Where to Look for More Information.
Several references are available for use with this printer. For additional copies of the guides below, contact HP Parts Direct Ordering at 1-800-227-8164 (U.S.) or contact your HP-authorized dealer. Additional information is available at http://www.hp.com.

Setting Up the Printer

Getting Started Guide Step-by-step instructions for installing and setting up the printer.
HP JetDirect Print Server Software Installation Guide* Step-by-step instructions for configuring the HP JetDirect print server. Available for installation on your computer from the CD-ROM that came with the printer.
*Accompanies printers that include an HP JetDirect print server (network card).
Where to Look for More Information. 5

Using the Printer

Online User Guide Detailed information on using and troubleshooting the printer. Available for installation on your computer from the CD-ROM that came with the printer. If you would like a hard copy, print the User Guide using your printer. Quick Reference Guide Tips and quick information in a booklet to keep by the printer. See your network administrator for the copy that came with the printer.
Online Help Information on printer options that are available from within printer drivers. To view a Help file, access the online Help through the printer driver.
6 Where to Look for More Information.
Easy Product Registration
You can now register yourself as an HP LaserJet printer user on the HP Web Registration site at: http://www.hp.com/go/ColorLaserPrinter_register.
Easy Product Registration 7

Wheres the User Guide?

The user guide for this printer is supplied in online format for viewing on your computer screen. You can install the user guide while you are installing the printer software, or you can install it later. When you install the user guide, both the guide and Adobe Acrobat Reader are installed in the HP LaserJet folder.
To access the online user guide:
Windows 95 and Windows NT 4.0 On the Start menu, click Programs, click the HP LaserJet folder, and then click the HP CLJ4500 User Guide. Windows 3.1 and Windows NT 3.51 From Program Manager, double-click the HP LaserJet icon, and then double-click the HP CLJ4500 User Guide.

Screen view of the online user guide in Acrobat Reader For help on using the online user guide, click How to Use This Online User Guide ( [1] ). Or click Contents or Index in the bookmark column ( [2] ).

8 Wheres the User Guide?

Task 1
Prepare a Location for the Printer
Printer Location Top view of the printer Side view of the printer
The printer requires the following type of location:
a sturdy, level surface (do not tilt the printer more than 2) that is large enough to accommodate all four corners of the printer space around the printer, as shown above a well-ventilated room with no abrupt changes in temperature or humidity room temperature 15 to 28 C (59 to 83 F) relative humidity 10% to 70% no exposure to chemicals or direct sunlight line voltage and frequency not varying more than 10% from the value stated on the printer nameplate (located on the back of the printer)

q q q q

Task 1 9

Task 2

Unpack the Printer
4500, 4500 N, 4500 DN Printer

Quick Reference Guide

4500, 4500 N Printer

Getting Started Guide

English

Package Contents

The following items are included with the printer:
Printer Duplex Printing Accessory Tray 3 (500-sheet paper feeder) Printer Guides: getting started guide and quick reference guide Four Toner Cartridges: cyan (C), magenta (M), yellow (Y), and black (K) Software CD-ROMs: include printer drivers and software, network administrator utilities, the online user guide, and the HP JetDirect Print Server Software Installation Guide Power Cord Control Panel Overlay (for non-English language users) Imaging Drum

10 Task 2

To unpack the printer:
Note Save all of the packing materials in case you need to repack and transport the printer at a later date.
WARNING! This printer weighs approximately 57 kg (125 lb). The printer weighs 77 kg (169 lb) with Tray 3 and the duplex printing accessory installed. HP recommends using two or more people to move it. 1 Using safe lifting techniques, remove the 500-sheet paper feeder from the box. Place the 500-sheet paper feeder in the prepared location.
CAUTION The prepared location must be level (not more than a 2 angle), able to support up to 77 kg (169 lb.), and must support all four corners of the 500-sheet paper feeder.

Task 2 11

Using safe lifting techniques, remove the duplex printing accessory from the box.
Note For easier assembly during placement, line up the outside, beveled edges of the 500-sheet paper tray, the duplexer, and the printer. Use the guide pins on the 500-sheet paper feeder to align the duplex printing accessory.

