Sony dtx 10 service manual

Page 1

DTX-lll

ERVICE MANUAL

Photo : E model

AEP Model
UK Model
E Model

Digital AudioTape

Model Name Using Similar Mechanism New Mechanism

Tape Transport Mechanism Type MG-DTXlO-36

SPECIFICATIONS

Digital audio tape section

Head Rotary head

Playback 120 minutes (Standard Play)
240 minutes (Long Play) with
DT~120

Tape speed 615 mm/s (Standard Play)

4075 mm/s (Long Play)
Double Reed Solomon code
48 kHz. 44.1 kHz. 32 kHz
Standard:

16-bit linear
Long play mode:

12bit non-linear
Below measurable limit

Error correction
Sampling ltequency
D/A conversion

Wowand tlutter
Frequency response 5»22.000 Hz
Signal-to-noise ratio More than 90 dB
Total harmonic distortion

0.01%
Operating temperature

0 - 50C (32-122°F)

Tuning section

FM

Tuning range
Intermediate lrequency
10] kHz

External antenna connector
12 dBl (75 ohms)

87.5-108 MHz

Antenna terminal
Usable sensitivity
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo), 70 dB (mono)
Harmonic distortion at 1 kHz

0.5% (stereo), 0.3% (mono)
Separation 35 dB at 1 kHz
Frequency response 30-15000 Hz
Capture ratio 2 dB

Tuning range

MW: 5: - L602 kHz

LW: 153-281 kHz
Intermediate trequency

450 kHz
External antenna connector
AM: 35 thE modal)

Mw: asuv
LW: 70W }(AEP/G/Ul< nodal)

Antenna terminal
Sensitivity

AM:530-l,620 kHz(at iOkHz step)
5314.602 kHztat 9ka step)

}(AEF/G/UK model)

General

Power requirements 12 V DC car battery (negative
ground)

Output lead Power antenna relay control
lead

Bass :to dB at 100 Hz
Treble :10 dB at 10 kHz

Tone controls

Dimensions Approx 173 x 50 x 153 mm
(7/. x 2 x 6% inches) (w/h/d)
not incl. projecting parts and
controls

Weight Approx, 1.3 kg (2 lo 14 oz)

Supplied accessories Mounting hardware (1 set)
Installation/connections
manual

Connecting cord RK-C77

(t m. phono plugs to phono
plugs)

Cleaning cassette DT-tOCL

Optional accessories

Design and specifications subject to change without
notice

)(E model)

FM/AM DAT PLAYER
SONE

Page 2

fl DTX-1 0

TABLE OF CONTENTS

Sect-ion Title M
SECTION 1. GENERAL -------- ' r ----- 3
SECTION 2. DISASSEMBLY ---------- ' 9
SECTION 3. INSTALLATION' --------- H
SECTION 4. ADJUSTMENTS

4'1. Mechanical Adjustments - ------- 18

4-2. Electrical Adjustments - - - - - - -21
SECTION 5. DIAGRAMS

5-1. Block Diagram --------- - - 25

5-2. IC Pin Functions ------ - - - -29

5-3. Waveforms. . . . . ........ . . 39

5-4. Printed Wiring Boards

-Disita|/Servo Section- ----- - - - ~40

5-5. Schematic Diagram

-Disital/Servo Section- - - 43

5-6. Printed Wiring Boards

-Audio Section- ......... . . . .43

5-7. Schematic Diagram

-Audio Section- - - - . ......... 53
SECTION 6. EXPLODED VIEWS

6-1. Front Panel,Cover Assembles- - - - - -5l

6-2. Chassis Assemble ----------- 58

6-3, MD Section) ....... . ..... 59

6-4. MD Section(2) ........ . . . . .50

6-5. MD Section(3) ..... . ....... 61

6-6. MD Section(4) .......... . '62

67. MD Section(5)- - . . . . . . . .53
SECTION 7 ELECTRICAL PARTS LIST -------- 64

Flexible Circuit Board Repairing

0Keep the temperature of the soldering iron around

270'C during repairing.

0 Do not touch the soldering iron on the same con-

ductor of the circuit board (Within 3 times).

0 Be careful not to apply force on the conductor when

soldering or unsoldering. _

Notes on chip component replacement

I Never reuse a disconnected chip component.

0 Notice that the minus side of a tantalum capacitor

may be damaged by heat.