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Sony Walkman WM-EX120 User Manual

Sony Walkman WM-EX120
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Sony Walkman WM-EX120 Specifications

General IconGeneral
BrandSony
ModelWalkman WM-EX120
CategoryAmplifier
LanguageEnglish

Summary

SPECIFICATIONS

AMPLIFIER SECTION

Covers inputs, outputs, distortion, frequency response, and filters of the amplifier.

SECTION 1 OUTLINE

BLOCK DIAGRAM

Presents a functional overview of the unit's signal path and component connections.

Phono 1 and Phono 2 Input Circuits

Details the input stages for phono cartridges, including impedance and head amplifier use.

Head Amplifier

Describes the amplification stage for low-level MC cartridges, including parallel connection techniques.

Equalizer Amplifier

Details the RIAA equalization stage design and operation, including FET and compensation circuits.

Buffer Amplifier

Describes the stage providing stable output signals and driving controls like balance and attenuator.

Output Amplifier

Details the final amplification stage delivering audio output signals up to 15Vrms.

Power Supply

Explains the generation and distribution of internal voltages for the unit's operation.

SECTION 2 DISASSEMBLY

SECTION 3 ADJUSTMENTS

OFFSET ADJUSTMENT-1 (PHONO EQ AMP)

Procedure for adjusting the DC offset of the phono equalization amplifier to 0V.

OFFSET ADJUSTMENT-2 (OUTPUT AMP)

Procedure for adjusting the DC offset of the output amplifier stage to 0V.

SECTION 4 DIAGRAMS

SCHEMATIC DIAGRAM

Provides detailed electronic circuit schematics for the TA-E88/E88B preamplifier.

SECTION 6 ELECTRICAL PARTS LIST

SEMICONDUCTORS

Lists all semiconductor components with part numbers, descriptions, and transistor types.

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