MHC-SV7AV, ST-SV7 — Sony Audio Service Manual (repair manual)

Model
MHC-SV7AV ST-SV7
Pages
34
Size
3.11 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
mhc-sv7av-st-sv7.pdf
Date

View Sony MHC-SV7AV / ST-SV7 Service Manual online

SERVICE MANUAL
FM STEREO, FM/AM
SUPERHETERODYNE TUNER
E Model
SPECIFICATIONS
ST-SV7
Ver 1.0  2001.06
ST-SV7 is the tuner section
in MHC-SV7AV.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Middle Eastern model:
Other models:
531 – 1,602 kHz
(with the interval set at 9 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
Dimensions (w/h/d)
Approx. 280 x 108 x 340 mm
Mass
Approx. 2.1 kg
Design and specifications are subject to change
without notice.
531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz 
(with the interval set at 10 kHz)
9-873-152-01
Sony Corporation
2001F0500-1
Home Audio Company
C
 2001.6
Shinagawa Tec Service Manual Production Group
2
ST-SV7
TABLE  OF  CONTENTS
1.
SERVICING NOTES
................................................
2
2.
GENERAL
Location of Controls .......................................................
3
Setting the Time ..............................................................
4
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
5
3-2. Cover ...............................................................................
6
3-3. Front Panel Section .........................................................
6
3-4. PANEL Board, SIRCS Board .........................................
7
3-5. Tuner pack (FM/AM) ......................................................
7
3-6. MAIN Board ...................................................................
8
3-7. DSP Board .......................................................................
8
4.
TEST  MODE
..............................................................
9
5.
DIAGRAMS
5-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 10
5-2. Schematic Diagram  – MAIN Board (1/2) – .................. 12
5-3. Schematic Diagram  – MAIN Board (2/2) – .................. 13
5-4. Printed Wiring Board  – MAIN Board – ........................ 14
5-5. Printed Wiring Board  – DSP Board – ............................ 15
5-6. Schematic Diagram  – DSP Board (1/2) – ..................... 16
5-7. Schematic Diagram  – DSP Board (2/2) – ..................... 17
5-8. Printed Wiring Boards  – PANEL Section – .................. 18
5-9. Schematic Diagram  – PANEL Section – ....................... 19
5-10. IC Pin Function Description ........................................... 20
6.
EXPLODED  VIEWS
6-1. Cover, Front Panel Section ............................................. 26
6-2. Chassis Section ............................................................... 27
7.
ELECTRICAL  PARTS  LIST
............................... 28
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  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.
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
3
ST-SV7
1 ANTENNA terminal
2 SYSTEM CONTROL 1 connector (TO TA-SV7AV)
3 SYSTEM CONTROL 2 connector (TO TA-SV7AV)
4 SYSTEM CONTROL 3 connector
(FROM MCE-SV7)
5 OPTICAL IN terminal
6 OPTICAL IN terminal (FROM MCE-SV7)
7 SYSTEM CONTROL 4 connector (TO TC-S3)
8 OPTICAL OUT terminal
9 SUB WOOFER OUT jack
0 MD IN/OUT jack
qa VIDEO (AUDIO) IN jack
– Rear Panel –
SECTION  2
GENERAL
This section is extracted from
instruction manual.
LOCATION  OF  CONTROLS
– Front Panel –
1
2
3
4
5 6 7 8
0
9
qa
+
+
qk
qlw; wa
ws
wd
wf
wg
wh
wj
CLOCK/TIMER wh (13, 25, 34)
DISPLAY qk (13, 18, 33, 40)
ENTER ws (22)
IR receptor wj
PRESET –/+ wd (22)
STEREO/MONO ql (22)
TIMER SELECT wg (26, 35)
TUNER/BAND wf (22)
TUNER MEMORY w; (22)
TUNING –/+ wa (22)
4
ST-SV7
Setting the time
1
Turn on the system.
2
Press CLOCK/TIMER (or CLOCK/TIMER
SET on the remote).
When you set the time for the first time,
proceed to step 5.
3
Press 
or o repeatedly to select
“CLOCK SET”.
4
Press ENTER (A/V amplifier or remote).
5
Press 
or o repeatedly to set the hour.
6
Press ENTER (A/V amplifier or remote).
7
Press 
or o repeatedly to set the
minutes.
8
Press ENTER (A/V amplifier or remote).
Tip
If you have made a mistake or want to change the
time, start over from step 2.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
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
ST-SV7
• 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. PANEL BOARD,
SIRCS BOARD
(Page 7)
3-7. DSP BOARD
(Page 8)
3-5. TUNER PACK (FM/AM)
(Page 7)
3-6. MAIN BOARD
(Page 8)
SET

Download Sony MHC-SV7AV / ST-SV7 Service Manual (Repair Manual)

Here you can view online or download Sony MHC-SV7AV / ST-SV7 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony MHC-SV7AV / ST-SV7 Audio. Information contained in Sony MHC-SV7AV / ST-SV7 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).