LG 32LS3500 (CHASSIS:LC21C) 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.
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.
2011/08/17
IR/CONTROL_W/O_IR_OUT
23
GP4L_S7LR2
JP2407
SENSOR_SCL
SENSOR_SDA
L2403
BLM18PG121SN1D
C2408
18pF
50V
18pF
50V
OPT
C2402
0.1uF
R2401
100
100
C2407
100pF
100pF
50V
KEY2
C2410
0.1uF
16V
OPT
JP2409
+3.5V_ST
+3.5V_ST
C2409
18pF
18pF
50V
OPT
LED_R/BUZZ
C2403
0.1uF
16V
R2402
100
100
JP2408
R2412
100
C2401
0.1uF
R2413
1.5K
R2411
100
100
L2402
BLM18PG121SN1D
JP2410
KEY1
C2404
1000pF
50V
L2401
BLM18PG121SN1D
IR
P2400
12507WR-10L
1
2
3
4
5
6
7
8
9
10
11
R2404
10K
1%
R2405
10K
1%
+3.5V_ST
D2401
5.6V
AMOTECH CO., LTD.
OPT
D2402
5.6V
AMOTECH CO., LTD.
OPT
D2404
5.48VTO5.76V
D2405
5.48VTO5.76V
D2403
5.48VTO5.76V
IR_OUT
LED_B/LG_LOGO
R2426
3.3K
IR/LED and control for on.y ’12 sub without IR-OUT.
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.
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.
2011/12/09
TUNER_EU
26
GP4L_S7LR2
FE_TS_DATA[1]
FE_TS_DATA[4]
FE_TS_DATA[3]
FE_TS_DATA[7]
FE_TS_DATA[6]
FE_TS_DATA[5]
FE_TS_DATA[2]
FE_TS_DATA[0]
C2630
0.1uF
16V
0.1uF
16V
R2607
0
OPT
C2625
0.1uF
16V
0.1uF
16V
DVB_S
C2648
0.1uF
0.1uF
16V
C2633
0.1uF
16V
0.1uF
16V
T2
FE_TS_VAL_ERR
LNB_OUT
TU_SDA
C2644
0.1uF
16V
16V
R2608
0
HALF_NIM/EU_NON_T2
C2628
10uF
10V
10uF
10V
OPT
L2603
BLM18PG121SN1D
T2
TU_SIF
DEMOD_SCL
L2602
BLM18PG121SN1D
DVB_S
C2603
0.1uF
16V
0.1uF
16V
RF_SW_OPT
AR3702-*1
33
1/16W
33
1/16W
DVB_S
+2.5V_TU
+3.3V_TU
+3.3V_TU
FE_TS_VAL
C2617
0.1uF
16V
0.1uF
16V
T2
R2616
4.7K
4.7K
C2605
33pF
50V
33pF
50V
OPT
C2646
22uF
10V
22uF
10V
R2601
0
HALF_NIM/EU_NON_T2
R2604
22
DVB_S
C2609
33pF
50V
33pF
50V
DVB_S
IC2600
AP2114H-2.5TRG1
OPT
GND
VOUT
VIN
+3.3V_TU
FE_TS_SYNC
AR3701-*1
33
1/16W
33
1/16W
DVB_S
C2640
0.1uF
16V
0.1uF
16V
OPT
+3.3V_TU
+3.3V_S2_DE
R2611
100
100
R2620
1
1/16W
5%
OPT
AR3702
47
FULL_NIM_NON_S
C2600
0.1uF
16V
16V
R2621
0
FE_TS_CLK
C2643
22uF
10V
22uF
10V
R2619
82
82
FE_TS_ERR
RF_SWITCH_CTL
C2629
0.1uF
16V
0.1uF
16V
OPT
LNB_TX
R2627
0
OPT
TU_CVBS
C2613
18pF
50V
18pF
50V
OPT
C2627
0.1uF
16V
0.1uF
16V
OPT
C2611
0.1uF
16V
0.1uF
16V
DVB_S
IF_AGC_MAIN
DEMOD_SDA
R2606
0
T2
R2622
1K
OPT
R2614
100K
L2600
BLM18PG121SN1D
DVB_S
R2610
33
R2871
1K
R2615
0
0
OPT
+3.3V_T2_TU
C2618
10uF
6.3V
10uF
6.3V
