HP Laserjet 4 Manual
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2 1 2 3 4 5 6 7 8 9 11 10 Figure 3-3 HP LaserJet 4/4M PCL Self Test Printout Configuration 3-25
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Item Figure 3-4Explanation 1Standard menu selections: Lists selections in the order in which they appear in the control panel display. 2Optional menus: Shows optional menu selections, such as the PostScript Menu, and menu items, in the order in which they appear in the control panel display. Optional menus automatically appear in the control panel display when options are added to the printer. 3MIO Menu: When an optional Modular I/O is added, the MIO Menu appears following the Serial Menu in the self test and control panel display. 4MIO information: Reserved for MIO and network statistics. For some installed MIO options, this block of information can be as long as 20 lines and three columns. 5Formatter Number: Shows the printer’s unique formatter number. 6RAM size: Shows total installed printer memory 7PCL Memory Information: Shows the total amount of installed memory. Also indicates the amount of available memory for PCL applications. 8Page Count: Shows number of pages the printer has printed. 9Firmware Datecode: Eight-digit date (YYYYMMDD) and version number of formatter firmware. 10Control Panel options status: Shows status of control panel Lock and Password functions. 11Other installed options: Lists optional typeface cartridges, paper trays, personalities, and other installed options. 12Resolution Enhancement: When resolution is set to 600-dpi, the REt block appears here. The REt block illustrates current resolution enhancement. To optimize REt, adjust REt and density settings to minimize the appearance of vertical lines through the block. 13I/O Buffering and Resource Saving: Information about the current configuration appears here. If the printer does not have enough memory installed to enable I/O Buffering or Resource Saving, the amount of additional memory needed appears here. 14Print Pattern: Illustrates print density and quality. Table 3-11Self Test Printout Items - HP LaserJet 4 Plus/4M Plus 3-26 Configuration
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Figure 3-4 HP LaserJet 4 Plus/4M Plus PCL Self Test Printout Configuration 3-27
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Changing the Control Panel Display Language The default control panel display language is set for English. Supported languages are: English, French, German, Italian, Spanish, Finnish, Danish, Dutch, Swedish, Norwegian, and Portuguese. Follow these instructions to change the display language. 1Switch OFF the printer. 2Press and hold [Enter] (or Select on the LJ 5) while switching the printer ON until CONFIG LANGUAGE appears in the display. 3After the power-on self test, LANGUAGE=ENGLISH appears. Press [+] until the desired language appears in the display. 4Press [Enter] to save your choice. An asterisk (*)appears next to the language to indicate it is now the default. 5Press [On Line]. The On Line indicator is lit, and display messages are now in the language you selected. NoteIf the display language is changed, replace or install the Control Panel Overlay to match the selected language. See the index to Chapter 6 for instructions on changing or installing the Control Panel Overlay. NoteFailure to explicitly select a language after powering on the printer while holding down the ENTER or SELECT key will cause the printer to prompt for a specific language every time it is powered on. 3-28 Configuration
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Test Print Button The Test Print button access hole is located on the side of the printer. Press the Test Print button using a tool similar to a paper clip (see Figure 3-5). The 15 ENGINE TEST only prints from the PC tray (Tray 2). Figure 3-5 Test Print Button Location Configuration 3-29
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Pressing the Test Print button will initiate a 15 ENGINE TEST. This is an engine test only. The Format PCA is bypassed while printing this test, although a formatter problem can interfere with this test. A page of vertical lines is printed if the print engine is operating correctly (see Figure 3-6). Figure 3-6 Test Print Pattern 3-30 Configuration
