© Copyright 2000, Hewlett-Packard Company Warranty Trademark Credits All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws. The information contained in this document is subject to change without notice. Adobe is a trademark of Adobe Systems Incorporated which may be registered in certain jurisdictions. 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. Part number: C7085-90921 Arial is a U.S. registered trademark of the Monotype Corporation.

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Conventions This is a combined Service Manual for both the HP Color LaserJet 4500 series printer and the HP Color LaserJet 4550 series printer. The HP Color LaserJet 4550 series printer shares most characteristics of the HP Color LaserJet 4500 series printer, except where stated. This manual uses the following conventions: C OL o R is used to emphasize items that are important to the material under discussion. Bold is used for emphasis, particularly in situations where italic type would be confusing. Italic type is used to indicate related documents or emphasis. Commands you use on a computer keyboard or on the printer control panel are shown in [Keycap] .

Two examples are [Select] , and [-[Value +] . DISPLAY type indicates text as seen on the printer control panel display. COURIER type indicates text that you type on a computer keyboard exactly as shown. Hint Hints are used to suggest an action that might simplify the process. WWW World Wide Web references give Internet addresses for additional information and information updates. Note Notes contain important information set off from the text. CAUTION Caution messages alert you to the possibility of damage to equipment or loss of data. WARNING! Warning messages alert you to the possibility of personal injury. iii

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