LG 32LD660 / 32LD665H (CHASSIS:LA05C) Service Manual ▷ View online
- 21 -
LV
1
200
LV
2
300
400
540
900
910
810
520
530
800
500
A10
A5
A2
120
510
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
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.
1
R117
BLM18PG121SN1D
L110
+3.3V_TU
AZ1117BH-ADJTRE1
IC101
1
ADJ/GND
2
OUTPUT
3
INPUT
120
R112
+3.3V_TU
+3.3V
0 . 1 u F
16V
C121
OPT
+1.26V_TU
0 . 1 u F
16V
C120
O_BRCM_PKT0_SYNC
10:M27
SCL2
9 : A L 1 4 ; 1 5 : C 2 0
47pF
50V
50V
C145
+3.3V
+1.2V_DVDD_PDMOD
I2CRPT_SCL_3305
M19
+3.3V_AVDD_PDMOD
+3.3V_DVDD_PDMOD
IF_N_3305
H13
BLM18PG121SN1D
L101
1K
R123
SDA2
9 : A L 1 4 ; 1 5 : C 2 0
I2CRPT_SDA_3305
M19
0
R105
IF_P_3305
H12
1K
R122
TP_ERR
8 : P 2 0
47pF
50V
50V
C146
+D_1.2V
NFM18PS105R0J
6.3V
C160
OUT
IN
GND
22
R116
BLM18PG121SN1D
L109
+1.2V_DVDD_PDMOD
0
R103
47pF
50V
50V
C144
+3.3V_AVDD_PDMOD
25MHz
X100
LGDT3305
IC102
1
NC_1
2
VINA2
3
VINA1
4
INCAP
5
VSSAAD10A
6
I2CSEL
7
ANTCON
8
VDD_1
9
I2CRPT_SCL
10
I2CRPT_SDA
11
IFOUT
12
RFOUT
13
TPERR
14
VDD33_1
15
TPVALID
16
TPDATA[0]
17
VSS33_1
18
TPDATA[1]
19
TPDATA[2]
20
TPDATA[3]
21
TPDATA[4]
22
TPDATA[5]
23
TPDATA[6]
24
TPDATA[7]
25
TPCLK
26
TPSOP
27
NIRQ
28
SDA
29
VDD33_2
30
SCL
31
VSS_1
32
VDD_2
33
VSS_2
34
VSS33_2
35
PLLAVDD
36
PLLAVSS
37
NRST
38
OPM
39
VDD33_3
40
NC_2
41
VSS33_3
42
XTALI
43
XTALO
44
VSS_3
45
XM
46
VDD_3
47
VSSDAD10
48
VCCAAD10A
+3.3V
O_BRCM_PKT0_CLK
10:M27
IF_AGC_3305
H13
22
R115
100
R121
1M
R125
NFM18PS105R0J
6.3V
C136
OUT
IN
GND
O_BRCM_PKT0_DATA
10:M27
+3.3V_DVDD_PDMOD
NFM18PS105R0J
6.3V
C150
OUT
IN
GND
+3.3V_AVDD_PDMOD
47K
R134
IF_N_3305
Z23
I2CRPT_SDA_3305
Z21
270
R144
+3.3V_TU
+5V_DEVICE
1/10W
120
5%
R126
C106
OUT
IN
GND
4.7K
R133
ISA1530AC1
Q101
E
B
C
TU_SIF_INCM
1 1 : E 1 1
TUNER_MAIN_RESET
9 : A J 2 1
+5V_DEVICE
TU_SIF
11:B11
+5V_DEVICE
0
R100
0
R110
ISA1530AC1
Q100
E
B
C
1/10W
200
5%
R136
