If you do not see the expected output printed, the most likely cause is some type of hardware malfunction. The following troubleshooting procedures may help you to isolate the problem.
For serial printers:
See serial(HW) for a description of the pin connections if the printer is configured as Data Terminal Equipment (DTE). This manual page also describes the equivalent 9-pin connections.
%serial 0x03F8-0x03FF 04 - unit=0 type=Standard nports=1If
unit=0is displayed, the serial port is considered to be COM1. If the unit is 1, the port is considered to be COM2.
nports=denotes how many ports the driver recognized on the adapter. If you connect your serial printer to the first port on COM1, the associated device name will be tty1a. The second device on COM1 is tty1b, and so on. Devices on COM2 are named tty2a, tty2b, etc.
Intelligent serial adapters may display different bootup messages specific to their drivers; they may also use a different scheme for device names. The message displayed in this case may look similar to this:
%ONBOARD 0x0230-0x023F 34 0 unit=0 mem=0x000D0000 nport=16Be sure to read the documentation for the adapter and its drivers before attempting to install serial devices such as printers.
parallel 0x378-0x37A 07 - unit=0
unit=0refers to /dev/lp0,
unit=1refers to /dev/lp1, and so on.
If the card is recognized, an entry will be printed that has similar information to the entry above. The interrupt vector is listed in column 3 (or with ``vec='' for the hwconfig display); make certain that it does not conflict with other hardware.
You can now set up and customize the printer spooling software as described in ``Adding local printers'' and ``Configuring Hewlett-Packard network printers and print services''.