9-873-293-01
2001I0200-1
© 2001.9
Sony Corporation
Personal Audio Company
Shinagawa Tec Service Manual Production Group
SERVICE MANUAL
FM/AM PORTABLE CD PLAYER
E Model
Chinese Model
Model Name Using Similar Mechanism
D-EJ725
CD Mechanism Type
CDM-3123EBA
Optical Pick-up Type
DAX-23E
SPECIFICATIONS
D-FJ737
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength:
λ
= 780 nm
Emission duration: Continuous
Laser output: Less than 44.6
µ
W
(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.)
D-A conversion
1-bit quartz time-axis control
dB (measured by JEITA CP-307)
Output level 0.7 V rms at 47 k
Ω
Recommended load impedance over 10 k
Ω
Approx. 5 mW + Approx. 5 mW at 16
Ω
Optical digital output (optical output
connector)
Output level: –21 - –15 dBm
Wavelength: 630 - 690 nm at peak level
Frequency range (tuner-remotecontrol)
FM: 87.5 - 108.0 MHz
AM: 531 - 1 602 kHz
Power requirements
For the area code of the model you
purchased, check the upper left side of the
bar code on the package.
CD player:
• Two Sony NC-WMAA rechargeable
batteries: 2.4 V DC
• Sony NH-WM2AA rechargeable batteries:
2.4 V DC
• Two LR6 (size AA) batteries: 3 V DC
• AC power adaptor (DC IN 4.5 V jack):
E13 model:
220 - 230 V, 50/60 Hz
Korean model: 100 - 240 V, 50/60 Hz
Hong Kong model: 220 V, 50/60 Hz
Chinese model: 220 V, 50 Hz
Tuner-remote control (when used separately):
• One R03 (size AAA) battery: 1.5 V DC
– Continued on page 2 –
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