Sony HCD-L7HD Service Manual

SERVICE MANUAL
Ver 1.2 2003. 12
This set is the tuner, CD, HD and amplifier
section in CMT-L7HD.
Amplifier section
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
With 4-ohm loads, both channels driven, from
120 - 10,000 Hz; rated 25 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
North American model:
Continuous RMS power output (reference):
25 + 25 W
(4 ohms at 1 kHz, 10%
THD)
European model:
DIN power output (rated): 20 + 20 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
25 + 25 W
(4 ohms at 1 kHz, 10%
THD)
Music power output (reference):
25 + 25 W
Other models:
The following measured at 220 V AC, 60 Hz
DIN power output (rated): 20 + 20 W
(4 ohms at 1 kHz, DIN,
110 V - 240 V AC)
Continuous RMS power output (reference):
25 + 25 W
(4 ohms at 1 kHz, 10%
THD, 110 V - 240 V AC)
Inputs
MD/TAPE IN (stereo minijack):
Sensitivity 450 mV (MD)/
250 mV (Tape),
impedance 47 kilohms
Sony Corporation
9-874-073-03
2003L16-1 Home Audio Company
© 2003.12 Published by Sony Engineering Corporation
HCD-L7HD
Model Name Using Similar Mechanism
CD
CD Mechanism Type
SECTION
Base Unit Type
SPECIFICATIONS
DIGITAL OPTICAL IN (Supported sampling
frequencies: 32 kHz, 44.1 kHz and 48 kHz)
Outputs
MD/TAPE OUT (stereo minijack):
Sensitivity 250 mV,
impedance 1 kilohmes
PHONES (stereo minijack):
Accepts headphones with
an impedance of 8 ohms
or more
DIGITAL CD OPTICAL OUT (Supported sampling
frequency: 44.1 kHz)
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ = 795 nm)
Emission
duration: continuous
Frequency response 2 Hz – 20 kHz
HD recorder section
Capacity 20 GB
Recording system ATRAC 3
Transfer rate 132 kbps
Maximum recording time About 300 h
Maximum number of albums
Library area: 250
Flexible area: 250
Maximum number of tracks
20,000
Maximum number of tracks per album
400
Maximum CD-HD ripping speed
Max. ×2
MICRO Hi-Fi COMPONENT SYSTEM
US Model
Canadian Model
AEP Model
UK Model
NEW
CDM71B
BU-31BD63
Tuner section
FM stereo, FM/AM superheterodyne tuner
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)
Antenna FM wire antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
North American model: 530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 - 1,710 kHz
(with the tuning interval
set at 9 kHz)
European model: 531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models: 530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz
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