Question about Compaq (253219-002) Motherboard

2 Answers

Compaq 252608-001 motherboard

I bought a used motherboard with no manual, i'm having some trouble in connecting the power switch cable, power led cable, cpu led cable.
can u help me?
thanks

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  • Anonymous Nov 24, 2008

    I got the same problem, I can't find anything you have written like pwr switch or hddled

×

2 Answers

Its not written on the board...
All that's written on it is the P codes, which are damn hard to read as it is, never mind trying to read anything on it...
Spkr and HDLED, and PWRLED are all marked, but the pwr and reset arent... or if they are, i cant find them

Posted on Jun 07, 2008

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  • Master
  • 652 Answers

Hello sosumo,
see carefully on the board there might be some sign like:

  • HDD-LED
  • PWR SWTCH
  • SPKR
  • RSET
  • PWR LED
These are the points on your board where you have to connect frontpanel connections.

For more details goto HP website and search manual for your product using your board's model no.

Thanks
Iqbal

Posted on Apr 21, 2008

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1 Answer

I have motherboard Compaq #277498-001 and can't find power sw


Not sure of your particular MB, but most always the switch is a pair of pins in an array where the front panel LEDs and reset and power switch are.
This array of pins is almost always at the lower right hand side of MB. Assume the components side is facing you and the expansion slots are at your left hand, (where you add extra cards like video etc). then look at the lower right side or bottom edge, mostly right at the edge of the board. Should be an a double row of pins, at least 8 maybe up to 12. Look real close next to these and you may see print indicating which pair do what. PS = power switch. RS = reset, HD = Hard drive LED PLED = power led light.Spk internal beep speaker etc. (Note LEDs require correct polarity to work) Sometimes no print there.. Then you need the manual to decipher pin pairs. Or experiment. All you need to do is make the connection momentarily (like push button) with a small screw driver tip to start it, while looking for correct pins.
If no power on check your power supply connections on the MB. Or suspect either MB or Power supply issue.

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How to wire front panal


You will need to open the computer case and check that the cables that run from the actual power button to the motherboard are plugged into the proper spot on the motherboard. Sometimes reseating the cable can fix this issue.

I think this is the link to your motherboard documentation: http://www.via.com.tw/download/mainboards/3/4/p4mapro533_r100.pdf

Check the page 2-14 or 2-15 and see if that helps you to identify the actual connection for your power switch.

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Here is the manual for your motherboard (since describing a diagram probably isn't very useful...)
http://dlcdnet.asus.com/pub/ASUS/mb/socket939/A8N-SLI/e2024_a8n-sli.pdf

You want to look at pages 27-35, they describe what you need to plug into the motherboard. Basically make sure you have connected:

1) 24-pin power cable (from power supply)
2) 4-pin power cable (for CPU from power supply)
3) Any case fans with 3/4 pin connectors.
3) hard drives (SATA or IDE)
4) USB front panel ports
5) Audio front panel ports
6) Case plugs (power LED, hdd LED, power switch, and reset switch).

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1 Answer

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u need the user manual or see the board there is information on board
c9a0fdf.jpg

9ab1f86.jpg

this are the connector u have to connect this pin to front pannel

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1 Answer

Lookig for a manual for an fic au13 motherboard


Front Panel Block Cable Connections

f_Panel

1 3 5 7 9
. . . . .
. . . .
2 4 6 8

1] HDD-LED (+)
2] Dual Power-LED* (+)
3] HDD-LED (+)
4] Dual Power-LED* (-)
5] Reset Switch
6] Power Switch
7] Reset Switch
8] Power Switch
9] Dual Power-LED* (**)

* Single Color Power-LED 2 or 3 pins:

[.] . .
1 2 3

1]Power-LED (+)
2] GND
3] GND


** Dual Power-LED:
if useing dual power LED,
Green: pin2
Yellow: pin4
otherwise, Pin2 is positive (+) Pin4 is negative (-

For future Reference you can download your manual directly from the manufacturer's website HERE
Or directly from HERE

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Hi,

Generaly, the little connectors on the printed side will face the bottom of the case. Also, typically, Black is negative, and white/colour is positive (except on the power sw, it doesn't matter). On the motherboard, where the connectors go, there should be some kind of print saying where to plug them in. (IE, POWER SW, would go into PWR, and HDD LED would go into HDLED and POWER LED would go into PWRLED).

b0dcbba.jpg
It may look different than this, but generally the same kind of layout, as you can see, it shows the positions, as well as positive and negative.

Unfortunetely, I can't seem to find a schematic for the Compaq 277977-001 motherboard. I will try and find one, but I hope this helps you out with what you are trying to do...

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4 Answers

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Connecting the Front Panel Header

Table 6. Front Panel Header (J9H3)
Pin

Signal
In/Out
Description
Pin
Signal
In/Out
Description
Hard Drive Activity LED
Power LED
1
HD_PWR
Out
Hard disk LED pull-up (330 ω) to +5 V
2
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Out
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3
HDA#
Out
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4
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Out
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Reset Switch
On/Off Switch
5
Ground
Ground
6
SWITCH_ON#
In
Power switch
7
FP_RESET#
In
Reset switch
8
Ground
Ground
9
+5 V
Out
Power
10
N/C
Not connected

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