Does anyone know........

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

Threaded View

What the "panel" connections are on a Hewlett Packard P3C-D Rev 1.13

The motherboard itself is a Asus one but has the HP 14 pin "panel"
block for HD Led/ Reset / power etc instead of using the 20 pin one
supplied by Asus.

I have done the obvious with google and came up with zilch.

Thanks in Advance


Re: Does anyone know........

Ken wrote:
Quoted text here. Click to load it

Did you see if the information was on the HP web site?  When I was
working on my nephew's HP computer, I download the need information
directly from HP.

Re: Does anyone know........

Quoted text here. Click to load it

Thanks I have found what I was after in google groups :-)
Now to try and rig it up in a normal case........................


Pin 1 => B1_LCD1
Pin 2 => B1_LCD2
Pin 3 => Ground
Pin 4 => PWR_LED_A
Pin 5 => HDD_LED_K
Pin 7 => ON_OFF
Pin 8 => RED_LED_A
Pin 9 => Ground2
Pin 10 => HDD_LED_A
Pin 11 => _RESET
Pin 12 => SDA
Pin 13 => VSTDBY_3V
Pin 14 => SCL

Re: Does anyone know........

How do you count the pins...? (there are no markings.) I have the same
MB and the same trouble. By the way, the On_Off pin should be pulled
down (grounded) or pulled up (+v)??

I am about to trash the board... I won't come up...  :cry:


Re: Does anyone know........

On 10 Mar 2005 22:16:33 -0500, (MRGiam) wrote:

Quoted text here. Click to load it

Pin 1 is usually in the top left corner, all you have to do
is figure out which is the top left corner.  Often there is
a little silkscreened arrow or other marking for pin 1.

The easiest way to determine pinouts on these OEM boards is
to look at the OEM wiring harness that was used with it.
That "must" go to the front LEDs, switches, etc, so a simple
continuity check with a multimeter will reveal which pins
are which.

An alternate method for those ambitious would be to take a
resistor, say 100 ohm, and touch it very briefly to each pin
with the other end grounded.  When touching the pin that
turns system on, you then only need check the other pins
(start with those adjacent) to find the ground.  Ground plus
that pin will go to the switch.  It is possible the OEM only
used one or two ground pins rather than a ground for each
front panel "component" (like LEDs, switches, etc), in which
case you'd need to split the ground into several leads to go
to each component, unless of course you still have that OEM
wiring harness and connectors and/or circuit board, then do
whatever seems appropriate per the new case.

Frankly it's easier to just reuse same OEM case and wiring
instead of redoing it all.

Site Timeline