Sony tc k 520 service manual

Page 1

SERVICE MANUAL

Canadian Model
AEP Model
UK Model

TC-RX70/RX70ES
TC M -200V1

Model Name Using Similar Mechanism
Tape Transport Mechanism Type

SPECIFICATIONS

Recording system
Bias
Wow and flutter

4~track 2-channel stereo
AC bias
10.16% W Peak (DIN)

Fast-toward and rewind time

Approx. 90 sec. (with 0-60 cassette)

General
Power requirements

AEP, West Germany models:
220 V AC. 50/60 HZ
UK model:

Frequency response (DOLBY NR oil)

TYPE IV cassette
(Sony METAL-ES)

25-19900 Hz (:3 dB, DIN)
30-15,000 Hz (OVU recording, 13 dB)

TYPE ll cassette

25-17900 Hz (:3 dB, DIN)

(Sony UX»S) 15-18900 Hz
TYPE I cassette 25-16,000 Hz (1'3 dB, DIN)
(Sony HF-S) 15-17900 HZ

Signal-to-noise ratio (at peak level)

Dolby NR switch OFF B~TYPE GTYPE
Cassette ON ON
TYPE IV (Sony METAL-ES) 59 dB 67 dB 74 dB
TYPE ll (Sony UX-S) 58 dB 66 dB 73 dB
TYPE 1 (Sony HF-S) 56 dB 64 dB 71 dB

Inputs

Total harmonic distortion

1.0% (with Sony METAL-ES cassette)

Line inputs
(phono jacks)

Sensitivity

77.5 mV (-20 dB)

input Impedance

50k ohms

Outputs

Line outputs
(phono jacks)

Rated output level

0.44 v («5 dB) at a
load Impedance

47k ohms

Load impedance

Over 10k ohms

Headphones
(stereo phone jack)

Output level

0.3 mW at a load
impedance oi 32

ohms

240 V AC, 50 Hz
Canadian model:
120 V AC, 60 Hz

Power consumption AEP, West Germany . UK models:
20 W
Canadian model: 19 W
Dimensions Approx. 430 X 123 X 285 mm (w/h/d)
' (17 X 47/. X 11/¢ inches)
Weight Approx. 4.7 kg(10 lbs 6 oz)

Supplied accessory Audio connecting cord (2)
Design and specifications subject to change without notice.
Note

This appliance conforms with EEC Directive 87/3081EEC
regarding interference suppression.

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

STEREfl CASSETTE DECK
SONY;

Page 2

TC-K520

OPERATING VOLTAGE

TAB LE OF CONTENTS

Before connecting the unit to the power source, check that

the operating voltage of your unit is the same as the local @932! Lite Pa 6

power line voltage. . .

The Canadian model operates on 120v ACl sPecfiFanons OOOOOOOOOOOOOOOOOOOOOOOOOOO 1
Operatmg Voltage ............................. 2

The WG, AEP model operates on 220V AC.
The UK model operates on 240V AC.
1. GENERAL

Identification of Front Panel Parts ------- 3
2_ DISASSEMBLY ......................... 4
MODEL IDENTIFICATION
_ specfcam Labe 3. MECHANICAL ADJUSTMENTS ......... 7
4. ELECTRICAL ADJUSTMENTS ~~~~~~~~~~ 7
MODEL NO. TC-K520 Record/Playback Head Azimuth
Adjustment ............................. 7
STEREO CASSET'E DECK Tape Speed Adjustment ~ ~ ~ - 8
WW Playback Level Adjustment ~~~~~~~ 8
Bias Consumption Current Adjustment ~ 8
Record Bias Adjustment ~~~~~~~~~~ - . 9
SERIAL NO- Record Level Adjustment ---------------- 9
MADE IN JAPAN
5. DIAGRAMS
5-1. Printed Wiring Boards -------------------- 11
WG. AEP model: AC: 220 V ~50/60 HZ 5-2. Schematic Diagram ----------------------- 15
Canadian Model: AC: 120V SOHZ 19 W
UK model: AC: 240 V ~50/60 Hz 6. EXPLODED VIEWS ------- 21
7. ELECTRICAL PARTS LIST ~~~~~~~~~~~~ 25

SAFETY-RELATED COMPONENT WARNINGI!

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 BV SONY.

ATTENTION AU_COMPOSANT AVANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIés PAR UNE MAROUE A
sun LES DIAGRAMMES scnéMA'rIoues ET LA LISTE
DES PIECES son-r cnITIouEs POUR LA sécunrré
DE FONCTIONNEMENT. NE REMPLACER ces com-
POSANTS cue PAR DES PIECES so~v pom LES
NUMéaos som DONNES DANS c: MANUEL ou
DANS LES SUPPLEMENTS Pueués PAR souv.