Hitachi CML155XW Service Manual page 22

CML155XW Main Board Block Diagram
+12V DC
Power
Supply
EPROM
EPROM
VIDEO
DECODER
EPROM
Keypad
Audio
input 1
AUDIO
Audio
SELECT
input 2
+2.5V
XTAL
+3.3V
+5V
+12V
EDID
Gm5020
PLL
ADC
TMDS
EDID
DIGITAL VIDEO
OSD
SCALER
292 pin PBGA Package
MICROCONTROLLER
Audio Amplifier
SDRAM
INVERTER
Speaker/Earphone