MDX-CA680/CA680X
SERVICE MANUAL
Ver 1.1 2001.05
U.S. and foreign patents licensed from Dolby laboratories
Licensing Corporation.
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23 watts per channel minimum continuous average power into 4 ohms,
4 channels driven from 20 Hz to 20 kHz with no more than 5% total
harmonic distortion.
MD Player section
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Laser Diode Properties (US model)
Material
GaAlAs
Wavelength
780 nm
Emission Duration
Continuous
Less than 44.6 µW*
Laser output power
* This output is the value measured at a distance of
200 mm from the objective lens surface on the
Optical Pick-up Block.
Tuner section
FM
T
uning range
US model:
87.5 – 107.9 MHz
AEP, UK models:
87.5 – 108.0 MHz
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
Usable sensitivity
8 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
66 dB (stereo),
72 dB (mono)
Harmonic distortion at 1 kHz
0.6 % (stereo),
0.3 % (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM (US model)
Tuning range
530 – 1,710 kHz
Antenna terminal
External antenna connector
Intermediate frequency
10.7 MHz/450 kHz
30 µV
Sensitivity
Sony Corporation
9-870-242-12
2001E0500-1
e Vehicle Company
C 2001.5
Shinagawa Tec Service Manual Production Group
Photo: MDX-CA680X (US model)
Model Name Using Similar Mechanism
Base Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
MW/LW (AEP, UK models)
Tuning range
MW: 531 – 1,602 kHz
LW: 153 – 279 kHz
Aerial terminal
External aerial connector
Intermediate frequency
10.7 MHz/450 kHz
MW: 30 µV
Sensitivity
LW: 40 µV
Power amplifier section
Outputs
Speaker outputs
(sure seal connectors)
Speaker impedance
4 – 8 ohms
50 W × 4 (at 4 ohms)
Maximum power output
General
Outputs
Audio outputs (front/rear)
Power antenna relay control
lead
Power amplifier control lead
Inputs
Telephone ATT control lead
BUS control input
connector
BUS audio input connector
Remote controller input
connector
T
one controls
Antenna input connector
FM/AM (MW/LW) MINIDISC PLAYER
US Model
MDX-CA680X
AEP Model
UK Model
MDX-CA680/CA680X
NEW
MG-164MA-138
KMS-241C
Bass ±10 dB at 100 Hz
US model:
Treble ±10 dB at 15 kHz
Bass ±9 dB at 100 Hz
AEP, UK models:
Treble ±9 dB at 10 kHz
Power requirements
12 V DC car battery
(negative ground)
Approx. 178 × 50 × 177 mm
Dimensions
1
× 2 × 7 in.)
(7
/
8
(w/h/d)
Approx. 182 × 53 × 161 mm
Mounting dimensions
× 2
× 6
1
1
(7
/
/
4
8
(w/h/d)
Mass
Approx. 1.2 kg
(2 lb 10 oz)
Supplied accessories
Parts for installation and
connections (1 set)
Front panel case (1)
Note
This unit cannot be connected to a digital preamplifier
or an equalizer.
Design and specifications are subject to change
without notice.
3
/
in.)
8