Hitachi 42LDF30UB Service Manual page 82

Table of Contents

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VIDEO TERMINATIONS AND DIFFERENTIAL TRACING
Place 75R termination resistors
close to Paulo reference GNDs
16V
47N
R143
1
2
1
2
C0
SC2_C_IN
47R
75R
C432
1
2
R651
R650
C434
1
2
75R
R142
SC2_CVBS/Y_IN
1
2
Y0
47R
1
2
47N
SOGIN1
16V
16V
R653
47N
1
2
75R
S_VIDEO_C_IN
47R
1
2
C1
1
2
R145
C423
R652
C422
1
75R
2
R144
S_VIDEO_Y_IN
Y1
1
47R
2
1
2
47N
16V
R654
C424
1
75R
2
SC1_CVBS_IN
47R
CVBS1
1
2
1
2
R146
47N
16V
C612
R773
SOGIN0
1
470R
2
1
2
1N
R649
50V
C433
2
75R
1
R141
SAV_CVBS
1
47R
2
CVBS2
1
2
47N
R664
16V
C435
2
75R
1
R140
DVB_CVBS
1
47R
2
CVBS3
1
2
47N
R665
16V
2
75R
1
C421
R137
SC1_B
BIN0P
1
47R
2
1
2
47N
16V
C418
R138
GIN0P
SC1_G
1
47R
2
1
2
R667
47N
2
75R
1
16V
R666
2
1
75R
C417
R139
1
2
RIN0P
SC1_R
47R
1
2
47N
16V
R656
C428
2
1
75R
R149
SW_PB
1
2
BIN2P
47R
1
2
47N
16V
C426
R148
SW_Y
1
2
GIN2P
47R
1
2
47N
16V
C490
R657
R403
2
1
1
2
SOGIN2
75R
470R
1
2
1N
CVBS1_OUT
50V
R655
C427
2
1
75R
R147
SW_PR
RIN2P
1
47R
2
1
2
47N
16V
R659
C429
2
75R
1
R150
VGA_B
BIN1P
1
47R
2
1
2
47N
16V
C431
R151
VGA_G
GIN1P
1
47R
2
1
2
47N
16V
C491
SC1_CVBS_OUT
R658
R404
SOGIN1
2
75R
1
1
470R
2
1
2
1N
50V
R660
C430
2
75R
1
R152
VGA_R
RIN1P
1
47R
2
1
2
47N
16V
No. 0252
C148
U138
MST6WB7GQ-3
2
100N
17
74
VGA_HSNC
HSYNC1
AVDD_AU_1
10V
2
18
75
VGA_VSNC
VSYNC1
GND5
C152
19
76
VCLAMP
AUVRM
1
2
C151
100N
20
77
REFP
AUVRP
10V
1
2
C150
100N
21
78
REFM
AUVAG
10V
1
2
100N
22
79
BIN1P
AVDD_AU_2
BIN1P
AVDD_AU
10V
23
80
SOGIN1
LINE_IN_0L
LINE_IN_0L
24
81
GIN1P
LINE_IN_0R
GIN1P
LINE_IN_0R
25
82
RIN1P
LINE_IN_1L
RIN1P
LINE_IN_1L
C420
R133
26
83
BIN0M
LINE_IN_1R
1
47R
2
LINE_IN_1R
1
2
C149
47N
27
84
BIN0P
AUCOM
1
BIN0P
16V
1
2
C419
R134
100N
28
85
GIN0M
LINE_IN_2L
1
47R
2
LINE_IN_2L
10V
1
2
47N
29
86
GIN0P
GIN0P
LINE_IN_2R
LINE_IN_2R
16V
30
87
SOGIN0
SOGIN0
LINE_IN_3L
LINE_IN_3L
31
88
RIN0P
RIN0P
LINE_IN_3R
LINE_IN_3R
R686
32
89
AVDD_33
AVDD_33_3
LINE_IN_M ONO
1
33K
2
C143
33
90
GND3
LINE_OUT_3L
DSP_CH2_L
1
2
100N