BLM18PG121SN1D
L100
4.7K
R139
IF_P_3305
Z23
1/10W
200
5%
R114
I2CRPT_SCL_3305
Z22
C107
OUT
IN
GND
0 . 1 u F
16V
C129
IF_AGC_3305
Z21
+1.26V_TU
+5V_DEVICE
NFM18PS105R0J
6.3V
C113
OUT
IN
GND
470
R130
4.7K
R132
TUNER_CVBS
15:B19
TDVJ-H131F
TU100
TUNER
14
3.3V
13
1.2V
5
N.C
12
GND
11
CVBS
2
N.C
10
N.C
4
N.C
1
N.C
17
IF_N
9
S I F
8
N.C
3
+5V
16
IF_AGC
7
SDA
6
SCL
15
RESET
18
I F _ P
SHIELD
19
220
R129
220
R128
100
R119
100
R118
82
R102
0 . 1 u F
C104
0 . 1 u F
16V
C105
0 . 1 u F
16V
C112
0 . 1 u F
C132
0 . 1 u F
C130
0 . 1 u F
16V
C138
0 . 1 u F
C111
0 . 1 u F
16V
C110
0 . 1 u F
16V
16V
C143
0 . 1 u F
C108
0 . 1 u F
16V
16V
C109
0 . 1 u F
16V
16V
C133
0 . 1 u F C128
10uF
C100
OPT
10uF
6.3V
6.3V
C101
OPT
10uF
6.3V
C102
OPT
10uF
6.3V
C141
1uF
6.3V
6.3V
C103
22pF
50V
50V
C115
22pF
50V
C116
22uF
6.3V
C123
27pF
50V
50V
C122
27pF
50V
C119
L103
0 . 1 u F
16V
C127
OPT
1
18
32/37/42LD660H
Tuner/Demod.
2 0 1 0 . 1 2 . 1 3
R2
60mA
CLOSE TO LDO
R1
VOUT = VREF *(1+R2/R1)
VDD33
VDD1.0V
I2CSEL
CLOSE TO LGDT3305
VROA
VSS
TPVALID
TPERR
TPCLK
VSS
nRST
VSS33
CLOSE TO LGDT3305
XTALO
XM
RF OUT
VSSAAD10A
VINA2
i n p u t ; D i g i t a l I O
I2CRPT_SDA
I 2 C : 0 x 1 C , 0 x B 2 ( s e l 0 )
VINA1
PLLAVDD
CLOSE TO LGDT3305
VDD
NIRQ
TPDATA[0]
TPDATA[7]
VSS
MIN 1ms
VSS33
TPDATA[6]
VDD33
TPDATA[5]
Dmodulator +3.3V B+ BLOCK
VDD
MIN 1ms
SCL
I2CRPT_SCL
PLLAVSS
VDD
VDD33
VSSAD10
MIN 1ms
NRST
TPSOP
Dmodulator +1.0V B+ BLOCK
XTALI
TO BCM3549(for IP PPV)
INCAP
OPM
SDA
SLIM_SCAN
MIN 10ms
TPDATA[2]
ANTCON
VSS33
VDD3.3V
VCCAAD10A
TPDATA[1]
TPDATA[4]
IF OUT
c a u t i o n : D e m o d u l a t o r P o w e r S e q u e n c e
TPDATA[3]
T r a c e a l o n g s i d e T U _ S I F s i g n a l
A p p l i c a t i o n
P l a c e T P / r e s i s t o r n e a r T U N E R c o n n e c t o r
T u n e r / D e m o d u l a t o r
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.
