COMPOSANTS - Service Manuals
2 manuals available for download
COMPOSANTS provides comprehensive technical documentation and service manuals for professional electronics repair and maintenance. Our PDF download library includes detailed repair guides, workshop manuals, and troubleshooting resources designed for technicians and engineers working with electronic components and assemblies. Whether you need a complete service manual, owner's manual, or parts list to support your repair operations, COMPOSANTS delivers the technical documentation required for efficient maintenance and diagnostics.
TBA931 Dual NF Amplifier IC - Technical Data and Schematic
Technical data sheet and service documentation for the TBA931 monolithic dual NF amplifier IC manufactured by Intermetall. This detailed reference covers electrical characteristics, complete circuit schematic, die layout information, and NF amplifier design fundamentals with practical guidance for RIAA preamp circuits. Includes frequency response plots, component specifications, and performance data across three noise figure grades: F<6dB, F<3dB, and F<1.5dB. Operating parameters specify 24V supply voltage, 50kΩ input impedance, and 200Ω output impedance. Essential reference for audio equipment repair, vintage audio restoration, and integrated circuit troubleshooting where this dual amplifier stage is used in preamp or low-noise signal conditioning stages.
TBA931 Replacement PCB 1.081.998.00 Assembly Guide
Assembly and replacement guide for TBA931 PCB boards (1.081.998.00 and 1.080.770.81). Covers complete circuit diagrams, copper and component layer layouts, pinout specifications, and dimensional drawings. Includes detailed component lists, assembly notes, and wiring schematics for the VU-meter PCB 1.080.807, plus integrated Studer audio equipment circuit references and parts documentation. Technicians will find all necessary schematics, PCB layouts, and component specifications for repair, replacement, and reassembly of these audio circuit boards.