JVC KD-G401 Service Manual

1-26 (No.MA051)
5.5 Signal processing section
No sound from either
channel.
Is 9V present at IC161
pin 31?
Compare the L-ch and
R-ch to locate the
defective point.
Is the sound output from
both channels (L, R)?
NO
YES
Is the audio signal
(including sampling
output components)
output to IC581 pins 1
and 7 during playback?
Is the audio signal
output at IC161 pins 3
and 30 during playback?
Normal
NO
YES
NO
Is 9V present at IC901
pin 10?
YES
Check the connection
between IC901 pin10
and IC301 pin31.
Check IC901 and its
peripheral circuits.
NO
YES
NO
Check IC581 and its
peripheral circuits.
YES
NO
Check IC161 and its
peripheral circuits.
Check the power amp.
IC301.
YES
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

JVC KD-G401 Specifications

Audio Amplifier

maximum power output (front)	50 W per channel
maximum power output (rear)	50 W per channel
continuous power output (RMS) (front)	19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion
continuous power output (RMS) (rear)	19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more than 0.8% total harmonic distortion
load impedance	4 Ω (4 Ω to 8 Ω allowance)
tone control range (bass)	±10 dB at 100 Hz
tone control range (treble)	±10 dB at 10 kHz
frequency response	40 Hz to 20 000 Hz
signal-to-noise ratio	70 dB
line-out level/impedance	2.0 V/20 kΩ load (full scale)
output impedance	1 kΩ

CD Player

operating voltage	DC 14.4 V (11 V to 16 V allowance)
allowable operating temperature	0°C to +40°C
dimensions (W × H × D)	182 mm × 52 mm × 150 mm
panel size	188 mm × 58 mm × 11 mm
mass	1.3 kg (excluding accessories)
frequency response	5 Hz to 20 000 Hz
dynamic range	96 dB
signal-to-noise ratio	98 dB
max. bit rate	320 Kbps

Tuner

frequency range (FM)	87.5 MHz to 108.0 MHz
frequency range (AM MW)	522 kHz to 1 620 kHz
frequency range (AM LW)	144 kHz to 279 kHz
usable sensitivity	11.3 dBf (1.0 µV/75 Ω)
50 dB quieting sensitivity	16.3 dBf (1.8 µV/75 Ω)
alternate channel selectivity (400 kHz)	65 dB
frequency response	40 Hz to 15 000 Hz
stereo separation	30 dB
capture ratio	1.5 dB
sensitivity (MW)	20 µV
selectivity (MW)	35 dB
sensitivity (LW)	50 µV