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Kenwood DMF-3020 Service Manual

Kenwood DMF-3020
25 pages
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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 Regulation No.21 CFR 1040.10, Chapter 1,
Subchapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Illustration is DMF-3020.
* Refer to parts list on page 23.
STEREO MINIDISC RECORDER
DMF-3020/3020(S)/5020
MD-203
SERVICE MANUAL
©
1998-9/B51-5480-00 (K/K) 2945
REC IN
R
L
R
L
PLAY OUT
(VARIABLE)
PLAY
OUT
OPT.COAX.
REC
IN
2 COAX.1 OPT.
LINE
SYSTEM
CONTROL
DIGITAL
MIN
REC LEVEL
PHONES
ENTER
/TIME DISPLAY
REC MODE/CHARAC.
SET
REC INPUT
MONITOR
/DELETE
STANDBY
POWER
JOG DIAL
TITLE INPUT
EDIT/SPACE
MAX
DISC LOADING MECHANISM
STEREO MINIDISC RECORDER
1
37
¡
0
- ON OFF
TIMER
REC OFF PLAY
OUTPUT
LEVEL
REC
Phone jack *
(E11-)
Knob
(K29-7536-04)
Panel
(A60-1530-11)
Indicator
(B12-0353-04)
Knob
(K27-2178-04)
Phono jack
(E63-1065-05)
Metallic cabinet
(A01-3635-01)
Miniature phono jack
(E11-0293-05)
Phono jack
(E63-0160-05)
Optic receiving module
(W02-1181-05)
Oscillating module
(W02-1114-05)
AC power cord *
(E30-)
Power cord bushing
(J42-0083-05)
Filter
(B11-0376-04)
Front glass
(B10-3426-03)
Escutcheon *
(B07-)
Knob
(K29-7412-02)
Knob
(K29-7412-02)
Knob
(K29-7354-14)
KENWOOD badge
(B43-0302-04)
Refer to 1050MD/DM-5090/DM-9090 service manual
(B51-5387-00) if you see the mechanism test mode.
DMF-5020(K) COVER1,1P( 98.12.9 16:39 y[W 2
www.freeservicemanuals.info
9/8/2013
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Kenwood DMF-3020 Specifications

DMF-5020

Digital Audio Performance IconDigital Audio Performance
frequency response (playback mode)8 Hz ~ 20 kHz (± 1 dB)
signal to noise ratio (playback mode)More than 105 dB
dynamic range (playback mode)More than 94 dB
total harmonic distortion (1 kHz, playback mode)Less than 0.007 %
analog input sensitivity / input impedance500 mV / 22 kΩ or more
analog output level / output impedance2.0 V / Less than 400 Ω
headphone output20 mW/32 Ω load
digital input (coxaial)0.5 Vp-p / 75 Ω
digital input (optical)Wave length 660 nm, - 15 dBm ~ - 21 dBm
digital output (coxaial)0.5 Vp-p / 75 Ω
digital output (optical)Wave length 660 nm, - 15 dBm ~ - 21 dBm
General Specifications IconGeneral Specifications
power consumption18 W
dimensions (W x H x D)440 mm x 94 mm x 379 mm
weight4.0 kg

DMF-3020/MD-203

Digital Audio Performance IconDigital Audio Performance
frequency response (playback mode)8 Hz ~ 20 kHz (± 1 dB)
signal to noise ratio (playback mode)More than 100 dB
dynamic range (playback mode)More than 90 dB
total harmonic distortion (1 kHz, playback mode)Less than 0.01 %
analog input sensitivity / input impedance500 mV / 22 kΩ or more
analog output level / output impedance2.0 V / Less than 400 Ω
headphone output20 mW/32 Ω load
digital input (coxaial)0.5 Vp-p / 75 Ω
digital input (optical)Wave length 660 nm, - 15 dBm ~ - 21 dBm
digital output (coxaial)0.5 Vp-p / 75 Ω
digital output (optical)Wave length 660 nm, - 15 dBm ~ - 21 dBm
General Specifications IconGeneral Specifications
power consumption18 W
dimensions (W x H x D)440 mm x 94 mm x 379 mm
weight4.0 kg

Summary

Main Unit Display and Controls

Main Unit Key Descriptions

Explains the function of each button and control on the main unit's front panel.

Headphone Listening Guide

Instructions for connecting and adjusting the volume for headphone output.

Standby Mode Operation

Details the unit's standby state, memory backup, and remote power-on.

Remote Control Operation

Remote Control Unit (DMF-3020/MD-203)

Details the functions and layout of the remote control for specific models.

Remote Control Unit (DMF-5020)

Details the functions and layout of the remote control for the DMF-5020 model.

Block Diagram Overview

Circuit Description

Main Microprocessor (uPD784215GF532)

Details the main microprocessor and its pin description for system control.

AD/DA Converter Details

Provides information on the AD/DA converter and its specifications.

Unit Test Mode Operations

Explains how to access and utilize the unit's various test modes.

Microprocessor Reset Procedure

Instructions for resetting the microprocessor to its default state.

Mechanism Test Mode Reference

Guides users to a separate manual for mechanism-specific testing.

Initialization Procedures

Outlines initialization steps for various functions and controls.

Switch Control Table

Details the functionality and modes associated with different switches.

Key Voltage Matrix

Provides voltage readings for key inputs during specific operations.

PC Board Layout

Schematic Diagram

Electric Unit Schematic

Exploded View (Mechanism)

Exploded View (Unit)

Parts List

Specifications

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