Hitachi 55HDX99/DW2-U Service Manual page 57

POWER SYSTEM BLOCK DIAGRAM
AC120V
Filter PWB
Power Supply Unit
AC
SW
+12V
+5V +3.3V
Reg. DC-DC
Sync. Digital
sep.
Audio
Amp.
FLASH
EPLD
+2.5V
Reg.
+1.5V
Reg.
Audio
DSP
IEEE1394
+3.3V
Reg.
IR-Blaster
Driver
Cable-
Equalizer
HDMI PWB Sub-Digital PWB
IR receiver
LED
LED PWB
(PFC)
+10.5V +5.6V STBY+3.3V
+1.3V +1.8V
DC-DC DC-DC
+1.3V +2.5V
Reg. Reg.
Seine2-D DDR2
+3.0V
Reg.
VCXO
PLL
+3.3V
Reg.
+5V
+5V +1.8V
Reg. Reg.
Tuner Demodulator
OPT
AGC
Output
OOB
Vs
Va
Vcc
STBY+5V
+3.3V +9V +9V
Reg.
Reg. Reg.
+2.5V LPF
Reg.
+5V
+1.5V
Reg.
Reg.
Seine2-A USB
+1.0V +5V
DC-DC Reg. Reg.
AV SW
Reg.
Vari.
Reg.
FAN FAN
SD
MMC
56
PDP Panel Module
(+80V)
(+60V)
(+5.1V)
(+3.3V)
+3.3V
Reg.
Audio DAC
+3.3V
Reg.
Sub
Audio
MICRO
ADC
Main-Digital PWB
+9V +9V
Reg.
Swivel
Motor
Driver
Buffer
+3.3V
+3.3V
Reg. DC-DC
+2.5V
Reg.
+1.2V
POD-
Reg.
Vcc
FPGA
POD PWB
DW2U
Swivel
Stand
Vari.
Reg.
POD-
Vpp