Crt Display Unit - NEC Advanced Personal Computer System Reference Manual

Controller PCB
3-20
CONTROLLER PCB
BRIGHTNESS CONTROL
GDC
PIN ASSIGNMENT
CN4
.,.
Z
U
/
1, 3, 5, 7, 9, 10, 11 GROUND
4,6,8
NOT USED
12 HORIZONTAL DRIVE
13 VIDEO (RED)
14, 15 GROUND
16 VIDEO (GREEN)
17
GROUND
18 VERTICAL DRIVE
19 VIDEO (BLUE)
20 GROUND
Figure 3-10 Color-CRT Display Interface
COLOR
CRT
DISPLAY
UNIT
INTERNAL
POWER
SUPPLY
1, 3, 5, 7, 9, 10, 11
4,6,8
12
COLOR
13
CRT
14,15
DISPLAY
UNIT
16
17
18
19
20
Another internal cable, the power supply cable, carries 115 Vac power from the
system power supply to the internal power supply oftn:? CRT Display. This internal
power unit provides the CRT Display with +12 Vdc.