Hitachi 22LD3750DC Service Manual page 31

FLASH PROG. & VCTI DEBUG
CN113
S126
1 12 +3V3
S123
12
2 KEY
3
S124
4 12 HWSDA
S125
12
5 HWSCL
MSTAR DEBUG
R317 R445
+5V
12 10k 12 33k +3V3
R316
CN103 2
12
R229 10k +3V3
1 12 100R 1 3 Q125 TV_RXD
BC848B
R230
Q122
2 12 100R TV_TXD
BC848B
3 1
R318 R315
3 +5V 12 12
10k R444 2 10k +3V3
+3V3 12
33k
4 +5V
C101
2
10p
1
50V R534
KEYPAD OPS.
12 100R IR
CN105
S101
1 12
SOFT_SW
C5V1
R129
2 12 2k7
2 1
D137
C554
2
3 100n
1
16V
S181 S122
4 12 12
KEY
TOUCHPAD OPS.
CN130
1
IR INTERFACE
2
CN114
3
F174 1
S158
12 12
4 3V3_STBY
S159
600R
2 12
S183 S161
5 12 12
S160
3 12
S184
6 12
S119
4 12
7 HWSDA
5
8
HWSCL
S120
2 1
TUNER I2C & AGC
C111
U692
2
1u
74HCT4053
1
16V F147
1 16
SCL_DVB 2Y1 VCC 12
+5V
2 15 600R
SCL_5V SCL_5V
2Y0 2Z SCL_SW
3 14
AGC_DVB SDA_5V
3Y1 1Z SDA_SW
4 13
AGC_SW AGC_TV
3Z 1Y1 SDA_DVB
5 12
AGC_TV 3Y0 1Y0
SDA_5V
6 11
E S1
7 10
VEE S2
TV/DVB_SW
89
GND S3
C526
2
100u
EEPROM
1 16V
C427
2
10n
1
16V 1N4148 F138
1 8
E0 VCC 12
2 1 600R
U698 1 TP177 R166 D147
2 7
E1 WC WP 12 3k9 3V3_STBY
24C64
TP175 R231
1
3 6
E2 SCL
12 100R SCL_NVM
R232
45
VSS SDA 12
100R SDA_NVM
TP176 R167
1
12 3k9 3V3_STBY
No. 0249
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SD RGB INPUT FOR MST517 AUDIO LINE-OUT
+5V_VCTI R446
+3V3
12 33k
C373
R388
ROUT2 12
1k
12
1u
R389
50V
1 1
12 1k
Q160 Q163
BC858B 2 2 BC858B
3 3
ROUT ROUT1
+5V_VCTI
R447
+3V3
12 33k
C374
R390
LOUT2
12 1k
1 1 12
1u
Q161 Q164
R391
50V
BC858B 2 2 BC858B
12 1k
3 3
GOUT
GOUT1
+5V_VCTI
SCART AUDIO OUT
R449
+3V3 12
33k
1 1
C371
R384
Q162 Q165
LOUT3
12 1k
2 2 12
BC858B BC858B
1u
3 3
R385
50V
BOUT 12
BOUT1 1k
R448
+3V3 12
33k
C372
R386
ROUT3
12 1k
12
1u
R387
50V
12
1k
IR INTERFACE IR INTERFACE
R263
12 220R 3V3_STBY
R262
LED1
LED1 12 220R 5V_STBY
LED2
1
LED1 R179
Q159
12 LED_CTRL
LED2 4k7 LED_CTRL
2
BC858B
3
IR 3 R264
Q124
12 220R 3V3_STBY
C553
2 BC848B
100n R281
1 16V LED2 1
12 470R 5V_STBY
3
5V_STBY
R178
Q121
2 12 4k7 LED_CTRL
BC848B
1
WO/DVB I2C ISOLATION
S165
+3V3
12 SCL_SW 3V3_STBY
S166
12
SDA_SW
S167
12 SCL_NVM
AGC_SW
