Sony dtc 77 es service manual

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DTC-TIES/B'IES

SERVICE MANUAL us Model

DTC-87ES

AEP Model
UK Model

DTC-77ES

Photo: DTC-87ES

Model Name Using Similar Mechanism New Mechanism

Tape Transport Mechanism Type DATM<51

SPECIFlCATIONS

Tape Digital audio tape DTC-77ES DTC-87ES
Recording head Rotary head 8' H °~se sP more than 94 dB
Recording time Standard: 120 minutes. 5%? o n Lp m°re 3 93 d3 more than 93 dB
Long-play mode: 240 mlnutes . SP more than 94 dB
(with DT.120) Dynamlc range LP more than 93 (18 more than 93 dB
Tape Speed Etandalrd: 8'12W'2/3'75 / Tom harmonic SP less than 0.0045% less than 0.004%
, mg P 33 "0 9' ' mm 3 distortion (1 kHZ) LP less than 008% less than 008%
Drum rotation Standard: 2,000 rpm,
Long»play mode: 1,000 rpm EPP': Standard-playdrgode
Error correction Double Read Solomon code ong'p ay mo
Tape Wow and flutter Below measurable limit
Track pitch 136 pm (204 um) (*O'OOW" W' PEAK)
Sampllng frequency 48 kHz, 441 kHz, 32 kHz
Modulation system 8-10 Modulation
Transfer rate 2.46 Mbit/secr
Number of channel 2 channels stereo

D/A conversion (Quantization)
Standard: 16-bit linear
Longsplay mode: 12-bit
non-linear
Frequency response Standard: 2-22.000 Hz ($05
dB)
Long ($0.5 dB)

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DIGITAL AUDIO TAPE DECK

SONI

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DTC-77ES/87ES

Input
Jack; j'pe', Impedance Rated input level
LINE IN f phono jack 47 kohms -4 st
DIGITAL IN phono jack 75 ohms 0.5 Vp-p. 20%
DIGITAL N optical jack -- -
Output
Jack type , ~ Impedance Rated Load
* , 5 » output Impedance
LINE our phono jack 470 ohms -4 st More than
. 10 kohms
pHONEs stereo phone 220 ohms 2.0 32 ohms
, ,; * jack mW
DIGITAL OUT (optical jack): wavelength 660 nm
General
Power requirements US model: 120 V AC, 60 Hz
AEP model: 220/280 V AC,
50/60 Hz
UK model: 240 V AC,
50/60 Hz
Power consumption 37 W
Dimensions US. AEP model:
Approx. 470 x135 X 350 mm
(w/h/d)
(185/. X 53/. X 137/, inches)
UK model:
Approx. 430 x135 X 850 mm
(w/h/d)
(17 X 5/. X 13. inches)
Weight US, AEP model:
Approx. 11 kg (24 lb 5 oz)
UK model:

Approx. 10.2 kg (22 lb 8 02)

Remote commander (supplied)

Remote control system Infrared control

Power requirements 3V DC, with two size AA (R6)
batteries

Dimensions Approx. 83x19x175 mm (w/h/d)
(2 /2 x 3A x 7 inches)
Weight Approx. 130 g (4 oz) incl.

batteries.

Supplied accessories

Sony batteries SUM-3(NS) (2)

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

Screws (4) '

Design and specifications subject to change without notice.

_2_

Section

Specifications -----------------

TABLE OF CONTENTS

M

Model Identification ~~~~~~~~~ 3
Safety Check-out ................ 3
1. GENERAL

Features ................................ 4

Location and Function of Controls 5

Connections 8

Time Settings ------------- 9
2_ DISASSEMBLY ......................... 10
3. ADJUSTMENTS
3-1. Mechanism Adjustment - - -
3-2. Electrical Adjustment
3-3. Checks and Adjustments for Date Function 17
4. DIAGRAMS
4-]. Pin Functions
4-2. BIock Diagram - ~
4-3. Printed Wiring Boards

__ RF/MD Section _ ...................... 26
4-4. Schematic Diagram

__ RF/MD Section _ ...................... 29
4-5. Printed Wiring Boards

_ Audio Section _ ....................... 34
4-6. Schematic Diagram

_ Audio Section _ ....................... 39
4-7. Schematic Diagram

_ Digital Section _ ...................... 44
4-8. Printed Wiring Boards

_ Digital Section _ ..................... 49
4-9. Schematic Diagram

2. Control Section _ ...................... 53
4-10, Printed Wiring Borads

_ ControI Section _ ...................... 57
4-11. Printed Wiring Boards

- Power Section - ----------------------- 62
4-12. Schematic Diagram

_ Power Section - ....................... 67
5. EXPLODED VIEWS ~~~~~~~~~~~~~~~~~~~ 70
6. ELECTRICAL PARTS LIST ~~~~~~~~~~ 78

SA FETY~RELATED COMPONENT WARNINGI I

COMPONENTS IDENTIFIED BY MARK A OR 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 PUB-
LISHED BY SONY.