Block Diagram - Standby Dcdc Section - Sony STR-KM7600 Service Manual

STR-KM7600
5-4. BLOCK DIAGRAM — STANDBY DCDC SECTION —
+4V
+6.3V
+5V
CN905
1
O +R3(+15V)
VIDEO SECTION
5
(2/2) -R3(-15V)
(Page 12)
J920
OUT
SYSTEM CONTROL
J921
DC5V 50mA MAX
OUT
ONLY FOR TA-KMSW500
CN970
4
SW-PROTECTOR
5
Q921-Q922
SUB-T(CEC)
SUB-T CONTROL
K
DIGITAL SECTION
(2/2)
(Page 16)
6
Q920
STOP (AC-OFF-DET)
AC IN DETECT
7
POWER RY
STR-KM7600
IC990
2 1
+4V REG
IC980
2 1
+6.3V REG
IC910 IC992
+7V REG +7V REG
F901
D903
F902
IC991
+5V REG
IC911
+5V
+6V REG
T901
POWER TRANSFORMER
(MAIN)
MAIN 2
SECTION Z
3
(Page 18)
4
5
5
4
MAIN
3
SECTION Y
2
(Page 18)
T921 : EA
T924 : SAF, AUS
POWER TRANSFORMER
(SUB)
5
6 4
7 3
8 2
9 1
14 14
F920
RY920
S910 JW924
VOLTAGE
SELECTOR
F910
F911
AUS, SAF
JW925
EA
Q923
RELAY DRIVE
CNP922
NEUTRAL
AC IN
3
LIVE
1