Sony VPL-PX20 Service Manual page 130

1
CN3000 IC3004 +3.3V REG
B35 SUB+5V
I O SUB+3.3V
A35
B34
A34 IC3007 +5V REG
B33 +6V
I O D+5V
A33
B32
A32
Q3301,3302
B30 SCL1100K SCL100K
A30 SDA1100K BUS SW SDA100K
B28 POWER PROT
A28 FAN CONT2
B27 FAN PROT2
2 A27 FAN CONT1
B26 FAN PROT1
Q3003
A26 POWER ON
BUFF
B25 FIL COVER
A25 IRDB
B24 IRDA
A24 PANEL TEMP
B23 AUDIO MUTE
A23 AUDIO CE
A22 SCLK
B21 SDAT
A21 PIC MUTE
B20 INTERLACE
B19 PANEL LINK
A19 P94
22
B18 P97
A18 P96
TO BB BOARD TP3206
B17 PW-OSD ENA OSD CS3
CN307
VSO
3 A17 OSD CS OSD CSO
B15 VSD
A15 VD
A14 HD
B12 RXD S/C
A12 TXD S/C
Q3000,3001
B10 SCL 400K
A10 SDA 400K BUS SW
A9 S/C RES
IC3303
USB HUB CNTL
B8 USB P.FLG
32 USB P.FLG X1
A8 USB P.ENA
40 USB P.ENA
B6 DS2-
13 D21 X2
A6 DS2+
12 D20
B4 DS1-
10 D11 D31 15
A4 DS1+
9 D10 D30 14
4
B2 US-
8 UD1
A2 US+
7 UD0 RESET 6
B9 MS P.ENA
41 MS P.ENA
+3.3V
B14 US VBUS
SW DVDD,AVDD
(IC3303)
Q3306,3307
+5V
SW VDD
(IC3304)
Q3309,3310
5
A B
IC3204
MAIN CPU
IC3006
BUFF
FAN CONT2
1 OUT2 IN2 3 100 FAN CONT2 LAMP NORM/ECO
FAN CONT1
7 OUT1 IN1 5 99 FAN CONT1
LAMP PROT 97
TP3301 TP3302
LAMP ON
SCL100K SDA100K
4 SCL100K
6 SDA100K NF ON 14
114 POWER PROT NR ON 15
104 FAN PROT2
LAMP TEMP 95
98 FAN PROT1 LAMP COVER
40 POWER ON MOUSE ENA 62
100 FIL COVER
96 PANEL TEMP
50 AUDIO MUTE MOUSE A/B
49 AUDIO CE
115 SCLK
117 SDAT
27 PIC MUTE SIRCS 12
26 INTERLACE
41 PANEL LINK
105 P94 RXD RS
108 P97
TP3203 TP3202 107 P96
VD HD 66 OSD CS3 TXD RD
43 OSD CS0
30 VSO
TP3204 TP3205 30 VD
SCL400K SDA400K LIGHT ON 34
31 HD P.SAVE LED 35
60 RXD S/C LAMP LED 36
61 TXD S/C TEMP LED 37
POWER LED 38
1 SCL400K
2 SDA400K
3
110 S/C RES
IC3304
USB MONITOR CTRL
X3301 X3302
4MHz 24MHz
26 2 OSC OUT PCO 7 45 USB REQ EXTAL 77
25 3 OSC IN SCL USB 24 57 SCL USB
SDA USB 28 55 SDA USB
DS3-
32 USBDM
DS3+
31 USBDP
8 RESET
IC3201
+5V
RESET
2 VDD OUT 1 WDTOVF 67
IC3202
+3.3V
RESET
2 VDD OUT 1
SCL40OK,SDA400K
C
Y, S, NF, NR Y, S, NF, NR
IC3402
SCMTINV
Q3303
9 1 1A 1Y 7 6 3A 3Y 2 BUFF
3 2A
39
IC3301
IRDA FILTER
7 IREN1 IR1N1 2
6 IREN2 IR1N2 3
IROUT 5
102
IC3302
IC3002(2/2)
2 7
6
3 IRDB
1
5
IC3002(1/2)
2
7 IRDA
63
1
IC3003
2 4
IC3401
ANALOG SW
23 2 O/I I/O 1
4 COND
22
+5V-2
KEY0 93
KEY1 94
X3200
12.288MHz
XTAL 75
FWE 74
MD1 119
MD2 120
+5V-1
IC3203
IC3200
EEPROM
5
3
RES SW 8 VCC
RES 71
6
Q3200,3201
SCL400K
6
SDA400K
5
8-10 8-10
D E
CN3002
LAMP MODE 4
BALAST
LAMP PROT 3
Q3002
LAMP ON 1
BUFF
CN3005
SIRCS-NF 8 2
SIRCS-NR 5
LAMP TEMP 3
LAMP COVER 1
2
CN3003
SIRCS-S 6
SIR CS 5
23
RXD RS
2
TO QD BOARD
CN1903
TXD RD 1
3
1
CN3001
LIGHT ON 1
P.SAVE LED 2
LAMP LED 3
TEMP LED 4
POWER LED 5
+5V-1
KEY0 6 12
KEY1 7
SUB+5V 9 TO H BOARD
CN3500
D+5V 10
12
CN3010
TXD 1
RXD 3
RES 4
VIN 5
FLASH
FWR 6
MD1 7
MD2 8
Y(MPU)
F
NF(SIRCS RECEIVE FRONT)
CN3600 IC3600IR-RX
SIRCS-NF
OUT
NR(STRCS RECEIVE REAR)
CN3700 IC3700 IR-RX
SIRCS-NR
OUT
S(LAMP TEMP/COVER SW)
CN2020
TH2020
LAMP TEMP
LAMP COVER
Y, S, NF, NR BLOCK
VPL-PX20/PX30
G H