Power System Block Diagram - Hitachi P50X901 Service Manual

AC120V
Filter PWB
AC
SW
Bus
SW
+5V +3.3V
Reg. Reg.
Audio
ADC
+3.3V +3.3V
Reg. Reg.
Cable Key
Equalizer ROM
+30V
Reg.
AV-Control
Terminal PWB
IR-receiver
LED
LED PWB
TABLE OF CONTENTS

Power system block diagram

Power Supply Unit
+16V
+15V +10.5V
+12V +3.3V
Reg. Reg.
Digital Audio Audio
Audio Amp. DSP PWM
+5V
+3.3V +1.0V
Reg.
Reg. DC-DC
+1.8V
Reg.
Bus
Demodulator
SW
+5V +5V +5V
Reg. Reg. Reg.
Tuner OOB AGC
I 2 C
Level shift
+3.3V
Reg.
I C Clock SD
2
Buffer Buffer MMC
SD PWB
+5.6V
STBY+5V
+9V +1.3V
Reg. DC-DC
Audio +2.5V +1.3V
DAC Reg. Reg.
Seine2-D
+3.0V
Reg.
+9V +9V
Reg. Reg.
LPF Buffer VCXO PLL
+5V +9V
Reg. Reg.
AV SW
Buffer
OPT
Output
Swivel
Vari.
Motor
Reg.
Driver
x2 x2
Swivel
FAN FAN
Stand
Buffer
Control PWB
6
P50X901, P50V701 only.
Vs
Va
Vcc
Main-Digital PWB
+3.3V
Reg.
+1.8V +3.3V +3.3V
DC-DC DC-DC Reg.
Seine2-D
DDR2
+5V
Seine2-A
Reg.
IR IR-Blaster
Mod. Driver
+2.5V
Reg.
Flash Memory
(OneNand)
+3.3V +3.3V
Reg. DC-DC
POD-
+2.5V
Vcc
Reg.
+1.2V POD PWB
Reg.
Oberon2 FC8 PWB
+1.8V
DC-DC
x2
+1.05V +3.3V
Reg. Reg.
FC8-
FC8
DDR2
DW3
PDP Panel Module
Sub
MICRO
+2.5V
Reg.
+1.5V
Reg.
PLD
(Nereid)
Vari.
Reg.
POD-
Vpp
+1.05V
DC-DC
+1.8V
x2
Reg.
LVDS
SW