Read LG 42LF7300 Service Manual online
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
SC1_R_OUT_O
SC1_RI
SC1_RO
SC1_RO
SC1_BLUE
SC1_LO
SC1_GREEN
SC1_BLUE
SC1_LI
SC1_LI
SC1_RED
SC1_GREEN
SC1_RED
SC1_FB
SC1_R_OUT_O
SC1_L_OUT_O
OPAMP_P
OPAMP_P
SC1_L_OUT_O
SC1_FB
SC1_RO
SC1_LO
SC1_RI
SC1_LI
SC_ID1
SC_ID1
+3V3_A
+12V
+3V3_A
+3V3_A
+5VSTB
+3V3_A
+12VOP
+12VOP
SCART1_CVBS 9
SCART1_LI
9
SCART1_RI
9
SCART1_R
9
SCART1_G
9
SCART1_B
9
SCART1_ID
5
SCART1_RO
9
SCART1_LO
9
OPAMP_P
16
SC1_CVBSO
9
FB1
9
SC_MUTE
2
SCART1_LINK
5
AC_DETECT
1,2,18
SC2_MUTE
16,18
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-15
10
CONN[SCART1]
LGE HD T+C
LF7300
15
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-15
10
CONN[SCART1]
LGE HD T+C
LF7300
15
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-15
10
CONN[SCART1]
LGE HD T+C
LF7300
15
43
Wednesday, April 15, 2009
8Pin(Function Select/Slow Switching)
9.5V ~ 12V --> 4:3 Mode
4.5V ~ 7V -->16:9 Mode
0V ~ 2V --> TV Mode
9.5V ~ 12V --> 4:3 Mode
4.5V ~ 7V -->16:9 Mode
0V ~ 2V --> TV Mode
16Pin(RGB Control/Fast Blanking)
1V ~ 3V -->RGB Mode
0V ~ 0.4V -->CVBS Mode
1V ~ 3V -->RGB Mode
0V ~ 0.4V -->CVBS Mode
R700
750/F/1005
750/F/1005
R700
750/F/1005
750/F/1005
C256
10uF/16V/MVK/S
10uF/16V/MVK/S
C256
10uF/16V/MVK/S
10uF/16V/MVK/S
C254
102p/50V/1005
102p/50V/1005
C254
102p/50V/1005
102p/50V/1005
R275
103/1005
103/1005
R275
103/1005
103/1005
Q27
KTD1304
Q27
KTD1304
2
1
3
R702
750/F/1005
750/F/1005
R702
750/F/1005
750/F/1005
+
-
+
-
U22
TL072CD
TL072CD
+
-
+
-
U22
TL072CD
TL072CD
2
3
6
5
1
7
8
4
R288
683/F/1005
683/F/1005
R288
683/F/1005
683/F/1005
C156
10uF/16V/MVK/S
C156
10uF/16V/MVK/S
L36
CIL21J1R8KNE
CIL21J1R8KNE
L36
CIL21J1R8KNE
CIL21J1R8KNE
RV16
SV060305E101N
SV060305E101N
RV16
SV060305E101N
SV060305E101N
R273
750/F/1005
750/F/1005
R273
750/F/1005
750/F/1005
C339
OPEN-330p/50V/1005
C339
OPEN-330p/50V/1005
R264
750/F/1005
R264
750/F/1005
-
+
U21A
LM393MX
LM393MX
-
+
U21A
LM393MX
LM393MX
3
2
1
8
4
R270
750/F/1005
750/F/1005
R270
750/F/1005
750/F/1005
L38
CIL21J1R8KNE
CIL21J1R8KNE
L38
CIL21J1R8KNE
CIL21J1R8KNE
C155
10uF/16V/MVK/S
C155
10uF/16V/MVK/S
R290
103/1005
R290
103/1005
RV11
SV060305E101N
SV060305E101N
RV11
SV060305E101N
SV060305E101N
C252
OPEN-331p/50V/1005
OPEN-331p/50V/1005
C252
OPEN-331p/50V/1005
OPEN-331p/50V/1005
R274
4021/F/1005
4021/F/1005
R274
4021/F/1005
4021/F/1005
R287
153/F/1005
