Sony HCD-EC70 - Service Manual

SERVICE MANUAL
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
US Model
Canadian Model
COMPACT DISC DECK RECEIVER
9-887-133-02
2006C16-1
© 2006.03
Ver. 1.1 2006.03
SPECIFICATIONS
HCD-EC70
HCD-EC70 is the Amplifier, CD player, Tape
Deck and Tuner section in MHC-EC70.
Model Name Using Similar Mechanism NEW
CD
Base Unit Name BU-K6BD83S2-WOD
Section
Optical Pick-up Name KSM-213DCP
TAPE Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type —
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(The United States model only)
With 8 ohm loads, both channels driven, from 150 – 10,000 Hz; rated 80
watts per channel minimum RMS power, with no more than 10% total
harmonic distortion from 250 milliwatts to rated output.
Amplifier section
High frequency AMP:
Continuous RMS power output (reference): 80 + 80 W (8 ohms at
1 kHz, 10% THD)
Low frequency AMP:
Continuous RMS power output (reference): 160 W (4 ohms at
150 Hz, 10% THD)
Inputs
AUDIO IN (stereo mini jack): Sensitivity 800 mV, impedance
47 kilohms
Outputs
PHONES (stereo mini jack): Accepts headphones with an impedance
of 8 ohms or more
SPEAKER: Accepts impedance of 8 ohms
CD player section
System: Compact disc and digital audio system
Laser Diode Properties
Emission duration: continuous
Laser Output*: Less than 44.6 µW
* This output is the value measurement at a distance of 200mm from
the objective lens surface on the Optical Pick-up Block with 7mm
aperture.
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 90 dB
Tape deck section
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
FM lead antenna
AM loop antenna
FM tuner section:
Tuning range: 87.5 – 108.0 MHz (100 kHz step)
Intermediate frequency: 10.7 MHz
AM tuner section:
Tuning range: 530 – 1,710 kHz (with 10 kHz tuning interval)
531 – 1,710 kHz (with 9 kHz tuning interval)
Intermediate frequency: 450 kHz
General
Power requirementsl: AC 120 V, 60 Hz
Power consumption: 198 W
0.5 W (in Power off)
Dimensions (w/h/d): Approx. 200 × 306 × 395 mm
Mass: Approx. 6.4 kg
Design and specifications are subject to change without notice.

Summary

Specifications

Main Unit Specifications

Technical details for audio, amplifier, CD player, tape deck, tuner, and general unit functions.

Servicing Notes

Safety and Component Handling

Essential safety guidelines for handling components, circuit boards, and leakage testing.

General Operations

Basic Operations and Playback

Explains fundamental operations like volume control, audio playback, and tuning.

Troubleshooting and Messages

Common System Issues

Addresses common problems like no sound, hum, and remote malfunctions.

Component-Specific Problems

Solves issues with CD/MP3 player, tuner reception, and tape deck.

Adjustments

Mechanical Adjustments

Electrical Adjustments

Guides for head azimuth and tuning controls, including CD section checks.

Sony HCD-EC70 Specifications

General

Tuner Bands	FM/AM
CD Player	Yes
USB Playback	Yes
Bluetooth	Yes
Remote Control	Yes
Power Output	120 W
Functions	CD, USB, Bluetooth, Radio
Cassette Deck	Yes
Inputs	Audio In
Outputs	Headphone
Type	Mini Hi-Fi System
Output Power	60W + 60W (RMS)