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There are currently no product reviews.
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The manual was very accurate for the part that I was changing, I was able to order the correct part and had no issues with the replacement procedure. However, I was expecting to have more detailed repairs for the lower drive unit.
 ;
I needed the manual immediately and I got it immediately. I couldn't find this manual anywhere else on the net. The site was easy to traverse, and the price was very reasonable. I'll definitely be back for any future needs.
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I received a good service manual, with good resolution. Improve the instructions for the purchase because they are not well understood.
For the rest, so good.
Thanks Angel.
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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
6. ADJUSTMENT PROCEDURE
ALIGNMENT INSTRUCTIONS
(1) EQUIPMENT NEEDED AM Standard Signal Generator FM Standard Signal Generator Oscilloscope VTVM (AC,DC) AM Test Loop Antenna (AM Adjustment) FM Dummy Antenna (FM Adjustment) Stereo Signal Generator (RDS IN : EUROPE ONLY) Frequency Counter Distortion Analyser
AM-SG
IMPORTANT 1.Check power-source voltage. 2.Set the function switch to band aligned. 3.Keep the signal input as low as possible to adjust accurately. 4.Modulation and modulation frequency.
(2) FM, AM TRACKING VOLTAGE ADJUSTMENTS
AM,FM DC Voltmeter : Connect to test point TP1 and GND NO Band 1 2 FM AM AM Frequency 87.50 MHz 522 kHz 520 kHz Adjust for 1.6V 1.0V 1.0V Adjustment L7 L13 L13
DC EVM
(4) FM RF ADJUSTMENTS
Signal generator : Connect to FM Ant. (FM 75 ohm) through the dummy. Adjust for indication of VTVM of the wave form of scope to be maximum. Band NO FM 1 3 Frequency 100.10 MHz Adjust for
Max sensitivity
Adjustment L2,L5,L6,T1
Repeat steps 1 several times.
AC EVM OSCILLOSCOPE
Band AM
Item
Modulation 30 %
Modulation freq. 400 Hz 1 kHz
UNIT FM AM GND GND
kHz
FM (EUR, OVC) MONO : 40 kHz DEV. SR5000/N1B STERO : L=R (40 kHz), PILOT (7.5 kHz) 47.5 kHz DEV. SR5000/K1B RDS : STEREO + RDS (1.2 kHz) 48.7 kHz DEV. FM (USA) SR5000/U1B MONO : 75 kHz DEV. (100 %) DTEREO : L=R (67.5 kHz), PILOT (7.5 kHz)
TP1
AM LOOP antenna
60cm OUTPUT terminal
1 kHz
(3) AM RF ADJUSTMENTS
Signal generator : Connect to the AM Ant. Coil through the loop antenna. Adjust for the indication of VTVM of the wave form of scope to be maximum. /N1B, /K1B Band NO 1 AM 2 3
(5) FM MONO DISTORTION ADJUSTMENTS
Signal Generator : Connect to FM Ant. (FM 75 ohm) through the dummy. DC Voltmeter : Connect to TP2(+),TP3(-) through the choke coil (100uH). Distortion Meter : Connect to output L or R.
TUNER ADJUSTMENT POINT
Frequency 612 kHz
Adjust for
Max sensitivity
Adjustment L12,T13 Band NO FM 1 2 3 Frequency Adjust for Adjustment T11 T12
1503 kHz Max sensitivity CT1 Repeat steps 1 and 2 several times.
100.10 MHz DC Voltmeter 0V 100.10 MHz Minimum T.H.D
Repeat steps 1 and 2 several times.
AC EVM OSCILLOSCOPE
/U1B Band NO 1 AM 2 3 Frequency 610kHz 1510 kHz Adjust for
Max sensitivity Max sensitivity
Adjustment L12,T13 CT1
FM-SG
MHz OUT
Repeat steps 1 and 2 several times.
UNIT
DC EVM
FM Dummy
FM-SG
MHz OUT
FM 75ome in
UNIT
TP12 TP13 output Choke coil 100 H
OUTPUT
FM Dummy DISTORTION ANALYSER
FM 75ome in
37
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