JVC LT-37DR1BJ Service Manual page 53

MAIN PWB CIRCUIT DIAGRAM (12/13)
LC4858
NQR0628-004X
BL_ON_MP
MAIN PWB
ANA_DIM_I_MP
(9/13)
MAIN_POW_MP
R4857
PFC_POW_MP
OPEN
R4856
OPEN
CN4701
QGA2013C1-15W
AU_VCC 1
LB_PRO 2
AU_GND 3
PFC_POW 4
STB_5V 5
MAIN_POW 6
POWER PWB
DC_DIM 7
R4860
CN9005
DIM_CTL/GND 8
OPEN
24V 9
POWER_GOOD/10V 10
10V 11
GND 12
GND 13
R4851
GND 14
OPEN
BL_ON/BT 15
LC4851
NQR0450-001X
R4812
10k
C4851
*LC4856
0.1 /16
NQR0450-008X
DIM_CTL_MP
R4852
MAIN PWB
OPEN
(9/13)
LC4857
LC4852
NQR0450-008X
NQR0415-006X
POWER_GOOD_MP
C4852
0.1 /25
R4853
OPEN
LC4853
NQR0450-001X
C4853
0.1 /50
R4854
OPEN
LC4854
NQR0415-005X
C4854
0.1 /25
Q4811
RSR025P03-X
R4855
OPEN
R4811
10k
LC4855
OPEN
C4855
OPEN
Q4812
RT1N441C-X
UN2213-X
K4871 K4872
SHORT SHORT
K4873 K4874
SHORT SHORT
IC4871 NRSA02J-0R0X NRSA02J-0R0X
SI-8005Q-X
R4872
NRSA02J-0R0X 4.7k
C4873 C4876
R4877
0.01 0.01
SHORT
BS SS
IN EN
OUT COMP
GND FB
R4873
100k
3D 3D
R4875 R4876
100k 18k
C4874
C4877 L4871
560p D4872
OPEN NQLF3EM-150X
OPEN
3D 3D
C4875
R4871 R4874
C4871 C4872 D4874
24k 5.1k
3.3 3.3 OPEN KDZ16B-X
NCJ41HK-335X-U D4871 D4873 C4878 C4879
EC30HA04-X EC30HA04-X
22 /16 22 /16
NCJ41CM-226X-U
NRS12BJ-332W
R4821
3.3k
R4826
1/2W 3D
6.8k IC4821
3D R4824 S393-X
27k
R4822
4.7k
VCC
C4822
0.1
/25
GND
D4821 C4823 C4824
UDZW9.1B-X 0.1 /25 0.1 /25
D4822
MA111-X
R4833
OPEN
R4831
OPEN
D4831
OPEN
Q4831
OPEN
R4832
OPEN
R4838
R4837
2.2k
OPEN
D4832
!
MA111-X NEHM1HM-105X
R4834 R4835
1SS355W-X
15k 6.8k
!
D4834
MA111-X
Q4833
1SS355W-X
RT1N441C-X
!
UN2213-X D4833 Q4832
D4861 R4861
MA111-X 2SC3928A/QR/-X
UDZW3.3B-X 22k
1SS355W-X R4836 2SC1623A/5-6/-X C4861
MA8033-X
1.2k 1/50
R4858
OPEN 3D
R4842
56k
*R4846
3D
IC4842
R4843
PQ1LAX95MS-X 7.5k
R4850
OPEN R4849 K4841
0 SHORT
Vadj Vout
GND
*R4859
SW Vin
R4841
0
3D
R4844
10k C4844
C4843 10 /16
10 /16
R4848 R4847
OPEN OPEN
R4845
OPEN
IC4811
MM3141YN-X
K4811
SHORT
VDD VOUT
GND
CE NC
B1
C4811 C4812
10 /10 10 /6.3
IC4812
MM3143DN-X
NRSA63J-0R0X
VDD VOUT
C4815
K4812
GND OPEN
SHORT
R4813
B1 CE NC 470
C4813 C4814
10 /10 10 /6.3 NRSA02J-471X
(No.YA688<Rev.001>)2-29
MAIN PWB ASS'Y(12/13)
SFY-1008A-H3
C4703 C4706
K4701
0.01 /50 0.01 /50
SHORT NRSA02J-100X
R4710 10 R4708
BS SS 0
IN EN
R4709
OUT COMP
OPEN
K4702
GND FB
SHORT
3D
R4703
39k
IC4701
SI-8005Q-X
C4707
OPEN
C4705
560p
CH 3D
NCJ41HK-335X-U NCJ41HK-335X-U
C4704 R4701
C4701 C4702 3D
OPEN 24k
3.3 /50 3.3 /50 R4702
C4880
OPEN 5.1k
IC4731
MB39A136PFT-X
CTL1 CB1
NRSA02J-0R0X
R4752
0`
3D 3D CS1 DRVH1
R4733 R4736 C4735
C4738
2.2k 10k 0.022 /50
0.1 /50
FB1 LX1
3D
C4734
R4740 R4753
0.0015 /50
15k 0`
COMP1 DRVL1
NRSA02J-0R0X
C4731 R4737
OPEN OPEN
ILIM1 VCC
3D 3D
R4743 R4746
75k 100k
R4731
RT VB
0
3D
R4741
15k
VREF GND
3D
R4747
100k
CTL2 DRVL2
3D
R4744
56k ILIM2 LX2
3D
R4742
15k
R4732
OPEN COMP2 DRVH2
R4734 C4732
C4733
OPEN OPEN C4741
0.0015 /50 0.1 /50
FB2 CB2
3D 3D
CS2 MODE
R4738
R4735
1.5k
10k
3D
R4739
15k
C4736 3D C4737
R4745
0.022 /50 0.1 /25
56k
R4795
0 3D
3D
R4780
R4782
27k 56k
R4794 3D
R4781
OPEN Q4774 R4783
OPEN 330k
RT1N241C-X
UN2212-X
R4793
33k
Q4773
