LG 32LC3D (CHASSIS:LT61A) Service Manual ▷ View online
- 13 -
NO VIDEO
REPLACE LCD MODULE
CHECK THE PERIPHERAL
IC800
CHECK LVDS Output
P3(PIN 21, PIN 22)
No
CHECK THE PERIPHERAL
IC1
DOWN LOAD ISP DATA
or REPLACE MAIN BOARD
or REPLACE MAIN BOARD
Check L2
(12V)
No
Yes
CHECK L1022
(24V)
CHECK R898
(3.3V)
No
Yes
Yes
Yes
No
- 14 -
NO SOUND
REPLACE JACK BOARD
INSERT CABLES WELL
IS THE SPK CABLE
CONNECTED WELL?
No
CHECK IC302 OR CHANGE
DOES IC302 OPERATE?
No
Yes
CHECK IC301 OR CHANGE
DOES IC301 OPERATE?
No
Yes
CHECK X300 OR CHANGE
DOES IC300 OPERATE?
DOES IC400 OPERATE?
No
Yes
Yes
Yes
CHECK X400 OR CHANGE
No
BLOCK DIAGRAM(VIDEO)
- 15 -
3.3V
1.8V
3.3V
2.5V
1.8V
3.3V
1.8V
9V
12C
12C
12C
12C
RX/TX
RX_0/1/2/C
DDC_SCL/SD
A
RGB PC/DTV_H/V
RGB PC/DTV_H/V
H/V Sync_CLK_DE
HDMI_D
A
T
A[0-23]
TX/RX_COR
SCL/SD
A
SCL/SD
A
CH D
A
T
A
0/1/2/3 +,-
CH CLK +,-
SCL/SD
A
SCL/SD
A
SCL/SD
A
RF J
a
c
k1 f
or Digital
D_COMP_YPbPr_HUD
25P from Digital Module
RX/TX_STI
D_COMP_YPbPr
LVDS 31P
MODULE_ON OFF/DISP_EN
RGB/SD
A
COMP1_Rear
Y/Pb/Pr
V
V
Y/C
A
V1_Rear/A
V2_Side
Monitor out_Rear
S-Video/Rear
TU_Main_CVBS
MAIN_V/Y
MAIN_DE
SYNC_DE
SUB_V/Y/C
RGB_Rear
RGB
CVBS
RX/TX
RX/TX_HUDSON
RX/TX_STI
24Bit_B
12C
U
A
R
T
DT
uner
12C
A
T
uner
STC3232
CM2021
CA
T24WC02
74F14SCX
CA
T24WC02
LA7217
TC74LCX157
24C32
24C256
HY5DU281622
FLI8125AA-LP
(HUDSON)
0X6C
FLI8532
(Cor
tez)
SIL9011
(HDMI
RECEIVER)
0X62
CXA2069
(A/V SW
0X90)
HY5DU281622
MX29L
V16
- 16 -
BLOCK DIAGRAM(AUDIO)
Digital
Module
9V
12V
3.3V
1.8V
5V
9V
3.3V
2.5V
1.8V
3.3V
2.5V
HY5DU281622
MX 29L
V16
FLI8532
(Cor
tez)
A
u
dio Decoder
MSP4410K
A
udio SW &
T
one Control
0X80
CAX2069
(A/V SW)
0X09
Sil9011
TMDS Rx
(HDCP)
0X62
Sound
Control
NSP 2100A
(PWM MOD)
0X6C
T
AS5112
(Digital Amp)
HY5DU281622
19V
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