DOWNLOAD LG 32LN5650 (CHASSIS:LB31J) Service Manual ↓ Size: 6.76 MB | Pages: 69 in PDF or view online for FREE

Model
32LN5650 (CHASSIS:LB31J)
Pages
69
Size
6.76 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln5650-chassis-lb31j.pdf
Date
PREV: LG 32LN5400 / 32LN540B (CHASSIS:LJ36B) Service Manual

LG 32LN5650 (CHASSIS:LB31J) Service Manual ▷ View 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.
+1.8V_TU
R3760
0
HALF_NIM/IF_NON_FILTER
C3743
20pF
50V
OPT
R3741-*1
1K
TU_IIC_NON_ATSC_1K
TU_GND_A
R3704
100
R3740-*1
1K
TU_IIC_NON_ATSC_1K
R3735
33
+3.3V_TU
LNA2_CTL
C3742
20pF
50V
OPT
TUNER_RESET
IF_P_MSTAR
R3758
82
OPT
R3736
33
TU_GND_A
DEMOD_SCL
IF_AGC_MAIN
TU3700
TDSS-G201D
TUNER_OPT
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[1.8V]
6
NC_2
12
SHIELD
A1
A1
B1
B1
TU_SDA
+3.3V_TU
R3733
100K
C3707
100pF
50V
FE_TS_VAL_ERR
C3716
0.1uF
16V
+1.8V_TU
C3708
0.1uF
16V
LNA_CTRL_2
C3738
0.1uF
16V
+3.3V_TU
R3732
100
IC3703
AP1117E18G-13 
2
OUT
3
IN
1
ADJ/GND
R3705
0
OPT
R3784
0
OPT
FE_TS_DATA[0]
TU_SCL
C3737
100pF
50V
+3.3V_TU
C3740
0.1uF
16V
TU_CVBS
TU_SIF
R3761
0
HALF_NIM/IF_NON_FILTER
BR_RESET_DEMOD
R3740
1.8K
TU_IIC_ATSC_1.8K
TU_GND_A
FE_TS_CLK
RF_SWITCH_CTL
C3702
0.1uF
16V
OPT
FE_TS_SYNC
IF_AGC_SEL
C3710
0.1uF
16V
LNA_CTRL_1
C3713
18pF
50V
C3701
0.1uF
16V
DEMOD_SDA
C3717
0.1uF
16V
C3711
18pF
50V
R3741
1.8K
TU_IIC_ATSC_1.8K
IF_N_MSTAR
R3766
1
C3741-*1
10uF 10V
CAP_X7R_MP
C3741
10uF
10V
CAP_10uF_X5R
85C
R3761-*1
10
HALF_NIM/IF_FILTER
R3760-*1
10
HALF_NIM/IF_FILTER
R3714
0
NON_ASIA
R3715
0
NON_ASIA
TU3702
TDSH-G501D(B) 
TUNER_ISOLATOR_DVB_1INPUT_H
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
TU3700-*1
TDSS-H501F(B) 
TUNER_ATSC
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
2012.06.21
should be guarded by ground
TUNER MULTI-OPTION
NC4_S7LRM
GLOBAL tuner block except EU and China
Pull-up can’t be applied 
because of MODEL_OPT_2
close to TUNER
close to TUNER
FE_BOOSTER_CTL
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
   Signal to Signal Width = 12mils
   Ground Width >= 24mils
close to the tuner pin, add,09029
Close to the tuner
TUNER_NON_EU
14
FE_AGC_SPEED_CTL
GND seperation for ASIS tuner
CHANGE TO
10UF 10V X5R
HPF
LPF
Frequence
1
0
0
54MHz~350MHz
TW_FE_LNA FILTER_SETTING
CTRL_1
CTRL_2
0
350Hz~450MHz
450Hz~870MHz
Filter_Type
1
0
Through
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.
