Read 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.
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:
Middle Eastern model:
Other models:
531 – 1,602 kHz
(with the interval set at 9 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)
(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
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
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-
• 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.
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.
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.
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)
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).
SET on the remote).
When you set the time for the first time,
proceed to step 5.
proceed to step 5.
3
Press
O or o repeatedly to select
“CLOCK SET”.
4
Press ENTER (A/V amplifier or remote).
5
Press
O or o repeatedly to set the hour.
6
Press ENTER (A/V amplifier or remote).
7
Press
O 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.
time, start over from step 2.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
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
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
PRESET –/+, PREV/NEXT ea
(14, 15, 20, 22)
REPEAT q; (15, 16)
RETURN
RETURN
O eg (15)
PLAY MODE qa (14, 16, 17, 25)
SELECT CD
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
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
TUNING –/+ qh (22)
TV CH +/– 7 (10)
TV VOL +/– 6 (10)
TV
@/1 4 (10)
TV/VIDEO rg (10)
VIDEO ra (36)
VOL +/– ws
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