DOWNLOAD LG 32LN549E / 32LP620H (CHASSIS:LB3AZ) Service Manual ↓ Size: 5.3 MB | Pages: 40 in PDF or view online for FREE

Model
32LN549E 32LP620H (CHASSIS:LB3AZ)
Pages
40
Size
5.3 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln549e-32lp620h-chassis-lb3az.pdf
Date

LG 32LN549E / 32LP620H (CHASSIS:LB3AZ) 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.
NEC_DBG_TX
+3.5V_ST
DBG_RX
100
R1721
0 . 1 u F
C1711
3.6K
R1709
UART_DBG_SW
+3.5V_ST
0 . 1 u F
C1705
MST_DBG_TX
3.6K
R1710
MST_DBG_RX
DBG_SW
DBG_RX
NEC_DBG_RX
DBG_TX
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1702
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
DBG_TX
+3.5V_ST
EXT_VOL-
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1705
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1701
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
EXT_VOL+
+3.5V_ST
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1706
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
+3.5V_ST
4.7K
R1724
0 . 1 u F
C1712
UART_RX
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1703
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
I2C_SDA
MST_DBG_TX
I2C_SCL
UART_SW1
NEC_RX
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1710
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
+3.5V_ST
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1709
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
MST_NEC_TX
UART_SW2
1uF
50V
C1714
NEC_EEPROM_SCL
22
R1731
100
R1728
100
R1720
NEC_EEPROM_SDA
EEPROM_SW
+3.5V_ST
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1704
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
UART_RX
UART_TX
+3.5V_ST
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1708
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
NEC_TX
MST_TX
MST_RX
MST_DBG_RX
UART_TX
0 . 1 u F
C1710
EEPROM_SDA
ON SEMICONDUCTOR
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
IC1707
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
MST_NEC_RX
0 . 1 u F
C1713
EEPROM_SCL
P E J 0 2 7 - 0 4
JK1701
6B T_TERMINAL2
7B B_TERMINAL2
5 T_SPRING
4 R_SPRING
7A B_TERMINAL1
6A T_TERMINAL1
3 E_SPRING
0 . 4 7 u F
50V
EXT_SPK
C1744
10K
EXT_SPK
R1783
10uF
25V
OPT
C1739
100uF
25V
EXT_SPK
C1748
1uF
50V
EXT_SPK
C1743
10K
EXT_SPK
R1784
4.7K
EXT_SPK
R1779
AMP_RESET
4.7K
EXT_SPK
R1780
10K
OPT
R1782
0 . 1 u F
16V
EXT_SPK
C1737
1uF
50V
EXT_SPK
C1735
22.0uH
EXT_SPK
L1712
1uF
50V
EXT_SPK
C1745
10uF
25V
EXT_SPK
C1736
BLM18PG121SN1D
EXT_SPK
L1711
EXT_AMP_L
0 . 4 7 u F
50V
EXT_SPK
C1746
100
EXT_SPK
R1776
EXT_SPK_R
0 . 1 u F
16V
EXT_SPK
C1738
TPA3124D2PWPR
IC1700
EXT_SPK
3
PVCCL_2
2
SD
4
MUTE
1
PVCCL_1
6
RIN
5
LIN
7
BYPASS
8
AGND_1
9
AGND_2
10
PVCCR_1
11
VCLAMP
12
PVCCR_2
13
PGNDR_1
14
PGNDR_2
15
ROUT
16
BSR
17
GAIN1
18
GAIN0
19
AVCC_1
20
AVCC_2
21
BSL
22
LOUT
23
PGNDL_1
24
PGNDL_2
100uF
25V
EXT_SPK
C1747
1uF
50V
EXT_SPK
C1734
EXT_SPK
L1710
0 . 1 u F
16V
EXT_SPK
C1741
+3.5V_ST
1uF
10V
EXT_SPK
C1733
10K
EXT_SPK
R1777
10uF
25V
EXT_SPK
C1740
22.0uH
EXT_SPK
L1713
+12V/+15V
1uF
10V
EXT_SPK
C1732
10K
OPT
R1781
0 . 2 2 u F
50V
EXT_SPK
C1749
MMBT3904(NXP)
EXT_SPK
Q1700
E
B
C
EXT_SPK_L
SUB_AMP_MUTE
0 . 2 2 u F
50V
EXT_SPK
C1742
EXT_AMP_R
10K
EXT_SPK
R1778
100K
R1771
EXT_SPK
1uF
OPT
C1731
100
R1772
EXT_SPK
+3.3V_Normal
EXT_SPK_L
EXT_SPK_R
1uF
OPT
C1730
P E J 0 3 4 - 0 1  
JK1700
EXT_SPK
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
3
E_SPRING
EXT_SPK_DET
10K
R1790
EXT_SPK
10K
R1791
EXT_SPK
CONNECTION
UART/I2C SWITCH
L
H
EXT_SPK_CONTROL/DEBUG
EXT_SPK AMP
EXT_SPK OUT
A   -   B 0
H
CONNECTION
L
UART_SW1
A   -   B 1
L
H
CONNECTION
MSTAR DEBUG
MSTAR ADJ
UART_SW2
A   -   B 0
A   -   B 1
INTERACTIVE
NEC USB_DOWNLOAD
UART_SW
A   -   B 0
A   -   B 1
NEC DEBUG
MSTAR DEBUG
A   -   B 0
A   -   B 1
DEBUG_NEC/MSTAR
H
DBG_SW
L
EXT_SPK CONTROL
CONNECTION
A   -   B 0
A   -   B 1
NEC-EEPROM
H
EEPROM_SW
L
MSTAR-EEPROM
CONNECTION
 EMEA INTERACTIVE
LP63xH-ZA
2 0 1 2 . 1 1 . 0 5
EXT SPK
1 7          
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.
