Sony HCD-EH25 Service Manual

SERVICE MANUAL
Ver. 1.0 2008.05
• HCD-EH25 is the amplifi er, USB, CD player,
tape deck and tuner section in CMT-EH25.
• HCD-EH26 is the amplifi er, USB, CD player,
tape deck and tuner section in CMT-EH26.
• "WALKMAN" and "WALKMAN" logo are registered
trademarks of Sony Corporation.
• MPEG Layer-3 audio coding technology and patents
licensed from Fraunhofer IIS and Thomson.
Amplifier section
European and Russian models:
DIN power output (rated):
4 + 4 watts (4 ohms at 1 kHz, DIN)
Continuous RMS power output
(reference): 5 + 5 watts (4 ohms at
1 kHz, 10% THD)
Music power output (reference):
7 + 7 watts (4 ohms at 1 kHz, 10%
THD)
Other models:
DIN power output (rated):
4 + 4 watts (4 ohms at 1 kHz, DIN)
Continuous RMS power output
(reference): 5 + 5 watts (4 ohms at
1 kHz, 10% THD)
Inputs:
AUDIO IN (stereo mini jack):
voltage 800 mV, impedance
47 kilohms
(USB) port: Type A, maximum
current 500 mA
Outputs:
PHONES (stereo mini jack): accepts
headphones of 8 ohms or more
SPEAKER: accepts impedance of
4 ohms
Sony Corporation
9-889-152-01
2008E05-1 Audio Business Group
©
2008.05 Published by Sony Techno Create Corporation
HCD-EH25/EH26
Photo: HCD-EH26
CD
Section
TAPE
Section
SPECIFICATIONS
USB section
Supported bit rate
MP3 (MPEG 1 Audio Layer-3):
32 – 320kbps, VBR
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3):
32/44.1/48 kHz
CD player section
System: Compact disc and digital audio
system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6µW
* This output is the value measurement
at a distance of 200mm from the
objective lens surface on the Optical
Pick-up Block with 7mm aperture.
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 90 dB
Tape deck section
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
Model Name Using Similar Mechanism
Base Unit Name
Optical Pick-up Name
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
FM tuner section:
Tuning range:
87.5 − 108.0 MHz (50 kHz step)
Antenna: FM lead antenna
Intermediate frequency: 10.7 MHz
AM tuner section:
Tuning range
Korean model:
531 − 1,602 kHz (with 9 kHz tuning
interval)
530 − 1,610 kHz (with 10 kHz tuning
interval)
Other models:
531 − 1,602 kHz (9 kHz step)
Antenna: AM loop antenna
Intermediate frequency: 450 kHz
General
Power requirements
Korean model: 220 V AC, 60 Hz
Other models: 230 V AC, 50/60 Hz
Power consumption: 27 watts
Dimensions (w/h/d) (excl. speakers):
Approx. 155 × 241 × 224.6 mm
Mass (excl. speakers): Approx. 2.2 kg
Design and specifications are subject to
change without notice.
COMPACT DISC DECK RECEIVER
AEP Model
HCD-EH25/EH26
UK Model
Russian Model
Korean Model
HCD-EH25
NEW
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