ViewSonic VA703b Service Manual page 72

11.4 Scaler
VDVI VMPLL VPLL
U401
VCC3.3
59
3 RIN
RIN0P
58
3 GNDR RIN0N
R489 R490 56
3 GIN
GIN0P
55
3 GNDG
GIN0N
10K 1/16W 10K 1/16W 57
3 SOG SOGIN0
54
3 BIN
BIN0P
53
3 GNDB
BIN0N
63
3 HSYNC HSYNC0
64
3 VSYNC
VSYNC0
65
3 DDCA_SDA
DDCA_SDA
66
3 DDCA_SCL DDCA_SCL
39
3 R+
RX2P
40
3 R- RX2N
42
3 G+ RX1P
43
3 G-
RX1N
45
3 B+ RX0P
46
3 B- RX0N
48
3 CLK+
RXCKP
49
3 CLK- RXCKN
36
3 DDCD_SDA DDCD_SDA
37
3 DDCD_SCL DDCD_SCL
51
AVDD
REXT
R403 390 1%
62
REFP
C401
VCC3.3 0.1uF 61
REFM
R486
U402
VCC3.3 8 2 70
VDD SDO SDO
C417 NC 7 1 71
HOLD# CE# SCZ
3 6 72
WP# SCK SCK
0.1uF 4 5 73
VSS SDI SDI
C418 +
WP
SST25VF010-20-4C-SAE
10uF/16V NC R487
19
RST
10K 1/16W
R404
10K 1/16W NC C421 22pF 32
XIN
X401
14.318MHz
33
XOUT
C423 22pF
VCC3.3
R407 NC 102
MODE[0]
R410 NC 104
MODE[1]
R415 R416
+5V
10K 1/16W 10K 1/16W
U406
3 2
VCC RST
ASM810MEURF-T
Reset
Circuit
+5V
R430
1K 1/16W
R431 0 1/16W
R432 0 1/16W
R433 NC
Volume
Q404
PMBS3904
ViewSonic Corporation
AVDD VDDP VDDC
11
VCTRL VCTRL 2
107 PA0
NC/LVACKP/NC
108 PA1
NC/LVACKM/NC
109 PA2
RA1P/LVA2P/RA2
PA3
110
RA1N/LVA2M/RA3
111 PA4
RA2P/LVA1P/RA4
112 PA5
RA2N/LVA1M/RA5
PA6
113
RA3P/LVA0P/RA6
114 PA7
RA3N/LVA0M/RA7
PA8
98
GA1P/NC/GA2 PA9
99
GA1N/NC/GA3
100 PA10
GA2P/NC/GA4
101 PA11
GA2N/NC/GA5
PA12
105
GA3P/LVA3P/GA6
106 PA13
GA3N/LVA3M/GA7
PA14
89
BA1P/NC/BA2
90 PA15
BA1N/NC/BA3
91 PA16 P[0..7]
BA2P/NC/BA4
PA17
92
BA2N/NC/BA5 PA[8..13]
93 PA18
BA3P/NC/BA6
94 PA19
BA3N/NC/BA7
PA[14..19]
PB0
9
RB1P/NC/RB2
10 PB1
RB1N/NC/RB3
15 PB2
RB2P/NC/RB4
PB3
16
RB2N/NC/RB5
17 PB4
RB3P/NC/RB6
18 PB5
RB3N/NC/RB7
PB[0..5]
2 PB6
GB1P/NC/GB2
3 PB7 PB[6..11]
GB1N/NC/GB3
5 PB8
GB2P/NC/GB4
PB9
6
GB2N/NC/GB5
7 PB10
GB3P/NC/GB6
8 PB11 PB[12..23]
TSUM16AK GB3N/NC/GB7
118 PB12
CLKAP/LVB3P/LHSYNC
119 PB13
RSDS/LVDS/TTL
CLKAN/LVB3M/LVSYNC
PB14
120
CLKBP/LVBCKP/LCK_ODD
121 PB15
CLKBN/LVBCKM/LDE
122 PB16
NC/LVB2P/NC
PB17
123 GPO[0..4]
NC/LVB2M/NC
PB18
124
BB1P/LVB1P/BB2
125 PB19
BB1N/LVB1M/BB3
126 PB20
BB2P/LVB0P/BB4
PB21
127
BB2N/LVB0M/BB5
128 PB22
BB3P/NC/BB6
1 PB23
BB3N/NC/BB7
80 ESP
ESP
81 OSP
OSP
88 GPO0
GPO0
87 GPO1
GPO1
86 GPO2
GPO2
85 GPO3
GPO3
84 GPO4
GPO4
83
GPO5
82
GPO6
75
GPIO_P22
74
GPIO_P23
26
GPIO_P03
35
GPIO_P16
