Read LG 55GA7900-UA (CHASSIS:LA37G) Service Manual online
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.
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.
CI_DATA[7]
EB_DATA[0]
CI_DATA[1]
CI_DATA[5]
CI_DATA[3]
CI_DATA[2]
CI_DATA[0-7]
CI_DATA[6]
EB_DATA[1]
EB_DATA[7]
CI_DATA[0]
EB_DATA[5]
EB_DATA[0-7]
EB_DATA[2]
EB_DATA[4]
EB_DATA[3]
CI_DATA[4]
EB_DATA[6]
TPO_DATA[3]
TPO_DATA[4]
TPO_DATA[0]
TPO_DATA[7]
TPO_DATA[1]
TPO_DATA[5]
TPO_DATA[6]
TPO_DATA[2]
CI_ADDR[9]
CI_DATA[1]
CI_IN_TS_DATA[6]
CI_ADDR[1]
CI_DATA[6]
CI_IN_TS_DATA[3]
CI_ADDR[5]
CI_ADDR[13]
CI_IN_TS_DATA[2]
CI_ADDR[8]
CI_ADDR[2]
CI_ADDR[3]
CI_ADDR[4]
CI_DATA[0]
CI_DATA[7]
CI_DATA[4]
CI_ADDR[12]
CI_ADDR[11]
CI_IN_TS_DATA[0]
CI_DATA[5]
CI_ADDR[14]
CI_DATA[3]
CI_DATA[2]
CI_ADDR[10]
CI_ADDR[0]
CI_IN_TS_DATA[1]
CI_ADDR[7]
CI_IN_TS_DATA[7]
CI_ADDR[6]
CI_IN_TS_DATA[4]
CI_IN_TS_DATA[5]
R913
0
OPT
CI_ADDR[13]
CI_ADDR[8]
CI_ADDR[7]
EB_ADDR[12]
/PCM_IOWR
EB_ADDR[0]
CI_ADDR[1]
EB_BE_N1
DIR
EB_ADDR[1]
CI_ADDR[11]
EB_ADDR[13]
CI_ADDR[9]
AR912
33
CI
AR913
33
CI
CI_ADDR[5]
CI_ADDR[2]
EB_OE_N
/PCM_OE
EB_ADDR[2]
EB_ADDR[10]
C903
0.1uF
16V
CI
/PCM_OE
AR915
33
CI
AR909
33
CI
EB_DATA[0-7]
CI_DATA[0-7]
+3.3V_NORMAL
EB_ADDR[6]
CI_ADDR[4]
/PCM_WE
EB_ADDR[5]
EB_ADDR[4]
EB_ADDR[8]
/PCM_IORD
AR911
33
CI
EB_ADDR[11]
EB_WE_N
EB_ADDR[3]
/PCM_IORD
CI_ADDR[0]
CI_ADDR[6]
IC904
74LVC245A
CI
3
A1
2
A0
4
A2
1
DIR
6
A4
5
A3
7
A5
8
A6
9
A7
10
GND
11
B7
12
B6
13
B5
14
B4
15
B3
16
B2
17
B1
18
B0
19
OE
20
VCC
CI_ADDR[14]
EB_ADDR[14]
C904
0.1uF
16V
CI
EB_BE_N0
DIR
EB_ADDR[7]
+3.3V_NORMAL
CI_ADDR[12]
CI_ADDR[3]
CAM_REG_N
EB_ADDR[9]
CI_ADDR[10]
AR914
33
CI
AR910
33
CI
/PCM_CE1
/PCM_REG
IC905
74LVC1G00GW
CI
3
GND
2
A
4
Y
1
B
5
VCC
TPO_CLK
TPO_VAL
TPO_ERR
TPO_DATA[0-7]
TPO_SOP
/PCM_WE
/PCM_OE
PCM_INPACK
+5V_CI_ON
CI_TS_CLK
CI_ADDR[0]
CI_ADDR[10]
/PCM_IORD
/PCM_CE1
CI_ADDR[8]
R6224
22
CI
CI_ADDR[14]
R6204
10K
OPT
/PCM_REG
CI_TS_DATA[1]
R6213
0
OPT
R6210
0
OPT
/PCM_IOWR
CI_ADDR[4]
R6211
10K
OPT
OPT
CI_TS_DATA[0]
/PCM_IRQA
/CI_CD1
CI_IN_TS_VAL
CI_TS_VAL
CI_ADDR[1]
CI_ADDR[11]
PCM_INPACK
CI_VS1
C6201
10uF
10V
10uF
10V
CI
CI_TS_DATA[3]
+5V_CI_ON
CI_TS_DATA[5]
R6243
22
OPT
R6249
0
OPT
CI_ADDR[9]
R6207
10K
CI
R6216
0
OPT
CI_TS_DATA[7]
+5V_CI_ON
/CI_CD2
R6208
10K
OPT
C6205
0.1uF
CI
CI_DATA[0-7]
R6205
10K
OPT
CI_TS_DATA[6]
R6206
10K
OPT
CI_TS_DATA[4]
CI_TS_SYNC
C6200
0.1uF
0.1uF
CI
R6209
10K
