Table Of Contents; Specifications - JVC Super-A R-S77 Service Manual

Contents
-_
. Specifications ............ 00. eee eee
2. Names and Their Functions
2-(1) FrontPanel............00.00eeee
10. Printed Circuit Board Ass'y and Parts List
10-(1) TXX-267 Main Amp., Power Supply and
Other Functions Split P.C.
2-(2) RearPanel..............0-000000s 3 Board Ass'y........-----5 10
3. Removal Procedures 10-(2) TXX-268 Equalizer, S.E.A. and Other
3-(1) Top Cover and Bottom Plates ......... 4 Functions Split P.C. Board
3-(2) Power Transistors ..........0.00005 4 ASS. sacsps0a eb htt d dino ee ae 13
4. Main Parts Location 10-(3) TXX-269 Logic and Counter P.C. Board
4-(1) Top View ...... 2.2.00 cee ee eee eee 5 NSS*Y eased a aby ae ae 15
4-(2) Front View ...........00 cee eeee 5 10-(4) TAP-283 S.E.A. Control P.C. Board
4-(3) Rear View...... 2... cece ee es 5 ASS Ye ea Ode GbE ete 8 17
5. Exploded View and Part Numbers ........... 6 10-(5) TFM-924 FM/AM Tuner P.C. Board
6. Block Diagram of Digital Synthesizer ......... 7 ASS'Y ce ee ee 18
7. Pin-plug to Pin-jack Connections Diagram ...... 7 11. Accessories List .......-...-.-2 02.0 ee eae 21
8. FM/AM Tuner Alignment Procedures
12. Packing Materials and Part Numbers..........
21
8-(1) FM Section ..............20e 000s 8 13. R-S77 Schematic Diagram .........--0 0000s 22
8-(2) AM Section............0000ce eae 9 14. Parts List with Specified Numbers for
9. Power Amplifier Idling Current Adjustment
Designated Areas .......
0. 0c eee eee eee 24
Procedure ..... 00.0 e eect eect ee ne eene 9
Warning:
When replacing the parts marked with A\ , be sure to use the designated parts to ensure safety.
1. Specifications
FM Tuner Section (Figures are based upon IHF Standard)
Tuning Range : *87.9 MHz - 107.9 MHz
(87.5-108.0 MHz for 50 KHz step)
: 10.3 dBf (1.8 wV/300 Q)
Amplifier Section
RMS Power
(Both channels driven,
from 20 Hz to 20 kHz
with 0.005 %
: 60 W per channel at 8 Q2
Usable Sensitivity (IHF)
50 dB Quieting Sensitivity
Mono : 14.8 dBf (3 wV/300 Q) RMS Power : 65 W per channel at 8 Q
Stereo : 37.2 dBf (40 uV/300 22) (Both channels driven,
Distortion at 1 KHz)
Mono : 0.15 % (1 kHz) Total Harmonic Distortion : 0.005 % at rated power
Stereo : 0.3 % (1 kHz) 20 Hz - 20 kHz, 8 Q
Signal to Noise Ratio 0.001 % at rated power 1 kHz,
Mono : 80 dB (68 dB, DIN) 8
Stereo : 70 dB (62 dB, DIN) Input Sensitivity/Impedanc
Selectivity : 80 dB, +400 kHz Phono : 2.5 mV/47 kQ
(65 dB, 300 kHz, DIN) Aux : 180 mV/43 kQ
: 1.0 dB
: 100 dB at 98 MHz
: 78 dB at 98 MHz
: 45 dB at 1 kHz
Capture Ratio
IF Rejection
Image Rejection
Stereo Separation
: 180 mV/43 kQ
(180 mV/43 kQ, DIN)
Tape Play
S.E.A. Graphic Equalizer
Center Frequencies : 40 Hz, 250 Hz, 1 kHz, 5 kHz
AM Tuner Section and 15 kHz
Tuning Range : *530 kHz - 1620 kHz Control Range - £12 dB
(522 kHz-1611 kHz for 9 kHz step) Signal to Noise Ratio : Phono 77 dB
: 250 pV/m, 50 uwV
(External Antenna)
: 50 dB
: 0.5 % at 10 mV/m
: 63 dB +10 kKHz(60 dB +9 kHz, DIN)
(Note) *U.S.A. & CANADA
(New IHF 75 cB)
Tape Play 98 dB
(New IHF 75 dB)
: See page 24
Usable Sensitivity (IHF short-circuited
A network)
Signal to Noise Ratio
Distortion
Selectivity
Power Consumption
Design and specifications subject to change without notice.
Dimensions and Weight
Dimensions
Areas Height _| Width
12.0 cm (4-23/32") | 48.0 cm (18-29/32") | 38.2 cm (15-1/16")
11.9 em (4-11/16") |45.2 om (17-13/16") | 38.2 om (15-1/16")
Weight
Depth Net
10.8 kg (23.8 Ibs.)
10.6 kg (23.3 Ibs.)
U.S.A., Canada & U.S. Military Market
All Other Countries
R-S77
No. 2520
4