EPHY_RN
EPHY_TN
EPHY_TP
XRJV-01V-0-D12-080
JK2100
ETHERNET_XMULTIPLE
1
2
3
4
5
6
7
8
9
9
+2.5V_Normal
EPHY_RP
0 . 0 1 u F
50V
C2104
ETHERNET
BLM18PG121SN1D
L2101
ETHERNET
4 9 . 9
ETHERNET
R2101
4 9 . 9
ETHERNET
R2102
0 . 1 u F
ETHERNET
C2101
4 9 . 9
ETHERNET
R2104
0 . 1 u F
ETHERNET
C2102
4 9 . 9
ETHERNET
R2103
RJ45VT-01SN002
JK2100-*1
ETHERNET_XML_EMI
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
ETHERNET
* H/W option : ETHERNET
2 0 1 2 / 1 1 / 0 5
LAN
21
LP63xH-ZA
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.
0 . 1 u F
16V
C2630
0
R2607
OPT
0 . 1 u F
16V
C2625
DVB_S
0 . 1 u F
16V
C2648
0 . 1 u F
16V
C2633
T2
FE_TS_VAL_ERR
LNB_OUT
TU_SDA
0 . 1 u F
16V
C2644
0
R2608
HALF_NIM/EU_NON_T2
10uF
10V
C2628
OPT
BLM18PG121SN1D
L2603
T2
TU_SIF
DEMOD_SCL
BLM18PG121SN1D
L2602
DVB_S
0 . 1 u F
16V
C2603
RF_SW_OPT
1/16W
33
AR3702-*1
DVB_S
+2.5V_TU
+3.3V_TU
+3.3V_TU
FE_TS_VAL
0 . 1 u F
16V
C2617
T2
4.7K
R2616
NON_ASIA_TU
33pF
50V
C2605
OPT
22uF
10V
C2646
0
R2601
HALF_NIM/EU_NON_T2
22
R2604
DVB_S
33pF
50V
C2609
DVB_S
AP2114H-2.5TRG1
IC2600
OPT
GND
VOUT
VIN
+3.3V_TU
FE_TS_SYNC
1/16W
33
AR3701-*1
DVB_S
0 . 1 u F
16V
C2640
OPT
+3.3V_TU
+3.3V_S2_DE
100
R2611
1/16W
1
5%
R2620
OPT
47
FULL_NIM_NON_S
AR3702
0 . 1 u F
16V
C2600
0
R2621
NON_ASIA_TU
FE_TS_CLK
22uF
10V
C2643
82
R2619
NON_ASIA_TU
FE_TS_ERR
RF_SWITCH_CTL
0 . 1 u F
16V
C2629
OPT
LNB_TX
0
R2627
OPT
TU_CVBS
18pF
50V
C2613
OPT
0 . 1 u F
16V
C2627
OPT
0 . 1 u F
16V
C2611
DVB_S
IF_AGC_MAIN
DEMOD_SDA
0
R2606
T2
1K
OPT
R2622
100K
R2614
BLM18PG121SN1D
L2600
DVB_S
33
R2610
TU_I2C_NON_FILTER
1K
R2871
0
R2615
OPT
+3.3V_T2_TU
10uF
6.3V
C2618
T2
+3.3V_TU
10uF
10V
C2631
T2
47
FULL_NIM_NON_S
AR3703
+3.3V_TU
0 . 1 u F
16V
C2622
IF_P_MSTAR
33
R2609
TU_I2C_NON_FILTER
0 . 1 u F
16V
C2616
T2
47
AR3701
FULL_NIM_NON_S
100pF
50V
C2614
T2
1/16W
33
AR3703-*1
DVB_S
+1.23V_TU
100pF
50V
C2624
DVB_S
0 . 1 u F
16V
C2623
100pF
50V
C2608
DVB_S
FE_TS_ERR
220
R2624
NON_ASIA_TU
0 . 1 u F
16V
C2601
OPT
1K
R2870
0
R2602
HALF_NIM/EU_NON_T2
0 . 1 u F
16V
C2604
S2_RESET
100pF
50V
C2602
100pF
50V
C2621
0
R2628
OPT
FE_TS_DATA[0-7]
IF_N_MSTAR
+2.5V_TU
+3.3V_Normal
0 . 1 u F
16V
C2634
DVB_S
BLM18PG121SN1D
L2601
T2
+1.23V_TU
+3.3V_TU
10
R2613
DVB_S
TU_SCL
22
R2605
DVB_S
+3.3V_T2_TU
+3.3V_TU
0
R2631
OPT
2.2K
R2612
DVB_S
TUNER_RESET
51
R2600
DVB_S
+3.3V_TU
220
R2625
