hardware hell (obviously a 486)

**Weedman** · 08-25-2005

hello

my problem is that i put my olivetti 486 back together after about 6-10 months and it somehow had a problem come up.

the problem is that it shows up (on the diagnostic LED display):

Code:

CMOS Periodic Init Err

2 questions
1. what does this mean?
2. how do i fix it?

i have looked around for a cmos reset jumper, and found a possible jumper, but i am not confident that it is the right one.

any help would be appreciated

weed

**LondoJowo** · 08-25-2005

I suspect that the CMOS battery is low and the BIOS is not properly initializing. Replace the battery, boot, enter BIOS, modify setting as needed, and you should be good to go.

**Weedman** · 08-25-2005

i understand, however i dont know and cant seem to find the cmos battery

EDIT: would you call a "Dallas Real Time clock chip" a cmos battery?
i have a funny feeling that it is...

**LondoJowo** · 08-25-2005

You didn't give the computer model but I did find manuals for the Olivetti.

http://www.ics-finmek.com/ics/swtool...ls/System1.htm

**LondoJowo** · 08-25-2005

Originally Posted by Weedman

i understand, however i dont know and cant seem to find the cmos battery

EDIT: would you call a "Dallas Real Time clock chip" a cmos battery?
i have a funny feeling that it is...

No, it should be a thin battery the approximate size of US quarter.

**Weedman** · 08-25-2005

mine seems close enough to a M486 ESDI.

it doesnt show a battery in the diagram...

EDIT: i went and searched up the Dallas Clock chip and i found that it pretty much well is a cmos battery

i dont know what the hell im doing now

**LondoJowo** · 08-25-2005

Does it look like this Dallas Clock chip is removable without de-soldering?

Unless you're skilled at micro-minature repair I don't recommend trying to desolder and replace the chip as you can render the motherboard useless.

**Weedman** · 08-25-2005

yep, it looks like it will come out with a chip puller and not a soldering iron.

i will add a Dallas clock chip to my shopping list.

one last question
What happens if the new clock chip doesnt work?

**LondoJowo** · 08-25-2005

one last question
What happens if the new clock chip doesnt work?

A small quantity of C4??

**drakebasher** · 08-25-2005

Check this thread, Weedman. Includes a link for Dallas clock chip for $20!

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