T2
+3.3V_TU
C2631
10uF
10V
10uF
10V
T2
AR3703
47
FULL_NIM_NON_S
+3.3V_TU
C2622
0.1uF
16V
IF_P_MSTAR
R2609
33
C2616
0.1uF
16V
0.1uF
16V
T2
AR3701
47
FULL_NIM_NON_S
C2614
100pF
50V
100pF
50V
T2
AR3703-*1
33
1/16W
33
1/16W
DVB_S
+1.23V_TU
C2624
100pF
50V
100pF
50V
DVB_S
C2623
0.1uF
16V
16V
C2608
100pF
50V
100pF
50V
DVB_S
FE_TS_ERR
R2624
220
C2601
0.1uF
16V
0.1uF
16V
OPT
R2870
1K
R2602
0
HALF_NIM/EU_NON_T2
C2604
0.1uF
16V
0.1uF
16V
S2_RESET
C2602
100pF
50V
100pF
50V
C2621
100pF
50V
100pF
50V
R2628
0
FE_TS_DATA[0-7]
IF_N_MSTAR
+2.5V_TU
+3.3V_Normal
C2634
0.1uF
16V
0.1uF
16V
DVB_S
L2601
BLM18PG121SN1D
T2
+1.23V_TU
+3.3V_TU
R2613
10
DVB_S
TU_SCL
C2626
0.1uF
16V
R2605
22
DVB_S
+3.3V_T2_TU
+3.3V_TU
R2631
0
OPT
R2612
2.2K
DVB_S
TUNER_RESET
R2600
51
DVB_S
+3.3V_TU
R2625
220
R2603
0
RF_SW_OPT
D2600
20V
3.0SMCJ20A(suzhougrande)
DVB_S
C2610
18pF
50V
18pF
50V
OPT
C2619
0.1uF
16V
0.1uF
16V
DVB_S
FE_TS_VAL
+1.23V_TU
C2615
10uF
10V
10uF
10V
DVB_S
C2620
0.1uF
16V
0.1uF
16V
T2
C2632
10uF
10V
10uF
10V
DVB_S
+3.3V_S2_DE
TU2601
TDSQ-G001D
TU_T/C/S2
1
NC_1
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
T/C_IF_AGC
10
T/C_DIF[P]
11
T/C_DIF[N]
12
NC_2
13
NC_3
14
NC_4
15
GND_1
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
GND_2
29
GND_3
30
+B3[1.23V]
31
S2_RESET
38
SHIELD
32
+B4[3.3V]
33
S2_F22_OUTPUT
34
S2_SCL
35
S2_SDA
36
LNB
37
GND_4
TU2602
TDSS-G101D
TU_T/C
5
+3.3V
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+1.8V
6
SIF
12
SHIELD
TU2603
TDSN-G301D
TU_T2/C
1
NC_1
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_2
10
NC_3
11
NC_4
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_5
15
GND
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
SHIELD
C2606
100uF
16V
16V
OPT
R2618
470
Q2601
MMBT3906(NXP)
E
B
C
Q2600
MMBT3906(NXP)
E
B
C
+3.3V_TU
C2635
0.1uF
16V
LNA2_CTL
+1.8V_TU
IF_AGC_SEL
C2645
0.1uF
16V
FULL_NIM
DEMOD_RESET
C2641
0.1uF
0.1uF
16V
R2632
1
R2629
3.3K
FULL_NIM
+1.23V_TU
C2647
10uF
10V
10uF
10V
FULL_NIM
IC2603
AP1117E18G-13
OUT
INADJ/GND
IC2602
TJ4220GDP-ADJ
FULL_NIM
3
VIN3
2
EN2
4
NC4
1
NC_1
5
NC_2
6
VOUT
7
ADJ/SENSE
8
GND
9
[EP]GND
C2642
10uF
10V
R2873
200
1%
OPT
R2633
12K
1%
FULL_NIM
R2634
22K
1%
22K
1%
FULL_NIM
L2606
CIS21J121
R2872
0
C2649
18pF
50V
18pF
50V
OPT
C2650
18pF
50V
18pF
50V
DVB_S
R2874
2.2K