OPT
CI_TS_DATA[2]
CI_VS1
R6202
22
CI
+5V_CI_ON
R6203
22
CI
R6200
22 OPT
R6217
10K
OPT
CI_IN_TS_DATA[0-7]
CI_ADDR[7]
R6219
10K
OPT
+5V_CI_ON
CI_ADDR[3]
/PCM_CE2
R6245
10K
OPT
CI_ADDR[13]
+5V_CI_ON
R6212
0 CI
R6214
100
CI
R6246
10K
OPT
R6244
10K
CI
CI_ADDR[5]
/PCM_WAIT
CI_ADDR[2]
CI_ADDR[6]
R6215
100
CI
/PCM_CE2
CI_IN_TS_SYNC
PCM_RST
C6206
0.1uF
16V
CI
CI_IN_TS_CLK
CI_ADDR[12]
AR905
33
CI
AR903
33
CI
AR904
33
CI
CI_IN_TS_DATA[7]
CI_IN_TS_DATA[6]
CI_IN_TS_DATA[0]
CI_IN_TS_DATA[1]
CI_IN_TS_DATA[5]
CI_IN_TS_DATA[2]
CI_IN_TS_DATA[4]
CI_IN_TS_DATA[3]
CI_IN_TS_SYNC
CI_IN_TS_VAL
CI_IN_TS_CLK
TPI_DATA[7]
AR919
100
CI
CAM_CD1_N
CAM_INPACK_N
C905
0.1uF
16V
0.1uF
16V
CI
CI_TS_DATA[7]
AR921
100
CI
PCM_INPACK
CI_TS_DATA[2]
CI_TS_SYNC
C900
0.1uF
16V
CI
TPI_VAL
CAM_IREQ_N
TPI_DATA[4]
TPI_DATA[5]
TPI_DATA[2]
CAM_WAIT_N
/PCM_WAIT
TPI_DATA[0]
TPI_SOP
AR917
75
CI
/CI_CD1
TPI_DATA[3]
CI_TS_DATA[1]
/CI_CD2
CI_TS_CLK
CI_TS_DATA[5]
R915
10K
CI
AR916 75
CI
/PCM_IRQA
CI_TS_VAL
CI_TS_DATA[4]
CI_TS_DATA[0]
CAM_CD2_N
TPI_DATA[6]
AR918 75
CI
TPI_CLK
R916
10K
CI
IC903
74LVC16244ADGG
CI
26
4A3
27
4A2
28
GND_5
29
4A1
30
4A0
31
VCC_3
32
3A3
33
3A2
34
GND_6
35
3A1
36
3A0
37
2A3
38
2A2
39
GND_7
40
2A1
41
2A0
42
VCC_4
43
1A3
44
1A2
45
GND_8
46
1A1
47
1A0
48
2OE
17
3Y4
3
1Y1
6
1Y3
16
3Y2
15
GND_3
14
3Y1
13
3Y0
12
2Y3
11
2Y2
10
GND_2
9
2Y1
8
2Y0
7
VCC_1
4
GND_1
5
1Y2
25
3OE
24
4OE
23
4Y3
2
1Y0
22
4Y2
21
GND_4
1
1OE
20
4Y1
19
4Y0
18
VCC_2
+3.3V_NORMAL
TPI_DATA[1]
C906
0.1uF
16V
0.1uF
16V
CI
+5V_NORMAL
CI_TS_DATA[6]
AR920
100
CI
CI_TS_DATA[3]
P6200
10120698-015LF CI
G1
G2
57
TS_OUT_CLK
21
ADDR12
52
VPP
16
/IRQA
10
ADDR11
47
TS_IN0
41
TS_OUT7
5
DAT6
36
/CI_DET1
59
CI_WAIT
23
ADDR6
45
IOWR
54
TS_IN5
18
VPP
49
TS_IN2
43
VS1
13
ADDR13
7
/CARD_EN1
38
TS_OUT4
2
DAT3
25
ADDR4
56
TS_IN7
20
TS_IN_CLK
51
VCC
15
/WR_EN
9
/O_EN
46
TS_IN_SYN
40
TS_OUT6
4
DAT5
35
GND
58
CI_RESET
22
ADDR7
53
TS_IN4
17
VCC
11
ADDR10
48
TS_IN1
42
CARD_EN2
12
ADDR8
6
DAT6
37
TS_OUT3
1
GND
24
ADDR5
55
TS_IN6
19
TS_IN_VAL
50
TS_IN3
44
IORD
14
ADDR14
8
ADDR10
39
TS_OUT5
3
DAT4
26
ADDR3
60
INPACK
27
ADDR2
61
REG
28
ADDR1
62
TS_OUT_VAL
29
ADDR0
63
TS_OUT_SYN
30
DAT0
64
TS_OUT0
31
DAT1
32
DAT2
33
/IO_BIT
34
GND
65
TS_OUT1
66
TS_OUT2
67
/CI_DET2
68
GND
69
AND GATE => NAND GATE
IOWE=>IORD
CI HOST I/F
5V <=> 3.3V
WE=>OE
BUFFER FOR 5V => 3.3V
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