Sony TA-FB740R User manual

AEP Model

UK Model

E Model

Australian Model

SPECIFICATIONS

SERVICE MANUAL

INTEGRATED STEREO AMPLIFIER

TA-FB740R

Amplifier section

DIN power output

100 W + 100 W (4 Ωat 1 kHz)

60 W + 60 W (8 Ωat 1 kHz)

Total harmonic distortion

Less than 0.008% (at 10 W output 1 kHz)

Frequency response

PHONO (20 Hz - 20 kHz): RIAA equalization curve

±0.5 dB

TUNER, SACD/CD, AUX, TAPE1/DAT, TAPE2/MD:

7 Hz - 300 kHz

–3

S/N (network A)

PHONO

TUNER, SACD/CD, AUX, TAPE1/DAT, TAPE2/MD:

105 dB

90 dB

Output voltage/impedance

REC OUT 1, 2: 150 mV, 1 kΩ

PHONES: 10 mW (at 8 Ω)

Speakers impedance

4 - 16 Ω, 8 - 16 Ω(SPEAKERS A+B)

Damping factor

500 (8 Ω, 1 kHz)

General

System

Power amplifier: Pure-complementary SEPP OCL

power amplifier with all stages directly coupled

Preamplifier: Low-noise, equalizer amplifier

Power requirements

230 V AC, 50/60 Hz

Power consumption

180 W

Dimensions (approx.) (w/h/d)

430 ×150 ×420 mm

incl. projecting parts and controls

Mass (approx.)

8.6 kg

Supplied accessories

•Remote commander (remote) (1) RM-S336

•Sony batteries R6 (size-AA) (2)

Design and specifications are subject to change without

notice.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE

WITH MARK 0ON 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 PUBLISHED BY SONY.

TABLE OF CONTENTS

1. GENERAL .......................................................................... 3

2. ELECTRICAL ADJUSTMENT ..................................... 4

3. DIAGRAMS

3-1. Circuit Boards Location ........................................................ 5

3-2. Schematic Diagram –Input Section –.................................. 6

3-3. Printed Wiring Board –Input Section –................................ 7

3-4. Schematic Diagram –Main Section –.................................. 8

3-5. Printed Wiring Board –Main Section –................................ 9

3-6. Schematic Diagram –Panel Section –................................ 10

3-7. Printed Wiring Board –Panel Section –............................. 11

3-8. Schematic Diagram –Power Section –............................... 12

3-9. Printed Wiring Board –Power Section –............................ 13

3-10. IC Block Diagrams ............................................................ 14

3-11. IC Pin Function ................................................................. 14

4. EXPLODED VIEW

4-1. Case Section ........................................................................ 15

4-2. Front Panel Section ............................................................. 16

4-3. Chassis Section ................................................................... 17

5. ELECTRICAL PARTS LIST ........................................ 18

Front Panel Descriptions

SECTION 1

GENERAL

This section is extracted from

instruction manual.

Rear Panel Descriptions

SPEAKERS

EON CONTROL

++––

TAPE1/DAT

REC OUT IN

IMPEDANCE USE 4–16Ω

A+B USE 8–16Ω

BI WIRE USE 4–16Ω

TAPE2/MD

REC OUT IN

AUX

SACD/

TUNER

PHONO

SIGNAL

GND

AC OUTLET

SWITCHED 100W MAX

42 3 51

0qa 9 8 7 6

1PHONO

2U(SIGNAL GND)

3SPEAKERS A/B

6Mains lead

7TAPE1/DAT

8TAPE2/MD

4EON CONTROL IN

5AC OUTLET

(Except UK, Singapore, Malaysia)

9AUX

0SACD/CD

qa TUNER

1PROTECTION indicator

2POWER button

3Remote sensor

4TAPE 1/DAT indicator

5TAPE 2/MD indicator

6AUX indicator

7CD indicator

8TUNER indicator

9PHONO indicator

10 INPUT SELECTOR knob

11 VOLUME knob

12 SUBSONIC button

13 SOURCE indicator

14 SOURCE DIRECT button and indicator

15 LOUDNESS button

16 TAPE MONITOR knob

17 BALANCE knob

18 TREBLE knob

19 BASS knob

20 SPEAKERS knob

21 PHONE jack

22 EON LINK button

23 EON LINK indicator

13 12

1415

1718

978465

SECTION 2

ELECTRICAL ADJUSTMENT

Bias Adjustment

NOTE:

1. Perform the adjustment after the unit has warmed up sufficiently.

2. Perform the bias adjustment if the power transistor has been

replaced.

Procedure:

1. Rotate fully the bias adjusting semi-fixed resistors (RV500,

RV600) to the MIN position (counterclockwise).

2. Connect a digital voltmeter to the CN500 and CN600.

1 pin 2 pin

–

CN500 (L-CH)

CN600(R-CH)

3. Set the slide regulator to 0V, and press the POWER button

(ON) on the set.

4. Raise gradually the slide regulator voltage up to the rated voltage.

5. At this time, confirm that the SP relay is turned on (it will click).

6. Adjust the RV500 and RV600 so that a reading of digital

voltmeter is 7 ± 1 mV.

