Pioneer PDP-434PU Service Manual page 81

5
LA4625 (HD AUDIO ASSY: IC3504)
• 2ch BTL AF Power Amp IC
Block Diagram
2
RIPPLE
FILTER
+
1
IN
--
3 BIAS
CIRCUIT
STANDBY
4
SW
IN2
+
6
IN
--
POP NOISE
PREVENTION
CIRCUIT
5
5
6
PREDRIVER POWER
LOAD SHORT
PROTECTOR
PREDRIVER POWER
OVER VOLTAGE /
SURGE PROTECTOR
THERMAL
SHUT DOWN
PREDRIVER POWER
LOAD SHORT
PROTECTOR
PREDRIVER POWER
7
PDP-434PU
6
7
14
OUTPUT PIN TO V CC
SHORT PROTECTOR
13
POWER
12
GND1
11
OUTPUT PIN TO GND
SHORT PROTECTOR
V CC
OUTPUT PIN TO GND
SHORT PROTECTOR
POWER
10
GND2
OUTPUT PIN TO V CC
SHORT PROTECTOR
7
8
9
8
81
8
A
B
C
D
E
F