DOWNLOAD LG 32LN49XX / 32LN4900 (CHASSIS:LB35B) Service Manual ↓ Size: 6 MB | Pages: 58 in PDF or view online for FREE

Model
32LN49XX 32LN4900 (CHASSIS:LB35B)
Pages
58
Size
6 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln49xx-32ln4900-chassis-lb35b.pdf
Date

LG 32LN49XX / 32LN4900 (CHASSIS:LB35B) Service Manual ▷ View online

U
S
B
 
D
O
W
N
 
S
T
R
E
A
M
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.
INPUT2
JK202
3AU04S-305-ZC-(LG)
1
2
3
4
5
+5V_USB
ZD221
30V
READY
ZD220
30V
READY
USB_DP
USB_DN
C220
10uF
10V
OPT
C221
22uF
10V
L220
120
R204
0
W/O UART IC
C203
0.1uF
With UART IC
IC201
MAX3232CDR
EAN41348201
With UART IC
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
R205
0
W/O UART IC
R206
0
W/O UART IC
JK201
KJA-PH-1-0177
3
M3_DETECT
4
M4
5
M5_GND
1
M1
6
M6
C205
0.1uF
With UART IC
+3.5V_ST
C202
0.1uF
With UART IC
R202
100
With UART IC
+3.5V_ST
DSUB_SCL
C201
0.1uF
P201
12505WS-04A00
DEBUG
1
2
3
4
5
P202
12507WS-04L
1
VCC
2
PM_RXD
3
GND
4
RM_TXD
5
GND
DSUB_SDA
R201
100
With UART IC
C204
0.1uF
With UART IC
HDMI1_D0-
JK203
14
NC
13
CEC
5
DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
HDMI1_SCL
HDMI1_DET
Q230
MMBT3904(NXP)
E
B
C
R230
10K
D230
BAT54C
A
2
C
A
1
HDMI1_CK+
R233
2.7K
+5V_USB
R232
2.7K
HDMI1_D1-
R235
10K
R234
4.7K
HDMI1_D2+
HDMI1_D0+
HDMI1_CK-
HDMI1_SDA
HDMI1_D2-
HDMI1_HPD
R231
1K
HDMI1_D1+
D240
BAT54C
A
2
C
A
1
HDMI2_CK+
HDMI2_HPD
HDMI2_SCL
+5V_USB
HDMI2_D1-
HDMI2_CK-
Q240
MMBT3904(NXP)
E
B
C
R242
1K
R241
10K
HDMI2_D0-
HDMI2_D2-
HDMI2_D1+
R246
10K
JK204
14
NC
13
CEC
5
DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
HDMI2_SDA
R245
4.7K
HDMI2_DET
R243
2.7K
R244
2.7K
HDMI2_D2+
HDMI2_D0+
ZD230
READY
ZD231
READY
ZD232
READY
ZD233
READY
R236
100
R237
100
ZD240
READY
ZD241
READY
ZD242
READY
ZD243
READY
R247
100
R248
100
2  7
INPUT2
2012/11/15
32LN5100
LB35B/LC35B/LL35B
EAX65027101
Close to SIDE_USB
USB(SIDE)
I2C Control
HDMI(REAR)
THERMAL
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.
AUDIO
R357
6.8K
MNT_ROUT
Q351
MMBT3904(NXP)
E
B
C
R353
6.8K
R358
1K
C356
6800pF
50V
P_12V
MNT_R_AMP
MNT_L_AMP
R356
10K
C352
33pF 50V
IC302
AS324MTR-E1
3 INPUT1+
2 INPUT1-
4 VCC
1 OUT1
6 INPUT2-
5 INPUT2+
7 OUT2
8
OUT3
9
INPUT3-
10
INPUT3+
11
GND
12
INPUT4+
13
INPUT4-
14
OUT4
R354
5.6K
Q350
MMBT3904(NXP)
E
B
C
P_12V
C351
6800pF
50V
R359
4.7K
P_12V
R350
4.7K
C350
0.1uF
16V
C354
33pF 50V
MNT_LOUT
C355
0.1uF
16V
R352
10K
R355
5.6K
SPK_L+
SPK_R-
JP302
JP301
SPK_L-
JP304
SPK_R+
P301
SMAW250-H04R
1
.
