JVC MX-KA3 Service Manual

MX-KA3
1-30
0/30dB
2dB STEP
MUXO-L IN(L)
VOLUME
VOLUME
TREBLE
TREBLE
TRE(L)
MUXO-R IN(R)
TRE(R)
BOUT(L)
SPKR ATT
LEFT
LOUT
SCL
SDA
DGND
ROUT
I
2
CBUS DECODER + LATCHES
100K
100K
100K
100K
G
LIN1
LIN2
LIN3
LIN4
100K
100K
100K
100K
RIN1
RIN2
RIN3
RIN4
G
INPUT MULTIPLEXER
+ GAIN
BASS
BIN(L)
BASS
SPKR ATT
RIGHT
BOUT(R)
BIN(R)
SUPPLY
CREF
AGND
VS
27
4
5
6
7
3
2
1
28
21
22
20
26
24
25
10 11 19 12 13 23
8 9 18 14
15
R
B
R
B
V
REF
2. Block diagram
LIN3
LIN4
MUXO-L
IN(L)
MUXO-R
BIN(R)
IN(R)
BOUT(R)
BIN(L)
1
3
2
4
5
6
7
8
9
BOUT(L)
N.C.
N.C.
TRE(R)
TRE(L)
SCL
SDA
DGND
CREF23
22
21
20
19
17
18
16
15
10
11
12
13
14
28
27
26
25
24
RIN3
RIN2
RIN1
LIN1
LIN2 VS
AGND
ROUT
LOUT
RIN4
1. Terminal layout
 TDA7440D (IC101) : Audio processor

JVC MX-KA3 Specifications

General

Output Power	80 W per channel
Input Sensitivity/Impedance	300 mV/50 kΩ
Frequency Response	63 Hz - 12, 500 Hz
Wow And Flutter	0.15% (WRMS)
CD Capacity	3 CDs
Dynamic Range	85 dB
Signal-To-Noise Ratio	85 dB
FM Tuner Tuning Range	87.5 MHz - 108.0 MHz
AM Tuner Tuning Range	530 kHz - 1, 710 kHz
Dimensions	267 mm x 305 mm x 433 mm
Mass	7.5 kg
Type	3-way bass-reflex type
Woofer	13.5 cm cone
Mid	5 cm cone
Tweeter	2 cm dome
Power Handling Capacity	80 W
Impedance	6 Ω
Frequency Range	45 Hz - 22, 000 Hz
Sound pressure level	89 dB/W.m
Dimensions	228 mm x 316 mm x 258 mm
Mass	3.1 kg
Power Requirements	AC 120 V, 60 Hz
Power Consumption	125 W (power on mode)
Power Consumption in Standby Mode	17 W