CAUTION Avoid bending the guide pins while lowering the duplex printing accessory. Gently lower the duplex printing accessory onto the 500-sheet feeder.
CAUTION When removing the printer from the box, make sure you lift the printer using the hand holds located on each side of the printer. (See the illustration for step 6.) Lifting the printer from the front and rear could seriously damage the printer. 6 Using safe lifting techniques, remove the printer from the box.

12 Task 2

Use the guide pins on the duplex printing accessory to align the printer.
CAUTION Avoid bending the guide pins while lowering the printer. Gently lower the printer onto the duplex printing accessory. Remove the protective film from the printer control panel.
10 Remove all external packing tape from the printer, Tray 3, and the duplex printing accessory. 9 Note Make sure you remove the tape from the back of the printer. 11 Open the middle front drawer and remove the packing tape. Then close the drawer. 10

Task 2 13

Task 3

Install the Power Cord

3 Locate the power cord that shipped with the printer. Locate the standby button (power switch) on the front of the printer. The standby button has two positions: in (power on) and out (standby modethe fans remain on). Make sure that the standby button is out (standby mode). Insert the power cord into the power receptacle on the back side of the duplex printing accessory.

14 Task 3

Insert thes short duplexer power cord on the back of the duplexer into the power receptacle on the back side of the printer. Connect the power cord to a grounded power outlet.

Task 3 15

Task 4
Load Media into the Media Trays
Front View The printer has the following trays: 3 Note Tray 1 (multipurpose tray) with extending paper support Tray 2 (250-sheet tray) Tray 3 (500-sheet tray)
The printer control panel can be configured so that the printer draws certain media types from specific trays. This enables you, in the printer driver, to select media by type rather than by tray (source). Selecting media by type helps prevent accidental printing on special or expensive media. For example, if a tray is configured for letterhead, and you specify in the driver to print on plain paper, the printer will not accidentally print on letterhead from the letterhead tray. For more information on using the printer control panel to set the size and type of media for the input trays, see the online user guide. Do not use DeskJet (inkjet) transparencies in your printer. The transparencies can become overheated and melt, causing serious damage to your printer. Hewlett-Packard recommends using HP Color LaserJet Transparencies. HP products are designed to work together for optimum printing results.

20 Task 4

Load media into Tray 3. Load up to 500 sheets of 75 g/m2 (20-lb) stock. Capacity may vary with other media types.
CAUTION Place the media under the Fill tabs. Do not load paper above the Fill tabs. (Fill tabs are displayed and circled in illustration 5.) 6 Slide the media-width guides in until they hold the media firmly in place without bending the media. Turn the media-size knob on the side of Tray 3 to the size of the media in the tray. Insert Tray 3 into the printer.

Task 4 21

Task 5
Set Up the Printer Control Panel (Optional)
You might need to install the control panel overlay or replace the English overlay with one that displays your language. You also might need to configure the control panel to display messages in your language.
To change or install the control panel overlay:
Locate the control panel overlay that came in the printer box and remove it from the bag. If you are installing an overlay, rather than replacing one, skip to step 4. Otherwise continue to step 2. 3 Gently lift out on both sides of the overlay that is currently installed on the printer. Grasp the bottom of the overlay, pull it down, and then lift it out.

22 Task 5

To install the new overlay, position it over the control panel and install the top side first. Insert the top tabs on the overlay into the slots on the printer face. Then push the overlay up and push in the bottom. Snap the overlay firmly onto the control panel.

Task 5 23

To change the display language:
1 Press and hold the SELECT key on the printer control panel while you turn the printer on by pressing the standby button (power switch). Continue holding SELECT until the control panel displays SELECT LANGUAGE (in English), and then release SELECT. Wait until the control panel displays LANGUAGE=ENGLISH *. Then press the VALUE key repeatedly until your language choice appears. Press SELECT to save your language choice. An asterisk ( * ) appears next to the language when you select it.