NON_ASIA_TU
0
RF_SW_OPT
R2603
3 . 0 S M C J 2 0 A ( s u z h o u g r a n d e )
20V
D2600
DVB_S
18pF
50V
C2610
OPT
0 . 1 u F
16V
C2619
DVB_S
FE_TS_VAL
+1.23V_TU
10uF
10V
C2615
DVB_S
0 . 1 u F
16V
C2620
T2
10uF
10V
C2632
DVB_S
+3.3V_S2_DE
100uF
16V
C2606
OPT
470
R2618
NON_ASIA_TU
MMBT3906(NXP) 
Q2601
NON_ASIA_TU
E
B
C
MMBT3906(NXP) 
Q2600
NON_ASIA_TU
E
B
C
+3.3V_TU
0 . 1 u F
16V
C2635
LNA2_CTL
+1.8V_TU
0 . 1 u F
16V
C2645
FULL_NIM
DEMOD_RESET
0 . 1 u F
16V
C2641
1
R2632
3.3K
FULL_NIM
R2629
+1.23V_TU
10uF
10V
C2647
FULL_NIM
AP1117E18G-13 
IC2603
OUT
IN
ADJ/GND
THERMAL
TJ4220GDP-ADJ 
IC2602
FULL_NIM
3
VIN3
2
EN2
4
NC4
1
NC_1
5
NC_2
6
VOUT
7
ADJ/SENSE
8
GND
9
[EP]GND
10uF
10V
C2642
200
1%
R2873
OPT
12K
1%
FULL_NIM
R2633
22K
1%
FULL_NIM
R2634
0
R2872
18pF
50V
C2649
OPT
18pF
50V
C2650
DVB_S
1W
2.2K
R2874
DVB_S
74LVC1G08GW 
IC2601
OPT
3
2
4
1
5
TDSN-C201D
TU2603-*1
TU_CHINA
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
+ B 1 [ 3 . 3 V ]
6
S I F
7
+ B 2 [ 1 . 8 V ]
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+ B 3 [ 3 . 3 V ]
13
+ B 4 [ 1 . 2 3 V ]
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
20pF
50V
C2607
20pF
50V
C2612
20pF
50V
C2651
20pF
50V
C2652
+1.8V_TU
MLB-201209-0120P-N2
R2875-*1
DVB_S_FILTER
0
R2875
DVB_S_NON_FILTER
MLG1005SR27JT
R2609-*1
TU_I2C_FILTER
MLG1005SR27JT
R2610-*1
TU_I2C_FILTER
TDSN-G301D
TU2603
TU_T2/C
1
NC_1
2
RESET
3
SCL
4
SDA
5
+ B 1 [ 3 . 3 V ]
6
S I F
7
+ B 2 [ 1 . 8 V ]
8
CVBS
9
NC_2
10
NC_3
11
NC_4
12
+ B 3 [ 3 . 3 V ]
13
+ B 4 [ 1 . 2 3 V ]
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
A1
A1
B1
B1
TDSQ-G001D 
TU2601
TU_T/C/S2
1
NC_1
2
RESET
3
SCL
4
SDA
5
+ B 1 [ 3 . 3 V ]
6
S I F
7
+ B 2 [ 1 . 8 V ]
8
CVBS
9
T/C_IF_AGC
10
T / C _ D I F [ 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
+ B 3 [ 1 . 2 3 V ]
31
S2_RESET
38
SHIELD
32
+ B 4 [ 3 . 3 V ]
33
S2_F22_OUTPUT
34
S2_SCL
35
S2_SDA
36
LNB
37
GND_4
A1
A1
B1
B1
10pF
50V
OPT
C2660
10pF
50V
OPT
C2661
0
ASIA_TU
R2661
2K
ASIA_TU
R2662
0
ASIA_TU
R2664
0 . 1 u F
16V
C2626
NON_ASIA_TU
0
ASIA_TU
C2626-*1
TDSS-G201D
TU2602
SI2156_DVB_1INPUT_H
5
+ B 1 [ 3 . 3 V ]
11
DIF[N]
2
RESET
10
D I F [ P ]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
+ B 2 [ 1 . 8 V ]
6
NC_2
12
SHIELD
A1
A1
B1
B1
TDSS-G101D
TU2602-*1
TU_T/C
5
+3.3V
11
DIF[N]
2
RESET
10
D I F [ P ]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+1.8V
