HP LaserJet 4250n User Manual

							Checking memory installation
After installing the DIMM or CompactFlash card, make sure that the installation was
successful.
To verify that DIMMs or CompactFlash cards are installed
correctly
1. Check that Ready appears on the printer control panel display when the printer power is
turned on. If an error message appears, a DIMM or CompactFlash card might have been
incorrectly installed. See 
Interpreting control-panel messages .
2. Print a new configuration page. (See 
Configuration page .)
3. Check the memory section on the configuration  page and compare it to the configuration
page that was printed before the memory installation. If the amount of memory has not
increased, the DIMM or CompactFlash card might  not be installed correctly, or the DIMM
or CompactFlash card might be defective. Repeat the installation procedure. If
necessary, install a different DIMM or CompactFlash card.
NOTE
If you installed a printer language (personality), check the Installed Personalities and
Options section on the configuration page. This  area should list the new printer language.
ENWW Checking memory installation  249
 
						

							Saving resources (permanent resources)
Utilities or jobs that you download to the printer sometimes include resources (for example,
fonts, macros, or patterns). Resources that are internally marked as permanent remain in the
printer memory until you turn the printer power off.
Use the following guidelines if you use the page description language (PDL) ability to mark
resources as permanent. For technical details, see an appropriate PDL reference for PCL or
PS.
● Mark resources as permanent only when it  is absolutely necessary that they remain in
memory while the printer power is turned on.
● Send permanent resources to the printer only at the beginning of a print job and not
while the printer is printing.
NOTE
Over-using permanent resources or downloading them while the printer is printing might
affect printer performance or the ability to print complex pages.
250 Appendix D Printer memory and expansion ENWW
 
						

							Installing EIO cards or mass storage devices
Follow this procedure to install an EIO card or mass storage device (optional hard disk).
To install EIO cards or mass storage devices
1. Turn the printer power off.
2. Remove the two screws and cover plate from the EIO  1 or EIO 2 slot on the back of the
printer.
NOTE
Do not discard the screws or the cover plate. Save  them for future use if you remove the EIO
card.
3. Install the EIO card or mass storage device  in the EIO slot and tighten the screws.
4. Turn the printer power on and print a configuration page to verify that the new EIO
device is recognized. (See 
Configuration page .)
To remove an installed EIO card or mass storage device
(optional hard disk)
1.
Turn the printer power off. 
2. Remove the two screws from the EIO card  or mass storage device, and then remove the
EIO card or mass storage device from the EIO slot.
3. Place the cover plate from the EIO 1 or EIO  2 slot onto the back of the printer. Insert and
tighten the two screws.
4. Turn the printer power on.
ENWW Installing EIO cards or mass storage devices 251
 
						

							252Appendix D Printer memory and expansion ENWW
 
						

							E
Printer commands
Most programs do not require you to enter printer commands. See your computer and
software documentation to find the method for entering printer commands, if needed.
PCL 6 and PCL 5ePCL 6 and PCL 5e printer commands tell the
printer which tasks to perform or which fonts to
use. This section provides a quick reference for
users who are already familiar with PCL 6 and
PCL 5e command structure.
HP-GL/2The printer has the ability to print vector graphics
using the HP-GL/2 graphics language. Printing in
the HP-GL/2 language requires that the printer
leave PCL 5e language and enter HP-GL/2
mode, which can be done by sending the printer
PCL 5e code. Some programs switch languages
through their drivers.
PJLHPs Printer Job Language (PJL) provides
control above PCL 5e and other printer
languages. The four major functions provided by
PJL are: printer language switching, job
separation, printer configuration, and status
readback from the printer. PJL commands can
be used to change printer default settings.
NOTEThe table at the end of this section contains commonly used PCL 5e commands. (See
Common PCL 6 and PCL 5 printer commands.) For a complete listing and explanation of
how to use PCL 5e, HP-GL/2, and PJL commands, see the  HP PCL/PJL Reference Set,
which is available on CD-ROM (HP part number 5961-0975).
ENWW 253
 
						

							Understanding PCL 6 and PCL 5e printer command syntax 
Before using printer commands, compare these characters:
Lowercase l:lUppercase O:O
Number one:1Number 0:0
Many printer commands use the lowercase letter l (l) and the number one (1), or the
uppercase letter O (O) and the number zero  (0). These characters might not appear on your
screen as shown here. You must use the exact character and case specified for PCL 6 or
PCL 5e printer commands.
The figure below explains the elements of  a typical printer command (in this instance, a
command for page orientation).
51234
1 Escape character (begins the escape sequence)
2 Parameterized character
3 Group character
4 Value field (contains both alpha and numeric characters)
5 Termination character (uppercase)
Combining escape sequences
Escape sequences can be combined into one escape sequence string. Follow these three
important rules when combining code:
1. The first two characters after the E
c character are the parameterized and group
characters. These characters must be the same in all of the commands that are to be
combined.
2. When combining escape sequences, change the uppercase termination character in each individual escape sequence to lowercase.
3. The final character of the combined escape sequence must be uppercase.
The following is an example of an escape sequence  string that would be sent to the printer
to select legal paper, landscape orientation, and eight lines per inch:
E
c&l3AEc&l1OEc&l8D
The following escape sequence sends the same printer commands by combining them into a
shorter sequence:
E
c&l3a1o8D
254 Appendix E Printer commands  ENWW
 
