Read LG 26LG40 (CHASSIS:LA89D) Service Manual online
100
R440
SIFM0
001:C9
2.2K
R400
IF_P
0.1uF
50V
C408
+3.3V_AVDD
12K
READY
R412
OPT
R406
C439
READY
100
R437
VROA
+3.3V_PVSB
1000pF
50V
C404
0
R415
SCL_TU
TS[0-7]
100
R4
34
C440
READY
100
R410
READY
+5V_TUNER
MSCL
1K
R428
IF_N
33uF
1
0
V
READY
C407
0.1uF
C418
47K
R446
IF_AGC
MSDA
470
READY
R416
1K
R427
470
R431
PV
100
READY
R417
10K
R403
+3.3V_DVDD
+3.3V_PVSB
VSB_RESET
TS_SYNC
510
R419
R E
A D
Y
0.1uF
C425
R430
R E
A D
Y
SDA_TU
IF_N
+3.3V_AVDD
1K
R426
TS_VALID
1uF 25V
C441
100
R409
READY
TS_CLK
VRMA
VRPA
0.01uF
50V
C409
0.01uF
C419
SDA_TU
V R
P A
100
READY
R438
100
R436
510
R420
R E
A D
Y
VROA
0
R401
10K
READY
R413
4.7K
R405
1/10W
12K
5 %
R402
100 RE
A D
YR435
+3.3V_AVDD
0.1uF 50V
C411
47
R411
+5V_TU
+3.3V_DVDD
4.7K
R407
100
R425
READY
LGDT3304
IC400
1
VR0A
2
VRMA
3
VINA2
4
VINA1
5
INCAP
6
VSSAAD10A
7
I2CSEL
8
VSS_1
9
ANTCON
10
VDD_1
11
I2CRPT_SCL
12
VDD33_1
13
I2CRPT_SDA
14
VSS33_1
15
IFOUT
16
RFOUT
17
TPERR
18
VDD33_2
19
TPVALID
20
TPDATA[0]
21
VSS33_2
22
TPDATA[1]
23
VSS_2
24
TPDATA[2]
25
VDD_2
26
TPDATA[3]
27
TPDATA[4]
28
TPDATA[5]
29
TPDATA[6]
30
VDD33_3
31
TPDATA[7]
32
VSS33_3
33
TPCLK
34
TPSOP
35
NIRQ
36
SDA
37
VDD33_4
38
SCL
39
VSS_3
40
TDO
41
VDD_3
42
TRST
43
VSS33_4
44
TCK
45
TDI
46
PLLAVDD
47
PLLAVSS
48
TMS
49
N R
S T
50
O PM
51
VDD33_5
52
SLIM_SCAN
53
VSS33_5
54
XTALI
55
X T
A L
O
56
VSS_4
57
X M
58
VDD_4
59
VSSDAD10
60
V C
C D
A D
1 0
61
V C
C A
A D
1 0A
62
T A
V D
D
63
TAVSS
64
V R
P A
0
R422
0.1uF
50V
C401
0.01uF
50V
C400
READY
R414
SCL_TU
+1.2V_PVSB
IF_P
IF_AGC
LD400
PV
TUNER_CVBS
001:C10
25MHz
X400
+1.2V_DVDD
1M
R433
5.1K
R423
SIF
001:C9
+3.3V_DVDD
READY
R432
+5V_TU
100
R442
0.01uF
C420
33uF
10V
C402
+5V_TU
+3.3V_AVDD
+5V_TU
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.
+1.2V_DVDD
VRMA
470
R408
0
R421
510
R418
R E
A D
Y
100
R441
0.047uF
C422
1N4148W D401
3216
10uF
16V
C426
3216
10uF
16V
C431
3216
10uF
16V
C413
0.1uF
C424
2.2uF
16V
C410
2.2uF 16V
C421
2.2uF
16V
C423
27pF
C433
27pF
C435
MSDA
MSCL
0
5%
1/4W
R429
10K
R404
0
R449
1uF
10V
C415
1uF
10V
C417
1uF
10V
C414
1uF
10V
C416
1uF
10V
C430
1uF
10V
C427
1uF
10V
C429
1uF
10V
C428
1uF
10V
C437
1uF
10V
C434
1uF
10V
C432
1uF
10V
C436
1uF
10V
C438
47
R424
READY
0.1uF
50V
C442
0.1uF
50V
C443
0.047uF 50V
C412
VCOM0
001:C10
100
R1129
TDVF-H051F
TU401
14
SIF
13
AUDIO_OUT
5
NC_2
12
IF_AGC
11
DIGITAL_IF2
2
RF_AGC
10
DIGITAL_IF1
4
VTU
1
NC_1
9
AS
8
SCL
3
+B[5V]
16
VIDEO_OUT
7
SDA
6
GND
15
IF_AS
17
SHIELD
2SA1530A-T112-1R
Q400
E
B
C
2SC3052
READY
Q401
E
B
C
500-ohm
L400
500-ohm
L401
500-ohm
L405
500-ohm
L406
CM2012F6R8KT
L402
CM2012F6R8KT
READY
L403
CM3216F100KE
L903
R E
A D
Y
82pF
50V
C1715
READY
TP1107
TP1256
220
R447
220
R448
220pF 50V
C403
220pF
50V
C405
220
R444
220
R445
270nH
L407
47pF
50V
C406
TS[7]
TS[5]
TS[3]
TS[1]
TS[6]
TS[2]
TS
[0
-7
]
TS[4]
TS[0]
Analog input
TUNER B+ BLOCK
VSB +1.0V B+ BLOCK
VSB +3.3V B+ BLOCK
2007.12.26
4 9
Tuner/Demodulator
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