Sony cfs w 301 service manual

Page 1

US Model
Canadian Model

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC
DISTORTION

With 3.2-ohm loads, both channels driven,
from 150 to 10,000 Hz; rated 1.7W per
channel minimum RMS power, with no
more than 10% total harmonic distortion.

OTHER SPECIFICATIONS

FM 87.6-108MHZ
AM 530-1605kH2
Antennas FM: Telescopic antenna
AM: Built-in Ierrite bar antenna
Frequency response 90-10000 Hz

Frequency range

Speakers Full-range: 100m (4 inches) dia. x 2
Power output 2.5W+2.5W

(with 10% harmonic distortion at A0 operation)
Inputs MIX MIC input jack (miniiack)

Mixing: sensitivity 4,4mV for low impedance
External mic: sensitivity 0.775 mV for low
impedance
Outputs Headphones iacks (stereo minijack)
for 8'3000hm impedance headphones
Power requirements 120V AC, 60Hz
9V DC, six size D (R20) batteries
Power consumption 14W in AC operation

Battery life

Batteries FM recording

Sony SUM-1 (NS) Approx. 15

Sony AM1 alkaline Approx. 26 (hours)
Dimensions Approx. 530x 145x 122 mm (w/h/d)

(20,X5/,X47/,inches)
incl, projecting parts and controls, not incl, handle
Weight Approx. 3,5kg (7lb 11oz) incl. batteries
Accessory supplied AC power cord (1)

MF-w301 PB-750 (Deck A)
MF-W301 RP-75D (Deck B)

Tape Tra nsport
Mechanism Type

SAFETV-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BV SHADING AND 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 PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITEI

LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MAROUE A syn LES DIAGRAMMES SCHE-
MATIOUES ET LA LISTE DES PIECES somcnrrtouss
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
PLACER ces COMPOSANTS oue PAR DES PIECES
SONY DONT LES NUMEROS sonr DONNES DANS cs
MANUEL ou DANS LES SUPPLEMENTS PUBLtEs PAR
SONY.

FM /AM
STEREO CASSETTE-BBRDER

SONY;

Page 2

CFS-W30'l

TABLE OF CONTENTS MODEL IDENTIFICATION
- Specification Label -
Section Elie. Eli US model
Specifications ............................ I
Safety Check-out (us Model) .................. 2 SONYQMODEL no CFS-WSOI
Parts identification ......................... 3 -.
STEREO CASSETTE-CORDER
SECTION1 ADJUSTMENTS "mm "65: :3 5375574333:
1-]. Mechanical Adjustments ................. 4 Sg-gonggnfilgifll BATT
1-2. Tape Recorder Section Electrical SIZE D lR20I x6 0R EQUIV
Adjustments ......................... 6 gel of
1-3. Radio Section Electrical Adjustments ......... 8

SECTION 2 DIAGRAMS 247/ wig
2-]. Mounting Diagram ~ Main Section ........... 11 MADE N PM mm
2-2. Schematic Diagram - Main Section .......... 15
2-3. Mounting Diagram - Tuner Section .......... l 8 Canadian model
2-4. Schematic Diagram - Tuner Section ......... 19
SONYo

SECTION 3 EXPLODED VIEws AND MODEL N°~ CPS-WWI

PARTS LIST ................... 21 STEREO CASSETTE~CORDER

FREQUENCY RANGE: FM ate-loam

SECTION 4 ELECTRICAL PARTS LIST ......... 25 53°r°

AC1I20V GOHI |4W
DC19V FLASHLIGHT BATT
SIZE D (R20) x6 0R EQUIV

MADE IN JAPAN

0 III - III 00.. I --- a 0 III - II- ,- II o a . II- a- II o o . - I»- .I . III --¢ III ~o II . DO-I -- - III- II».-- III o II - III - II 0 IV. .I o I». II o 0- Alonso-~01--- I»- r- I

SAFETY CHECK-OUT (US Model)

After correcting the original service problem, 3 Measuring the voltage drop across a resistor by
perform the following safety check before releasing means of a VOM or battery-operated AC volt-
the set to the customer: meter. The limit indication is 0.75 V, so
Check the antenna terminals, metal trim, metallized analog meters mUSt have an accurate low
knobs, screws, and all other exposed metal parts for voltage scale. The Simpson 250 and Sanwa
AC leakage. Check leakage as described below. SH'63T'd 3'5 examples 0 3 PaSSiVE VOM that

is suitable Nearly all battery operated digital
multimeters that have a 1v AC range are
LEAKAGE TEST suitable. (See Fig. A)
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to any To Exposed Metal
, . . Parts on Set
exposed metal part havmg a return to chassxs, must
not exceed 0.5 mA (500 microampers). Leakage
current can be measured by any one of three

methods. r
I. A commercial leakage tester, such as the 0.75"; €1,514) / foam!
Simpson 229 or RCA WT-S40A. Follow the (0.75m
manufacturers instructions to use these instru~ '
ments.

2. A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job. Fig. A. Using an AC voltmeter to check AC leakage.

3? Earth Ground