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System Configuration MS-DOS System Configuration To communicate properly with the printer, the MS-DOS environment requires the addition or modification of MODE commands in the AUTOEXEC.BAT file. Add or modify the MODE command(s), depending on the interface configuration, as follows: Parallel DOS Commands Most IBM PC and AT compatible computers default to a parallel printer port. To ensure that information is sent to your parallel printer port, type the following MS-DOS command at your MS-DOS prompt or include it in your AUTOEXEC.BAT file: MODE LPT1:,,P For MS-DOS version 4.0 and above, enter: MODE LPT1:,,B NoteThis example assumes that you are using parallel printer port LPT1. If you are using LPT2 or LPT3, replace LPT1 in the example with the printer port that you are using. Since the MODE command is an external MS-DOS command (a program named MODE.COM is run when the MODE command is invoked), the program file must be contained in the root directory, or in a directory specified in a preceding PATH command in the AUTOEXEC.BAT file. NoteAfter changing the AUTOEXEC.BAT file, reboot the computer to initiate the changes. Configuration 3-31
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Serial MS-DOS Commands Most IBM compatible computers default to a parallel printer port. To ensure that information is sent to your serial printer port, type the following MS-DOS commands at your MS-DOS prompt, or include them in your AUTOEXEC.BAT file. MODE COM1:9600,N,8,1,P MODE LPT1:=COM1 For MS-DOS version 4.0 or above, enter: MODE COM1:9600,N,8,1,B MODE LPT1:=COM1 NoteThese examples assume that you are using serial printer COM1. If you are using COM2 or COM3, replace COM1 with the the printer port that you are using. Since the MODE command is an external MS-DOS command (a program named MODE.COM is run when the MODE command is invoked), the program file must be contained in the root directory, or in a directory specified in a preceding PATH command in the AUTOEXEC.BAT file. NoteAfter changing the AUTOEXEC.BAT file, reboot the computer to initiate the changes. 3-32 Configuration
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Printer I/O Configuration Parallel Menu The default setting for the High Speed Parallel I/O is YES. If it is set to NO, the interface runs at a slower speed that is compatible with older computers. When the default is set to YES, the parallel interface runs at a higher rate supported by newer computers. Advanced Functions The Advanced Functions feature of the printer enables bi-directional communications between the printer and the host. The default setting is ON. This default setting (ON) must be active in order to use LaserJet Explorer, the Windows Printing System, and other software applications and drivers. Serial Configuration Use RS-232C serial configuration when the printer is located 11 to 50 feet from the computer. If you need to locate the printer between 51 and 2000 feet from the computer, use an RS-422A serial configuration (not available on the LaserJet 4 Plus or 5). Since the default-printer I/O setting on the printer is parallel, remember to change the settings on the printer control panel for serial printing. Serial Protocol When printing with a serial configuration, the same protocol must be set on both the printer and the computer. Protocol on the printer is set by changing the control panel. Protocol on the computer is set by using DOS commands. The default protocol settings are described below. BAUD Rate The BAUD-rate setting tells the printer how fast information is transferred to and from the computer. The default BAUD rate setting is: BAUD RATE=9600*. Configuration 3-33
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Pacing (Handshaking) Pacing (or “handshaking”) is a type of communication between the printer and the computer. This is an important item in the printer because it allows the printer to tell the computer when to send information. If the printer is unable to receive information, for example, when the print buffer is full or when the printer is out of paper, a signal is sent to the computer to stop sending information. When the printer is able to resume receiving information, it sends another signal to the computer to send more data. Pacing is set through the control panel’s Serial Menu. Two types of handshaking are supported by your printer: •Select DTR/DSR through the Serial Menu’s PACING item if the computer requires hardware flow control (most personal computers do). Through the Serial Menu’s DTR POLARITY item, the DTR polarity can be set to High or Low. The default is DTR POLARITY=HI •Select XON/XOFF through the Serial Menu’s PACING item if the computer requires software flow control (for example, if you are using a UNIX workstation). Note that status readback messages are not paced when XON/XOFF is selected. Through the Serial Menu’s ROBUST XON item, Robust Xon can be set to ON (the default) or OFF. Note that the ROBUST XON item only appears under the Serial Menu if XON/XOFF was selected. 3-34 Configuration