R287
153/F/1005
RV14
SV060305E101N
SV060305E101N
RV14
SV060305E101N
SV060305E101N
R282
224/1005
224/1005
R282
224/1005
224/1005
R294
473/1005
473/1005
R294
473/1005
473/1005
R292
103/1005
103/1005
R292
103/1005
103/1005
R291
103/1005
103/1005
R291
103/1005
103/1005
Q29
MMBT4401
Q29
MMBT4401
1
2
3
Q28
MMBT4401
Q28
MMBT4401
1
2
3
C259
100p/50V/1005
100p/50V/1005
C259
100p/50V/1005
100p/50V/1005
R280
101/1005
R280
101/1005
C154
106p/25V/3216
106p/25V/3216
C154
106p/25V/3216
106p/25V/3216
R285
101/1005
R285
101/1005
R269
102/1005
R269
102/1005
RV18
OPEN-SV060314B431N
OPEN-SV060314B431N
RV18
OPEN-SV060314B431N
OPEN-SV060314B431N
RV34
SV060305E101N
SV060305E101N
RV34
SV060305E101N
SV060305E101N
Q26
MMBT4403
Q26
MMBT4403
1
2
3
C257
47uF/25V/BLA/S
47uF/25V/BLA/S
C257
47uF/25V/BLA/S
47uF/25V/BLA/S
R284
153/F/1005
R284
153/F/1005
C255
102p/50V/1005
102p/50V/1005
C255
102p/50V/1005
102p/50V/1005
R703
103/1005
103/1005
R703
103/1005
103/1005
R701
000/1005
R701
000/1005
RV19
OPEN-SV060314B431N
OPEN-SV060314B431N
RV19
OPEN-SV060314B431N
OPEN-SV060314B431N
JP14
PSC003-05
PSC003-05
JP14
PSC003-05
PSC003-05
AOR
1
AIR
2
AOL
3
GND(A)
4
GND(B)
5
AIL
6
BLUE
7
FNS
8
GND(G)
9
DATA2
10
GREEN
11
DATA1
12
GND(R)
13
GND(D)
14
R/CHROMA
15
RGBC
16
GND(V)
17
GND(R)
18
C/LUMA
19
CVBSI
20
GND
21
GND
22
GND
23
ID
24
L37
CIL21J1R8KNE
CIL21J1R8KNE
L37
CIL21J1R8KNE
CIL21J1R8KNE
L39
BLM18PG300SN1D
BLM18PG300SN1D
L39
BLM18PG300SN1D
BLM18PG300SN1D
Q30
KTD1304
Q30
KTD1304
2
1
3
R293
102/1005
102/1005
R293
102/1005
102/1005
R286
224/1005
224/1005
R286
224/1005
224/1005
C260
104p/50V
104p/50V
C260
104p/50V
104p/50V
R296
103/1005
103/1005
R296
103/1005
103/1005
RV15
SV060314B431N
SV060314B431N
RV15
SV060314B431N
SV060314B431N
R281
104/1005
104/1005
R281
104/1005
104/1005
C157
100p/50V/1005
100p/50V/1005
C157
100p/50V/1005
100p/50V/1005
RV20
OPEN-SV060314B431N
OPEN-SV060314B431N
RV20
OPEN-SV060314B431N
OPEN-SV060314B431N
R271
303/1005
R271
303/1005
R263
750/F/1005
750/F/1005
R263
750/F/1005
750/F/1005
R276
224/1005
224/1005
R276
224/1005
224/1005
C250
OPEN-331p/50V/1005
OPEN-331p/50V/1005
C250
OPEN-331p/50V/1005
OPEN-331p/50V/1005
RV12
SV060305E101N
SV060305E101N
RV12
SV060305E101N
SV060305E101N
-
+
U21B
LM393MX
LM393MX
-
+
U21B
LM393MX
LM393MX
5
6
7
8
4
C249
OPEN-331p/50V/1005
OPEN-331p/50V/1005
C249
OPEN-331p/50V/1005
OPEN-331p/50V/1005
RV13
SV060305E101N
SV060305E101N
