Hitachi 22LD3750DC Service Manual page 31

FLASH PROG. & VCTI DEBUG
CN113
S126
12
1 +3V3
S123
2 12 KEY
3
S124
4 12
HWSDA
S125
5 12
HWSCL
MSTAR DEBUG
R317 R445
+5V
12 10k 12 33k +3V3
R316
CN103 2
R229 12 10k +3V3
1 Q125
12 100R 1 3 TV_RXD
BC848B
R230
Q122
2 12 100R TV_TXD
BC848B
3 1
R318 R315
+5V
3 12 10k R444 2 12 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
4 12 3V3_STBY 12
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
TUNER I2C & AGC
C111
U692
2
1u
74HCT4053
1 16V F147
1 16
SCL_DVB 2Y1 VCC 12
+5V
2 15 600R
SCL_5V
2Y0 2Z SCL_SW
3 14
AGC_DVB
3Y1 1Z SDA_SW
4 13
AGC_SW
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 D147
R166
2 7
E1 WC 12
WP 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
SD RGB INPUT FOR MST517 AUDIO LINE-OUT
+5V_VCTI R446
+3V3
12 33k
C373
R388
ROUT2
12 1k
12
1u
50V
1 1
12
Q160 Q163
2 2
BC858B BC858B
3 3
ROUT
ROUT1
+5V_VCTI
R447
+3V3
12 33k
C374
R390
LOUT2
12 1k
1 1 12
1u
Q161 Q164
50V
BC858B 2 2 BC858B
12
3 3
GOUT
GOUT1
+5V_VCTI
SCART AUDIO OUT
R449
+3V3
12 33k
1 1
C371
R384
Q162 Q165
LOUT3
12 1k
2 2
BC858B BC858B 12
1u
3 3
50V
BOUT 12
BOUT1
R448
+3V3
12 33k
C372
R386
ROUT3
12 1k
12
1u
50V
12
IR INTERFACE IR INTERFACE
R263
12 220R 3V3_STBY
R262
LED1
LED1 12 220R 5V_STBY
LED2
1
LED1 R179
Q159
LED_CTRL
LED2 12 4k7 LED_CTRL
2
BC858B
3
IR R264
Q124
12
C553 220R 3V3_STBY
BC848B
2
100n R281
1
16V LED2 12
470R 5V_STBY
3
1 5V_STBY
R178
Q121
2 12
4k7 LED_CTRL
BC848B
1
WO/DVB I2C ISOLATION
S165
SCL_5V 12
SCL_SW 3V3_STBY
S166
SDA_5V 12
SDA_SW
S167
AGC_TV 12 SCL_NVM
AGC_SW
2
Q152
BSN20
1
3
3
Q174
2
HWSCL
BC848B
1
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
C513
1 +8V
R389
1k LINE_OUT_R
12
22u
R501
16V 1
12
100k
2
C429
C194
2
100n RESETQ
12
1 16V
R267
470n
12 10R +8V
16V
3
Q117
2
BC848B
1 C514
R391
1k LINE_OUT_L R393
12
SWAUD_OUT_L
12 1k
22u
R392
16V
SWAUD_OUT_R
12 1k
C327
SC_IN_L
C195
12
2
C328
100n
220n
1 SC_IN_R
16V R269
16V
12
12 10R +8V F137
220n
AGC_TV
12
16V
3 600R
R298 R176
Q118
+5V
2 12 1k2 12 4k7
S116
BC848B
IF1
12
C510
C515 2
1
R385 10u
1
10V
1k SC_L_OUT
12
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
16V 16V
12 10R +8V 2
F150
3
+3V3 12
Q119 600R
2
C530 C182
BC848B 1
2
100u
100n
C516
1 16V 1 16V
R387 2
1k SC_R_OUT F149
12
1V8_STBY 12
22u
600R
C529
16V C179
1
2
100u 100n
16V 1
2 16V
3V3_STBY
WP
3V3_STBY
3V3_STBY
IR
1N4148 +3V3
SC_FB
2 1
D109 D110
SC_B
12 ON/OFF
1N4148
3
1 TP105 SC_G
R177
2 12
4k7 SILENCE
SC_R
1
DVB_IN_CVBS
DVD_CVBS
DVD_C
SCL_3V3
DVD_Y
3
+3V3
1
BSN20
CVBS_IN
Q172
2 SC_V_IN
2
Q155
BSN20
1
3
IF_CVBS_OUT
3
Q175
2
HWSCL
BC848B
1
1V8_STBY
SDA_3V3
3
+3V3
1
BSN20
R431
Q173
12
100R
2
R430
2
12
100R
Q154
R429
BSN20
1 3V3_STBY 12
100R
3
3
3
Q126
2
HWSDA R187
BC848B
POWCON 12 2
4k7
1
1
C527 C178 C187
2 1 88
2 2