34
91
HSYNC0
LINE_OUT_3R
DSP_CH2_R
10V
35
92
SC1_FB
VSYNC0
LINE_OUT_2L
DSP_CH4_L
R687
36
93
1
33K
2
VSYNC2
LINE_OUT_2R
DSP_CH4_R
37
94
BIN2P
BIN2P
LINE_OUT_1L
DSP_CH1_L
38
95
SOGIN2
SOGIN2
LINE_OUT_1R
DSP_CH1_R
39
96
GIN2P
GIN2P
LINE_OUT_0L
DSP_CH3_L
40
97
RIN2P
RIN2P
LINE_OUT_0R
DSP_CH3_R
41
C1
C1
42
Y1
Y1
43
C0
C0
44
Y0
Y0
45
CVBS3
CVBS3
46
CVBS2
CVBS2
47
CVBS1
CVBS1
C425
R132
48
1
2
VCOM1
47R
1
2
R512
47N
49
1
2
CVBS0
10K
16V
C416
R131
50
1
2
VCOM0
47R
1
2
47N
51
AVDD_33
AVDD_33_4
16V
52
C144
CVBSOUT1
2
1
53
CVBSOUT0
100N
10V
54
GND4
R350
1
2
100R
R351
CVBS0_OUT
1
100R
2
F119
SCART VIDEO OUTPUT AMPLIFIERS
5V_VCC
1
2
330R
1
Q146
2
BC858B
3
3
C378
Q119
2
CVBS0_OUT
2
1
BC848B
10U
1
R646
R620
10V
SC2_CVBS_OUT
1
75R
2
1
300R
2
2
Q154
R753
GAIN_SW2
2N7002
GAIN_SW1
1
4k7
2
1
3
F218
1
2
8V_VCC
600R
R679
1
1
2
82K
10V
10U
10V
100N
2
1
1
10V
16V
1
2
OUT1
C369
10U
1U
U119
R741
C146
2
2
1
SUBW_R
1
2
1
2
IN1-
20K
TL062
C368
C333
3
C344
V+
IN1+
C334
R740
2
1
4
SUBW_L
1
2
VSS
20K
1U
1
2
16V
1U
R465
16V
1
1K8
C522
1
10V
220N
10U
16V
SC1_AUD_R_OUT
2
1
C121
C375
S106
2
R692
1
2
2
33K
1
220P
50V
R678
1
1
82K
2
OUT1
C332
U118
R739
2
SC_1_R
1
20K
2
IN1-
2
1
TL062
1U
3
V+
IN1+
16V
4
VSS
C373
R156
SC2_AUD_R_OUT
1
47R
2
2
1
10U
10V
R690
10V
2
33K
10U
R155
LINE_R_OUT
2
1
1
47R
2
8V_VCC
C372
50V
220P
3
1
2
R522
BC848B
POP_MUTE
1
10K
2
2
C119
Q121
R676
R751
1
1
1
82K
2
OUT1
1
3k3
2
U117
2
IN1-
TL062
3
C331
V+
R737
IN1+
SC2/LINE_OUT_R
1
20K
2
Pin79
2
1
4
VSS
1U
16V
V+
33K
8V_VCC
1
2
Pin74
R685
AUDIO PREAMPLIFIERS
Place close to Paulo
DSP_CH2_L
C326
DSP_CH2_R
2
1U
1
16V
1
Q145
DSP_CH4_L
2
BC858B
3
3
C377
Q118
2
CVBS1_OUT
2
1
BC848B
10U
1
R645
R619
10V
1
75R
2
1
300R
2
Place close to Paulo
DSP_CH4_R
2
AUDIO OUTPUT FILTERS
Q155
R754
R790
2N7002
SC_1_R
1
4k7
2
1
1
100R
3
R791
SC1_L
1
100R
A/V Interface II
AUDIO INPUT VOLTAGE DIVISION AND DC BLOCK
Place close to Paulo
C513
1
2
LINE_IN_0L
100n
16V
8
10V
VDD
10U
7
OUT2
2
1
SUBW_OUT
C376
6
IN2-
LINE_IN_0R
5
3
IN2+
R523
BC848B
2
2
1
C521
10K
POP_MUTE
Q122
2
220N
1
2
16V
