D Printer Commands

Overview. D-1 Understanding PCL Printer Command Syntax. D-2 Combining Escape Sequences. D-3 Entering Escape Characters. D-3 Selecting PCL Fonts. D-4 Common PCL Printer Commands. D-5

E Regulatory Information

FCC Regulations. Environmental Product Stewardship. Protecting the Environment. Toner Material Safety Data Sheet. Declaration of Conformity. Safety Statements. Laser Safety Statement. Canadian DOC Regulations. VCCI Statement (Japan). Laser Statement for Finland. E-1 E-2 E-2 E-6 E-7 E-8 E-8 E-8 E-8 E-9

Glossary Index

Printer Basics

Overview

Congratulations on your purchase of an HP LaserJet 4000 series printer. If you have not done so, see the getting started guide provided with the printer for setup instructions. Now that the printer is set up and ready to use, take a few moments to get to know the printer. This chapter introduces the following:
Features and benefits of the printer. Important printer parts and locations. Accessories and supplies available for the printer. The layout and basic operation of the printers control panel. Helpful printer software for increased printing flexibility.
Chapter 1: Printer Basics
Printer Features and Benefits

Speed and Throughput

Instant-on fuser prints the first page in 12 seconds Prints letter-size paper 17 pages per minute (ppm) or A4-size
paper 16 ppm 100-MHz RISC processor enhances throughput

Resolution

FastRes 1200 for fast, high quality image printing ProRes 1200 for best print quality Up to 220 levels of gray for smooth, photo-like images New HP precision toner for clear, sharp output

Paper Handling

Handles up to 600 sheets of paper Prints a wide range of sizes and weights

Language and Fonts

HP PCL 6 and HPs PostScript Level 2 emulation 110 fonts for Microsoft Windows, plus HP FontSmart

Expandable design

500-sheet universal paper tray, 75-envelope power feeder, and
duplex printing accessory available Flash storage for forms, fonts, and signatures Memory can be expanded up to 100 MB Two EIO slots for connecting to networks HP JetSend enabled

Printer Information

Configurations
This printer is available in four configurations, as described below.

C4125A

HPM1120

Printing Supplies

HP LaserJet Paper

HPJ1124

Toner Cartridge (6,000 pages) Toner Cartridge (10,000 pages)

C4127A C4127X

Ordering Information (Continued) Item Dual In-line Memory Module (DIMM) EDO DIMMs Memory, Fonts, and Mass Storage Description or Use Boosts the ability of the printer to handle large print jobs (maximum 100 MB with HP brand DIMMs): 4 MB 8 MB 16 MB 4 MB 8 MB 16 MB 32 MB Permanent storage for fonts and forms: 2 MB 4 MB Font DIMM 8 MB Asian MROM: traditional Chinese simplified Chinese Permanent storage for fonts and forms. Also used for making multiple original prints. 2 Meter IEEE-1284 cable 3 Meter IEEE-1284 cable 9-9 pin serial cable (male/female) 9-25 pin serial cable (male/female) 25-9 pin adapter (male/female) For connecting to a Macintosh computer. For PhoneNET or LocalTalk connection. HP JetDirect print server multi-protocol EIO network cards: Ethernet RJ-45 only Ethernet RJ-45 and BNC, LocalTalk Token Ring RJ-45 and DB-9 C4286A C4287A C4286A C4287A C2985A C4135A C4136A C4137A C4140A C4141A C4142A C4143A Part Number

SDRAM DIMMs

Flash DIMM

Hard Disk

Parallel Cables Serial Cables Cable and Interface Accessories
C2950A C2951A C2932A C2933A C2809A 92215S 92215N
Serial Adapter Macintosh Computer Serial Cable Macintosh Network Cable Kit Enhanced I/O Cards

J3110A J3111A J3112A

Ordering Information (Continued) Item Description or Use A guide to using paper and other print media with HP LaserJet printers. A guide to using printer commands with HP LaserJet printers. An additional copy of this users guide. An additional copy of the getting started guide. An additional copy of the getting started guide. An additional copy of the quick reference guide. Part Number 5010-6394
HP LaserJet Printer Family Paper Specification Guide PCL 5/PJL Technical Reference Documentation Package HP LaserJet 4000, 4000 T, 4000 N, and 4000 TN Printers Users Guide

Documentation

5021-0330
C4118-91060 (English) C4118-90972 (English) C4119-90901 (English) C4118-90926 (English)
HP LaserJet 4000 and 4000 N Printers Getting Started Guide HP LaserJet 4000 T and 4000 TN Printers Getting Started Guide HP LaserJet 4000, 4000 T, 4000 N, and 4000 TN Printers Quick Reference Guide

Printing Both Sides of Paper (Optional Duplexer)
The printer can automatically print on both sides of paper with an optional duplex printing accessory (duplexer). This is called duplexing.
See the documentation included with the duplexer for complete installation and setup instructions. Duplexing might require additional memory (page C-1). The duplexer supports sizes from B5 JIS (7.2 by 10 inches or 182 by 257 mm) to legal (8.5 by 14 inches or 216 by 356 mm).

