Sony excd 306 service manual

Page 1

EXCD-306

US Model

SERVICE MANUAL

SPECIFICATIONS Model Name Using Similar Mechanlsm CDX-2160/EXCD206
CD Drive Mechanism Type MG-333X-121
AUDIO POWER SPECIFICATIONS
POWHI OUTPUTAND TorrAL HARMONIC DISTORTION 09 P'ck p Name KSS 520A
12 watts per channel mmimum continuous average power Into 4 ohms, 4
channels driven from 20 H110 20 kHz with no more than 1 % total harmomc
dismon.
CD player section m
System Compact disc digltal audio Tumng range 530 - 1,710 kHz
system Antenna temunu] External antenna connector
Slgnnl-to-norse ram 90 dB Inlermedme frequency 450 kHz
Frequency response 10 - 20,000 Hz Frequency Sensluvny 32 IN
Wow and flutter Below measurable Ilmll
Laser Diode Drown Power amplifier section
5 Gm Outputs Speaker outputs
Wavelength 730 nm (we I mmm)
Emission Duane" Connnuuus Speaker impedance 4 _ 8 ohms
Law 1" PW Le than 44 5 W Mnxunum power output 35 w x 4 (at 4 ohms)
* This oulpu! is the value measured a: a distant: of200
mm fram the objective [ms surface on the Opucal Pmk- .
up Black - Contlnued on next page -
Tuner section
FM
'luningrmge B7 5-1079Ml-lz
Antenna terminal External antenna connector
Inlemtedlale frequency 10 7 MHz
Usable sensmvrty 13 mi
Selectlvlty 70 dB at 400 kHz
Signal-to-nmse "no 65 dB (stereo).
68 dB (menu)
Harmonic distumon at 1 kHz
0 5% (stereo),
0 3% (mono)
Separauon 33 dB at l kHz
Frequency response 30 - 15,000 Hz
Capture rum 2 dB

FM/AM COMPACT DISC PLAYER

SONY;

II Illlllii" Ili I'IIII
I III! IIII
I III III I
III IIIIII III

992553I411

Page 2

General
Outputs Line output (2)
Powa antenna relay control]
Power amplifier control
lead
Tone controls Bass :10 dB at 100 Hz
Treble :10 dB at 10 kHz
Pawn requirements 12 V DC car battery
(negative ground)
Dimensions Approx 188 x 58 x 180 mm

(71flX23/8X7l/8m)
(w/h/d)
Approx 183 x 53 X 163 min
(71/4x21/sx6mm)
(w/h/d)
Mass Approx 13kg(2lbl4oz)
Supplied accessories Parts for installation and
connections (1 set)
Front panel case (1)

Mounting dimension

Design and specifications are sub/art to change Without
nalice

SERVICE NOTE

CAUTION

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

Notes on Chip Component Replacement

- Never reuse a disconnected chip component

0 Notice that the minus side of a tantalum capacitor may be dam»
aged by heat

NOTES ON HANDLINGTHE 0P11CAL PICK-UP BLOCK 0R
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, observe
from more than 30 cm away from the objective lens.

NOTES ON PICK-UP FLEXIBLE BOARD

The pick-up flextble board in this set is secured to the optical pick-up
Will! an adhesive tape. Once the tape is removed, an adhering force
becomes weak, and it cannot be reused

Therefore, if the optical pick-up is replaced, replace also the pick-up
flexible board with a new one.

NOTES ON CLEANING THE OBJECTIVE LENS

cotton swabs
objective lens

Z-axls actuator

optical plck-up

2-aXIs cover
sllda base

Apply CD lens cleaner BA (Part No :1-2501 -000-A) to cotton swabs
(narrow type) (Part No.:J»2501»023-A) to be lightly wet. Use a force
(about 5 g (0.18 oz)) to make the objective lens in contact with the
bottom lightly, and clean the lens by spirals as following below.

Replace the cotton swab and repeat this cleaning two or three times

surface of objective lens

Notes:

Do not force to push the objective lens. Otherwise, the plate spring
supporting the objective lens Will be bent, causing a deteriorated RF
waveform.

Never touch anything other than the objective lens. Otherwise, a
significant deterioration occurs in the RF waveform

SAFETY-RELATED COMPONENT WARNINGI!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED LINE
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS LIST ARE CRITICAL T0 SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.