HP L1940T Service Manual page 25
Hp l1940t lcd monitor
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Also See for L1940T:
- Service manual (66 pages) ,
- User manual (58 pages) ,
- Overview (7 pages)
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FB302
112
120
+3.3V
ADC_VAA
120 OHM
C302
C303
C304
10uF/16V
0.1uF
0.1uF
FB303
15
82
+3.3V
+3.3VDD
120 OHM
C305
C306
C307
10uF/16V
0.1uF
0.1uF
FB301
99
108
+3.3V
DVI_AVCC
120 OHM
C308
C309
C310
NC
0.1uF
0.1uF
FB304
110
DVI_PVCC
120 OHM
C311
0.1uF
FB305
14
89
+1.8VDD
+1.8VCC
120 OHM
C312
C313
C314
10uF/16V
0.1uF
0.1uF
FB307
+3.3V
MCU_VDD
120 OHM
MCU_VDD
C318
0.1uF
R320
R321
R322
NC
4.7K
4.7K
U302
1
8
NC
VCC
2
7
24C16_WP
NC
WC
3
6
16CSCL
IICSCL
NC
SCL
4
5
R325
VSS SDA
100
16CSDA
IICSDA
M24C16-WBN6
R326
100
1/16W
8P-DIP TYPE
R328
w/ SOCKET
NC
MCU_VDD
C326
U303
0.1uF
M24C16-MN6T
1
8
A0
VCC
2
7
24C16_WP
A1
WP
3
6
16CSCL
A2
SCK
4
5
16CSDA
VSS
SI
MCU_VDD
CN303
CN304
R336
IICSCL
1
1
TX
IICSDA
2
2
RX
3
3
4
100
R338
1/16W
NC
NC
100
1/16W
TODEBUG
TO RS232
VSO
HSO
IICSCL
IICSDA
RSTN
IRQN
(2)
RX2+
(2)
RX2-
(2)
RX1+
DVI_AVCC
(2)
RX1-
103
RX0+
(2)
RX0+
104
RX0-
(2)
RX0-
105
AGND
106
RXC+
(2)
RXC+
107
RXC-
(2)
RXC-
108
AVCC
DVI_AVCC
109
R306
REXT
DVI_AVCC
390
110
PVCC
DVI_PVCC
111
PGND
112
ADC_VAA
ADC_VAA
113
BIN1+
114
BIN1-
115
SOGI1
116
GIN1+
117
GIN1-
118
RIN1+
119
RIN1-
120
ADC_VAA
121
ADC_GNDA
122
BIN0+
(2)
BIN
123
BIN0-
(2)
GNDB
124
SOGI0
(2)
SOG
125
GIN0+
(2)
GIN
126
GIN0-
(2)
GNDG
127
RIN0+
(2)
RIN
128
RIN0-
(2)
GNDR
(2)
HSIN
R318
100
(2)
VSIN
R319
100
1/16W
'05-12-01
Change from port1 to port0
C320
+3.3VDD
0.1uF
C323
10uF/16V
C324
470uF/16V
FB306
1K OHM
+1.8VCC
+3.3VDD
+1.8VDD
U401
NT68663MEFG-128
+1.8VDD
+3.3VDD
C319
R323
100
1/16W
22pF
R324
1M
Y301
12MHz
C321
C322
R327
3.3pF
3.3pF
4.7K
BRIGHTNESS (4)
R333
KEY1
(4)
100
1/16W
C325
100pF
39K
20060504增加R339为39K，以improved白屏issue
+5V
R334 NC
+3.3V
10K
R335
47K
GND
25
TXO0-
TXO0+
TXO0-
TXO1-
TXO0+
TXO1+
TXO1-
TXO2-
TXO1+
TXO2+
TXO2-
TXO2+
TXOC-
TXOC-
TXOC+
TXOC+
TXO3-
TXO3-
TXO3+
TXO3+
TXE0-
TXE0-
TXE0+
TXE0+
TXE1-
TXE1-
TXE1+
TXE1+
TXE2-
TXE2+
TXE2-
TXEC-
TXE2+
TXEC+
TXEC-
TXE3-
TXEC+
TXE3+
TXE3-
TXE3+
PANEL_VCC
R302
64
0
TCLK2M
63
TCLK2P
62
T7M
61
T7P
60
R304
IICSDA
P35/T1
100
1/16W
59
CN301
R305
IICSCL
P34/T0
100
1/16W
58
TXO0-
1
PB3/ADC3/INTE1
TXO1-
3
57
IRQN
TXO2-
5
PB2/ADC2/INTE0
TXOC-
7
56
TX
MCU_VDD
TXO3-
9
P31/TXD
TXE0-
11
55
HSO
TXE1-
13
PD6
TXE2-
15
54
RX
P30/RXD
R307
TXEC-
17
100
1/16W
TXE3-
19
53
PANEL_VCC
GND
21
RSTB
23
52
PA7/PWM9*
51
PA6/PWM8*
R308
K_AUTO
(4)
100
1/16W
50
R309
PA5/PWM7*
DDC_W_A
(2)
100
1/16W
49
R310
PA4/PWM6*
DDC_W_D
(2)
100
1/16W
48
PA3/PWM5
C301
47
NC
PA2/PWM4
46
PA1/PWM3
45
R313
PA0/PWM2
DC_SW
(4)
100
1/16W
44
VSO
PD0
C315
NC
43
MCU_VCC
MCU_VDD
42
PC0*
41
PC1*
C316
40
MCU_VDD
C317
10uF/16V
PC2
0.1uF
39
PC3/PWM0
R315
R316
4.7K
4.7K
BL_CONTROL (4)
CUT_A
(4)
24C16_WP
PANEL_IDX
(4)
LED_R
(4)
LED_G
(4)
VGA_CABLE
(2)
Ref Des
PANEL_PWR
(4)
1412
DVI_CABLE
(2)
2408
2422
DVI-SDA
(2)
7402
DVI-SCL
(2)
2307
ISPSDA
(2)
2313
ISPSCL
(2)
3304
R329
R330
R331
R332
3311
MCU_VDD
Title
HP L1940
Size
Document Number
Custom
NT68663 (MCU+SCALER A)
Date:
Friday, May 05, 2006
HP L1940T
CN302
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
29
30
R303
0
2
TXO0+
4
TXO1+
6
TXO2+
8
TXOC+
10
TXO3+
12
TXE0+
14
TXE1+
16
TXE2+
18
TXEC+
20
TXE3+
22
GND
PANEL_VCC
24
CONN
Reserved
242202505572
60952
222224119876
10u
222224119876
10u
319801070490
TL431ACD
223878615649
100n
223878615649
10u
212211805669
10K
232270260103
10K
Rev
B
Sheet
3
of
5
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