4268]

Re: Things to note when removing the CMOS battery on the ES3005AC?

Oh man, as Neil Young once sang, "rust never sleeps".
With that level of corrosion, you are most likely beating a dead horse.
If the SYS board looks that bad, your clutches, solenoids, connectors and other metal parts will be in the same condition, or worse
Just my humble opinion but, you are going to have constant struggle with a machine in that condition.

[SalesServiceGuy]

Re: Things to note when removing the CMOS battery on the ES3005AC?

I have had copiers in underground mines shafts. After three years, the copiers were so badly corroded frm all of the dampness and humidity that we would not put a service contract on them. The copier got replaced after three years.

[Blizzoo]

Re: Things to note when removing the CMOS battery on the ES3005AC?

Usually in that area where the Fan is will be a nice accumulation of dust over time. And dust can help retain moisture affecting electrical contacts. No point replacing M developer, Drum as it's not the cause of this.

I would remove the SYS Board and clean it with some contact cleaner, maybe helps.