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Technics SU-V505

Technics SU-V505
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Technics SU-V505 Specifications

General IconGeneral
BrandTechnics
ModelSU-V505
CategoryAmplifier
LanguageEnglish

Summary

Specifications

Power Bandwidth Specifications

Details output power across frequency ranges.

Residual Hum and Noise Levels

Specifies noise levels for various inputs.

Input Sensitivity and Impedance Requirements

Lists input requirements for different sources.

Phono Max Input Voltage

Maximum input voltage for phono sources.

Signal-to-Noise Ratio (SN)

Signal-to-noise ratios for different inputs.

-26 dB Power Output

Power output at a reduced level (-26 dB).

Frequency Response Range

Audio frequency range coverage.

Total Harmonic Distortion (THD)

Distortion levels at rated power.

Intermodulation Distortion (IMD)

Distortion from mixed frequencies.

Damping Factor Specification

Controls speaker damping.

Tone Control Range

Bass and Treble adjustment ranges.

Subsonic Filter Function

Filters out low-frequency rumble.

Loudness Control Operation

Boosts bass/treble at low volumes.

Output Voltage and Impedance Specs

Output levels for recording and headphones.

General Unit Specifications

Power consumption, weight, dimensions.

Safety Precautions

Insulation Resistance Test Procedure

Procedure to ensure electrical safety.

Location of Controls

Protection Circuitry Explanation

Explains the protection circuit's function.

Before Repair and Adjustment

Disassembly Procedure Overview

Steps for taking the unit apart.

Cabinet Removal Steps

How to remove the outer cabinet.

Bottom Board Removal Steps

How to remove the bottom panel.

Front Panel Removal Steps

How to remove the front panel assembly.

Power Transistor and Component Handling

Power Transistor Removal Steps

Steps for removing power transistors.

Power Transistor Fitting Precautions

Important considerations for installing power transistors.

Measurements and Adjustments

Clock Adjustment Procedure

Adjusting the microcomputer clock timing.

Idling (ICQ) Adjustment Procedure

Adjusting bias current for optimal performance.

Protection Circuit Checks

Muting Check Procedure

Verifying muting operation on power.

Overload Detection Check Procedure

Testing the overload protection circuit.

Load Impedance Detection Circuit Adjustment

Adjusting the speaker impedance detection.

Technical Information

Computer Drive System Overview

Explanation of the "computer drive" circuitry.

Power Transistor Idling Current (Ica) Details

Details on idling current adjustment.

Idling Current and Bias Current Factors

Factors influencing idling and bias current.

Speaker Impedance Detection Circuit

Reset and Detection Signal Circuit Description

How the detection circuit is reset and generates signals.

Voltage Comparing Circuit Function

Circuit that compares voltages for impedance detection.

ICQ Controller Operation

Computer Drive Monitor Indicator Functions

Indicators showing ICQ status.

Output Indicator Functions

Indicators for output status.

Indicator Timing and Microcomputer Outputs

Timing of indicators and microcomputer outputs.

Circuit Boards and Wiring

Circuit Boards and Wiring Diagram

Visual guide to component placement and connections.

Schematic Diagram

ICQ Controller Terminal Functions

Resistors & Capacitors

Replacement Parts List

Exploded Views

Circuits to be Changed and Areas

Power Source Circuit Variations by Area

Details power supply circuit differences by region.

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