Grundig TK 140 de luxe Circuit Diagram and Service Notes
Complete service manual and circuit diagram for the Grundig TK 140 de luxe tape recorder. This three-page schematic set covers the radio tuner section, transistor amplifier stages (BC107B, BC108B/C, BC148B, AD161, AD162), power supply circuits, speaker selector switching, and motor control circuits. The service notes page walks through essential adjustment procedures including final stage current biasing, HF coupling tuning, HF pre-magnetization setup, and output level calibration. A practical troubleshooting and maintenance reference for anyone servicing this classic machine.
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Document Details
- Format
- Pages
- 3
- Size
- 265.9 KB
- Category
- Audio & HiFi