Sony HCD-BX2 Service Manual

HCD-BX2/DX2/DX2B
SERVICE MANUAL
Ver 1.2 2001.07
HCD-BX2/DX2/DX2B is the Amplifier,
CD player, Tape Deck and Tuner
section in HMC-BX2/DX2/DX2B.
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol ; are trade-
marks of Dolby Laboratories Licensing Corporation.
AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from
120 – 10,000 Hz; rated 60 watts per channel
minimum RMS power, with no more than
10% total harmonic distortion from
250 milliwatts to rated output.
Amplifier section
Canadian model:
Continuous RMS power output
50 + 50 watts
(6 ohms at 1 kHz,
10% THD)
European model:
DIN power output (Rated)
40 + 40 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference)
50 + 50 watts
(6 ohms at 1 kHz,
10% THD)
Music power output (Reference)
100 + 100 watts
(6 ohms at 1 kHz,
10% THD)
Other models:
The following measured at AC 110, 220 V 60 Hz:
DIN power output (Rated)
45 + 45 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference)
50 + 50 watts
(6 ohms at 1 kHz,
10% THD)
The following measured at AC 120, 240 V 60 Hz:
DIN power output (Rated)
50 + 50 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference)
60 + 60 watts
(6 ohms at 1 kHz,
10% THD)
Sony Corporation
9-929-070-13
2001G0500-1 Home Audio Company
C 2001.7 Shinagawa Tec Service Manual Production Group
Photo: HCD-BX2
Model Name Using Similar Mechanism
CD
CD Mechanism Type
Section
Optical Pick-up Name
Model Name Using Similar Mechanism
Tape deck
Section
Tape Transport Mechanism Type

SPECIFICATIONS

Inputs
MD IN: voltage 450 mV,
(phono jacks) impedance 47 kilohms
Outputs
PHONES: accepts headphones of
(stereo mini jack) 8 ohms or more
SPEAKER:
HCD-BX2: accepts impedance of 6 to
16 ohms
HCD-DX2: accepts impedance of 6 to
16 ohms
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780nm)
Emission duration:
continuous
Max. 44.6 µ W*
Laser output
*This output is the value
measured at a distance of
200 mm from the
objective lens surface on
the Optical Pick-up Block
with 7 mm aperture.
Wavelength 780 – 790 nm
Frequency response 20 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength 660 nm
Output Level –18 dBm
MINI HiFi COMPONENT SYSTEM
US Model
Canadian Model
AEP Model
UK Model
E Model
HCD-DX2/DX2B
Australian Model
NEW
EXL-M7
OPTIMA-7
HCD-GRX20
CWL-44-FR
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 40 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Pan-American model: 530 – 1,710 kHz
(with the interval set at
10 kHz)
531 – 1,710 kHz
(with the interval set at
9 kHz)
European and Middle Eastern models:
531 – 1,602 kHz
(with the interval set at
9 kHz)
Other models: 531 – 1,602 kHz
(with the interval set at
9 kHz)
530 – 1,710 kHz
(with the interval set at
10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
– Continued on next page –
HCD-BX2
HCD-DX2