69
GPIO_P15
WP
78 R488 NC
PWM2/GPIO_P24
79
GPIO_P27/PWM1
20
GPIO_P16
21
PWM1/GPIO_P25
22
GPIO_P17/SAR0
KEY1
23 R418 100 1/16W
GPIO_P00/SAR1
24 R420 100 1/16W KEY2
GPIO_P01/SAR2
25 R411 100 1/16W POWER
GPIO_P02/SAR3
27 R422 4.7K 1/16W
GPIO_P06
28 R423 4.7K 1/16W
GPIO_P07
Volume
29
PWM0/GPIO_P26
30 AUDIO_MUTE
GPIO_P13
31 AUDIO_STBY
GPIO_P14
77 VCC3.3
DDCROM_SCL
76
DDCROM_SDA
R424 R425 R426
10K 1/16W
10K 1/16W 10K 1/16W
R427 100
R428 100 1/16W
R429 100 1/16W
FB407
600 OHM +12V
+12V 2
+5V
+5V 2,3
FB408 +5V
600 OHM
CN404
R484 R485
10K 1/16W 10K 1/16W
1 2
3 4
AUDIO_STBY
5 6
7 8 AUDIO_MUTE
9 10
OUT-L+ 11 12 OUT-R+
OUT-L- OUT-R-
C431 13 14
NC
CONN
Confidential - Do Not Cop
PA[0..7] 5
PA[8..13] 5
PA[14..19] 5
PB[0..5] 5
PB[6..11] 5
PB[12..23] 5
ESP 5
OSP 5
GPO[0..4] 5
R405
DDC_WP 3
22K 1/16W Q402
PMBS3904
C422 VCC3.3
R406 0.1uF
10K 1/16W R481 R482
NC NC
on_PANEL_12V 2
B Q405
DET_DVI 3
NC
DET_VGA 3
KEY A
R483
on_PANEL 2
NC C616
on_BACKLIGHT 2
NC
adj_BACKLIGHT 2
C425
0.1uF
U403
8 1
VCC A0
1/16W 7 2
WP A1
6 3
SCL A2
5 4
SDA GND
KEY2
AT24C16N-10SC-2.7
Option
KEY1
LED_G
LED_A
POWER
C426 C427 C428
0.1uF 0.1uF 0.1uF
CN403
KEY_B 1 2 KEY_A
LED_G 3 4 LED_A
KEY_AUTO KEY_MENU
5 6
KEY_RIGHT 7 8 KEY_LEFT
POWER 9 10
KEY_C
11 12
OUT-L+ 13 14 OUT-R+
OUT-L- 15 16 OUT-R-
CONN
GND
- 72 –
VA703b/VA703m
VCC1.8 FB401 VDDC
2 VCC1.8
600 OHM
2 VCC3.3
C403 +
4.7uF/16V
C404 C405 C406
0.1uF 0.1uF 0.1uF
VCC3.3 FB403
VDDP
2 VCC3.3
600 OHM
C408
+
10uF/16V
C409 C410 C411 C412 C413
0.1uF 0.1uF 0.1uF 0.1uF 0.1uF
VCC3.3 FB404 VDVI
2 VCC3.3 2 VCC3.3
600 OHM
C414 C415
0.1uF 0.1uF
VCC3.3 FB406 VMPLL
2 VCC3.3
600 OHM
C419 C420
0.1uF 0.1uF
+5V VCC3.3
+5V 2,3
VCC3.3
R408
R412 10K 1/16W
10K 1/16W R413 R414
10K 1/16W 120 1/16W
Q403
R417 20K 1/16W
Q401
C424 0.1uF
PMBS3906
LED_G
R421 0 1/16W
VCC3.3
R474 R475
3.9K 1/16W 3.9K 1/16W
R476 1K 1/16W
R478 1K 1/16W
R477 1K 1/16W
R479 1K
C429 D401 C430 D402
RLZ36B
0.1uF 0.1uF
RLZ36B
Title
TSUM16AK
Size Document Number
C
Date: Thursday, May 12, 2005
VCC3.3 FB402 AVDD
600 OHM
C407
0.1uF
VCC3.3 FB405 VPLL
600 OHM
C416
0.1uF
R409
120 1/16W
PMBS3906
LED_A
R419 0 1/16W
KEY_AUTO
KEY_RIGHT
KEY_A
R480 1.5K 1/16W KEY_B
KEY_MENU
KEY_LEFT
1/16W KEY_C
Rev
A
SCALER
Sheet 1 of 5