Sony tc w 370 service manual

Page 1

TB-W370/ W41 1/ WR5H/ WR570

SERVICE MANUAL

U8 Model

TC-W370/W47 7/WR57 7/WR570

Canadian Model
AEP Model

UK Model

E Model

TC - W3 70/ WR5 70

Photo: TC-WR57O

SPECIFICATIONS TC_W320/W3205
Model Name Usmg Similar Mechanism /WR520/WR5208
Recording system 4-track 2-channel stereo
Fast winding time Approx. 90 sec. (with Sony 0-60 cassette) TC-W37O DECK A TCM»190VA12
Bias AC bias B1 2
Signal-to-noise ratio (at peak level) / W41 1 DECK B TCM 190V
wen OFF B T ON C T ON Tape Transport TC WR511 DECK A TCMei 90RA1 2
Cassette ' we ' "5 Mechanism Type DECK B TCM-190R822
Type'V DECK A TCM-lQORAlZ
(Sony METAL-SLT/S) 58 dB 56 dB 73 dB TC-WR57O 1 2
Type II (Sony ux-si 57 dB 65 dB 72 dB DECK B TCMJ SORB
T el Son HF-S 55 dB 63 dB 70 dB
yp ( y ) General
Total harmonic distortion 1.0% (with Sony METAL~SLT/S cassettes) Power requirements US' Canadian model; 120V AC ' SOHZ
AEP, Germany model: 220V AC, 50/60Hz
Frequency response (DOLBY NR OFF) UK model: 240V AC 50/60Hz
Type lV cassette 30 - 15,000 Hz (:3 dB, IEO) E model: 120, 220, 240V
(Sony METAL-SLT/S) 30 - 13.000 Hz [13 dB OVU (,4 dB) AC adiustable, 50/60Hz
recording] Power consumption 23 W
Type ll cassette 30 _ 15 000 H 13 dB lEC Dimensions Approx. 430 x 125 x 285 mm (w/h/d)
(Sony UX-S) u ) (17 x 5 x 11v. inches)
T e l cassette including projecting parts and controls
(ggny Has) 30 - 14,000 Hz (:3 dB, IEC) Weight Approx 4.5 kg (9 lbs 15 02)
Wow and flutter 1.014% W Peak (IEC) Supplied accessory Audio connecting cords (2)
0,08% WRMS (NAB) Design and specifications subject to change without notice.
10.19% W, Peak (DlN)
inputs Note
Line inputs Sensitivity 77.5 mv This appliance oonlorrns with EEC Directive 87/308/EEC regarding
(phono jacks) Input impedance 47 k ohms Interference suppressmn.
Outputs Dolby noise reduction manufactured under license from
me outputs Rated output level 0.32 V at a load Dolby Laboratories Licensing Corporation.
(phone Jacks) Impkedance 0' "DO LBY" and the double-D symbol DC are trademarks of
47 ohms Dolby Laboratories Licensing Corporation.
Load impedance Over 10 k ohms
Headphones Output level 03 mw at a load

STEREO CASSETTE DECK
S 0 NY;

Page 2

TC-W370/W411/WR51 1 /WR570

TABLE OF CONTENTS

SECTIUNI.GENERAL~o-~v'-~~~~---'~'
SECTIONZ.DISASSEMBLY~'~'~~H~'»~-~~

SECTION 3. ADJUSTMENTS
3-1. Mechanical Adjustments ' ' ' - - .
3-2. Electrical Adjustments ~ - ~ ' ' - -
SECTION 4. DIAGRAMS
4-li Printed Wiring Boards- ~ ~ . - ~ . - 12
4-2. Schematic Diagram
-System Control Section - ~ ~ . - - ' ~ . ~17
4-3. Schematic Diagram
~AudioSecti0n- . . . . . . . . . . . . .22
4-44 Circuit Boards Location ~ ~ ' . ~ - - ~ 27
4-5. Semiconductor Lead Layouts - ~ ~ . - -27
4-6i Schematic Diagram
-MDSection--rr-~~"-~~~~~27

SECTION 5. EXPLODED VIEWS
5-]. Chassis Section» . . 0 - - - . ~ ~ - ~30
5-2. Front Panel Section - ~31
5-3t Mechanism Section 1 - ~ . ~ ~ . - - '32
5-4. Mechanism Section 2~ - ~ . . . . - - ~33

Section Title Page
4
5

SECTIONS. ELECTRICAL PARTS LIST. ~ - r r r ' ~ ~34
MODEL IDENTIFICATION TC-Wi7?
.. . TC-W 1
(Spectflcation Label) TC»WR51 1
TC~WR57O Operating voltage (E model)

Operate the unit on either 120. 220 or 240 V AC. 50/60

Hz. Before connecting the unit to the power source.
check that the operating voltage oi your unit is the same

8 ONY® MEDEL NO' m as the local power line voltage,

The voltage selector is located on the rear panel. It the

selector must be reset. disconnect the AC power cord

and set the selector to the appropriate voltage,

STEREO CASSETTE DECK

VOLTAGE Selector

VOLTAGE
220v
US, Canadian model: ACIZOV 60Hz 23W 240v
UK model: AC240V ~50/60Hz
Germany, AEP model: AC220-230V ~50/60Hz 120v

E model: AC120, 220, 240V ~50/60Hz 23W