Kenwood KDC-4090R User Manual

© 2000-12 PRINTED IN JAPAN
B51-7706-00(S) 1995
SERVICE MANUAL
CD RECEIVER
KDC-4090R/Y
● KDC-4090R
PTY
KDC-4090R
AUD
PWR OFFLOUD SCANSCRL RDM REP
VOL ADJ
T1
MENU
COMPACT
DIGITAL AUDIO
45Wx4
M. RDM
Knob(EJ)
(K24-3653-04)
Front glass
(B10-4001-01)
Panel assy
(A64-2213-02)
Knob(Q)
(K24-3652-04)
Knob(VOL)
(K25-1256-03)
Knob(1-6)
(K25-1253-03)
Knob(CLK)
(K25-1254-03)
Knob(FM/AM)
(K25-1255-03)
DC CORD
(E30-4790-05)
MOUNTING HARDWARE ASSY
J21-9641-03)
PLASTIC CABINET ASSY
(A02-1486-13)
LEVER
(D10-4589-04)
ANTENNA ADAPTOR
(T90-0523-05:4090RY)
(T90-0534-05:4090R)
(

Kenwood KDC-4090R Specifications

FM Section

frequency range	87.5MHz~108.0MHz
usable sensitivity	0.7µV/75Ω
quieting sensitivity	1.6µV/75Ω

MW Section

frequency range	531kHz~1611kHz
usable sensitivity	25µV

LW Section

frequency range	153kHz~281kHz
usable sensitivity	45µV

CD Section

laser diode wavelength	780nm
spindle speed	500~200(CLV)
frequency response	10~20kHz(±1dB)

Amplifier Section

preout level/load	1800mV/10kΩ
preout impedance	≤ 600Ω
maximum power	45W×4

Tone Section

bass	100Hz±10dB
middle	1kHz±10dB
treble	10kHz±10dB

General Specifications

operating voltage	14.4V (11V~16V allowable)
current consumption	10A
weight	1.5kg(3.31lbs)

Summary

BLOCK DIAGRAM

COMPONENT DESCRIPTION

MICROCOMPUTER'S TERMINAL DESCRIPTION

ADJUSTMENT

Test Mode Operations

Procedures for entering, exiting, and specifications of test modes.

Adjustment Mode Procedures

Details on adjustable items, default values, and adjustment procedures.

Printed Circuit Board Layouts

General PCB Views

Component and foil side views of the main PCB.

CD Player Unit PCB Layouts

CD Player Unit Views

Component and foil side views of the CD Player Unit PCB.

SCHEMATIC DIAGRAM

Electrical Schematic Details

Comprehensive electrical schematic of the unit.

Exploded Assembly Views

CD Mechanism Assembly Diagram

Diagram showing the assembly of the CD mechanism.

Unit Assembly Diagram

Diagram showing the assembly of the main unit.

Parts List

Switch Unit Parts

List of parts for the switch unit.

Electric Unit Parts

List of parts for the electric unit.

Technical Specifications

FM Section Specifications

Technical details for the FM tuner section.

Amplifier Section Specifications

Technical details for the amplifier section.

CD Section Specifications

Technical details for the CD playback section.