Installed

Removed

Figure 7

Printer with the Optional Duplexer
Guidelines for Printing Both Sides of Paper

Caution

Do not print on both sides of labels, transparencies, envelopes, or paper heavier than 28 lb (105 g/m2). Damage to the printer and paper jamming might result. To avoid personal injury and damage to the printer, do not lift the printer with the duplexer installed. Before relocating the printer, separate the duplexer and optional trays from the printer.

WARNING!

You might need to configure the printer driver to recognize the
duplexer. (See the printer software help for details.) To print on both sides of paper, make the selection from the software or printer driver. (See the printer software help.) If the printer driver does not have this option, change the Duplex setting from the Paper Handling Menu in the printers control panel to &72.':10. Also in the Paper Handling Menu, set Binding to long edge or short edge. (For more information, see page 34.) Close the rear output bin to use the duplexer (page 24). Opening the rear output bin disables the duplexer.
Paper Orientation for Printing Both Sides of Paper
The duplexer prints the second side of paper first, so paper such as letterhead and preprinted paper needs to be oriented as shown in Figure 8.

Figure 8

For Tray 1, load the first side facing down and the top toward you. For all other trays, load the first side facing up and the top toward the printer.
Layout Options for Printing Both Sides of Paper
The four print orientation options are shown below. These options can be selected from the printer driver or from the printers control panel (set $+0&+0)from the Paper Handling Menu and 14+'06#6+10from the Printing Menu).

1. Long-edge portrait 2. Long-edge landscape
3. Short-edge portrait 4. Short-edge landscape

Figure 9

Layout Options for Printing Both Sides of Paper This is the default printer setting, and the most common layout used, with every printed image oriented right side up. Facing pages are read from top to bottom on the left page, then from top to bottom on the right page. This layout is often used in accounting, data processing, and spreadsheet applications. Every other printed image is oriented upside-down. Facing pages are read continuously from top to bottom. This layout is often used with clipboards. Every other printed image is oriented upside-down. Facing pages are read continuously from top to bottom. Each printed image is oriented right side up. Facing pages are read from top to bottom on the left page, then from top to bottom on the right page.

1. Long-edge portrait

2. Long-edge landscape

3. Short-edge portrait

4. Short-edge landscape

Printing Special Paper

Special paper includes letterhead, prepunched (including 3-hole punched), envelopes, labels, transparencies, and custom-size paper.
Printing Letterhead, Prepunched, or Preprinted Paper
When printing letterhead, prepunched, or preprinted paper, it is important to load the trays with the correct orientation.
Paper orientation is different when you print with an optional duplexer (page 33). Printing in portrait or landscape mode is usually selected from the software application or printer driver. If the option is not available, change the Orientation setting from the Printing Menu in the printers control panel (page B-9).

Paper Orientation

For Tray 1, load paper with the side-to-be-printed facing up, and the top, short edge toward the printer.

Figure 10

Paper Orientation for Tray 1
For all other trays, load paper with the side-to-be-printed facing down, and the top edge toward you.

Figure 11

Paper Orientation for All Other Trays

Printing Envelopes

With the optional envelope feeder, the printer will automatically feed up to 75 envelopes. To order an envelope feeder, see page 6. To print with the envelope feeder, see page 39. Many types of envelopes can be printed from Tray 1. (Up to 10 can be stacked in the tray.) Printing performance depends on the construction of the envelope. Always test a few sample envelopes before purchasing a large quantity.

Figure 14

Printing Cards, Custom-Size and Heavy Paper
Custom-size paper can be printed from Tray 1 or the optional 500-sheet tray. For paper specifications, see page A-2.
Choose A5 and B5 (ISO) as custom sizes in the printer driver for Tray 2 and Tray 3 (HP LaserJet 4000 T/4000 TN printers) and the optional 500-sheet tray. Settings for these sizes are marked in the tray, but custom settings must be selected in the software and from the printers control panel.
Tray Tray 1 Optional 500-Sheet Tray
Minimum Size 3 by 5 inches (76 by 127 mm) 5.8 by 8.2 inches (148 by 210 mm)
Maximum Size 8.5 by 14 inches (216 by 356 mm) 8.5 by 14 inches (216 by 356 mm)
The maximum paper weight is 53 lb (199 g/m2) from Tray 1 and 28 lb (105 g/m2) from the 500-sheet tray.
To prevent curl and other problems, heavy paper and very small custom-size paper should be printed from Tray 1 to the rear output bin. Open the rear output bin to use it (page 25). The printers control panel can be set for one custom size at a time. Do not load more than one size of custom paper into the printer.
Guidelines for Printing Custom-Size Paper
Do not attempt to print on paper smaller than 3 inches (76 mm)
wide or 5 inches (127 mm) long. Set page margins at least.17 inch (4.23 mm) away from the edges.
Setting Custom Paper Sizes
When custom paper is loaded, size settings need to be selected from the software application (the preferred method), the printer driver, or from the printers control panel.

