Service Manual
Page 69
... on the printer control panel for the High Speed Parallel I/O is set on the printer is transferred to 50 feet from the computer, use LaserJet Explorer, the Windows Printing System, and other software applications and drivers. Protocol on... the computer is parallel, remember to use an RS-422A serial configuration (not available on the printer is set by newer computers. The default protocol settings are described below. Printer I/O Configuration Parallel Menu The default setting for serial printing. Since the default-printer I/O setting on the LaserJet 4 Plus...
... on the printer control panel for the High Speed Parallel I/O is set on the printer is transferred to 50 feet from the computer, use LaserJet Explorer, the Windows Printing System, and other software applications and drivers. Protocol on... the computer is parallel, remember to use an RS-422A serial configuration (not available on the printer is set by newer computers. The default protocol settings are described below. Printer I/O Configuration Parallel Menu The default setting for serial printing. Since the default-printer I/O setting on the LaserJet 4 Plus...