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6-24V Intelligent Automotive ATX Power Supply
Before you start...
Please take a moment and read this manual before you install the M1-ATX in your
vehicle. Often times, rushing into installing the unit can result in serious damage
to your M1-ATX board, computer and probably your car's electrical system.
The M1-ATX board has several wires that need to be installed in various places.
When installing, always double check the polarity of your wires with a voltmeter.
NEVER use the cigarette plug as a power source, often times the contacts are not
capable of delivering high current to your PC.
1.0 Introduction
Thank you for purchasing the M1-ATX power sequencer / vehicle ATX power supply.
The M1-ATX was designed to work with a wide variety of main boards such as the VIA
mini-ITX motherboards as well as low power Pentium-M or Celeron I, II and III systems.
Please note that powering full power P4 or AMD systems is not recommended due to
12V rail power limitations.
1.1 M1-ATX Logic Diagram
+
Battery
GND
Ignition
Amplifier
Enable
M1-ATX
Installation Guide
P/N M1-ATX-01
Reverse and
+
forward protection
-
SW
J2
Version 1.0c
Switch Logic
6-2430V ATX
PSU
8bit MCU
M1-ATX
PC
ATX
power
MotherBoard
ON/OFF switch
J6
J8
Optional On/OFF switch
J4
LED
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Table of Contents
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Summary of Contents for mini-box M1-ATX
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Page 1: Installation Guide
Thank you for purchasing the M1-ATX power sequencer / vehicle ATX power supply. The M1-ATX was designed to work with a wide variety of main boards such as the VIA mini-ITX motherboards as well as low power Pentium-M or Celeron I, II and III systems. - Page 2 Optional HDD power (not shown in this picture) ATX power connector (to motherboard) To LED (optional) NOTE: “when HARDOFF is set to “never”, the M1-ATX will automatically shut down when battery voltage is below 11V for more than 1 minute in order to prevent ‘deep discharge’ situations.
- Page 3 Ignition=OFF. Nothing happens. M1-ATX is waiting for ignition signals. Ignition=ON. M1-ATX waits for 3 seconds then turns on the 5Vsb rail. After another 1 second the MCU sends an “ON” signal to the motherboard via the 2 wires connected to the motherboard’s ON/OFF pins.
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Page 4: Troubleshooting
SLEEP mode. During the HARDOFF procedure, the battery levels will be constantly monitored to prevent deep discharge situations. When battery levels reach > 11V, the PSU will start working again. M1-ATX will go to step 1, if ignition is tuned ON again. 3.0 Troubleshooting a) Motherboard is not turning ON. - Page 5 Cool Embedded PCs NOTE (5V and 12V rail combined should not exceed 50Watts) Total Max power=92Watts When operating at 24V or extreme temperatures, de-rate to 80Watts, ventilation will be required. 4.0 Support and warranty Standard Hardware Warranty 1Year / US, 2 Year EU Installation support: 30days via email, support@mini-box.com...
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