COMP2_Pr+
AV2_CVBS_DET
R1714
10K
R1721
12K
R1715
10K
R1719
12K
AV2
R1713
1K
R1707
75
R1704
470K
R1700
470K
AV2
D1706
5.6V
OPT
R1712
1K
COMP2_Pb+
+3.3V_Normal
COMP2_DET
R1701
470K
AV2
R1705
75
R1709
10K
COMP2_R_IN
R1703
470K
D1709
5.6V
OPT
AV2_R_IN
D1702
5.6V
OPT
D1701
5.6V
AV2_LR_ZENER
C1701
1000pF
50V
OPT
R1716
10K
AV2
R1710
10K
C1704
1000pF
50V
OPT
R1706
75
COMP2_L_IN
R1711
1K
AV2
+3.3V_Normal
+3.3V_Normal
D1704
5.6V
COMP_LR_ZENER
R1702
75
AV2
D1700
5.6V
AV2_LR_ZENER
R1718
12K
AV2
R1708
10K
AV2
AV2_CVBS_IN
C1703
47pF
50V
AV2
COMP2_Y+/AV_CVBS_IN
C1702
1000pF
50V
OPT
R1720
12K
AV2_L_IN
R1717
10K
AV2
D1705
5.6V
COMP_LR_ZENER
AV_CVBS_DET
C1705
1000pF
50V
OPT
R1722
0
DTV/MNT_VOUT
R1723
75
CVBS_TEST
+3.3V_Normal
C1706
0.1uF
CVBS_TEST
C1707
0.1uF
CVBS_TEST
4.7uF
C1708
CVBS_TEST
JK1701
PPJ248-01 
COMP_AV1/2
6D
[GN]C-SPRING
7D
[GN]E-LUG
4D
[GN]CONTACT
5E
[BL]C-SPRING
8F
[RD1]E-LUG-S
6F
[RD1]C-SPRING
4F
[RD1]CONTACT
5G
[WH1]C-SPRING
4H
[RD2]CONTACT
6H
[RD2]C-SPRING
7H
[RD2]E-LUG
7A
[YL]E-LUG
6A
[YL]C-SPRING
4A
[YL]CONTACT
5B
[WH2]C-SPRING
4C
[RD3]CONTACT
6C
[RD3]C-SPRING
7C
[RD3]E-LUG
D1711
COMP_Y_ZENER_ROHM
D1703
COMP_Pr_ZENER_ROHM
D1712
COMP_Y_ZENER_ROHM
D1714
AV2_CVBS_ZENER_ROHM
D1713
AV2_CVBS_ZENER_ROHM
D1710
COMP_Pb_ZENER_ROHM
D1708
COMP_Pb_ZENER_ROHM
D1707
COMP_Pr_ZENER_ROHM
D1714-*1
AV2_CVBS_ZENER_KEC
D1713-*1
AV2_CVBS_ZENER_KEC
D1710-*1
COMP_Pb_ZENER_KEC
D1708-*1
COMP_Pb_ZENER_KEC
D1707-*1
COMP_Pr_ZENER_KEC
D1703-*1
COMP_Pr_ZENER_KEC
D1712-*1
COMP_Y_ZENER_KEC
D1711-*1
COMP_Y_ZENER_KEC
JK1702
PPJ245-01 
COMP_AV1
6A
[GN]C-SPRING
7A
[GN]E-LUG
4A
[GN]CONTACT
5B
[BL]C-SPRING
8C
[RD1]E-LUG-S
6C
[RD1]C-SPRING
4C
[RD1]CONTACT
5D
[WH]C-SPRING
4E
[RD2]CONTACT
6E
[RD2]C-SPRING
7E
[RD2]E-LUG
IC1700
MM1756DURE
CVBS_TEST
3
BIAS
2
GND
4
OUT
1
IN
6
VCC
5
PS
2012.08.14
NC4_S7LRM
REAR_NON_EU_L
COMPONENT
&
AV1
17
AV2
COMPONENT1 & AV(COMMON), AV2
THERMAL
THERMAL
THERMAL
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.
