AOC Norcent LT3725, Service Manual

Page: 45 / 86

37’’ LCD TV Color Monitor Norcent LT3725
45
R917
100 1/10W
VOL+ 4
+5VSB
R921 330 1/10W
RGB_VSYNC 11,12
RGB_HSYNC
R
4F
3
10K
1/
10W
RGB_VSYNC
C917
0.1uF
U905
P87LPC764BD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
P0.0
P1.7
P1.6
RST/P1.5
VSS
X1/P2.1
X2/P2.0
INT1/P1.4
SDA/P1.3
SCL/P1.2
P1.1
P1.0/TXD
P0.7
P0.6
VDD
P0.5
P0.4
P0.3
P0.2
P0.1
CH- 4
C912
18pF
I2C1CLK 6,9
C942
0.1uF
C494
0.01uF
CH-
DPMS_HS
PWR-ON
R960 330 1/10W
LED-B
+3V3SB
KEY6
R925
3.3K 1/10W
R950
47K 1/10W
PWR-ON
C961
0.22uF
U407
EM6353BX2SP3B-2.9+
1
2
3
GND
RESET(RESET)
VDD
LED-B
R949
NC/ 10K
R919 NC/ 0
PWR-ON
C900
0.22uF
R
4F
4
10K
1/
10W
SW401
SW
2
1 3
4
5
+5VSB
VOL- 4
LED-2
KEY2
PDC_SCL
Q906
2SC2412KR
5V
LED-1
R
4F
0
10K
1/
10W
5V
X1_P
KEY6
R908
3.3K 1/10W
R956
0 1/10W
C
4H
6
0.
1uF
C
4J
0
0.
1uF
RELAY-SW 18
Q901
2SC2412KR
R4J7 NC/0 1/16W
FB910
NC /300 OHM
1
2
FB912 220 OHM 1 2
D12V
C
4J
1
0.
1uF
IRR 6
C918
0.1uF
KEY2
DPMS_VS
SEL
CN902
NC/ 33G8009 5
1
2
3
4
5
R918 330 1/10W
C
4H
9
0.
1uF
RESETN 4,6,8
DPMS_HS
Q903
2SC2412KR
C4
H4
0.
1
uF
VCC3_3
ISP
R4K0
0 1/10W
R916
100 1/10W
KEY2
+5VSB
KEY2
FB911 220 OHM
1 2
PANEL-ON
FB917 300 OHM
I2C1DATA 6,9
KEY6
Q907
2SC2412KR
Q908
AO4403
1
2
3
4
8
7
6
5
S1
S1
S1
G1
D1
D1
D1
D1
Q905
2SC2412KR
MISC & Connectors
T1961-F-X-X-1-061011
+5VSB
MENU 4
KEY6
D5V
PWR-ON
FB401 600OHM
1 2
+5VSB
TV_VIDEO
KEY3
R958 NC
C
4H
3
0.
1uF
+3.3V
CH+
RC5-IR
Reset
Switch
PWR_SW
KEY6
KEY-IR
RC5-IR
RXD_B
MENU
R
4F
1
10K
1/
10W
+3V3SB
LED-A
PDC_SCL
RGB_VSYNC
D5V
LED-A
IRR
X901
12MHz
1
2
RESET
Z
D
404
N
C
/M
LL5232
B
5.
6V
1
2
R4A5 0 1/10W
R922
330 1/10W
CN419
CONN
1
2
3
4
5
6
7
8
9
10
11
12
13
R957
0 1/10W
X2_P
KEY3
5V
RELAY-SW
CH+
+3V3SB
+ C941
10uF/16V
R920 0 1/10W
R
4F
6
10K
1/
10W
JTAG_RSTN 6
R955
47K 1/10W
F
Page 15- Standby MCU and Reset
B
15 19 Thursday , October 12, 2006
Title
Size Document Number Rev
Date: Sheet of
R939
10K 1/10W
VCC3_3
R900
22K 1/10W
R959
NC
CH-
PWR_SW 3
12V_PANEL
PWR_SW
RESETN
VOL-
KEY-IR
PDC_SDA
DPMS_VS
R
4E
9
10K
1/
10W
R909
1K Ω 1/10W
RXD_B
ISP
TV_VIDEO 4
KEY3
KEY-IR
PDC_SDA
R952
0 1/10W
PWR_SW
R953
10K 1/10W
RESET
C957
0.1uF
KEY-IR
RXD_B
R4A3
1K 1/10W
+3V3SB
JTAG_RSTN
C913
18pF
SEL 3
NEC-IR
SEL
R924
3.3K 1/10W
+5VSB
C4
H8
0.
1
uF
RESET
LED-2
PANEL-ON
R
4F
5
10K
1/
10W
C
4H
5
0.
1uF
TXD_B
ISP
U910
AP1117E33LA
1
2 3
VS
S
VOUT VIN
+5VSB
X2_P
C
4J
2
0.
1uF
Front Panel Control Connector
PANEL-ON1 3
PANEL-ON1
U905-1
NC/P89LPC930FDH
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
P2.0
P2.1
KBIO/CMP2/P0.0
P1.7
P1.6
RST/P1.5
VSS
XTAL1/P3.1
CLKOUT/XTAL2/P3.0
INT1/P1.4
SDA/INT0/P1.3
SCL/T0/P1.2
MOSI/P2.2
MISO/P2.3
P2.4/SS
P2.5/SPICLK
P1.1/RXD
P1.0/TXD
P0.7/T1/KBI7
P0.6/CMP1/KBI6
VDD
P0.5/CMPREF/KBI5
P0.4/CIN1A/KBI4
P0.3/CIN1B/KBI3
P0.2/CIN2A/KBI2
P0.1/CIN2B/KBI1
P2.6
P2.7
R
4F
2
10K
1/
10W
VOL+
C4
H7
0.
1
uF
KEY3
TXD_B
FB914
300 OHM
1
2
U417
74HC4066DQ
1
2
3
4
5
6
7 8
9
10
11
12
13
14
1Y
1Z
2Z
2Y
2E
3E
GND 3Y
3Z
4Z
4Y
4E
1E
Vcc
FB913 220 OHM 1 2
Reset
Circuit
RGB_HSYNC 11,12
NEC-IR
LED-1
CH+ 4
TXD_B
PANEL-ON
LED-2
X1_P