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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.
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Perfect like it was descriped, Perfect like it was descriped
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Very good detail, all pages clear, exactly what I needed
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Excellent service, and just what I needed to service my TU-7700. All pages of the manual are clear and easily readable.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
2. The bell does not ring & page does not ring.
Can the base and handset be connected? OK NG See 3. The base and handset cannot be connected.
Press handset DIAL key while in TALK MODE. Can key touch sound be heard from the ringer? OK
NG
When the key of the handset is NG pressed, in TALK MODE can the pulse output at pin 2 of IC606 be seen? OK
Check IC606,and its peripheral circuit.
At the Q609 collector, can the NG pulse wave be seen? OK
Check Q607, Q609 and their peripheral circuit.
Check RINGER SP601.
When the PAGE SW S1 of the base is pressed, does pin42 of IC6 change from high to low? OK
NG Check R52, R58 and S1.
Check IC6 and its peripheral circuit.
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