5. project of cooling anti-MIO

Objective:

The goal of this project is to provide a way to cool the CPU from the motherboard, without the use of the MIO-Board. Basically a small plug permutation and maybe install a special cable... that will allow the cooler Asetek to function to check the motherboard, power supply and the machine in general.

Caution:

This change in the equipment is completely unauthorized and should not be attempted by the users who have machines still under warranty. While it will be targeted toward the dawn, is should also work on the Area-51 (with little or no change).

Community participation:

Instead of only myself to work on it, I thought that I would be open to the entire material AW. I see that some of you pulling-off some pretty impressive hardware mods (swaps of after-market motherboards, power supplies, cooling systems, etc.). I have a feeling that is feasible or even a little easy. Lack of patterns of Dell, their parts and wiring custom AW, this is what makes it hard.

My machine is not broken now and I would be rather damaged in (nor would I want anyone to damage them). So we do the intelligent and not any way just to start linking things because they look like they could work.

Why:

We all know that MIO-advice fail in various ways. In some of the most serious modes of failure... the MIO-body is no longer cooling unit (pump and radiator fan) AseTek, or the MIO Board is completely shorted-out and now the keys of the power supply (prevents the computer from starting)... so it must be completely disconnected.

In the above scenario, users or technicians must be:
1 install a functioning MIO-Board in a machine that can have other main parts as bad (MB, PS, etc.)
2. remove the Asetek cooler and install a conventional radiator/fan cooler
... just to see if the motherboard (and the rest of the machine) doesn't really work (and even a setting value). Looks like a waste of time and money... When you have a perfectly good liquid cooler here... already installed on the motherboard. If the Asetek pump does not turn the machine turns off in about 5 minutes, due to the thermal overload of the processor Intel (not long enough for thorough testing, landmarks or break-in).

You cannot test the MIO Board of Directors unless the motherboard works. You cannot test the motherboard unless the MIO Board work (to run the cooler installed Asetek). It's a vicious circle. The only way is to remove the dependency on the edge for a short period MIO.

Requirements:

1 design and build a special cable (if necessary). Made of inexpensive and easily obtained materials.
2. no cutting or splicing of the existing pieces is allowed. The machine should be able to easily switch back to his original material config.

Search:

MB_CPU_Fan of the motherboard header should be an outlet for a cooler standard (and function as such).

Around 2009, when Asetek built unit for Dell (go into their first machines AW) that they also sold a unit similar to Corsair. Corsair H50 unit was able to be connected to any classic motherboard and labor. To my knowledge the unit Dell has not changed over the years. If Corsair H50 can be connected to any generic machine, so if the device of Dell-Asetek. Corsair has since moved on and now sells Design of 2nd generation of the Asetek (which has a built-in digital controller).

While the pump ends with a 7 pin connector, only 3 wires actually come from the pump. It should be-Gnd, V + and speed sensor (similar to a 3 wire fan). The cooling fan seems to be the same as all other 4-wire fans. One or both may be PWM. I'm sure that the pump runs at a speed... it's only the Rad fan, which (if any) must be variable speed.

Coolant pump Radiator fan (click to zoom) MB_CPU_FAN header
Stock

Plug 7-pole / 3-wire at pump 4-pole / 4-wire fan (PWM) Header 4-pin (PWM)

Pin 1 - Gnd (V)-
Pin 2 - 12v +.
Pin 3 - tachometer
PIN 5 - Gnd (V-) n/a

Pin 1 - Gnd (V)-
Pin 2 - 12v +.
Pin 3 - tachometer
PIN 4 - speed controller Pin 1 - Gnd (V)-?
Pin 2 - 12v +?
Pin 3 - s/o?
PIN 4 - speed controller? Verified by Devanny Sure it's good Should be. Audit needs. PIN #s as a fan 3 pin standard Fan PWM 4 pin standard

This cooler Asetek is the same that is called Corsair H50. This is what it looks like inside:

http://www.legitreviews.com/article/1025/3/

H50 connection:
Radiator fan: header MB_CPU-FAN (so it can be variable speed... not necessary but nice to have)
Pump: Constant speed. Some say instruction H50 connect to any available on MB fan header. Others say they use simple cable adapter 2 to connect to legacy Molex connector 5v/12v Power Drive (you will get a constant speed). Don't know what it puts out. I wonder if it is because they are not sure that all the headers of random fan runs at full speed, or they are worried that some fan headers can not handle amps of power at the pump in the car?

Corsair chose to leave the pump threads of different colors. Dell ordered their with all the black wires (I'm guessing that to hinder reverse engineering).

Given that Dell will not give us the list of the pins for the 7 pins on the 'high-lighting picture' header, maybe we can find out who's who by ohm - lie the son and see what terminals are marked on the bit of narcotics inside the pump control? This should be done on a dead or bad pump. Do not remove the plug 7 pin owner... use a PIN or a paper clip.

17/07/2012 added more data table
Login information for the H50 added 18/07/2012
05/10/2012 added Devanny info Asetek and H50

Solution:

I will try to document this solution better if I (or someone else) ever built.

This is not tested. Use your voltmeter to check everything. However, as long as you do not anything short or get your polarity reversed (or whatever it is also stupid) nothing should is pump up.

To facilitate the rewire the user should disconnect first the MIO Board... including power Molex, Mo USB duplicator and MB_CPU_Fan header.

Connect radiator fan on MB_CPU_Fan of the motherboard header.

Build or buy a small adapter cable and connect the CPU-pump to the Molex power which was used to power the MIO Board of Directors (or any other drive connector which has + 12vdc available).

Pump - side side of Molex power or disk

Pin 1 - Gnd (V-) - black
Pin 2 - 12v + - yellow wire

It's everything you need to connect the pump. Get you them for free with most of the 80mm fans. It is an Enermax and here I have a spare to an Antec.

http://www.Newegg.com/product/product.aspx?item=N82E16811999199

Via the yellow and black wires, you should get + 12vdc. Be sure to what translates into the appropriate pins that connect the pump cable. It should work the pump speed of 100% - 100% of the time, which is what you want.

The fan wheel is expected to accelerate adjust according to the load or at least running full speed.

Whatever it is... CPU is being cooled and you can test your motherboard without the work of MIO-Board or even connected.

Tags: Dell Products

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