Sony HCD-EC55 User Manual

SERVICE MANUAL
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
US Model
Canadian Model
HCD-EC55/EC77/GX99
AEP Model
HCD-EC55/EC77
UK Model
HCD-EC55
E Model
Australian Model
HCD-EC55/EC77
COMPACT DISC DECK RECEIVER
9-887-532-03
2007G16-1
© 2007.07
Ver. 1.2 2007.07
SPECIFICATIONS
HCD-EC55/EC77/GX99
• HCD-EC55 (US and Canadian models) and HCD-EC77/
GX99 (US and Canadian models) are the Amplifier, CD
player and Tuner section in MHC-EC55/EC77/GX99.
• HCD-EC55 (Except US and Canadian models) and
HCD-EC77/GX99 (Except US and Canadian models)
are the Amplifier, CD player, Tape Deck and Tuner
section in MHC-EC55/EC77/GX99.
Model Name Using Similar Mechanism NEW
CD
Base Unit Name BU-K6BD90-WOD
Section
Optical Pick-up Name KSM-213DCP
TAPE Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type CS-21SC-901TP
Photo : HCD-EC55 (E model)
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(HCD-GX99, HCD-EC77 The United States model only)
Low channel
With 8 ohm loads, both channels driven, from 120 – 10,000 Hz; 60 watts
per channel minimum RMS power, with no more than 0.7% total harmonic
distortion from 250 milliwatts to rated output.
High channel
With 8 ohm loads, both channels driven, from 2,000 – 13,000 Hz; 60 watts
per channel minimum RMS power, with no more than 0.7% total harmonic
distortion from 250 milliwatts to rated output.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(HCD-EC55 The United States model only)
With 6 ohm loads, both channels driven, from 120 – 10,000 Hz; 45 watts
per channel minimum RMS power, with no more than 0.7% total harmonic
distortion from 250 milliwatts to rated output.
Amplifier section
HCD-GX99
Front speaker:
RMS output power (reference):
Low channel
95 W + 95 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
95 W + 95 W (per channel at 8 Ω, 8 kHz, 10% THD)
Subwoofer:
RMS output power (reference):
150 W (at 6 Ω, 80 Hz, 10% THD)
HCD-EC77
North American model:
RMS output power (reference):
Low channel
95 W + 95 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
95 W + 95 W (per channel at 8 Ω, 8 kHz, 10% THD)
European and Russian models:
Power output (rated):
Low channel
45 W + 45 W (at 8 Ω, 1 kHz, 1% THD)
High channel
45 W + 45 W (at 8 Ω, 8 kHz, 1% THD)
RMS output power (reference):
Low channel
65 W + 65 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
65 W + 65 W (per channel at 8 Ω, 8 kHz, 10% THD)
Other models:
The following are measured at AC 120, 127, 220, 240 V, 50/60 Hz
Power output (rated):
Low channel
50 W + 50 W (at 8 Ω, 1 kHz, 1% THD)
High channel
50 W + 50 W (at 8 Ω, 8 kHz, 1% THD)
RMS output power (reference):
Low channel
70 W + 70 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
70 W + 70 W (per channel at 8 Ω, 8 kHz, 10% THD)
HCD-EC55
North American model:
RMS output power (reference):
65 W+ 65 W (per channel at 6 Ω, 1 kHz, 10% THD)
European and Russian models:
Power output (rated): 45 W + 45 W (at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
65 W + 65 W (per channel at 6 Ω, 1 kHz, 10% THD)
Other models:
The following are measured at AC 120, 127, 220, 240 V, 50/60 Hz
Power output (rated): 45 W + 45 W (at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
65 W + 65 W (per channel at 6 Ω, 1 kHz, 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 Ω or more
SPEAKER: Accepts impedance of 6 to 8 Ω
SUBWOOFER OUT (HCD-GX99 only)
CD player section
System: Compact disc and digital audio system
Laser: Semiconductor laser (λ=770 – 810 nm)
Emission duration: continuous
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 88 dB
Tape deck section(Except for North American model)
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
North American model: 87.5 – 108.0 MHz (100 kHz step)
Other models: 87.5 – 108.0 MHz (50 kHz step)
Intermediate frequency: 10.7 MHz
— Continued on next page —

Sony HCD-EC55 Specifications

General

Brand	Sony
Model	HCD-EC55
Category	Stereo System
Language	English

Summary

SERVICE MANUAL OVERVIEW

SPECIFICATIONS

Details power output, inputs, outputs, and component sections.

SERVICING PROCEDURES

SERVICING NOTES & PRECAUTIONS

Critical safety checks, component replacement, and handling guidelines.

DISASSEMBLY

Step-by-step procedures for disassembling the unit.

TEST MODES

Explains various test modes for diagnostics and calibration.

ADJUSTMENTS

Covers mechanical and electrical adjustments like head azimuth and torque.

CIRCUIT DIAGRAMS

BLOCK DIAGRAMS

High-level overviews of the BD/DRIVER, TUNER, and MAIN sections.

PRINTED WIRING BOARDS

Component layout diagrams for various boards like BD90, MAIN, PANEL, etc.

SCHEMATIC DIAGRAMS

Detailed circuit diagrams for boards like BD90, MAIN, PANEL, HI-AMP, etc.

PARTS LIST & REVISIONS

ELECTRICAL PARTS LIST

Comprehensive list of electrical components, part numbers, and specifications.

REVISION HISTORY

Tracks changes and updates made to the service manual across versions.