Sony HCD-EC55 Service Manual

HCD-EC55/EC77/GX99
SERVICE MANUAL
Ver. 1.2 2007.07
• 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.
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)
Sony Corporation
9-887-532-03
Personal Audio Division
2007G16-1
Published by Sony Techno Create Corporation
© 2007.07
Photo : HCD-EC55 (E model)
Model Name Using Similar Mechanism
CD
Base Unit Name
Section
Optical Pick-up Name
TAPE Model Name Using Similar Mechanism
Section Tape Transport Mechanism Type

SPECIFICATIONS

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)
COMPACT DISC DECK RECEIVER
US Model
Canadian Model
HCD-EC55/EC77/GX99
AEP Model
HCD-EC55/EC77
UK Model
HCD-EC55
E Model
Australian Model
HCD-EC55/EC77
NEW
BU-K6BD90-WOD
KSM-213DCP
NEW
CS-21SC-901TP
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
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