Sony CDP 670 Service Manual

Page 1

SERVICE MANUAL

US Model
Canadian Model
AEP Model

SPECIFICATIONS

Frequency response 2Hz-20kHz (10.5dB)
Signal-to-noise ratio More than 100dB

Dynamic range More than 93dB

Harmonic distortion (1 kHz)

Less than 0.008%

More than 95dB (1 kHz)

LINE OUT (phonojacks)
Output level 2V (at 50ki|ohmsl
Load impedance over 10ki|ohms
DIGITAL OUT (OPTICAL)
(optical output connector)

Wave length 660nm

Output level ~18dBm

Channel separation
Outputs

General

Power requirements AEP Model: 220V AC, 50/60Hz

US, Canadian Model:

120V AC, 60Hz

AEP Model: 10W

US, Canadian Model: 12W

Dimensions (approx. including projections)

AEP Model:

430x100x275mm (17x4x10 inches)
US, Canadian Model:

430x95x275 mm (17X3%x10inches)
3.5kg (7 lbs 1202)

Power consumption

Weight (approx.)
Supplied accessories
Audio signal connecting cord (2 phono plugs-2 phono
plugs) (1)

Remote commander (1), Sony SUM-3 (NS) batteries (2)
AC power cord (1)

Design and specifications subject to change without notice.

MICROFILM

TABLE OF CONTENTS

Sect/on Title Page
Specifications .................. 1
Features ..................... 2
Safety Check-out ................ 2
Servicing Note .................. 3

SECTION 14 GENERAL

1-1. Location and Function of Controls. . . 4
1-2. Description on 1C6 (MSC6458) ...... 5
SECTION 2. ADJUSTMENTS ......... 7

SECTION 3. DIAG RAMS

3-1. Semiconductor Lead Layouts ..... 10
3-2. Printed Wiring Boards ......... 1 1
3-3. Schematic Diagram ........... 13
3-4 IC Block Diagrams ........... 16
3-5. Waveforms ............... 17
SECTION 4. EXPLODED VIEWS ....... 18
SECTION 5. ELECTRICAL PARTS LIST. . . 21

summer Disc PLAYER
SONY;

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GDP-670

, _

FEATURES
- Three CUSTOM EDIT functions, convenient for tape
editing
- PROGRAM EDIT function for confirming the total
playing time while choosing the selection to be
programmed.

- TIME EDIT function for programming selections
automatically to fit in a desired durationr

- TIME FADE function for stopping the play, fading out
at the desired time.

- FADE-lN/FADEOUT function for fading in or out the
play when starting or stopping.

' SHUFFLE play for playing the selections in a random
order.

- REPEAT function for a single selection, the whole disc,
PROGRAM play. or SHUFFLE play.

- Easy-to-read display window shows the selection
number being played, all the numbers of the selections
on the disc (up to 16). the elapsed playing time, and the
remaining time.

SAFETV~RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A 0R 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.

ATTENTION AU COMPQSANT AVANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES coM-
POSANTS QUE PAR DES PIECES souv DONT LEs
NUMEROS SONT DONNES DANS CE MANUEL 0U
DANS LEs SUPPLEMENTS PUBLiEs PAR souv.

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-S40A. Follow the
manufacturers instructions to use these instru-
ments. 4

to

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

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
SIT-63TH! are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are
suitable. (See Fig. A)

To Exposed Metal
Parts on Set

AC
0,15MF gum / voltmeter
(0.75Vl

"7 Earth Ground

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