Read Sony MHC-SV7AV / TA-SV7AV Service Manual online
SERVICE MANUAL
AMPLIFIER
E Model
SPECIFICATIONS
TA-SV7AV
Ver 1.0 2001.06
9-873-154-01
Sony Corporation
2001F0500-1
Home Audio Company
C
2001.6
Shinagawa Tec Service Manual Production Group
TA-SV7AV is the Amplifier section
in MHC-SV7AV.
in MHC-SV7AV.
Amplifier section
The following measured at AC 120, 220, 230 – 240 V,
50/60 Hz
50/60 Hz
Front Speaker:
DIN power output (rated) 95 + 95 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
120 + 120 watts
(6 ohms at 1 kHz, 10%
THD)
(6 ohms at 1 kHz, 10%
THD)
Center Speaker:
DIN power output (rated) 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 watts
(8 ohms at 1 kHz, 10%
THD)
(8 ohms at 1 kHz, 10%
THD)
Rear Speaker:
DIN power output (rated) 30 + 30 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
40 + 40 watts
(8 ohms at 1 kHz, 10%
THD)
(8 ohms at 1 kHz, 10%
THD)
Inputs
VIDEO (AUDIO) IN:
VIDEO (AUDIO) IN:
voltage 250 mV,
(phono jacks)
impedance 47 kilohms
MD IN:
voltage 450 mV,
(phono jacks)
impedance 47 kilohms
OPTICAL IN:
(Square optical connector jacks, rear panel)
wavelength
(Square optical connector jacks, rear panel)
wavelength
700 nm
MIC 1/2:
sensitivity 1 mV,
(phone jack)
impedance 10 kilohms
Outputs
MD OUT:
MD OUT:
voltage 250 mV
(phono jacks)
impedance 1 kilohms
VIDEO OUT:
max. output level
(phono jack)
1 Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
negative, load impedance
75 ohms
S-VIDEO OUT:
Y: 1 Vp-p, unbalanced,
(4-pin/mini-DIN jack)
Sync negative,
C: 0.286Vp-p,
load impedance 75 ohms
C: 0.286Vp-p,
load impedance 75 ohms
PHONES:
accepts headphones of
(stereo mini jack)
8 ohms or more
FRONT SPEAKER:
accepts impedance of 6 to
16 ohms
16 ohms
REAR SPEAKER:
accepts impedance of 8 to
16 ohms
16 ohms
CENTER SPEAKER:
accepts impedance of 8 to
16 ohms
16 ohms
SUB WOOFER OUT:
Voltage 1 V,
impedance 1 kilohms
impedance 1 kilohms
General
Power requirements
Thailand model:
Thailand model:
220 V AC, 50/60 Hz
Other models:
120 V, 220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption
300 watts
Dimensions (w/h/d)
Approx. 280 x 128 x 350 mm
Mass
Approx. 7.7 kg
Design and specifications are subject to change
without notice.
without notice.
2
TA-SV7AV
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
3
2.
GENERAL
...................................................................
4
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
5
3-2. Cover ...............................................................................
6
3-3. Front Panel Section .........................................................
6
3-4. Back Panel (2CH/VCD) Section ....................................
7
3-5. FRONT AMP Board .......................................................
7
4.
TEST MODE
..............................................................
8
5.
DIAGRAMS
5-1. Note for Printed Wiring Boards
and Schematic Diagrams ................................................ 10
5-2. Printed Wiring Boards – FRONT AMP Section – ........ 11
5-3. Schematic Diagram – FRONT AMP Section (1/2) – .... 12
5-4. Schematic Diagram – FRONT AMP Section (2/2) – .... 13
5-5. IC Pin Function Description ........................................... 14
5-6. Printed Wiring Board
5-3. Schematic Diagram – FRONT AMP Section (1/2) – .... 12
5-4. Schematic Diagram – FRONT AMP Section (2/2) – .... 13
5-5. IC Pin Function Description ........................................... 14
5-6. Printed Wiring Board
– SURROUND AMP Section – ...................................... 14
5-7. Schematic Diagram
– SURROUND AMP Section – ...................................... 15
5-8. Printed Wiring Boards – CONTROL Section – ............ 16
5-9. Schematic Diagram – CONTROL Section – ................. 17
5-10. Printed Wiring Boards – POWER Section – ................. 18
5-11. Schematic Diagram – POWER Section – ..................... 19
5-9. Schematic Diagram – CONTROL Section – ................. 17
5-10. Printed Wiring Boards – POWER Section – ................. 18
5-11. Schematic Diagram – POWER Section – ..................... 19
6.
