how to test a Mother Board step by step with Black screen and no Beep

[K C]

Can you convert the schematic Protel files to PDF or Postscript or ??

I cannot read the Protel files and I don't have a viewer.

[rickgyles]

Hi KC,

here itis in PDF

thanks

     Rick

[K C]

Ohh beautiful     one big sheet with all components. To bad I don't have a A0 printer 

Do you also have a partlist. They are not mentioned in the schematic.

Do you have more descriptions then your first post ? or anything else....

[rickgyles]

Sorry normaly I work with Protell there you click and You know it

You think just the IC'S should be Ok?

1) U1 = Winbond, W29C020C

2) U2= ICS,  ICS9169M

3) U3= Geode, GX1 200B-85 1,8

4) U4= Maxim,  MAX211EAI

5) U5, U6= Texas ins., LV573

6)U7= Geode CS5530A

7)U8 = Pulse PE-68515L

8)U9= National PC97317ICL/VUL

9)U10= National DP83815DVNG

10) U11 ST 93C46

11) U12,U13,U17 = LT, LTC1149 (3,3V 5V, 1,8V)

12)U14, U15, U18= Fairchild, FDS4559

13)U16 = Maxim, MAX6357LSUT

14)U19 = Texas Ins. TPS2211

15)U20= Philips, 74HCT138D

16)U21= Dallas DS1621

17)U22= Texas Ins PCI1510

18)U23= M-System MD-2810-008

19)U24= Philips, 74HCT139D

[rickgyles]

The Problem what we find sofar is that on SDCLK0 and SDCLK1 of the U3 is no CLOCK output

on the data sheet it says on page 114 you can programm then enable or disable so we think have to Program the U3 some how

Ifound the following tool http://www.fs2.com/pdfs/SNAV-GX.pdf

is that the right one and does NI have somthing like that.

Thanks again

                Rick

[K C]

OK, I will have a look at it all.

What is the link with NI ?

[K C]

Hi Rick,

The last link you posted is for an AMD proc. I don't know if it compatible with the NSC proc.

This means that you don't have a tool to verify that the BIOS prom (U1) is programmed correctly ?

Do you have a keyboard/monitor attached. Is there any output  ?

If not, for a start can you verify that the boot proces is started after a HW reset by measuring the #CE (pin 22) signal  MEMR# (pin 24) at U1

Message Edited by K C on 12-19-2007 11:54 AM

[rickgyles]

Hi KC.

Bios should be all right as we got one working Unit and we swapped the Bios Chip and works fine we tried all Program IC's all seem to work fine on the working unit.

We don't have a Display as it is normally just used as a satellite in a Network.

NS sold Geode to AMD so this link was from AMD for debugging and maybe programming the GX1?

As we think that there is a small program on the Processor GX1

We will try to swap the GX1 but waiting for the Reball station as it is a BGA

Thanks

        Rick

[K C]

Normally I would not start replacing components before you are sure that it is necessary. But when you are desperate.....................

If you don't have a monitor connected how do you observe that the board is working or not

What OS runs on the disk ?

[K C]

Well I see the answer in the title  

On a working board do you see the BIOS startup like you see with a 'normal' PC ?