22
R201
HDMI0_HPD_GPIO
9 : A J 1 7
JP204
HDMI0_PWR_GPIO
9 : A J 1 8
TMDS0_RX1-
11:W15
TMDS1_RX0-
11:V10
EAG59023302
JK201
14
NC
13 CE_REMOTE
5
D1_GND
20
SHIELD
GND
12
CK-
11 CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17 GND
9
D0-
8
D0_GND
3
D2-
16 DDC_DATA
7
D0+
6
D1-
15 DDC_CLK
22
R243
22
R209
22
R240
HDMI1_PWR_GPIO
9 : A J 1 7
TMDS0_RX2-
11:W15
TMDS1_RX2-
11:V10
SDA_HDMI_0
11:AA16
TMDS0_RXC+
11:W16
1K
R226
22
R259
TMDS0_RX1+
11:W15
22
R251
22
R229
22
R241
22
R232
TMDS1_RX1+
11:V10
22
R239
TMDS1_RX0+
11:V10
+5V_DEVICE
22
R220
22
R242
TMDS0_RXC-
11:W16
TMDS0_RX2+
11:W15
+5V_DEVICE
TMDS1_RX2+
11:V9
22
R214
SCL_HDMI_1
11:AA11
22
R200
SCL_HDMI_0
11:AA17
TMDS1_RX1-
11:V10
HDMI1_HPD_GPIO
9 : A J 1 7
TMDS1_RXC+
11:V11
22
R211
1K
OPT
R206
22
R249
1K
R252
22
R246
JP203
22
R210
SDA_HDMI_1
11:AA11
TMDS0_RX0+
11:W15
1K
OPT
R231
TMDS0_RX0-
11:W16
22
R234
TMDS1_RXC-
11:V11
22
R233
EAG59023302
JK200
14
NC
13 CE_REMOTE
5
D1_GND
20
SHIELD
GND
12
CK-
11 CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17 GND
9
D0-
8
D0_GND
3
D2-
16 DDC_DATA
7
D0+
6
D1-
15 DDC_CLK
D201
D200
HDMI
2
18
32/37/42LD660H
2 0 1 0 . 1 2 . 1 3
HDMI_0
HDMI_1
0 . 1 u F
50V
50V
C314
SPK_R+
AB24
SPK_R-
AI21
+3.3V
0 . 1 u F
50V
C318
SPK_R+
AI22
SPK_L+
AI23
3.3K
R301
SPK_L-
AI22
+1.8V_AMP
SPK_L-
AB27
SPK_R-
AB22
+1.8V_AMP
+24V
+24V
SPK_L+
AB29
0 . 1 u F
50V
50V
C319
10uF
6.3V
C306
OPT
0 . 1 u F
50V
C330
+1.8V_AMP
0 . 1 u F
50V
C329
0 . 0 1 u F
50V
C322
I2S_WORD_CLK
11:V25
SDA1
9 : A L 1 5 ; 8 : S 1 5 ; 1 5 : U 1 9 ;
1 8 : J 2 4
I2S_SDATA
11:W25
I2S_BIT_CLK
11:W25
SCL1
9 : A L 1 5 ; 8 : S 1 6 ; 1 5 : U 1 9 ;
1 8 : J 2 5
AUDIO_MAIN_CLK
9 : A B 2 6 ; 9 : A J 2 4
33pF
50V
50V
C309
33pF
50V
50V
C310
33pF
50V
50V
OPT
C344
4.7K
R327
4.7K
R325
0 . 1 u F
16V
C305
0 . 1 u F
16V
C307
0
R300
0
R353
1000pF
50V
C300
0 . 1 u F
16V
C343
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.