2
3
4
JP303
SPK_R+
SPK_L-
C329
0.47uF
50V
R324
4.7K
R323
4.7K
0.1uF
C334
50V
0.1uF
C331
50V
R322
4.7K
C333
0.47uF
50V
SPK_R-
R325
4.7K
0.1uF
C330
50V
SPK_L+
0.1uF
C335
50V
R351
1K
C353
0.1uF
16V
R316
12
C306
33pF
50V
R307
100
C319
22000pF
50V
I2S_SCK
C315
22000pF
50V
C326
390pF
50V
R317
12
R314
12
R315
12
C312
1uF
10V
C302
0.1uF
16V
OPT
1uF
C303
10V
SW_RESET
AUAMP_SDA
0.1uF
C309
50V
C313
1uF
10V
0.1uF
C318
50V
+24V_AMP
C327
390pF
50V
I2S_WS
R306
100
C325
390pF
50V
C305
33pF
50V
R320
12
C301
0.1uF
16V
R318
12
C311
22000pF
50V
R311
100
C314
1uF
10V
C308
22000pF
50V
R319
12
+24V_AMP
I2S_SDO
C328
390pF
50V
R313
12
I2S_MCLK
AUAMP_SCL
C320
1000pF
50V
R308
4.7K
R309
4.7K
+3.3V_M
0.1uF
C322
16V
R301
100
R302
100
R303
100
L301
BLM18PG121SN1D
+3.3V_M
R304
100
C321
10uF
6.3V
L304
10uH
L305
10uH
L303
10uH
L306
10uH
POWER_DET
IC301
NTP7513
3
DGND_PLL
2
VDD_PLL
4
GND
1
AGND_PLL
6
DVDD
5
DGND
7
SDATA
8
WCK
9
BCK
10
SDA
11
SCL
12
FAULT
13
MONITOR_0
14
MONITOR_1
15
MONITOR_2
16
BST2B
17
PGND2B
18
OUT2B
19
PVDD2B
20
PVDD2A
21
OUT2A
22
PGND2A
23
BST2A
24
VDR2
25
AGND
26
VCC5
27
VDR1
28
BST1B
29
PGND1B
30
OUT1B
31
PVDD1B
32
PVDD1A
33
OUT1A
34
PGND1A
35
BST1A
36
RESET
37
AD
38
CLK_I
39
GND_IO
40
VDD_IO
41
[EP]GND
C317
10uF
35V
C310
10uF
35V
AUDIO
3  7
LB35B/LC35B/LL35B
32LN5100
2012/11/15
EAX65027101
AUDIO_OUT AMP : GAIN X 4
SPK_R+
SPK_L-
SPK_L+
SPK_R-
SPEAKER_R
SPEAKER_L
0x54
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.
TUNER & IR
IF_N
C402
47pF
50V
C403
47pF
50V
IF_P
R403
100
C401
0.1uF
16V
TUNER_RESET
R404
100K
+3.3V_TU
C410
0.1uF
16V
IF_AGC
R412
100
R410
1
1/10W
+3.3V_M
R409
1
1/10W
IC401
AP1117E18G-13 
2
OUT
3
IN
1
ADJ/GND
C409
100pF
50V
C408
0.1uF
16V
C405
0.1uF
16V
C411
0.1uF
16V
+3.3V_TU
+3.3V_TU
L421
BLM18PG121SN1D
IR
+3.5V_ST
C423
0.1uF
16V
KEY1
KEY2
C425
0.1uF
16V
OPT
C422
0.1uF
OPT
C421
0.1uF
OPT
C426
100pF
50V
+3.5V_ST
C424
1000pF
50V
LED
C407
10uF
6.3V
C404
22uF
6.3V
100pF
C406
50V
R423
4.7K
OPT
TUNER_SCL
TUNER_SDA
L401
BLM18PG121SN1D
R421
10K
R422
10K
R407
2.2K
R408
2.2K
R405
33
R406
33
C412
10uF
6.3V
P421
12507WR-08L
1
2
3
4
5
6
7
8
9
R411
1
R413
10
PAL
R414
10
PAL
R413-*1
0
NTSC
R414-*1
0
NTSC
TU401
TDSH-G501D(B) 
PAL
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
A1
A1
B1
B1
A2
A2
B2
B2
TU402
TDSS-H501F(B) 
NTSC
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
+B2[1.8]
6
NC_2
12
SHIELD
A1
A1
B1
X
ZD401
SD05
ZD402
SD05
C430
0.1uF
250V
READY
C431
0.1uF
250V
READY
R401
0
NTSC
TUNER & IR
4  8
LB35B/LC35B/LL35B
32LN5100
2012/11/15
EAX65027101
Near the pin
IR
IF
should be guarded by ground
Size change,0929
Close to the tuner
THERMAL
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.
