SONY STRDE135 - Owner's Manual Immediate Download

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 AND TOTAL 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

78 dB

TV/SAT,

kilohms

VIDEO

(US model)

Sensitivity

Impedance

S/N

CD,

MD/TAPE,

150 mV

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

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

Continued on next page

TABLE OF CONTENTS

SERVICING NOTES ............................................... 3

GENERAL ................................................................... 4

DISASSEMBLY ......................................................... 5

TEST MODE ............................................................... 7

DIAGRAMS

5-1. Note for Printed Wiring Boards and

Schematic Diagrams .......................................................

5-2. Printed Wiring Board MAIN Board ........................ 11

5-3. Schematic Diagram MAIN Board (1/2) .................. 13

5-4. Printed Wiring Boards

DISPLAY Board/KEY Board/VOLUME Board/

TONE Board/POWER SWITCH Board ................... 15

5-5. Schematic Diagram

PANEL Section ......................................................... 19

5-6. Printed Wiring Boards

PANEL Section ......................................................... 23

5-7. Schematic Diagram

MAIN Board (2/2)/SPK SWITCH Board/

SECONDARY Board/PRIMARY Board/

STANDBY TRANS Board ....................................... 25

5-8. IC Pin Function Description ........................................... 26

EXPLODED VIEWS ................................................ 28

ELECTRICAL PARTS LIST ............................... 31

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK

! OR DOTTED

LINE WITH MARK

! 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.

Antenna

Loop antenna

Intermediate frequency

450 kHz

Usable sensitivity

50 dB/m (at 1,000 kHz)

S/N

54 dB (at 50 mV/m)

Harmonic distortion

0.5 % (50 mV/m, 400Hz)

Selectivity

At 10 kHz: 40 dB

At 9 kHz: 35 dB (US model)

35 dB (AEP, UK models)

* You can change the AM tuning interval between 9 kHz and 10kHz.

After tuning in any AM station, turn off the receiver. Hold down the

PRESET TUNING + button and press the

1/u (power) button. All pre-

set stations will be erased when you change the interval. To reset the

interval, repeat the procedure.

(US model)

General

System

Tuner section:

PLL quartz-locked digital

synthesizer system

Preamplifier section:

Low-noise NF type equalizer

Power amplifier section:

Pure-complementary SEPP

Power requirements

120 V AC, 60 Hz (US model)

230 V AC, 50/60 Hz

(AEP, UK models)

Power consumption

155 W (US model)

135 W (AEP, UK models)

AC outlets

1 switched, total 120 W/1A Max

(US, UK models)

switch 100 W max (AEP model)

Dimensions

430

× 144 × 306 mm

(17

× 56/8 × 124/8 inches)

Mass (Approx.)

8.1 kg (17 lb 13 oz) (US model)

6.7 kg (AEP, UK models)

Supplied accessories

FM wire antenna (1)

AM loop antenna (1)

Remote commander (remote) (1)

Size AA (R6) batteries (2)

Specifications indicated are measured at 230 V AC, 50Hz.

(AEP, UK models)

Design and specifications are subject to change without notice.

SECTION 1

SERVICING NOTES

MODEL IDENTIFICATION

Rear view

12345

PART No.

MODEL

PART No.

US model

4-216-802-0

AEP model

4-216-802-1

UK model

4-216-802-2

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow-

ing safety check before releasing the set to the customer:

Check the antenna terminals, metal trim, "metallized" knobs,

screws, and all other exposed metal parts for AC leakage.

Check leakage as described below.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and

from all exposed metal parts to any exposed metal part having a

return to chassis, must not exceed 0.5 mA (500 microampers.).

Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers' instructions to use these

instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The "limit" indica-

tion is 0.75 V, so analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-

amples of a passive VOM that is suitable. Nearly all battery

operated digital multimeters that have a 2 V AC range are suit-

able. (See Fig. A)

Fig. A.

Using an AC voltmeter to check AC leakage.

1.5 k

0.15

µF

voltmeter

(0.75 V)

To Exposed Metal

Parts on Set

Earth Ground

SECTION 2

GENERAL

1 I/u button

2 TUNING +, buttons

(US model)

TUNING/CHAR +, buttons

(AEP, UK models)

3 NAME button

(AEP, UK models)

4 PRESET/TUNING +, buttons

(US model)

PRESET/PTY SELECT +, buttons

(AEP, UK models)

5 DISPLAY button (AEP, UK models)

6 RDS PTY button

(AEP, UK models)

7 AM button

(US model)

RDS EON button

(AEP, UK models)

Location of controls

· Front view

8 FM button

(US model)

FM/AM button

(AEP, UK models)

9 VIDEO button

0 TV/SAT button

(US model)

TV/LD button

(AEP, UK models)

!¡ MD/TAPE button

!TM BASS BOOST button and indicator

!£ SPEAKERS A, B ON/OFF buttons

!¢ PHONES jack

! SHIFT button

!§ Numeric buttons

!¶ DIRECT button

!· MEMORY button

(US model)

MEMORY/ENTER button

(AEP, UK models)

!ª FM MODE button

@º TUNER button

@¡ CD button

@TM VOLUME control

@£ MUTING button and indicator

@¢ TREBLE control

@ BASS control

@§ BALANCE control

345

8 9 0 !¡

!TM

!£

!¢

!§!¶ !· !ª

@º @¡

@TM

@£

@¢

@§

· Rear view

CASE

FRONT PANEL SECTION

Note: Follow the disassembly procedure in the numerical order given.

SECTION 3

DISASSEMBLY

1 two tapping screws

1 tapping screw

2 case

1 two tapping screws

2 three connectors

(CNP702 704)

3 screw

(BVTP3

× 8)

4 claw

5 front panel

section

3 four screws

(BVTP3

× 8)

4 claw

1 two flat wires

(CNS204, CNP404)