X (front edge)

Y (side edge)

Figure 15

Printing Custom-Size Paper
If the settings are not available from the software, set the custom paper size from the control panel: 1 From the Printing Menu set%10(+)74'%7561/2#2'4;'5. 2 From the Printing Menu, select inches or millimeters as the unit of measurement. 3 From the Printing Menu, set the X dimension (the front edge of the paper) as shown in Figure 15. X can be 3 to 8.5 inches (76 to 216 mm). 4 Set the Y dimension (the side edge of the paper) as shown in Figure 15. Y can be 5 to 14 inches (127 to 356 mm). 5 If custom paper is loaded into Tray 1 and 64#;/1&'%#55'66', then set 64#;5+<'%7561/from the Paper Handling Menu in the printers control panel. See Customizing Tray 1 Operation on page 50. If custom paper is loaded in the optional 500-sheet tray, be sure the paper size dial is set to Custom (page 29). 6 In the software, select Custom as the paper size. For example, if the custom paper is 8 by 10 inches (203 by 254 mm), set X=8 inches and Y=10 inches (X=203 millimeters and Y=254 millimeters). The control panel must be set if the PCL 5e driver is used, or custom paper is loaded long-edge first (X is longer than Y).

/'/14;5'66+0)5 %*#0)'&
/'/14;5*146#)' ,1$%.'#4'&
The printer did not have enough free memory to print the entire job. The remainder of the job will not print and will be cleared from memory. Press [Go] to continue. Change the Resource Saving setting from the printers control panel or add more memory to the printer.
/'/14;5*146#)' 2#)'5+/2.+(+'&
The printer had to compress the job in order to fit it in available memory. Some data loss might have occurred. Press [Go] to continue. You might want to add more memory to the printer.
1((.+0' 2'4(14/24+06'4 /#+06'0#0%'
Press [Go] to place the printer online.
To ensure optimum print quality, the printer prompts you to have routine maintenance performed every 150,000 pages. Contact an HP-authorized service or support provider to perform routine printer maintenance. (See the HP Support pages at the front of this users guide.)
4#/&+5-&'8+%' (#+.74' 4#/&+5-(+.' 12'4#6+10(#+.'&
The RAM disk had a critical failure and can no longer be used. Turn the printer off, and then turn the printer on to clear the message.
Printer Messages (Continued) Message Explanation or Recommended Action Delete files and then try again, or turn the printer off, and then turn the printer on to delete all files on the device. (Delete files using HP JetAdmin, HP FontSmart, or another software utility. See the software help for more information.) If the message persists, increase the size of the RAM disk. Change the RAM disk size from the Configuration Menu in the printers control panel.
4#/&+5-(+.' 5;56'/+5(7.
4#/&+5-+5 94+6'2416'%6'& 64#;Z'/26;
The RAM disk is protected, and no new files can be written to it. Disable the write protection through HP JetAdmin. Load the empty tray (Z) to clear the message. If you do not load the specified tray, the printer will continue printing from the next available tray, and the message will continue to display. Load the requested paper into the specified tray (Z). Ensure that the trays are correctly adjusted for size. The tray type settings (and size for Tray 1) must be set from the printers control panel. If you are trying to print from the optional 500-sheet tray, be sure to set the paper size dial. If you are trying to print A4 or letter size paper, and this message appears, make sure the default paper size is set correctly from the Printing Menu in the printers control panel. Press [Go] to print from the next available tray. Press [-Value+] to scroll through the available types and sizes. Press [Select] to accept the alternate type or size.

64#;Z.1#& =6;2'?=5+<'?
705722146'& 5+<' An external paper handling device detected an unsupported paper size. The printer will go offline until the condition is corrected. +064#;=;;? 75'=6;2'? =5+<'?+056'#&!
If the requested paper size or type is not available, the printer asks if it should use another paper size or type instead. Press [-Value+] to scroll through the available types and sizes. Press [Select] to accept the alternate type or size.
9#+6 (14 24+06'4 The RAM disk setting has been changed from the printers control panel. This change will not take effect until the printer reinitializes. 614'+0+6+#.+<'
Printer Messages (Continued) Message Explanation or Recommended Action The envelope feeder you are trying to install will not work for this printer.
9410)'08'.12' (''&'4+056#.'& Z2#2'4,#/ =.1%#6+10?
Remove jammed paper from the specified location. Open and close the top cover to clear the message. If the message persists after all jams have been cleared, a sensor might be stuck or broken. Contact an HP-authorized service or support provider. (See the HP Support pages at the front of this users guide.)

