Kenwood KDC-W7041U Service Manual

This product uses Lead Free solder.
This product complies with the
RoHS directive for the European market.
© 2008-3 PRINTED IN JA PAN
B53-0627-00
(
N
)
429
SERVICE MANUAL
KDC-MP638U/W7041U
/W7141UY/X692/X7009U
CD RECEIVER
KDC-MP638U
KDC-X692
KDC-W7141U
KDC-X7009U
KDC-X7009U
(M type)
KDC-W7041U
KDC-W7141UY
(E type)
KDC-X692
(K type)
SIZE AA BATTERY
(Not supplied)
Panel assy
(A64-4427-02)
MODEL TDF PANEL No. TDF NAME
KDC-X692 Y33-2940-62 TDF-87DX
KDC-MP638U Y33-2940-63 TDF-MP87D
KDC-W7041U/W7141UY Y33-2940-65 TDF-W7041U
KDC-X7009U Y33-2940-67 TDF-X7009U
CD MECHANISM EXTENSIONCORD (30P) : E39-1014-05
DC cord (K,M type)
(E30-6428-05)
DC cord (E type)
(E30-6671-05)
Escutcheon
(B07-3235-03): KDC-X692
(B07-3238-03): K,E,M type
Mounting hardware assy
(J22-0011-03)
Remote controller assy
(A70-2085-05): except KDC-W7041U
Lever
(D10-7012-04) x2
Carrying case
(W01-1664-05): KDC-X692
(W01-1710-05): K,E type
Compact disc
(W01-1723-05)
Screw set (K,M type)
(N99-1757-15)
Screw set (K,M type)
(N99-1730-35)
Panel assy
(A64-4429-02): KDC-W7041U
(A64-4430-02): KDC-W7141UY
RC-547
Panel assy
(A64-4426-02)
Plastic cabinet assy (M type)
(A02-2757-03)
TDF SPARE-PANEL
Cover (KDC-X692)
(F19-1475-04)
Screw set (KDC-X692)
(N99-1790-05)
KDC-MP638U
(K type)
Panel assy
(A64-4432-02)

Kenwood KDC-W7041U Specifications

FM Tuner Section

FM frequency range	87.5 MHz – 108.0 MHz
FM usable sensitivity	0.7 μV/75 Ω
FM quieting sensitivity	1.6 μV/75 Ω
FM frequency response	30 Hz – 15 kHz
FM signal to noise ratio	65 dB
FM selectivity	≥ 80 dB
FM stereo separation	35 dB

MW Tuner Section

MW frequency range	531 kHz – 1611 kHz
MW usable sensitivity	25 μV

LW Tuner Section

LW frequency range	153 kHz – 281 kHz
LW usable sensitivity	45 μV

CD Player Section

CD laser diode	GaAlAs
CD digital filter	8 Times Over Sampling
CD D/A converter	24 Bit
CD spindle speed	500 – 200 rpm (CLV)
CD frequency response	10 Hz – 20 kHz
CD total harmonic distortion	0.008 %
CD signal to noise ratio	110 dB
CD dynamic range	93 dB

USB Interface

USB standard	USB1.1/ 2.0
USB maximum supply current	500 mA
USB file system	FAT16/ 32

Audio Section

Maximum output power	50 W x 4
Output power (DIN 45324)	30 W x 4
Speaker impedance	4 – 8 Ω
Tone action - Bass	100 Hz ±8 dB
Tone action - Middle	1 kHz ±8 dB
Tone action - Treble	10 kHz ±8 dB
Preout level / Load (KDC-W7541U/W7541UY)	4000 mV/10 kΩ
Preout level / Load (KDC-W7041U/W7141UY)	2500 mV/10 kΩ
Preout impedance	≤ 600 Ω

Auxiliary Input

Auxiliary frequency response	20 Hz – 20 kHz
Auxiliary input maximum voltage	1200 mV
Auxiliary input impedance	100 kΩ

General

Operating voltage	14.4 V
Current consumption	10 A
Installation size	182 x 53 x 155 mm
Weight	1.40 kg