EXPLODED VIEWS
6-1. Cover Section .................................................................. 20
6-2. Front Panel Section ......................................................... 20
6-3. Chassis Section ............................................................... 21
6-2. Front Panel Section ......................................................... 20
6-3. Chassis Section ............................................................... 21
7.
ELECTRICAL PARTS LIST
............................... 22
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 PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
3
TA-SV7AV
SECTION 1
SERVICING NOTES
This set is a component of the MHC-SV7AV.
The MHC-SV7AV system configuration is as shown below, and
therefore it does not operate normally unless all four components
are connected.
In performing the repair, connect all components with the system
cables.
Note: The precaution to the users is described on the label stuck
on the back panel (Video CD player) and in the troubleshooting
section in the Operation Manual.
The MHC-SV7AV system configuration is as shown below, and
therefore it does not operate normally unless all four components
are connected.
In performing the repair, connect all components with the system
cables.
Note: The precaution to the users is described on the label stuck
on the back panel (Video CD player) and in the troubleshooting
section in the Operation Manual.
System Configuration:
POWER SUPPLY
AC IN
TA
MASTER & GRAPHIC
µ
con
ST
MCE
TC
µ
con
TC
DISPLAY
HTC & VMP
µ
con
MODEL IDENTIFICATION
– Back Panel –
PART No.
Model
PART No.
Singapore model
4-233-558-2
[]
Saudi Arabia model
4-233-558-3
[]
Thailand model
4-233-558-4
[]
FRONT AMP BOARD SERVICE POSITION
In checking the FRONT AMP board, prepare jig
(extension cable J-2501-019-A: 1.25 mm Pitch, 25 core, Length
300 mm)
(Fig A)
(extension cable J-2501-019-A: 1.25 mm Pitch, 25 core, Length
300 mm)
(Fig A)
Turn over the FRONT AMP board with Heat Sink,
SURROUND AMP board and RELAY board connected.
SURROUND AMP board and RELAY board connected.
Remove the back panel
(2CH/VCD) section.
(2CH/VCD) section.
Remove the fan motor
connector lead wire.
connector lead wire.
FRONT AMP board
(CN104)
(CN104)
Connect jig (extension
cable J-2501-019-A
to the FRONT AMP board (CN104)
and PANEL board (CN700).
cable J-2501-019-A
to the FRONT AMP board (CN104)
and PANEL board (CN700).
PANEL board (CN700)
(Fig A)
4
TA-SV7AV
SECTION 2
GENERAL
This section is extracted from
instruction manual.
instruction manual.
A
P
o
O
p
B
C
4
3
5
6
2
7
9 8
0
qa
qs
qd
qf
qg
qh
qj
1
Main unit
A/V amplifier
CINEMA STUDIO A–C 3 (9,
28)
DIGITAL 7 (36, 40)
ECHO LEVEL 8 (33)
ENTER/O/o/P/p 2 (11, 13,
ECHO LEVEL 8 (33)
ENTER/O/o/P/p 2 (11, 13,
15, 17, 21, 25, 26, 30–33, 35)
EQ qs (31)
EQ ON/OFF qd (10, 32)
FILE SELECT qa (27, 28, 32)
FUNCTION 6 (10, 14–17, 24,
EQ ON/OFF qd (10, 32)
FILE SELECT qa (27, 28, 32)
FUNCTION 6 (10, 14–17, 24,
25, 34, 36)
MIC 1/2 jacks q; (33)
MIC LEVEL 9 (33)
MULTI CHANNEL DECODING
MIC LEVEL 9 (33)
MULTI CHANNEL DECODING
indicator 4 (29)
PHONES jack qj
PICTURE EFFECT qg (21)
SET UP qf (11, 13, 30, 32, 33)
SUR qh (30)
VOLUME 5
@/1
PICTURE EFFECT qg (21)
SET UP qf (11, 13, 30, 32, 33)
SUR qh (30)
VOLUME 5
@/1
(power) 1 (9, 10, 22, 40)
Parts Identification
The items are arranged in alphabetical order.
