Ps251 Pwr Block Diagram - Pioneer PDP-505MX Service Manual

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3.3 PS251 PWR BLOCK DIAGRAM

PS251 PWR 690W Block Diagram
AC(L)
Noise
AC(N)
filter
FG
PFC
circuit
STB
converter
5
6
Primary Secondary
VS
converter
VD
converter
Power
ON/OFF
relay
ON/OFF
Vs switch
ON/OFF
Vd switch
ON/OFF
Vcc switch
Vcc
converter
D+3.3V
AC detection
PDP-505MX
6
7
PFC detection
Voltage
detection
Vs
Vs
Vs
Vd
Vcc
Vd
D+3.3
Vd
S+12
SW7
PFC switch
Vcc
D+2.5
A+12
A+12
S+12
A+6
A+6
M+7
M+7
7
8
POWER
LVP
Vcc
ALM
D+3.3V
POMUTE
D+2.5
S+12
8
A
B
C
D
E
F
19