McIntosh MCD 7007 Service Manual
This is the 50 pages manual for McIntosh MCD 7007 Service Manual.
Read or download the pdf for free.
If you want to contribute, please mail your pdfs to info@audioservicemanuals.com.
Extracted text from McIntosh MCD 7007 Service Manual (Ocr-read)
Page 1
MCD 7007
COMPACT DISC PLAYER
CONTENTS
Performance Specifications ............................... 2
Notes ................................................. 2
Mechanical Views ....................................... 3-4
Front Panel and Trim Parts List ........................... 4
installation Parts List .................................... 4
Block Diagram .......................................... 5
Section Locations ....................................... 6
Section 1 - Interconnection Diagram ...................... 7-9
Section 2 -- A/C Relay ................................. 10-11
Section 3 - Servo and Laser ........................... 12-15
Section 4 - Decoder and Power Supply .................. 16-21
Section 5 - Illumination ............................... 22
Section 6 -- Control ................................... 23-26
Section 7 - Display and Keyboard ...................... 2731
Section 8 - Audio ..................................... 32-34
Section 9 - Headphone ................................ 35-36
Service Tests and Adjustments .......................... 37-42
Servo and Laser Waveforms ............................ 43-46
Decoder and Power Supply Waveforms ................... 46-49
Repacking Instructions ................................. V 50
Ultlninsfi Service Manual
Page 2
Performance
Specifications
TYPICAL AUDIO PERFORMANCE
NUMBER OF CHANNELS
2, left and right
FREQUENCY RESPONSE
20-20,000Hz, +0, -o.3da
DYNAMIC RANGE
96dB (11th EIA)
SIGNAL-TO-NOISE RATIO
107dB (A)
CHANNEL SEPARATION
iOZdB (at 1000H2)
TOTAL HARMONIC DISTORTION
0.0012% (at TOOOHZ)
WOW AND FLUTTER
Quartz crystal precision
SAMPLING RATE
176.4kHZ
D/A CONVERSION
Quadruple oversampling (176.4kHz)
with digital filter and two 16 bit
D/A Converters
ERROR CORRECTION SYSTEM
Cross Interleave Reed Solomon Code
(CIRC)
AUDIO OUTPUT LEVEL
2.5V
IMPEDANCE HEADPHONES
8-1000 ohms
DIGITAL OUTPUT
Output for digital signal processing
Notes
Unless otherwise noted, all voltages
indicated on the following schematics
are measured under the following
conditions:
a. AC input at 120 volts,
b.
2.
50/60Hz.
All voltages are 210% with
respect to ground. A high
impedance (10 megohm) voltmeter
must be used.
OPTICAL READOUT SYSTEM
LASER
Semiconductor AlGaAs
WAVE LENGTH
780nm
SIGNAL FORMAT
SAMPLING FREQUENCY
4h . 1 kHz
QUANTIZATION
16 bit linear/channel
DISC
SCANNING VELOCITY
1.2 to 1.4 m/s
ROTATION SPEED
500-200 rpm
PLAYING TIME (maximum)
74 minutes (stereo)
GENERAL INFORMATION
POWER SUPPLY
120V, SO/SOHZ, 30 watts
WEIGHT
18 pounds (8.2 kg) net,
(13.6 kg)
30 pounds
in shipping carton.
Unless otherwise specified:
a. Resistor values are in ohms.
b. Capacitor values smaller then 1
are microfarads (uF), and
capacitor values greater than 1
are in picofarads (pF).
c. Inductor values are in
microhenries (uH) .