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Sony TA-SA300WR Service Manual page 19

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– POWER Board –
IC910 STR-A6159M
OVER
SOURCE/OCP
1
CURRENT
PROTECTION
BLANKING
VCC
2
GND
3
FB/OLP
4
IC920 STR-W6735N
D 1
NC 2
S/GND 3
VCC 4
SS/OLP 5
FB 6
FB
+
OCP
+
BD
+
OCP/BD 7
BUFFER
DISCHARGE
OVER LOAD
PROTECTION
OVER VOLTAGE
PROTECTION
DELAY
THERMAL
SHUTDOWN
INTERNAL
UNDERVOLTAGE
BIAS
LOCKOUT
DRIVE
REGULATOR
PROTECTION
LATCH
R
DELAY
Q
S
SOFT START
S
Q
R
OSC
BSD
BOTTOM
+
SELECTOR
COUNTER
+
FEED
BACK
BURST
BIAS
R
S
PWM
LATCH
Q
LATCH
+
REGULATOR
START/STOP
& ICONST
BURST
BURST
CONTROL
OVP
OLP
+
Q
R
S
TA-SA300WR
OFF TIMER
8 D
7 D
DRIVE
6 NC
5 STARTUP
19

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