Sony TAFLX-9-W Service manual

TA-FLX9W

SERVICE MANUAL

Ver 1.0 2004.07

TA-FLX9W is the amplifier section in DHC-FLX9W.

SPECIFICATIONS

Amplifier section:

Power ouput 40 watts/ch

1)

Depending on the sound field settings and the source,
there may be no sound output.

2)

Measured under AC 127, 240 V, 50/60 Hz
(Saudi Arabian model only)
Measured under AC 120, 240 V, 50/60 Hz
(except for Saudi Arabian model)

G

eneral

Power requirements
Saudi Arabian model: 120 – 127 V or 220 – 240 V

Thailand model: 220 – 240 V AC, 50/60 Hz
Other models: 110 – 120 V or 220 – 240 V

Power consumption
Dimensions (w/h/d)

Mass

(6 ohms at 1 kHz, 0.7%
THD)
60 watts/ch
(6 ohms at 1 kHz, 10%
THD)

AC, 50/60 Hz
Adjustable with voltage
selector

AC, 50/60 Hz
Adjustable with voltage
selector
92 watts
Approx. 95 × 156 ×
241 mm
Approx. 3.1 kg

E Model

2)

1)

2)

9-877-903-01

2004G05-1
© 2004.07

Design and specifications are subject to change
without notice.

REAR AMPLIFIER

Sony Corporation

Home Audio Company
Published by Sony Engineering Corporation

TA-FLX9W

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

TABLE OF CONTENTS

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

2. DISASSEMBLY

2-1. Disassembly Flow ........................................................... 4

2-2. Case (Rear Amplifier) ..................................................... 4

2-3. VS Board ......................................................................... 5

2-4. RX Board......................................................................... 5

2-5. MAIN Board.................................................................... 6

3. DIAGRAMS

3-1. Block Diagram ................................................................ 7

3-2. Printed Wiring Board – RX Board – .............................. 9

3-3. Schematic Diagram – RX Board (1/2) – ........................ 10

3-4. Schematic Diagram – RX Board (2/2) – ........................ 11

3-5. Printed Wiring Boards – MAIN Section – ..................... 12

3-6. Printed Wiring Boards – POWER SUPPLY Section –... 13

3-7. Schematic Diagram – MAIN Section –.......................... 14

4. EXPLODED VIEWS

4-1. Front Panel Section ......................................................... 19

4-2. Chassis Section................................................................ 20

5. ELECTRICAL PARTS LIST................................ 21

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PAR TS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.

2

SECTION 1

GENERAL

LOCATION OF CONTROLS

ALPHABETICAL ORDER

A – Z

ON LINE (indicator) 3
ON/STANDBY (indicator) 2
POWER 1

12

POWER

ON/STANDBY

ON LINE

TA-FLX9W

This section is extracted from
instruction manual.

3

3

TA-FLX9W

• This set can be disassembled in the order shown below.

2-1. DISASSEMBLY FLOW

SET

2-2. CASE (REAR AMPLIFIER)

(Page 4)

2-3. VS BOARD

(Page 5)

2-4. RX BOARD

(Page 5)

2-5. MAIN BOARD

(Page 6)

SECTION 2

DISASSEMBLY

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

2-2. CASE (REAR AMPLIFIER)

2

1

four flat head screws

2

case (rear amplifier)

3

1

four flat head screws

4

2-3. VS BOARD

t

2

screw
(BVTP 3

×

8)

3

RX board

1

wire (flat type) (17 core)
(CN7403)

2

screw
(BVTP 3

×

8)

2

two screws
(BVTP 3

×

8)

4

insulation shee

TA-FLX9W

2-4. RX BOARD

3

VS board
(except Thai model)

1

connector
(CN972)

1

connector
(CN971)

5

TA-FLX9W

2-5. MAIN BOARD

1

connector
(CN903)

2

screw
(BVTP 3

×

8)

3

MAIN board

2

three screws
(BVTP 3

×

8)

1

three connectors
(CN102, CN104, CN105)