24 Task 5

Press GO. After the printer warms up, the control panel displays:
TONER POSITION CYAN = MISSING
Note If the control panel does not display the message above in the language you selected, press the printer standby button (power switch) to turn the printer off and then repeat the instructions for changing the display language. Leave the printer turned on and continue to the next task.

Task 5 25

Task 6
Install the Toner Cartridges
1 Locate the toner cartridges packaged in the printer box. The printer uses four different toner colors and has a different toner cartridge for each color: cyan (C), magenta (M), yellow (Y), and black (K). If the printer is not already turned on, turn it on. Wait for the printer to warm up. When it is ready, the control panel displays:

Note If the Install Drum message appears, wait for the Install Toner Cartridge message, then proceed with the following instructions. 4 Push the dark gray release button on the side of the printer ( [1] ) and open the printers top cover ( [2] ). The cartridge slot for the cyan toner cartridge is visible. Lift up the flap that partially covers the cartridge slot. The correct toner color is shown on the flap.

26 Task 6

Remove the cyan toner cartridge from the bag. Gently rotate the toner cartridge from side to side to redistribute the toner. Locate the orange tab on the end of the toner cartridge.
CAUTION Do not shake the toner cartridge after you have removed the inside tape. Doing so could cause toner to spill. 8 Pull the tab firmly to remove the inside sealing tape. (If the tab breaks off, pull on the tape.) Discard the tape. Position the toner cartridge over the cartridge slot so that the blue arrow on the toner cartridge points to the blue arrow on the printer.
10 Be sure that the tab on the other end of the toner cartridge aligns with the notch on the cartridge slot. If the tab does not fit in the notch when you insert the toner cartridge, the toner is the wrong color for that cartridge slot.

Task 6 27

11 Hold the toner cartridge as shown. The arrow on the right (the control panel side of the printer) should point straight down. 12 Slide the toner cartridge down into the slot until the cartridge stops. 13 Rotate the toner cartridge toward the back of the printer (within the cartridge slot) until the cartridge stops. The cartridge shutter opens to reveal the developer sleeve. 14 Lower the flap to partially cover the toner cartridge. 15 Close the printers top cover. Note You must close the top cover before installing the next toner cartridge.

28 Task 6

16 On the printer control panel, press VALUE + once to prepare the printer for the next toner cartridge. When the printer is ready, the control panel displays:
TONER POSITION: (color) = MISSING
Install the other three toner cartridges by repeating steps 4 through 16. Install them in the following order: 1. magenta (M) 2. yellow (Y) 3. black (K) 18 After installing the fourth toner cartridge and closing the toner door, press GO. 18 CAUTION If you need to ship the printer in the future, remove the toner cartridges and imaging drum before shipping. Leave the printer turned on and continue to the next task.

Task 6 29

Task 7

Install the Imaging Drum

1 Locate the imaging drum package that came with the printer. Remove the imaging drum from the bag.
CAUTION Avoid exposing the imaging drum to direct light. Exposure to light for more than 15 seconds can seriously damage the imaging drum. 3 On the printer, pull open the front upper drawer until it stops. Align the imaging drum over the open drawer so that the arrow on top points to the rear of the printer, and the blue end cap on the side slides into the slot identified with the blue arrow. Slide the imaging drum down into place. Push the front upper drawer shut. Wait while the printer runs an internal color calibration. The calibration takes a few minutes. When the printer is ready, the control panel displays READY.

CAUTION If you need to ship the printer in the future, remove the toner cartridges and imaging drum before shipping.

30 Task 7

Task 8
Set PowerSave and Test Printer Operation
PowerSave reduces power consumption when the printer is not in use. The factory default setting for PowerSave is on, and the time setting is one hour. The instructions below explain how to change the time setting and how to turn PowerSave off.

To set PowerSave:

Press MENU on the control panel until CONFIGURATION MENU appears on the control panel display. Press ITEM until POWERSAVE=2 HR * appears. Press VALUE + or VALUE to display other time-setting choices between 1 minute and 8 hours, or off. Press SELECT to save your choice. An asterisk ( * ) appears beside your saved choice. Press GO. The control panel displays READY.

