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[fabjan]

Hi,

The easiest way to test if you have a 1.5 is to test continuity between pin 2 of LPC and ground. On the multimeter, you should have a continuity test which make a beep when the two probe touch toegether. You put one probe on pin 2 of LPC and one probe on ground (on a screw on the motherboard). If your multimeter doens't make a beep, then you have a 1.5.
You can also use your multimeter to check the resistance, and between the two same points, if you have a value near 0 ohm, it is not a 1.5.

Fabjan

[Ferris23]

Great thanks.  Now does the Xbox need to be on for these tests?

And the only setting I need to have the multi meter on is continuity test?

I have an old school multi meter at home now, I might go pick up a digital one because the one I have doesn't do any beeping that I am aware of.

So basically assuming I have a digital multi meter like this




So if I put one probe on the LPC 2 and one on the screw( the actual screw or the metal hole around the screw?) it should read 0, does the setting on the multi meter matter?

I assume I would set it to V for voltage correct?

Sorry if I sound like a total NOOB but I'm not too experienced with a multi meter or soldering.

The soldering I am feeling fairly confident about, determining what version box I have is what has me the most concerned at the moment.  So basically its better to find out what version I have before I do anything I would assume?

Thank you again!

[hammonwrye]

[Ferris23]

edit, re test

[KetoJax]

***Never Mind***

Figured it out.

[Ferris23]

Ok, here are my multi meter settings and the reading I get when one probe is on LPC2 and the other is on a ground screw.

Can anyone tell by these pics what version I have?


Thanks!






It is set on RX100 Ohms

[Ferris23]

QUOTE (KetoJax @ Mar 16 2004, 05:07 AM)

***Never Mind*** Figured it out.

What was the fix?

[Ferris23]

Someone please help.

I am getting the same reading on my new box touching LPC 9 with the box on as I am with my older 1.0 box.

Does this mean since I have power on LPC 9 that I have a 1.4???

Where is everyone?

[hammonwrye]

Ugh, I HATE analog meters ('kay, guess that dates me).

IF I'm reading this thing right, you've got a reading of about 15 ohms BUT it's set on x's 100, so this should give you about 0.15 ohms which means pin 2 and ground are electrically connected (almost a zero reading).  Hence, a version 1.4.

Also, you said you tried checking the voltage on pin 9 (you didn't give a picture of that).  As long as you were set on Volts (DC 15 should do it) and got a reading of about 3.3 Volts (should be the same as you said on your 1.0 xbox) then pin 9 and 3.3V are connected.  Hence again, a version 1.4.

On a 1.5, pin 2 and pin 9 should read an open (i.e. not connected to anything).  You should be good!

[Lugnut]

if you put positive lead from multimeter to point 9 and put the black to anywhere on the metal casing  you should get 3.3 volts for a 1.4 xbox while its turned on,  1.5 you get nothing. With multimeter on ohms and the xbox turned off,  pin 2 on lpc to the case will have near 0 ohms for a 1.4 xbox ( meaning for most needle driven multimeters it would go up to full scale) and no reading on a 1.5 xbox  

For that radio shack multimeter since you have it set on rx100 you have to knock off a 0 on the scale, so your reading is 1.5 ohms meaning you have a 1.4 box ( if it has a focus chip )

LPC
---------------
back of mobo


-l10|9
---8|7
---6|5
---4|3
---2|1

Front of mobo
---------------

[Ferris23]

QUOTE (hammonwrye @ Mar 16 2004, 02:43 PM)

Ugh, I HATE analog meters ('kay, guess that dates me). IF I'm reading this thing right, you've got a reading of about 15 ohms BUT it's set on x's 100, so this should give you about 0.15 ohms which means pin 2 and ground are electrically connected (almost a zero reading).  Hence, a version 1.4. Also, you said you tried checking the voltage on pin 9 (you didn't give a picture of that).  As long as you were set on Volts (DC 15 should do it) and got a reading of about 3.3 Volts (should be the same as you said on your 1.0 xbox) then pin 9 and 3.3V are connected.  Hence again, a version 1.4. On a 1.5, pin 2 and pin 9 should read an open (i.e. not connected to anything).  You should be good!

Excellent, I have a picture of that coming just to verify 100%!

[Ferris23]

Ok setup is as follows


RED Probe - touching LPC 9
BLACK Probe- touching metal case

Old school Mutli meter settings -



Here is what it reads when no probes are touching



And here it what it reads when I touch the red probe to LPC9 and the Black probe to the case for ground



So this is a 1.4?
(crosses fingers)


Thanks again for ALL of your help.

[hammonwrye]

Well, it looks like you've got your voltage setting on 3 Volts.  That's why the needle is pegged at the right side (careful with that - if you peg it too hard/too many times, you'll bend it and your readings will never be right).

BUT since it appears to have voltage on it (you just don't know how much), it SHOULD be a 1.4.  Flip that dial to DC 15V (like I mentioned earlier) and your needle should go halfway between 0 and 5 on the second from the bottom line (in black).  That should be about 3.3 volts.

Like I said though, that's just for completeness.  You've got ground on pin 2 and voltage on pin 9.  If it was a 1.5, the voltage reading would be 0 even where you currently have the dial.

You've gone WAY beyond where I went when I checked my version number (1.4 BTW).  I just checked to see if I had a ground connection on pin 2.  You don't have to power up the box for that and you can just do a continuity check to see if they're connected so you don't even need a number reading.

I think you've exhausted all your checks.  You should be confident you've got a version 1.4.

[Ferris23]