Sony cfd 454 service manual

Page 1

SERVICE MANUAL

US Model

CFD- 454
CFD- 455
Canadian Model
CPD-454
PHOTO: CFD-455
SPECIFICATIONS CD Section CFD-GO

US Model:

With 3.2-ohm loads, both channels
driven from 150-10900 Hz: rated 4W, per
channel minimum RMS power, with no
more than 10% total harmonic distortion
in AC operation.

on player section
System Compacl disc digital audio system
Laser diode properties Material: GaAlAs
Wavelength: 780nm
Ernlssion duration: Continuous
Laser output power: less than 44.6;4W'
'This output is the value measured at a distance
of 200 mm from the obiective lens surlace on the
optical puck-up block.

Spindle speed 12 cm CD: Approx. 200 rpm. lo 500 rpm. (CLV)
6 cm CD: Approx. 300 to 500 r.p.m (CLV)
Error correction Sony Super Strategy Cross lnterleave Read

Solomon Code
Number of channels 2
Frequency response 20-20 000 Hz: -2 08
Wow and flutter Below measurable limit

FladIo section

Frequency range FM: 57.6-108 MHz
AM: 530-1 .710 kHz
Antennas FM: Telescopic antenna

AM: BuiltAin lernte bar antenna

Tape recorder sectlon and general

Recording system 4-track 2~channel stereo

Fast winding time Approx. 2 min. with Sony cassette 060
Frequency response With TYPE I (NORMAL) cassette: 80-10300 Hz

Model Name Using
Similar Mechanism

Tape Section CPD-60

Optical Device Name KSM-ZIOBAN
Tape Transport Mechanism Type MF-455-64
Speakers Woofer: 12 cm dia.. oone type
Tweeter: 2 cm dia.
Power output Model for Canada:

4.3W+4.3W (at 3.2 ohms. 315 Hz, 10%
harmonic distortiont
Inputs External microphone input jack (minijack)
Sensitivity 0.78 mV
For low impedance microphone
Outputs Headphones jack (stereo minijack)
For 16-68 ohms impedance headphones
CD out jacks (phono Jack)-2
Load impedance 10 kilohms or higher
Rated output 1.1V rms at load impedance
47 kilohms
Power requirements 120V AC. 60 Hz
DC 12V. 8 size D (R20) batteries
Power consumption AC 21W

Battery lile
Batteries Sony SUM-l 1N5) Sony Alkaline AMI
FM recording Approx. 15 hrs Approx. 35 hrs
Disc playing Approx. 6 his Approx. 16 hrs
Dimensions 97 x 292 x 194 mm (Mind)
(26 5/6 x 11 4/8 x 7 5/8 inches)
incl. projecting pans and controls
Weight a7 kg (14 lb 12 oz)

incl. batteries
Supplied accessory AC power cord (1)

Remote commander (tor CPD-455) (1)
Desrgn and specifications subject lo Change Without notice.

[II] RADIO CASSETTE- BORDER

SONY

Page 2

CFD-454/455

TABLE OF CONTENTS

Section Title Page
Specifications - 1
Safety Check-out . ~ 2
Servicing Notes .............................. 3
SECTION 1. GENERAL

Parts Identification ~~~~~ ' 4
SECTION 2. DISASSEMBLY ~~~~~~~~~~~~~~~~~~~ 5
SECTION 3. ADJUSTMENTS

3-1. Mechanical Adjustments 6
3-2. Electrical Adjustments - ~ 6
SECTION 4. DIAGRAMS

4-1. Semiconductor Lead Layouts ~~~~~~~~~~~~~ 12
4-2. Block Diagram ------------------------ 13
4-3. Printed Wiring Boards (Audio Section) ~ 16
4-4. Schematic Diagram (Tuner Section) - 19
4-5. Schematic Diagram (Audio Section) 21
4-6. Schematic Diagram (CD Section) ~~~~~ - 24
4-7. Printed Wiring Boards (CD Section) vvvvv 27
4-8. IC Block Diagram ---------------------- 30
SECTION 5. EXPLODED VIEWS """"""" 31

SECTION 6. EL'ECTRICAL PARTS LIST """ 38

SAFETY-RELATED COMPONENT WARNING! I

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 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,

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

2, 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 a 2 V AC range are
suitable. (See Fig. ,A)

To Exposed Metal
Parts on Set

r.
0.15mr L 1.5m /

._l

1.)" Earth Ground

AC
voltmeter
{0. 75 VI

Fig. A. Using an AC voltmeter to check AC leakage.

ATTENTION AU COMPQSANT AVANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE [5
sun LES DIAGRAMMES scHEMATmUEs ET LA LISTE
DES PIECES SONT cmnouEs noun LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES com-
POSANTS our: PAR DES PchEs SONY DONT LEs
Numénos sour ooNNEs DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR sow.