+057((+%+'06 /'/14;

24'55)161 %106+07' 2#)'611 %1/2.':
The printer received more data than can fit in its available memory. You might have tried to transfer too many macros, soft fonts, or complex graphics. Press [Go] to print the transferred data (some data might be lost), then simplify the print job or install additional memory.

24'55)161 %106+07'

The data (dense text, rules, raster or vector graphics) sent to the printer was too complex. Press [Go] to print the transferred data. (Some data might be lost.) To print the job without losing data, from the Configuration Menu in the printer control panel, set 2#)'2416'%610, print the job, and then return 2#)'2416'%6#761. Do not leave 2#)' 2416'%610; it might degrade performance. If this message appears often, simplify the print job. Too much data was sent to the EIO card in the specified slot (Z). An improper communications protocol may be in use. Press [Go] to clear the message. (Data will be lost.) Check the host configuration. If this message persists, contact an HP-authorized service or support provider. (See the HP Support pages at the front of this users guide.)

'+1Z $7(('418'4(.19

Printer Messages (Continued) Message Explanation or Recommended Action Too much data was sent to the parallel port. Check for a loose cable connection and be sure to use a high-quality cable. (Some non-HP parallel cables might be missing pin connections, or might otherwise not conform to the IEEE-1284 specification.) This error can occur if the driver you are using is not IEEE-1284 compliant. For best results, use an HP driver that came with the printer. Press [Go] to clear the error message. (Data will be lost.) If this message persists, contact an HP-authorized service or support provider. (See the HP Support pages at the front of this users guide.)

installed in the printer (page C-2). Remove and retain any optional accessories installed in the printer (such as the duplexer or hard disk). Remove and retain the toner cartridge.
To prevent damage to the toner cartridge, store the cartridge in its original packing material, or store it so that it is not exposed to light.
Use the original shipping container and packing material, if
possible. (Shipping damage as a result of inadequate packing is the customers responsibility.) If you have already disposed of the printers packing material, contact a local mailing service for information on repacking the printer. If possible, include print samples and 50-100 sheets of paper or any other media that is not printing correctly. Include a completed copy of the Service Information Form (page 101). HP recommends insuring the equipment for shipment.
Limited Warranty for Toner Cartridge Life
The warranty below applies to the toner cartridge that came with this printer. This warranty supersedes all previous warranties (7/19/96). HP toner cartridges are warranted to be free from defects in materials and workmanship until the HP toner is depleted. The warranty covers any defects or malfunctions in a new Hewlett-Packard toner cartridge.
How long does the coverage last? How do I know when the HP toner is running out? What will HP do?
The coverage lasts until the HP toner is depleted, at which time the warranty expires. The 610'4.19 message on the printers control panel display provides the first indication that toner is low. (Toner will likely run out in the next 100-300 sheets of paper.) HP will, at HPs option, either replace products which prove to be defective or refund the purchase price. If possible, please attach a print-out sample illustrating what the defective cartridge is printing. The warranty does not cover cartridges which have been refilled, are emptied, are abused, are misused, or are tampered with in any way. In the event the cartridge proves to be defective, complete the Service Information Form (page 101) and attach a print sample illustrating the defect. Return the form and cartridge to the place of purchase, where the cartridge will be replaced. This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state, province to province, or country to country. This limited warranty is the sole warranty on the HP toner cartridge and supersedes any other warranty relating to this product.

'%101/1&'1((

610'4&'05+6;

%4'#6'%.'#0+0) 2#)'

No value to select.

241%'55%.'#0+0) 2#)'

Printing Menu
Printing Menu Item Values Explanation Set the default number of copies by selecting any number from 1 to 999. Press [-Value+] once to change the setting by increments of 1, or hold down [-Value+] to scroll by increments of 10. Note It is best to set the number of copies from the printer driver or software application. (Driver and software settings override control panel settings.) Set the default image size for paper and envelopes. (The item name will change from paper to envelope as you scroll through the available sizes.) Note The defaults indicated here are for 110V printers. The default paper size for 220V printers is #. The default envelope size for 220V printers is &.

%12+'5

2#2'4.'66'4

(110V printers) and

For supported paper sizes, see page A-3.

