Sony Walkman D-EJ925 Service Manual

D-E888/E999/EJ825/EJ925
SERVICE MANUAL
Ver 1.0 2000. 10
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
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.)
D-A conversion
1-bit quartz time-axis control
Frequency response
+1
20 - 20 000 Hz dB (measured by EIAJ CP-
–2
307)
Output (at 4.5 V input level)
Line output (stereo minijack)
Output level 0.7 V rms at 47 kΩ
Recommended load impedance over 10 kΩ
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16 Ω
(Approx. 0.5 mW + Approx. 0.5 mW at 16 Ω)*
*For the customers in France
Optical digital output (optical output connector)
Output level: –21 - –15 dBm
Wavelength: 630 - 690 nm at peak level
Power requirements
For the area code of the model you
purchased, check the upper left side of the
bar code on the package.
• Two Sony NC-6WM rechargeable batteries:
2.4 V DC
• Two Sony NH-14WM rechargeable batteries:
2.4 V DC
• Two LR6 (size AA) batteries: 3 V DC
Photo: D-E999
Model Name Using Similar Mechanism NEW
CD Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
• AC power adaptor (DC IN 4.5 V jack):
US/Canadian model: 120 V, 60 Hz
AEP/E13 model: 220 - 230 V, 50/60 Hz
UK model: 230 - 240 V, 50 Hz
Tourist model: 100 - 240 V, 50/60 Hz
Hong Kong model: 220 V, 50/60 Hz
Chinese model: 220 V, 50 Hz
Korean model: 220 V, 60Hz
• Sony DCC-E84 car battery cord for use on
car battery: 4.5 V DC
Battery life* (approx. hours)
(When you use the CD player on a flat and stable
surface.)
Playing time varies depending on how the CD
player is used.
When using G-PROTECTION
"1"
Two NC-6WM 15
(charged for
about 4 hours**)
Two NC-14WM 29
(charged for
about 4 hours**)
External battery case 50
(two alkaline batteries)
Rechargeable batteries 65
NC-6WM and external
battery case (two alkaline
batteries)
Rechargeable batteries 80
NH-14WM and external
battery case (two alkaline
batteries)
* Measured value by the standard of EIAJ
(Electronic Industries Association of Japan).
** Charging time varies depending on how the
rechargeable battery is used.
Canadian Model
Chinese Model
Tourist Model
Operating temperature
5°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding
projecting parts and controls)
127.2 × 18.4 × 135.6 mm
Approx.
× × 5
1 3 3
(5 ⁄ ⁄ ⁄ in.) (D-E888/EJ825)
8 4 8
Approx. 127.2 × 15.4 × 135.6 mm
× × 5
1 5 3
(5 ⁄ ⁄ ⁄ in.) (D-E999/EJ925)
8 8 8
Mass (excluding accessories)
Approx. 175 g (6.2 oz) (D-E888/EJ825)
Approx. 155 g (5.5 oz) (D-E999/EJ925)
AC power adaptor (1)
Headphones/earphones with remote control (1)
Rechargeable batteries (2)
Battery carrying case (2)
Carrying case (1)
"2" External battery case (1)
AC plug adaptor (1)*
14
* Supplied with Tourist model.
On AC power adaptor
28
• Use only the AC power adaptor supplied or
recommended in "Accessories (supplied/
optional)." Do not use any other AC power
48 adaptor. It may cause a malfunction.
Polarity of the plug
61
76
Design and specifications are subject to change
without notice.
PORTABLE CD PLAYER
US Model
AEP Model
UK Model
E Model
D-EJ825/EJ925
D-E888/E999
CDM-3021EBG
DAX-21EG