Hitachi 32PD3000E Service Manual page 27

32PD3000 / 42PD3000
IC04
IC05
IC06
IC07 Analogue Switch for Sub video ; BU4053
supply voltage ; +9V at pin 16
2 inputs, main YUV from IC03 and RGB from micro (TELETXT), are switched
and connected to sub video input for FC4
This is enabled when TV+TEXT is selected (SUB TELETEXT), and when PC
window is selected (SUB VIDEO)
IC09 I/O expanders ; M62320FP
supply voltage ; +5V at pin 13
control by ; I2C, SDA at pin 3 and SCL at pin 2
D00 pin 4 component video IC02, IC05 components input
D01 pin 5 Matrix
D02 pin 6 PC
D03 pin 7 OSD-blank
D04 pin 9 Cinema
D05 pin 10 Clamp-source
D06 pin 11 TV/TEXT
D07 pin 12 N.C.
26
Audio switch, main L/R or AV4 (components input) L/R. main L/R comes
from MSP3410 audio switch.
Video switch, Front video or AV4 (in case of YCbCr normal components),
which is connected to TDA9321 for sync separation
Audio switch, Centre sound or AV4 (components input) L/R. Output goes
to IC04 to switch another audio input.
connect to
IC02 RGB --> YUV
IC07 Not PC mode (SUB TEXT) PC mode (SUB video in PCW)
IC03 kill OSD
IC06, IC04 Audio centre not selected Audio centre selected
IC05 CP from TA1370
IC03 TEXT (select RGB input) TV
L
other than components
through
OSD enabled
SC from TDA9321
H