Sony HBD-E780W Service Manual page 67

• IC Block Diagrams
– MB-141 Board –
IC303 MM3404A50URE
IC305, 5303 MM3404A33URE
CE 1 BIAS
VOLTAGE
REFERENCE
GND 2
IC304, 702 MM3404Z11NRE
VDD 1
GND 2
REFERENCE
CE 3
IC307, 5301, 5307 BD9329AEFJ-E2
BST 1 VREG
OVER CURRENT
VIN 2
PROTECT
LVS
SW 3
LVS
GND 4
–
+
CURRENT
LIMIT
CURRENT
LIMIT
+
VOLTAGE
BIAS
OSC
IBIAS
UNDER VOLTAGE
S
LOCK OUT
THERMAL
DRIVE
SLOPE
SHUTDOWN
LOGIC
R PWM
HBD-E780W/E980W/E985W
4 VDD
3 VOUT
5 VOUT
4 NC
VCC
VREF
SOFT
START
ERROR
AMP
8 SS
7 EN
6 COMP
5 FB
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