1W
DVB_S
IC2601
74LVC1G08GW
OPT
3
2
4
1
5
TU2603-*1
TDSN-C201D
TDSN-C201D
TU_CHINA
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_4
15
GND
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D7
27
D8
28
SHIELD
C2607
20pF
50V
20pF
50V
C2612
20pF
50V
20pF
50V
C2651
20pF
50V
20pF
50V
C2652
20pF
50V
20pF
50V
+1.8V_TU
R2875-*1
MLB-201209-0120P-N2
DVB_S_FILTER
R2875
0
0
DVB_S_NON_FILTER
R2876
0
0
OPT
T2_DMOD_CAM
GP4R_GLOBAL_TUNER_BLOCK
close to TUNER
Pull-up can’t be applied
because of MODEL_OPT_2
because of MODEL_OPT_2
ERROR & VALID PIN
Surge protectioin
should be guarded by ground
GPIO must be added.
Close to TUNER
close to TUNER
close to TUNER
R1
Close to the tuner
VREF=1.25V
R2
Vo=0.8*(1+R2/R1)
R2
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet.
so this has to be deleted in both main and ISDB sheet.
Vo=VREF*(1+R2/R1)
R1
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.
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.
2011/11/02
DVB_S
27
GP4L_S7LR2
R2704
4.7K
LNB
A_GND
+3.3V_Normal
DCDC_GND
C2700
0.22uF
25V
LNB
A_GND
C2711
10uF
25V
10uF
25V
LNB
L2700
33UH
SP-7850_33
SP-7850_33
LNB
LNB_TX
+12V_LNB
C2702
0.1uF
0.1uF
LNB
C2709
27pF
OPT
R2701
33
LNB
LNB_OUT
C2707
68uF
35V
LNB
L2701
BLM18PG121SN1D
LNB
DEMOD_SCL
R2702
33
LNB
DCDC_GND
A_GND
A_GND
C2706
22000pF
LNB
+12V/+15V
C2703
0.1uF
50V
0.1uF
50V
LNB
A_GND
DCDC_GND
DCDC_GND
+12V_LNB
A_GND
DEMOD_SDA
IC2700
A8290SETTR-T
LNB
1
BOOST
3
TCAP
7
TDI
9
VREG
10
SDA
11
ADD
12
SCL
13
NC_2
14
IRQ
15
NC_3
16
NC_4
17
NC_5
18
NC_6
19
BFC
20
NC_7
21
NC_8
22
BFO
23
NC_9
24
BFI
25
VIN
26
LX
27
GNDLX
28
LNB
5
TDO
8
GND
6
EXTM
4
NC_1
2
VCP
29
[EP]
C2708
0.22uF
LNB
C2701
0.01uF
50V
LNB
C2710
27pF
OPT
A_GND
C2705
68uF
35V
LNB
A_GND
R2706
0
R2705
0
D2700
40V
SX34
LNB
D2702
40V
SX34
LNB
C2712
0.1uF
50V
0.1uF
50V
LNB
A_GND
ZD1
40V
40V
LNB
D2703
30V
MBR230LSFT1G
LNB
C2713
1uF
50V
1uF
50V
LNB
A_GND
DVB-S2 LNB Part Allegro
DCDC_GND and A_GND are connected
(Option:LNB)
2.4A
Input trace widths should be sized to conduct at least 3A
DCDC_GND and A_GND are connected in pin#27
close to Boost pin(#1)
2A
Ouput trace widths should be sized to conduct at least 2A
Max 1.3A
PCB_GND and A_GND are connected
3A
close to VIN pin(#25)
TH
ER
MA
L
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.