2012/08/29
AMP_STA380BWEF
34
NC4_S7LRM
SPK_L+
SPK_R-
P3401
WAFER-ANGLE
1
2
3
4
SPK_L-
SPK_R+
WOOFER_L+
P3402
WAFER-ANGLE
1
2
3
4
WOOFER_R+
WOOFER_R-
WOOFER_L-
C3435
10uF
35V
+24V_AMP_4
+24V_AMP_1
0.1uF
C3429
50V
Q3401
MMBT3904(NXP)
E
B
C
0.1uF
C3455
50V
POWER_DET
C3437
0.01uF
50V
OPT
R3411
100
OPT
C3433
10uF
35V
C3421
22000pF
50V
C3453
0.47uF
50V
C3403
33pF
50V
WOOFER_R-
C3440
22000pF
50V
0.1uF
C3401
50V
R3403
10K
0.1uF
C3415
16V
L3405
SP-7850_10
10uH
URSA_SDA
R3425
5.1K
C3419
1000pF
50V
AUD_LRCH
+3.5V_ST
R3417
12
1uF
C3412
10V
R3414
3.3
OPT
0.1uF
C3402
50V
R3405
100
L3414
CIS21J121
+24V_AMP_4
AMP_RESET
AUD_SCK
R3407
100
0.1uF
C3425
50V
0.1uF
C3427
50V
C3447
1uF
10V
C3417
10uF
10V
C3407
33pF
50V
URSA_SCL
L3404
SP-7850_10
10uH
AUD_MASTER_CLK
+3.3V_Normal
C3449
390pF
50V
C3445
1uF
10V
R3421
12
C3439
22000pF
50V
C3422
22000pF
50V
0.1uF
C3431
50V
WOOFER_R+
AMP_MUTE
AUD_LRCK
R3416
12
C3443
1uF
10V
R3408
100
C3450
390pF
50V
IC3404
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
C3405
1000pF
50V
L3402
BLM18PG121SN1D
R3401
10K
0.1uF
C3456
50V
R3420
12
C3409
0.1uF
16V
OPT
R3424
5.1K
C3411
0.1uF
16V
+24V
R3413
10K
C3438
0.01uF
50V
OPT
Q3402
MMBT3904(NXP)
E
B
C
R3406
100
+3.5V_ST
R3419
12
0.1uF
C3430
50V
R3415
3.3
OPT
AUD_LRCH
AMP_MUTE
0.1uF
C3432
50V
C3454
0.47uF
50V
C3434
10uF
35V
IC3403
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
R3409
100
C3451
390pF
50V
AMP_RESET
C3410
0.1uF
16V
OPT
C3408
33pF
50V
C3418
10uF
10V
0.1uF
C3426
50V
URSA_SCL
C3423
22000pF
50V
C3442
22000pF
50V
C3436
10uF
35V
C3441
22000pF
50V
R3423
12
C3404
33pF
50V
L3403
BLM18PG121SN1D
C3446
1uF
10V
+3.3V_Normal
C3424
22000pF
50V
WOOFER_L+
R3426
5.1K
R3422
12
POWER_DET
R3410
100
+24V_AMP_3
C3448
1uF
10V
0.1uF
C3416
16V
1uF
C3414
10V
R3412
100
OPT
C3444
1uF
10V
0.1uF
C3457
50V
R3418
12
L3406
SP-7850_10
10uH
WOOFER_L-
R3404
10K
0.1uF
C3428
50V
+24V_AMP_3
URSA_SDA
C3420
1000pF
50V
AUD_SCK
C3452
390pF
50V
C3406
1000pF
50V
R3402
10K
0.1uF
C3458
50V
AUD_MASTER_CLK
C3413
0.1uF
16V
R3427
5.1K
AUD_LRCK
L3407
SP-7850_10
10uH
AMP_RESET
0.1uF
C3488
50V
+24V_AMP_1
R3452
12
+24V_AMP_2
C3506
390pF
50V
0.1uF
C3486
50V
R3444
10K
R3438
100
OPT
0.1uF
C3485
50V
C3491
10uF
35V
R3450