6
S I F
12
SHIELD
510
ASIA_TU
R2660
510
ASIA_TU
R2663
UBW2012-121F
L2606
TDSS-G201D(B) 
TU2602-*2
TDSS-G201D(B)
5
+3.3V
11
DLIF[N]
2
RESET
10
DLIF[P]
4
SDA
1
NC
9
IF_AGC
8
ALIF[P]
3
SCL
7
+1.8V
6
ALIF[N]
12
SHIELD
A1
A1
B1
B1
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]
P4R_GLOBAL_TUNER_BLOCK
close to TUNER
P u l l - u p   c a n ’ t   b e   a p p l i e d  
because of MODEL_OPT_2
ERROR & VALID PIN 
S u r g e   p r o t e c t i o i n
s h o u l d   b e   g u a r d e d   b y   g r o u n d
G P I O   m u s t   b e   a d d e d .
Close to TUNER
c l o s e   t o   T U N E R
close to TUNER
R1
C l o s e   t o   t h e   t u n e r
VREF=1.25V
R2
Vo=0.8*(1+R2/R1)
R2
T h i s   w a s   b e i n g   a p p l i e d   t o   t h e   o n l y   c h i n a   d e m o d ,
s o   t h i s   h a s   t o   b e   d e l e t e d   i n   b o t h   m a i n   a n d   I S D B   s h e e t .  
Vo=VREF*(1+R2/R1)
R1
2 0 1 2 / 1 1 / 0 5
TUNER_EU
26
LP63xH-ZA
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.
4.7K
LNB
R2704
A_GND
+3.3V_Normal
DCDC_GND
0 . 2 2 u F
25V
LNB
C2700
A_GND
10uF
25V
LNB
C2711
SP-7850_33
33UH
LNB
L2700
LNB_TX
+12V_LNB
0 . 1 u F
LNB
C2702
27pF
OPT
C2709
33
LNB
R2701
LNB_OUT
68uF
35V
LNB
C2707
BLM18PG121SN1D
LNB
L2701
DEMOD_SCL
33
LNB
R2702
DCDC_GND
A_GND
A_GND
22000pF
LNB
C2706
+12V/+15V
0 . 1 u F
50V
LNB
C2703
A_GND
DCDC_GND
DCDC_GND
+12V_LNB
A_GND
DEMOD_SDA
THERMAL
A8290SETTR-T
LNB
IC2700
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]
0.22uF
LNB
C2708
0 . 0 1 u F
50V
LNB
C2701
27pF
OPT
C2710
A_GND
68uF
35V
LNB
C2705
A_GND
0
R2706
OPT
0
R2705
OPT
SX34
40V
LNB
D2700
SX34
40V
LNB
D2702
0 . 1 u F
50V
C2712
LNB
A_GND
40V
ZD1
LNB
MBR230LSFT1G
30V
D2703
LNB
1uF
50V
C2713
LNB
A_GND
DVB-S2 LNB Part Allegro
DCDC_GND and A_GND are connected
( O p t i o n : L N B )
2.4A
I n p u t   t r a c e   w i d t h s   s h o u l d   b e   s i z e d   t o   c o n d u c t   a t   l e a s t   3 A
DCDC_GND and A_GND are connected in pin#27
c l o s e   t o   B o o s t   p i n ( # 1 )
2A
O u p u t   t r a c e   w i d t h s   s h o u l d   b e   s i z e d   t o   c o n d u c t   a t   l e a s t   2 A
Max 1.3A
PCB_GND and A_GND are connected
3A
c l o s e   t o   V I N   p i n ( # 2 5 )
2 0 1 2 / 1 1 / 0 5
DVB_S
27
LP63xH-ZA
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