Sony TAVE-150 Service manual

TA-VE150

SERVICE MANUAL

This amplifier has the Dolby Surround system.
Manufactured under license from Dolby Laborato­ries Licensing Corporation.
“Dolby”, the double-D symbol a and “Pro Logic” are
trademarks of Dolby Laboratories Licensing Corpo­ration.

SPECIFICATIONS

Amplifier section

Power output

Stereo mode (DIN 1 kHz, 8 ohms)

25 W + 25 W

Surround mode (DIN 1 kHz, 8 ohms)

Front: 25 W/ch
Centre: 25 W
Rear: 25 W/ch

AEP Model

UK Model

Outputs VIDEO (AUDIO OUT):

Voltage 200 mV,
Inpedance 10 kilohms

WOOFER/AUDIO OUT:

Voltage: 2 V
Impedance: 1 kilohms

Muting Full mute
BASS BOOST +9 dB at 70 Hz

5.1 CH (DIN 1 kHz, 8 ohms)
INPUT/DVD mode Front: 25 W/ch

Centre: 25 W
Rear: 25 W/ch

Frequency response TV, VIDEO, DVD-2CH,

5.1 CH INPUT/DVD:
20 Hz-50 kHz ± 1 dB

Inputs

Sensitivity Impedance S/N

(weighting network, input level)

TV , VIDEO, DVD-2CH, 200 mV 50 82 dB*

5.1 CH INPUT/DVD kilohms (A, 150 mV)

MICROFILM

*’78 IHF

General

Power requirements 230 V AC, 50/60 Hz

Power consumption 115 W
Dimensions 430 × 274 × 64.5 mm

Mass (Approx.) 5.4 kg

Supplied accessories Remote controller

(remote) (1)
Size AA (R6) batteries (2)
Scart adaptor (1)

Design and specifications are subject to change without notice.

Specifications indicated are measured at 230 VAC, 50 HZ.

INTEGRATED AV AMPLIFIER

TABLE OF CONTENTS

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

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

3. TEST MODE.............................................................. 5

4. DIAGRAMS................................................................. 6

4-1. Notes for Printed Wiring Board

and Schematic Diagram .................................................. 7

4-2. Printed Wiring Board – MAIN Section – ...................... 11

4-3. Schematic Diagram – MAIN Section (1/2) –................ 13

4-4. Schematic Diagram – MAIN Section (2/2) –................ 15

4-5. Printed Wiring Boards – PANEL Section – .................. 17

4-6. Schematic Diagram – PANEL Section –....................... 19

4-7. Printed Wiring Boards – POWER Section – ................. 21

4-8. Schematic Diagram – POWER Section – ..................... 23

4-9. IC Pin Function Description ........................................... 25

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

6. ELECTRICAL PARTS LIST ............................... 29

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.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY A ! MARK ON THE SCHEMATIC
DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE
CRITICAL TO SAFE OPERATION. REPLACE THESE COMPO­NENTS WITH SONY PARTS WHOSE P ART NUMBERS APPEAR
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

– 2 –

Location of controls

— Front view —

SECTION 1

GENERAL

1

1 I /u button
2 3 STEREO indicator
3 NORMAL indicator
4 WIDE indicator
5 PHANTOM indicator
6 Remote sensor
7 Display window
8 SIMULATED indicator
9 C. STUDIO indicator
!º PRO LOGIC indicator

— Rear view —

2 3 4 5 6 7 8 9 !º !¡ !™ !£

!¢ !∞ !§ !¶ !• !ª

!¡ BASS BOOST indicator
!™ MUTING indicator
!£ MASTER V OLUME dial
!¢ CENTER MODE button
!∞ TV button
!§ VIDEO button
!¶ DVD, 2 CH button
!• 5.1 CH INPUT, DVD button
!ª SURROUND MODE button

1 2 3 4 5 6 7 8

1 5.1 CH INPUT/DVD jacks
2 DVD 2 CH jacks
3 VIDEO jacks
4 TV jacks

5 WOOFER jack
6 FRONT SPEAKERS terminals
7 REAR SPEAKERS terminals
8 CENTER SPEAKER terminals

– 3 –

SECTION 2

s

)

DISASSEMBLY

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

CASE, FRONT PANEL SECTION

1

two tapping screws

4

flat wire
(CNS301)

6

claw

7

front panel section

3

case

1

tapping screws

2

open the case

1

two tapping screw

4

flat wire
(CNS302)

MAIN BOARD

5

Remove the
MAIN board
to direction of
the arrow

1

A

1

connector
(CNS800)

5

three screws
(BVTP3 x8)

connector
(CNP802)

3

DC fan

1

connector
(CNS801)

A

6

claw

4

2

two screws
(BVTP3 x8)

six screws
(BVTP3 x8)

– 4 –

4

six screws
(BVTP3 x8

SECTION 3

TEST MODE

This equipment is provided with a test mode built in the micro­computer. The contents are described in the following.

