AOC LM2028 Service Manual page 20

+5V
L3
3,7 +5V
600 OHM
POWER FOR MCU
600 OHM
3
VCC
LM810M3-2.93V
DIO/MA730
1 2 RESET IC
GND RESET
ACTIVE HIGH /RESET
VMC U
U4
C52 2 RESET
(RESET)RESET
2 1 3 1
VCC GND
0.1uF/16V
ASM810MEUR-T
VMCU
C53
VMCU 0.1uF/16V
R71
U501
4.7K 1/16W
1 8
A0 VCC
2 7 WP
A1 WP
3 6 R76 100 1/16W
A2 SCL
4 5 R77 100 1/16W
GND SDA
24C16
VMCU
VMCU
R81
CN9
10K 1/16W
3 IR1 1
2
1
CONN + TC5 C54
IR
22uF/16V 0.1uF/16V
GND
‚ ñ SN[¶ u 5~ ô O î • D e™ N u(
600 OHM
VMCU
C49 22pF
VMCU
EA/VP
24.576MHz Y2
C50 + TC4 UCLK
NC(2.2uF/16V) 10uF/16V
C51 22pF
RESET
D25 R63
INT
5 INT
NC IR_DATA
8.2K 1/16W
VGA_CAB
3 VGA_CAB
DVI_CAB
3 DVI_CAB
HWRESET
5 HWRESET
ALE
5 ALE
ON_PANEL
7 ON_PANEL
ON_PBACK
7 ON_PBACK
WP_DDC_VGA
3 WP_DDC_VGA
VMCU
R73
R72
4.7K 1/16W 10K 1/16W
R75
WP WP_MCU
MSCL 100 1/16W
MSDA R78
NC
Debug port
Q3 +5V
CN10
PMBS3904
1
IR_DATA TXD
2
RXD
3
R82
4
10K 1/16W
NC
GPROBE
QQ:505966338
For Bank Select 920629:EDID Addition
Syntek 128kB
Protection
Issue
VMCU
VMCU
R307
4.7K 1/16W RN9
RP10K
C48
0.1uF/16V
U402
AD0
EA/VP P0.0
AD[0..3]
AD1
P0.1
AD2
X1 P0.2
AD3
P0.3
P0.4
WP_DDC_DVI
X2 P0.5
MSCL
P0.6
MSDA
P0.7
RESET
P2.0
R272 470 1/16W
P2.1
R273 470 1/16W
INT0/P3.2 P2.2
R274 470 1/16W
INT1/P3.3 P2.3
R275 470 1/16W
T0/P3.4 P2.4
R276 470 1/16W
T1/P3.5 P2.5
R277 470 1/16W
P2.6
WP_MCU
P1.0 P2.7
P1.1
P1.2 RD/P3.7
P1.3 WR/P3.6
P1.4 PSEN
P1.5 ALE/P
4.7K
P1.6 TXD/P3.1
4.7K
P1.7 RXD/P3.0
PWR_R
P4.2 P4.0
PWR_Y
P4.3/ISP P4.1
W78E65P-40
VMCU
R74
470 1/16W
4.7K 1/16W R70 R79
PWR_Y PWR_R
1 Q1
MMBT3906
Page 20 of 66
CN4
LED1
LED2
X4
OSD_S1(POWER)
OSD_S2(MENU)
OSD_S3(LEFT)
AD[0..3] 5
WP_DDC_DVI 3
LED1
OSD_S1(POWER)
OSD_S3(LEFT)
OSD_S5(AUTO)
OSD_S1(POWER)
OSD_S2(MENU)
VMCU
OSD_S3(LEFT)
OSD_S4(RIGHT)
OSD_S5(AUTO)
OSD_S6(SOURCE) 4.7K 1/16W R64
4.7K 1/16W R65
RD
RD 5
WR
WR 5
1/16W R66
VMCU
1/16W R67
R68 NC
VGA_SDA 3
R69 NC
VGA_SCL 3
RXD
RXD 3
TXD
TXD 3
Near the VGA Connector. OSD_S1(POWER)
OSD_S2(MENU)
(ISP & DDC-CI)
OSD_S3(LEFT)
OSD_S4(RIGHT)
VMCU OSD_S5(AUTO)
OSD_S6(SOURCE)
R80
470 1/16W
4.7K 1/16W
1 Q2
MMBT3906
920701:MCU ESD & Driver
Protection
Title 06. MCU
Size Document Number
Custom
Date: Friday , August 27, 2004
AOC LM2028
Ke yPad conne ctor
ら稸BL106-10-Key Pad
For AOC
GND
OSD_S6(SOURCE)
OSD_S5(AUTO)
OSD_S4(RIGHT)
CN5
LED2
1 2
OSD_S2(MENU)
3 4
5 6 OSD_S4(RIGHT)
OSD_S6(SOURCE)
7 8
9 10
CONN
For MST
Rev
A
Sheet 6 of 7