Refer to the pages indicated in parentheses ( ) for details.
x
M
m
>
.
nN
nN
O
V
v
B
b
X
1 2 3 4 5
wh
wj
wl
ed
ea
6
7
9
8
q;
qa
qd
qs
qf
qg
qj
qh
qk
ql
wa
w;
ws
wf
wd
wg
wk
es
eg
ej
ek
el
e;
ef
eh
ra
rd
rg
r;
rs
rf
Remote Control
CHECK qd (17)
CLEAR qs (17, 19)
CLOCK/TIMER SELECT 3
CLEAR qs (17, 19)
CLOCK/TIMER SELECT 3
(26, 35)
CLOCK/TIMER SET 2 (13, 25,
34)
DBFB ej (27)
DIGITAL r; (36, 40)
DISPLAY rd (13, 18, 33, 40)
D.SKIP 9 (14, 16, 20, 21)
ENTER wf (11, 13, 15, 17, 21,
DIGITAL r; (36, 40)
DISPLAY rd (13, 18, 33, 40)
D.SKIP 9 (14, 16, 20, 21)
ENTER wf (11, 13, 15, 17, 21,
22, 25, 26, 30–33, 35)
EQ wh (31)
EQ ON/OFF wa (32)
FILE SELECT +/– wd (27, 28,
EQ ON/OFF wa (32)
FILE SELECT +/– wd (27, 28,
32)
FUNCTION el (10, 14–17, 24,
25, 34, 36)
GROOVE ek (27)
KARAOKE PON qk (33)
KEY CONTROL / ql (33)
MD rs (36)
Numeric buttons 8 (15, 16, 19,
KARAOKE PON qk (33)
KEY CONTROL / ql (33)
MD rs (36)
Numeric buttons 8 (15, 16, 19,
20, 21)
ON SCREEN wk (18)
PICTURE EFFECT wl (21)
PRESET –/+, PREV/NEXT ea
PICTURE EFFECT wl (21)
PRESET –/+, PREV/NEXT ea
(14, 15, 20, 22)
REPEAT q; (15, 16)
RETURN O eg (15)
PLAY MODE qa (14, 16, 17, 25)
SELECT CD N es (14–17, 19,
RETURN O eg (15)
PLAY MODE qa (14, 16, 17, 25)
SELECT CD N es (14–17, 19,
21)
SET UP w; (11, 13, 30, 32, 33)
SLEEP 1 (34)
SPECIAL MENU e; (19, 20, 21)
SPECTRUM ANALYZER rf
SLEEP 1 (34)
SPECIAL MENU e; (19, 20, 21)
SPECTRUM ANALYZER rf
(33)
SUR wj (30)
TAPE A nN ef (23)
TAPE B nN qf (23, 24)
TUNER/BAND ed (22)
TUNING –/+ qh (22)
TV CH +/– 7 (10)
TV VOL +/– 6 (10)
TV @/1 4 (10)
TV/VIDEO rg (10)
VIDEO ra (36)
VOL +/– ws
TAPE A nN ef (23)
TAPE B nN qf (23, 24)
TUNER/BAND ed (22)
TUNING –/+ qh (22)
TV CH +/– 7 (10)
TV VOL +/– 6 (10)
TV @/1 4 (10)
TV/VIDEO rg (10)
VIDEO ra (36)
VOL +/– ws
BUTTON DESCRIPTIONS
@/1
(power) 5
X
(pause) qj
x
(stop) qg
./>
(go back/go forward)
ea
m/M
(rewind/fast forward)
qh
O/o/P/p wg
>10 eh
>10 eh
