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Technics SU-A800 Service Manual

Technics SU-A800
22 pages
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Technics SU-A800 Specifications

General IconGeneral
Input Sensitivity150mV (line)
Channel Separation55dB (1kHz)
Signal to Noise Ratio106dB (IHF-A)
Dimensions430 x 98 x 340 mm
Damping Factor60
Speaker Load Impedance4Ω - 16Ω

Summary

Specifications

Pre-Repair Procedures and Protection

Protection Circuitry Operation

Explains the function and troubleshooting of the protection circuitry.

AC Mains Lead Safety Precautions

Location of Front Panel Controls

Audio Connections Guide

Power Voltage Setting

Speaker Connection Procedures

AC Power Cord Connection

Instructions for safely connecting the AC power supply cord to the unit and outlet.

Main P.C.B. Inspection and Repair

Power IC Replacement Procedure

Detailed steps for replacing the power integrated circuit.

Schematic Diagrams

Main Circuit, EQ, Input Selector, Amplifier Schematics

Detailed schematic of the main signal path and amplifier stages.

Printed Circuit Board Layouts - Part 1

Main P.C.B. Layout

Layout diagram for the main amplifier printed circuit board.

Printed Circuit Board Layouts - Part 2

Printed Circuit Board Layouts - Part 3

Transformer, Power Supply, and Voltage Adjustment P.C.B. Layouts

Layouts for power transformer, power supply, and voltage adjustment PCBs.

Wiring and Block Diagrams

Integrated Circuit Terminal Functions

Replacement Parts List

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