Sony TA-1140 Service Manual

Lists detailed electrical and performance specifications for the TA-1140 amplifier, including power output, frequency response, and input sensitivity.

Explains the function and operation of various stages and controls within the amplifier, referencing circuit diagrams.

Presents a functional block diagram illustrating signal flow and interconnections between major amplifier sections.

Shows signal voltage levels at various points in the amplifier circuit, measured in dB relative to a reference voltage.

Lists the necessary tools for performing disassembly and replacement procedures on the TA-1140 amplifier.

Provides a chart to help identify and decipher hardware codes used in the service manual.

Details the steps for safely removing the top cover and front panel of the unit.

Describes the procedure for removing the front subchassis, which holds controls and switches.

Outlines the steps required to remove the rear panel of the amplifier.

Provides instructions for replacing various controls and switches on the unit.

Guides the user on how to remove printed circuit boards from the amplifier.

Details the process for replacing the power transistors, including crucial heat transfer considerations.

Illustrates the internal component layout and placement within the amplifier chassis.

Provides step-by-step instructions for adjusting the DC bias in the power amplifier section.

Detailed schematic diagram of the preamplifier section, showing component interconnections.

Detailed schematic diagram of the power amplifier and power supply sections.

Illustrates the component layout and wiring on the Volume/Loudness Control Board.

Shows the component placement and conductor paths on the Preamplifier/Power Supply Board.

Depicts the component layout and conductor traces for the Equalizer Amplifier Board.

Provides a detailed view of the Power Amplifier/Power Supply Board's component placement and wiring.

Illustrates the component layout and connections on the Speaker Switch Board.