MiTAC 7521 PLUS/N - Manual (Page 112)

111
7521 7521 Plus / N N/B MAINTENANCE Plus / N N/B MAINTENANCE
8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY
There is no display or picture abnormal on LCD.
U24
SIS 630S
U2
LVDS
DS90C363MTD
R[2~7]_301
FA6,FA8,FA10
FA7,FA9,FA11 RP31,RP33,RP24
RP32,RP26,RP36
VBHSYNC
VBVSYNC
VBBLANK#
VGCLK
L537
L536
L534
L540
22
23
25
26
TXCLKOUT+
TXCLKOUT-
TXOUT0+
TXOUT0-
TXOUT1+
TXOUT1-
TXOUT2+
TXOUT2-
32
33
40
41
38
39
34
35
27 VBCLK
7
11
16
20
8
12
15
19
1 2 3
5 6 7 8
4
S
G
D
1
2
D
S
G
FPVCC
R5
+5V
+12V
R7
Q3
+3V
Q2
L4
ENABKL_VGA#
SW1
U14
H8
BLADJ 4 45
1
LID_OPEN#
24
+5V
L9
2
3
+5V
R149
Q14 Q15
Q4
+3V
R18 R150
J2
LCD COVER SW
R527
SH5
SH11
SH5
SH20
+3V
J1
SH21
ENABKL_VGA
LCD
SH5
G[2~7]_301
B[2~7]_301