Sony HCD-EC68P Service Manual

HCD-EC68P/EC78P
SERVICE MANUAL
Ver. 1.0 2008.03
• HCD-EC68P is the amplifi er, CD player and
tuner section in MHC-EC68Pi.
• HCD-EC78P is the amplifi er, CD player and
tuner section in MHC-EC78Pi.
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(HCD-EC78P 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-EC68P The United States model only)
With 6 ohm loads, both channels driven, from 120 – 10,000 Hz;
40 watts per channel minimum RMS power, with no more than
0.7% total harmonic distortion from 250 milliwatts to rated output.
section
HCD-EC78P: US and Canadian models
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)
HCD-EC78P: UK model
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-EC68P
RMS output power (reference):
70 W + 70 W (per channel at 6 Ω, 1 kHz, 10% THD)
Sony Corporation
9-889-053-01
2008C05-1 Audio Business Group
©
2008.03 Published by Sony Techno Create Corporation
Photo : HCD-EC78P
Model Name Using Similar Mechanism
Mechanism Type
Base Unit Name
Optical Pick-up Block Name

SPECIFICATIONS

Inputs
AUDIO IN (stereo mini jack):
Sensitivity 800 mV, impedance 22 kilohms
Outputs
PHONES (stereo mini jack):
Accepts headphones with an impedance of 8 Ω or more
SPEAKER: impedance
HCD-EC78P: 8 Ω
HCD-EC68P: 6 Ω
CD player section
System: Compact disc and digital audio system
λ
Laser: Semiconductor laser ( =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
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)
UK and Australian models: 87.5 – 108.0 MHz (50 kHz step)
Intermediate frequency: 10.7 MHz
AM tuner section:
Tuning range
North American model:
530 – 1,710 kHz (with 10 kHz tuning interval)
531 – 1,710 kHz (with 9 kHz tuning interval)
Australian model:
531 – 1,710 kHz (with 9 kHz tuning interval)
530 – 1,710 kHz (with 10 kHz tuning interval)
Intermediate frequency: 450 kHz
UK model:
531 – 1,602 kHz (with 9 kHz tuning interval)
Intermediate frequency: 450 kHz
HCD-EC68P/EC78P
Canadian Model
Australian Model
CDM77B-K6BD90-WOD NEW
CDM88A-K6BD90-WOD HCD-EC68
Except EC78P (UK) CDM77B-K6BD90-WOD
EC78P (UK) CDM88A-K6BD90-WOD
BU-K6BD90-WOD
KSM-213DCP
General
Power requirements:
North American model: AC 120 V, 60 Hz
Australian model: AC 230 – 240 V, 50/60 Hz
UK model: AC 230 V, 50/60 Hz
Power consumption:
HCD-EC78P
USA model: 210 W
Canadian model: 270 VA
UK model: 160 W
0.5 W (in Power Saving Mode)
HCD-EC68P
110 W
Dimensions (w/h/d) (excl. speakers):
Approx. 200 × 306 × 415 mm
Mass (excl. speakers):
HCD-EC78P: US and Canadian models
Approx. 5.8 kg
HCD-EC78P: UK model
Approx. 6.1 kg
HCD-EC68P
Approx. 4.7 kg
COMPACT DISC RECEIVER
US Model
UK Model
HCD-EC78P
HCD-EC68P