Sony tc k 390 service manual

Page 1

C-K390

ERVIBE MANUAL

. Dolby noise reduction and HX Pro headroom extension maniactured under
license from Dolby Laboratories Licensing Corporation. HX Pro originated by

Bang & Olutsent

D0 LBY", the double-D symbol DD and HX PRO" are tmdemarks of Dolby
Laboratories Licensing Corporation

AEP Model
UK Model

TC~K370

SPECIFICATIONS

Model Name Using Similar Mechanism

Tape Transport Mechanism Type

TCM»19OVB1ZCS

Recording system
Fast winding time
Bias

Heads

Motors

4-track 2-ohannel stereo

Approx, 90 sec. (with Sony C-60 cassette)
AC bias

Erasing head x I (F&F head)
Playback/Recording head >< 1 (SD head)
Capstan motor x 1 (DC servo motor)
Reel motorxl (DC motor) -

Signal-lornoise ratio (at peak level)

Cassette
(Dolby NFl OFF)

Type IV (Sony Type ll Type |
Metal-S/Select) (Sony UX-S) (Sony HRS)
58 dB 57 dB 55 dB

Measured at peak level weithtsd without NFt. The SIN is improved by about
l5 dB 51500 Hz and by about 20 (15 about 1 kHz with Dolby»C NR on. and by

5 dB at 1 kHz and by 10 dB about 5 kHz With Dolby-B NR on.

Harmonic distortion

0.4% (with Sony TYPE I, 160 nWb/m.
315 Hz, 31d HD.)

1.3% (with Sony TYPE IV, 259 nWb/m,
315 Hz, 3rd HDJ

Frequency response (DOLBY NFl OFF)

Type IV cassette
(Sony Metal-S/Select)

30 - 15,000 Hz (:3 dB, lEC)
30 - 13,000 Hz [13 dB (-4 dB recording)]

Type ll cassette
(Sony UX-S)

30 - 15,000 Hz (13 dB, IEC)

Type l cassette
(Sony HFVS)

30 - 14(000 Hz (if) dB, IEC)

Wow and flutter

Inputs

1 0,13% W.Peak (IEC)
0,07% W.RMS (NAB)
: 0,18% W.Peak (DlN)

Line inputs
(phono jacks)

Sensitivity 016 V

input impedance 47 k onms

Outputs

Line outputs
(phone jacks)

Rated output level

0.5 V at a load impedance
ol 47 k ohms

Load impedance

Over 10 k ohms

Headphones Output level 1 mW at a load impedance
(stereo phono jack) of 32 ohms

General

Power requirements AEP Model:

Power consumption
Dimenswns

Weight

Supplied accessories

220 - 230 V AC, (or 240 V AC adjustable by
Sony personnel), 50/60 Hz
UK Model:
240 V AC (or 220 V AC adjustable by Sony
personnel). 50/60 Hz

21 W

Approx, 430 x 123 x 300 mm (w/h/d)
(17 x 41/; x ill/i inches)

including pro)ecting parts and controls
Approx. eta kg (8 lbs 6 02)

Audio connecting cords (2)

Design and specifications are subject to change without notice.

Note

This appliance coniorms with EEC Directive B7/BOB/EEC regarding

interlerenoe suppression.

STEREO CASSETTE DECK

ONYFE

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TC-K390

TABLE OF CONTENTS

Section Title Page

Specifications ~1

1. GENERAL
Identifying the Pans
Recording .............

2. DISASSEMBLY
2-1, From Panel ~~~~~~~~
22. Mechanism Deck'
2.3,~ Head ................
2~4i Fitting Base Block ~-
2-5, Motorm

£- .

o'xéxcnt}.

BLOCK DIAGRAM ................................................. 7
. EXPLANATION OF Ic TERMINALS ......................... 9
. ADJUSTMENTS

S-I. Mechanical Adjutments ~~
5~2, Electncal Adjustments

MODEL IDENTIFICATION
(Specification Label)

SON-Ya

STEREO CASSETTE DECK

MODEL NO. TC-K390

AEP model : AC 220-230V~50 / GOHZ 21W
UK model : AC 240V~50 / 60Hz 21W

Section Title Page

6. DIAGRAMS
61. Circuit Boards Location
6-2. Printed Wiring Boards
6-3I Schematic Diagram
(SYSTEM CONTROL SECTION) ~~~~~~ 19
64. Schematic Diagram (AUDIO SECTION) --------------- 24

7. EXPLODED VIEWS
7~I. Chassis Section """""
7-2. Front Panel Section
7-3 Mechanism Sectionl
7-4I Mechanism Section2m

3. ELECTRICAL PARTS LIST --------------------------------- 31

SAFETY~RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A OR DO'I'TED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.