Sony tc w 310 service manual

Page 1

SERVICEMANUAI.

US Model
Canadian Model
AEP Model

UK Model
E Model

SPECIFICATIONS

Recording system
4vtrack 2-channel stereo
Fast winding time
Approx. 120 sec. (with 060 cassette)
Bias AC Bias
Signal-to-noise ratio (NAB, at peak level)

Cassette D°'by NR swm OFF B-TYPE ON C-TYPE 0N
TYPE IV (Sony METAL-ES) 58 dB 65 as 71 as
TYPE it (Sony UX-S) 56 dB 63 as 69 dB
TYPE I (Sony HF-S) 54 dB 31 dB 67 dB

Total harmonic distortion
1.0 °/o (with Sony METAL-ES cassettes)

Frequency response (DOLBY NFI OFF)

TYPE IV cassette 30-15,000 Hz (:3 dB DIN)
(Sony METAL-ES) 30-13000 Hz (OVU recording)

TYPE II cassette (SO-14,000 HZ (:3 dB DIN)
(Sony UX-S)

TYPE I cassette
(Sony HF-S)

30-1a,ooo H2 (:3 dB DIN)

Wow and flutter 0.12% WRMS (NAB)
10.2% W Peak (DIN)

Inputs

Line inputs Sensitivity 77.5 mV (-20 dB)

(phono jacks)

Input impedance 50k ohms

Outputs

Rated output level 044 V (-5 dB) at a load
impedance 47k ohms

Line outputs
(phono jacks)

Load impedance Over 10k ohms

0.3 mW at a load
impedance of 32 ohms

Headphone output Output level
(stereo phone
jack)

General
Power requirements

120 V AC, 60Hz (US, Canadian Model)

220 V AC, 50/60Hz (AEP Model)

240 V AC, 50/60Hz (UK Model)

120 V, 220 V, 240 V AC, 50/60Hz (E Model)
Power consumption

18W

Dimensions Approx. 430x118x280 mm (wlhld)
(17X4/¢><11/- inches)
including projecting parts and controls
Weight Approx. 3.4 kg (7 lbs 8 oz)

Supplied accessory
Audlo connecting cord (2)

Design and specifications subject to change without notice.

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol DC] are trademarks of
Dolby Laboratories Licensing Corporation,

3mm) CASSETTE DECK
SONE

Page 2

TC»W310

SAFETY CHECK-OUT -MODEL IDENTIFICATION-

(Specification Label)
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.

TC-W310:

SONYo

STEREO CASSETTE DECK

The AC leakage from any exposed metal part to V
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.

MODEL NO. TC-W310

LEAKAGE TEST

l. A commercial leakage tester, Such as the
Simpson 229 or RCA WT»54OA. Follow the
manufacturers instructions to use these instru~
ments.

2. A battery-operated AC milliammeter, The Data US Canadian model: AC 120V GOHZ 18W
Precision 245 digital multimeter is suitable for AEP model: AC 220V~50/60HZ 18W
this job. UK model: AC 240V~50/60Hz 18w
E model: AC 120, 220, 24OV~50/60Hz 18W

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-63'lrd 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

J: AC
0. I5uF €15 kn / voltmeter
(0. 75 V}

T:- Earth Ground

F/g. A. Using an AC voltmeter to check AC /eakage.

ATTENTION AU COMPOSANT AVANT RAPPORT

A LA SECURITEI

SAFETY-RELATED 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 SONY.

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A
sun LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT cmrloues POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER ces com-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMénos SONT DONNés DANS cs MANUEL ou
DANS LES SUPPLEMENTS PUBLIés PAR SONY