- First International Computer Laptop User Manual

Pin Assignments
24 RSDIOR# Secondary disk IO read O
25 RSDIOW# Secondary disk IO write O
27 RSIORDY Secondary disk IO channel ready I
29 IRQ15 Secondary disk interrupt I
50 NC NC
49 NC NC
37 CDROMLED# CDROM access indicator O
2 CD_R CDROM sound right signal O
4 GND Ground I
1 CD_L CDROM sound left signal O
3 CD_RGND Left Ground I
39,41,38,40,42 +5Vs +5V power supply I
23,43,44,45,46,48 Gnd Ground O
47 CSEL SELECT MASTER OR SLAVE I
B.7 DC-IN Jack Pin Assignment
The pin assignment of the DC-IN connector is as follows:
No Signal Description Type
1 ADAPV+ Adapter input voltage I
2 Gnd Ground O
B.8 LCD Connector Pin Assignment
The pin assignment of the LCD connector is as follows:
NO. Signal Description Type
22 INVENA
Flat panel backlight signal
control the LCD backlight.
O
2 LCDID0 LCD type bit0 I
4 LCDID1 LCD type bit1 I
6 LCDID2 LCD type bit2 I
8 LCDID3 LCD type bit3
20 BRIGHTNESS LCD brightness adjust voltage O
23 TXOUTU0- O
21 TXOUTU0+ O
17 TXOUTU1- O
15 TXOUTU1+ O
11 TXOUTU2- O
9 TXOUTU2+ O
5 TXCLK- O
3 TXCLK+ O
16 MAIL LED
10 LED GREEN
12 LED AMBER
14 LED CHG
46,48,50 +3V
24,26,28,30,32 +5V
1,7,13,19,25,31,37,43,49,34,36,38,
40,42,44
GND
18 NC
FIC A550 Service Manual B-5