HP 510 - Manual (Page 203)

Cable specification
The connector on the printer is a 36-pin female connector. Most existing parallel cables support IEEE-1284
compatible communication, but for use with this printer, the cable must meet the specifications in the following
table:
Parallel ( IEEE-1284 compatible/ Centronics ) Interface
Pin Wire/Signal Name Source
1 Strobe computer
2 … 9 D0 … D7 (data lines) both
10 Ack printer
11 Busy printer
12 PError printer
13 Select (SelectOut) printer
14 AutoFd computer
16 GND
19 … 30 GND
31 Init computer
32 Fault printer
36 SelectIn computer