Sony HCD-BX2 Service Manual

SERVICE MANUAL
MINI HiFi COMPONENT SYSTEM
US Model
Canadian Model
AEP Model
UK Model
HCD-BX2
E Model
HCD-DX2/DX2B
Australian Model
HCD-DX2
SPECIFICATIONS
HCD-BX2/DX2/DX2B
HCD-BX2/DX2/DX2B is the Amplifier,
CD player, Tape Deck and Tuner
section in HMC-BX2/DX2/DX2B.
Photo: HCD-BX2
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.
Model Name Using Similar Mechanism NEW
CD Mechanism Type EXL-M7
Optical Pick-up Name OPTIMA-7
Model Name Using Similar Mechanism HCD-GRX20
Tape Transport Mechanism Type CWL-44-FR
CD
Section
Tape deck
Section
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)
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
Laser output Max. 44.6
µ W*
*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
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 –
Ver 1.2 2001.07
9-929-070-13 Sony Corporation
2001G0500-1 Home Audio Company
C 2001.7 Shinagawa Tec Service Manual Production Group

Sony HCD-BX2 Specifications

General

CD Player	Yes
FM/AM Tuner	Yes
Bluetooth	No
USB Port	No
Speaker Configuration	2.0
Tuner Bands	FM, AM
Cassette Deck	Yes
Type	Mini System
Functions	CD, Radio, Cassette

Summary

Specifications

Audio Power Specifications

Details on power output and total harmonic distortion for various models.

Amplifier Section Specifications

Continuous RMS and music power output ratings for amplifier section.

CD Player Section Specifications

Technical details for the CD player system, laser, and output.

Tape Player Section Specifications

Recording system and frequency response for the tape deck.

Tuner Section Specifications

Tuning ranges, antenna details, and intermediate frequencies for FM/AM.

General Unit Information

Power Requirements and Consumption

Details on power voltage, frequency, and consumption for different models.

Dimensions, Mass, and Accessories

Physical dimensions, weight, and supplied accessories for the unit.

Servicing Notes

Optical Pick-up Block Handling

Notes on handling the optical pick-up block to prevent electrostatic breakdown.

Laser Diode Emission Check Procedure

Instructions for safely checking the laser diode emission.

Chip Component Replacement Guidelines

Precautions for replacing chip components, especially tantalum capacitors.

Flexible Circuit Board Repair

Guidelines for repairing flexible circuit boards, including soldering temperature.

System Operation

Location of Controls Overview

Identification and description of front and rear panel controls.

Setting the Clock Time

Step-by-step instructions for setting the unit's clock time.

Disassembly Procedures

Diagrams and Schematics

Printed Wiring Board & Schematic Notes

General notes and symbols used in diagrams and schematics.

CD Section Schematics

Detailed schematic diagrams for the CD section (parts 1-4).

CD Section Printed Wiring Boards

Layout of the printed wiring boards for the CD section.

Main Board Schematics

Detailed schematic diagrams for the main board (parts 1-4).

Panel Section Schematics

Detailed schematic diagrams for the panel section (parts 1-3).

AMP Board Schematics & PWBs

Schematics and PWB layouts for the AMP board for various models.

Waveform Analysis

Visual representations of key waveforms at different circuit points.

Exploded Views

Top Cabinet Section Exploded View

Exploded view and parts list for the top cabinet section.

Front Panel Section Exploded View

Exploded view and parts list for the front panel section.

Bottom Cabinet Section Exploded View

Exploded view and parts list for the bottom cabinet section.

CD Mechanism Deck Exploded Views

Exploded views and parts lists for CD mechanism deck sections 1-3.

Electrical Parts List

Revision History