User Guide

8081
8081
N/B Maintenance
N/B Maintenance
109
8.4 External Monitor No Display
There is no display or picture abnormal on CRT monitor, but it is OK for LCD.
16,17
L3,L12
120Z/100M
Q5
2N7002
G
S
D
Q3
2N7002
G
S
D
R11
2.2K
R12
2.2K
+3V +5V
CRT_DDDA
CRT_HSYNC
CRT_ VSYNC
CRT_ DDCK
CRT_ R
CRT_ G
CRT_B
L4 120Z/100M
L5 120Z/100M
L6 120Z/100M
CP1
22P*4
J501
P15
External VGA Connector
9
12
13
14
15
1
2
3
5
6
7 8
4
3
2 1
CP3
22P*4
+5V
DDC2B
F501
mircoSMDC110
D502
D1FS4
L7 120Z/100M
L8 120Z/100M
L9 120Z/100M
Q4
2N7002
G
S
D
Q2
2N7002
G
S
D
+3V
L10 120Z/100M
L505
120Z/100M
VGA_DDC2B
R1
75
4
3 2
1
5
6 7
8
XX
R2
75
R3
75
U502
Memory
Controller
Hub
Montara-GM
P5
CRT_IN#
R4
1K
5
VGA_DDDA
VGA_HSYNC
VGA_ VSYNC
VGA_ DDCK
VGA_ RED
VGA_ GREEN
VGA_BLUE
4
3 2
1
5
6 7
8
XX
CP2
22P*4
From U9 ICH4-M