JVC UX-M3R Service Manual

UX-M3R
1-23
AN7312 (IC202) : Dual recording/Playback pre-amplifier circuit with ALC
1. Terminal layout
3. Pin function
2. Block diagram
17
Pin No.
Symbol
I/O
Function
~
14 8
~
GND
ALC time constant
ALC input Ch.1
Output Ch.1
Phase compensation Ch.1
N.E.B. Ch.1
Input Ch.1
Input Ch.2
N.E.B. Ch.2
Phase compensation Ch.2
Output Ch.2
ALC input Ch.2
Ripple filter
Vcc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
-
-
I
O
-
I
I
I
I
-
O
I
-
-
GND
ALC time constant by resistance and capacitor
Right channel ALC input
Right channel output
No connect
Right channel negative feed back input
Right channel signal input
Left channel signal input
Left channel negative feed back input
No connect
Left channel output
Left channel ALC input
Ripple filter
Power supply
14 13 12 11 10 9
1 2 3 4 5 6
Ripple Filter
Amp.
Ch2
8
ALC
7
GND
Vcc
Amp.
Ch1

JVC UX-M3R Specifications

Amplifier Specifications

output power	24 W (12 W + 12 W) at 8 Ω (MAX.)
output power at THD	20 W (10 W + 10 W) at 8 Ω (10% THD)
audio output level	800 mV/32 Ω
speakers impedance	8 Ω - 16 Ω

Tuner Specifications

FM tuning range	87.50 MHz - 108.00 MHz
MW tuning range	522 kHz - 1 629 kHz

CD Player Specifications

dynamic range	60 dB
signal-to-noise ratio	60 dB
wow and flutter	Unmeasurable

Cassette Deck Specifications

frequency response for normal tape	100 Hz - 10 000 Hz
wow and flutter	0.35% (WRMS)

General Specifications

power requirement	AC 240 V, 50 Hz
power consumption (operation mode)	30 W
power consumption (standby mode)	1.5 W
dimensions	160 mm × 269.5 mm × 300 mm
mass	4.3 kg

Speaker Specifications

speaker unit (woofer)	10.2 cm cone × 1
speaker unit (tweeter)	5.1 cm cone × 1
impedance	8 Ω
dimensions	160 mm × 269.5 mm × 192 mm
mass	2 kg/each