Sony cdp c 301 m service manual
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Page 1
SERVICE MANUAL
US Model
GDP-C307M
AEP Model
UK Model
GDP-0307M/0305M
E Model
CDPC305M
Austral/an Model
Signal to noise
ratio
More than 93 dB
Dynamic range
More than 90 dB
Harmonic Less than 0.05% (1 kHz)
distortion
Channel More than 90 dB (1 kHz)
separation
Wow and llutter Below measurable limit
Outputs Output level 2 V (at 50 kilohms)
LINE OUT Load impedance over 10 kilohms
(phono jacks)
HEADPHONES Output level
(stereo phone 0- 10 mW
jack) (variable)
(at 32 ohms)
(not including
proiecting parts
and controls)
(14 x 4% X 15% inches)
ODP-C305M
Photo: CDP-6305M
Model Name Using Similar Mechanism CDP-C500M
Base Unit Name BU<50IBU~5M
SPECIFICATIONS
General
CDP-CGOSM CDP~CGO1 M Power US model:
4 - - - requirements 120 V AC, 60 Hz
System Compact disc digital audio system UK, Australian mo del:
Laser Semiconductor laser 240 V AC, 50/50 Hz
(A = 780 nm) AEP model:
Emission duration: continuous 220 V Ac, 50/60 Hz
Laser output Max. 44.6 pW E model: _
This output is the value measured at a 1 10 ' 12° 0" 22° 240 V AC adlustable,
distance at about 200 mm tvom the objective 50/60 HZ
lens surlace on the Optical Pick-up Block. Power 11 w
Frequency 2 Hz-20 kHz (it: dB) COHSUWPHO"
reslionse Dimensions Approx. 355 x 110 x 385 mm (w/h/d)
Weight
Approx. 5.0 kg (11 lbs)
Supplied accessories
CDP-CSOfiM GDP-0301 M
Audio slgnal 1
connecting cord (phono plug X 2 H phono plug X 2)
AC plug 1
adaptor (for other countries and EC only)
Remote 1
commander
R6 (size AA) 2
batteries
Design and specifications subject to change without notice.
COMPACT
Jlsc PLAYER
ONY.
Page 2
CDP-C301M/C305M
TABLE OF CONTENTS
Section M Page
Specifications .................................. 1
Safety Check-out ............................... 2
1 . SERVICING NOTES
Front Panel Assembly Removing ------------ 3
Notes on Hnandling the Optical Pick-up
Block or Base Unit ....................... 3
Notes on Laser Diode Emission Check ------- 3
Laser Diode and Focus Search
Operation Check .................... . . . . . 3
Notes on the Transit Key ------------------ 3
Protection of Eyes from Laser Beam
during Servicing .......................... 4
2_ GENERAL ............................. 5
3. ELECTRICAL ADJUSTMENTS ~~~~~~~~~~ 6
4. DIAGRAMS
4.], Block Diagram ........................... 8
4-2. Printed Wiring Boards ~~~~~~~~~~~~~~~~~~~~ 11
4-3. Schematic Diagram ---------------------- 15
5. EXPLODED VIEWS ------------------- 19
6. ELECTRICAL PARTS LIST ~~~~~~~~~~~~ 23
MODEL IDENTIFICATION
- Specification Labels -
US model:
CDP-CSOI M
GDP-0305M
SONY®
COMPACT DISC PLAYER
WWW/Z
MODEL NO.
SERIAL No.
MADE IN JAPAN
MADE IN FRANCE
AC 120V~60 HZlOW
AEP model: AC 220 V ~50/60 HZ 10 W
UK model:
E model:
AC 240 V ~50/60 HZ
AC 110 - 120, 220 -- 240 V ~50/60 HZ 10 W
SA FETY-R E LATED 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 PUB-
LISHED BY SONV.
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 microampers). Leakage
current can be measured by any one of three
methods.
I. A commercial leakage tester, such as the
Simpson 229 or RCA WTA54OA. Follow the
manufacturers instructions to use these instru-
ments.
2 A battery-operated AC milliammcter. 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»opcraled 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 a 2V AC range are
suitable. (See Fig. A)
To Exposed Metal
Part: on Set
A C
/ voltmeter
(0. 75 V}
0.15mc Télflktl
L, {
'7 faith Ground
F lg, A. Using an AC voltmeter to check AC leakage
ATTENTION AU\COMPOISANT AVANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES som cmrtoUEs POUR LA sécumré
DE FONCTIONNEMENT. NE REMPLACER css com-
POSANTS OUE PAR DES PIECES SONY DONT LES
NUMénos sour DoNNés DANS CE MANUEL ou
DANs LES SUPPLEMENTS PUBLIES PAR souv.