[Initial Mode]

1.

Press I/u button while pressing both [VIDEO] and

[5.1CHINPUT,DVD] buttons simultaneously.

2. “INITIAL” is displayed on the fluorescent indicator tube, and
the status of the unit is set in the following.

• All Memory is clear.

• Center, rear level set to 0.

• Center mode set to Phantom.

• DBFB clear.

• Muting clear.

• Volume level set to min.

[Factory Mode]

1.

Press

I/

u

button while pressing three buttons of

[DVD,2CH]

2. Factory setting same as initial except center mode set to nor­mal using jog can set to volume max or min directly.

[FL Check Mode]

1. Press

2. Fluorescent indicator tube and LED are checked, “FINISH” is

buttons simultaneously.

displayed and the status of the unit is set back in normal con­dition.

, and

I/

u

button while both

[5.1CHINPUT,DVD]

[

CENTERMODE

simultaneously.

]

and

[TV]

[VIDEO]

,

[Gain Up Mode]

1. Press

2. “GAIN UP” is displayed on the fluorescent indicator tube and

3. T o e xit from this mode , press two b uttons in the same manner

[Version Mode]

1. Press

2. Version of its destination is displayed on the fluorescent indi-

I/

u

button while pressing

ton.

the rear is gained up 3 dB.

as step1.
“NORMAL” is displayed on the fluorescent indicator tube and
the status of the unit is set back in normal condition.

I/

u

button while pressing both

[

SURROUNDMODE

cator tube.

]

buttons simultaneously.

[

SURROUNDMODE

[

CENTERMODE

]

but-

]

and

– 5 –

• Circuit Boards Location

d

SECONDARY board

SECTION 4

DIAGRAMS

PRIMARY board

STANDBY board

POWER SW borad

MAIN boar

DISPLAY board

JOG board

– 6 –

4-1. NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM

B

These are omitted.

CE

Q

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.

¢

•

: internal component.

4

W or less unless otherwise

• 2 : nonflammable 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 .

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.
no mark : VIDEO

• V oltages 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 : FRONT/AUDIO IN
f : REAR
E : CENTER
j : WOOFER

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• p : parts mounted on the conductor side.

• b : Pattern from the side which enables seeing.

• Indication of transistor.

C
Q

B

E

These are omitted.

– 7 –

• Waveforms
– MAIN Board –

1 IC300 #¡ (OSC)

8 MHz

– DISPLAY Board –

1 IC201 #¢ (X1)

3.4 Vp-p

4.3 Vp-p

4.19 MHz

– 8 –

• IC Block Diagrams

– STANDBY Board –
IC950 NJM2103D

CR

1

2

VSC

+

–

OUTC

3

GND

4

– MAIN Board –
IC100 M62447SP

1

OUT4

2

OUT3
OUT2
OUT1

AVDD
SW IN
GND S

SR IN

SL IN

GND C

C IN
GND R1
GND R2
GND L1
GND L2

R IN

GND LR

L IN

NC

3
4

5
6
7
8

9
10
11
12
13
14
15
16
17
18

21 – 19

OUTPUT

PORT

VREF

Q
R S

MICRO
COMPUTER
INTERFACE

42
41
40
39
38
37

36

35
34

33

32

31
30
29

+

DVDD
CLK
DATA
LATCH
DGND
AGND

SW OUT

SR OUT
SL OUT

C OUT

R OUT

L OUT
AVSS1
AVSS2

NC

22 – 28

8

RESET

+

–

VSA

7

6

VSB/SESIN

V+

5

+

–

–

IC500 LC7822

30

IN

29
28

OUT

27
26
25

IN

24

OUT

23
22

ININ

21
20

OUT

19

VDD
RESET

18
17

S

16

VSS

OUT

OUT

OUT

VEE

1

IN

2
3
4
5

IN

6
7
8
9

IN

10
11
12

CE

13

DI

14

CL

15

CONTROL

LEVEL SHIFT

LATCH

SHIFT RESISTOR

– 9 –