Sony dtc 690 service manual

Page 1

DTC-690

SERVICE MANUAL us Model

Canadian Model
AEP Model

SPEC'F'CAT'ONS Model Name Using Similar Mechanism DTC-59ES
Tape Digital audio tape Tape Transport Mechanism Type DATM-102
Recording head Rotary head
Recording time Standard: 120 minutes
Long-play mode: 240 minutes
(with DT-120) Input
Tape speed Standard: 8.15 mm/s.
Long play mode: 4075 mm ls Jack type Impedance Rated Input level
Drum rotation Standard: 2000 rpm, . _
Long-play mode: 1.000 rpm LINE in phone Jack 47 kohrns 4 st
Error correction Double Reed Solomon code DIGITAL IN phono jack 75 ohms 0.5 Vp Tape . . _
Track pitch 136 um (20.4 um) D'GmLm WW 3 "
Sampling frequency 48 kHz, 44.1 kHz. 32 kHz
Modulation system 8-10 Modulation
Transler rate 246 Mbit/sect Output
Number of channel 2 channels, stereo Jack typo lmpodanoo Rated Loud
D/A conversion (Quantization) output Impedance
Standard: 16-bit linear
Long~play mode: 12bit non-linear LINE OUT phone jack 470 ohms -4 st More than 10
Frequency response Standard: 242,000 Hz (:05 dB) kohms
Long-play mode: 244,500 Hz
(£05 dB) pHoNEs stereo 220 ohms 13 mW 32 ohms
Signal to noise ratio Standard: more than 90 dB phone jack
Long-play mode: more than 90 d8
Dynamic range Standard: more than 90 dB
Long-play mode: more than 90 dB DIGITAL OUT (optical jack): wavelength 660 nm
Total harmonic distortion Standard: less than 000596 (1 kHz)
Long-play mode: less than 0.08%
(1 kHz)
Wow and flutter Below measurable limit

($030196 W, PEAK)

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DIGITAL AUDIO TAPE DECK
SON Y;

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General TABLE OF CONTENTS
Power requirements 120V AC, 60Hz

(US, Canadian model)
220/230v AC, 50/60H2 Sgcfion Title Rage
110 ~ 120V or 220/240V AC 50/60Hz
Power consumption 31 W
Dimensions Approx. 430 x 110 x 350 mm (w/h/d)
(16 I x 4 3/, x 13 U, inches) 1' GENERAL
Weight ADDIOXr 5 k9 (11 lb) Features .......... ................................................... 4
Remote commander (supplied) Location and Function of Controls ............................ 5
Remote °°""°' sYse' f'aed °°°' Connections .............................................................. 9
Power requirements 3V DC, with two size AA (R6)
. . bauems 2. DISASSEMBLY . 11
DImensrons Approx. 40 x 20 x 175 mm (w/h/d)
(1 V X I x 7 mm) . AD TMENT 14
Weight Apple)? 100 914 02) incl. batteries. 3 JUS S
31. Electrical Adjustments .................................... 16
Supplied accessories
Remote commander RM-DGQOA (1) 4. DIAGRAMS
Sony batteries SUM~3(NS) (2) . , ,
Audio connecting cords (2 phone plugs - 2 phone plugs, stereo for 4'1 ~ CII'CUlt Boards Location 19
line inputs and Outputs) (2) 4_2. Block Diagram . 20
Design and specifications are subject to change without notice, 43. Waveforms 23
Accessories not supplied 4-4. Semiconductor Lead Layouts ..............
gptical fable d 23%;?6ng-10H3 910» 4-5. Printed Wiring Boards
onnec mg cor - . etc. _ . ~ _ .......... 27
(2 phone plugs 2 phono plugs: MD / Power supply / Display sectIon
connectors plated with gold. high 4-6. Schematic Diagram
fidelity LCOFC line cord) - MD / Power supply/ Display section 31
VMC-1 ES, etc. (phono plug - phone _ . .
plug): for digital connection 4'7- Pr 'med erlng Boards
Cleaning cassette DT~1OCL - Main section - ............................ . .................. 36
4-8. Schematic Diagram
~ Main section - . 39
SAFETY-RELATED COMPONENT WARNINGII 4'9~ '0 Bi°°k Diagrams. 43
COMPONENTS IDENTIFIED BY MARK A 0R DOTTED LINE 4'10- PI" Functions ------
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND W
THE PARTS LIST ARE CRITICAL T0 SAFE OPERATION. REPLACE 5' EXPLODED VIEWS
THESE COMPONENTS WITH SONY PARTS WHOSE PART 5-1. Cabinet Section .....
NUMBERS APPEAR As SHOWN IN THIS MANUAL OR IN 52 F tP IS t'
SUPPLEMENTS PUBLISHED BY SONY. ' ' ron ane e°°"

5-3. Chassis Section ..

ATTENTiON AU COMPOSANT AYANT RAPPORT 5 Mechanism Sectiont
A LA SECURITEI 5-5. Mechanism Section2 .......... .......

LES COMPOSANTS IDENTIFIES PAR UNE MAROUE A SUR 5-6. Mechanism Sections ..................... .. .............. 60
LES DIAGRAMMES SCHEMATIOUES ET LA LISTE DEs PIECES . .

SONT CRITIQUES POUR LA SE-CURTE DE FONCTIONNE 5-7. Mechamsm Sectlon4 ..................................... 61
MENT. NE REMPLACER SES COMPOSANTS OUE PAR DES RI ALP T Li 1- 62
PIECES SONY DONT LES NUMEROS SONT DONNES DANS 6. ELECT C AR 8 S

CE MANUEL OU DANS LEs SUPPLEMENTS PUBLIES PAR

SONY.

PRECAUTIONS FOR INSPECT IONS 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.

Even with the main switch turned Off, there still remain electrical charges in part of the power circuit. Therefore,
plugging in or removing the connector could cause the power supply terminal to short with an adjacent terminal.
This could cause possible component damage.

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