Service manual

Page 34
MODELS: LT-3280D/LT-3780D
MUTE Circuit
(Q301~Q304)
SP
AUDIO CIRCUIT BLOCK-DIAGRAM for LT-3780/LT-3280
PC AUDIO IN (J304)
MonitorLink
TM
A/V
(J500)
HDMI receiver
(IC500)
SiI9993CTG
AUDIO DAC
(IC302)
CS4334-KSZ
AMP
MP7720DS-Z
(IC380)
AUDIO Processor
MSP3440G(IC301)
|(
|(
|(
|(
I2S
R
L
5V_SCL
5V_SDA
AMP
MP7720DS-Z
(IC370)
|(
MUTE_MAIN
|(
MUTE_MAIN
MA
|(
|(
R
L
L
R