'08'.12' %1/

(110V printers)

%10(+)74'%7561/ 2#2'401

01: The custom paper menu items are not accessible. ;'5: The custom paper menu items appear (see below).
This item appears only when %10(+)74' %7561/2#2'4;'5. Select the unit of measurement for the custom paper size.

70+61(/'#574' +0%*'5

(110V printers) or

+0%*'5 /+.+/'6'45

/+.+/'6'45

(220V printers)

Printing Menu (Continued) Item Values Explanation This item appears only when %10(+)74' %7561/2#2'4;'5. Select the dimension to be fed into the printer (short edge).

:&+/'05+10 +0%*'5

to +0%*'5

to /+.+/'6'45

;&+/'05+10 +0%*'5
This item appears only when %10(+)74' %7561/2#2'4;'5. Select the other dimension (long edge).

14+'06#6+10 21464#+6

21464#+6.#0&5%#2'
Determine the default orientation of print on the page. Note It is best to set the page orientation from the printer driver or software application. (Driver and software settings override control panel settings.) Sets vertical spacing from 5 to 128 lines for default paper size. Press [-Value+] once to change the setting by increments of 1, or hold down [-Value+] to scroll by increments of 10.

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 table on page D-7.
Fonts 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 applications 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 applications.
Common PCL Printer Commands
Function Job Control Commands Reset Number of Copies 2-sided/1-sided printing Command Options (#) n/a 1 to = Simplex (1-sided) printing 1 = Duplex (2-sided) with long edge binding 2 = Duplex (2-sided) with short edge binding

?E ?&l#X ?&l#S

Paper Source

?&l#H

0 = prints or ejects current page 1 = Tray = manual feed, paper 3 = manual feed, envelope 4 = Tray = Tray = Envelope Feeder 7 = auto select 8 = Tray 4 20-69 = external trays 1 = Executive 2 = Letter 3 = Legal 25 = A= A= B5-JIS 80 = Monarch 81 = Commercial = DL 91 = International C= B= Custom 5WdBond = Bond 6WdPlain = Plain 6WdColor = Color 7WdLabels = Labels 9WdRecycled = Recycled 11WdLetterhead = Letterhead 10WdCardstock = Cardstock 11WdPrepunched = Prepunched 11WdPreprinted = Preprinted 13WdTransparency = Transparency #WdCustompapertype = Custom= Portrait 1 = Landscape 2 = Reverse Portrait 3 = Reverse Landscape

Paper size

?&l#A

Page Control Commands

Paper Type

?&n#

Orientation

?&l#O

Common PCL Printer Commands (Continued)
Function Top Margin Page Control Commands (Continued) Text Length (bottom margin) Left Margin Right Margin Horizontal Motion Index Vertical Motion Index Line Spacing Perforation Skip Command Options (#) # = number of lines # = number of lines from top margin # = column number # = column number from left margin 1/120-inch increments (compresses print horizontally) 1/48-inch increments (compresses print vertically) # = lines per inch (1, 2, 3, 4, 5, 6, 12, 16, 24, 48) 0 = disable 1 = enable # = row number # = dot number (300 dots = 1 inch) # = decipoint number (720 decipoints = 1 inch) # = column number # = dot number (300 dots = 1 inch) # = decipoint number (720 decipoints = 1 inch) 0 = Enable 1 = Disable n/a n/a

The diagram below represents how HP LaserJet toner cartridges are recycled:

Printer and Parts

U.S. Only: HPs Hardware Recycling Organization will accept the printer and other HP products when you have no further use for them. HP disposes of these products in an environmentally-sound manner. Many of the functional parts are recovered, tested, and reused as fully warrantied service parts. Used parts are not placed into new product manufacturing. The remainder of the product parts which are not functional are recycled if possible. For this service, call (1) (800) 535-7933. Europe Only: Design for recycling has been incorporated into the printer and its accessories. The number of materials has been kept to a minimum while ensuring proper functionality and high product reliability. Dissimilar materials have been designed to separate easily. Fasteners and other connections are easy to locate, access, and remove with common tools. High priority parts have been designed to be accessed quickly for efficient disassembly and repair. Plastic parts have been primarily designed in two colors to enhance recycling options. A few small parts are colored specifically to highlight customer access points.
HP disposes of returned products in an environmentally sound manner. Many of the functional parts are recovered, tested, and reused as fully-warrantied service parts. Used parts are not placed into new product manufacturing. The remainder of the product parts are recycled, if possible. For product take-back information, contact your local HP Sales and Service Office (page 103).
Europe Only: The printer is suited for the use of recycled papers when the paper meets the guidelines outlined in the HP LaserJet Printer Family Paper Specifications Guide. The printer is suited for the use of recycled paper according to DIN 19 309. All Other Countries: The printer is suited for the use of recycled papers when the paper meets the guidelines outlined in the HP LaserJet Printer Family Paper Specifications Guide.
To ensure printer longevity, HP provides the following: Extended Warranty HP SupportPack covers the printer and all HP-supplied internal components. It is a three-year warranty from the date of purchase. HP SupportPack must be purchased by the customer within 30 days of product purchase. Information on HP SupportPack is available by calling your local HP FIRST number. (See the HP Support pages at the front of this users guide.) Spare parts and consumable supplies for this product will be made available for at least five years after production has stopped.