6

3-1. BLOCK DIAGRAM

TA-FLX9W

SECTION 3

DIAGRAMS

J7401

DIR-R1

IF +5V

LPF

X7401

12.288MHz

RF DEMODULATOR,

A/D CONVERTER

10

ADVIN

OSCO

4043OSCI

IC7402

DAOUT

LRCK

BCK
APX

CSOD

DTVALID

SRDT

SWDT

SCLK

XSCEN

XRST

TM101

SPEAKERS

IC7407

D/A CONVERTER

60
59
54
31

IC7405

REAR AMP CONTROLLER

33
61
34

35
37
36
13

IC7411

LEVEL
SHIFT

IC7410

LEVEL
SHIFT

16 CSOD
14 DTVALID

53 DIAT_SRDT
52 DIAT_SWDT
51 DIAT_CK
54 XSCEN
28 XRST

DAC_DATA

DAC_CLK
DAC_LAT

VOLIC_DATA

VOLIC_CLK

MUTE

FANON

PROTECT

SPRY

26
25
27

34
33

41

45

15

31

2

DATA

3

LRCK

1

BCK

16

SCK

13

MD

14

MC

15

ML

VOL

VOR

7

8

IC7408

LINE
AMP

IC7409

ELECTRICAL VOLUME

1

VIN1

VOUT1

8

VIN2

VOUT2

DATA

CLOCK

4

5

2

7

MUTING

Q7406

MUTING CONTROL

Q7403, 7411

MUTING

Q7405

IC101

POWER AMP

IC102

POWER AMP

+

LEVEL

DETECT

Q108, 109

B+ SWITCH

Q112

+

OVER CURRENT

DETECT

Q105 – 107

D102

REGULATOR

Q113

-1

-2

RELAY
DRIVE

Q104

RY101

IMPEDANCE

USE 8Ω

(+)

REAR

L

(–)

(+)

REAR

R

(–)

• SIGNAL PATH

: AUDIO

D201

ON/STANDBY

D202

ON LINE

X7402

12.5MHz

LED DRIVE

Q101

LED DRIVE

Q102

LED DRIVE

Q103

D114

+6V

22

23

38

36

37

X0

X1

LED_ON

LED_RED

LED_DIAT

FAN1

FAN2

RST

STOP

FAN MOTOR

DRIVE

Q110

42

43

44FAN_CLK

+3.3V

19

D/A B+

E.VOL B+

47PSAVE

+1.5V

+2.5V

39DIAT_OFF

32

35PWR_RY

RESET SIGNAL

GENERATOR

IC7403

B+ SWITCH

Q7401, 7402

+1.5V

REGULATOR

IC7404

+2.5V

REGULATOR

IC7401

IF +5V

+3.3V

REGULATOR

IC7406

B+ SWITCH

Q7407, 7408

B+ SWITCH

Q7409, 7410

+5V

+6V

+6V

REGULATOR

IC103

+5V

REGULATOR

IC104

AC DETECT

Q901

D111

POWER AMP

POWER AMP

D110

D906, 907

B+

B–

FAN MOTOR

Q111, 117

RECT
D104

RECT

D106 – 109

RECT

D902 – 905

DRIVE

PROTECT

POWER TRANSFORMER

(MAIN)

POWER TRANSFORMER

(SUB)

Q114

T901

T902

F901

M101

MM

(FAN)

(EXCEPT Thai model)

VOLTAGE

SELECTOR

(Thai model)

MAIN POWER

RELAY DRIVE

S971

RY901

ON/OFF

Q902

F971

S951

POWER

(AC IN)

TA-FLX9W

77

TA-FLX9W

• Note for Printed Wiring Boards and Schematic Diagrams

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

f

•

• : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.

• Indication of transistor.

: internal component.

C
Q

B

E

These are omitted.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

• f : internal component.

• 2 : nonflammable resistor.

• C : panel designation.

Note: The components identified by mark 0 or dotted line

with mark 0 are critical for safety.
Replace only with part number specified.

• A : B+ Line.

• B : B– Line.

• Voltages and waveforms are dc with respect to ground

under no-signal (detuned) conditions.
Note: When mesurering voltages and waveforms, con-

nect with HCD-FLX9W (states: tuner).

no mark : TUNER

∗ : Impossible to measure

• Voltages are taken with a VOM (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.

F : AUDIO

• Abbreviation
TH : Thai model

4

W or less unless otherwise

• Circuit Board Location

PSW board

LED board

STBY board

MAIN board

VS board
(EXCEPT Thai)

RX board

• Waveforms
– RX Board –

IC7402 rd (OSCO)

1

1 V/DIV, 50 ns/DIV

IC7405 wd (X1)

2

1 V/DIV, 50 ns/DIV

2.9Vp-p

81 ns

3.3 Vp-p

80.5 ns

TA-FLX9W

88