7. Return the slidack to 0 V, and press the POWER button (OFF)

on the set.

Adjustment Location :

[MAIN BOARD] – COMPONENT SIDE –

CN600

(R-CH)

CN500

(L-CH)

RV600

Bias (R-CH)

RV500

Bias (L-CH)

DIGITAL

VOLTMETER

DIGITAL

VOLTMETE

SECTION 3

DIAGRAMS

3-1. CIRCUIT BOARDS LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING

BOARDS AND SCHEMATIC DIAGRAMS.

(In addition to this, the necessary note is printed

in each block.)

For schematic diagrams.

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolytics

and tantalums.

• All resistors are in Ωand 1/4W or less unless otherwise

specified.

•f: internal component.

•2: nonflammable resistor.

•5: fusible resistor.

•C: panel designation.

For printed wiring boards.

Note:

•X: parts extracted from the component side.

•Y: parts extracted from the conductor side.

•b: Pattern from the side which enables seeing.

•U: B+ Line.

•V: B– Line.

•H: adjustment for repair.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.

no mark : POWER ON

• Voltages are taken with aVOM (Input impedance 10 MΩ).

Voltage variations may be noted due to normal produc-

tion tolerances.

• Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc-

tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F: TUNER

WAVEFORM

IC902 1XOUT

• Indication of transistor

These are omitted

4MHz

3.8Vp-p

PANEL board

INPUT board

MAIN board

SP-TM board

PHONO boar

PS board

OUTLET board

(EXCEPT UK, SP, MY)

VOL board

SIRCS board

SIRCS SUB board

HP board

SP-SW board

•Abbreviation

G : German model

SP : Singapore model

MY : Malaysia model

AUS : Australian model

EE : East European model

Note: The components identified by mark 0or dotted line

with mark 0are critical for safety.

Replace only with part number specified.

TA-FB740R

3-2. SCHEMATIC DIAGRAM –INPUT SECTION –•See Page 14 for IC Block Diagrams.

(Page 8)

(Page 10)

C101–105

C201–205

2SD2525

470

R140

R240

82 1W

63V

2SB1640

,MY

JW12

MODEL

,MY

MODEL

16V

EXCEPT UK, SP, MY

Note: The components identified by mark 0or dotted line

with mark 0are critical for safety.

Replace only with part number specified.

TA-FB740R

91111

3-3. PRINTED WIRING BOARD –INPUT SECTION –•See page 5 for Circuit Boards Location.

Ref. No. Location

•Semiconductor

Location

(INPUT Board)

D100 D-5

D101 D-4

D102 D-4

D103 C-4

D104 B-4

D105 A-4

D106 A-4

D107 D-5

D108 C-7

D140 C-9

D240 C-9

Q100 C-6

Q101 C-6

Q102 C-6

Q103 C-7

Q104 C-7

Q105 C-7

Q140 C-9

Q240 D-9

Ref. No. Location

•Semiconductor

Location

(PHONO Board)

D170 B-1

IC150 A-2

Q150 A-3

Q151 A-3

Q250 B-3

Q251 B-3

TA-FB740R

3-4. SCHEMATIC DIAGRAM –MAIN SECTION –•See page 14 for IC Block Diagrams.

EXCEPT UK, SP, MY

EXCEPT

UK, SP, MY

TA-FB740R

3-5. PRINTED WIRING BOARD –MAIN SECTION –•See page 5 for Circuit Boards Location.

Ref. No. Location

•Semiconductor

Location

(SP-TM Board)

D511 E-3

D512 E-3

D513 F-4

D700 A-2

D701 A-2

D702 B-2

IC700 B-3

Q700 A-4

Q701 C-2

D500 C-11

D501 C-11

D502 C-11

D503 D-11

D504 D-11

D505 D-10

D506 D-5

D507 C-6

D600 F-11

D601 F-11

D602 F-11

D603 F-11

D604 F-11

D605 F-10

D606 E-5

D607 D-5

D703 F-5

IC701 E-10

Q500 C-12

Q501 D-12

Q502 D-12

Q503 D-12

Q504 D-12

Q505 D-12

Q506 C-10

Q507 D-11

Q508 D-11

Q509 D-11

Q510 D-10

Q511 D-9

Q512 D-9

Q513 C-6

Q514 C-9

Q515 C-7

Q516 D-6

Q600 F-12

Q601 F-12

Q602 F-12

Q603 E-12

Q604 F-12

Q605 F-12

Q606 F-10

Q607 F-11

Q608 F-11

Q609 F-11

Q610 F-10

Q611 F-9

Q612 F-9

Q613 F-9

Q614 F-6

Q615 F-7

Q616 E-5

Q702 F-5

Ref. No. Location

•Semiconductor

Location

(MAIN Board)

10 10

TA-FB740R

3-6. SCHEMATIC DIAGRAM –PANEL SECTION –•See page 5 for Waveforms. •See page 14 for IC Block Diagram. •See page 14 for IC Pin Function.

(Page 6)

(Page 8)

(Page 6)

(Page

(Page 8)

0.01

R807-810

SACD/CD

390: AEP,G,EE,CIS,AUS

330: UK,SP,MY

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