Kenwood DP-4090 Service Manual

COMPACT DISC PLAYER
DP-4090/DP-5090/D-S300
SERVICE MANUAL
© 1997-6/B51-5324-00 (K/K) 2172
76
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PHONES
POWER
-ON –OFF
DIGITAL AUDIO
COMPACT
0
TEXT
L
R
L
R
LINE 1 LINE 2
OUTPUT
DIGITAL
OUTPUT
SYSTEM
CONTROL
OPTICAL COAXIAL
SL16 XS 8
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TEXT
KENWOOD badge
(B43-0302-04)
Front glass
(B10-2300-04)
Color filter
(B11-0346-04)
Panel *
(A60-)
Metallic cabinet
(A01-3398-01)
Power cord *
(E30-)
Phono jack *
(E63-)
Phono jack *
(E63-)
Slide switch
(S31-2094-05)
Minitature phono jack *
(E11-)
Power cord bushing
(J42-0083-05)
Knob (BUTTON)
(K27-2178-04)
Phone jack
(E11-0190-05)
Dressing panel *
(A21-)
Door
(A52-0312-14)
Soft tape
(G11-2314-04)
Soft tape
(G11-2272-04)
In compliance with Federal Regulations, following are reproductions of
labels on, or inside the product relating to laser product safety.
KENWOOD-Corp. certifies this equipment conforms to DHHS Regulations
No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Illust is DP-5090.
* Refer to parts list on page 27.

Kenwood DP-4090 Specifications

General

Type	CD Player
Disc format	CD
Channels	2
Channel separation	100 dB
Weight	3.9 kg
Power Consumption	12 W
Digital converter	1-bit D/A converter
Frequency Response	2 Hz to 20 kHz
Output Level	2.0V
Line output	RCA
Digital outputs	Coaxial

Summary

Product Overview and Safety

Laser Radiation Safety Warning

Provides critical safety information regarding laser radiation exposure.

Accessories and Handling

Transportation and Movement Caution

Details necessary steps before transporting or moving the unit.

External View - D-S300

Disassembly Procedures

Tray Removal Method

Step-by-step guide on how to remove the CD tray.

System Block Diagram

Circuit Description

Main Microprocessor and Peripherals

Describes the main microprocessor and its connected peripheral components.

Pin Descriptions

Detailed explanation of the function for each pin on key ICs.

Test Mode Operations

Entering and Using Test Mode

Instructions on how to activate and operate the unit's test mode.

Adjustment Procedures

Key Test Mode Adjustments

Details adjustments for Laser Power, Tracking, and Focus Error.

PC Board Layouts

D/A Converter Unit Board

Component layout diagram for the D/A Converter unit.

Processor Unit Board

Component layout diagram for the Processor unit.

Display Unit Board

Component layout diagrams for the Display unit.

Exploded Views

Mechanism Assembly

Diagram showing the exploded view of the player's mechanism.

Unit Components

Diagram showing the exploded view of the player's unit.

Parts List

Parts Descriptions and Codes

Specifications

DP-5090 and DP-4090 Model Specifications

Technical specifications for the DP-5090 and DP-4090 models.

D-S300 Model Specifications and Notes

Technical specifications for the D-S300 model and important notes.