LG 42PC1D Series, Service Manual

Page: 26 / 50

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BLOCK DIAGRAM
Co
m
p
(DVD/DTV)
Rx0/1,
T
x
0/1
IR/TX
SC
L
/S
D
A
H/V(RGB)
SC
L
/S
D
A
Rx0/1/2/C
•
ICL3232C 24LC02BT
74HC14D
24LC02BT
Hudson
( Sub CH.
De
co
ding /
2D Comb /
2D
D
e-in
t.
/
Scaling )
CX
A2069Q
A/V Sw
itch
Tu
ner
TU_
M
a
in
Sil9012
TMDS Rx
(HDCP)
RGB_
PC
/DTV
RGB H/V
RGB H/V
Cortez
( Main CH.
De
co
ding /
3D Comb /
3D
D
e-in
t.
/
Scaling &
FRC /
PIP Mu
x.
/
GUI /
VSB De
co
ding /
Audio Delay /
CPU )
I
2
C
R
S
232_Rx/T
x_Cor
tez
S
ide-AV B
D
AV
S-AV
YCin5
HY5DU281622E
DDRRAM (
128M
B X2)
AM
29L
V
F-RO
M (2M
B
)
PC_Audio LR
SI
F
AM
_Audio
AVin5
MSP4410K
Audio SW & Tone
Contr
o
l
NSP2100A
PWM Mod
.
TAS5112
Digital Amp
LRCK/LRCH SC
K
R_SPK_out
AV_LR
PC_Audio L
R
AM
_Audio,
SIF
I
2
S
Co
m
p
Scart_RGB /
FB
Co
m
p_L/R
AVin2 (YC/CVB
S
/L/
R
/S
cart_ID)
AVin4(CVBS
/L/R
)
YCin4
V or Y /
C (Main)
L_CH R_CH
DTV_LRout
LVDS_31P
/
Tx0/1/2/3/C
•
Disp_E
n
SC
L
/S
D
A
V_out1 Y_in1
V or
Y /
C (Sub)
/
L
_SPK_out
I 2
S
I
2
S
I
2
C
For DDC_RG
B
For DDC_HDMI
I
2
C
RGB
(P
C/DTV) HDM
I
(P
C/DTV)
R
S
23
2
R/C
OUT
Scart1
Scart2
DTV OUT
AV
S-AV
PC_
A
u
di
o
TV
_out (
C
VB
S/L/R)
AVin1 (CVB
S/L
/R/
Scart_ID)
DTV_out (
C
VB
S/L
/R)
CI SLOT
STi5100
Tune
r
4M
B
Y
T
E
FR
ESH
ME
M
O
R
Y
HY5DU561622D
DDRRAM (
2
56M
B)
T.S 7 , SYN
C
,C
K,V
A
LID
74LV
C
541
74L
V
C
541
74L
V
C
245
CVBS
27MHZ
CRY
ST
AL
Y
C
b
C
r
656 Format _8bit
DIGITAL
ANALOG
/
Spliter
SN7
4
LVT
H
541
I
2
C
URA
T
_
D
ATA_
IN
/O
UT
IN
OUT
W
ir
ed-
o
r 8bit
I 2
C
I
2
C
MNT_out (CVB
S
/L/R)
,SOUND MUTE
I
2
S (
HDM
I
Sound)
3bit
TV
_L
Rout
CVB
S
SN7
4
LVT
H
541
/
I
2
S
,
27M
C
L
K _4bit
SPDIF O
U
T
SPDIF_out
SPDIF_out_A
/
/
HDMI_Data
24bit_A
H/V SYNC,
C
LK,
DE
4bit
HDMI_Data
24bit_B
H/V SYNC,
C
LK,
DE
4bit
EP
F_
R/L
R
S
232_Rx/T
x_Hu
d
74LCX
157
R
S
232_Rx/T
x_STi
R
S
232_Rx/T
x_STi
Co
m
p
24bit_A
24bit_B
I 2
S (
D
TV
Sound)
3bit
27M CL
K
DTV_LRout TV
_L
Rout
Co
m
p
(Y/
P
b/
Pr)
Co
m
p_L/R
L_CH
R_CH
Varia
b
le_L/R
Varia
b
le_L/R
74LC
X
157
SPDIF_out_B
SPDIF_out_B
SPDIF_out_A
R/C
IN
74LV
C
541