Sony TAFA-30-ES Service manual

TA-F A30ES

SERVICE MANUAL

Photo: GOLD model

SPECIFICATIONS

System

Power Amplifier: Pure-complementary SEPP MOS FET power amplifier with all stages directly coupled Preamplifier: Low-noise, high-gain equalizer amplifier Power section: Large-capacity power supply advanced STD

Rated output

4 ohms, 120 W + 120 W (DIN 0.7%, 1 kHz) 8 ohms, 80 W + 80 W (DIN 0.7%, 1 kHz)

Speaker Impedance

4 to 16 ohms

Output bandwidth (8 ohms)

10 Hz to 100 kHz (at 40 W output, and high-frequency distortion rate of 0.08%)

Total har monic distortion

0.008% (at 8 ohms, 10 W output)

Damping factor

100 (8 ohms, 1 kHz)

Intermodulation (1M) distortion (60 Hz : 7 kHz = 4 : 1)

0.008% (8 ohms)

Throughrate

125 V/µ sec, 250 V/µ sec (Inside)

Residual noise

Less than 100 µV (network A)

Equalizer deviation

PHONO MM: 20 Hz to 20 kHz, ± 5 dB

Frequency response

TUNER, CD, AUX, TAPE1/DAT, TAPE2/MD: 7 Hz to 100 kHz dB

S/N

PHONO MC: 78 dB (network A, 0.5 mV) TUNER, CD, AUX, TAPE1/DAT, TAPE2/MD: 105 dB

+0 –3

MM: 95 dB (network A, 5 mV)

AEP Model

UK Model

E Model

Australian Model

Chinese Model

Inputs

Input sensitivity and impedance

PHONO MC: 0.17 mV, 100 ohms

MM: 2.5 mV, 50 kilohms TUNER, CD, AUX, TAPE1/DAT, TAPE2/MD: 150 mV, 20 kilohms

Maximum input capability (1 kHz)

PHONO MC: 9 mV

MM: 150 mV

Outputs

Output level/impedance

REC OUT 1, 2: 150 mV, 1 kilohm PHONES: 10 mW (at 8 ohms)

Tone controls

BASS (100 Hz): ± 7 dB TREBLE (10 kHz): ± 7 dB

General

Power requirements

230 V AC, 50/60 Hz

Power consumption

220 W

Dimensions (approx) (w/h/d)

430 × 150 × 415 mm incl. projecting parts and controls

Mass (approx)

11.0 kg

Supplied accessories

Remote commander (remote ) RM-S326 (1) Sony batteries R6 (size-AA) (2)

Design and specifications are subject to change without notice.

MICROFILM

INTEGRATED STEREO AMPLIFIER

TABLE OF CONTENTS

1. GENERAL

Location of Controls ....................................................... 3

2. DISASSEMBLY ......................................................... 4

3. ELECTRICAL ADJUSTMENTS......................... 6

4. DIAGRAMS

4-1. Notes for Printed Wiring Boards

and Schematic Diagrams ................................................ 8

4-2. Printed Wiring Boards – INPUT Section – ................... 9

4-3. Schematic Diagram – INPUT Section –......................... 11

4-4. Printed Wiring Boards – MAIN Section – .................... 13

4-5. Schematic Diagram – MAIN Section –.......................... 15

4-6. Printed Wiring Boards – PANEL Section – .................. 17

4-7. Schematic Diagram – PANEL Section – ....................... 19

4-8. Printed Wiring Boards – POWER Section – ................. 21

4-9. Schematic Diagram – POWER Section – ..................... 23

4-10. IC Pin Function Description ........................................... 26

5. EXPLODED VIEWS ................................................ 27

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

– 2 –

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 PUBLISHED BY SONY.

LOCATION OF CONTROLS

Front Panel

SECTION 1

GENERAL

56 7 8 9 !º !¡ !™

1 U (Power) switch and indicator 2 TAPE MONITOR switch and indicator 3 INPUT SELECTOR switch and indicator 4 ATTENUATOR control 5 PHONES jack 6 Remote control sensor 7 SPEAKERS switch 8 BASS control 9 TREBLE control !º BALANCE control !¡ SOURCE DIRECT switch and indicator !™ MUTING swith and indicator

Rear Panel

1 PHONO 2 CARTRIDGE MM/MC 3 SIGNAL GND y 4 Mains lead 5 SPEAKERS MAIN/BI-WIRE 6 TAPE 1/DAT 7 TAPE 2/MD 8 AUX 9 CD !º TUNER

– 3 –

(

)

SECTION 2

DISASSEMBLY

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

CASE, FRONT PANEL

two screws (CASE 3 TP2)

three screws

front panel

1

screw (CASE 3 TP2)

two screws (CASE 3 TP2)

case (413235)

knob (SEL)

knob (VOL)

SUB PANEL SECTION

two screws (3 × 8)

sub panel section

connector (CN503)

four screws

connector (CN2)

connector (CN700)

connecto (CN103)

four screws (3 × 8)

two screws (3 × 8)

– 4 –

connector

CN102

connector (CN303)

three screws (3 × 8)

two screws (3 × 8)

MAIN BOARD

four screws (3 × 8)

main board

four screws (3 × 8)

three screws (3 × 8)

four screws (3 × 8)

connector (CN752)

three screw (BV/RING)

connector (CN104)

connector (CN751)

– 5 –

SECTION 3

ELECTRICAL ADJUSTMENTS

Bias Adjustment

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 3 pin

CN500 + – CN600 – +

3. Set the slidack to 0 V, and press the U button (ON) on the

set.

4. Raise gradually the slidack voltage up to the rated voltage

(230 V).

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

click), and at the same time, the LED on the U button changes from red to green.

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

meter is 10 mV ± 2 mV.

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

the set.

Adjustment Location:

MAIN Board (Component Side)

CN500

C720

RV500

Q507

C721

RV600

Q607

113

CN600

– 6 –

SECTION 4

DIAGRAMS

• Circuit Boards Location

POWER LED board

HP board

MAIN board

PS board

SP TM board

PHONO board

4-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

(In addition to this, the necessary note is printed in each block.)

Note on Schematic Diagram:

• 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 Ω and 1/ specified.

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

NOTE: The components identified by mark ! or dotted line

with mark ! are critical for safety. Replace only with part number specified.

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark: POWER ON

• Voltages are taken with a V OM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

• Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances.

• Circled numbers refer to waveforms.

• Signal path. K: TUNER

W or less unless otherwise

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• b : Pattern from the side which enables seeing.

• Indication of transistor.

These are omitted.

PANEL board

LED board

SW board

INPUT board

VOL board

– 7 – – 8 –

TA-FA30ES

4-2. PRINTED WIRING BOARDS – INPUT Section – • See page 7 for circuit Boards Location.

(Page 14)

• Semiconductor Location

Ref. No. Location

D101 C-6 D103 D-4 D104 D-3 D105 D-3 D106 C-3 D107 B-3 D108 A-3 D109 A-3 D110 D-4 D151 C-9 D251 C-9

Ref. No. Location

Q100 C-5 Q101 C-5 Q102 C-5 Q103 C-6 Q104 C-6 Q105 C-6 Q152 C-9 Q252 C-9

(Page 18)

(Page 17)

– 9 –

– 10 –

+ 18 hidden pages