Task 8 31

To test printer operation:
Print a configuration page to ensure the printer is working properly. 1 Press MENU on the control panel until INFORMATION MENU appears on the control panel display. Press ITEM until PRINT CONFIGURATION appears. Press SELECT to print a configuration page. After about 30 seconds, the configuration page prints. If it does not print, see the Troubleshooting Checklist in this book.
Leave the printer turned on and continue to the next task.

32 Task 8

Task 9
Connect the Printer to the Network (Optional)
The HP Color LaserJet 4500 DN printer comes with the HP JetDirect J3113A print server, which supports RJ-45 (unshielded twisted pair) for 10Base-T or 100Base-TX networks.
To connect to a 10Base-T or 10/100Base-TX network:
Plug the connector of your unshielded twisted-pair cable into the RJ-45 port. The other end of the cable should be attached to the network.
RJ-45 (10Base-T or 10/100Base-TX) connection

Task 9 33

Task 10 Lock the Printer Control Panel (Optional)
You can prevent users from changing printer control panel settings by establishing a password and locking the printer control panel. The control panel offers multiple levels of security. You can lock certain control panel menus, allowing users to change the rest of the menus, or you can lock all of the menusand you can even lock the CANCEL JOB key. When the printer control panel is locked, unauthorized users who try to change settings at the control panel receive the following message:

ACCESS DENIED MENUS LOCKED

Levels of Security

Lock Setting
0 = None 1 = Minimum 2 = Moderate
Control Panel Items Locked
No items are locked. Configuration Menu I/O Menu Configuration Menu I/O Menu Calibration Menu Configuration Menu I/O Menu Calibration Menu Resets Menu Calibration Menu Resets Menu Resets Menu Paper Handling Menu Paper Handling Menu Information Menu Printing Menu CANCEL JOB key

3 = Maximum

Use HP JetAdmin software, HP LaserJet Utility for Macintosh, or an ASCII escape sequence to perform this procedure. HP software, which comes on the software CD-ROM, is easier to use than an ASCII escape sequence. For instructions on locking the control panel by using either HP JetAdmin software or the HP LaserJet Utility for Macintosh, access the online Help for that software.

34 Task 10

Using an ASCII PJL Escape Sequence to Set Network Security
If you decide to use the ASCII escape sequence, you must use an MS-DOS or Windows ASCII editor to create the commands. The commands must also be sent to the printer by using a DOS COPY command or an ASCII file downloader utility. Note In the following examples, EC represents the escape character. For more information on using escape characters, see the PJL Technical Reference Manual. For a copy of this manual, contact your HP-authorized dealer.
To lock or unlock the printer control panel if a password has not been set, send the following ASCII sequence to the printer: EC%-12345X@PJL JOB @PJL DEFAULT CPLOCK=NONE (or MINIMUM, MODERATE, or MAXIMUM) @PJL EOJ EC%-12345X
To set the password, send the following ASCII sequence to the printer: EC%-12345X@PJL JOB @PJL DEFAULT PASSWORD=[numeric password (0 to 65535)] @PJL EOJ EC%-12345X
To lock or unlock the control panel if the password has been set, send the following ASCII sequence to the printer: EC%-12345X@PJL JOB PASSWORD=(numeric password) @PJL DEFAULT CPLOCK=NONE (or MINIMUM, MODERATE, or MAXIMUM) @PJL EOJ EC%-12345X

Task 10 35

Task 11 Connect a Parallel Cable (Optional)
1 The printer can connect to the computer with a bidirectional parallel cable (IEEE1284 compliant) with a C-size connector to the printer and a B-size connector to the computer. HP recommends the parallel cable length to be no longer than 10 meters (30 ft) in length. The cable (HP part number C2946A) is included with the HP Color LaserJet 4500 printer. It must be purchased separately for the HP Color LaserJet 4500 N and 4500 DN printer.
To connect a parallel cable:
1 Press the printer standby button (power switch) to turn the printer to standby mode, and turn off the computer to which you are connecting the parallel cable. Plug the parallel cable into the printers parallel port until it snaps into place. Plug the other end of the parallel cable into the computer. Tighten down the screws on the parallel cable to secure the cable to the computer.

