JVC KD-G501 Service Manual

1-26 (No.MA038)
SECTION 5
TROUBLE SHOOTING
5.1 Feed section
5.2 Focus section
5.3 Spindle section
5.4 Tracking section
Check the feed motor.
Is 4V present at both
sides of the feed motor?
Is the wiring for IC541
pin 40 correct?
NO
YES
YES
Is the voltage output at
IC541 pin 40 5v or 0V
NO
Is 6V or 2V present at
IC501 pins 4 and 5?
NO
Check IC501.
YES
YES
Is 5V present at IC501
pins 3,12 and 21?
Check the feed motor
connection wiring.
YES
Check the vicinity of
IC541.
NO
Check CD 8V.
NO
When the lens is
moving:
Check the circuits in
the vicinity of IC501
pins 8 and 9.
Does the S-search
waveform appear at
IC501 pins 8 and 9?
4V
YES
NO
YES
Check the pickup and
its connections.
Is the disk rotated?
YES
NO
Is 4V present between
IC501 pins 6 and 7?
NO
Is 4V present at IC541
pin 41?
NO
Check IC541.
Does the RF signal
appear at IC521 pin 19?
YES
YES
Check the spindle motor
and its wiring.
Is the RF waveform
at IC521 pin 19
distorted?
YES
Proceed to the Tracking
section
Check the circuits in
the vicinity of IC521
pin 19 or the pickup.
NO
NO
YES
Check the vicinity of
IC501
When the disc is rotated
at first:
Approx. 1.2V
Is the tracking error
signal output at
IC521 pin 11?
YES
Check IC541.
Check the circuits in
the vicinity of IC501
pins 2 to 11.
NO
Check the pickup and
its connections.
NO

JVC KD-G501 Specifications

Audio Amplifier Specifications

maximum power output front	50 W per channel
maximum power output rear	50 W per channel
continuous power output 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 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 Specifications

operating voltage	DC 14.4 V (11 V to 16 V allowance)
allowable operating temperature	0°C to +40°C
dimensions installation size	182 mm × 52 mm × 150 mm
dimensions panel size	188 mm × 58 mm × 12 mm
mass	1.4 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 Specifications

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 FM	11.3 dBf (1.0 µV/75 Ω)
50 dB quieting sensitivity FM	16.3 dBf (1.8 µV/75 Ω)
alternate channel selectivity (400 kHz) FM	65 dB
frequency response FM	40 Hz to 15 000 Hz
stereo separation FM	30 dB
capture ratio FM	1.5 dB
sensitivity MW	20 µV
selectivity MW	35 dB
sensitivity LW	50 µV