Mitsubishi Electric LT-2220 Service Manual page 32

MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
A U DI O B l o c k Di a g r a m f o r L T -2 2XX /L T -3 0XX
PWB-MAIN
Component 1
Audio
(J201)
Component 2
Audio
(J201)
IC100
AV-SW
CXA2069
DVI-AUDIO
(J102)
PC-AUDIO
(J103)
VIDEO 1
IC701
AV-SW
CXA2089
VIDEO 2
MPX
from TU1A0
SIF output
Volume1
+
from
-
IC300
#24 IC305
3.3V
+
-
0V
PWB-SET(SUB)
IC710 MSP3440g
Main Audio
Processor
Core
-De modulator
-Volume
-Tone control
-Surround
-L/R-Mix
(for Woofer out)
- or others
Input
source
Select
SUB
auduo
processor
-Volume
PWB-MAIN
Volume control for MAIN
Amp
0.02Vdc to 1.15Vdc
Volume control for SUB Amp
AMPVCC
SAMPVCC
MAIN_L_P
MAIN_L_N
IC712
MAIN Out
AN7522 MAIN_R_P
MAIN_R_N
DAC
SUB_P
IC711
SUB_N
AN7522
DAC
Table: Supplied voltage to Amp +B
LT-2220
AMPVCC 7.5V
SAMPVCC 9V
Speaker -L
Speaker -R
Speaker -
Woofer
J706
Head
Phone
Jack
J705
LT-3020
9V
12V