RV13
SV060305E101N
SV060305E101N
R277
162/F/1005
162/F/1005
R277
162/F/1005
162/F/1005
R295
102/1005
102/1005
R295
102/1005
102/1005
L40
CIL21J1R8KNE
CIL21J1R8KNE
L40
CIL21J1R8KNE
CIL21J1R8KNE
C258
102p/50V/1005
102p/50V/1005
C258
102p/50V/1005
102p/50V/1005
C341
OPEN-330p/50V/1005
C341
OPEN-330p/50V/1005
R278
224/1005
224/1005
R278
224/1005
224/1005
R283
683/F/1005
683/F/1005
R283
683/F/1005
683/F/1005
R704
000/1005
R704
000/1005
R289
103/1005
R289
103/1005
R279
104/1005
104/1005
R279
104/1005
104/1005
C158
102p/50V/1005
102p/50V/1005
C158
102p/50V/1005
102p/50V/1005
C159
10uF/16V/MVK/S
10uF/16V/MVK/S
C159
10uF/16V/MVK/S
10uF/16V/MVK/S
R272
103/1005
103/1005
R272
103/1005
103/1005
RV17
OPEN-SV060314B431N
OPEN-SV060314B431N
RV17
OPEN-SV060314B431N
OPEN-SV060314B431N
C253
104p/16V/1005
C253
104p/16V/1005
C251
104p/16V/1005
C251
104p/16V/1005
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
SC2_RI
SC2_RO
SC2_RO
SC2_LO
SC2_L_OUT_O
SC2_LI
SC2_R_OUT_O
SC2_R_OUT_O
SC2_L_OUT_O
SC2_LO
SC2_LI
SC2_RO
SC2_RI
SC_ID2
SC_ID2
+12V
+3V3_A
SCART2_CVBS 9
SCART2_LI
9
SCART2_RI
9
SC2_CVBSO
9
SCART2_ID
5
OPAMP_P
15
SCART2_RO
9
SCART2_LO
9
SCART2_LINK
4
SC2_MUTE
15,18
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-16
10
CONN[SCART2]
LGE HD T+C
LF7300
16
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-16
10
CONN[SCART2]
LGE HD T+C
LF7300
16
43
Wednesday, April 15, 2009
Title
Size
Document Number
Rev
Date:
Sheet
of
LF7300-MAIN-16
10
CONN[SCART2]
LGE HD T+C
LF7300
16
43
Wednesday, April 15, 2009
8Pin(Function Select/Slow Switching)
9.5V ~ 12V --> 4:3 Mode
4.5V ~ 7V -->16:9 Mode
0V ~ 2V --> TV Mode
9.5V ~ 12V --> 4:3 Mode
4.5V ~ 7V -->16:9 Mode
0V ~ 2V --> TV Mode
16Pin(RGB Control/Fast Blanking)
1V ~ 3V -->RGB Mode
0V ~ 0.4V -->CVBS Mode
1V ~ 3V -->RGB Mode
0V ~ 0.4V -->CVBS Mode
C275
10uF/16V/MVK/S
10uF/16V/MVK/S
C275
10uF/16V/MVK/S
10uF/16V/MVK/S
C277
102p/50V/1005
102p/50V/1005
C277
102p/50V/1005
102p/50V/1005
R304
224/1005
224/1005
R304
224/1005
224/1005
C279
100p/50V/1005
100p/50V/1005
C279
100p/50V/1005
100p/50V/1005
C272
104p/50V
104p/50V
C272
104p/50V
104p/50V
RV21
SV060305E101N
SV060305E101N
RV21
SV060305E101N
SV060305E101N
R308
101/1005
R308
101/1005
R299
103/1005
103/1005
R299
103/1005
103/1005
RV35
SV060305E101N
SV060305E101N
RV35
SV060305E101N
SV060305E101N
C278
10uF/16V/MVK/S
C278
10uF/16V/MVK/S
R301
303/1005
R301
303/1005