Spare Parts and Consumables Availability
Toner Material Safety Data Sheet
The Toner Material Safety Data Sheet can be obtained by calling your local HP FIRST number. (See the HP Support pages at the front of this users guide.)
Declaration of Conformity
according to ISO/IEC Guide 22 and EN45014 Manufacturer's Name: Manufacturer's Address: declares, that the product Product Name: Model Numbers: Product Options:

Safety: EMC:

Hewlett-Packard Company 11311 Chinden Boulevard Boise, Idaho 83714-1021, USA HP LaserJet 4000, 4000 T, 4000 N, 4000 TN
C4118A, C4119A, C4120A, C4121A
conforms to the following Product Specifications:
IEC 950:1991+A1+A2+A3 / EN 60950:1992+A1+A2+A3 IEC 825-1:1993 / EN 60825-1:1994 Class 1 (Laser/LED) 1 CISPR 22:1993+A1 / EN 55022:1994 Class B ) EN 50082-1:1992 IEC 801-2:1991 / prEN 55024-2:1992 IEC 801-3:1984 / prEN 55024-3:1991 IEC 801-4:1988 / prEN 55024-4:1992 IEC 1000-3-2:1995 / EN61000-3-2:1995 IEC 1000-3-3:1994 / EN61000-3.3:1 FCC Title 47 CFR, Part 15 Class B ) / ICES-003, Issue 2 / VCCI-2 )
1 AS / NZS 3548:1992 / CISPR 22:1993 Class B )
4 kV CD, 8 kV AD 3 V/m 0.5 kV Signal Lines 1.0 kV Power Lines
Supplementary Information:
The product herewith complies with the requirements of the following Directives and carries the CE-marking accordingly: the EMC directive 89/336/EEC the Low Voltage Directive 73/23/EEC
1. The product was tested in a typical configuration with Hewlett-Packard Personal Computer Systems. 2. This Device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

January 15, 1997

For Compliance Information ONLY, contact:
Australia Contact: European Contact: Product Regulations Manager, Hewlett-Packard Australia Ltd., 31-41 Joseph Street, Blackburn, Victoria 3130, Australia Your Local Hewlett-Packard Sales and Service Office or Hewlett-Packard Gmbh, Department HQ-TRE / Standards Europe, Herrenberger Strae 130, D-71034 Bblingen (FAX: +49-7031-14-3143) Product Regulations Manager, Hewlett-Packard Company, PO Box 15 Mail Stop 160, Boise, ID 83707-0015 (Phone: 208-396-6000)

USA Contact:

Safety Statements

Laser Safety Statement

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration has implemented regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products marketed in the United States. The printer is certified as a Class 1 laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. Since radiation emitted inside the printer is completely confined within protective housings and external covers, the laser beam cannot escape during any phase of normal user operation.

I/O Buffer message C-6 I/O Buffer setting B-16 I/O Buffer Size setting B-16 I/O buffer, changing memory buffer size C-6 I/O cards installing C-7 locating 4 ordering 7 I/O Menu B-16B-18 I/O Size message C-6 I/O Timeout setting B-16 incorrect fonts 87, 88, 91 index cards A-12 see also custom-size paper Information Menu B-2 information pages, for troubleshooting 9395 Input Device Condition message 74 Input Device Failure message 81 input tray areas clearing jams from envelope feeder 66
hard disk installing C-7 ordering 7 printing font list 96 hardware warranty 9798 heavy paper printing 25, 4547 problems with A-11 specifications A-11
clearing paper jams 65, troubleshooting 89 inserting envelope feeder 40 Install Tray message 74 installed personalities and options, displayed on configuration page 95 installing drivers 13 EIO cards C-7 fonts 17 HP FontSmart 17 HP JetAdmin 12 HP JetSend 18 mass storage devices C-7 printer memory C-2C-4 toner cartridges 56 Insufficient Memory message 77 interface accessories, ordering 7 interface connections, troubleshooting 86 internal fonts 96, B-9 Item key 10
printing multiple pages on one sheet 49 letterhead paper duplexing 33 orientation 3536 license for software 102 light paper, printing with 25 light printing setting toner density B-7 troubleshooting 83 lights control panel 9 turning off B-11 lines, troubleshooting 83 loading envelope feeder 41 envelopes in Tray paper trays 2630 Loading Program message 74 locating paper jams 64 locking control panel 19 locking out paper trays 52 loose toner, troubleshooting 83, A-6
Macintosh network cable kit, ordering 7 PPDs 13 printer drivers 13, 19 printing problems 9091 selecting alternate PPD 92 serial cable, ordering 7 software for 19 troubleshooting flowchart 9091 maintaining the printer 5561 Maintenance setting B-15 Manual Feed setting B-4 Manually Feed message 74 manually feeding paper 51 manuals, ordering 8 margins custom-size paper 46 envelopes 37, A-11 mass storage devices installing C-7 locating C-7 material safety data sheet E-6 maximum paper size custom-size paper 45 envelopes A-5, A-9 Tray 1 A-3 maximum paper sizes 500-sheet tray (optional) A-4 Trays 2 and 3 (4000 T/4000 TN) A-3 media, see paper memory allocated to languages C-5 changing I/O buffer size C-6 changing resource saving
Jam Recovery setting B-15 Japans VCCI statement E-8 JetAdmin, see HP JetAdmin JetSend, see HP JetSend Job Cancel key, see Cancel Job key JobMonitor, see HP JobMonitor

