Front Block Diagram; Block Diagrams - LG MAX220UB Service Manual

2. FRONT BLOCK DIAGRAM

OPTIONAL
Encoder
ADC KEY1/KEY2
Tact SW
REMOCON
AUX
JACK
USB
SOCKET
LED DRIVER IC
VOL UP/DOWN
(AAT3129)
RMC
AUX R/L
D+/D-
Detachable 24PIN/ Flip-Down 30PIN CONNECTOR
3-color LED
KEY LED(GREEN)
KEY KEY LED(RED)
LCD BLU
LCD BLU
WHITE LED
2-23 2-24
LCD
LCD Driver IC
(MC5502)