Sony STR-KM7600 - Block Diagram - Standby DCDC Section

1414
STR-KM7600
STR-KM7600
5-4. BLOCK DIAGRAM — STANDBY DCDC SECTION —
3
(MAIN)
5
2
POWER TRANSFORMER
5
3
4
4
2
T901
Z
Y
MAIN
SECTION
(Page 18)
MAIN
SECTION
(Page 18)
1
3
4
5
6
7
8
9
2
RY920
Q923
RELAY DRIVE
F910
S910
F911
F920
LIVE
1
NEUTRAL
3
CNP922
AC IN
EA
JW924
JW925
AUS, SAF
VOLTAGE
SELECTOR
F901
F902
D903
1
-R3(-15V)
+R3(+15V)
5
CN905
VIDEO SECTION
(2/2)
(Page 12)
O
IC980
12
+6.3V
+5V
IC990
12
+4V
IC992
+7V REG
IC910
+7V REG
+6.3V REG
+4V REG
IC991
+5V REG
J920
OUT
SYSTEM CONTROL
DC5V 50mA MAX
ONLY FOR TA-KMSW500
J921
OUT
Q920
AC IN DETECT
SUB-T(CEC)
STOP (AC-OFF-DET)
POWER RY
5
7
6
SW-PROTECTOR
4
CN970
DIGITAL SECTION
(2/2)
(Page 16)
K
Q921-Q922
SUB-T CONTROL
IC911
+6V REG
+5V
T921 : EA
T924 : SAF, AUS
POWER TRANSFORMER
(SUB)