keys, control panel 10

For the complete PDF manual please visit www.LaserPros.com.
HP LaserJet 4000 and 4050 Series Printers Service Manual
HP LaserJet 4000 and 4050 Series Printers
Service Manual _____________
Copyright Hewlett-Packard Company 1999 All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. Publication number C4251-91003 First edition, April 1999
Warranty The information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with respect to this information. HEWLETT-PACKARD SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for any direct, indirect, incidental, consequential, or other damage alleged in connection with the furnishing or use of this information.
Trademark Credits PostScript is a trademark of Adobe Systems Incorporated which may be registered in certain jurisdictions. CompuServe is a U.S. trademark of CompuServe, Inc. Windows is a U.S. registered trademarks of Microsoft Corporation. TrueType is a U.S. trademark of Apple Computer, Inc. ENERGY STAR is a U.S. registered service mark of the U.S. EPA.
Hewlett-Packard Company 11311 Chinden Boulevard Boise, Idaho 83714 USA

Contents

1 Printer Description
Overview. 1-1 Printer Features. 1-2 Identification. 1-8 Model and Serial Numbers. 1-8 Site Requirements. 1-9 Space Requirements. 1-10 Environmental Requirements. 1-11 Paper Specifications. 1-12 Supported Types of Paper. 1-15 Guidelines for Using Paper. 1-16 Labels. 1-19 Transparencies. 1-19 Envelopes. 1-20 Card Stock and Heavy Paper. 1-23 Safety Information. 1-24 Laser Safety Statement. 1-24 Canadian DOC Regulations. 1-24 FCC Regulations. 1-25 Laser Statement for Finland. 1-26 Toner Safety. 1-27 Environmental Product Stewardship. 1-28

2 Service Approach

Overview. 2-1 Service Approach. 2-2 Parts and Supplies. 2-3 Ordering Information. 2-3 Helpful Documentation. 2-4 Phone Numbers for Ordering. 2-6 Exchange Program. 2-6 Consumables. 2-6 World Wide Web. 2-6 HP Service Parts Information Compact Disc. 2-6 HP Support Assistant Compact Disc. 2-7 HP FIRST. 2-7 Toner Cartridge Information. 2-9 Warranty Statement. 2-10

Contents-1

3 Printer Operation
Overview. 3-1 Using the Control Panel. 3-2 Control Panel Layout. 3-2 Control Panel Lights. 3-2 Control Panel Keys. 3-3 Settings and Defaults. 3-4 Control Panel Menus. 3-5 Quick Copy Jobs Menu. 3-6 Private/Stored Jobs Menu. 3-7 Information Menu. 3-8 Paper Handling Menu. 3-9 Print Quality Menu. 3-12 Printing Menu. 3-15 Configuration Menu. 3-20 I/O Menu. 3-26 EIO Menu (Networked Printers). 3-29 Resets Menu. 3-31 Service Mode. 3-32 Service Menu. 3-33 Setting the Page Count, Maintenance Count, and Serial Number. 3-33 Cold Reset Paper. 3-36 Diagnostics. 3-36 Clear Event Log. 3-36 Testing the Printer. 3-37 Resetting the Printer. 3-38 System Configuration. 3-39 MS-DOS System Configuration. 3-39 Parallel DOS Commands. 3-39 Serial MS-DOS Commands. 3-40 Printer I/O Configuration. 3-41 Parallel Menu. 3-41 Serial Configuration. 3-41

