background image

GND

+

    Switch Logic

6-24V DC-DC        

ATX PSU

      PC 

ATX 

power  

Mother Board 
ON/OFF 
switch

M1-

Battery

 Ignition SW

 -

 +

 6

 Serial ctlr

 4

 2

8bit MCU

 Amplifier 
 Enable

 8

Reverse and   

forward protection

 Status LED

M3-ATX

6-24V Intelligent ATX Power Supply

Installation Guide

Version 1.0b

P/N M3-ATX-01

Before you start…

Please take a moment and read this manual before you install the M3-ATX in your 
vehicle. Often times, rushing into installing the unit can result in serious damage 
to your M3-ATX board, computer and probably your car’s electrical system. 

Always

double check the polarity

 of your wires with a voltmeter.

Avoid using the cigarette plug as a power source, often times the contacts are not
capable of delivering high current to your PC.

Introduction

Thank you for purchasing the M3-ATX power sequencer / vehicle ATX power supply.

The M3-ATX was designed to work with a wide variety of main boards such as the VIA
mini-ITX motherboards as well as Pentium-M /  Celeron or full power Pentium systems. 

 M3-ATX Logic Diagram

Summary of Contents for M3-ATX

Page 1: ...hing into installing the unit can result in serious damage to your M3 ATX board computer and probably your car s electrical system Always double check the polarity of your wires with a voltmeter Avoid using the cigarette plug as a power source often times the contacts are not capable of delivering high current to your PC Introduction Thank you for purchasing the M3 ATX power sequencer vehicle ATX ...

Page 2: ...o motherboard s ON OFF pin headers THUMP white to connect to amplifier remote ON OFF connector Wire harness for motherboard ON OFF switch and Thump control optional Wire harness for serial connection IMPORTANT Always use the Hibernate feature on your PC never use Standby P0 In this mode the M3 ATX behaves like a regular ATX power supply P1 Sends ON pulse to motherboard when ignition is ON for more...

Page 3: ...he computer is in the suspend mode it will consume even more power because the RAM needs to be powered at all times No matter how big your battery is you will eventually drain it if proper actions are not taken The M3 ATX is addressing these issues by cutting off the 5VSB rail after a pre defined amount of time see jumper chart HARDOFF During the HARDOFF if the battery level drops below 11 2V for ...

Page 4: ...he on off switch if you don t want your PC to be started automatically Troubleshooting a Motherboard is not turning ON Check input cables Make sure you have a a well tighten wire harness Measure the un switched pin red You should see 12V car on or 0V car off NOTE In P1 P2 P3 modes if V In is 12V the M3 ATX will not start b Motherboard is not turning ON cont Ensure total system power consumption do...

Page 5: ...ures de rate by 25 50 ventilation will be required 12V Rail Output Current buck boost converter Input V 12V out current Input V 12V out current 6 8V 4A 6A peak 11 16V 6A 8A peak 8 11V 5A 7A peak 16 24V 4A 7A peak Support and warranty Standard Hardware Warranty 1Year US 2 Year EU Installation support 30days via email support cartft com M3 ATX User Guide Page5 ...

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