L45
CIL21J1R8KNE
CIL21J1R8KNE
L45
CIL21J1R8KNE
CIL21J1R8KNE
R312
102/1005
102/1005
R312
102/1005
102/1005
R307
683/F/1005
683/F/1005
R307
683/F/1005
683/F/1005
R297
750/F/1005
750/F/1005
R297
750/F/1005
750/F/1005
R306
224/1005
224/1005
R306
224/1005
224/1005
R310
224/1005
224/1005
R310
224/1005
224/1005
C161
102p/50V/1005
102p/50V/1005
C161
102p/50V/1005
102p/50V/1005
RV24
OPEN-SV060314B431N
OPEN-SV060314B431N
RV24
OPEN-SV060314B431N
OPEN-SV060314B431N
RV23
OPEN-SV060314B431N
OPEN-SV060314B431N
RV23
OPEN-SV060314B431N
OPEN-SV060314B431N
C271
102p/50V/1005
102p/50V/1005
C271
102p/50V/1005
102p/50V/1005
R298
750/F/1005
R298
750/F/1005
L44
BLM18PG300SN1D
BLM18PG300SN1D
L44
BLM18PG300SN1D
BLM18PG300SN1D
Q31
KTD1304
Q31
KTD1304
2
1
3
RV26
OPEN-SV060314B431N
OPEN-SV060314B431N
RV26
OPEN-SV060314B431N
OPEN-SV060314B431N
C276
10uF/16V/MVK/S
C276
10uF/16V/MVK/S
R303
224/1005
224/1005
R303
224/1005
224/1005
C269
102p/50V/1005
102p/50V/1005
C269
102p/50V/1005
102p/50V/1005
C343
OPEN-330p/50V/1005
C343
OPEN-330p/50V/1005
R309
153/F/1005
R309
153/F/1005
RV22
SV060314B431N
SV060314B431N
RV22
SV060314B431N
SV060314B431N
+
-
+
-
U23
TL072CD
TL072CD
+
-
+
-
U23
TL072CD
TL072CD
2
3
6
5
1
7
8
4
L41
CIL21J1R8KNE
CIL21J1R8KNE
L41
CIL21J1R8KNE
CIL21J1R8KNE
R706
000/1005
R706
000/1005
R305
101/1005
R305
101/1005
R311
153/F/1005
R311
153/F/1005
R302
103/1005
103/1005
R302
103/1005
103/1005
L43
CIL21J1R8KNE
CIL21J1R8KNE
L43
CIL21J1R8KNE
CIL21J1R8KNE
R300
102/1005
R300
102/1005
C160
104p/16V/1005
104p/16V/1005
C160
104p/16V/1005
104p/16V/1005
JP15
PSC003-05
PSC003-05
JP15
PSC003-05
PSC003-05
AOR
1
AIR
2
AOL
3
GND(A)
4
GND(B)
5
AIL
6
BLUE
7
FNS
8
GND(G)
9
DATA2
10
GREEN
11
DATA1
12
GND(R)
13
GND(D)
14
R/CHROMA
15
RGBC
16
GND(V)
17
GND(R)
18
C/LUMA
19
CVBSI
20
GND
21
GND
22
GND
23
ID
24
C342
OPEN-330p/50V/1005
C342
OPEN-330p/50V/1005
C270
10uF/16V/MVK/S
10uF/16V/MVK/S
C270
10uF/16V/MVK/S
10uF/16V/MVK/S
C274
100p/50V/1005
100p/50V/1005
C274
100p/50V/1005
100p/50V/1005
R314
102/1005
102/1005
R314
102/1005
102/1005
C273
106p/25V/3216
106p/25V/3216
C273
106p/25V/3216
106p/25V/3216
RV25
OPEN-SV060314B431N
OPEN-SV060314B431N
RV25
OPEN-SV060314B431N
OPEN-SV060314B431N
R313
683/F/1005
683/F/1005
R313
683/F/1005
683/F/1005
Q32
KTD1304
Q32
KTD1304
2
1
3
L42
CIL21J1R8KNE
CIL21J1R8KNE
L42
CIL21J1R8KNE
CIL21J1R8KNE
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