2011/11/16
AMP_STA380BWE
34
GP4L_S7LR2
SPK_R-
+3.3V_AMP
R3402
100
NON_LIPS
C3421
0.22uF
50V
0.22uF
50V
+3.3V_AMP
C3420
0.22uF
50V
0.22uF
50V
C3405
33pF
50V
33pF
50V
OPT
R3408
43
C3406
33pF
50V
33pF
50V
OPT
R3411
0
LIPS
AMP_SCL
C3409
0.1uF
16V
R3407
43
L3402
10.0uH
SPK_R+
+3.3V_Normal
AMP_RESET
L3403
10.0uH
C3401
1000pF
50V
1000pF
50V
C3404
2.2uF
2.2uF
10V
C3418
0.22uF
50V
0.22uF
50V
R3404
0
AMP_SDA
P3400
WAFER-ANGLE
1
2
3
4
SPK_L-
SPK_R+
C3408
0.1uF
16V
0.1uF
16V
SPK_L+
AUD_LRCH
R3401
10K
NON_LIPS
SPK_R-
L3401
BLM18PG121SN1D
C3402
0.1uF
50V
0.1uF
50V
R3403
0
L3405
10.0uH
R3400
10K
NON_LIPS
SPK_L+
C3423
0.22uF
50V
0.22uF
50V
+24V_AMP
AUD_MASTER_CLK
AUD_LRCK
SPK_L-
C3403
0.1uF
0.1uF
16V
C3407
0.1uF
16V
0.1uF
16V
AUD_SCK
C3417
10uF
35V
C3400
0.1uF
50V
0.1uF
50V
C3411
0.1uF
50V
R3410
43
C3422
0.22uF
50V
0.22uF
50V
+24V
C3416
0.1uF
50V
+3.3V_AMP
C3419
0.22uF
50V
0.22uF
50V
L3404
10.0uH
+3.5V_ST
Q3400
MMBT3904(NXP)
MMBT3904(NXP)
NON_LIPS
E
B
C
R3409
43
AMP_MUTE
+24V_AMP
C3413
330pF
50V
330pF
50V
C3414
330pF
50V
330pF
50V
C3426
1000pF
50V
1000pF
50V
C3427
1000pF
50V
1000pF
50V
C3425
1000pF
50V
1000pF
50V
C3424
1000pF
50V
1000pF
50V
C3415
1uF
50V
C3412
1uF
50V
L3400
CIS21J121
IC3400
STA380BW
1
VCC_REG
2
VSS_REG
3
OUT2B
4
GND2
5
VCC2
6
OUT2A
7
OUT1B
8
VCC1
9
GND1
10
OUT1A
11
VDD_REG
12
GND_REG
13
NC_1
14
NC_2
15
NC_3
16
NC_4
17
NC_5
18
NC_6
19
NC_7
20
NC_8
21
NC_9
22
NC_10
23
NC_11
24
NC_12
25
NC_13
26
NC_14
27
NC_15
28
VDDDIG1
29
GNDDIG1
30
FFX3A
31
FFX3B
32
EAPD/FFX4A
33
TWARNEXT/FFX4B
34
VREGFILT
35
AGNDPLL
36
MCLK
37
BICKI
38
LRCKI
39
SDI
40
RESET
41
PWDN
42
INTLINE
43
SDA
44
SCL
45
SA
46
TESTMODE
47
GNDDIG2
48
VDDDIG2
49
[EP]
POWER_DET
R3412
10K
10K
NON_LIPS
SPEAKER_L
AUDIO AMP(STA380BWE)
SPEAKER_R
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