0 . 0 1 u F
50V
50V
C313
0 . 1 u F
50V
50V
C323
0
R354
/POWER_DET
9 : C 2 6 ; 9 : A J 2 6 ; 5 : T 8
+1.8V_AMP
+D_1.8V
SPDIF_OUT
11:U19
+3.3V
1K
R326
0 . 1 u F
C365
JP300
JP301
JP302
JP303
100
R306
100
R305
SMAW250-H04R
P300
1
R ( - )
2
R ( + )
3
L ( - )
4
L ( + )
100
R362
/AUDIO_RESET
9 : A I 9 ; 9 : A J 2 6
4.7K
R317
4.7K
R310
10uF
35V
35V
C324
BLM18PG121SN1D
L310
BLM18PG121SN1D
L308
BLM18PG121SN1D
L309
10uF
35V
35V
C341
12
R303
12
R309
12
R308
12
R302
390pF
50V
C317
390pF
50V
C316
12
R304
12
R307
12
R321
12
R320
390pF
50V
C326
390pF
50V
C327
THERMAL
NTP-7100
IC301
1
BST1A
2
VDR1A
3
/RESET
4
AD
5
DGND_1
6
GND_IO
7
CLK_I
8
VDD_IO
9
DGND_PLL
10
AGND_PLL
11
LF
12
AVDD_PLL
13
DVDD_PLL
14
GND
15
DGND_2
16
DVDD
17
SDATA
18
WCK
19
BCK
20
SDA
21
SCL
22
MONITOR0
23
MONITOR1
24
MONITOR2
25
/FAULT
26
VDR2B
27
BST2B
28
PGND2B_1
29
PGND2B_2
30
OUT2B_1
31
OUT2B_2
32
PVDD2B_1
33
PVDD2B_2
34
PVDD2A_1
35
PVDD2A_2
36
OUT2A_1
37
OUT2A_2
38
PGND2A_1
39
PGND2A_2
40
BST2A
41
VDR2A
42
NC
43
VDR1B
44
BST1B
45
PGND1B_1
46
PGND1B_2
47
OUT1B_1
48
OUT1B_2
49
PVDD1B_1
50
PVDD1B_2
51
PVDD1A_1
52
PVDD1A_2
53
OUT1A_1
54
OUT1A_2
55
PGND1A_1
56
PGND1A_2
57
EP_PAD
Fiber Optic
2F01TC1-CLM97-4F
JK300
3
VIN
2
VCC
1
GND
4
SHIELD
10.0uH
L306
10.0uH
L314
10.0uH
L307
10.0uH
L313
0 . 4 7 u F
50V
C328
0 . 4 7 u F
50V
C334
0 . 1 u F
C303
1000pF
50V
C302
100pF
50V
C301
10uF
6.3V
C308
OPT
10uF
6.3V
C304
OPT
1uF
6.3V
C311
1uF
6.3V
C335
1uF
6.3V
C337
1uF
6.3V
C340
2200pF
50V
C312
2200pF
50V
C339
2200pF
50V
C336
2200pF
50V
C338
BLM18PG121SN1D
L300
0 . 1 u F
16V
16V
OPT
C331
1uF
C325
4.7K
R366
+5V_DEVICE
BLM18PG121SN1D
L311
15pF
50V
C364
24K
R316
OPT
220uF
16V
16V
C320
AP1117EG-13
IC302
ADJ/GND
OUT
IN
0
R312
0 . 1 u F
C361
0 . 1 u F
50V
50V
C315
47K
R365
10uF
10V
10V
C332
AUD_LOUT-
11:U22
220uF
16V
16V
C321
4.7K
R367
0 . 1 u F
16V
16V
C367
AUD_LOUT+
11:U22
0
R356
10K
R364
+5V_EXT
+12V
1uF
16V
16V
C356
OPT
1.5K
R311
AMP_MUTE
4 : C 1 4
110
R314
+5V_DEVICE
SPEAK_OUT_L-
17:Y27
1.5K
R355
SPEAK_OUT_L+
17:Y26
15
R363
1
5%
R315
15
R334
330
R313
R313
15pF
50V
50V
C368
+5V_EXT
1uF
C363
THERMAL
TS4962
IC300
3
IN+
2
NC
4
I N -
1
STBY
5
OUT+
6
VCC
7
GND
8
OUT-
9
[EP]GND
SPEAKER_L
SPEAKER_R
SPDIF OUT
MCLK SDATA WCK BCK TP is necessory
PWM AUDIO AMP
I 2 C : 0 x 5 4
3
AUDIO
18
32/37/42LD660H
2 0 1 0 . 1 2 . 1 3
C l o s e t o I C
EXTERNAL SPK OUT
C470 Close to LDO
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