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COMPACT DISC CHANGER
CONTENTS
Performance Specifications ....................................... Notes ......................................................................... Rear View and Section Location ................................. Block Diagram ........................................................... Interconnection Diagram ........................................... 2 2 3 4 5 Audio/Power Schematic and PCB ........................ 7 - 12 Display Schematic and PCB ................................ 13 -16 Parts List ............................................................ 17 - 18 Exploded View and Parts Lists ........................... 19 - 20 Repacking Instructions ............................................. 21
SERVICE MANUAL
PERFORMANCE SPECIFICATIONS
Frequency Response +0, -0.5dB from 5Hz to 20,000Hz Signal To Noise Ratio 108dB (IHF A-weighted) Dynamic Range 100dB Harmonic Distortion 0.002% Channel Separation 105dB Maximum Output Level 2.0Vrms Balanced 2.0Vrms Unbalanced Output Impedance 600 ohms Balanced 600 ohms Unbalanced Sampling Frequency 44,100Hz D/A Converter 24-bit dual converters with 8 times over sampling digital filter Error Correction CIRC Quantization 16-bit linear Digital Output Optical: -15dBm to 21dBm Coaxial: 0.5v p-p/75 ohm Transport Signal Readout Type Semiconductor Optical Laser Disc Rotational Velocity 200 to 500rpm (constant linear velocity) Wow and Flutter Below current measurement limits Power Requirements 100 Volts, 50/60Hz at 25 watts 110 Volts, 50/60Hz at 25 watts 120 Volts, 50/60Hz at 25 watts 220 Volts, 50/60Hz at 25 watts 230 Volts, 50/60Hz at 25 watts 240 Volts, 50/60Hz at 25 watts
Note: Refer to the rear panel of the MCD205 for the correct voltage.
Dimensions Front Panel: 17-1/2 inches (44.5cm) wide, 5-3/8 inches (13.7cm) high. Depth behind front mounting panel is 15 inches (38.1cm) including clearance for connectors. Panel clearance required in front of mounting panel is 3/4 inch (1.9cm).
Note: When a CD Disc is inserted or ejected, the panel clearance required in front of mounting panel is 3-3/4 inches (9.5cm).
Weight 21 pounds (9.5kg) net, 35 pounds (15.9kg) in shipping carton
NOTES
1. The heavy notes on the schematic denote the primary signal path. 2. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at 120 volts, 50/60Hz. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used. 3. Unless otherwise specified: a. Resistor values are in ohms. b. Capacitor values are microfarads (uF). c. Inductor values are in microhenries (uH). 4. On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 1
5.
WARNING
Parts marked with the symbol have critical characteristics. Use only replacement parts recommended by the manufacturer.
MusicBank
TM
is a registered trademark of the Nakamichi Corporation
2
MCD205
REAR VIEW
SECTION LOCATION
TOP VIEW WITH COVER REMOVED
3
BLOCK DIAGRAM
4
MCD205
1
INTERCONNECT
5
NOTES
6
MCD205
2
AUDIO/POWER
049730 SH 1 OF 2
7
8
8
9
2
AUDIO/POWER
049730 SH 2 OF 2
10
11
1
12
EXPLODED VIEW and PARTS LIST
Ref No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
Part No.
016468 148073 017531 017517 078033 017879 094016 098113 018588 100147 018585 017798 094360 005090 018611 101042 092419 017885 017892 017886 094017 049731 058153 005224 101196 101054 005222 005223 102003 320110 310330 100300 005228 005229 049730 005227 117755 102001 102020 100271 104005 101197 112015 104142 005226 159334 117800 019058 112083 100180 017218 104083 100159 005102 101078
Description
GLASS SWITCH DPDT ROCKER PUSHBUTTON ASSY RED PUSHBUTTON ASSY BLK O-RING BEZEL GLASS TAPE FOAM 1/4 X 1/8 CORD DIAL .027 BLACK BRAID SILK EXTRUSION BOTTOM SCREW MACHINE 6-32 X 3/16 PHIL EXTRUSION TOP GUIDES PRINTED CIRCUIT TAPE FOAM 1/2 X 1/2 BRACKET EXTRUSION ENDCAP 5" SCREW TS 4-40 X 1/2 SLOT FILLISTER FILTER DISPLAY PLEXIGLAS DISPLAY RIGHT PLEXIGLAS DISPLAY LEFT PLEXIGLAS LOGO TAPE FOAM 1/4 X 1/4 ASSY PCB DISPLAY LAMP INCANDESCENT SUBPANEL SCREW TAP SEMS 6-32 X 1/4 PH PN SCREW TAPTITE 6-32 X 1/4 PH PN ZEE BRACKET RIGHT ZEE BRACKET LEFT NUT MACHINE 6-32 W/LOCK 5 DISC CD CHANGER METRIC SCREWS MCD205 CHANGER SCREW MACH SEMS 6-32 X 1 PH PN BRACKET MOUNTING RIGHT BRACKET MOUNTING LEFT ASSY PCB AUDIO-POWER REAR PANEL RECEPTACLE INPUT & LINE FILTER NUT KEP 4-40 CADMIUM PLATE NUT 6-32 SELF-LOCK SCREW SEMS 6-32 X 1/4 PH PN WASHER FLAT STEEL 6 X 3/8 X .032 SCREW HI/LO 4-24 X 3/8 PH RD BLK STANDOFF WASHER LOCK 2.5mm INT STAR ZINC CHASSIS TRANSFORMER R-CORE POWER MTA CONNECTOR 8 PIN .156 SPRING STANDOFF 6-32 X 1.250 SCREW 6-32 X 1/8 PH PN FOOT PLASTIC BLACK WASHER #10 PLATED SCREW MACH 10-32 X 3/4 PH PN BLK COVER TOP SCREW TAP 8-32 X 5/16 PH PN BLK
19
20
MCD205
REPACKING INSTRUCTION
21
COMPACT DISC CHANGER
SERVICE MANUAL
The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated, who reserve the right to improve design without notice. Because of the constant upgrading of McIntosh products' circuitry and components, the Company cannot insure, and does not warrant, the accuracy of the within schematic material, which is intended for information only. McINTOSH LABORATORY, INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903 Printed in U.S.A. Part Number 040834