RT1N241C-X
CH
UN2212-X R4784
C4784 C4785
0
OPEN 330p /50
C4779
R4778
0.01 /50 4.7k
NRSA02J-390X
R4779
39
C4778 C4780 C4781 C4782 C4783
10 /16 10 /16 10 /16 OPEN
0.047 /50
C4777
0.01 /50
C4776
0.01 /50
16 15 14 13 12 11 10 9
IC4771
THV1023-X
1 2 3 4 5 6 7 8
3D
R4785
R4771
0
B1 15k
C4771
R4772
2.2 /16 OPEN
C4773
R4777
0.01 /50 39
C4772 NRSA02J-390X
0.1 /25
C4790 C4791 C4792
10 /16 10 /16 10 /16
R4776
R4774
82k CH
27k
R4786 C4795
C4794
OPEN 2k 150p /50
R4775
OPEN 3D
3D
R4789
R4787
33k
27k
C4775 C4774 R4773
0.01 /50 18k
0.01 /50 3D
R4788 R4790
OPEN 330k
2-30(No.YA688<Rev.001>)
+------------+------------+------------+------------+---------------+
| |32DR1
|reference |Diff
+------------+------------+------------+------------+---------------+
|# LC4856 |OPEN
+------------+------------+------------+------------+---------------+
|# R4846 |NRSA63J-0R0X|OPEN
+------------+------------+------------+------------+---------------+
|# R4859 |OPEN
+------------+------------+------------+------------+---------------+
24V
STB5V
R4711
R4707
2.2k OPEN
3D
R4704
8.2k
NRSA02J-0R0X
K4703
SHORT
L4701
R4705
NQLF3EM-150X
6.8k
K4704
D4704 SHORT R4706
KDZ6.8B-X NRSA02J-0R0X 1.8k
C4709
22 /16
NCJ41CM-226X-U
NCJ41CM-226X-U
D4701 D4702 D4703
C4708
EC30HA04-X OPEN EC30HA04-X
22 /16
D4731
MA2SD31-X
NRSA02J-0R0X
K4731
SHORT
D4732
S1 L4731
D1
NQLF3EN-4R7X K4732
1 8 SHORT
MA2SD31-X
G1 D1
2 7 NRSA02J-0R0X
S2 D2 D4733
OPEN C4746 C4748 C4750
3 6 10 /6.3
10 /6.3 10 /6.3
G2 D2
C4739 4 5
0.01 /50
C4744
Q4731
10 /16
TPC8208-X C4742
10 /16
B1
C4740
2.2 /16
NRSA02J-0R0X
NRSA02J-0R0X S1 D1
K4733
1 8
SHORT
R4754 G1 D1
0`
2 7
L4732
K4734
NQLF3EM-100X
S2 D2 SHORT
3 6
G2 D2 NRSA02J-0R0X
4 5
R4755 D4734
OPEN C4749 C4751
0` C4747
Q4732 C4743 C4745 10 /6.3 10 /6.3 10 /6.3
NRSA02J-0R0X
TPC8208-X 10 /16 10 /16
R4791
0
Q4771
RSS040P03-X
L4771
NQLF3EM-100X NRSA02J-0R0X
K4771
SHORT
D4772
OPEN
C4786 C4787 C4788 C4802 C4789
D4773
OPEN 10 /6.3 10 /6.3 10 /6.3 0.1 /16 10 /6.3
D4771
EC30HA03L-X
C4883
OPEN
/50
NRSA02J-0R0X
Q4772
K4772
RSS040P03-X
SHORT
L4772
NQLF3EM-100X
K4773
SHORT
NRSA02J-0R0X
C4796 C4797 C4798 C4801 C4799
D4775
10 /6.3
EC30HA03L-X 10 /6.3 10 /6.3 10 /6.3 0.1 /16
C4793
OPEN
D4774 D4776
OPEN
EC30HA03L-X
R4792
0
|37DR1 |42DR1 |DV1 |
|Diff |Diff |Diff |
|OPEN |OPEN |NQR0450-008X |
|OPEN |OPEN |
|NRS12BJ-560W|NRS12BJ-560W|NRS12BJ-560W|
MAIN PWB
(9/13),(11/13),(13/13)
LCD_POW_1
MAIN PWB
LB_POW
24V (9/13),(11/13)
5V
!
D4705
MA111-X
1SS355W-X
Q4701
2SC3928A/QR/-X
2SC1623A/5-6/-X
R4748 R4749
OPEN
OPEN
1.25V
C4752 C4754 C4756
10 /6.3 10 /6.3 10 /6.3
1.2V
R4750 R4751
0 0
C4757
C4753 C4755
10 /6.3 10 /6.3 10 /6.3
NRS12BJ-470W NRS12BJ-470W
3.3V
R4797 R4799
47 47
1/2W 1/2W
3D
3D
R4882 R4883
IC4881
PQ035ZM02Z-X 22k 4.7k
VB Vout 1.8V
Vadj
C4882
10 /6.3
Vin GND
R4798 R4796
33 33
1/4W 1/4W
NRS144J-330X
C4881
10 /6.3
2.5V
R4881
R4885
47
1/2W 47
1/2W
NRS12BJ-470W NRS12BJ-470W
MAIN PWB
LB_PRO
9V (9/13),(11/13)
STB1.25V
STB3.3V
STB5V
LCD5/12V
MAIN PWB(1/13)
BT
AUAUDIO_VCC (13.5V)
AU_GND (AUDIO_GND)
D_GND
A_GND
c10611001a011_0204_11/13_0.1