White Lightning M Series Operator's Manual
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White Lightning M Series Operator's Manual

Dual voltage 14/28-volt mini-gpu
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M-Series Operator's Manual
Model M1428-DV, Dual Voltage 14/28-Volt Mini-GPU
IMPORTANT DISCLAIMERS & LIABILITY LIMITATIONS
As a condition for use, Audio Authority Corp. authorizes this device for use ONLY by aviation
professionals, such as licensed pilots and maintenance technicians, knowledgeable about the
aircraft's electrical system and batteries. The concepts, recommendations, and instructions in this
manual are necessarily general and make assumptions that may not apply to your aircraft. Therefore,
incorrect use of this device has the potential to damage the GPU and/or aircraft components.
The device is designed exclusively for aircraft with either a 14 or 28-VDC electrical system and a
factory-installed external power receptacle for a 3-pin oval AN2551 (NATO) plug. If your 14-volt
aircraft is experimental and does not have an external power receptacle, a wiring kit and matching
output cable are available at additional cost. Call our factory for assistance.
It is the operator's sole responsibility to read completely and fully understand this manual, plus all
available documentation on their aircraft's electrical system design, to properly determine the
appropriate use of this, or any, external power source. If you cannot do this, do not use this
product. Instead, consult a qualified technician familiar with your specific aircraft type and
configuration before connecting the GPU to your aircraft, or return it to the seller before using.

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Summary of Contents for White Lightning M Series

  • Page 1 M-Series Operator’s Manual Model M1428-DV, Dual Voltage 14/28-Volt Mini-GPU IMPORTANT DISCLAIMERS & LIABILITY LIMITATIONS As a condition for use, Audio Authority Corp. authorizes this device for use ONLY by aviation professionals, such as licensed pilots and maintenance technicians, knowledgeable about the aircraft’s electrical system and batteries.

  • Page 2: General Description And Application

    General Description and Application The M1428-DV Mini-GPU is a specialized switching-mode power supply designed to provide pilots and aviation maintenance professionals with a portable, affordable source of stable, high-current, noise-free DC power that replicates the in-flight electrical environment. It contains discrete outputs for either 14 or 28-volts DC, selectable by a front panel switch.

  • Page 3: Safety Precautions

    Safety Precautions ● Do not use this or any electrical device near uncontained fuel or fuel vapors. ● Use in a well-ventilated area. ● Do not use in a wet environment. ● Do not use in the presence of open fuel containers or if fuel vapors are detected. ●...

  • Page 4: Troubleshooting

    Troubleshooting PROBLEM / CONDITION CAUSE SOLUTION Verify power cord connections. Check AC input fuse. If blown, replace (only once). 1 extra fuse is contained in GPU does not turn ON the fuse drawer. If fuse blows a second Volt/Amp meter OFF* No AC input to GPU.

  • Page 5: One Year Limited Warranty

    One Year Limited Warranty All Mini-GPUs are warranted to the original purchaser to be free of defects in materials and workmanship for a period of one year from date of shipment. If you suspect a failure, please contact our service department for instructions or see our Service Policies online at www.audioauthority.com/page/Service_policy.

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