Sony TA-VE150 User manual

MICROFILM
SERVICE MANUAL
INTEGRATED AV AMPLIFIER
AEP Model
UK Model
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
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)
*’78 IHF
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
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 230VAC, 50 HZ.
SPECIFICATIONS
TA-VE150
This amplifier has the Dolby Surround system.
Manufactured under license from Dolby Laborato-
ries Licensing Corporation.
“Dolby”, the double-D symbol aand “Pro Logic”are
trademarks of Dolby Laboratories Licensing Corpo-
ration.

– 2 –
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 dam-
aged by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY A !MARK ONTHE SCHEMATIC
DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE
CRITICAL TO SAFE OPERATION. REPLACE THESE COMPO-
NENTSWITH SONY PARTSWHOSE PART NUMBERS APPEAR
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

– 3 –
SECTION 1
GENERAL
1I /ubutton
23 STEREO indicator
3NORMAL indicator
4WIDE indicator
5PHANTOM indicator
6Remote sensor
7Display window
8SIMULATED indicator
9C. STUDIO indicator
!º PRO LOGIC indicator
15.1 CH INPUT/DVD jacks
2DVD 2 CH jacks
3VIDEO jacks
4TV jacks
Location of controls
— Front view —
— Rear view —
1
!¢ !∞ !§ !¶ !• !ª
2 3 4 5 6 7 8 9 !º !¡ !™ !£
!¡ BASS BOOST indicator
!™ MUTING indicator
!£ MASTER VOLUME 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
5WOOFER jack
6FRONT SPEAKERS terminals
7REAR SPEAKERS terminals
8CENTER SPEAKER terminals

– 4 –
CASE, FRONT PANEL SECTION
MAIN BOARD
Note: Follow the disassembly procedure in the numerical order given.
SECTION 2
DISASSEMBLY
3 case
1 tapping screws
5 three screws
(BVTP3 x8)
2 open the case
6 claw
4 flat wire
(CNS301)
1 two tapping screws
1 two tapping screw
s
4 flat wire
(CNS302)
6 claw
7 front panel section
5 Remove the
MAIN board
to direction of
the arrow
A
1
connector
(CNS800)
1 connector
(CNP802)
4 six screws
(BVTP3 x8)
2 two screws
(BVTP3 x8)
4 six screws
(BVTP3 x8
)
3 DC fan
1 connector
(CNS801)
A

– 5 –
SECTION 3
TEST MODE
This equipment is provided with a test mode built in the micro-
computer. The contents are described in the following.
[Initial Mode]
1. Press I/ubutton 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 [TV] ,
[DVD,2CH] , and [5.1CHINPUT,DVD] simultaneously.
2. Factory setting same as initial except center mode set to nor-
mal using jog can set to volume max or min directly.
[FL Check Mode]
1. Press I/ u button while both [ CENTERMODE ] and [VIDEO]
buttons simultaneously.
2. Fluorescent indicator tube and LED are checked, “FINISH” is
displayed and the status of the unit is set back in normal con-
dition.
[Gain Up Mode]
1. Press I/ u button while pressing [ SURROUNDMODE ] but-
ton.
2. “GAIN UP” is displayed on the fluorescent indicator tube and
the rear is gained up 3 dB.
3. To exit from this mode, press two buttons in the same manner
as step1.
“NORMAL” is displayed on the fluorescent indicator tube and
the status of the unit is set back in normal condition.
[Version Mode]
1. Press
I/ u button while pressing both [ CENTERMODE ] and
[ SURROUNDMODE ] buttons simultaneously.
2. Version of its destination is displayed on the fluorescent indi-
cator tube.

– 6 –
• Circuit Boards Location
SECTION 4
DIAGRAMS
POWER SW borad
DISPLAY board
JOG board
MAIN boar
d
STANDBY board
PRIMARY board
SECONDARY board

– 7 –
4-1. NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
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 Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
•2: nonflammable resistor.
•C: panel designation.
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.
•U: B+ Line.
•V: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark :VIDEO
• Voltages aretakenwithaVOM(Input impedance10 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: FRONT/AUDIO IN
f: REAR
E: CENTER
j:WOOFER
Note: The components identified by mark !or dotted line
with mark !are critical for safety.
Replace only with part number specified.
C
BThese are omitted. E
Q
B
These are omitted.
CE
Q

– 8 –
• Waveforms
– MAIN Board –
1IC300 #¡ (OSC)
– DISPLAY Board –
1IC201 #¢ (X1)
3.4 Vp-p
8 MHz
4.3 Vp-p
4.19 MHz

– 9 –
1
2
3
45
6
7
8
V+
VSB/SESIN
VSA
RESET
GND
OUTC
VSC
CR
VREF
+–
–+
–
+
–
+
Q
R S
• IC Block Diagrams
– STANDBY Board –
IC950 NJM2103D
IC500 LC7822
– MAIN Board –
IC100 M62447SP
2
1
4
3
6
5
8
7
10
9
12
11
14
13
16
15
18
17
41
42
39
40
37
38
35
36
33
34
31
32
29
30
OUTPUT
PORT
MICRO
COMPUTER
INTERFACE
DVDD
CLK
DATA
LATCH
DGND
AGND
OUT4
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
SW OUT
SR OUT
SL OUT
C OUT
R OUT
NC
L OUT
AVSS1
AVSS2
22 – 28
NC
21 – 19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CONTROL
LATCH
SHIFT RESISTOR
LEVEL SHIFT
CL
DI
CE
VEE
OUT
IN
OUT
IN
OUT
IN
VSS
S
RESET
VDD
OUT
ININ
OUT
IN
OUT
IN

– 10 –
IC300 LV1035M
STRIM
OSC
VOL
VOL
VCA VCA A
B
A
B
VCA VCA
VCA VCA VCA VCA
DEV
NOISE
GEN
NOISE
FILTER
BPF
CONTROL
CH
CONTROL
BPF
V REF
STRIM
S
MODE
RECT
RECT
DC
CUT
B NR
OUT
FILTER
DATA
DECODER
VOL/
MUTE
BPF
RECT
LOGIC
FF
LOGIC
FF RECT
C MODE
LOGIC LOGIC
S
S
S
AAS
B
BB
A
B
C
B
LR
AA
A
B
A
B
A
BA
B
A
B
S
VDD
PCM
PCM
CONTROL
SRAM
IN
FILTER
R
L
C
S
RA
B
A
B
A
B
A
B
L
L
R
L
R
R BPF2
R BPF1
S DC OUT
C DC OUT
R DC OUT
L DC OUT
V REF
VCC
C OUT
S OUT
R OUT
L OUT
GND
L IN
R IN
S IN
DELAY OUT
L BPF2
L BPF1
RT IN
LT IN
DC CUT
C MODE
GND
NS BPF1
OSC
NS BPF2
ENABLE
DATA
CLK
DATA
CLK
VSS
OSC OSC
VDD
A/D
NS
D/A
DC CUT
DC CUT
VCC
DET
IREF
GND
S-OUT
R-OUT
L-OUT
L RECT DC CUT4
R RECT
DC CUT3
L BPF3
VLR TH
VLR 1 VLR 2
VCS 2
VCS 1
VCS TH
L+R RECT
DC CUT2 L-R RECT DC CUT1 R BPF3
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
48
47
46
45
44
43
41
40
39
38
37
36
35
34
33
1817
16
15
14
13
12
11
10
9
7
3
4
5
6
1
2
8
19 20 21 22 23 24 25 26 27 28 29 30 31 32
42