Centurion 1 386Dx sram

[dresda]

Hi, my machine has a battery on the main board and a Ext, battery 3.6 volts. Also another ext, battery coming from one of the boards connected to the main board.
I have replaced both of them but still get Sram and Bios on start up and have to key in data before I can run.
Why is there an external battery next to the battery on the main board and the little 4 pin plug I can flip around 180 degrees with no change?
Should I remove the battery from the main board and solder the battery to that?
Thanks.

[sportybob]

Dresda, The 386 M/B came with a internal battery. It looks like a blue electrolitic cap. Next to this battery is a jumper for int or ext battery. This selects where the battery voltage will come from. set to ext and install a external battery + to pin 1 - to pin 4.
you will need to run a CMOS set up. contact Milltronics service and ask for a copy of the CMOS set up entry.
Milltronics also has a new battery available if needed.

Check the old battery for corrosion. clean or remove the old battery. If corrosion gets into the mother board. It's time for a control update.

I belive the latest update for the C1 and C5 -B and newer controls is $1875 US. this will get you a lot of new functions and capibilities.

BTW C5 controls with serial #'s that are 3 digits ie: 178 or that have a -A IE 178-A are not readily updatable. these controls have acro and sime disks that can not be used with newer Mother boards and software and will need to need updated to a C7 control. If the iron is good it may be worth the costs of a C7 update. Be careful of what is for sale on flebay I see alot of no usable -A and earlier stuff out there.

[dresda]

Thanks sportybob, I will look for the jumper. Is pin 1 on the left or right?
I have just started playing with this machine and I find it very user friendly, I was going to retro-fit it with something but will wait until breaks down big time.
I have another question. I was trying to put an 'O' ring groove in a the face of a casting, just a rectangle and i tried to use the rectangle frame milling but it always leads in out out, is there a way to not use the lead in/out, I can program in the MDI or G code but thought I would try the conversational side.
Thanks.

[wcopley]

use the pocket feture not frame if avalable

[dresda]

The pocket feature wants to start in the middle and work it's way out, I just want to machine a groove.
I have done now with lins and arcs, but would have been nice to use the framing cycle without the lead in and out.
Other problem with my machine is it's has an R8 spindle so you can't make a program with multiple tools because you can't set your tool lengths before hand unless you have a quick change collet system, 40 taper would be nice.
Anybody know of a good quick change R8 system?
Thanks.

[ZZZZ]

Royal Products makes a nice one:

Royal Products