3000 NL  (250-4072)               Pinouts               Faxback Doc. # 1425

GND = Ground     NC = Not Connected     * = Active Low Signal

Printer (DB-25 Female):                 Floppy (34 pin header/card socket):

1   Strobe*       14  Auto Feed*        1   NC          2   RWC*
2   Data 0        15  Fault*            3   NC          4   NC
3   Data 1        16  Initialize*       5   +5V (+)     6   NC
4   Data 2        17  Select In*        7   +5V (+)     8   Index*
5   Data 3        18  GND               9   +5V (+)     10  Drive Select 0*
6   Data 4        19  GND               11  +5V (+)     12  Drive Select 1*
7   Data 5        20  GND               13  GND         14  NC
8   Data 6        21  GND               15  GND         16  Motor Enable*
9   Data 7        22  GND               17  GND         18  Direction*
10  Acknowledge*  23  GND               19  GND         20  Step*
11  Busy          24  GND               21  GND         22  Write Data*
12  Paper Out     25  GND               23  GND         24  Write Enable*
13  Select                              25  GND         26  Track 0*
                                        27  GND         28  Write Protect*
Keyboard (5 pin DIN):                   29  GND         30  Read Data*
                                        31  GND         32  Side Select*
1  Keyboard Clock                       33  GND         34  Disk Change*
2  Keyboard Data                        RWC = Reduced Write Current
3  NC                                   (+) +5V not available to 5 1/4" drive
4  GND                                                               
5  +5V          Battery (3 pin header):        Speaker (4 pin header):
                
                1  +Voltage  2  GND            1  Sound     2  NC 
                3  NC                          3  GND       4  +5V

Serial Port (DB-9 Male):           Power Connector (2):

1  Carrier Detect                  1  +12V (orange)
2  Receive Data                    2  GND (black)
3  Transmit Data                   3  GND (black)
4  Data Terminal Ready             4  +5V (red)
5  Signal Ground
6  Data Set Ready
7  Request to Send
8  Clear to Send
9  Ring Indicator