MAIN SOC
RXA3+
RXA3-
RXACK+
RXACK-
RXA2+
RXA2-
RXA1+
RXA1-
RXA0+
RXA0-
RXB3+
RXB3-
RXBCK+
RXBCK-
RXB2+
RXB2-
RXB1+
RXB1-
RXB0+
RXB0-
R572
100
R507
68
C512
0.047uF
IF_AGC
R505
33
SPI_DO
+3.5V_ST
LED
C518
2.2uF
R577
4.7K
R578
22
IR
SPI_DI
HDMI1_D2+
HDMI1_SCL
EEP_SDA
+3.5V_ST
HDMI1_D0+
IC503
AT24C64D-SSHM-T
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
KEY2
VDDC
R504
33
R536
22
R542
100
HW_RESET
KEY1
HDMI1_SDA
C563
0.1uF
16V
C519
2.2uF
R546
100
IF_N
MNT_R_AMP
R571
100
COMMON_LIN
SPI_DI
HDMI1_D0-
+1.2V_VDDC
DSUB_SCL
IF_P
R569
4.7K
R575
100
+3.3V_M
USB_DN
I2S_MCLK
+1.8V_M
EEP_SCL
HW_RESET
SPI_CZ
HDMI1_D2-
USB_DP
SPI_CLK
COMMON_VIN
HDMI1_HPD
SPI_DO
SPI_CZ
C514
0.047uF
HDMI1_CK-
R512
1M
HDMI1_CK+
R541
100
R579
22
AVDD_DDR
COMP_PR
R537
22
DSUB_SDA
COMMON_RIN
HDMI1_D1+
VDDC_3.3
MNT_L_AMP
C550
0.047uF
HDMI1_D1-
MNT_VOUT
SPI_CLK
AUAMP_SDA
100
R543
100
R544
AUAMP_SCL
SW_RESET
EEP_SDA
EEP_SCL
RL_ON
PWM_DIM
RXA0+
RXA0-
RXA1+
RXA1-
RXA2+
RXA2-
RXACK+
RXACK-
RXA3+
RXA3-
+3.5V_ST
R538
4.7K
R539
4.7K
R517
10K
R510
220K
R511
220K
C522
220pF
C523
220pF
R508
100
R509
100
C508
0.047uF
R501
33
COMP_PB
C511
0.047uF
R503
68
C510
0.047uF
C509
1000pF
R502
33
R530
100
FLASH_WP
PANEL_ON
POWER_SW
R528
100
INV_ON
R535
1K
R534
1K
AVDD33_DEMOD
HDMI2_D1+
HDMI2_D0-
HDMI2_SDA
HDMI2_CK-
HDMI2_D2-
HDMI2_D2+
HDMI2_SCL
HDMI2_D1-
HDMI2_HPD
HDMI2_D0+
HDMI2_CK+
R533
0
AV2_VIN
C513
0.047uF
R506
33
C517
0.1uF
C516
10uF
AV2_RIN
C520
2.2uF
AV2_LIN
C521
2.2uF
HW_OPT1
C501
10uF
6.3V
VDDC
C547
0.1uF
VDDC
C544
0.1uF
VDDC
C506
0.1uF
C502
10uF
6.3V
C549
0.1uF
AVDD_DDR
C504
10uF
6.3V
VDDC_3.3
C548
0.1uF
AU_3.3V
3.3V_DMPLL
AU_3.3V
C515
0.1uF
C505
0.1uF
VDDC_3.3
C507
0.1uF
VDDC_3.3
C546
0.1uF
VDDC_3.3
VDDC_3.3
C545
0.1uF
C543
0.1uF
VDDC_3.3
AVDD33_DEMOD
3.3V_DMPLL
C532
0.1uF
C533
0.1uF
FLASH_WP
RXB3-
RXB3+
RXBCK-
RXBCK+
RXB2+
RXB2-
RXB0-
RXB0+
RXB1-
RXB1+
C573
22pF
READY
C574
22pF
READY
C503
4.7uF
C562
4.7uF
10V
0.1uF
C535
0.1uF
C534
R550
4.7K
FHD
R551
4.7K
HD
+3.3V_M
HW_OPT1
R545
100
L500
120-ohm
L503
120-ohm
L505
120-ohm
L504
120-ohm
L501
120-ohm
L502
120-ohm
L506
120-ohm
R519
4.7K
+3.5V_ST
R518
100
MUTE_AOUT
TUNER_SDA
100
R520
TUNER_SCL
100
R521
I2S_SCK
I2S_SDO
I2S_WS
C542
0.1uF
AVDD_DDR
TUNER_RESET
HDMI1_DET
