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Lists specific parts for A-550R and A-550R-S models.
Lists specific parts for the A-450R model.
Details the packing components and procedures for the unit.
Illustrates the external view and identifies front panel components.
Provides the overall circuit schematic for the amplifier.
Shows diagrams for various PCB assemblies like Power SW, LED, etc.
Details the circuit and parts for the AF Complex Assembly.
Details the circuit and parts for the Tone Assembly.
Details the circuit and parts for the Headphone Assembly.
Explains symbols used in PCB connection diagrams and their corresponding part names.
Lists components for the Power Switch assembly.
Lists components for the Control assembly.
Lists components for the LED assembly.
Details various capacitors and resistors used on PCBs.
Lists parts for Eye Assembly and Shield Assembly.
Lists components for the Head Phone assembly.
Lists components for the AF Complex Assembly for A-550R/S.
Lists various transistors used on PCBs.
Lists various capacitors used on PCBs.
Lists various capacitors and resistors used on PCBs.
Lists fusible resistors and other miscellaneous parts for PCBs.
Lists connectors and AF Complex Assembly parts for A-450R.
Lists transistors, diodes, switches, coils, and capacitors.
Lists various resistors used on PCBs.
Lists other parts like pin jacks and speaker terminals for PCBs.
Lists semiconductors for the Tone Assembly.
Lists LEDs, switches, capacitors, and resistors for PCBs.
Lists the capacitor for the Fuse Assembly.
Lists semiconductors and switches for the Tone Assembly.
Details the steps for adjusting the idle current.
Explains the main power switch, standby button, and REC selector.
Describes the input selector and dual volume control functions.
Details phono selector, headphone jack, speaker selectors, and remote sensor.
Explains bass/treble controls, subsonic filter, loudness, direct, and muting functions.
Provides technical specifications for the amplifier section.
Details power requirements, consumption, dimensions, and weight.
Lists included accessories and important notes on specifications.
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