Power : I/O Board Block Diagram - LG RH4820W Service Manual

9. Power : I/O Board Block Diagram

5VA
U-COM
(H8S-2196)
Reset IC
(KIA7031P)
PWR Fail
(KIA7042)
EEPROM
(AT24C16)
VPS/PDC
(SDA5650)
V. S/W(E.RGB/I.RGB)
Etc Logic
5V
12V
Nicam/A2
(MSP3417)
V.S/W
(MM1623)
Optical Drive
(MM1225)
5VT
DAC_Analog Cync. SEP
(CS4392) (MM1109)
Diff OP AMP
(NJN5532)
A.SW
(NJM2521)
5VAA
Audio DAC
REG
(CS4392)
Audio ADC
(CS5340)
I/O Ucom PWR CTL
PWR_CTL_H 5V, 12V CONTROL
TIMER_H 5VT, 33VT
3-31 3-32
12VA 33VT
V.SW (C+)
Tuner
(MM1443)