HP LaserJet 4 Service Manual - Page 48

Table 3-8 Serial Menu Items Item SERIAL PACING BAUD RATE ROBUST XON Options RS-232* RS-422 (HP LJ 4 only) DTR/DSR* XON/XOFF 9600* 300 to 57600 ON* OFF DTR POLARITY HI* LO *indicates factory default. Explanation Use the RS-422 when a longer cable is needed. Use if the computer requires hardware flow control. Use if the computer requires software flow control. Tells how fast information will be transferred from the computer to the printer. Appears when pacing is set to XON/XOFF. Printer sends XON when printer is put on line or when sufficient buffer space is available. Printer sends one XON when it can accept more data or when it is put on line. Pin 20 is high. Pin 20 is low. Table 3-9 Test Menu Items Item Explanation SELF TEST With SELF TEST displayed, press [ENTER] to run a self test. CONT SELF TEST Prints continuous self test pages until [ON LINE] or [SHIFT] + [CONTINUE] are pressed. PCL TYPE LIST Prints a list of typefaces and bitmapped fonts in your printer. PCL DEMO PAGE Prints a page that illustrates the printer features. *indicates factory default. 3-12 Configuration