2
Q152
BSN20
1
3
3
Q174
2
HWSCL
BC848B
1
+3V3
3V3_STBY
SDA_NVM
2
3V3_STBY
Q153
BSN20
1
3
3
Q123
2
HWSDA
BC848B
1
Controller and AV Processor
C193
2
100n
1
16V R268
12 10R +8V
3
Q128
2
BC848B
F148
1 C513 +8V 12
600R
LINE_OUT_R
12
22u
R501 C448
16V 1
12 3u3
100k
2 50V
C429
C194
2
100n RESETQ
12
1
16V R267
470n
12 10R +8V
16V
3
Q117
2
C165
BC848B
2
1n
1 C514 1
50V
LINE_OUT_L R393
12
SWAUD_OUT_L 12
1k
22u
R392
16V
SWAUD_OUT_R
12 1k
C327
R394
SC_IN_L
12 1k
C195
12
2
C328
100n
220n
1 16V SC_IN_R
R269 12
16V
12
12 F137
10R +8V
220n
AGC_TV 12
16V
3 600R
R298 R176
C426
Q118 2
2 +5V
12 1k2 12 4k7 10n
S116
BC848B
IF1 12 1
16V
C510
C515 2
1
10u C147
2
1 10V
SC_L_OUT 10p
12
1
25V
22u S118
IF2 12
16V
S117
12
F101
+5V 12
C196
2 330R
F102
100n C532 C183
1
1 2
16V +5V 100u 12
R270 100n
1 330R
12 2 16V 16V
10R +8V
1
F150
3
+3V3 12
2
Q119 600R
2
C530
C182
1
BC848B 2
100u
100n
C516
1 2 16V 1 16V
F149
SC_R_OUT
12
1V8_STBY 12
22u
600R
C452
C529
16V C179
1
2
100u 100n
12
16V 1
2 16V
22p
50V
3V3_STBY 12
WP
3V3_STBY
3V3_STBY
12
IR
1N4148 +3V3
SC_FB
2 1
D109 D110
12 SC_B
ON/OFF
1N4148
SC_G
R177 1 TP105
2 C199
12 4k7 SILENCE
SC_R
12
100n
DVB_IN_CVBS
16V
C208
DVD_CVBS
12
100n
DVD_C
16V
SCL_3V3
DVD_Y
3
C184
1
BSN20
CVBS_IN
Q172 12
100n
2 SC_V_IN
16V
2
Q155
BSN20
1 R217
3
IF_CVBS_OUT
3 12 100R
Q175
2
HWSCL
BC848B
1 F151
1V8_STBY 12
600R
SDA_3V3
3
1
BSN20
R431
Q173
12 100R
2
R430
2
12
100R
Q154
R429
BSN20
3V3_STBY
1 12 100R ON/OFF
3
3
3
Q126
2
HWSDA R187
BC848B
Q120
POWCON 12 2
4k7
BC848B
1
1
C527 C178 C187 C528
2 1 88 2
2 2
GND1 GND8
100u 100n 100n 100u
1 1
1 16V 16V 16V 1 16V
2 87
12
VSUP8.0AU VSUP5.0BE
S115
3 86
VREFAU TEST 12
2
C177 R369
4 85
2
MAIN_L SPEAKERL VERT+ 12
100n 22k
1
16V
5 84
MAIN_R
SPEAKERR VERT-
R542
6 83
SWITCH_SOUND_L
AOUT1L EW 12 10k
7 82
C567
SWITCH_SOUND_R AOUT1R RSW2
8 81 12
HP_L
AIN3L/AOUT2L RSW1
C164
1u
2
1n
16V
9 80
1 HP_R
50V AIN3R/AOUT2R SENSE
R168
10 79
AIN2L GNDM 12
3k9
R288
11 78
C162
AIN2R FBIN 12 15k
C204
R280
12
12 77
AIN1L RIN 12 470R
1n 12
C205
R395 R278
50V 100n
13 76
C163
SIF/AIN1R GIN
