Sony dtc 57 es service manual

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DTC-57ES/750

SERVICE MANUAL WM

Canadian Model
AEP Model
E Model

DTC-57ES

US Model
Canadian Model
UK Model

OTC-750
Photo : DTc-S7ES
SPECIFICATIONS Model Name Using Similar Mechanism NEW
Tape Digital audio tape Tape Transport Mechanism Type DATM-loo
Recording head Rotary head
Recording lime Standard: 120 minutes.
Long-play mode: 240 minutes
(with DT'120) W d fl tter Below measurable limil
Tape speed Standard: 8.15 mm/s. M an U (10.00% W pEAK)
Long play mode: 4075 mmls
Drum rotation Standard: 2000 rpm, lnput .
Long-play mode: £000 rpm Jack type Impedance Rated lnpu! level
Error correction Double Read Solomon code
LINE IN phono jack 47 kohms -4 CBS
Tape m . .,
Track pitch 13.6 urn (204 um) DIGITAL phono Jack 75 ohms 0,5 Vp-p, 20/0
Sampling frequency 48 kHz, 441 kHz, 32 kHz . ,
Modulation system 810 Modulation DIGITAL IN Opt'ca' IaCk _ _
Transler rate 2.46 Mbii/sec.
Number of channel 2 channels, stereo
D/A conversion (Quantization) Output
Standard: 16-bit linear Jack type Impedance Rated Load
Long-play mode: 12-bit output Impedance
non-linear
Frequency response Standard: 2-22.000 Hz (£05 LINE OUT phone jack 470 ohms .4 st More than
dB) 10 kohms
Long (105 dB) PHONES stereo 220 ohms 0.6 mW 32 ohms
phone jack
DTC-S7ES (AEP, DTC-57ES (US. DIGITAL .
E model). DTC-750 Canadian model) 1- phone IaCk 75 ohms 0-5 Yp'P
Signal to _§_l_'r_ more than 92dB more than 93dB (9705755) :20 /°
noise ratio LP , more than 92013 DIGITAL OUT (optical jack): wavelength 660 nm
Dynamic 3 more than 92dB more than 93dB
range LP more than 92dB
Total harmonic SP less than 0.0045% less than moo-1% continued on next page _
distortion (1kHz) LP less than 008% less than 0.08%

Elifézlflfiym DIGITAL AUDIO TAPE DECK
SONYa

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DTC-57ES/ 750

General TABLE OF CONTENTS
Power requirements 120V AC, 60H: (US, Canadian models)
240V AC, 50Hz (UK model)
220-230v AC, 50/60Hz (AEP model) Section Title m

110-120, 220-240V AC adjustable,
50/60Hz (E model)

Power consumption 32 W 1 _ GENERAL
Dimensions (w/h/d) DTC-S7ES:
& Weight ADPrOX 470x125><350mm Features ....................................... 4
18 58 5 137 'nches . .
Lpplofj :kg (1/78 :b 1002)) Location and Function of Controls . 5
DTC-750: -
Approx. 430x125x350mm Connections .............................................................. 8
I17X5><_13 7/8 inches) Block Diagram .......................................................... 8
Approx. 7.2kg 5 lb 01) Clock Setting ............................................................ 9
Remote commander (supplied)
Remote comml Sysem 'nkared control 2. DISASSEMBLY ............. 10
Power requirements 23V DC, with two size AA (R6) 3 ADJUSTMENTS 13
baneries . ...... .......
Dimensions Approx. 63 x 19 x 175 mm 3-1. Electrical Adjustments .................................... 15
w/h/d .
:2 ya i 5/. x 7 inches) 3-2. Checks for Date Function ............................... 17
Weight Approx. 130 g (4 oz) incl.
batteries. -4. DIAGRAMS
. . 4-1. Circuit Boards Location .................................. 18
Supplied accessories .
Sony batteries SUM-3(NS) (2) 4-2. Block Diagram . 19
Audio connecting cords (2 phono plugs - 2 phono plugs. 4_3 Waveforms _ 23
stereo for line inputs and outputs) (2) ' . '
Screws (4) (DTC-57ES only) 4-4. Semiconductor Lead Layouts. . 25
Design and specifications subject to change without notice, 45' fggtngrvgurprpgiysloafiay / MD section _ 28
4-6. Schematic Diagram
- Power supply/ Display/ MD section -.. . 31
4-7. Printed Vlfiring Boards
- Main section - .. . 36
4-8. Schematic Diagram
SAFETY-RELATED COMPONENT WARNINGI! , Main section _ ..... _ 39
COMPONENTS IDENTIFIED By MARK A OR DOTTED LINE 4.9_ IC Block Diagrams . 43
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND iN , ,
THE PARTs LiST ARE CRITICAL To SAFE OPERATION. REPLACE 440- PI" Functions ----- - 47
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR As SHOWN IN THIS MANUAL OR IN 5' EXPLODED VIEWS
SUPPLEMENTS PUBLISHED BY SONY- 5-1. Cabinet Section .............................................. 57
5-2. Front Panel Section ........................................ 58
ATTENTION AU COMPOSANT AYANT RAPPORT 5'3' Chassis Section """"" 59
A LA SECURiTEi 5-4. Mechanism Section 1 . 60
LEs COMPOSANTS iDENTiPiEs PAR UNE MAROUE A SUR 5-5. Mechanism Section2.. . 61
LEs DIAGRAMMES SCHEMATIOUES ET LA LISTE DES PIECES . -
SONT CRmOUEs POUR LA sEcumTE DE FONCTIONNB 5-6. Mechanism Sections ..................................... 62
MENT. NE REMPLACER SES COMPOSANTS QUE PAR DES 5-7. Mechanism Section 4 ..................................... 63
PIECES SONY DONT LES NUMEROS SONT DONNES DANS
CE MANUEL ou DANS LES SUPPLEMENTS PusLiEs PAR 6 . ELECTRICAL PARTS LIST ..................... . 64
SONYL

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, be 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 suppIy may
short an adjacent terminal while destroying the device.

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