						

							Using escape characters
Printer commands always begin with the escape character (Ec).
The following table shows how the escape character can be inserted in various MS-DOS
programs.
DOS programEntryWhat appears
Lotus 1-2-3 and SymphonyType  \027
Microsoft Word for MS-DOSHold down  Alt and type  027 on
the numeric keypad
WordPerfect for MS-DOSType  
MS-DOS EditHold down  Ctrl+P , and press
Esc
MS-DOS EdlinHold down  Ctrl+V , and press  [^[
dBase?? CHR(27)+command?? CHR(27)+ 
Selecting PCL 6 and PCL 5 fonts
The printer font list provides PCL 6 and PCL 5 printer commands for selecting fonts. See PS
or PCL font list for information about how to print the list. A sample section is shown in the
following illustration.
One variable box is available for specifying symbol sets and one for spe\
cifying point size.
These variables must be filled in, or the printer  will use defaults. For example, if you want a
symbol set that contains line-draw characters, select the 10U (PC-8) or 12U (PC-850)
symbol set. Other common symbol set codes are listed in the section 
Common PCL 6 and
PCL 5 printer commands .
12
1 Symbol set
2 Point size
NOTEFonts are either fixed or proportional in spacing. The printer contains both fixed fonts
(Courier, Letter Gothic, and Lineprinter) and proportional fonts (CG Times, Arial, Times New
Roman, and others). Fixed-spaced fonts are generally used in programs such as
spreadsheets and databases, where it is important for columns to line up vertically.
Proportional-spaced fonts are generally used in text and word-processing programs.
ENWW Understanding PCL 6 and PCL 5e printer command syntax  255
 
						

							Common PCL 6 and PCL 5 printer commands 
Job-control commands
FunctionCommandOptions (#)
ResetEcEnot available
Number of copiesEc&l#X1 to 999
2-sided/1-sided printingEc&l#S0 = Simplex (1-sided) printing
1 = Duplex (2-sided) with long
edge binding
2 = Duplex (2-sided) with short
edge binding
Page-control commands
FunctionCommandOptions (#)
Paper sourceEc&l#H0 = Prints or ejects current page
1 = Tray 2
2 = Manual feed, paper
3 = Manual feed, envelope
4 = Tray 1
5 = Tray 3
6 = Optional envelop feeder
7 = Auto select
8 = Tray 4
20 to 69 = external trays
Paper sizeEc&l#A1 = Executive
2 = Letter
3 = Legal
25 = A5
26 = A4
45 = JIS B5
80 = Monarch envelope
81 = Commercial 10 envelope
90 = DL ISO envelope
91 = C5 ISO envelope
100 = B5 ISO envelope/B5 ISO
101 = Custom
256Appendix E Printer commands  ENWW
 
						

							FunctionCommandOptions (#)
Paper typeEc&n#5WdBond = Bond
6WdPlain = Plain
6WdColor = Color
7WdLabels = Labels
9WdRecycled = Recycled
11WdLetterhead = Letterhead
10WdCardstock = Cardstock
11WdPrepunched =
Prepunched
11WdPreprinted = Preprinted
13WdTransparency =
Transparency
#WdCustompapertype =
Custom
1
OrientationEc&l#O0 = Portrait
1 = Landscape
2 = Reverse portrait
3 = Reverse landscape
Top marginEc&l#E# = Number of lines
Text length (bottom margin)Ec&l#F# = Number of lines from top
margin
Left marginEc&a#L# = Column number
Right marginEc&a#M# = Column number from left
margin
Horizontal motion indexEc&k#H1/120-inch increments
(compresses print horizontally)
Vertical motion indexEc&l#C1/48-inch increments
(compresses print vertically)
Line spacingEc&l#D# = Lines per inch (1, 2, 3, 4, 5,
6, 12, 16, 24, 48)
Perforation skipEc&l#L0 = Disable (turn off)
1 = Enable (turn on)
1 For custom paper, replace Custompapertype with the name of the paper, and replace the
# with the number of characters in the name, plus 1.
Cursor Positioning
FunctionCommandOptions (#)
Vertical position (rows)Ec&a#R# = Row number
Page-control commands (continued)
ENWW Understanding PCL 6 and PCL 5e printer command syntax  257
 
						

							FunctionCommandOptions (#)
Vertical position (dots)Ec*p#Y# = Dot number (300 dots = 1
inch)
Vertical position (decipoints)Ec&a#V# = Decipoint number (720
decipoints = 1 inch)
Horizontal position (columns)Ec&a#C# = Column number
Horizontal position (dots)Ec*p#X# = Dot number (300 dots = 1
inch)
Horizontal position (decipoints)Ec&a#H# = Decipoint number (720
decipoints = 1 inch)
Programming hints
FunctionCommandOptions (#)
End of line wrapEc&s#C0 = Enable (turn off)
1 = Disable (turn on)
Display functions onEcYnot available
Display functions offEcZnot available
Language selection
FunctionCommandOptions (#)
Enter PCL 6 or PCL 5 modeEc%#A0 = Use previous PCL 5 cursor
position
1 = Use current HP-GL/2 pen
position
Enter HP-GL/2 modeEc%#B0 = Use previous HP-GL/2 pen
position
1 = Use current PCL 5 cursor
position
Cursor Positioning (continued)
258 Appendix E Printer commands  ENWW