100u 100n GND1 GND8 100n
1 1
F148 1 16V 16V 16V
2 87
12 VSUP8.0AU VSUP5.0BE
600R
S115
3 86
VREFAU TEST 12
C448 C177 R369
4 85
2
3u3 MAIN_L SPEAKERL VERT+ 12
100n 22k
1
50V 16V
5 84
MAIN_R SPEAKERR VERT-
6 83
SWITCH_SOUND_L AOUT1L EW
12
7 82
SWITCH_SOUND_R AOUT1R RSW2
8 81
HP_L AIN3L/AOUT2L RSW1
C165 C164
2 2
1n 1n
9 80
1 1 50V HP_R
50V AIN3R/AOUT2R SENSE
R168
10 79
AIN2L GNDM 12 3k9
R288
11 78
C162
AIN2R FBIN 12 15k
R394 R280
12
12 77
12 1k AIN1L RIN 12 470R
1n
R395 R278
50V
13 76
C163
12 1k SIF/AIN1R GIN 12 470R
12 14 75
TAGC BIN 12
1n
C202 C189
C426 50V
15 74
2
10n VREFIF SVMOUT
Z101
12 12
1
16V
100n 100n
14 16 73
IN1 OUT1
IFIN- ROUT
C147
16V 16V
2 X6966M
10p
2 IN2 OUT2 5 17 72
1
25V IFIN+ GOUT
GND
18 71
RESETQ RESETQ BOUT
19 70
GNDIF VRD
F105
R396
20 69
12 VSUP5.0IF XREF 12
1k
200R
C531 C180
1 21 68
2
100u VSUP3.3DIG VSUP3.3BE
100n
16V 1 16V
2 C191
22 GND2 GND7 67
2
F106 U701
100n
12 1 16V
23 66
200R
VCT4953
GND3 GND6
24 65
C453
VSUP1.8DIG VSUP3.3IO
C452
C186
12
25 64 2
X104
XTAL1 VSUP3.3DAC 100n
12 22p
1
16V
50V
22p 12
26 63
R180 XTAL2 GNDDAC
50V 20.25MHz
12 4k7 1 TP153
27 62
R312 P22 SAFETY VCTI_HS
12 10k R221
28 61
R189 12 100R P23 HFLB
12 4k7 R313
29 60
VIN11 HOUT 12 10k
C197
R275
30 59
12 470R VIN10 VPROT
12
C198
R276
100n
31 58
12 VIN9 SDA
470R R181
16V
12
C199
12
R277 4k7
100n
32 57
12 VIN8 SCL
470R R182
16V
12
C207
12
R220 4k7
100n
33 56
12 VIN7 P21/PWMV
100R R299
16V
12
12
R218 1k2
100n
34 55
12 VIN6 P20/DFVBL
100R R175
16V
C208
12
R219 4k7
35 54
VIN5 P17
12 100R R183
12
C200
R485 12 4k7
100n
36 53
VIN4 P16
12 100R
16V
12
C201
R486 R426
100n
37 52
VIN3 P15
12 100R 12 82k
16V
12
C184
R222 R224
100n
38 51
C454
12 100R VIN2 P14 12 100R
16V
12
C181
R223 R102
100n 12
39 50
12 100R VIN1 P13 12 22R
16V
12 22p
50V
100n
40 49
VOUT1 P12 R184
16V
C537
R217 F139 12 4k7
41 48
12
12 100R VOUT2 P11 R185
12
600R
12 4k7
100u
42 47
VOUT3 P10 R311
16V
F151 12 10k
43 46
12 VSUP1.8FE VSUP3.3FE
600R
C535
C185 C188
1
44 45
2 2
100u 100n GND4 GND5 100n
16V 1 1
2 16V 16V
ON/OFF
Q120
BC848B
C528
2
100u
1 16V F103
12
+5V
330R
TV/DVB_SW
100k
2 1
3
R462
Q127
2
BC848B
C203 R541 +3V3
2
1 12
100n 10k
1
16V
R542
10k HD_SW
R101
3
C567
12 10k
Q195
2
12 BC848B
R543
1u
1
12 10k
16V
DVD_SENSE
C204
DVB_IN_R
12
C205
100n
DVB_IN_G/Y
16V
12
C206
R279
100n
470R DVB_IN_B/C
16V
12
100n
16V
ROUT
GOUT
BOUT
C190 C471
2 2
100n 4u7
1 16V 1 10V
F153
12
C534 +3V3
1
600R
100u
16V
2
F159
12
3V3_STBY
60R
C533
1
100u
16V
2
1 TP160
R225
12
100R HWSDA
1 TP161
3V3_STBY R226
12
100R HWSCL
3V3_STBY
CS
3V3_STBY
HDMI_HP_INV
3V3_STBY
POWCON
3V3_STBY
R188 DVD_IR_ON/OFF
12 4k7 +3V3
R381 SC_PIN8
12 27k
R435 KEY
12 2k2 3V3_STBY
R186 IRQ
12 4k7 R227 +3V3
12 100R TV_TXD
+3V3 R228
12 100R TV_RXD
+3V3
PROTECT
F152 MST_RESET
12 3V3_STBY
600R
C536
1
100u
16V
2