HP 1055CMHP - Manual (Page 303)

Functional Overview
10-17 HP DesignJets 1050C and 1055CM Printers Service Manual
Interface Specifications
Below are the parallel interface specifications.
For specifications of the HP JetDirect Print Server (Network
Interface), see the JetDirect Print Server documentation supplied
with the Print Server Interface or consult your dealer.
The following cable is recommended for optimum performance and
electromagnetic compatibility:
NOTE There is a small serial port at the rear of the printer, this is there
for manufacturing purposes only and cannot be used to print.
Parallel (IEEE-1284 compatible/Centronics) Interface
The connector on the printer is 36-pin
female.
Most existing parallel cables support
IEEE-1284 compatible
communication, but for use with this
printer, the cable must meet the
specification in this table.
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
Recommended Cable for PCs and Unix Systems
Interface type (Computer) HP part number Cable length Connector type at
computer end of
cable
IEEE compatible/Centronics
Interface (All) C2951A 3.0 m 25-pin male