Sony HCD-MD5 Service Manual

MICROFILM
AEP Model
UK Model
E Model
Tourist Model
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
HCD-MD5
SPECIFICATIONS
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Laser output Max. 44.6 µW*
*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.
Frequency response 2 Hz – 20 kHz (±0.5 dB)
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
MD deck section
System MiniDisc digital audio
system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Laser output Max. 44.6 µW*
*This output is the value
measured at a distance of
200 mm from the objective
lens surface on the Optical
Pick-up Block with a
7 mm aperture.
Recording time 74 minutes max. (using
MDW-74)
Sampling frequency 44.1 kHz
Frequency response 5 Hz to 20 kHz
Amplifier section
DIN power output 40 W + 40 W
(6 ohms, at 1 kHz, DIN)
Continuous RMS power output
50 + 50 watts
(6 ohms at 1 kHz, 10% THD)
Peak music power output
700 watts
Music power output 160 watts
Inputs VIDEO/GAME IN
(phono jacks)
(switchable)
VIDEO IN:
voltage 250 mV,
impedance 47 kilohms
GAME IN:
voltage 450 mV,
impedance 47 kilohms
TAPE IN (phono jacks):
voltage 250mV,
impedance 47 kilohms
Outputs TAPE OUT (phono jacks):
voltage 250 mV
impedance 1 kilohms
PHONES (stereo phone jack):
accepts headphones of
8 ohms or more.
SPEAKER: accepts impedance of 6 to
16 ohms.
Model Name Using Similar Mechanism HCD-W55
CD
CD Mechanism Type
CDM38A-5BD19
Section
Base Unit Name BU-5BD19
Optical Pick-up Name KSS-213B/K-N
Model Name Using Similar Mechanism NEW
MD
MD Mechanism Type MDM-2FR
Section
Base Unit Name MBU-2F
Optical Pick-up Name KMS-210A/J-N
– Continued on next page –
HCD-MD5 is the amplifier, CD, MD
and tuner section in DHC-MD5.
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.

Sony HCD-MD5 Specifications

General

Type	Mini Hi-Fi Component System
Disc Compatibility	CD, MD
CD Player	Yes
MD Player/Recorder	Yes
Tuner	AM/FM
Amplifier	Integrated
Speakers	2-way speakers
Frequency Response	20Hz - 20kHz
Functions	CD Playback, MD Playback, Tuner, Amplifier

Summary

Specifications

CD Player Section Specifications

MD Deck Section Specifications

Amplifier Section Specifications

Servicing Notes

Handling the Optical Pick-Up Block

Precautions for handling the optical pick-up block to prevent electrostatic breakdown.

Laser Diode Emission Check

Guidelines for safely checking the laser diode emission without damaging eyesight.

Chip Component Replacement

Notes on replacing chip components, including handling tantalum capacitors.

Flexible Circuit Board Repair

Test Modes

Check Mode for Amplifier Section

Aging Mode for CD and MD Sections

Fluorescent Indicator Tube and Key Check Mode

Electrical Adjustments

Laser Diode Emission Precautions (MD Section)

Precautions for checking laser diode emission during adjustments.

Optical Pick-Up Precautions (MD Section)

Precautions for handling the optical pick-up to prevent damage from static electricity.

General Adjustment Precautions

Important precautions and tools required for performing electrical adjustments.

Temperature Compensation Offset Adjustment

Procedure to adjust and save temperature compensation data.

Laser Power Adjustment

Procedure to adjust laser power for the optical pick-up.

Traverse (E-F Balance) Adjustment

Procedure to adjust the E-F balance for traverse tracking.

Focus Bias Adjustment

Procedure to adjust focus bias by checking error rates.

Error Rate Check

Procedure for checking CD and MO error rates.

Focus Bias Check

Procedure to check focus bias and tolerance amount.

Diagrams and Illustrations

Block Diagrams (MD, Tuner, Main)

Schematic Diagrams (Various Sections)

Printed Wiring Boards (Various Sections)

IC Pin Function Descriptions