1k 12 470R
16V
12
R279
100n
12 14 75
TAGC BIN 12
470R
1n 16V
C202 C189
50V
15 74
VREFIF SVMOUT
Z101 12 12
100n 100n
14 IN1 OUT1 16 73
IFIN- ROUT
ROUT
16V 16V
X6966M
2 IN2 OUT2 5 17 72
IFIN+ GOUT
GOUT
GND
18 71
RESETQ
RESETQ BOUT BOUT
19 70
GNDIF VRD
F105
R396 C190
20 69
2
12 VSUP5.0IF XREF 12
1k 100n
200R 1
16V
C531 C180
21 68
2
100u 100n VSUP3.3DIG VSUP3.3BE
16V 1
16V C534
C191
GND7 1
22 GND2 67 2
U701
F106 100n 100u
12 1 16V 16V
2
23 66
200R VCT4953
GND3 GND6
24 65
C453
VSUP1.8DIG VSUP3.3IO 12
C533
C186
12 1
25 64 2
X104
XTAL1 VSUP3.3DAC 100n 100u
22p
1 16V
16V 2
50V
12 26 63
XTAL2 GNDDAC
R180
20.25MHz
1 TP153
4k7
27 62
P22 SAFETY
R312 VCTI_HS
10k R221
28 61
R189 12 100R P23 HFLB
12 4k7 R313
29 60
VIN11 HOUT
12 10k
C197
R275
30 59
12 VIN10 VPROT
470R
12
C198
R276
100n
31 58
12 470R VIN9 SDA R181
16V
12
R277 12 4k7 3V3_STBY
100n
32 57
12 470R VIN8 SCL R182
16V
C207
R220 12 4k7 3V3_STBY
33 56
12 VIN7 P21/PWMV
100R R299
12
12
R218 1k2 3V3_STBY
100n
34 55
12 100R VIN6 P20/DFVBL R175
16V
R219 12 4k7 3V3_STBY
35 54
12 100R VIN5 P17 R183
C200
R485 12 4k7 3V3_STBY
36 53
VIN4 P16
12 100R R188
12
C201
12
R486 R426 4k7
100n
37 52
12 VIN3 P15 12 82k R381
16V 100R
12
R222 R224 12 27k
100n
38 51
C454
12 100R VIN2 P14 12 100R
16V
C181
R223 R102 12
39 50 12
VIN1 P13
12 100R 12 22R R186
22p
12
12
100n 50V
40 49
VOUT1 P12
R184
16V
C537
F139 12 4k7 +3V3
41 48
12
VOUT2 P11 R185
12
600R
12 4k7 +3V3
100u 42 47
VOUT3 P10
R311
16V
12 F152
10k
43 46
VSUP1.8FE VSUP3.3FE 12
600R
C535 C536
C185 C188
1 1
44 45
2 2
100u 100n GND4 GND5 100n 100u
16V 1 1 16V
2 16V 16V 2
F103
+5V
330R
TV/DVB_SW
100k
1 3
R462
Q127
2
BC848B
C203 R541 +3V3
2
100n 1 12 10k
1
16V
HD_SW
R101
3
12
10k
Q195
2
BC848B
R543
1
12 10k
DVD_SENSE
DVB_IN_R
DVB_IN_G/Y
C206
DVB_IN_B/C
12
100n
16V
C471
2
4u7
1
10V
F153
12
+3V3
600R
F159
3V3_STBY
60R
R225 1 TP160
12 100R HWSDA
R226 1 TP161
12 100R HWSCL
CS
HDMI_HP_INV
POWCON
DVD_IR_ON/OFF
+3V3
SC_PIN8
R435 KEY
2k2 3V3_STBY
IRQ
4k7 R227 +3V3
12
100R TV_TXD
R228
12 100R TV_RXD
PROTECT
MST_RESET
3V3_STBY