Sony cdp c 312 m service manual

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SERVICE MANUAL U5 Model

Canadian Model
AEP Model
Austral/an Model
E Model

Model Name Using Similar Mechanism CDP-CBllM/C313M/C315M
CD Mechanism Type CDM16H2-SBD3
Optical Pick-Up Block Type BU-SBDB
SPECIFICATIONS
System Compact disc digital audio system General
Laser Semiconductor laser Power US, Canadian model: 120 V AC, 60 Hz
(A = 780 "ml . 4 re uirements Australian model: 240 V AC, 50/60 Hz
Emission duration: continuous q AEp model: 220_230 V AC, 50/50 Hz
Laser output Max. 44.6 pW E model: 110-120 or 220-240V AC
' This output is the value measured at a distance adjustable, 50/60Hz
oi about 200 mm irom the objective lens surlace Power 12 W
on the Optical Pick-up Blockt consumption
Frequency 2 Hz - 20 kHz (:05 (8) Dimensions Approx. 355 X 120 X 385 mm (w/hld)
response (not including (14 X 43/4 X 15% inches)
Signal to noise More than 100 dB projecting parts
ratio and controls)
Dynamic range More than 98 dB Weight Approx 4.9 kg (10 lbs 13 oz)
Harmonic Less than 0.005% (1 kHz)
distonion
Channel More than 100 dB (1 kHz) Supplied accessories
separation Audio signal 1
Wow and flutter Below measurable limit connecting cord (phono plug x 2 H phono plug X 2)
Outputs Output level 2 V (at 50 kilohms)
LINE OPT Load impedance over 0 '0th Design and specifications subject to change without
(phono tacks) notice

COMPACT Disc PLAYER
S ONE

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CDP-C312M

For the European countries

CLASS I LASER PRODUCT
LUOKAN I LASERLAITE

KLASS 1 LASERAPF'ARAT

This Compact Disc player is
classified as a CLASS 1
LASER product.

The CLASS 1 LASER
PRODUCT label is located
on the rear exterior.

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 di-
ference generated by the charged electrostatic load.
etc. on clothing and the human body.

During repair, pay attention to electrostatic break
dovm 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 objec-
tive lens in the optical pick-up block. Therefore, when
checking the laser diode emission, observe from more
than 30cm away from the objective lens.

MODEL IDENTIFICATION
-Model Number Label-

SONY. MODEL No. cDPcaizM

COMPACT DISC PLAYER

WWW

US, CND model: AC: 120V 60HZ 12W

AEP model: AC: 220-230V~50/60Hz

AUS model: AC: 240V~50/60Hz

E model: AC: 110-120, 220-240V~50/60HZ 12W

OCND: Canadian model
0AUS: Australian model

SAFETY-RELATED COMPONENT WARNINGII

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 PUB-
LISHED BY SONY.

SAFETY CHECK-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 microampers). Leakage
current can be measured by any one of three
methods.

I. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers instructions to use these instru-
ments.

to

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 0.75 V. 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 3 2V AC range are
suitable. (See Fig. A)

To Exposed Metal
Part: on Set

A C
/ voltmeter

[ r
0.15% I gm :2 (0.75w

:L Earth Ground

F lg. A. Using an AC voltmeter to check AC leakage.

ATTENTION AU COMPQSANT AYANT RAPPORT
A LA secumrer

LES CDMPOSANTS IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES sour cmrrouEs POUR LA sécumré
DE FONCTIONNEMENT. NE REMPLACER css com-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS sour DONNES DANS cs MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR SONY.

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