Technics SU-V7

Details continuous power output, total harmonic distortion, and intermodulation distortion.

Covers input sensitivity, impedance, frequency response, and RIAA equalization.

Specifies residual hum and noise levels and damping factor.

Step-by-step guide for SCR removal and notes on specific setscrew types.

Illustrates the locations of key test points for adjustments.

Lists required settings and instruments for measurements and adjustments.

Procedures for adjusting and verifying the supply voltage levels.

Guides for adjusting ICQ and the load impedance detection circuit.

Outlines critical checks for DC balance, protection, and overload detection circuits.

Details the circuit paths for phono input signals and cartridge selection.

Explains the function of input selector and recording mode selector switches.

Shows the circuitry for volume, loudness, high filter, and subsonic filter controls.

Illustrates the differential amplifier, bias, and power amplifier stages.

Depicts the voltage regulator circuits for stable power supply.

Details the protection circuits designed to safeguard the amplifier.

Shows speaker output terminals and the speaker selection mechanism.

Explains ICs for voltage comparison and impedance detection for protection.

Illustrates the relay drive circuits and associated regulator components.

Explains the operational modes and positions for various switches (S1-S13).

Lists diode part numbers for replacement, distinguishing between production and standardized parts.