1
LINE_IN_1L
2
C512
F217
2
1
8V_VCC
1
2
600R
10V
R691
100n
10U
1
33K
2
16V
2
1
SC1_AUD_L_OUT
C120
C374
LINE_IN_1R
1
2
220P
8
VDD
50V
R677
7
OUT2
1
82K
2
C335
R738
6
IN2-
1
20K
2
SC1_L
LINE_IN_2L
1
2
1U
5
V+
IN2+
16V
10V
10U
R689
R154
2
1
SC2_AUD_L_OUT
1
33K
2
1
47R
2
LINE_IN_2R
C370
1
10V
10U
F219
R153
1
2
2
1
LINE_L_OUT
1
47R
2
LINE_IN_3L
600R
C511
C371
1
2
3
50V
R521
100n
BC848B
220P
2
2
10K
1
POP_MUTE
16V
Q120
1
2
8
VDD
1
C118
3k3
R675
2
1
LINE_IN_3R
R750
7
OUT2
1
82K
2
C330
R736
6
IN2-
1
20K
2
SC2/LINE_OUT_L
1
2
1U
5
IN2+
V+
16V
C443
R627
10V
1
2
DVB/YPBPR_SW
1K
2
1
100N
27P
U129
2
50V
PI5V330
DVB_PR
C147
S109
1
16
1
2
IN
VCC
R661
S110
2
15
1
2
1
2
S1A
EN
75R
3
14
RCA_PR
S2A
S1D
4
13
SW_PR
DA
S2D
5
12
DVB_Y
S1B
DD
6
11
C444
RCA_Y
S2B
S1C
S108
7
10
1
2
DB
S2C
2
1
S112
8
9
1
2
GND
DC
27P
R662
50V
1
2
SW_Y
75R
R228
1
2
100R
HP_L
DSP_CH1_L
22K
1
2
R419
R229
1
100R
2
HP_R
DSP_CH1_R
22K
1
2
R420
R224
1
100R
2
SC2/LINE_OUT_L
C550
22K
2
1
1
2
R415
DSP_CH3_L
10N
R626
16V
1
1K
2
SUBW_L
C329
2
1U
1
16V
R225
DSP_CH3_R
1
100R
2
SC2/LINE_OUT_R
C551
22K
2
1
1
2
R416
10N
R625
16V
2
SC2/LINE_OUT_R
1
1K
2
SUBW_R
C328
2
1U
1
2
SC2/LINE_OUT_L
16V
C340
R607
1
2
22K
SC1_AUD_L_IN
1
2
1U
16V
C493
R513
1
2
10K
1
2
1N
C341
R606
50V
1
2
22K
SC1_AUD_R_IN
1
2
1U
16V
C492
R514
1
2
10K
1
2
1N
C338
R605
50V
1
2
22K
SC2_AUD_L_IN
1
2
1U
16V
C495
R515
1
10K
2
1
2
1N
C339
R603
50V
1
22K
2
SC2_AUD_R_IN
1
2
1U
16V
C494
R516
1
10K
2
1
2
1N
C336
R601
50V
1
22K
2
YPBPR_AUD_L_IN
1
2
1U
16V
C497
R517
1
10K
2
1
2
1N
C337
R600
50V
1
22K
2
YPBPR_AUD_R_IN
1
2
1U
16V
C496
R518
1
10K
2
1
2
1N
C343
R599
50V
1
22K
2
SAV_AUD_L_IN
1
2
1U
16V
C498
R519
1
10K
2
1
2
1N
C342
R598
50V
1
22K
2
SAV_AUD_R_IN
1
2
1U
16V
C499
R520
1
10K
2
1
2
1N
50V
DVB/YPBPR SWITCH
1
F151
C445
1
2
5V_VCC
330R
1
2
27P
DVB_PB
50V
RCA_PB
R663
2
1
75R
S107
S111
1
2
1
2
SW_PB
R227
1
2
100R
MAIN_L
22K
1
2
R418
R226
1
100R
2
MAIN_R
22K
1
2
R417
R223
1
100R
2
SC1_L
22K
1
2
R414
R222
1
100R
2
SC_1_R
22K
1
2
R413

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