MiTAC 8575A Service Manual page 137

8.4 External Monitor No Display
There is no display or picture abnormal on CRT monitor, but it is OK for LCD.
REFCLK0
P
From U508 Clock Gen.
R566
100 CRT_DDDA
P
R546
7
CRT_HSYNC
33
R547
CRT_VSYNC
33
R548
CRT_DDCK
100
U4
CRT_RED
CRT_GREEN
IGUI
Host/Memory
CRT_BLUE
Controller
C600
VVBWN 0.1µ
SiS650
C593
0.1µ
VCOMP
DACAVDD1,2
C583
0.1µ
DACAVSS1,2
VRSET
8575 A N/B Maintenance
8575 A N/B Maintenance
+3VS
+3VS
11
R552 R558
2.2K 2.2K
S
G
2N7002
S
D
G
Q501
2N7002
S
D
Q506
2N7002
L503 120Z/100M
L502 120Z/100M
L501 120Z/100M
+1.8VS
L514
120Z/100M
C584 C561
1µ 10µ
JL509
R545
130
P
15
To U14 SiS961
FA501
120OHM/100MHZ
G
S
D
G Q505
2N7002
D
Q502
RP502 CP501
75*4 22P*4
+3VS
J2
R2
R1
1K
1K
CRT_IN#
5
C1
P
10
1000P
12
13
14
15
1
2
3
6,7,8,10
CP502
JL1
22P*4
JL501
136