Sony cdp h 300 service manual

Page 1

SERVICE MANUAL

This set is the CD player section
in MHc-2500/3500/FH-E6266D.

US Model
Canadian Model
AEP Model

UK Model

E Model

SPECIFICATIONS

System Compact disc digital audio
system
Laser Semiconductor laser
(A - 780 nm)
Emission duration: continuous
Laser output Maxi 4446 uW*

* This output is the value
measured at distance of
about 200 mm from the
objective lens suriace on
the Optical Pick-up Block.

Frequency response

5 Hz - 20 kHz (+0.51-2.0 dB)
Signal to noise ratio More than 90 dB
Dynamic range More than 90 dB
Harmonic distortion Less than 0.05% (at 1 kHz)
Channel separation More than 90 dB

Output level 2 V (at 50 kilohms)

Load impedance Over 10 kilohms
Dimensions Approx 225 x 65 x 225 mm
(w/hld)

(9 x 213 x 9 inches)
Weight Approx 2 kg (4 lb 6 oz)

Power requirement 120V 60Hz

Power consumption 10W }Canadian Model

Model Name Using Similar Mechanism HCD-H7/H1500

CD Transport Mechanism Type CDM13A-5BD3

Optical Pick-Up Block Type BU-SBD3

SAFETY-RELATED COMPONENT WAR N ING! I

COMPONENTS IDENTIFIED BV MARK & 0H 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 PUB-
LISHED BY SONY

ATTENTION Au COMPQSANT AVANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE MARQUE A
sun LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES som carnauEs POUR LA sécumré
DE FONCTIONNEMENT. NE REMPLACER ces com-
POSANTS ous PAR DES PIECES souv DONT LES
NUMEROS SONT DONNES DANS cs MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR sonv.

COMPACT DISC PLAYER

SONYE

Page 2

CDP-H300

SAFETY CH ECK-OUT

After correcting the original service problem,
perform the following safety check before releasing
the set to the customer:

Check the antenna terminals, metal trim, metallized
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.

LEAKAGE TEST

The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis. must
not exceed 0.5 mA (500 microampersl. Leakage
current can be measured by any one of three
methods.

1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-S40A. Follow the
manufacturers' instructions to use these instru-

ments.

u

A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.

3 Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The limit" indication is 0.75V. so
analog meters must have an accurate low
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are
suitable. (See Fig, A)

To Exposed Metal
Parts on Set

A C
voltmerer
I0. 75 VI

0.75uF EELS)
'_..J

'=:' E 3th Ground

Fig, A. Using an AC voltmeter to cheek AC leakage.

on ,..-._.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-._.-.-,_.-.-.-._.-.-.-,-.-.-.-._.-.-...-.-.-.-.-.-.-.-.-.-.-.-.-.-.-..

SERVICING NOTE

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 poten-
tial 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.

CAUTION

Use of controls or adjustments or performance
of procedures other than those specified herein
may result in hazardous radiation exposure.

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 check-
ing the laser diode emission, observe from more than 30
cm away from the objective lens.