Compaq 252608-001 motherboard

1. Identify the headers: Locate the front panel headers on the new case and on the motherboard. Make sure that you have identified the correct headers and that they are compatible with each other.
2. Check the pinout: Refer to the manual for the new case to determine the pinout for the front panel headers. Make sure that it matches the pinout listed for the motherboard, as mentioned above.
3. Connect the wires: Use the pinout information to connect the wires from the new case to the appropriate pins on the motherboard. Make sure that each wire is securely connected and that there are no loose wires that could cause a short circuit.
4. Connect the HDD LED: The HDD LED can be connected to pins 13 and 14 of the front header (LEDH1).
5. Connect the power LED: The power LED can be connected to pins 3 and 4 of the front header (LEDH1).
6. Connect the reset switch: The reset switch can be connected to pins 7 and 8 of the front header (LEDH1).
7. Connect the power switch: The power switch can be connected to pins 10 and 11 of the front header (LEDH1).

Make sure that you connect the wires correctly and securely, as an incorrect connection can cause damage to the motherboard or the front panel components.

Have it checked in service. This could shortcircuit the display and burn it

HP Support > Compaq Presario SR5501F > Motherboard Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01237538&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=3740354

The motherboard is made by ECS for HP/Compaq
ECS model number is MCP61PM-HM
HP/Compaq's name is Iris 8.

There is no wiring diagram per se to give you.
I'll have to detail the wiring connections step by step for you.
This may be a little lengthy.

On the link above you are looking at a photo of your motherboard.
There is also an illustration available.
I would like you to copy, and save them both.

Using this method you will be able to enlarge them for further clarity, of the connections to the motherboard.

Right-click on the motherboard photo. Left-click on Save Image As, in the list.
In the Save Image window that comes up, you will see the heading File name:
To the right of File name: will be c01237541.

Unless you want to search for c01237541 you may wish to do this:

Put your mouse cursor after the 1 in c01237541.
Left-click twice.
Make one space with your spacebar.

Type Compaq Presario SR5501F Mobo photo.
(Mobo stands for MOtherBOard)

You want this photo to go to your My Pictures folder.
(Windows XP. Different for Vista)
At the top of the Save Image window is the heading - Save in:
In the box to the right you should see - My Pictures

If you do Not you will have to change the destination.

Left-click on the blue down arrow to the right of the box.
In the list, left-click on - My Documents, then left-click on - My Pictures.
Now go to the bottom right of the Save Image window, and left-click on Save.

In the link, scrolling down you will see the heading - Motherboard layout
Left-click on the + sign next to Motherboard layout.
Copy and save it as you did for the motherboard photo.

In the File name: box type - Compaq Presario SR5501F Mobo Illustration.

Now all you have to do is go to your My Pictures folder (Start>My Pictures), and double-click on the photo, or illustration.
Left-click on the Zoom In icon at the bottom of the window to enlarge.
(+ sign in a magnifying glass icon)

Wiring Connections to the Motherboard:

A) Front Panel header: (Panel 1)

The Front Panel, is the plastic front of your computer where the Power On button, HarDDrive LED light, and Power On LED light is located.

The Front Panel header is the connections, or pins, on the motherboard, where the cables (Wires) go to from the Front Panel.

On the motherboard illustration it is marked as Panel 1.
(Down in the bottom right corner)

On your motherboard, Panel 1 (Front Panel header) is Black in color.
As you can see it is a rectangular block, and is placed vertically.
Has 2 columns of pins.
5 in the left column, 4 in the right column.

The Left column is numbered Odd.
Starting at the Top going down, Pins 1, 3, 5, 7, and 9

The Right column is numbered Evenly.
Starting at the top going down, Pins 2, 4, 6, and 8.

Pins 1 and 3 are for the HarDDrive LED light.
(HDD activity LED)
Pin 1 is for the Positive connection ( + )

Pins 5 and 7 are for the Reset switch.
Pin 7 is for the Positive connection. ( + )

Pin 9 is reserved, and may not be used.

Pins 2 and 4 are for the Message LED light. (LED = Light Emitting Diode)
Power On LED light.

Pins 6 and 8 are for the Power On switch.
There is No Pin 10.

If the cables (Wires) are not marked coming from the Front Panel, you will have to remove the Front Panel, and trace where they go.

You will be able to physically see where wires go to the Power On switch, Power On LED light, HarDDrive activity LED

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




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

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

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).


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...

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
HDR_BLNK_GRN
Out
Front panel green LED
3
HDA#
Out
Hard disk active LED
4
HDR_BLNK_YEL
Out
Front panel yellow LED
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

Hey Mike

Go back and check the fine cabling that connects LED indicaters to motherborad. There's got to be a small cable you forgot to plug into the board to feed back poer state. Take your time and check everything twice.

Fiend your solution direct from intel. Here is your solution....



http://www.intel.com/motherboard/prob676ijt65/solution

apolpo-27

The manual can be found here. There is a numbered diagram inside. http://www.eserviceinfo.com/downloadsm/5105/Compaq_Evo%20300-500.html Hack