Sony hcd a 290 k service manual

Page 2

Compact disc player
Laser

Wavelength
Frequency response
Signal-to-noise ratio
Dynamic range
Harmonic distortion
Channel separation

General
Power requirements

Power consumption

Mass
Dimensions

Supplied accessories

Semiconductor laser
780-790nm

2H2 to 20kHz:0.5dB
More than 93dB

More than 90dB

Less than 0.008% (1kHz)
More than 90dB (IkHz)

110-120V/220-240V AC, adjustable
with the voltage selector, 50/60Hz
105W
Approx. 8.2kg
Approx. 355 X 380 X 325mm

(w/h/d, including projections)

Remote commander RM-SZZl (1)

FM wire antenna (1)
AM loop antenna (1)
Batteries Sony SUM-3 (NS) (2)
Microphone (1)

Design and specifications are subject to change Without notice.

0 Abbreviations

EA: Saudi Arabia model
SP 2- Singapore model

MY: Malaysia model

CAUTION

Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK & OR DOTTED LINE WITH
MARK & ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST
ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN
THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

This appliance is classified as a CLASS] LASER product The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.

CMSS 1 USER PRODUCT
LUOKAN 1 LASERLAlTE

KLASS 1 LASERAPPARAT

Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.

The following caution label is located inside of the unit.

~ INVISIBLE lASER MDImoN was»: open,
CAUTION ' AVOID Exposes: To BEAM.

w x: a 7m in o ABNVNG ma
ADVARSEL simiznsossfsaivushsssdsuos AF :ummon
MM ETTEASE sou smums

VARO] ; AVATIAESSA A WUKITUS our-reruns:
DLEY ALTTIW usensnsiuus
VARNING

: us sosrmmo ma osnm as). An open»:
ocu spinner: An uaxowa D

uswuo LASERSTHALING "A: DEKSEL Amss
ADVARSEL' UNNGA sxsnonenms son STEAL

Dolby noise reduction manufactured under license from Dolby Labora»
tories Licensing Corporation.
"DOLBY" and the double-D symbol DU are trademarks of Dolby Labora»
tories Licensing Corporation.

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer
electrostatic break-down because of the potential difference
generated by the charged electrostatic load, etc. on clothing
and the human body

During repair, pay attention to electrostatic break-down and
also use the procedure in the printed matter which is included
in the repair parts.

The flexible board is easily damaged and should be handled
with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be
focused on the disc reflective surface by the objective lens in
the optical pick-up blocki Therefore, when checking the laser
diode emission, observe from more than 30 cm away from the
objective lens.

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