What? Is it time to wake up?
Oh yeah, Dell Latitude CPX,
http://www.amazon.com/Dell-Latitude-Notebook-650-MHz-Pentium/dp/B00005UJYF
AC adapter example for above,
http://www.prontocharger.com/ProductDetails.asp?ProductCode=d1161
DC Power Jack example,
http://www.all-power-jack.com/Dell/Dell-Latitude-CPx.html
I see the dilemma. The plug from the AC adapter has 3 socket holes, and the DC Power Jack has 3 prongs.
DC electricity has a Positive connection, and a Negative connection.
To find out which socket holes are for Positive, and Negative, let's look again at the DC Power Jack,
http://www.all-power-jack.com/Dell/Dell-Latitude-CPx.html
The Top view shows the jack upside down, and turned around. (In relation to how it mounts on the motherboard )
The bottom left view shows the jack primarily how it sits, (Mounted), on the motherboard.
The bottom right view shows the jack turned over, laying on it's front.
Also laying over to it's right side.
Note the three prongs. (Flat bladed pins )
The one in the middle is Positive.
The two outer prongs are Negative.
Looking at the bottom Left view, the Top prong is Positive, and the two bottom prongs are Negative.
Match it up to the plug on the AC adapter cable.
Going to test the Voltage coming out? (20 Volts)
The red Positive probe lead goes into the top socket hole, in the plug.
The black Negative lead goes in either bottom socket hole.
What if I'm wrong?
A Digital multimeter will just show a negative value. -20
An Analog multimeter's needle will go down towards the 0, instead of towards 20 Volts. (DC)
Just switch the probe leads around.
For additional questions, or if I am way off base, post back in a Comment.
Regards,
joecoolvette
SOURCE: I have a dell Latitude cpx that wont turn on.
may be you battary is corrupted....is it old battary?
SOURCE: Dell Lattitude CPx
first be sure the battery is actually charging ..than second thing to take in mind is the Ram memory ..cause it is the first thing that computer sees for to boot..
i fthe lights came on ..and you still got no activity after you verify the ram memory in another computer .. the only thing that remain is the the cpu..but ..I thing in this case it is the ram memory ..or a power issue..
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Hmmm, looks like a reference to an AC adapter (Charger) and DC Power Jack. (DC Power Jack is the port on the laptop, that the AC adapter plugs into. may be marked as DC_IN on laptop) What manufacturer is it? Dell? What is the Model Number? (Bottom of laptop) IF, the AC adapter plug TO laptop has a center hole, and an outside cylindrical metal shell, the center hole is POSITIVE. The outside cylindrical metal shell is NEGATIVE. Post back in a Comment.
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