36 Task 11

Turn the computer on and then turn the printer on.
Note Your system will sense the printer if it is Plug and Play compatible. Follow the directions on your screen. To install the complete software package, cancel Plug and Play and continue to the next task. Continue to the next page for instructions on verifying communication between the computer and the printer.

Task 11 37

To verify communication when using a parallel cable:
1 At the computer, at the DOS prompt (root directory), type DIR>LPT1 and press ENTER.
If you are using a UNIX operating system, use the equivalent commands. At the printer, if the Data light on the control panel stays on for more than a minute, press GO. Otherwise, continue to step 3. If a directory list prints, printer setup is complete. Now you can install the software to work with the new HP Color LaserJet 4500 printer. OR If an error message appears in the printer control panel display, see the troubleshooting section in the printers online user guide for information. OR If the printer neither prints the directory list nor displays an error message on the control panel, check to see that all the power cables are plugged in and that all the cables connecting the printer to the computer are securely fastened. Remove any print sharing device or port security device which may be connected between the computer and printer.

38 Task 11

Task 12 Prepare to Use Software
Before you or other users can print to the printer, the software (printer drivers and optional printing utilities) must be installed on any computer printing to the printer. The software is on the CD-ROM that is included in the box with the printer. This section provides overviews of the CD-ROM software and the installation procedures for the following types of printer users:
single user whose IBM-compatible computer is directly connected to the printer by a parallel cable single user whose Macintosh-compatible computer is directly connected to the printer by a LocalTalk or Ethernet cable (for EtherTalk) network administrator who is installing the printer on a network for network clients

CD-ROM Software Overview

The CD-ROM includes software designed for end users who are operating in the following environments:

q q q q q q

Windows 3.1x Windows 9x Windows NT 3.51 Windows NT 4.0 IBM OS/2 Macintosh System 7 or later (appears only in a Macintosh environment)
The CD-ROM also includes software for network administrators who are using the following network operating systems.

q q q q q

Novell NetWare 3.x or 4.x (Windows 3.1x or Windows 95) Windows 9x Windows NT 3.51 Windows NT 4.0 AppleTalk (EtherTalk and LocalTalk)

Task 12 39

Software Installation Overview for IBM-Compatible Single Users
Read this overview if you are a single user whose IBM-compatible computer is the only one connected to the printer and the computer is connected to the printer by a parallel cable (IEEE-1284 compliant) with a C-size connector.
Install the software and the online user guide (optional) on the computer that is connected to the printer. For instructions, see Task 13, Install the Software. Once the software is installed, installation is completeunless you need to select a different printer port for the printer driver. If you need to select a different port for the printer, see Task 17, Connect to the Printer. Once you have selected the correct port for the driver, installation is complete. On all computers that print to the printer, configure the printer driver to show that the 500-sheet paper feeder and duplex printing accessory are installed. (For instructions, see the online Help for the printer driver.)

40 Task 12

Software Installation Overview for Macintosh Single Users
Read this overview if you are a single user whose Macintosh computer is the only one connected to the printer and the computer is connected to the printer by a LocalTalk or EtherTalk cable.
Set up the AppleTalk (or Network) Chooser for either an EtherTalk connection or a LocalTalk (Printer Port) connection. Install the software and the online user guide (optional) on the computer that is connected to the printer. For instructions, see the Macintosh section in Task 13, Install the Software. In the Chooser, configure a printer driver for the new printer PPD. For instructions, see the HP LaserJet Printing Guide for Macintosh, v. 2.5, an online Help file located in the HP LaserJet folder that is installed on the hard disk.
On all computers that print to the printer, configure the printer driver to show that the 500-sheet paper feeder and duplex printing accessory are installed. (For instructions, see the online Help for the printer driver.)

