Sony HCD-C770 Service Manual

SERVICE MANUAL

Ver 1.6 2004.09
HCD-C770/C990 is the amplifier, DVD/CD
player and tuner section in DAV-C770/C990.
Sony Corporation
9-874-059-07
2004I05-1 Audio Group
© 2004.09 Published by Sony Engineering Corporation
HCD-C770/C990
Photo: HCD-C770
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (C770: US model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 3 ohm loads, both channels driven, from 150 – 10,000 Hz; rated
70 watts per channel minimum RMS power, with no more than 1 %
total harmonic distortion from 250 milliwatts to rated output.
AUDIO POWER SPECIFICATIONS (C990: US model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 3 ohm loads, both channels driven, from 150 – 10,000 Hz; rated
75 watts per channel minimum RMS power, with no more than 1 %
total harmonic distortion from 250 milliwatts to rated output.
Amplifier section
Stereo mode (C770) 90 W + 90 W (3 ohms at 1 kHz, THD 10 %)
Stereo mode (C990) 100 W + 100 W (3 ohms at 1 kHz, THD 10 %)
Surround mode (C770) Front: 90 W + 90 W
Center*: 90 W
Rear*: 90 W + 90 W (3 ohms at 1 kHz, THD 10 %)
Subwoofer*: 100 W (3 ohms at 100 Hz, THD 10 %)
Surround mode (C990) Front: 100 W + 100 W
Center*: 100 W
Rear*: 100 W + 100 W (3 ohms at 1 kHz, THD 10 %)
Subwoofer*: 100 W (3 ohms at 100 Hz, THD 10 %)
* Depending on the sound field settings and the source, there may be no sound output.
Inputs (Analog) VIDEO 1, 2:
Sensitivity: 150 mV
Impedance: 50 kilohms
Inputs (Digital) VIDEO 2 (optical):
Sensitivity: –
Outputs (Analog) VIDEO 1 (AUDIO OUT):
Voltage: 2 V
Impedance: 1 kilohms
PHONES:
Accepts low- and high-impedance headphones
Model Name Using Similar Mechanism
Mechanism Type
Base Unit Name
Optical Traverse Unit Name
– Continued on next page –
SACD/DVD RECEIVER
US Model
Canadian Model
HCD-C770/C990
AEP Model
Australian Model
HCD-C770
NEW
CDM69-DVBU16
DVBU16
DBU-1