Sony STR-DE135 Guida rapida

MICROFILM

SERVICE MANUAL

FM STEREO/FM-AM-RECEIVER

US Model

AEP Model

UK Model

STR-DE135

SPECIFICATIONS

Photo: US model

Audio power specifications (US model)

POWER OUTPUT ANDTOTAL HARMONIC DISTORTION

With 8-ohm load, both channels driven, from 20 – 20,000 Hz,

rated 100 watts per channel minimum RMS power, with no

more than 0.09 % total harmonic distortion from 250 milli-

watts to rated output.

Amplifier section

Stereo mode (8 ohms at 20 Hz – 20 kHz less than

0.09 % total harmonic distortion)

100 W + 100 W (US model)

(DIN 1 kHz, 4 ohms)

60 W + 60 W (AEP, UK models)

Frequency response TV/SAT, CD, MD/TAPE, VIDEO

(US model)

TV/LD, CD, MD/TAPE, VIDEO

(AEP, UK models)

10 Hz – 50 Hz ± 1 dB

Inputs Sensitivity Impedance S/N

CD,

MD/TAPE, 150 mV 50 78 dB

TV/SAT, kilohms

VIDEO (US model)

Sensitivity Impedance S/N

CD,

MD/TAPE, 150 mV 50 78 dB

TV/LD, kilohms

VIDEO (AEP, UK models)

outputs MD/TAPE REC OUT:

Voltage: 150 mV,

impedance: 10 kilohms

VIDEO AUDIO OUT:

Voltage: 150 mV,

impedance: 10 kilohms

PHONES: Accepts low and high

impedance headphones

Muting Full mute

BASS BOOST + 10 dB at 70 Hz

TONE ± 8 dB at 100 Hz and 10 kHz

Tuner Section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 87.5 – 108.0 MHz

Antenna terminals 75 ohms, unbalanced

Intermediate frequency 10.7 MHz

Sensitivity Mono: 18.3 dBf, 4.5 µV

Stereo: 38.3 dBf, 45 µV (US model)

Mono: 18.3 dBf, 2.2 µV/75 ohms

Stereo: 38.3 dBf, 22.5 µV/75 ohms

(AEP, UK models)

Usable sensitivity 11.2 dBf, 2 µV (IHF) (US model)

11.2 dBf, 1 µV/75 ohms (IHF)

(AEP, UK models)

S/N Mono: 76 dB

Stereo: 70 dB

Harmonic distortion at 1 kHz Mono: 0.3 %

Stereo: 0.5 %

Separation 45 dB at 1kHz

Frequency response 30 Hz – 15 kHz dB

Selectivity 60 dB at 400 kHz

AM tuner section

Tuning range 10 kHz interval*

530 – 1710 kHz

9 kHz interval

531 – 1710 kHz (US model)

531 – 1602 kHz (AEP, UK models)

+0.5

–2

– Continued on next page –

STR-DE135

5-3. SCHEMATIC DIAGRAM – MAIN Board (1/2) – • See page 10 for Waveform. •See page 21 for IC Block Diagrams.

– 13 – – 14 –

(Page

25)

(Page

25)

(Page 20)

(Page 19)

(Page

25)

The components identified by mark !or dotted

line with mark !are critical for safety.

Replaceonlywithpartnumberspecified.

STR-DE135

– 19 – – 20 –

5-5. SCHEMATIC DIAGRAM – PANEL Section – • See page 10 forWaveform. • See page 22 for IC Block Diagram.

100k

(Page 14)

(Page

13)

The components identified by mark !or dotted

line with mark !are critical for safety.

Replaceonlywithpartnumberspecified.

STR-DE135

– 21 – – 22 –

• IC Block Diagrams

– MAIN Board –

IC1 BU1922 (AEP, UK models)

IC401 LC78212

QUALITY BIT

GENERATOR

DEFFERENTIAL

DECODER

BIPHASE

SYMBOL

DECODER

OSCILLATOR

AND

DIVIDER

57kHz

BANDPASS

(8th ORDER)

CONTAS LOOP

VARIABLE AND

FIXED DIVIDER

REFERENCE

VOLTAGE

ANTI-

ALIASING

FILTER

CLOCKED

COMPARATOR

TEST LOGIC AND OUTPUT

SELECTOR SWITCH

RECONSTRUCTION

FILTER

141516 13 12 11 10 9

321 4 5 6 7 8

CLOCK REGENERATION

AND SYNC

VP1

RDCL

TS7

OSCO

OSCI

DDD

SSD

TEST

TSTL

QUAL

RDDA

Vref

MUX

DDA

SSA

CIN

SCOUT

CONTROL

LATCH

SHIFT RESISTOR

LEVEL SHIFT

VEE

OUT

VSS

RESET

VDD

OUT

ININ

OUT

IC950 NJM2103D

V+

VSB/SESIN

VSA

RESET

GND

OUTC

VSC

VREF

+–

–+

–

R S

IC701 µPC2581V

235

46798

MUTE

+ VOUT1

– VOUT1

COMP1

MF1

IN1

GND

IN2

NF2

COMP2

– VOUT2

+ VOUT2

VCC1

VCC2

VEE

PROTECTOR

BIAS CIRCUIT

REG DRIVE PRE

DRIVE

10 12 13 1514

DRIVE

PRE

DRIVE

– DISPLAY Board –

IC202 BA6208

1 2 3 4 5 6 7 89

OUTPUT 2

Vcc

GND

INPUT 2

INPUT 1

MOTOR

DRIVE

MOTOR

DRIVE

REG

SWITCH

OUTPUT1

– 25 –

5-7. SCHEMATIC DIAGRAM – MAIN Board (2/2)/SPK SWITCH Board/SECONDARY Board/

PRIMARY Board/STANDBYTRANS Board –

STR-DE135

R742

1.2k 1/2W

R792

1.2k 1/2W

(Page 14)

The components identified by mark !or dotted

line with mark !are critical for safety.

Replaceonly withpartnumber specified.

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