Technics SU-A600

Details on continuous power output for various frequencies and distortion levels.

Specifications for input sensitivity, signal-to-noise ratio, and impedance.

Information on the amplifier's frequency response and tone control capabilities.

Includes power supply, consumption, dimensions, and weight of the unit.

Steps for safely discharging power capacitors and performing initial voltage checks before repair.

Explains the conditions for protection circuit activation and the procedure to reset it.

Details on the AC power supply cords and plug adapters provided.

Critical safety information on AC mains lead wiring, fuse rating, and replacement.

Description of the power switch and operation indicators on the front panel.

Explanation of volume, balance, tape monitor, and input selector controls.

Details on tone controls, tone defeat button, and speaker selection buttons.

Information about the front panel headphone jack.

Guide for connecting turntables, ground wires, and tuners to the unit.

Instructions for connecting CD players and auxiliary audio sources.

How to connect tape decks and graphic equalizers to TAPE 1 and TAPE 2 terminals.

Methods for connecting main, second, and bi-wired speakers, including load impedance.

Instructions for setting the unit's power voltage and information on the cooling fan.

Step-by-step guide for removing the unit's outer cabinet and front panel assembly.

Procedure for removing the volume, operation, and tone amplifier circuit boards.

Steps for removing the power switch/headphones PCB and the rear panel.

Instructions for removing power transformer PCBs and the power supply PCB.

Steps for removing the main PCB, chassis base, and fan motor assembly.

Procedures for inspecting and analyzing the main printed circuit board for faults.

Detailed steps for safely removing and replacing the power IC, including compound grease application.

Diagrams illustrating the main amplifier circuit and the operation control circuit.

Schematics detailing the power supply circuit and voltage adjustment configurations.

Layout diagrams for the main, volume, and operation printed circuit boards.

Layout diagrams for tone, power switch, and power supply printed circuit boards.

Layout diagrams for the power transformer circuit boards.

Diagrams showing wiring for power transformers and the power supply unit.

Wiring diagrams for main circuits, input terminals, and output connections.

Wiring connections for control circuits, including power switch and headphone jacks.

Block diagram illustrating signal paths from input selection to amplifier stages.

Block diagram showing amplifier stages, muting, and control circuitry.

Block diagram detailing power supply, reset signal, and microcomputer control functions.

Detailed pinout and functional descriptions for the M37470M2215S microcomputer IC.

List of integrated circuits and transistors used in the amplifier, with part numbers and remarks.

List of diodes, variable resistors, and thermistors with specifications.

Part numbers and specifications for coils and power transformers.

List of cabinet parts including chassis, panels, knobs, and screws.

Details on packing cases, pads, and protective covers used for shipping.

List of accessories such as AC power supply cords, instruction manuals, and caution labels.

List of fuses, input/output jacks, and various switches with part numbers.

Part numbers for connectors, speaker terminals, earth terminals, and fuse holders.

List of relays, oscillators, and other miscellaneous components.

Exploded view illustrating the location of various cabinet and internal parts.

Diagrams showing the packaging configuration and identification of included parts.