4 Printer Maintenance

Overview. 4-1 Cleaning the Printer and Accessories. 4-2 Cleaning Spilled Toner. 4-4 Preventative Maintenance. 4-5 Reset Maintenance Count. 4-5 Expected Life of Components. 4-6

Contents-2

5 Functional Information
Overview. 5-1 Power Supply System. 5-2 AC/DC Power Distribution. 5-2 Overcurrent Overvoltage Protection. 5-3 High-voltage Power Distribution. 5-4 Toner Cartridge Detection. 5-5 Engine Controller System. 5-6 Engine Controller Board Inputs and Outputs. 5-8 Laser and Scanner Drive. 5-12 Paper Motion Monitoring and Control. 5-12 Solenoids, Sensors, Clutches, and Switches. 5-12 Engine Test Print. 5-12 Motors. 5-13 Formatter System. 5-15 PowerSave. 5-15 Resolution Enhancement technology (REt). 5-16 EconoMode. 5-16 Input/Output. 5-17 CPU. 5-18 Printer Memory. 5-18 Random Access Memory (RAM). 5-19 DIMM Slots. 5-19 Page Protect. 5-20 PJL Overview. 5-20 PML. 5-21 Control Panel. 5-21 Image Formation System. 5-22 Toner Cartridge. 5-24 Photosensitive Drum. 5-25 Writing the Image. 5-28 Developing the Image. 5-29 Transferring the Image. 5-30 Image Fusing/Variable Fusing Temperature. 5-31 Paper Feed System. 5-33 Clutches and Sensors. 5-35 Printing from Tray 1. 5-36 Printing from Tray 2. 5-38 Printing from the Optional 500-sheet Universal Tray. 5-41 Envelope Feeder. 5-44 Duplexer. 5-46 Paper Jam. 5-48 Basic Sequence of Operation. 5-49

Contents-3

6 Removing and Replacing Parts
Overview. 6-1 Removal and Replacement Strategy. 6-2 Tools. 6-3 Removing Covers. 6-6 Rear Right Side Cover. 6-6 Top Cover. 6-7 Left Side Cover. 6-12 Front Right Side Cover. 6-13 Rear Cover/Rear Output Bin. 6-14 Tray 1. 6-15 Removing Assemblies. 6-18 Fuser. 6-18 Formatter Cage Assembly. 6-20 Output Assembly. 6-21 Laser Scanner. 6-23 Fan. 6-24 Main Motor. 6-25 Transfer Roller. 6-26 Tray 1 Pickup Roller. 6-27 Tray 1 Pickup Assembly. 6-29 Right Side Toner Cartridge Guide. 6-33 Registration Assembly. 6-34 Paper Feed Assembly. 6-36 Formatter Pan. 6-39 Gear Train. 6-40 Delivery Drive Assembly. 6-41 Separating the Engine Module from the Paper Feed Module. 6-42 Engine Controller Board. 6-44 Paper Feed Rollers. 6-48 Separation Rollers. 6-49 Paper Feed Module Plate. 6-50 Paper Feed Module Gear Train Assembly. 6-51 Paper Feed Module Side Rails. 6-52 Lower Paper Feed Module Plate (HP LaserJet 4000 T/4000 TN and 4050 T/4050 TN). 6-53 PCA Cover (HP LaserJet 4000 T/4000 TN and 4050 T/4050 TN). 6-54 PCA Cover (HP LaserJet 4000/4000 N and 4050/4050 N). 6-55 PCA Controller. 6-56

Contents-4

7 Troubleshooting
Overview. 7-1 Troubleshooting Process. 7-2 Troubleshooting Flowchart. 7-4 Troubleshooting Flowchart (Continued). 7-5 Troubleshooting the Printing System. 7-6 Preliminary Operating Checks. 7-6 Power On. 7-7 Engine Test. 7-11 Display. 7-12 Event Log. 7-13 Printer Messages. 7-17 General Paper Path Troubleshooting. 7-45 Information Pages. 7-48 Image Quality. 7-54 Image System Troubleshooting. 7-74 Interface Troubleshooting. 7-77 AUTOEXEC.BAT Standard Configurations. 7-81 Reference Diagrams. 7-84 Locations of Components. 7-84 Paper Path. 7-90 Engine Controller Board. 7-93 Paper Size Detection Switches. 7-94 Motors. 7-96 Connectors. 7-97 PCAs. 7-100 Sensors and Thermistor. 7-102 Solenoids and Clutch. 7-105 Switches. 7-108 Timing. 7-110

8 Parts and Diagrams

Overview. 8-1 How To Use the Parts Lists and Diagrams. 8-2 Accessories and Supplies. 8-4 Common Screws and Replacement Cables. 8-6 Illustrations and Parts Lists. 8-8 Alphabetical Parts List. 8-58 Numerical Parts List. 8-67

Contents-5