HP 4 Plus Manual

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12
3
4
5
6
7
8
9
11
10
Figure 3-3 HP LaserJet 4/4M PCL Self Test Printout 
Configuration 3-25 
						

							Item
Figure  3-4 Explanation
1 Standard menu selections:   Lists selections in the order in which they
appear in the control panel display.
2 Optional 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.
3 MIO 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.
4 MIO 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.
5 Formatter Number:   Shows the printer’s unique formatter number.
6 RAM size:   Shows total installed printer memory
7 PCL Memory Information:   Shows the total amount of installed memory.
Also indicates the amount of available memory for PCL applications.
8 Page Count:   Shows number of pages the printer has printed. 
9 Firmware Datecode:   Eight-digit date (YYYYMMDD) and version number
of formatter firmware.
10 Control Panel options status:  Shows status of control panel Lock and
Password functions.
11 Other installed options:   Lists optional typeface cartridges, paper trays,
personalities, and other installed options.
12 Resolution 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.
13 I/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.
14 Print Pattern:   Illustrates print density and quality.
Table 3-11Self Test Printout Items - HP LaserJet 4 Plus/4M
Plus
3-26 Configuration 
						

							Figure 3-4 HP LaserJet 4 Plus/4M Plus PCL Self TestPrintout
Configuration 3-27 
						

							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.
Note If 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 
						

							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 \b5 ENGINE \fES\f only prints from
the PC tray (Tray 2).
Figure 3-5 Test Print Button Location
Configuration 3-29 
						

							Pressing the Test Print button will initiate a \b5 ENGINE \fES\f.
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 
						

							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
Note This 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 
						

							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
Note These 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 
						

							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 RA\fE=9600* .
Configuration 3-33 
						

							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  D\fR/DSR  through the Serial Menu ’s  PACING  item if the
computer requires hardware flow control (most personal
computers do). Through the Serial Menu ’s  D\fR POLARI\fY  item,
the DTR polarity can be set to High or Low. The default is  D\fR
POLARI\fY=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  ROBUS\f XON  item, Robust Xon can be set to
ON  (the default) or  OFF. Note that the ROBUS\f XON  item only
appears under the Serial Menu if XON/XOFF  was selected.
3-34 Configuration