LG 50PJ350 Service Manual page 20

250_350
RGB
P900
SPG09-DB-010
RED_GND
6
GND_2
1
11
RED
GREEN_GND
7
DDC_DATA
2 12
GREEN
BLUE_GND
8
H_SYNC
3 13
BLUE
NC
9
V_SYNC
4 14
GND_1
R974 0
SYNC_GND
10
DDC_CLOCK
5 15
R973 0
DDC_GND
READY
16
SHILED
GND
ROM DOWNLOAD FOR PDP
R903
10
C905 C908
220pF 220pF
50V 50V
READY READY
R902
10
C901 C906
D900
270pF 220pF
50V 50V
READY READY
RS232C
C902 C907
0 . 1 u F 0 . 1 u F
50V 50V
IC900
$0.179
MAX3232CDR
+3.3V_ST
R900 R901
4.7K 4.7K
RS232C_TXD
RS232C_RXD
R904
100
PJ230
0
R998
PC_SER_DATA
R999 0
PC_SER_CLK
D914 D915 PJ230
30V
30V
PJ230 PJ230 READY
C903 220pF 50V
C904 220pF 50V
READY
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2010 LG Electronics Inc. All rights reserved.
Only for training and service purposes
L902
+3.3V_AVDD
L904
R917
C914
D909 0.1uF
16V
30V
READY
READY
R915
22
L905
C916
10pF
R916
22 50V
C917
10pF
50V
IC901
+3.3V_AVDD
AT24C02BN-10SU-1.8
R975
1K
PC_SER_DATA
PC_SER_CLK
R976
D901
1K
+3.3V_ST
PC AUDIO
C909
0 . 1 u F
50V
C910
250_350
0 . 1 u F
50V JK900
PEJ027-01
C911
0 . 1 u F
50V
D902
ADUC30S03010L_AMODIODE
30V
D903
ADUC30S03010L_AMODIODE
30V
F o r 2 3 0 D e b u g g i n g
IR
READY 100K
C
R919
DDC_SCL/UART_RX
Q900 B
2SC3052
100K
E DDC_SDA/UART_TX
R920
DSUB_R
DSUB_R-
DDC_SDA/UART_TX
DSUB_G
DSUB_G-
1K
DSUB_DET
DSUB_B
DSUB_B-
MOD_ROM_TX
DSUB_HSYNC
DSUB_VSYNC
R962
SDA1_1
HD
RXB0+
RXB1+
DDC_SCL/UART_RX RXB2+
RXBCK+
RXB3+
RXB4+
PC_SER_DATA
250_350
+5V_ST
1 8 R924
4.7K
2 7
R929
EDID_WP
0
3 6 DDC_SCL/UART_RX
R930
0
4 5 DDC_SDA/UART_TX
C918 R932
18pF 0
RGB_DDC_SCL
50V
R934
0
RGB_DDC_SDA
E_SPRING
3
T_TERMINAL1
6A
B_TERMINAL1
7A
PC_RIN
R931
D910
R_SPRING C920
10K
4
820pF
5.6V
R926 R935
12K
T_SPRING 470K
5
B_TERMINAL2
7B
PC_LIN
R933
C921
D911
T_TERMINAL2 10K
6B 820pF
R927
5.6V
R936
470K
12K
LED_RED
SUB_SCL
PJ230
P906 SUB_SDA
12507WR-03L
PJ230
R980 0
1
R981 0
2
PJ230
3
LED_WHITE
4
+3.3V +3.3V
R956
R957 R958 R951 R952
4.7K 0 4.7K 4.7K
0
R959 22
SDA1
Q904 Q903
2N7002(F)
2N7002(F)
HD
P903
+3.3V +3.3V
SMW200-26C
R963 R964
3.3K 3.3K
2 1
4 3
MOD_ROM_RX
6 5
8 7
22
10 9 R961 22
SCL1_1
HD
12 11
RXB0-
14 13
RXB1-
16 15
RXB2-
18 17
RXBCK-
20 19
RXB3-
22 21
RXB4-
24 23
PC_SER_CLK
R949 100
26 25
DISP_EN
HD
R960
27K
HD LVDS
S U B B o a r d I / F
+5V_ST
P902
12507WS-12L
R910
+3.3V_ST
4.7K
1
IR
C925
10pF
2
R938 R941 L903
10K 10K
MLB-201209-0120P-N2
3
KEY1
L906 C930
MLB-201209-0120P-N2
10pF
4
KEY2
R937
4.7K
R945
C926
22
10pF 5
D913
+3.3V
C931
READY
6
R914 10pF
4.7K
R946
22
7
R909
4.7K READY
R947
C924 22
8
10pF
READY
C923
9
10pF
+3.3V_ST
READY
L900
MLB-201209-0120P-N2
10
+3.3V
C927
L901
0 . 1 u F
MLB-201209-0120P-N2
16V 11
R939
L907
4.7K C932
MLB-201209-0120P-N2
0 . 1 u F
12
16V
C933
10pF
FHD LVDS
R953
4.7K
FHD
22
R954
SCL1
52
51
50
PC_SER_CLK
49 PC_SER_DATA
R968 FHD 22
48
SCL1_1
R969 FHD 100
47
DISP_EN
R970 FHD 22
46
SDA1_1
45
44
43
42
41
40 RXA0+
39
RXA0-
38
RXA1+
37
RXA1-
36 RXA2+
35
RXA2-
34
33
RXACK+
32
RXACK-
31
30 RXA3+
29
RXA3-
28
RXA4+
27
RXA4-
26
25
24
RXB0+
23
RXB0-
22 RXB1+
21
RXB1-
20
RXB2+
19
RXB2-
18
17 RXBCK+
16
RXBCK-
15
14
RXB3+
13
RXB3-
12 RXB4+
11
RXB4-
10
9
8
7
6
5
4
MOD_ROM_TX
3 MOD_ROM_RX
2
1
TF05-51S
P904
13
EAX61141601
LVDS/RS232//RGB
9 1 3
LGE Internal Use Only