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Explains the "series II" designation and serial number prefixes for model identification.
Provides technical support contact details and states the manual's proprietary and copyrighted nature.
Details significant improvements, including cooling, voltage tolerance, and circuit redesigns in Series II models.
Outlines the essential leakage test using an AC voltmeter to ensure user safety before returning the unit.
Explains the numbering convention used for parts identification within the service manual.
Comprehensive list of parts for the M1400 series, including main assemblies and subassemblies.
Detailed breakdown of parts for the heatsink subassembly of the M1400 series.
Comprehensive list of parts for the M1400i series, including main assemblies and subassemblies.
Detailed breakdown of parts for the heatsink subassembly of the M1400i series.
Specific parts list for the 055-253-00 Input board used in Mackie amplifiers.
Specific parts list for the 055-254-00 Display board used in Mackie amplifiers.
Specific parts list for the 055-255-xx Amplifier board used in Mackie amplifiers.
Specific parts list for the 055-162-xx Soft Start board used in Mackie amplifiers.
Identifies models, common symptoms of signal fade-out, and the probable cause related to ribbon cables.
Provides the recommended solution, essential safety warnings for technicians, and required tools.
Lists the specific part numbers for ribbon cables and headers necessary for the repair procedure.
Step-by-step instructions for performing the ribbon cable replacement on the input board.
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