HDMI2_DET
R547
10K
R548
10K
C572
0.1uF
16V
R574
100
R523
33
0
R524
+3.5V_ST
C551
220pF
OPT
50V
L521
100NH
OPT
R513
100
R514
100
C541
22000pF
50V
R531
10K
IC504
APX803D29
1
GND
3
VCC
2
RESET
+3.5V_ST
0.1uF
C560
R561
10K
POWER_DET
C561
4.7uF
10V
R562
470
POWER_DET
R549
100
R527
10K
R540
1K
IC501
LGE6841 (ATV_13)
1
DDCDD_CK
2
RX2N_D
3
RX2P_D
4
HOTPLUG_A
5
RXCKN_A
6
RXCKP_A
7
RX0N_A
8
RX0P_A
9
AVDD_MOD_1
10
RX1N_A
11
RX1P_A
12
DDCDA_DA
13
RX2N_A
14
RX2P_A
15
DDCDA_CK
16
ARC
17
VDD
18
AVDD3P3_ADC
19
HSYNC1
20
BIN1P
21
SOGIN1
22
GIN1P
23
GIN1M
24
RIN1P
25
VSYNC1
26
CVBS1
27
CVBS0
28
VCOM
29
CVBSOUT1
30
AVDD_AU33
31
AUREF
32
VAG
33
LINEIN_L1
34
LINEIN_R1
35
LINEIN_L3
36
LINEIN_R3
37
LINEOUTL3
38
LINEOUTR3
39
XTALO
40
XTALI
41
AVDD3P3_DMPLL
42
AVDD3P3_DADC
43
VIFP
44
VIFM
45
IFAGC
46
VSS
47
AVDD_DDR
48
GPIO55/I2S_OUT_WS
49
GPIO56
50
GPIO57/I2S_OUT_BCK
51
GPIO58/I2S_OUT_SD
52
GPIO60
53
GPIO61
54
VDDP
55
VDDC_1
56
LVA4P
57
LVA4M
58
LVA3P
59
LVA3M
60
LVACLKP
61
LVACLKM
62
AVDD_MOD_2
63
LVA2P
64
LVA2M
65
LVA1P
66
LVA1M
67
LVA0P
68
LVA0M
69
LVB4P
70
LVB4M
71
LVB3P
72
LVB3M
73
LVBCKP
74
LVBCKM
75
LVB2P
76
LVB2M
77
AVDD_MOD_3
78
LVB1P
79
LVB1M
80
LVB0P
81
LVB0M
82
VDDC_2
83
INT/GPIO65
84
GPIO7
85
GPIO6
86
GPIO5
87
GPIO4
88
GPIO3
89
GPIO2
90
GPIO1
91
GPIO0
92
PWM2/GPIO24
93
PWM3/GPIO25
94
SPI_CK
95
SPI_DI
96
SPI_DO
97
SPI_CZ
98
USB0_DM
99
USB0_DP
100
AVDD_MOD_4
101
GPIO63
102
GPIO64
103
TESTPIN
104
PWM0/GPIO26
105
PWM1/GPIO25
106
DDCA_CK
107
DDCA_DA
108
GPIO67
109
AVDD_DDR_2
110
SAR0/GPIO75
111
SAR1/GPIO74
112
SAR2/GPIO73
113
SAR3/GPIO72
114
GPIO68
115
GPIO69/I2S_OUT_MCK
116
GPIO70
117
IRIN
118
CEC
119
HWRESET
120
GND
121
HOTPLUG_D
122
RXCKN_D
123
RXCKP_D
124
RX0N_D
125
RX0P_D
126
DDCDD_DA
127
RX1N_D
128
RX1P_D
129
[EP]
C536
33pF
50V
C537
33pF
R564
10
R563
62K
IC502
W25Q64FVSSIG
3
WP[IO2]
2
DO[IO1]
4
GND
1
CS
5
DI[IO0]
6
CLK
7
%HOLD[IO3]
8
VCC
R573
100
R570
10K
C570
0.1uF
16V
C571
0.1uF
16V
READY
X501
24MHz
C530
15pF
C531
15pF
MAIN SOC
5  7
LB35B/LC35B/LL35B
32LN5100
2012/11/15
EAX65027101
SERIAL FLASH(2MB)
EEPROM(64K)
*H/W OPTION
Close to MSTAR
H/W RESET
MSTAR Vcc
ST 1.26V
DDR 1.8V
Close to MSTAR
ST 3.3V
HD
FHD
LOW
HIGH
HW_OPT
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