Very good documentation for the Grundig 2077 model (as well as similar 800/900/1000 series radios). The first two pages are a summary of reception specifications and output capability. The third page is the tuner dial indicator and dial cord routing diagram. the final ~5 pages are the schematics for the various models (including 2077). The scan quality of the schematics are good, adn can be easily read if zoomed in. The documents are in German, not English as stated. It would have been nice to have the tuning sequence and settings, and some trouble shooting materials... or component and wiring map.
Pin Name
S2 S1 COM4 COM3 COM2 COM1 DBR4 DBR3 DBR2 DBR1 RESET HCTR VDD FMIN AMIN GND PLL OUT LPF OUT VT GND TEST 1 XIN
I/O
O O O O O O I I I O I I LCD segment output. LCD segment output. LCD commn output 4. LCD commn output 3. LCD commn output 2. LCD commn output 1. LCD reference voltage. LCD reference voltage. Voltage doubler boosting. Voltage doubler boosting. System reset input. Pulse out. Supply voltage terminal. FM oscillator signal input. AM oscillator signal input. Ground terminal. Phase comparison output. LPF output. VT input. Ground terminal. Connected to ground. Crystal 75kHz oscillator pin.