Sony cfd 440 service manual

Page 1

SERVICE MANUAL

CHI-440

US Model
Canadian Model
Australian Model

DIGITAL AUDIO
SPECIFICATIONS Model Name Using CD Section CFD-W120
Similar Mechanism - _
AUDIO POWER SPECIFlCATIONS (us model) Tape 59cm" CFS 204
POWER OUTPUT AND TOTAL HARMONIC Optical Device Name KSM-ZlOIBAN
DISTORTION Tape Transport Mechanism Type MF-440-64 '

With 3.2-ohm loads, both channels driven from
150-15,000 Hz: rated 2.3 W per channel mini-
mum FlMS power, with no more than 10% total
harmonic distortion in AC operation.

OTHER SPECIFICATIONS

CD player section
System
Laser diode properies

Frequency response
Wow and llutter

Radio section
Frequency range

Antennas

Compact disc digital audio system

Material: GaAIAs

Wavelength 780 nm

Emission duration: Continuous

Laser output: less than 44.6 pw

' This output is the value measured at a
distance of about 200 mm lrom the
objective lens surface on the optical pick-
up block.

20 - 20,000 Hz is dB

Below measurable limit

FM: 87.6-108 MHz

AM: ESQ-1,710 kHz (US, Canadian model)
530-1,605 kHz (Australian model)

FM: Telescopic antenna

AM: Built-in lerrite bar antenna

Tape recorder section and general

Recording system
Frequency response

Speaker

4-track Zchannel stereo

80 - 10,000 Hz

(with TYPE I (NORMAL) cassette)
Woofer: 10 cm dia.. cone type
Tweeter: 2 cm

Power output Full-range speakers: 2.3 W + 2.3 W (at 3.2
ohms. 10% harmonic distortion)
Inputs Mixing microphone input jack (minijack)
Sensitivity 2.5 mv
For low impedance microphone
Outputs Headphones jack (stereo minijack)
For 16 - 68 ohms impedance head-
phones
Power requirements 120 V AC, 60 Hz (US, Canadian model)
240 V AC, 50 Hz (Australian model)
DC 9 V, 6 size D (R20) batteries
Power consumption AC 1 8 W
Battery lite (hours)
FM recording Playback CD playing
Sony SUM-1 (NS) approx. it approx. 8 approx, 5
Sony Alkaline AM 1 (N) approx. 17 approx. 12 approx. 7
Dimensions 533 x 230 x 207 mm (w/h/d)
(23% x 9% x 8% inches)
incl. projecting pans and controls
Weight Approx. 5.7 kg incl. batteries

Supplied accessories

(Approx. 12 lb 9 oz)
AC power cord (1)

Design and specifications subject to change without notice.

on RADIO CASSETTE-CBRDER
S 0 NY;

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C FD-44O

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.

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 0.75V, 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
Part: on Set

AC
aJsuF-I: ins/<11 / voltmeter

(0, 75 V}

'%" Earth Ground

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

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BV 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
SONV PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

TABLE OF CONTENTS

Section Title Page
1. SERVICING NOTES .............................. 3
2. GENERAL
2-1 Location and Function of Controls ................ 4
3. DISASSEMBLY
3-1 Front Cabinet SectiOn . . . . .5
3-2 Pointer Setting ............ , .5
4. MECHANICAL ADJUSTMENTS .................... 6
5. ELECTRICAL ADJUSTMENTS
5-1. Tape Recorder Section .......................... 6
52. Tuner Section .................................... 7
5.3. CD Section ..
6. DIAGRAMS
6-1. Circuit Boards Location ........................ 13
6-2. Semiconductor Lead Layouts .................... 14
63. Block Diagram .................................. 15
6-4. Printed Wiring Board57Tuner/Audio/

Mechanism Deck/ Power Sectioni ..............
6-5. Schematic Diagram-Tuner Section- .
6»6. Schematic Diagram-Audio/Mechanism Deck/

Power Sectioni ................................ 23
6-7. Schematic Diagram-CD Section~ .............. 27
6-8. Printed Wiring BoardSCD Section- ............ 31
7. EXPLODED VIEWS
7-1, Cabinet Section . .35
7-2. Front Cabinet Section 36
7-3. Tape Mechanism (1) Section . .37
7-4. Tape Mechanism (2) Section .................... 38
7-5, CD Block Section .............................. 39
7-6. Optical Pick-up Section .......................... 40
7-7. Speaker Section ................................ 41
8. ELECTRICAL PARTS LIST ...................... 42

ATTENTION AU COMPOSANT AYANT RAPPORT

A LA sécumréi

LES COMPOSANTS IDENTIFIES PAR uue MAROUE [A
sun LES DIAGRAMMES SCHEMATIOUES ET LA LISTE
DES PIECES SONT cnmouEs POUR LA sécumré
DE FONCTIONNEMENT. NE REMPLACER ces COM-
POSANTS ou: PAR DES PIECES sonv DONT LES
NUMEROS sowr DoNNés DANS ce MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR souv.

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