Read Sony SA-FT7ED / SA-WFT7 / SS-CNF7ED / SS-FRF7ED / WS-FT7 Service Manual online
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11
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
SA-FT7ED/WFT7/SS-CNF7ED/FRF7ED/WS-FT7
3-2. BLOCK DIAGRAM
3
J701
INPUT
3
4
1
6
7
1
7
5
7
5
1
46
22
28
57
37
36
21
18
17
POWER
AMP
Q651-654
50
3
5
4
64
63
POWER
AMP
Q671-674
THWINT
THWEXT
FEEDRIN
FEEDLIN
GNLS
IN L+
55 MUTE
18 VD
16
VG H
2 F/B
IN R-
GNL
GPL
GPLS
GPRS
GPR
GNR
GNRS
MUTE
Q602,603,607
DC
OFFSET
Q690,692,693
DC VOLTAGE
DETECT
Q604-606
PROTECTION
Q502,503
FILTER
Q501
FILTER AMP
IC503 (1/2)
PHASE AMP
IC503 (2/2)
PRE AMP
IC501 (1/2)
AMP
IC502 (2/2)
AMP
IC501 (2/2)
AMP
IC502 (1/2)
DRIVER AMP
IC601
7
5
SIGNAL
DETECT
DETECT
Q401,402
VOLTAGE
DETECT
Q403
+6.2V REG
Q404
RECT
D201-204
T201
POWER
TRANSFORMER
RELAY/LED
DRIVE
Q201-203,206
SIGNAL AMP
IC401
1
2
7
6
AUTO POWER OFF DETECT
IC402
VR501
BASS BOOST
VR502
LEVEL
OVERLOAD
PROTECT
Q204,205,207
INPEDANCE
DETECT
Q600,689,691
SUB+9V
+6.2V
SUB+9V
+15V REG
Q505,506,551
+25V
+15V
-15V REG
Q507,508,552
-25V
-15V
AC OFF
DETECT
Q208
D206
RY201
RY202
RECT
D101
D101
RECT
D151
D151
DC DETECT
PH101
ON/OFF
DRIVE
Q102
ON/OFF
DRIVE
Q101
12
VG L
9
OCP
8
VCI
SP901
SPEAKER
D604
+25V
SUB+9V
D107
D159
•
Signal path
: LINE
+25V
-25V
T101
DC-DC CONVERTER
TRANSFORMER
S501
PHASE
REVERSE
NORMAL
S401
POWER SAVE
S301
POWER
LD801
ON/STANDBY
OFF
AUTO
RY201
RY202
GREEN
RED
F901
AC IN
~
DC-DC CONVERTER
IC101
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