Jvc A S7 Service Manual

Page 1

333.7

STEREO INTEGRATED AMPLIFIER

No. 2472
Apr. 1979

Page 2

Contents

1. Specifications . . . . . ................................................... 1
2. Removal Procedures

2-(1) Top Cover ....... . . . . . . . ..................................... 2

2-(2) Printed Circuit Board Ass'y ....................................... 2
3. Main Parts Location .................................................... 3
4. Exploded Views and Part Numbers

4-(1) Front Panel .................................................. 3

4-(2) Rear Panel ................................................... 4

443) Chassis Base .................................................. 5

4-(4) Parts List with Specified Numbers for Designated Areas ..................... 5
5. Printed Circuit Board Assy and Parts List

5-(1) TXX-168 Split-RC. Board Assy .................................... 6

5-(2) TPS-214, 234 ................................................. 12

5(3) TBS-3A .................................................... 12
6. A-S7 Schematic Diagram ................................................. 10
7. Packing Materials and Part Numbers ..................................... Back page
8. Accessories List .................................................. Back page

Warning! When replacing the parts marked with A , be sure to use the designated parts to ensure safety.

1. Specifications

Power Amplifier Section

Output Power lboth channels driven):

Total Harmonic Distortion lat 50W):
(both channels driven)
Intermodulation distortion:

Load impedance:

Damping Factor:

PreArnplifier Section

50 watts per channel, Output Level:

min. RMS into 8 ohms Phono Equalizer Deviation:
from 20Hz -20kHz

with no more than 0.05% Phono Overload:

total harmonic distortion

53 watts per channel into Signal to Noise Ratio:

8 ohms at 1kHz.

THD = 0.05% Frequency Response:
0.02% at 1 kHz

0.05% at rated output Loudness Control:

an - 169 (SYSTEM-1 lat -30d8 Volume Control)
or SYSTEM-2) Tone Controls:

89 - 1652 (SYSTEM-1

and SYSTEM-2) Dimensions:

More than 50 at 89
(20Hz - 20kHz)

TAPE REC-1, ~2 150mV
10.5dB from RIAA curve
(20Hz - 20kHz)

200mv lRMS) at lkHz,
560mV lP-P)

PHONO 70dB lRMS)
AUX 80d8 (HMS)

AUX, TUNER, TAPE
PLAY 20Hz - 40kHz
+0.5, -1dB

+6dB at 100Hz
+3dB at 10kHz
Bass iSdB at 100Hz
Treble i8d8 at 10kHz
5-7/8"(H) x 16-1/2"lW)
x10~7/16"(D)
l14.9cmx42cmx26.4cm)

Weight: 15.84 lbs. (7.2kg)
Input Sensitivity/Impedance: PHONO 2.5mV/47k9
AUX, TUNER, TAPE
PLAY 150mV/40kfl
U.S.A. U.K., Europe
Canada Australia
Other countries
Power Source AC 120V, 60Hz AC110/120/220/240V~
50/60Hz
Power Consumption 220 watts 290VA 480 watts

A-S7
No. 2472

Design and specifications subject to change without notice.