HP Laserjet 4 Manual

Setting the Cold Reset Default
A Cold Reset procedure returns most user-selectable Control
Panel Menu selections to their factory defaults, including Paper
Size and Tray 1 Size settings.  All 220/240 printers are set from
the factory to default to A4 paper size settings when the user
performs either a Cold Reset or Factory Default Reset procedure.
However, when a Formatter is replaced after leaving the factory
(due to a need for service), a Cold Reset or Factory Default Reset
will result in apaper size...

Skip Demo
If set to TRUE, will disable any test and demo pages containing
the HP logo.  This setting should only be used by OEMs not
wishing to give user-access to these pages.
Big Data
This item will allow a user to increase the amount of status
readback buffer if the item is set to ON.  The default for this item
is OFF.  The printer must be power-cycled after changing this
value in order for the new buffer size to take effect.
Diagnostics
Allows a diagnostic mode for firmware developers.  Should...

Programming a Flash SIMM
A flash SIMM may be programmed while installed in the printer.
To program a flash SIMM.
1Hold down the Menu> , Item< , Value+ , and Select keys while
powering on the printer.  
2The printer will display “PROGRAM SLOT 4”.  To change the slot
number, press Value+/-.
3Once the desired slot number is displayed, press Select.
4The printer will display “OK”, followed by “ERASING SIMM.”  If
the SIMM is correcly earased, the printer will display “START
DOWNLOAD.”  At this point, you may...

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, Turkish,
Polish, and Portuguese.  Follow these instructions to change the
display language.  
1Switch OFF the printer.
2Press and hold Select while switching the printer ON until
SELECT LANGUAGE appears in the display.
3After the power-on self test, LANG=ENGLISH appears.  Press
[Value+/-]...

NVRAM Init
NVRAM Init clears the NVRAM to its initial state.  This reset is
used when the NVRAM becomes full and the user would like to
add additional personalities.  It is possible to reconfigure the
NVRAM so the new personalities have higher priority and the
older personalities, while they can still be run with factory
defaults, run without NVRAM.  This is done by clearing the
NVRAM and then adding the new personalities before adding the
older personalities.
To perform a NVRAM init, hold down the JOB...

Understanding the PCL Self Test
Printout
Reference Explanation (Refer to Figure B-4)
1 Printer Information lists printer specific statistics.  
Formatter Number shows the unique number assigned to
the formatter board. 
Firmware Datecode is the eight-digit date (YYYYMMDD)
code of the Formatter ROM. 
Page Count shows the number of pages the printer has
printed.
2 Installed Personalities and Options lists printer languages
and all SIMM accessories that are installed.
3 Security lists whether the control...

Figure B-4 HP LaserJet 5 PCL Self Test Printout
LaserJet 5/5M/5N Printer  B-33 

Infrared Communication
The HP LaserJet 5, 5M, and 5N printers are equipped with an
Infrared Datalink Association (IrDA) compliant port. The IrDA
specification allows “wireless” transmission of print data between
a wide variety of hosts (primary) and peripheral (secondary)
devices. A primary device — such as a PC or laptop computer —
is capable of reading and writing data to another primary device
or writing to a secondary device, such as a printer. Secondary
devices are read-only; they cannot initiate...

System Requirements
•Hardware
•Both the primary and secondary devices must be equipped
with an IrDA-compliant IR component. Older,
non-IrDA-compliant devices may not be compatible with the
HP LaserJet 5/5M/5N printers.
•Software
•The primary device must be loaded during boot-up with
software provided by the manufacturer for infrared operation.
•The primary device must be properly configured with an
infrared COM port, IRQ level, and base address value.
•The infrared port must be installed and selected in...

To Print Using the Infrared Port
The C2929A Infrared Transceiver must be plugged into the
infrared (IR) port on your HP LaserJet 5, 5M, or 5N printer,
located at the rear of the printer (Figure B-6). This port is
compliant with the specifications determined by the Infrared
Data Association (IrDA). On top of the transceiver pod is a status
light that indicates when the port is activated. To use the IR port,
you need to use a portable device that also includes an
IrDA-compliant IR port and be within the...