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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
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Very good detail, all pages clear, exactly what I needed
TAPE DECK ADJUSTMENTS
1. HEAD REPLACEMENT
� After replacement, demagnetize the heads by using a degausser. � Be sure to clean the heads before attempting to make any adjustments. � All wiring should be returned to the original position after work is completed.
2. HEAD AZIMUTH ADJUSTMENT
(1) Load the test tape(VTT-703, etc., 10 kHz) for azimuth adjustment. (2) Press the PLAY button. (3) Use a cross-tip screwdriver to turn the screw for azimuth adjustment so that the left and right output are maximized. (4) Press the STOP button. (5) After completion of the adjustment, use thread lock(TB-1401B) to secure the azimuth-adjustment screw.
3. AC BIAS FREQUENCY ADJUSTMENT
(1) Connect counter to T201(BS). (2) R/P switch in recording state. (3) Adjustment T801 a plastic screw , AC bias frequency : 80 kHz.
4. MOTOR SPEED ADJUSTMENT
(1) Insert the test tape(TCC-119, etc., 3,000 Hz). (2) Press the PLAY button. (3) Use a flat-tip screwdriver to turn the SVR(located inside the rear of the motor) to adjust SVR so that the frequency counter become 3,000 Hz.
5. CHECKING THE MECHANISM TORQUES AND TENSION
� Clean the head, capstan and pinch roller before making any measurement.
Measurement Cassette for measurement PLAY F.FWD REW Take-up torque PLAY : TW-211A F.FW/REW : TW-2231 30 - 60 gr.cm 55 - 120 gr.cm. 55 - 120 gr.cm. Back tension PLAY : TW-2111A 2.0 - 4.5 gr.cm --------Tape tension Drive-power cassete TW-2412 60 gr or more. ---------
This is a basic adjustment.
IC BLOCK DIAGRAM & DESCRIPTION
IC903 LA6541D(CD Driver)
Vcc 24 Vref 23 11k VIN4 22 VG4 21 Vo8 20 Vo7 19 Vcc GND Vo6 18 Vo5 17 VG3 16 11k VIN3 15 CD 14 RES 13
Level Sift
BTL Driver
BTL Driver
Level Sift
RESET
Level Sift
BTL Driver
BTL Driver
Level Sift
Regulator
11k 1 Vcc 2 Mute 3 VIN1 4 VG1 5 Vo1 6 Vo2 GND 7 Vo3 8 Vo4 9
11k 10 11 12
VG2
VIN2 Reg OUT Reg IN
-3-
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