Task 12 41

Software Installation Overview for Network Administrators
Read this overview if you are a network administrator who is installing the printer on a network for network clients.

Depending on the network environment, install the software and the online user guide (optional) on either your network administrators workstation or on the network server. For instructions, see Task 13, Install the Software. If the printer was not configured for the network when it was set up, use HP JetAdmin software to remotely configure the printer on the network. In an AppleTalk environment, you have the option of assigning a name and a network zone to the printer. For instructions, see Task 14, Configure the Printer on the Network.

42 Task 12

Distribute the installation software to each network client. You can pass around the CD-ROM, or you can place disk images of the installation software onto a network directory or onto diskettes. For instructions, see Task 15, Distribute the Software to Network Clients. Install the software onto client workstations. For instructions, see Task 16, Install the Software for Network Clients. Users connect their workstations to the printer by either selecting the new port to which the printer is connected (Windows) or by configuring a driver with the new PPD in the Chooser (Macintosh). For instructions, see Task 17, Connect to the Printer.

Task 12 43

Task 13 Install the Software
These installation instructions are for single users and network administrators. Procedures for installing the software vary according to your operating system and network environment. Use the instructions below that best match your operating system and network environment.

Windows

The setup software detects both the version of Windows that you are running and the language that is selected in your operating system. The setup software then installs printer drivers and software that are appropriate for your system.
For Single users install the software on the computer that is connected to the printer. For Novell NetWare networks, install the software on the network administrators workstation. In a shared Windows network environment, install the software twiceonce to install shared files onto the Windows directory on the network, and once to install the printing system onto each workstation. For Windows NT networks with a client server, install the software on the server.
Single User: Log onto the computer that is connected to the printer. Network Administrator: Depending on your environment, log onto the network administrators workstation or onto the server with Supervisor or Admin privileges.

For installation instructions, see the installation Readme.hp file in the OS/2 folder on the software CD-ROM.
The Macintosh partition contains an installer program for each language. Find the language that is appropriate for your operating system and then use the installer program for that language.

Task 16 53

Task 17 Connect to the Printer
These installation instructions are for single users and network administrators. After installing the end-user software on a client workstation, connect the printer drivers to the proper printer port. This enables the client to print to the printer. The procedures for connecting to a port vary, depending on your operating system. Use the instructions below that apply to your operating system.
Windows 3.1 and Windows 9x
In Windows 3.1, open the Printers icon in the Control Panel, and then use the Connect button to connect the printer driver to the correct port. If the port is not visible in the Ports list, click the Network button and complete the Connect To Network dialog box. In Windows 95, select the printer in the Printers folder, and then open Properties from the File menu. Select the correct port from the Details tab. If the port is not present, click the Add Port button and complete the Add Port dialog box.
Windows NT 3.51 and Windows NT 4.0
Note To connect to the network printer on a Windows NT workstation, you must have ADMINISTRATOR PRIVILEGES on that workstation. When you connect to the network printer on a Windows NT workstation, the printer driver gets installed from the server. If the operating system is unable to install the driver from the server, you can install the driver from the CD-ROM. If you are prompted for the driver, browse for printer.inf (Windows NT 3.51) or ntprint.inf (Windows NT 4.0) in the following subdirectory: D:\image\<OS>\<language>\<driver>\disk1 (where <OS> is your operating system, <language> is the language you are using, and <driver> is the driver you are using such as PCL or PS).

54 Task 17

In Windows NT 3.51, use Connect to Printer in the Printer menu. Under Shared Printers, double-click on the printers network name and then follow the instructions on the screen. In Windows NT 4.0, use the Add Printer Wizard in the Printers folder to connect to a network printer.
For instructions on configuring the printer in the Chooser, see the HP LaserJet Printing Guide for Macintosh, v. 2.5, in the HP LaserJet folder that is installed on the system hard disk.

Task 17 55

Troubleshooting Checklist

Problem or Error Message

The control panel display is blank.

