ViewSonic VLCDS23722-1W Service Manual page 23

OSD_B
OSD_G
OSD_R
R23 33
OSD_CLK
R24 33
OSD_HS
R25 100
OSD_VS
C41 C42 3V3_MCU
22P 220P
RP8
C43 R29
0.1u 4.7KRP
10K
MCU_VS_OUT
C121
NC
C46 22p
C47
1 2
X1 12MHZ
22p
R32 1M X1 7
X1
X2_12MHZ
X2_12MHZ 8
X2
PSC1
9
P4.5
PSC0
10
P4.4
ASIC_RESET_
11
P4.3
PLLH_SEL
12
P4.2
MCU_VS_IN
13
P4.1/VSYNC
MCU_HS_IN
14
P4.0/HSYNC
ISP_SCL
15
P3.0/Rxd/HSCL
16
ISP_SDA P3.1/Txd/HSDA
17
P3.2/INT0
RP13
4.7KRP
3V3_MCU
C56
NC
U7 100u/16V C49
MAX812 0.1u C50 C119
0.1UF NC
4 1
4 1
3 2
3 2
D4
R64
NC(1N4148)
R34 C119,D4 NC 90/12/20
0
R34
IF USE C50 IS 0 O_HM, MUST USE D4 AND C119,BUT R64 NC 90/12/20 NC
ViewSonic Corporation
THE NEW ADD CIRCUIT FORM AD9884 PIN124 TO U5 PIN41 AD9884 POWER DOWN
FBLK
R65
1K
R30 C98
C40
10K NC 0.1u
PD
L20
64RFIL-5232T8300A
N540
39
P5.6/DA2
38 GRNLED
P5.5/DA1
REDLED
37
P5.4/DA0
36
P5.3/AD3
U5 35
P5.2/AD2
34
P5.1/AD1
33
MTV230M
P5.0/AD0
32
P1.7
31
P1.6
3V3_MCU
30
P1.5
29
P1.4
N519
5V_ROM
5V
U8
1 8
A0 VDD
3V3_MCU R35 NC
2 7
A1 WP
R36 NC
3 6 R37 NC
A2 SCL
NC R38 NC
4 5
VSS SDA
C52
NC(24C16/DIP)
2 0
ADD JP3,JP4 SELECT 5V OR 3.3V_MCU 90/12/20
5V 3V3_MCU
PWR1
PWR2
R78 150-->390T 90/12/13
R78
390
RP7 GRNLED
1
4.7KRP
R63
Q1
9884_PD
REDLED 1 MMBT3904L
1K C124 Q2
MMBT3904L
1u
R31
1K
C45
3V3_MCU
1u
RP9 RP10
4.7KRP
4.7KRP
PLL1_PD
SW2(SELECT+)
SW2(SELECT+)
SW3(MENU-)
SW3(MENU-)
LED_RED
LED_GRN
SOFT_START
MCU_SCL1
MCU_SDA1
RP11
4.7KRP
RP12
4.7KRP
SOFT_START
VGA_CON
ROM_SCL
ROM_SDA
ASIC_SCL
ASIC_SDA
PWOUT
AUDIO
SOG_SEL
BL_ON_OFF
VE500-1
Confidential – Do Not Copy
LED_GRN
LED_RED
R66
330
R28
330
BL_BRI
L35 RFIL-5185T8121A 64RFIL-5185T8121A N201
L36 N202
L37 N203
L38 64RFIL-5185T8121A RFIL-5185T8121A N204
L39 N205
L40 N206
64RFIL-5185T8121A
C118 C122 C123
C115 C116 64RFIL-5185T8121A C117 0.1u 1000P 1000P
1000P 0.1u 0.1u
QPWB-5396T8---B
Title
MCU_MTV230_VIEWSONIC
Size Document Number
DPWBN5396T8---B
C
Date: Thursday, March 14, 2002 Sheet 2 of 5
J2
1
2
3
4
5
6
CON6
Rev
B