Power : I/O Board Block Diagram - LG RH178H Service Manual

6. Power : I/O Board Block Diagram

5.3VA
U-COM
(MN101DF10GAF)
Reset IC
(KIA7031P)
PWR Fail
(KIA7042)
EEPROM
(24LC16B)
VPS/PDC
(SDA5650)
Tuner
Etc Logi c
5.2V
5VT
SYS_5.3VA
Video S/W
U-COM
(BH7868FS)
(MN101DF10GAF)
V 6dB Amp
(MM1510)
Opti cal Driv e
3-25
12V 12VG(SW)
A.SW
A/V.SW (C+)
(NJM2521)
(MM1443)
Diff OP AMP
(NJM4580)
3.3V
DAC A/V Decoder
(CS4351) (SAA7137)
I/O U-COM PWR CTL
PWR_CTL_H 5.2V, 12V, 3.3V, 1.8V
TIMER_H 5VT, 33VT
STANBY_H 12VG(SW)
3-26
33VT
Tuner
1.8V