Solution

Make sure the printers power switch is on. The printer may be in PowerSave mode. Press GO to check. Make sure all power cables are securely attached and plugged into a grounded power outlet. Verify that the short cable on the back of the duplexer is connected to the printer and that the power cord is connected correctly between the duplexer and the outlet.
The control panel displays OFFLINE. Cannot print from the computer using a parallel cable.
Press GO. The cable might be bad or installed incorrectly, or might be too long. Remove the cable and reconnect it, making sure it is securely connected. Try another bidirectional parallel cable (IEEE-1284 compliant) with a C-size connector under 10 m (30 ft) in length. Replace the cable with an HP C2946A cable or equivalent. The wrong port may be selected or rerouted. Check the MODE statement in the AUTOEXEC.BAT file. There may be a bad port on the computer or printer. Try using a different port, or, if possible, a different computer or printer to help isolate the problem.
Cannot print using a sharing device.
Try to isolate the cause of the problem. Test the printer using a cable connected directly from the computer to the printer. Contact the sharing device vendor for troubleshooting steps. The interface cable may be bad or loose. Check the cable and connection. If you are using a bidirectional parallel cable (IEEE 1284 compliant) with a C connector, make sure it is not longer than 10 m (30 ft). Paper may be jammed in one of several locations. Clear all jams according to instructions in the quick reference guide. Make sure packing spacers are removed from the tray.
Random garbage characters are printing.
Control panel displays 13.X PAPER JAM.
Control panel displays an error message. Turn the printer off and back on. If the message does not clear, see the online user guide. Cannot find the printer in the network OR The HP JetDirect configuration page indicates an I/O CARD NOT READY message. Ensure your configuration parameters are correct. See the troubleshooting section in the HP JetDirect Print Server Software Installation Guide. Verify cabling connections.

DIMM configuration
You can add additional Random Access Memory (RAM) to this printer by installing Dual Inline Memory Modules (DIMMs). The HP Color LaserJet 4500 printer uses 100-pin, non-parity, synchronous DRAM memory modules. The HP Color LaserJet 4550 printer uses 168-pin synchronous DRAM memory modules. The SDRAM modules do not need to be configured in pairs (in corresponding left and right slots). Note Extended Data Output (EDO) DIMMs are not supported.

Adding memory

HP Color LaserJet 4500 printer
You can install 4, 8, 16, 32, or 64 MB DIMMs into the printers three DIMM slots. The DIMM slots can be used to add memory, fonts, or firmware upgrades.
HP Color LaserJet 4550 printer
You can install 64 or 128 MB DIMMs into the printers two DIMM slots. The DIMM slots may be used to add memory only. You can add fonts or firmware upgrades to the printers two 100-pin slots. Note The HP Color LaserJet 4500 printer will recognize RAM only up to 208 MB. The HP Color LaserJet 4550 printer will recognize RAM only up to 192 MB. Additional memory will not be used by either printer. To install memory in the printer, you must remove the formatter board from the rear of the printer. To remove the formatter board, remove the six screws shown in Figure 4-4. The DIMMs are then inserted into the available slots in the formatter board. See Appendix A in the online user guide for installation instructions.

Figure 4-4

Removing the formatter board

CAUTION

Do not attempt to remove the DIMM in slot #4 (see Figure 4-5) of the HP Color LaserJet 4500 printer, or the DIMM in slot #3 (see Figure 4-6) of the HP Color LaserJet 4550 printer. This DIMM is part of the printers firmware. Removing it will affect printer operation.

98 Printer maintenance

C7085-90921

Figure 4-5

Do not remove the DIMM in slot #4.

Figure 4-6

Do not remove the DIMM in slot #3.
The HP Color LaserJet 4500 printer uses 100-pin, non-parity, synchronous SDRAM DIMMs. The HP Color LaserJet 4550 printer uses 168-pin, non-parity, synchronous DRAM DIMMs; EDO DIMMs are not supported in either the HP Color LaserJet 4500 printer or the 4550 printer. To ensure you are using the correct DIMM, see figure 4-7.

Figure 4-7

EDO and SDRAM memory modules
Chapter 4 Printer maintenance 99