MHC-SV7AV, TA-SV7AV — Sony Audio Service Manual (repair manual)

Model
MHC-SV7AV TA-SV7AV
Pages
27
Size
2.43 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
mhc-sv7av-ta-sv7av.pdf
Date

View 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.
Amplifier section
The following measured at AC 120, 220, 230 – 240 V,
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)
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)
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)
Inputs
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
700 nm
MIC 1/2:
sensitivity 1 mV,
(phone jack)
impedance 10 kilohms
Outputs
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
S-VIDEO  OUT:
Y: 1 Vp-p, unbalanced,
(4-pin/mini-DIN jack)
Sync negative,
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
REAR SPEAKER:
accepts impedance of 8 to
16 ohms
CENTER SPEAKER:
accepts impedance of 8 to
16 ohms
SUB WOOFER OUT:
Voltage 1 V,
impedance 1 kilohms
General
Power requirements
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
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.
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
– 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
6.
EXPLODED  VIEWS
6-1. Cover Section .................................................................. 20
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.
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.
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)
Turn over the FRONT AMP board with Heat Sink, 
SURROUND AMP board and RELAY board connected.
Remove the back panel 
(2CH/VCD) section.
Remove the fan motor 
connector lead wire.
FRONT AMP board
(CN104)
Connect jig (extension 
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.
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,
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,
25, 34, 36)
MIC 1/2 jacks q; (33)
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
 (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
(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,
22, 25, 26, 30–33, 35)
EQ wh (31)
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,
20, 21)
ON SCREEN wk (18)
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,
21)
SET UP w; (11, 13, 30, 32, 33)
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
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
5
TA-SV7AV
• This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY  FLOW
SECTION  3
DISASSEMBLY
3-2. COVER
(Page 6)
3-3. FRONT PANEL SECTION
(Page 6)
3-4. BACK PANEL (2CH/VCD) SECTION
(Page 7)
3-5. FRONT AMP BOARD
(Page 7)
SET
Note 1: The process described in     can be performed in any order.
Note 2: Without completing the process described in     , the next process can not be performed.

Download Sony MHC-SV7AV / TA-SV7AV Service Manual (Repair Manual)

Here you can view online or download Sony MHC-SV7AV / TA-SV7AV Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony MHC-SV7AV / TA-SV7AV Audio. Information contained in Sony MHC-SV7AV / TA-SV7AV service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).