KD- |
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A77A/8/C/E/J/U |
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Contents |
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Specifications |
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2 |
Features |
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3 |
Controls and Connections |
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3 |
Main Parts Location |
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4 |
Maintenance |
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4 |
New Technique |
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5 |
Removal of |
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the Main Parts |
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Main Adjustments ................................................... |
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Block Diagram |
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16 |
Integrant Circuit |
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18 |
Standard Schematic |
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Diagram of |
KD-A 77 |
Amplifier circuit ................................................ |
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Mecha. |
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control circuit .......................................... |
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Wiring |
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Connection (1 ) of KD-A 7 7 |
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Wiring |
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Connection (2) of KD-A77 .............................. |
22 |
Enclosure Ass'yand |
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Electrical Parts |
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25 |
Enclosure Ass'yand |
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Electrical Parts List |
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23 |
Mechanical Components Parts |
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26 |
Mechanical |
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Components Parts List ........................ |
28 |
Printed Wiring Board Parts |
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Main Amp. |
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P.W. Board Parts |
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33 |
Power Supply P.W. Board Parts |
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34 |
Main Amp. P. W.B Parts List ................................. |
30 |
Power Supply |
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P.W.B Parts List |
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35 |
Other P.W.B Parts ................................................... |
37 |
Other P. |
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W.B Parts List ....................................... |
39 |
Packing |
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Back cover |
Accessories |
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Back cover |
Specifications |
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Type |
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Stereo |
cassette deck |
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Track system |
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4-track, 2-channel |
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Tape |
speed |
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1-7/8 |
inch/sec |
(4.8 cm/sec) |
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Frequency response |
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OVU |
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Metal |
tape |
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25-12500Hz |
±3dB(Typical) |
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SA/Cr02 tape |
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25 - |
8000Hz ± 3dB(Typical) |
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-20VU |
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Metal |
tape |
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* 1 |
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15-20000Hz |
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SA/Cr02 |
tape |
*2 |
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25 -1 |
8000Hz |
± 3dB(Typical) |
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15-20000Hz |
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SF/Normal |
tape * 3 |
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25- 1 |
8000Hz |
± 3dB(Typical) |
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15-19000Hz |
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25-17000Hz |
±3dB(Typical) |
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SIN ratio |
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Surpases DIN 45 500 |
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60dB (from peak level, weighted, |
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Metal tape) |
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The SIN is |
improved by 5dB at |
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1kHz and by |
10dB above 5kHz |
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with |
ANRS on. |
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Effect of |
Super ANRS |
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(DIN |
45 |
500 weighted) |
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(normal tape) |
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Improvement of SIN |
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the same as |
with ANRS |
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Improvement of |
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frequency response |
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OVU recording; 6dB at 10kHz |
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5VU recording; 12dB at 10kHz |
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Improvement of distortion |
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Wow and flutter
Crosstalk Hormonic distortion
Bias
Erasure
Heads
OVU recording; |
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+ |
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3 % or |
less |
at 10kHz |
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5VU recoridng; |
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0.04% |
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3 % or less at 10kHz |
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(WRMS), |
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0.14% |
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(DIN 45 |
500) |
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65dB (1 |
kHz) |
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K3; |
0.4%, THD: |
1.0% |
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(metal tape, 1kHz OVU) |
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AC bias |
(85kHz) |
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AC |
erasure (85kHz) |
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3 heads |
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SEN ALLOY head for recording, |
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SEN |
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for |
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ALLOY X cut type |
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playback and |
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ALLOY |
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two-gap SEN |
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head for erasure |
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No.4186
Motors
Fast forward time Rewind time Semiconductors
Input terminals
Output terminals
Power requirement
Power consumption Dimensions
Weight
FG type DC servo motor (for |
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Capstan) |
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DC |
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motor (for Reel) |
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85 sec. |
with |
C-60 cassette |
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85 sec. |
with |
C-60 cassette |
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18 ICs, |
49 transistors, 59 |
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diodes, |
14 |
LEDs |
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Mic jack x |
2, |
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Max. sensitivity; |
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0.2mV (-72dBs) Matching impedance;
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6000-10kO |
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Input jack x |
2, |
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Min. input level; |
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Input |
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80mV (-20dBs) |
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impedance; |
100kO |
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Output jack x 2, |
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Output |
level; 0-300mV |
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Output |
impedance; 6kO |
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Matching impedance: |
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50kO or more |
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Phones jack x 1, |
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Output |
level; 0-0.5mW/SO |
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Matching |
impedance: 80-1 kO |
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AC 120V, |
60Hz (KD-AnCW |
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AC |
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50/60Z |
240/220/120V, |
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AC |
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(KD-A n A/B/E) |
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240/220/120/1 OOV, |
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50/60Hz |
(KD-A77U) |
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36W |
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17-3/4" |
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(450 mm) W |
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4-3/4" |
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(120 mm) H |
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12-7/16" |
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(316mm)D |
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18.3 Ibs |
(8.3 |
kg) |
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Note: |
* 1 ... SCOTCH |
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* 2 |
METAFINE or Equivalent |
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... TDK |
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* 3 |
SA or Equivalent |
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... MAXELL UD or Equivalent |
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Design and specifications |
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notice. |
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are subject to change without |
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2 |
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