Sony dtc 570 service manual

Page 1

DTC-57ES/750

SERVICE ilAlllUAl WM

Canadian Model
AEP Model
E Model

DTC-57ES

US Moaei
Canadian Model
UK Model

pro-750
Photo : DT057ES
SPECIFICATIONS Model Name Using Similar Mechanism NEW
Tape Digital audio tape Tape Transport Mechanism Type DATM-lOO
Recording head Rotary head
Recording time Standard: 120 minutes.
Long-play mode: 240 minutes
(with DT'120) W d fl tt Below measurable limit
Tape speed Standard: 8.15 mm/s, 0w an u er (womofl, W pEAK)
Long play mode: 4075 mm/s
Drum rotation Standard: 2000 rpm, IHPU
Long«p|ay mode: 1,000 rpm Jack type Impedance Rated Input level
Error correction Double Read Solomon code
LINE IN phono jack 47 kohrns -4 dBS
Tape . 0
Track pitch 13.6 am (20.4 mm) DIGITAL IN phono lack 75 ohms 0,5 Vp»p, 20 /0
Sampling frequency 48 kHz, 44.1 kHz, 32 kHz . ,
Modulation system 8-10 Modulation DIGITAL IN Opt'cal la°k _ _
Transfer rate 2.46 Mbiilsec.
Number 0t channel 2 channels, stereo
D/A conversion (Quantization) Output
Standard: 16-bit lineary Jack type Impedance Rated Load
Long-play mode: 12-bit output Impedance
non-linear
Frequency response Standard: 2422.000 Hz (10.5 LINE OUT phone jack 470 ohms .4 dBS More than
03) 1O kohms
Long-play mode: 244.500 Hz
(105 d3) PHONES stereo 220 ohms 0.6 mW 32 ohms
phone jack
DTC-57ES (AEP, DTC-57ES (US. DIGITAL
E model), DTC-750 Canadian model) OUT phone We" 75 ohms 0-5 ¥p~p
Signal to _§_l__ more than 92dB more than 93dB (05755) :20 /°
noise ratio LP , more than 92dB DIGITAL our (optical jack): wavelength 660 nm
Dynamic 2 more than 92dB more than 93dB
range LP more than 92dB
Total harmonic SP less than 0.0045% less than doom c tinued on next a a
distortion llkl-lzl LP less than 0.08% less than 0.03% °" F 9

fiifszzfirfiymm DIGITAL AUDIO TAPE DECK
SONYa

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DTC-57ES/ 750

General

Power requirements 120V AC, 60Hz (US, Canadian models)
240V AC, 50Hz (UK model)
220-230V AC, 50/60Hz (AEP model)
110-120, 220-240V AC adjustable,
50/60Hz (E model)

32 W

DTC57ES:

Approx. 470x125>650mm

(18 5/8X5x13 7/8 inches)

Approx. 8kg (17 lb 1002)

OTC-750:

Approx. 430x125x350mm
(17X5X13 7/8 inches)

Approx. 7.2kg (15 lb 140:)

Power consumption
Dimensions (w/h/d)
& Weight

Remote commander (supplied)
Remote control system Infrared control
Power requirements 3V DC, with two size AA (R6)

batteries
Dimensions Approx, 83 x 19 x 175 mm
(w/h/d)
(2 /2 X 3/4 x 7 inches)
Weight Approx. 130 g (4 oz) incl.

batteries V

Supplied accessories

Sony batteries SUM-3(NS) (2)

Audio connecting cords (2 phone plugs - 2 phono plugs,
stereo (or line inputs and outputs) (2)

Screws (4) (DTC-57ES only)

Design and specifications subject to change without notice.

SAFETY-RELATED COMPONENT WARNING I!

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 PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITEI

LEs COMPOSANTS IDENTIFIES PAR UNE MAROUE At. SUR
LES DIAGRAMMES SCHEMATIOUES ET LA LISTE OEs PIECES
SONT CRITIOUES POUR LA SECURITE' DE FONCTIONNE-
MENT. NE REMPLACER SES COMPOSANTS QUE PAR DES
PIECES SONY DONT LES NUMEROS SONT DONNES DANS
CE MANUEL ou DANS LES SUPPLEMENTS PUBLIES PAR
SONYL

TABLE OF CONTENTS
Seam Elia Bags
1. GENERAL
Features ....................................... 4
Location and Function Of Controls 5
Connections .............................................................. 8
Block Diagram .......................................................... 8
Clock Setting ............................................................ 9
. DISASSEMBLY .................... . .............. 10
. ADJUSTMENTS ..... ................................ 13
3-1. Electrical Adjustments .................................... 15
3-2. Checks for Date Function ............................... 17
-4. DIAGRAMS
4-1. Circuit Boards Location .................................. 18

4-2. Block Diagram
4-3. Waveforms .
4-4. Semiconductor Lead Layouts

4-5. Printed Wiring Boards
- Power supply / Display/ MD section - .......... 28

4-6. Schematic Diagram
- Power supply/ Display/ MD section -..

4-7. Printed Vlfiring Boards
- Main section - ..

4-8. Schematic Diagram
~ Main section - .....

4-9. IC Block Diagrams
4-10. Pin Functions .....

EXPLODED VIEWS

5-1. Cabinet Section .............................................. 57
5-2. Front Panel Section ........................................ 58
5-3. Chassis Section ........

5-4. Mechanism Section 1

5-5. Mechanism Section 2.. . 61
5-6. Mechanism Section 3 ..................................... 62
5-7. Mechanism Section 4 ..................................... 63
ELECTRICAL PARTS LIST ..................... . 64

short an adjacent terminal while destroying the device.

PRECAUTIONS FOR INSPECTIONS AND REPAIR WITH POWER OFF

Before beginning repair work after turning OFF the main switch, be sure to first remove CN932 (EH8P) of the power
board. When assembling the equipment, he sure to plug this connector last.

This is because, even with the main switch turned OFF, electric charges still remain in the smoothing capacitor in
the power board. Therefore, if another flexible board is inserted or removed, a terminal of the power supply may

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