Sony cdx l 280 service manual

Page 1

CDX-L280

SERVICE MANUAL

Ver 1.0 2002. 11

AEP Model
UK Model

Model Name Using Similar Mechanism NEW
MG-393XC-121//K

CD Drive Mechanism Type

Optical Pick-up Name KSS-721A
SPECIFICATIONS
CD player section General
Signal7to7noise ratio 90 dB Oiiipiiis Audio outputs (rear)

Frequency response
Wow and flutter

10 , 20,000 Hz
Below measurable Ilmtl

Tuner section
FM
Tuning range 87.5 7 108 MHz
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz
Usable sensitivity 11 mar
Selectiy-ity 75 dB at 400 kHz
Signal7to7noise ratio 65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo).
0.5% (mono)

Separation 33 dB ai 1 kHz
Frequency response 30 7 150001-12
AM

Tuning range 31 7 1.602 kHz

Aerial terminal External aerial connector
intermediate frequency 10.7 MHz/450 kHz
Sensinvlly 30 av

Power amplilier section
Outputs Speaker outputs

(sure seal connectors)
speaker impedance 4 7 8 ohms
Maximum power output 45 W x 4 (at 4 ohms)

9-874-228-01 Sony Corporation
2002K0400-1 e Vehicle Company
© 2002. 11 Published by Sony Engineering Corporation

Power amplifier control terminal
Power aerial relay control terminal
Bass :9 dB at 100 1-12

Treble :9 dB at 10 kHz

12 V DC car battery

(negattve ground)

Tone commls

Power requirements

Dimensions Approx. 178 X 50 X 176 mm
(w/h/d)

Mounting dimensions Approx. 182 X 53 X [61 mm
(W/Il/CI)

Mass Approx. 12 kg

Pans for installation and
connections (1 set)
Front panel case (1)

Supplied accessories

Note
This utiit cannot be connected to a digital
preamplifier or an equalizer.

Design and ,Y]?lL't_/ILLIIII)II,Y m2» tub/ml It) tlmngt: wit/mm
mm} a,

FM/AM COMPACT DISC PLAYER
S ONY;

Page 2

CDX-L280

SERVICE NOTES

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

The laser diode in the optical pick»up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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 block. Therefore, when checking the laser diode emission, ob
serve from more than 30 cm away from the objective lens.

Notes on Chip Component Replacement

I Never reuse a disconnected chip component

0 Notice that the minus side of a tantalum capacitor may be damA
aged by heat.

SAFETY~RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINE
WITH MARK A 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.

2

CLASS 1

LASER PRODUCT

This label is located on the bottom of the
Chas. is.

CAUTION-INVISIBLE LASER RADIATION WHEN OPEN
DO NOT STARE INTO BEAM 0R

VIEW DIRECTLY WITH OPTICAL INSTRUMENTS

This label is located on the drive unit's internal
chassis.

When replacing the chassis (T) of mechanism deck which have
the CAUTION LABEL" attached, please be sure to put a new
CAUTION LABEL (3223-98-11) to the cha 'is (T).