SONY D E440 X Service Manual
D-E451/E455/E456CK/E459CK
SERVICE MANUAL
Ver 1.0 1999.06
Photo : D-E451
SPECIFICATIONS
CD player
System
Compact disc digital audio system
Laser diode properties
Material: GaAIAs
Wavelength : λ= 780 nm
Emission duration: Continuous
Laser output : Less than 44.6 µW (This output
is the value measured at a distance of 200 mm
from the objective lens surface on the optical
pick-up block with 7 mm aperture. )
Error correction
Sony Super Strategy Cross Interleave Reed
Solomon Code
D-A conversion
1-bit quartz time-axis control
Frequency response
20 - 20,000 Hz+1 dB (measured by EIAJ CP-
307)
Output (at 4.5 V input level)
Headphones (stereo minijack)
15 mW + 15 mW at 16 ohms
Line output (stereo minijack)
Output level 0.7 V rms at 47 kilohms
Recommended load impedance over 10
kilohms
-2
General
Power requirements
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
• Sony BP-DM10 Rechargeable battery:
2.4 V DC, Ni-Cd, 650 mAh
Sony BP-DM20 Rechargeable battery:
2.4 V DC, Ni-MH, 1,200 mAh
• Two LR6 (size AA) batteries: 3 V DC
• AC power adaptor (DC IN 4.5 V jack):
US model: 120 V, 60 Hz
• Sony DCC-E245 car battery cord for use on
car battery : 4.5V DC
Dimensions (w/h/d) (without projecting parts and
controls)
Approx. 129 x 28 x 146 mm
( 51/8 x 11/8 x 53/4 in.)
Mass (without rechargeable battery)
Approx. 220 g (7.8 oz)
Operating temperature
5°C - 35°C (41°F - 95°F)
US Model
Model Name Using Similar Mechanism D-E441
CD Mechanism Type CDM-2811EAA
Optical Pick-up Type DAX-11E
Supplied accessories
For the area code of the model you purchased,
check the upper left side of the bar code on the
package.
D-E451
AC power adaptor (1)
Headphones (1)
D-E455
AC power adaptor (1)
Headphones with remote control (1)
Rechargeable battery (1)
D-E456CK
AC power adaptor (1)
Headphones (1)
Car battery cord (1)
Car connecting pack (1)
Velcro tape (2)
Spare fuse (1)
Spiral tube (1)
D-E459CK
AC power adaptor (1)
Rechargeable battery (1)
Headphones with remote control (1)
Car battery cord (1)
Car connecting pack (1)
Velcro tape (2)
Spare fuse (1)
Spiral tube (1)
MICROFILM
Design and specifications are subject to
change without notice.
COMPACT DISC COMPACT PLAYER
6-4. SCHEMATIC DIAGRAM
r
Refer to page 24 for Waveforms.
r
Refer to page 25 for IC Block Diagrams.
D-E451/E455/E456CK/E459CK
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
¢
•
Note: The components identified by mark ! or dotted
• U : B+ Line.
• H : adjustment for repair.
• Power v oltage is dc 4.5 V and f ed with regulated dc power
• Voltages and waveforms are dc with respect to ground
• Voltages and current are tak en with a V OM (Input imped-
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
: internal component.
line with mark ! are critical for safety.
Replace only with part number specified.
supply from external power voltage jack. (J401)
under no-signal conditions.
ance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
Voltage variations may be noted due to normal production tolerances.
J : CD
4
W or less unless otherwise
– 19 – – 20 – – 22 –– 21 – – 23 –
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