49
R485
100 1/10W
R
4
8
9
1
0
K
1
/1
0
W
DDC_DAT 4
Q402
PMBS3906
U404
MAX810STR
1
2
3
G
N
D
RST
VCC
R419
22 1/10W
VCPU
onPANEL_5V/3.3V
3
HDCP_RST
4
C452
0.001uF
HDCP_SDA
C451
0.001uF
POWER
RIGHT
R
4
5
3
1
0
K
1
/1
6
W
SW404
SW
R469
NC
R418
100
1/16W
GND
X402
24MHz
AUDIO_MU
8
LEFT
HDCP_WP
LED_ORANGE
HDCP_SDA
C435
0.22uF
R432
470
1/16W
D422
TZMC5V6-GS08
VCPU
RXD
4
LED_GRN
D408
BAV99
3
1
2
R441
10K
1/16W
For HDCP
R430 470
1/16W
R458 10K
1/16W
VCPU
VCPU
U403
M24C16
1
2
3
4
5
6
7
8
NC
NC
NC
VSS SDA
SCL
WC
VCC
INT
5
R468 0
1/16W
R
4
5
4
1
0
K
1
/1
6
W
R437
4.7K
1/16W
R422
NC
HDCP_SCL
D407
BAV99
3
1
2
R459 10K
1/16W
AD3
5
LED_O
LED_B
DP1
DUAL LED
1
2
3
KEY _MENU
R425 10K
1/16W
SW402
SW
C440
0.001uF
ENTER
R486
100 1/10W
C432 22pF
R426
10K
1/16W
R462 10K
1/16W
TXD
4
DVI_DAT
4,5
VCPU
3
Q401
PMBS3906
Re s e t
Circuit
RIGHT
R424
NC
U402
MTV416GMV
35
21
20
10
14
15
16
17
43
42
41
40
39
38
37
36
24
25
26
27
28
29
30
31
19
18
32
33
13
11
12
23
34
2
2
4
4
2
3
4
5
6
7
8
9
1
EA/VP
X1
X2
RESET
INT0/P3.2
INT1/P3.3
T0/P3.4
T1/P3.5
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
RD/P3.7
WR/P3.6
PSEN
ALE/P
TXD/P3.1
RXD/P3.0
P4.3/ISP
P4.0
P4.1
G
N
D
V
C
C
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P4.2
RP402
10K
1/16W
1
2
3
4
8
7
6
5
D406
BAV99
3
1
2
WR
5
VCPU
RP401
10K
1/16W
1
2
3
4
8
7
6
5
R
4
8
8
4
.7
K
1
/1
0
W
C453
1UF 50V
R423 10K
1/16W
LED_B
R456 10K
1/16W
Q403
PMBS3904
AUDIO_SD
8
DVI_CLK
4,5
R
4
5
5
1
0
K
1
/1
6
W
ST_DET2
4
KEY _LEFT
+
C433
10uF/16V
G1773-J-AC-X-1-070309
J
MCU
B
7
8
Friday , March 09, 2007
Title
Size
Document Number
Rev
Date:
Sheet
of
C445
0.1uF
VCPU
POWER
Mute
C442
0.001uF
R434
120
1/16W
RIGHT
U405
CAT24WC08W SOIC-8
GND
VCC
SDA
SCL
A0
A1
A2
WP
C431
0.1uF
GND
D402
BAV99
3
1
2
AUTO
R435
470
1/16W
KEY _ONOFF
D405
BAV99
3
1
2
R484
100 1/10W
R409
10K
1/16W
onPOWER 3
VCPU
VCPU
Standby
C438
0.1uF
ALE
5
R417 100
1/16W
R460 10K
1/16W
LED_O
ENTER
R420
22 1/10W
C443
0.001uF
R440
22K
1/16W
SW401
SW
R433
120
1/16W
R
4
5
2
1
0
K
1
/1
6
W
R
4
8
7
4
.7
K
1
/1
0
W
KEY _AUTO
R464
10K
1/16W
R421
NC
SW403
SW
AD2
5
onBACKLITE
3
R490
NC
D404
BAV99
3
1
2
D403
BAV99
3
1
2
LEFT
AUTO
R436
470
1/16W
VCPU
ST_DET1
4
KEY _RIGHT
VCPU
R416 10K
1/16W
DDC_WP 4
SW405
SW
D401
TZMC5V6
1
2
R438
4.7K
1/16W
R414 100
1/16W
DDC_CLK 4
R411
10K
1/16W
AD1
5
C441
0.001uF
R463 10K
1/16W
R413 10K
1/16W
C434 22pF
C439
0.001uF
HDCP_WP
R431 470
1/16W
WP
R457 10K
1/16W
HWRESET
5
AD0
5
HDCP_SCL
R429
10K
1/16W
WP
C437
0.1uF
RD
5
R461 10K
1/16W
Summary of Contents for AL2251W
Page 1: ...1 Acer AL2251W Service Guide ...
Page 9: ...9 LCD Monitor General Specification ...
Page 10: ...10 ...
Page 11: ...11 LCD Panel Specification General Specifications ...
Page 12: ...12 Optical Specifications ...
Page 13: ...13 Supported Timing ...
Page 24: ...24 b The Description For Function Control LEDS ...
Page 25: ...25 ...
Page 31: ...31 Fig 7 6 Remove the screws to remove the frame of the panel Fig 8 9 Fig 8 Fig 9 ...
Page 32: ...32 Fig 10 7 Remove the screws to remove the base back cover Fig 11 12 Fig 11 Fig 12 ...
Page 34: ...34 10 Remove the screws to remove the main board Fig 15 16 Fig 15 Fig 16 ...
Page 41: ...41 Exploded Diagram Model AL2251W ...