12
R3442
100
C3465
0.1uF
16V
OPT
+3.3V_Normal
AUD_LRCK
L3411
SP-7850_10
10uH
C3494
0.01uF
50V
OPT
R3441
100
1uF
C3468
10V
C3499
1uF
10V
C3469
0.1uF
16V
C3459
33pF
50V
C3467
0.1uF
16V
0.1uF
C3481
50V
R3445
3.3
OPT
IC3401
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
+24V_AMP_2
R3448
12
C3489
10uF
35V
AUD_SCK
SPK_R-
C3480
22000pF
50V
AMP_SCL
R3439
100
OPT
SPK_L-
R3435
100
+3.3V_Normal
R3456
5.1K
Q3404
MMBT3904(NXP)
E
B
C
C3463
33pF
50V
R3446
3.3
OPT
AUD_LRCH
C3509
0.47uF
50V
R3455
5.1K
C3476
1000pF
50V
AMP_RESET
L3409
BLM18PG121SN1D
0.1uF
C3483
50V
AUD_LRCH
R3454
12
0.1uF
C3484
50V
L3412
SP-7850_10
10uH
0.1uF
C3482
50V
POWER_DET
0.1uF
C3513
50V
SPK_L+
Q3403
MMBT3904(NXP)
E
B
C
C3477
22000pF
50V
AMP_SCL
AMP_MUTE
R3453
12
C3473
10uF
10V
0.1uF
C3512
50V
C3503
1uF
10V
C3500
1uF
10V
0.1uF
C3514
50V
C3475
1000pF
50V
C3505
390pF
50V
+24V_AMP_1
R3449
12
R3428
10K
C3460
33pF
50V
0.1uF
C3511
50V
L3413
SP-7850_10
10uH
R3451
12
R3429
10K
R3457
5.1K
AMP_SDA
C3493
0.01uF
50V
OPT
R3440
100
C3474
10uF
10V
C3490
10uF
35V
C3462
1000pF
50V
C3510
0.47uF
50V
C3464
33pF
50V
AUD_MASTER_CLK
C3497
22000pF
50V
C3504
1uF
10V
R3447
12
0.1uF
C3487
50V
L3408
BLM18PG121SN1D
C3496
22000pF
50V
C3501
1uF
10V
R3458
5.1K
R3431
10K
C3502
1uF
10V
0.1uF
C3471
16V
C3461
1000pF
50V
C3508
390pF
50V
AUD_MASTER_CLK
L3410
SP-7850_10
10uH
R3436
100
C3492
10uF
35V
SPK_R+
C3478
22000pF
50V
R3430
10K
R3443
100
C3498
22000pF
50V
AMP_MUTE
C3466
0.1uF
16V
OPT
AUD_SCK
+3.5V_ST
C3495
22000pF
50V
C3507
390pF
50V
IC3402
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
C3479
22000pF
50V
AUD_LRCK
AMP_SDA
1uF
C3470
10V
0.1uF
C3472
16V
+3.5V_ST
POWER_DET
L3415
CIS21J121
0.1uF
C3515
50V
+24V
+24V_AMP_2
0.1uF
C3516
50V
L3416
CIS21J121
0.1uF
C3517
50V
+24V
+24V_AMP_3
0.1uF
C3518
50V
0.1uF
C3519
50V
0.1uF
C3520
50V
L3417
CIS21J121
+24V
+24V_AMP_4
AUDIO 4 AMP(NTP7513)
WOOFER_R
0x56
0x54
WOOFER_L
SPEAKER_L
0x56
0x54
SPEAKER_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.
2012/06/20
MSTAR DEBUG_4PIN
39
NC4_S7LRM
RGB_DDC_SCL
RGB_DDC_SDA
P3900
12505WS-04A00
MSTAR_DEBUG_4P
1
2
3
4
5
JP_GND2
JP_GND3
JP_GND4
JP_GND1
MSTART DEBUG_4PIN
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